research branch, WIP

* feat: viewable area

* chore: add test

* fix: get image ref when real-time

Co-authored-by: Jesse Mazzella <ozyx@users.noreply.github.com>

.github/PULL_REQUEST_TEMPLATE.md

@@ -21,9 +21,9 @@ Closes <!--- Insert Issue Number(s) this PR addresses. Start by typing # will op
 ### Reviewer Checklist
 
 * [ ] Changes appear to address issue?
+* [ ] Reviewer has tested changes by following the provided instructions?
 * [ ] Changes appear not to be breaking changes?
-* [ ] Appropriate unit tests included?
+* [ ] Appropriate automated tests included?
 * [ ] Code style and in-line documentation are appropriate?
-* [ ] Commit messages meet standards?
 * [ ] Has associated issue been labelled unverified? (only applicable if this PR closes the issue)
 * [ ] Has associated issue been labelled bug? (only applicable if this PR is for a bug fix)

.github/codeql/codeql-config.yml

@@ -0,0 +1 @@
+name: 'Custom CodeQL config'

.github/dependabot.yml

@@ -13,14 +13,18 @@ updates:
       - "pr:daveit"
       - "pr:platform"
     ignore:
-        #We have to source the container which is not detected by Dependabot
+      #We have to source the playwright container which is not detected by Dependabot
       - dependency-name: "@playwright/test"
-        #Lots of noise in these type patch releases.
+      - dependency-name: "playwright-core"
+      #Lots of noise in these type patch releases.
       - dependency-name: "@babel/eslint-parser"
-        update-types: ["version-update:semver-patch"]
+        update-types: ["version-update:semver-patch"] 
       - dependency-name: "eslint-plugin-vue"
         update-types: ["version-update:semver-patch"]
-
+      - dependency-name: "babel-loader"
+        update-types: ["version-update:semver-patch"]
+      - dependency-name: "sinon"
+        update-types: ["version-update:semver-patch"]
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:

.github/workflows/codeql-analysis.yml

@@ -1,11 +1,10 @@
-
-name: "CodeQL"
+name: 'CodeQL'
 
 on:
   push:
-    branches: [ master ]
+    branches: [master, 'release/*']
   pull_request:
-    branches: [ master ]
+    branches: [master, 'release/*']
     paths-ignore:
       - '**/*Spec.js'
       - '**/*.md'
@@ -27,17 +26,19 @@ jobs:
       security-events: write
 
     steps:
-    - name: Checkout repository
-      uses: actions/checkout@v3
+      - name: Checkout repository
+        uses: actions/checkout@v3
 
-    # Initializes the CodeQL tools for scanning.
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
-      with:
-        languages: javascript
+      # Initializes the CodeQL tools for scanning.
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v2
+        with:
+          config-file: ./.github/codeql/codeql-config.yml
+          languages: javascript
+          queries: security-and-quality
 
-    - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v2
 
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v2

.github/workflows/lighthouse.yml

@@ -1,98 +0,0 @@
-name: lighthouse
-on:
-  workflow_dispatch:
-    inputs: 
-      version:
-        description: 'Which branch do you want to test?' # Limited to branch for now
-        required: false
-        default: 'master'
-  pull_request:
-    types: 
-      - labeled
-jobs:
-  lighthouse-pr:
-    if: ${{ github.event.label.name == 'pr:lighthouse' }}
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout Master for Baseline
-        uses: actions/checkout@v3
-        with:
-          ref: master #explicitly checkout master for baseline
-      - name: Install Node 16
-        uses: actions/setup-node@v3
-        with:
-          node-version: '16'
-      - name: Cache node modules
-        uses: actions/cache@v2
-        env:
-          cache-name: cache-node-modules
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package.json') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package.json') }}
-      - name: npm install with lighthouse cli 
-        run: npm install && npm install -g @lhci/cli
-      - name: Run lhci against master to generate baseline and ignore exit codes
-        run: lhci autorun || true
-      - name: Perform clean checkout of PR
-        uses: actions/checkout@v3
-        with:
-          clean: true
-      - name: Install Node version which is compatible with PR
-        uses: actions/setup-node@v3
-      - name: npm install with lighthouse cli 
-        run: npm install && npm install -g @lhci/cli
-      - name: Run lhci with PR
-        run: lhci autorun
-        env:
-          LHCI_GITHUB_APP_TOKEN: ${{ secrets.LHCI_GITHUB_APP_TOKEN }}
-  lighthouse-nightly:
-    if: ${{ github.event.schedule }}
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - name: Install Node 16
-        uses: actions/setup-node@v3
-        with:
-          node-version: '16'
-      - name: Cache node modules
-        uses: actions/cache@v2
-        env:
-          cache-name: cache-node-modules
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package.json') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package.json') }}
-      - name: npm install with lighthouse cli 
-        run: npm install && npm install -g @lhci/cli
-      - name: Run lhci against master to generate baseline
-        run: lhci autorun
-        env:
-          LHCI_GITHUB_APP_TOKEN: ${{ secrets.LHCI_GITHUB_APP_TOKEN }}
-  lighthouse-dispatch:
-    if: ${{ github.event.workflow_dispatch }}
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          ref: ${{ github.event.inputs.version }}
-      - name: Install Node 14
-        uses: actions/setup-node@v3
-        with:
-          node-version: '16'
-      - name: Cache node modules
-        uses: actions/cache@v3
-        env:
-          cache-name: cache-node-modules
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package.json') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package.json') }}
-      - name: npm install with lighthouse cli 
-        run: npm install && npm install -g @lhci/cli
-      - name: Run lhci against master to generate baseline
-        run: lhci autorun
-        

.github/workflows/npm-prerelease.yml

@@ -16,7 +16,11 @@ jobs:
         with:
           node-version: 16
       - run: npm install
-      - run: npm test
+      - run: |
+          echo "//registry.npmjs.org/:_authToken=$NODE_AUTH_TOKEN" >> ~/.npmrc
+          npm whoami
+          npm publish --access=public --tag unstable openmct
+      # - run: npm test
 
   publish-npm-prerelease:
     needs: build
@@ -28,6 +32,6 @@ jobs:
           node-version: 16
           registry-url: https://registry.npmjs.org/
       - run: npm install
-      - run: npm publish --access public --tag unstable
+      - run: npm publish --access=public --tag unstable
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

.npmignore

@@ -10,9 +10,6 @@
 # https://github.com/nasa/openmct/issues/4992
 !/example/**/*
 
-# We will remove this in https://github.com/nasa/openmct/issues/4922
-!/app.js
-
 # ...except for these files in the above folders.
 /src/**/*Spec.js
 /src/**/test/
@@ -24,4 +21,10 @@
 !copyright-notice.html
 !index.html
 !openmct.js
-!SECURITY.md
+!SECURITY.md
+
+# Add e2e tests to npm package
+!/e2e/**/*
+
+# ... except our test-data folder files.
+/e2e/test-data/*.json

Procfile

@@ -1 +0,0 @@
-web: node app.js --port $PORT

README.md

@@ -30,6 +30,8 @@ Building and running Open MCT in your local dev environment is very easy. Be sur
 
 Open MCT is now running, and can be accessed by pointing a web browser at [http://localhost:8080/](http://localhost:8080/)
 
+Open MCT is built using [`npm`](http://npmjs.com/) and [`webpack`](https://webpack.js.org/).
+
 ## Documentation
 
 Documentation is available on the [Open MCT website](https://nasa.github.io/openmct/documentation/).
@@ -43,11 +45,9 @@ our documentation.
 We want Open MCT to be as easy to use, install, run, and develop for as
 possible, and your feedback will help us get there! Feedback can be provided via [GitHub issues](https://github.com/nasa/openmct/issues/new/choose), [Starting a GitHub Discussion](https://github.com/nasa/openmct/discussions), or by emailing us at [arc-dl-openmct@mail.nasa.gov](mailto:arc-dl-openmct@mail.nasa.gov).
 
-## Building Applications With Open MCT
+## Developing Applications With Open MCT
 
-Open MCT is built using [`npm`](http://npmjs.com/) and [`webpack`](https://webpack.js.org/).
-
-See our documentation for a guide on [building Applications with Open MCT](https://github.com/nasa/openmct/blob/master/API.md#starting-an-open-mct-application).
+For more on developing with Open MCT, see our documentation for a guide on [Developing Applications with Open MCT](./API.md#starting-an-open-mct-application).
 
 ## Compatibility
 
@@ -64,7 +64,7 @@ that is intended to be added or removed as a single unit.
 As well as providing an extension mechanism, most of the core Open MCT codebase is also 
 written as plugins.
 
-For information on writing plugins, please see [our API documentation](https://github.com/nasa/openmct/blob/master/API.md#plugins).
+For information on writing plugins, please see [our API documentation](./API.md#plugins).
 
 ## Tests
 
@@ -100,7 +100,7 @@ To run the performance tests:
 The test suite is configured to all tests localed in `e2e/tests/` ending in `*.e2e.spec.js`. For more about the e2e test suite, please see the [README](./e2e/README.md)
 
 ### Security Tests
-Each commit is analyzed for known security vulnerabilities using [CodeQL](https://codeql.github.com/docs/codeql-language-guides/codeql-library-for-javascript/) and our overall security report is available on [LGTM](https://lgtm.com/projects/g/nasa/openmct/)
+Each commit is analyzed for known security vulnerabilities using [CodeQL](https://codeql.github.com/docs/codeql-language-guides/codeql-library-for-javascript/) and our overall security report is available on [LGTM](https://lgtm.com/projects/g/nasa/openmct/). The list of CWE coverage items is avaiable in the [CodeQL docs](https://codeql.github.com/codeql-query-help/javascript-cwe/). The CodeQL workflow is specified in the [CodeQL analysis file](./.github/workflows/codeql-analysis.yml) and the custom [CodeQL config](./.github/codeql/codeql-config.yml).
 
 ### Test Reporting and Code Coverage
 

app.js

@@ -1,92 +0,0 @@
-/*global process*/
-
-/**
- * Usage:
- *
- * npm install minimist express
- * node app.js [options]
- */
-
-const options = require('minimist')(process.argv.slice(2));
-const express = require('express');
-const app = express();
-const fs = require('fs');
-const request = require('request');
-const __DEV__ = !process.env.NODE_ENV || process.env.NODE_ENV === 'development';
-
-// Defaults
-options.port = options.port || options.p || 8080;
-options.host = options.host || 'localhost';
-options.directory = options.directory || options.D || '.';
-
-// Show command line options
-if (options.help || options.h) {
-    console.log("\nUsage: node app.js [options]\n");
-    console.log("Options:");
-    console.log("  --help, -h               Show this message.");
-    console.log("  --port, -p <number>      Specify port.");
-    console.log("  --directory, -D <bundle>   Serve files from specified directory.");
-    console.log("");
-    process.exit(0);
-}
-
-app.disable('x-powered-by');
-
-app.use('/proxyUrl', function proxyRequest(req, res, next) {
-    console.log('Proxying request to: ', req.query.url);
-    req.pipe(request({
-        url: req.query.url,
-        strictSSL: false
-    }).on('error', next)).pipe(res);
-});
-
-class WatchRunPlugin {
-    apply(compiler) {
-        compiler.hooks.emit.tapAsync('WatchRunPlugin', (compilation, callback) => {
-            console.log('Begin compile at ' + new Date());
-            callback();
-        });
-    }
-}
-
-const webpack = require('webpack');
-let webpackConfig;
-if (__DEV__) {
-    webpackConfig = require('./webpack.dev');
-    webpackConfig.plugins.push(new webpack.HotModuleReplacementPlugin());
-    webpackConfig.entry.openmct = [
-        'webpack-hot-middleware/client?reload=true',
-        webpackConfig.entry.openmct
-    ];
-    webpackConfig.plugins.push(new WatchRunPlugin());
-} else {
-    webpackConfig = require('./webpack.coverage');
-}
-
-const compiler = webpack(webpackConfig);
-
-app.use(require('webpack-dev-middleware')(
-    compiler,
-    {
-        publicPath: '/dist',
-        stats: 'errors-warnings'
-    }
-));
-
-if (__DEV__) {
-    app.use(require('webpack-hot-middleware')(
-        compiler,
-        {}
-    ));
-}
-
-// Expose index.html for development users.
-app.get('/', function (req, res) {
-    fs.createReadStream('index.html').pipe(res);
-});
-
-// Finally, open the HTTP server and log the instance to the console
-app.listen(options.port, options.host, function () {
-    console.log('Open MCT application running at %s:%s', options.host, options.port);
-});
-

docs/footer.html

@@ -1,3 +0,0 @@
-        <hr>
-    </body>
-</html>

docs/gendocs.js

@@ -1,209 +0,0 @@
-/*****************************************************************************
- * Open MCT, Copyright (c) 2014-2022, United States Government
- * as represented by the Administrator of the National Aeronautics and Space
- * Administration. All rights reserved.
- *
- * Open MCT is licensed under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * http://www.apache.org/licenses/LICENSE-2.0.
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations
- * under the License.
- *
- * Open MCT includes source code licensed under additional open source
- * licenses. See the Open Source Licenses file (LICENSES.md) included with
- * this source code distribution or the Licensing information page available
- * at runtime from the About dialog for additional information.
- *****************************************************************************/
-
-/*global require,process,__dirname,GLOBAL*/
-/*jslint nomen: false */
-
-
-// Usage:
-//   node gendocs.js --in <source directory> --out <dest directory>
-
-var CONSTANTS = {
-        DIAGRAM_WIDTH: 800,
-        DIAGRAM_HEIGHT: 500
-    },
-    TOC_HEAD = "# Table of Contents";
-
-GLOBAL.window = GLOBAL.window ||  GLOBAL; // nomnoml expects window to be defined
-(function () {
-    "use strict";
-
-    var fs = require("fs"),
-        mkdirp = require("mkdirp"),
-        path = require("path"),
-        glob = require("glob"),
-        marked = require("marked"),
-        split = require("split"),
-        stream = require("stream"),
-        nomnoml = require('nomnoml'),
-        toc = require("markdown-toc"),
-        Canvas = require('canvas'),
-        header = fs.readFileSync(path.resolve(__dirname, 'header.html')),
-        footer = fs.readFileSync(path.resolve(__dirname, 'footer.html')),
-        options = require("minimist")(process.argv.slice(2));
-
-    // Convert from nomnoml source to a target PNG file.
-    function renderNomnoml(source, target) {
-        var canvas =
-            new Canvas(CONSTANTS.DIAGRAM_WIDTH, CONSTANTS.DIAGRAM_HEIGHT);
-        nomnoml.draw(canvas, source, 1.0);
-        canvas.pngStream().pipe(fs.createWriteStream(target));
-    }
-
-    // Stream transform.
-    // Pulls out nomnoml diagrams from fenced code blocks and renders them
-    // as PNG files in the output directory, prefixed with a provided name.
-    // The fenced code blocks will be replaced with Markdown in the
-    // output of this stream.
-    function nomnomlifier(outputDirectory, prefix) {
-        var transform = new stream.Transform({ objectMode: true }),
-            isBuilding = false,
-            counter = 1,
-            outputPath,
-            source = "";
-
-        transform._transform = function (chunk, encoding, done) {
-            if (!isBuilding) {
-                if (chunk.trim().indexOf("```nomnoml") === 0) {
-                    var outputFilename = prefix + '-' + counter + '.png';
-                    outputPath = path.join(outputDirectory, outputFilename);
-                    this.push([
-                        "\n![Diagram ",
-                        counter,
-                        "](",
-                        outputFilename,
-                        ")\n\n"
-                    ].join(""));
-                    isBuilding = true;
-                    source = "";
-                    counter += 1;
-                } else {
-                    // Otherwise, pass through
-                    this.push(chunk + '\n');
-                }
-            } else {
-                if (chunk.trim() === "```") {
-                    // End nomnoml
-                    renderNomnoml(source, outputPath);
-                    isBuilding = false;
-                } else {
-                    source += chunk + '\n';
-                }
-            }
-            done();
-        };
-
-        return transform;
-    }
-
-    // Convert from Github-flavored Markdown to HTML
-    function gfmifier(renderTOC) {
-        var transform = new stream.Transform({ objectMode: true }),
-            markdown = "";
-        transform._transform = function (chunk, encoding, done) {
-            markdown += chunk;
-            done();
-        };
-        transform._flush = function (done) {
-            if (renderTOC){
-                // Prepend table of contents
-                markdown =
-                    [ TOC_HEAD, toc(markdown).content, "", markdown ].join("\n");
-            }
-            this.push(header);
-            this.push(marked(markdown));
-            this.push(footer);
-            done();
-        };
-        return transform;
-    }
-
-    // Custom renderer for marked; converts relative links from md to html,
-    // and makes headings linkable.
-    function CustomRenderer() {
-        var renderer = new marked.Renderer(),
-            customRenderer = Object.create(renderer);
-        customRenderer.heading = function (text, level) {
-            var escapedText = (text || "").trim().toLowerCase().replace(/\W/g, "-"),
-                aOpen = "<a name=\"" + escapedText + "\" href=\"#" + escapedText + "\">",
-                aClose = "</a>";
-            return aOpen + renderer.heading.apply(renderer, arguments) + aClose;
-        };
-        // Change links to .md files to .html
-        customRenderer.link = function (href, title, text) {
-            // ...but only if they look like relative paths
-            return (href || "").indexOf(":") === -1 && href[0] !== "/" ?
-                    renderer.link(href.replace(/\.md/, ".html"), title, text) :
-                    renderer.link.apply(renderer, arguments);
-        };
-        return customRenderer;
-    }
-
-    options['in'] = options['in'] || options.i;
-    options.out = options.out || options.o;
-
-    marked.setOptions({
-        renderer: new CustomRenderer(),
-        gfm: true,
-        tables: true,
-        breaks: false,
-        pedantic: false,
-        sanitize: true,
-        smartLists: true,
-        smartypants: false
-    });
-
-    // Convert all markdown files.
-    // First, pull out nomnoml diagrams.
-    // Then, convert remaining Markdown to HTML.
-    glob(options['in'] + "/**/*.md", {}, function (err, files) {
-        files.forEach(function (file) {
-            var destination = file.replace(options['in'], options.out)
-                .replace(/md$/, "html"),
-                destPath = path.dirname(destination),
-                prefix = path.basename(destination).replace(/\.html$/, ""),
-                //Determine whether TOC should be rendered for this file based
-                //on regex provided as command line option
-                renderTOC = file.match(options['suppress-toc'] || "") === null;
-
-            mkdirp(destPath, function (err) {
-                fs.createReadStream(file, { encoding: 'utf8' })
-                    .pipe(split())
-                    .pipe(nomnomlifier(destPath, prefix))
-                    .pipe(gfmifier(renderTOC))
-                    .pipe(fs.createWriteStream(destination, {
-                        encoding: 'utf8'
-                    }));
-            });
-        });
-    });
-
-    // Also copy over all HTML, CSS, or PNG files
-    glob(options['in'] + "/**/*.@(html|css|png)", {}, function (err, files) {
-        files.forEach(function (file) {
-            var destination = file.replace(options['in'], options.out),
-                destPath = path.dirname(destination),
-                streamOptions = {};
-            if (file.match(/png$/)) {
-                streamOptions.encoding = null;
-            } else {
-                streamOptions.encoding = 'utf8';
-            }
-
-            mkdirp(destPath, function (err) {
-                fs.createReadStream(file, streamOptions)
-                    .pipe(fs.createWriteStream(destination, streamOptions));
-            });
-        });
-    });
-
-}());

docs/header.html

@@ -1,9 +0,0 @@
-<html>
-    <head>
-        <link rel="stylesheet"
-              href="//nasa.github.io/openmct/static/res/css/styles.css">
-        <link rel="stylesheet"
-              href="//nasa.github.io/openmct/static/res/css/documentation.css">
-    </head>
-    <body>
-

docs/src/index.md

@@ -15,8 +15,8 @@
 
 ## Sections
  
- * The [API](api/) document is generated from inline documentation 
- using [JSDoc](http://usejsdoc.org/), and describes the JavaScript objects and
+ * The [API](api/) uses inline documentation 
+ using [TypeScript](https://www.typescriptlang.org) and some legacy [JSDoc](https://jsdoc.app/). It describes the JavaScript objects and
  functions that make up the software platform.
 
  * The [Development Process](process/) document describes the

e2e/README.md

@@ -151,7 +151,7 @@ Current list of test tags:
 
 - `@ipad` - Test case or test suite is compatible with Playwright's iPad support and Open MCT's read-only mobile view (i.e. no Create button).
 - `@gds` - Denotes a GDS Test Case used in the VIPER Mission.
-- `@addInit` - Initializes the browser with an injected and artificial state. Useful for loading non-default plugins. Likely will not work outside of app.js.
+- `@addInit` - Initializes the browser with an injected and artificial state. Useful for loading non-default plugins. Likely will not work outside of `npm start`.
 - `@localStorage` - Captures or generates session storage to manipulate browser state. Useful for excluding in tests which require a persistent backend (i.e. CouchDB).
 - `@snapshot` - Uses Playwright's snapshot functionality to record a copy of the DOM for direct comparison. Must be run inside of the playwright container.
 - `@unstable` - A new test or test which is known to be flaky.

e2e/appActions.js

@@ -46,6 +46,7 @@
  */
 
 const Buffer = require('buffer').Buffer;
+const genUuid = require('uuid').v4;
 
 /**
  * This common function creates a domain object with the default options. It is the preferred way of creating objects
@@ -56,6 +57,10 @@ const Buffer = require('buffer').Buffer;
  * @returns {Promise<CreatedObjectInfo>} An object containing information about the newly created domain object.
  */
 async function createDomainObjectWithDefaults(page, { type, name, parent = 'mine' }) {
+    if (!name) {
+        name = `${type}:${genUuid()}`;
+    }
+
     const parentUrl = await getHashUrlToDomainObject(page, parent);
 
     // Navigate to the parent object. This is necessary to create the object
@@ -70,11 +75,14 @@ async function createDomainObjectWithDefaults(page, { type, name, parent = 'mine
     await page.click(`li:text("${type}")`);
 
     // Modify the name input field of the domain object to accept 'name'
-    if (name) {
-        const nameInput = page.locator('form[name="mctForm"] .first input[type="text"]');
-        await nameInput.fill("");
-        await nameInput.fill(name);
-    }
+    const nameInput = page.locator('form[name="mctForm"] .first input[type="text"]');
+    await nameInput.fill("");
+    await nameInput.fill(name);
+
+    // Fill the "Notes" section with information about the
+    // currently running test and its project.
+    const notesInput = page.locator('form[name="mctForm"] #notes-textarea');
+    await notesInput.fill(page.testNotes);
 
     // Click OK button and wait for Navigate event
     await Promise.all([
@@ -96,8 +104,8 @@ async function createDomainObjectWithDefaults(page, { type, name, parent = 'mine
     }
 
     return {
-        name: name || `Unnamed ${type}`,
-        uuid: uuid,
+        name,
+        uuid,
         url: objectUrl
     };
 }
@@ -225,15 +233,14 @@ async function getHashUrlToDomainObject(page, uuid) {
 }
 
 /**
- * Utilizes the OpenMCT API to detect if the given object has an active transaction (is in Edit mode).
+ * Utilizes the OpenMCT API to detect if the UI is in Edit mode.
  * @private
  * @param {import('@playwright/test').Page} page
- * @param {string | import('../src/api/objects/ObjectAPI').Identifier} identifier
- * @return {Promise<boolean>} true if the object has an active transaction, false otherwise
+ * @return {Promise<boolean>} true if the Open MCT is in Edit Mode
  */
 async function _isInEditMode(page, identifier) {
     // eslint-disable-next-line no-return-await
-    return await page.evaluate((objectIdentifier) => window.openmct.objects.isTransactionActive(objectIdentifier), identifier);
+    return await page.evaluate(() => window.openmct.editor.isEditing());
 }
 
 /**

e2e/helper/notebookUtils.js

@@ -20,6 +20,8 @@
  * at runtime from the About dialog for additional information.
  *****************************************************************************/
 
+const { createDomainObjectWithDefaults } = require('../appActions');
+
 const NOTEBOOK_DROP_AREA = '.c-notebook__drag-area';
 
 /**
@@ -38,24 +40,17 @@ async function enterTextEntry(page, text) {
 /**
  * @param {import('@playwright/test').Page} page
  */
-async function dragAndDropEmbed(page, myItemsFolderName) {
-    // Click button:has-text("Create")
-    await page.locator('button:has-text("Create")').click();
-    // Click li:has-text("Sine Wave Generator")
-    await page.locator('li:has-text("Sine Wave Generator")').click();
-    // Click form[name="mctForm"] >> text=My Items
-    await page.locator(`form[name="mctForm"] >> text=${myItemsFolderName}`).click();
-    // Click text=OK
-    await page.locator('text=OK').click();
-    // Click text=Open MCT My Items >> span >> nth=3
-    await page.locator(`text=Open MCT ${myItemsFolderName} >> span`).nth(3).click();
-    // Click text=Unnamed CUSTOM_NAME
-    await Promise.all([
-        page.waitForNavigation(),
-        page.locator('text=Unnamed CUSTOM_NAME').click()
-    ]);
-
-    await page.dragAndDrop('text=UNNAMED SINE WAVE GENERATOR', NOTEBOOK_DROP_AREA);
+async function dragAndDropEmbed(page, notebookObject) {
+    // Create example telemetry object
+    const swg = await createDomainObjectWithDefaults(page, {
+        type: "Sine Wave Generator"
+    });
+    // Navigate to notebook
+    await page.goto(notebookObject.url);
+    // Expand the tree to reveal the notebook
+    await page.click('button[title="Show selected item in tree"]');
+    // Drag and drop the SWG into the notebook
+    await page.dragAndDrop(`text=${swg.name}`, NOTEBOOK_DROP_AREA);
 }
 
 // eslint-disable-next-line no-undef

e2e/playwright-ci.config.js

@@ -14,7 +14,7 @@ const config = {
     testIgnore: '**/*.perf.spec.js', //Ignore performance tests and define in playwright-perfromance.config.js
     timeout: 60 * 1000,
     webServer: {
-        command: 'cross-env NODE_ENV=test npm run start',
+        command: 'npm run start:coverage',
         url: 'http://localhost:8080/#',
         timeout: 200 * 1000,
         reuseExistingServer: false

e2e/playwright-local.config.js

@@ -12,10 +12,7 @@ const config = {
     testIgnore: '**/*.perf.spec.js',
     timeout: 30 * 1000,
     webServer: {
-        env: {
-            NODE_ENV: 'test'
-        },
-        command: 'npm run start',
+        command: 'npm run start:coverage',
         url: 'http://localhost:8080/#',
         timeout: 120 * 1000,
         reuseExistingServer: true

e2e/playwright-performance.config.js

@@ -6,12 +6,12 @@ const CI = process.env.CI === 'true';
 
 /** @type {import('@playwright/test').PlaywrightTestConfig} */
 const config = {
-    retries: 1, //Only for debugging purposes because trace is enabled only on first retry
+    retries: 1, //Only for debugging purposes for trace: 'on-first-retry'
     testDir: 'tests/performance/',
     timeout: 60 * 1000,
     workers: 1, //Only run in serial with 1 worker
     webServer: {
-        command: 'cross-env NODE_ENV=test npm run start',
+        command: 'npm run start', //coverage not generated
         url: 'http://localhost:8080/#',
         timeout: 200 * 1000,
         reuseExistingServer: !CI

e2e/playwright-visual.config.js

@@ -4,13 +4,13 @@
 
 /** @type {import('@playwright/test').PlaywrightTestConfig<{ theme: string }>} */
 const config = {
-    retries: 1, // visual tests should never retry due to snapshot comparison errors. Leaving as a shim
+    retries: 0, // Visual tests should never retry due to snapshot comparison errors. Leaving as a shim
     testDir: 'tests/visual',
     testMatch: '**/*.visual.spec.js', // only run visual tests
     timeout: 60 * 1000,
     workers: 1, //Lower stress on Circle CI Agent for Visual tests https://github.com/percy/cli/discussions/1067
     webServer: {
-        command: 'cross-env NODE_ENV=test npm run start',
+        command: 'npm run start:coverage',
         url: 'http://localhost:8080/#',
         timeout: 200 * 1000,
         reuseExistingServer: !process.env.CI
@@ -31,7 +31,7 @@ const config = {
             }
         },
         {
-            name: 'chrome-snow-theme',
+            name: 'chrome-snow-theme', //Runs the same visual tests but with snow-theme enabled
             use: {
                 browserName: 'chromium',
                 theme: 'snow'

e2e/pluginFixtures.js

@@ -126,13 +126,21 @@ exports.test = test.extend({
     // This should follow in the Project's configuration. Can be set to 'snow' in playwright config.js
     theme: [theme, { option: true }],
     // eslint-disable-next-line no-shadow
-    page: async ({ page, theme }, use) => {
+    page: async ({ page, theme }, use, testInfo) => {
         // eslint-disable-next-line playwright/no-conditional-in-test
         if (theme === 'snow') {
             //inject snow theme
             await page.addInitScript({ path: path.join(__dirname, './helper', './useSnowTheme.js') });
         }
 
+        // Attach info about the currently running test and its project.
+        // This will be used by appActions to fill in the created
+        // domain object's notes.
+        page.testNotes = [
+            `${testInfo.titlePath.join('\n')}`,
+            `${testInfo.project.name}`
+        ].join('\n');
+
         await use(page);
     },
     myItemsFolderName: [myItemsFolderName, { option: true }],
@@ -140,22 +148,5 @@ exports.test = test.extend({
     openmctConfig: async ({ myItemsFolderName }, use) => {
         await use({ myItemsFolderName });
     }
-    // objectCreateOptions: [objectCreateOptions, {option: true}],
-    // eslint-disable-next-line no-shadow
-    // domainObject: [async ({ page, objectCreateOptions }, use) => {
-    //     // FIXME: This is a false-positive caused by a bug in the eslint-plugin-playwright rule.
-    //     // eslint-disable-next-line playwright/no-conditional-in-test
-    //     if (objectCreateOptions === null) {
-    //         await use(page);
-
-    //         return;
-    //     }
-
-    //     //Go to baseURL
-    //     await page.goto('./', { waitUntil: 'networkidle' });
-
-    //     const uuid = await getOrCreateDomainObject(page, objectCreateOptions);
-    //     await use({ uuid });
-    // }, { auto: true }]
 });
 exports.expect = expect;

e2e/tests/framework/appActions.e2e.spec.js

@@ -20,7 +20,7 @@
  * at runtime from the About dialog for additional information.
  *****************************************************************************/
 
-const { test, expect } = require('../../baseFixtures.js');
+const { test, expect } = require('../../pluginFixtures.js');
 const { createDomainObjectWithDefaults } = require('../../appActions.js');
 
 test.describe('AppActions', () => {
@@ -50,11 +50,11 @@ test.describe('AppActions', () => {
             });
 
             await page.goto(timer1.url, { waitUntil: 'networkidle' });
-            await expect(page.locator('.l-browse-bar__object-name')).toHaveText('Timer Foo');
+            await expect(page.locator('.l-browse-bar__object-name')).toHaveText(timer1.name);
             await page.goto(timer2.url, { waitUntil: 'networkidle' });
-            await expect(page.locator('.l-browse-bar__object-name')).toHaveText('Timer Bar');
+            await expect(page.locator('.l-browse-bar__object-name')).toHaveText(timer2.name);
             await page.goto(timer3.url, { waitUntil: 'networkidle' });
-            await expect(page.locator('.l-browse-bar__object-name')).toHaveText('Timer Baz');
+            await expect(page.locator('.l-browse-bar__object-name')).toHaveText(timer3.name);
         });
 
         await test.step('Create multiple nested objects in a row', async () => {
@@ -74,11 +74,11 @@ test.describe('AppActions', () => {
                 parent: folder2.uuid
             });
             await page.goto(folder1.url, { waitUntil: 'networkidle' });
-            await expect(page.locator('.l-browse-bar__object-name')).toHaveText('Folder Foo');
+            await expect(page.locator('.l-browse-bar__object-name')).toHaveText(folder1.name);
             await page.goto(folder2.url, { waitUntil: 'networkidle' });
-            await expect(page.locator('.l-browse-bar__object-name')).toHaveText('Folder Bar');
+            await expect(page.locator('.l-browse-bar__object-name')).toHaveText(folder2.name);
             await page.goto(folder3.url, { waitUntil: 'networkidle' });
-            await expect(page.locator('.l-browse-bar__object-name')).toHaveText('Folder Baz');
+            await expect(page.locator('.l-browse-bar__object-name')).toHaveText(folder3.name);
 
             expect(folder1.url).toBe(`${e2eFolder.url}/${folder1.uuid}`);
             expect(folder2.url).toBe(`${e2eFolder.url}/${folder1.uuid}/${folder2.uuid}`);

e2e/tests/framework/baseFixtures.e2e.spec.js

@@ -23,7 +23,7 @@
 /*
 This test suite is dedicated to testing our use of the playwright framework as it
 relates to how we've extended it (i.e. ./e2e/baseFixtures.js) and assumptions made in our dev environment
-(app.js and ./e2e/webpack-dev-middleware.js)
+(`npm start` and ./e2e/webpack-dev-middleware.js)
 */
 
 const { test } = require('../../baseFixtures.js');

e2e/tests/framework/exampleTemplate.e2e.spec.js

@@ -45,7 +45,7 @@
 */
 
 // Structure: Some standard Imports. Please update the required pathing.
-const { test, expect } = require('../../baseFixtures');
+const { test, expect } = require('../../pluginFixtures');
 const { createDomainObjectWithDefaults } = require('../../appActions');
 
 /**
@@ -144,5 +144,5 @@ async function renameTimerFrom3DotMenu(page, timerUrl, newNameForTimer) {
     await page.locator('text=Properties Title Notes >> input[type="text"]').fill(newNameForTimer);
 
     // Click Ok button to Save
-    await page.locator('text=OK').click();
+    await page.locator('button:has-text("OK")').click();
 }

e2e/tests/framework/generateVisualTestData.e2e.spec.js

@@ -43,14 +43,14 @@ test('Generate Visual Test Data @localStorage', async ({ page, context }) => {
     await page.locator('button:has-text("Create")').click();
 
     // add sine wave generator with defaults
-    await page.locator('li:has-text("Sine Wave Generator")').click();
+    await page.locator('li[role="menuitem"]:has-text("Sine Wave Generator")').click();
 
     //Add a 5000 ms Delay
     await page.locator('[aria-label="Loading Delay \\(ms\\)"]').fill('5000');
 
     await Promise.all([
         page.waitForNavigation(),
-        page.locator('text=OK').click(),
+        page.locator('button:has-text("OK")').click(),
         //Wait for Save Banner to appear
         page.waitForSelector('.c-message-banner__message')
     ]);
@@ -58,7 +58,7 @@ test('Generate Visual Test Data @localStorage', async ({ page, context }) => {
     // focus the overlay plot
     await page.goto(overlayPlot.url);
 
-    await expect(page.locator('.l-browse-bar__object-name')).toContainText('Unnamed Overlay Plot');
+    await expect(page.locator('.l-browse-bar__object-name')).toContainText(overlayPlot.name);
     //Save localStorage for future test execution
     await context.storageState({ path: './e2e/test-data/VisualTestData_storage.json' });
 });

e2e/tests/functional/couchdb.e2e.spec.js

@@ -25,7 +25,7 @@
 *
 */
 
-const { test, expect } = require('../../baseFixtures');
+const { test, expect } = require('../../pluginFixtures');
 
 test.describe("CouchDB Status Indicator @couchdb", () => {
     test.use({ failOnConsoleError: false });

e2e/tests/functional/example/eventGenerator.e2e.spec.js

@@ -24,7 +24,7 @@
 This test suite is dedicated to tests which verify the basic operations surrounding the example event generator.
 */
 
-const { test, expect } = require('../../../baseFixtures');
+const { test, expect } = require('../../../pluginFixtures');
 const { createDomainObjectWithDefaults } = require('../../../appActions');
 
 test.describe('Example Event Generator CRUD Operations', () => {

e2e/tests/functional/example/generator/sineWaveLimitProvider.e2e.spec.js

@@ -96,7 +96,7 @@ test.describe('Sine Wave Generator', () => {
         //Click text=OK
         await Promise.all([
             page.waitForNavigation(),
-            page.click('text=OK')
+            page.click('button:has-text("OK")')
         ]);
 
         // Verify that the Sine Wave Generator is displayed and correct

e2e/tests/functional/forms.e2e.spec.js

@@ -25,6 +25,7 @@ This test suite is dedicated to tests which verify form functionality in isolati
 */
 
 const { test, expect } = require('../../baseFixtures');
+const { createDomainObjectWithDefaults } = require('../../appActions');
 const path = require('path');
 
 const TEST_FOLDER = 'test folder';
@@ -43,7 +44,7 @@ test.describe('Form Validation Behavior', () => {
         await page.press('text=Properties Title Notes >> input[type="text"]', 'Tab');
 
         //Required Field Form Validation
-        await expect(page.locator('text=OK')).toBeDisabled();
+        await expect(page.locator('button:has-text("OK")')).toBeDisabled();
         await expect(page.locator('.c-form-row__state-indicator').first()).toHaveClass(/invalid/);
 
         //Correct Form Validation for missing title and trigger validation with 'Tab'
@@ -52,13 +53,13 @@ test.describe('Form Validation Behavior', () => {
         await page.press('text=Properties Title Notes >> input[type="text"]', 'Tab');
 
         //Required Field Form Validation is corrected
-        await expect(page.locator('text=OK')).toBeEnabled();
+        await expect(page.locator('button:has-text("OK")')).toBeEnabled();
         await expect(page.locator('.c-form-row__state-indicator').first()).not.toHaveClass(/invalid/);
 
         //Finish Creating Domain Object
         await Promise.all([
             page.waitForNavigation(),
-            page.click('text=OK')
+            page.click('button:has-text("OK")')
         ]);
 
         //Verify that the Domain Object has been created with the corrected title property
@@ -91,6 +92,44 @@ test.describe('Persistence operations @addInit', () => {
     });
 });
 
+test.describe('Persistence operations @couchdb', () => {
+    test.use({ failOnConsoleError: false });
+    test('Editing object properties should generate a single persistence operation', async ({ page }) => {
+        test.info().annotations.push({
+            type: 'issue',
+            description: 'https://github.com/nasa/openmct/issues/5616'
+        });
+
+        await page.goto('./', { waitUntil: 'networkidle' });
+
+        // Create a new 'Clock' object with default settings
+        const clock = await createDomainObjectWithDefaults(page, {
+            type: 'Clock'
+        });
+
+        // Count all persistence operations (PUT requests) for this specific object
+        let putRequestCount = 0;
+        page.on('request', req => {
+            if (req.method() === 'PUT' && req.url().endsWith(clock.uuid)) {
+                putRequestCount += 1;
+            }
+        });
+
+        // Open the edit form for the clock object
+        await page.click('button[title="More options"]');
+        await page.click('li[title="Edit properties of this object."]');
+
+        // Modify the display format from default 12hr -> 24hr and click 'Save'
+        await page.locator('select[aria-label="12 or 24 hour clock"]').selectOption({ value: 'clock24' });
+        await page.click('button[aria-label="Save"]');
+
+        await expect.poll(() => putRequestCount, {
+            message: 'Verify a single PUT request was made to persist the object',
+            timeout: 1000
+        }).toEqual(1);
+    });
+});
+
 test.describe('Form Correctness by Object Type', () => {
     test.fixme('Verify correct behavior of number object (SWG)', async ({page}) => {});
     test.fixme('Verify correct behavior of number object Timer', async ({page}) => {});

e2e/tests/functional/moveAndLinkObjects.e2e.spec.js

@@ -81,7 +81,7 @@ test.describe('Move & link item tests', () => {
         await page.locator('li.icon-move').click();
         await page.locator(`form[name="mctForm"] >> text=${myItemsFolderName}`).click();
 
-        await page.locator('text=OK').click();
+        await page.locator('button:has-text("OK")').click();
 
         // Expect that Child Folder is in My Items, the root folder
         expect(page.locator(`text=${myItemsFolderName} >> nth=0:has(text=Child Folder)`)).toBeTruthy();
@@ -95,11 +95,11 @@ test.describe('Move & link item tests', () => {
         // Create Telemetry Table
         let telemetryTable = 'Test Telemetry Table';
         await page.locator('button:has-text("Create")').click();
-        await page.locator('li:has-text("Telemetry Table")').click();
+        await page.locator('li[role="menuitem"]:has-text("Telemetry Table")').click();
         await page.locator('text=Properties Title Notes >> input[type="text"]').click();
         await page.locator('text=Properties Title Notes >> input[type="text"]').fill(telemetryTable);
 
-        await page.locator('text=OK').click();
+        await page.locator('button:has-text("OK")').click();
 
         // Finish editing and save Telemetry Table
         await page.locator('.c-button--menu.c-button--major.icon-save').click();
@@ -108,7 +108,7 @@ test.describe('Move & link item tests', () => {
         // Create New Folder Basic Domain Object
         let folder = 'Test Folder';
         await page.locator('button:has-text("Create")').click();
-        await page.locator('li:has-text("Folder")').click();
+        await page.locator('li[role="menuitem"]:has-text("Folder")').click();
         await page.locator('text=Properties Title Notes >> input[type="text"]').click();
         await page.locator('text=Properties Title Notes >> input[type="text"]').fill(folder);
 
@@ -120,7 +120,7 @@ test.describe('Move & link item tests', () => {
 
         // Continue test regardless of assertion and create it in My Items
         await page.locator(`form[name="mctForm"] >> text=${myItemsFolderName}`).click();
-        await page.locator('text=OK').click();
+        await page.locator('button:has-text("OK")').click();
 
         // Open My Items
         await page.locator(`text=Open MCT ${myItemsFolderName} >> span`).nth(3).click();
@@ -196,7 +196,7 @@ test.describe('Move & link item tests', () => {
         await page.locator('li.icon-link').click();
         await page.locator(`form[name="mctForm"] >> text=${myItemsFolderName}`).click();
 
-        await page.locator('text=OK').click();
+        await page.locator('button:has-text("OK")').click();
 
         // Expect that Child Folder is in My Items, the root folder
         expect(page.locator(`text=${myItemsFolderName} >> nth=0:has(text=Child Folder)`)).toBeTruthy();

e2e/tests/functional/plugins/conditionSet/conditionSet.e2e.spec.js

@@ -40,11 +40,11 @@ test.describe.serial('Condition Set CRUD Operations on @localStorage', () => {
         await page.goto('./', { waitUntil: 'networkidle' });
         await page.click('button:has-text("Create")');
 
-        await page.locator('li:has-text("Condition Set")').click();
+        await page.locator('li[role="menuitem"]:has-text("Condition Set")').click();
 
         await Promise.all([
             page.waitForNavigation(),
-            page.click('text=OK')
+            page.click('button:has-text("OK")')
         ]);
 
         //Save localStorage for future test execution
@@ -163,9 +163,9 @@ test.describe.serial('Condition Set CRUD Operations on @localStorage', () => {
         // Click hamburger button
         await page.locator('[title="More options"]').click();
 
-        // Click text=Remove
-        await page.locator('text=Remove').click();
-        await page.locator('text=OK').click();
+        // Click 'Remove' and press OK
+        await page.locator('li[role="menuitem"]:has-text("Remove")').click();
+        await page.locator('button:has-text("OK")').click();
 
         //Expect Unnamed Condition Set to be removed in Main View
         const numberOfConditionSetsAtEnd = await page.locator('a:has-text("Unnamed Condition Set Condition Set")').count();

e2e/tests/functional/plugins/displayLayout/displayLayout.e2e.spec.js

@@ -23,7 +23,7 @@
 const { test, expect } = require('../../../../pluginFixtures');
 const { createDomainObjectWithDefaults, setStartOffset, setFixedTimeMode, setRealTimeMode } = require('../../../../appActions');
 
-test.describe('Testing Display Layout @unstable', () => {
+test.describe('Display Layout', () => {
     let sineWaveObject;
     test.beforeEach(async ({ page }) => {
         await page.goto('./', { waitUntil: 'networkidle' });
@@ -55,12 +55,12 @@ test.describe('Testing Display Layout @unstable', () => {
         // On getting data, check if the value found in the  Display Layout is the most recent value
         // from the Sine Wave Generator
         const getTelemValuePromise = await subscribeToTelemetry(page, sineWaveObject.uuid);
-        const formattedTelemetryValue = await getTelemValuePromise;
+        const formattedTelemetryValue = getTelemValuePromise;
         const displayLayoutValuePromise = await page.waitForSelector(`text="${formattedTelemetryValue}"`);
         const displayLayoutValue = await displayLayoutValuePromise.textContent();
         const trimmedDisplayValue = displayLayoutValue.trim();
 
-        await expect(trimmedDisplayValue).toBe(formattedTelemetryValue);
+        expect(trimmedDisplayValue).toBe(formattedTelemetryValue);
     });
     test('alpha-numeric widget telemetry value exactly matches latest telemetry value received in fixed time', async ({ page }) => {
         // Create a Display Layout
@@ -86,12 +86,12 @@ test.describe('Testing Display Layout @unstable', () => {
 
         // On getting data, check if the value found in the Display Layout is the most recent value
         // from the Sine Wave Generator
-        const formattedTelemetryValue = await getTelemValuePromise;
+        const formattedTelemetryValue = getTelemValuePromise;
         const displayLayoutValuePromise = await page.waitForSelector(`text="${formattedTelemetryValue}"`);
         const displayLayoutValue = await displayLayoutValuePromise.textContent();
         const trimmedDisplayValue = displayLayoutValue.trim();
 
-        await expect(trimmedDisplayValue).toBe(formattedTelemetryValue);
+        expect(trimmedDisplayValue).toBe(formattedTelemetryValue);
     });
     test('items in a display layout can be removed with object tree context menu when viewing the display layout', async ({ page }) => {
         // Create a Display Layout
@@ -116,16 +116,20 @@ test.describe('Testing Display Layout @unstable', () => {
 
         // Bring up context menu and remove
         await page.locator('.c-tree__item.is-alias .c-tree__item__name:text("Test Sine Wave Generator")').first().click({ button: 'right' });
-        await page.locator('text=Remove').click();
-        await page.locator('text=OK').click();
+        await page.locator('li[role="menuitem"]:has-text("Remove")').click();
+        await page.locator('button:has-text("OK")').click();
 
         // delete
 
-        expect.soft(await page.locator('.l-layout .l-layout__frame').count()).toEqual(0);
+        expect(await page.locator('.l-layout .l-layout__frame').count()).toEqual(0);
     });
     test('items in a display layout can be removed with object tree context menu when viewing another item', async ({ page }) => {
+        test.info().annotations.push({
+            type: 'issue',
+            description: 'https://github.com/nasa/openmct/issues/3117'
+        });
         // Create a Display Layout
-        await createDomainObjectWithDefaults(page, {
+        const displayLayout = await createDomainObjectWithDefaults(page, {
             type: 'Display Layout',
             name: "Test Display Layout"
         });
@@ -144,18 +148,18 @@ test.describe('Testing Display Layout @unstable', () => {
         // Expand the Display Layout so we can remove the sine wave generator
         await page.locator('.c-tree__item.is-navigated-object .c-disclosure-triangle').click();
 
-        // Click the original Sine Wave Generator to navigate away from the Display Layout
-        await page.locator('.c-tree__item .c-tree__item__name:text("Test Sine Wave Generator")').click();
+        // Go to the original Sine Wave Generator to navigate away from the Display Layout
+        await page.goto(sineWaveObject.url);
 
         // Bring up context menu and remove
         await page.locator('.c-tree__item.is-alias .c-tree__item__name:text("Test Sine Wave Generator")').click({ button: 'right' });
-        await page.locator('text=Remove').click();
-        await page.locator('text=OK').click();
+        await page.locator('li[role="menuitem"]:has-text("Remove")').click();
+        await page.locator('button:has-text("OK")').click();
 
         // navigate back to the display layout to confirm it has been removed
-        await page.locator('.c-tree__item .c-tree__item__name:text("Test Display Layout")').click();
+        await page.goto(displayLayout.url);
 
-        expect.soft(await page.locator('.l-layout .l-layout__frame').count()).toEqual(0);
+        expect(await page.locator('.l-layout .l-layout__frame').count()).toEqual(0);
     });
 });
 

e2e/tests/functional/plugins/flexibleLayout/flexibleLayout.e2e.spec.js

@@ -23,12 +23,13 @@
 const { test, expect } = require('../../../../pluginFixtures');
 const { createDomainObjectWithDefaults } = require('../../../../appActions');
 
-test.describe('Testing Flexible Layout @unstable', () => {
+test.describe('Flexible Layout', () => {
+    let sineWaveObject;
     test.beforeEach(async ({ page }) => {
         await page.goto('./', { waitUntil: 'networkidle' });
 
         // Create Sine Wave Generator
-        await createDomainObjectWithDefaults(page, {
+        sineWaveObject = await createDomainObjectWithDefaults(page, {
             type: 'Sine Wave Generator',
             name: "Test Sine Wave Generator"
         });
@@ -54,13 +55,81 @@ test.describe('Testing Flexible Layout @unstable', () => {
         await page.dragAndDrop('text=Test Sine Wave Generator', '.c-fl__container.is-empty');
         await page.dragAndDrop('text=Test Clock', '.c-fl__container.is-empty');
         // Check that panes can be dragged while Flexible Layout is in Edit mode
-        let dragWrapper = await page.locator('.c-fl-container__frames-holder .c-fl-frame__drag-wrapper').first();
+        let dragWrapper = page.locator('.c-fl-container__frames-holder .c-fl-frame__drag-wrapper').first();
         await expect(dragWrapper).toHaveAttribute('draggable', 'true');
         // Save Flexible Layout
         await page.locator('button[title="Save"]').click();
         await page.locator('text=Save and Finish Editing').click();
         // Check that panes are not draggable while Flexible Layout is in Browse mode
-        dragWrapper = await page.locator('.c-fl-container__frames-holder .c-fl-frame__drag-wrapper').first();
+        dragWrapper = page.locator('.c-fl-container__frames-holder .c-fl-frame__drag-wrapper').first();
         await expect(dragWrapper).toHaveAttribute('draggable', 'false');
     });
+    test('items in a flexible layout can be removed with object tree context menu when viewing the flexible layout', async ({ page }) => {
+        // Create a Display Layout
+        await createDomainObjectWithDefaults(page, {
+            type: 'Flexible Layout',
+            name: "Test Flexible Layout"
+        });
+        // Edit Flexible Layout
+        await page.locator('[title="Edit"]').click();
+
+        // Expand the 'My Items' folder in the left tree
+        await page.locator('.c-tree__item__view-control.c-disclosure-triangle').first().click();
+        // Add the Sine Wave Generator to the Flexible Layout and save changes
+        await page.dragAndDrop('text=Test Sine Wave Generator', '.c-fl__container.is-empty');
+        await page.locator('button[title="Save"]').click();
+        await page.locator('text=Save and Finish Editing').click();
+
+        expect.soft(await page.locator('.c-fl-container__frame').count()).toEqual(1);
+
+        // Expand the Flexible Layout so we can remove the sine wave generator
+        await page.locator('.c-tree__item.is-navigated-object .c-disclosure-triangle').click();
+
+        // Bring up context menu and remove
+        await page.locator('.c-tree__item.is-alias .c-tree__item__name:text("Test Sine Wave Generator")').first().click({ button: 'right' });
+        await page.locator('li[role="menuitem"]:has-text("Remove")').click();
+        await page.locator('button:has-text("OK")').click();
+
+        // Verify that the item has been removed from the layout
+        expect(await page.locator('.c-fl-container__frame').count()).toEqual(0);
+    });
+    test('items in a flexible layout can be removed with object tree context menu when viewing another item', async ({ page }) => {
+        test.info().annotations.push({
+            type: 'issue',
+            description: 'https://github.com/nasa/openmct/issues/3117'
+        });
+        // Create a Flexible Layout
+        const flexibleLayout = await createDomainObjectWithDefaults(page, {
+            type: 'Flexible Layout',
+            name: "Test Flexible Layout"
+        });
+        // Edit Flexible Layout
+        await page.locator('[title="Edit"]').click();
+
+        // Expand the 'My Items' folder in the left tree
+        await page.locator('.c-tree__item__view-control.c-disclosure-triangle').click();
+        // Add the Sine Wave Generator to the Flexible Layout and save changes
+        await page.dragAndDrop('text=Test Sine Wave Generator', '.c-fl__container.is-empty');
+        await page.locator('button[title="Save"]').click();
+        await page.locator('text=Save and Finish Editing').click();
+
+        expect.soft(await page.locator('.c-fl-container__frame').count()).toEqual(1);
+
+        // Expand the Flexible Layout so we can remove the sine wave generator
+        await page.locator('.c-tree__item.is-navigated-object .c-disclosure-triangle').click();
+
+        // Go to the original Sine Wave Generator to navigate away from the Flexible Layout
+        await page.goto(sineWaveObject.url);
+
+        // Bring up context menu and remove
+        await page.locator('.c-tree__item.is-alias .c-tree__item__name:text("Test Sine Wave Generator")').click({ button: 'right' });
+        await page.locator('li[role="menuitem"]:has-text("Remove")').click();
+        await page.locator('button:has-text("OK")').click();
+
+        // navigate back to the display layout to confirm it has been removed
+        await page.goto(flexibleLayout.url);
+
+        // Verify that the item has been removed from the layout
+        expect(await page.locator('.c-fl-container__frame').count()).toEqual(0);
+    });
 });

e2e/tests/functional/plugins/gauge/gauge.e2e.spec.js

@@ -0,0 +1,93 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2022, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+/*
+* This test suite is dedicated to testing the Gauge component.
+*/
+
+const { test, expect } = require('../../../../baseFixtures');
+const { createDomainObjectWithDefaults } = require('../../../../appActions');
+const uuid = require('uuid').v4;
+
+test.describe('Gauge', () => {
+    let gauge;
+
+    test.beforeEach(async ({ page }) => {
+        // Open a browser, navigate to the main page, and wait until all networkevents to resolve
+        await page.goto('./', { waitUntil: 'networkidle' });
+
+        // Create the gauge
+        gauge = await createDomainObjectWithDefaults(page, { type: 'Gauge' });
+    });
+
+    test('Can add and remove telemetry sources @unstable', async ({ page }) => {
+        const editButtonLocator = page.locator('button[title="Edit"]');
+        const saveButtonLocator = page.locator('button[title="Save"]');
+
+        // Create a sine wave generator within the gauge
+        const swg1 = await createDomainObjectWithDefaults(page, {
+            type: 'Sine Wave Generator',
+            name: `swg-${uuid()}`,
+            parent: gauge.uuid
+        });
+
+        // Navigate to the gauge and verify that
+        // the SWG appears in the elements pool
+        await page.goto(gauge.url);
+        await editButtonLocator.click();
+        await expect.soft(page.locator(`#inspector-elements-tree >> text=${swg1.name}`)).toBeVisible();
+        await saveButtonLocator.click();
+        await page.locator('li[title="Save and Finish Editing"]').click();
+
+        // Create another sine wave generator within the gauge
+        const swg2 = await createDomainObjectWithDefaults(page, {
+            type: 'Sine Wave Generator',
+            name: `swg-${uuid()}`,
+            parent: gauge.uuid
+        });
+
+        // Verify that the 'Replace telemetry source' modal appears and accept it
+        await expect.soft(page.locator('text=This action will replace the current telemetry source. Do you want to continue?')).toBeVisible();
+        await page.click('text=Ok');
+
+        // Navigate to the gauge and verify that the new SWG
+        // appears in the elements pool and the old one is gone
+        await page.goto(gauge.url);
+        await editButtonLocator.click();
+        await expect.soft(page.locator(`#inspector-elements-tree >> text=${swg1.name}`)).toBeHidden();
+        await expect.soft(page.locator(`#inspector-elements-tree >> text=${swg2.name}`)).toBeVisible();
+        await saveButtonLocator.click();
+
+        // Right click on the new SWG in the elements pool and delete it
+        await page.locator(`#inspector-elements-tree >> text=${swg2.name}`).click({
+            button: 'right'
+        });
+        await page.locator('li[title="Remove this object from its containing object."]').click();
+
+        // Verify that the 'Remove object' confirmation modal appears and accept it
+        await expect.soft(page.locator('text=Warning! This action will remove this object. Are you sure you want to continue?')).toBeVisible();
+        await page.click('text=Ok');
+
+        // Verify that the elements pool shows no elements
+        await expect(page.locator('text="No contained elements"')).toBeVisible();
+    });
+});

e2e/tests/functional/plugins/imagery/exampleImagery.e2e.spec.js

@@ -40,10 +40,10 @@ test.describe('Example Imagery Object', () => {
         await page.goto('./', { waitUntil: 'networkidle' });
 
         // Create a default 'Example Imagery' object
-        await createDomainObjectWithDefaults(page, { type: 'Example Imagery' });
+        const exampleImagery = await createDomainObjectWithDefaults(page, { type: 'Example Imagery' });
 
         // Verify that the created object is focused
-        await expect(page.locator('.l-browse-bar__object-name')).toContainText('Unnamed Example Imagery');
+        await expect(page.locator('.l-browse-bar__object-name')).toContainText(exampleImagery.name);
         await page.locator(backgroundImageSelector).hover({trial: true});
     });
 
@@ -188,7 +188,7 @@ test.describe('Example Imagery in Display Layout', () => {
         await page.click('button:has-text("Create")');
 
         // Click text=Example Imagery
-        await page.click('text=Example Imagery');
+        await page.click('li[role="menuitem"]:has-text("Example Imagery")');
 
         // Clear and set Image load delay to minimum value
         await page.locator('input[type="number"]').fill('');
@@ -197,7 +197,7 @@ test.describe('Example Imagery in Display Layout', () => {
         // Click text=OK
         await Promise.all([
             page.waitForNavigation({waitUntil: 'networkidle'}),
-            page.click('text=OK'),
+            page.click('button:has-text("OK")'),
             //Wait for Save Banner to appear
             page.waitForSelector('.c-message-banner__message')
         ]);
@@ -275,7 +275,7 @@ test.describe('Example Imagery in Flexible layout', () => {
         await page.click('button:has-text("Create")');
 
         // Click text=Example Imagery
-        await page.click('text=Example Imagery');
+        await page.click('li[role="menuitem"]:has-text("Example Imagery")');
 
         // Clear and set Image load delay to minimum value
         await page.locator('input[type="number"]').fill('');
@@ -284,7 +284,7 @@ test.describe('Example Imagery in Flexible layout', () => {
         // Click text=OK
         await Promise.all([
             page.waitForNavigation({waitUntil: 'networkidle'}),
-            page.click('text=OK'),
+            page.click('button:has-text("OK")'),
             //Wait for Save Banner to appear
             page.waitForSelector('.c-message-banner__message')
         ]);
@@ -317,7 +317,7 @@ test.describe('Example Imagery in Tabs View', () => {
         await page.click('button:has-text("Create")');
 
         // Click text=Example Imagery
-        await page.click('text=Example Imagery');
+        await page.click('li[role="menuitem"]:has-text("Example Imagery")');
 
         // Clear and set Image load delay to minimum value
         await page.locator('input[type="number"]').fill('');
@@ -326,7 +326,7 @@ test.describe('Example Imagery in Tabs View', () => {
         // Click text=OK
         await Promise.all([
             page.waitForNavigation({waitUntil: 'networkidle'}),
-            page.click('text=OK'),
+            page.click('button:has-text("OK")'),
             //Wait for Save Banner to appear
             page.waitForSelector('.c-message-banner__message')
         ]);

e2e/tests/functional/plugins/notebook/notebook.e2e.spec.js

@@ -26,7 +26,7 @@ This test suite is dedicated to tests which verify the basic operations surround
 
 // FIXME: Remove this eslint exception once tests are implemented
 // eslint-disable-next-line no-unused-vars
-const { test, expect } = require('../../../../baseFixtures');
+const { test, expect } = require('../../../../pluginFixtures');
 const { expandTreePaneItemByName, createDomainObjectWithDefaults } = require('../../../../appActions');
 const nbUtils = require('../../../../helper/notebookUtils');
 

e2e/tests/functional/plugins/notebook/notebookWithCouchDB.e2e.spec.js

@@ -0,0 +1,271 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2022, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+/*
+This test suite is dedicated to tests which verify the basic operations surrounding Notebooks with CouchDB.
+*/
+
+const { test, expect } = require('../../../../pluginFixtures');
+const { createDomainObjectWithDefaults } = require('../../../../appActions');
+
+test.describe('Notebook Tests with CouchDB @couchdb', () => {
+    let testNotebook;
+    test.beforeEach(async ({ page }) => {
+        //Navigate to baseURL
+        await page.goto('./', { waitUntil: 'networkidle' });
+
+        // Create Notebook
+        testNotebook = await createDomainObjectWithDefaults(page, {
+            type: 'Notebook',
+            name: "TestNotebook"
+        });
+    });
+
+    test('Inspect Notebook Entry Network Requests', async ({ page }) => {
+        // Expand sidebar
+        await page.locator('.c-notebook__toggle-nav-button').click();
+
+        // Collect all request events to count and assert after notebook action
+        let addingNotebookElementsRequests = [];
+        page.on('request', (request) => addingNotebookElementsRequests.push(request));
+
+        let [notebookUrlRequest, allDocsRequest] = await Promise.all([
+            // Waits for the next request with the specified url
+            page.waitForRequest(`**/openmct/${testNotebook.uuid}`),
+            page.waitForRequest('**/openmct/_all_docs?include_docs=true'),
+            // Triggers the request
+            page.click('[aria-label="Add Page"]'),
+            // Ensures that there are no other network requests
+            page.waitForLoadState('networkidle')
+        ]);
+        // Assert that only two requests are made
+        // Network Requests are:
+        // 1) The actual POST to create the page
+        // 2) The shared worker event from 👆 request
+        expect(addingNotebookElementsRequests.length).toBe(2);
+
+        // Assert on request object
+        expect(notebookUrlRequest.postDataJSON().metadata.name).toBe('TestNotebook');
+        expect(notebookUrlRequest.postDataJSON().model.persisted).toBeGreaterThanOrEqual(notebookUrlRequest.postDataJSON().model.modified);
+        expect(allDocsRequest.postDataJSON().keys).toContain(testNotebook.uuid);
+
+        // Add an entry
+        // Network Requests are:
+        // 1) The actual POST to create the entry
+        // 2) The shared worker event from 👆 POST request
+        addingNotebookElementsRequests = [];
+        await page.locator('text=To start a new entry, click here or drag and drop any object').click();
+        await page.locator('[aria-label="Notebook Entry Input"]').click();
+        await page.locator('[aria-label="Notebook Entry Input"]').fill(`First Entry`);
+        await page.waitForLoadState('networkidle');
+        expect(addingNotebookElementsRequests.length).toBeLessThanOrEqual(2);
+
+        // Add some tags
+        // Network Requests are for each tag creation are:
+        // 1) Getting the original path of the parent object
+        // 2) Getting the original path of the grandparent object (recursive call)
+        // 3) Creating the annotation/tag object
+        // 4) The shared worker event from 👆 POST request
+        // 5) Mutate notebook domain object's annotationModified property
+        // 6) The shared worker event from 👆 POST request
+        // 7) Notebooks fetching new annotations due to annotationModified changed
+        // 8) The update of the notebook domain's object's modified property
+        // 9) The shared worker event from 👆 POST request
+        // 10) Entry is timestamped
+        // 11) The shared worker event from 👆 POST request
+
+        addingNotebookElementsRequests = [];
+        await page.hover(`button:has-text("Add Tag")`);
+        await page.locator(`button:has-text("Add Tag")`).click();
+        await page.locator('[placeholder="Type to select tag"]').click();
+        await page.locator('[aria-label="Autocomplete Options"] >> text=Driving').click();
+        await page.waitForSelector('[aria-label="Tag"]:has-text("Driving")');
+        page.waitForLoadState('networkidle');
+        expect(filterNonFetchRequests(addingNotebookElementsRequests).length).toBeLessThanOrEqual(11);
+
+        addingNotebookElementsRequests = [];
+        await page.hover(`button:has-text("Add Tag")`);
+        await page.locator(`button:has-text("Add Tag")`).click();
+        await page.locator('[placeholder="Type to select tag"]').click();
+        await page.locator('[aria-label="Autocomplete Options"] >> text=Drilling').click();
+        await page.waitForSelector('[aria-label="Tag"]:has-text("Drilling")');
+        page.waitForLoadState('networkidle');
+        expect(filterNonFetchRequests(addingNotebookElementsRequests).length).toBeLessThanOrEqual(11);
+
+        addingNotebookElementsRequests = [];
+        await page.hover(`button:has-text("Add Tag")`);
+        await page.locator(`button:has-text("Add Tag")`).click();
+        await page.locator('[placeholder="Type to select tag"]').click();
+        await page.locator('[aria-label="Autocomplete Options"] >> text=Science').click();
+        await page.waitForSelector('[aria-label="Tag"]:has-text("Science")');
+        page.waitForLoadState('networkidle');
+        expect(filterNonFetchRequests(addingNotebookElementsRequests).length).toBeLessThanOrEqual(11);
+
+        // Delete all the tags
+        // Network requests are:
+        // 1) Send POST to mutate _delete property to true on annotation with tag
+        // 2) The shared worker event from 👆 POST request
+        // 3) Timestamp update on entry
+        // 4) The shared worker event from 👆 POST request
+        // This happens for 3 tags so 12 requests
+        addingNotebookElementsRequests = [];
+        await page.hover('[aria-label="Tag"]:has-text("Driving")');
+        await page.locator('[aria-label="Tag"]:has-text("Driving") ~ .c-completed-tag-deletion').click();
+        await page.waitForSelector('[aria-label="Tag"]:has-text("Driving")', {state: 'hidden'});
+        await page.hover('[aria-label="Tag"]:has-text("Drilling")');
+        await page.locator('[aria-label="Tag"]:has-text("Drilling") ~ .c-completed-tag-deletion').click();
+        await page.waitForSelector('[aria-label="Tag"]:has-text("Drilling")', {state: 'hidden'});
+        page.hover('[aria-label="Tag"]:has-text("Science")');
+        await page.locator('[aria-label="Tag"]:has-text("Science") ~ .c-completed-tag-deletion').click();
+        await page.waitForSelector('[aria-label="Tag"]:has-text("Science")', {state: 'hidden'});
+        page.waitForLoadState('networkidle');
+        expect(filterNonFetchRequests(addingNotebookElementsRequests).length).toBeLessThanOrEqual(12);
+
+        // Add two more pages
+        await page.click('[aria-label="Add Page"]');
+        await page.click('[aria-label="Add Page"]');
+
+        // Add three entries
+        await page.locator('text=To start a new entry, click here or drag and drop any object').click();
+        await page.locator('[aria-label="Notebook Entry Input"]').click();
+        await page.locator('[aria-label="Notebook Entry Input"]').fill(`First Entry`);
+
+        await page.locator('text=To start a new entry, click here or drag and drop any object').click();
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=1').click();
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=1').fill(`Second Entry`);
+
+        await page.locator('text=To start a new entry, click here or drag and drop any object').click();
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=2').click();
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=2').fill(`Third Entry`);
+
+        // Add three tags
+        await page.hover(`button:has-text("Add Tag") >> nth=2`);
+        await page.locator(`button:has-text("Add Tag") >> nth=2`).click();
+        await page.locator('[placeholder="Type to select tag"]').click();
+        await page.locator('[aria-label="Autocomplete Options"] >> text=Science').click();
+        await page.waitForSelector('[aria-label="Tag"]:has-text("Science")');
+
+        await page.hover(`button:has-text("Add Tag") >> nth=2`);
+        await page.locator(`button:has-text("Add Tag") >> nth=2`).click();
+        await page.locator('[placeholder="Type to select tag"]').click();
+        await page.locator('[aria-label="Autocomplete Options"] >> text=Drilling').click();
+        await page.waitForSelector('[aria-label="Tag"]:has-text("Drilling")');
+
+        await page.hover(`button:has-text("Add Tag") >> nth=2`);
+        await page.locator(`button:has-text("Add Tag") >> nth=2`).click();
+        await page.locator('[placeholder="Type to select tag"]').click();
+        await page.locator('[aria-label="Autocomplete Options"] >> text=Driving').click();
+        await page.waitForSelector('[aria-label="Tag"]:has-text("Driving")');
+        page.waitForLoadState('networkidle');
+
+        // Add a fourth entry
+        // Network requests are:
+        // 1) Send POST to add new entry
+        // 2) The shared worker event from 👆 POST request
+        // 3) Timestamp update on entry
+        // 4) The shared worker event from 👆 POST request
+        addingNotebookElementsRequests = [];
+        await page.locator('text=To start a new entry, click here or drag and drop any object').click();
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=3').click();
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=3').fill(`Fourth Entry`);
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=3').press('Enter');
+        page.waitForLoadState('networkidle');
+
+        expect(filterNonFetchRequests(addingNotebookElementsRequests).length).toBeLessThanOrEqual(4);
+
+        // Add a fifth entry
+        // Network requests are:
+        // 1) Send POST to add new entry
+        // 2) The shared worker event from 👆 POST request
+        // 3) Timestamp update on entry
+        // 4) The shared worker event from 👆 POST request
+        addingNotebookElementsRequests = [];
+        await page.locator('text=To start a new entry, click here or drag and drop any object').click();
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=4').click();
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=4').fill(`Fifth Entry`);
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=4').press('Enter');
+        page.waitForLoadState('networkidle');
+
+        expect(filterNonFetchRequests(addingNotebookElementsRequests).length).toBeLessThanOrEqual(4);
+
+        // Add a sixth entry
+        // 1) Send POST to add new entry
+        // 2) The shared worker event from 👆 POST request
+        // 3) Timestamp update on entry
+        // 4) The shared worker event from 👆 POST request
+        addingNotebookElementsRequests = [];
+        await page.locator('text=To start a new entry, click here or drag and drop any object').click();
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=5').click();
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=5').fill(`Sixth Entry`);
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=5').press('Enter');
+        page.waitForLoadState('networkidle');
+
+        expect(filterNonFetchRequests(addingNotebookElementsRequests).length).toBeLessThanOrEqual(4);
+    });
+
+    test('Search tests', async ({ page }) => {
+        test.info().annotations.push({
+            type: 'issue',
+            description: 'https://github.com/akhenry/openmct-yamcs/issues/69'
+        });
+        await page.locator('text=To start a new entry, click here or drag and drop any object').click();
+        await page.locator('[aria-label="Notebook Entry Input"]').click();
+        await page.locator('[aria-label="Notebook Entry Input"]').fill(`First Entry`);
+        await page.locator('[aria-label="Notebook Entry Input"]').press('Enter');
+
+        // Add three tags
+        await page.hover(`button:has-text("Add Tag")`);
+        await page.locator(`button:has-text("Add Tag")`).click();
+        await page.locator('[placeholder="Type to select tag"]').click();
+        await page.locator('[aria-label="Autocomplete Options"] >> text=Science').click();
+        await page.waitForSelector('[aria-label="Tag"]:has-text("Science")');
+
+        await page.hover(`button:has-text("Add Tag")`);
+        await page.locator(`button:has-text("Add Tag")`).click();
+        await page.locator('[placeholder="Type to select tag"]').click();
+        await page.locator('[aria-label="Autocomplete Options"] >> text=Drilling').click();
+        await page.waitForSelector('[aria-label="Tag"]:has-text("Drilling")');
+
+        await page.hover(`button:has-text("Add Tag")`);
+        await page.locator(`button:has-text("Add Tag")`).click();
+        await page.locator('[placeholder="Type to select tag"]').click();
+        await page.locator('[aria-label="Autocomplete Options"] >> text=Driving').click();
+        await page.waitForSelector('[aria-label="Tag"]:has-text("Driving")');
+
+        await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').click();
+        await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').fill('Sc');
+        await expect(page.locator('[aria-label="Search Result"]').first()).toContainText("Science");
+        await expect(page.locator('[aria-label="Search Result"]').first()).not.toContainText("Driving");
+
+        await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').click();
+        await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').fill('Xq');
+        await expect(page.locator('text=No results found')).toBeVisible();
+    });
+});
+
+// Try to reduce indeterminism of browser requests by only returning fetch requests.
+// Filter out preflight CORS, fetching stylesheets, page icons, etc. that can occur during tests
+function filterNonFetchRequests(requests) {
+    return requests.filter(request => {
+        return (request.resourceType() === 'fetch');
+    });
+}

e2e/tests/functional/plugins/notebook/restrictedNotebook.e2e.spec.js

@@ -36,27 +36,27 @@ test.describe('Restricted Notebook', () => {
     });
 
     test('Can be renamed @addInit', async ({ page }) => {
-        await expect(page.locator('.l-browse-bar__object-name')).toContainText(`Unnamed ${CUSTOM_NAME}`);
+        await expect(page.locator('.l-browse-bar__object-name')).toContainText(`${notebook.name}`);
     });
 
-    test('Can be deleted if there are no locked pages @addInit', async ({ page, openmctConfig }) => {
+    test('Can be deleted if there are no locked pages @addInit', async ({ page }) => {
         await openObjectTreeContextMenu(page, notebook.url);
 
         const menuOptions = page.locator('.c-menu ul');
         await expect.soft(menuOptions).toContainText('Remove');
 
-        const restrictedNotebookTreeObject = page.locator(`a:has-text("Unnamed ${CUSTOM_NAME}")`);
+        const restrictedNotebookTreeObject = page.locator(`a:has-text("${notebook.name}")`);
 
         // notebook tree object exists
         expect.soft(await restrictedNotebookTreeObject.count()).toEqual(1);
 
         // Click Remove Text
-        await page.locator('text=Remove').click();
+        await page.locator('li[role="menuitem"]:has-text("Remove")').click();
 
         // Click 'OK' on confirmation window and wait for save banner to appear
         await Promise.all([
             page.waitForNavigation(),
-            page.locator('text=OK').click(),
+            page.locator('button:has-text("OK")').click(),
             page.waitForSelector('.c-message-banner__message')
         ]);
 
@@ -134,7 +134,7 @@ test.describe('Restricted Notebook with at least one entry and with the page loc
         // Click text=Ok
         await Promise.all([
             page.waitForNavigation(),
-            page.locator('text=Ok').click()
+            page.locator('button:has-text("OK")').click()
         ]);
 
         // deleted page, should no longer exist
@@ -145,10 +145,9 @@ test.describe('Restricted Notebook with at least one entry and with the page loc
 
 test.describe('Restricted Notebook with a page locked and with an embed @addInit', () => {
 
-    test.beforeEach(async ({ page, openmctConfig }) => {
-        const { myItemsFolderName } = openmctConfig;
-        await startAndAddRestrictedNotebookObject(page);
-        await nbUtils.dragAndDropEmbed(page, myItemsFolderName);
+    test.beforeEach(async ({ page }) => {
+        const notebook = await startAndAddRestrictedNotebookObject(page);
+        await nbUtils.dragAndDropEmbed(page, notebook);
     });
 
     test('Allows embeds to be deleted if page unlocked @addInit', async ({ page }) => {

e2e/tests/functional/plugins/notebook/tags.e2e.spec.js

@@ -36,15 +36,17 @@ async function createNotebookAndEntry(page, iterations = 1) {
     //Go to baseURL
     await page.goto('./', { waitUntil: 'networkidle' });
 
-    createDomainObjectWithDefaults(page, { type: 'Notebook' });
+    const notebook = createDomainObjectWithDefaults(page, { type: 'Notebook' });
 
     for (let iteration = 0; iteration < iterations; iteration++) {
-        // Click text=To start a new entry, click here or drag and drop any object
+        // Create an entry
         await page.locator('text=To start a new entry, click here or drag and drop any object').click();
         const entryLocator = `[aria-label="Notebook Entry Input"] >> nth = ${iteration}`;
         await page.locator(entryLocator).click();
         await page.locator(entryLocator).fill(`Entry ${iteration}`);
     }
+
+    return notebook;
 }
 
 /**
@@ -53,7 +55,7 @@ async function createNotebookAndEntry(page, iterations = 1) {
   * @param {number} [iterations = 1] - the number of entries (and tags) to create
   */
 async function createNotebookEntryAndTags(page, iterations = 1) {
-    await createNotebookAndEntry(page, iterations);
+    const notebook = await createNotebookAndEntry(page, iterations);
 
     for (let iteration = 0; iteration < iterations; iteration++) {
         // Hover and click "Add Tag" button
@@ -75,16 +77,16 @@ async function createNotebookEntryAndTags(page, iterations = 1) {
         // Select the "Science" tag
         await page.locator('[aria-label="Autocomplete Options"] >> text=Science').click();
     }
+
+    return notebook;
 }
 
 test.describe('Tagging in Notebooks @addInit', () => {
     test('Can load tags', async ({ page }) => {
 
         await createNotebookAndEntry(page);
-        // Click text=To start a new entry, click here or drag and drop any object
         await page.locator('button:has-text("Add Tag")').click();
 
-        // Click [placeholder="Type to select tag"]
         await page.locator('[placeholder="Type to select tag"]').click();
 
         await expect(page.locator('[aria-label="Autocomplete Options"]')).toContainText("Science");
@@ -97,9 +99,7 @@ test.describe('Tagging in Notebooks @addInit', () => {
         await expect(page.locator('[aria-label="Notebook Entry"]')).toContainText("Science");
         await expect(page.locator('[aria-label="Notebook Entry"]')).toContainText("Driving");
 
-        // Click button:has-text("Add Tag")
         await page.locator('button:has-text("Add Tag")').click();
-        // Click [placeholder="Type to select tag"]
         await page.locator('[placeholder="Type to select tag"]').click();
 
         await expect(page.locator('[aria-label="Autocomplete Options"]')).not.toContainText("Science");
@@ -108,43 +108,56 @@ test.describe('Tagging in Notebooks @addInit', () => {
     });
     test('Can search for tags', async ({ page }) => {
         await createNotebookEntryAndTags(page);
-        // Click [aria-label="OpenMCT Search"] input[type="search"]
         await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').click();
-        // Fill [aria-label="OpenMCT Search"] input[type="search"]
         await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').fill('sc');
         await expect(page.locator('[aria-label="Search Result"]')).toContainText("Science");
-        await expect(page.locator('[aria-label="Search Result"]')).toContainText("Driving");
+        await expect(page.locator('[aria-label="Search Result"]')).not.toContainText("Driving");
 
-        // Click [aria-label="OpenMCT Search"] input[type="search"]
         await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').click();
-        // Fill [aria-label="OpenMCT Search"] input[type="search"]
         await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').fill('Sc');
         await expect(page.locator('[aria-label="Search Result"]')).toContainText("Science");
-        await expect(page.locator('[aria-label="Search Result"]')).toContainText("Driving");
+        await expect(page.locator('[aria-label="Search Result"]')).not.toContainText("Driving");
 
-        // Click [aria-label="OpenMCT Search"] input[type="search"]
         await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').click();
-        // Fill [aria-label="OpenMCT Search"] input[type="search"]
         await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').fill('Xq');
-        await expect(page.locator('[aria-label="Search Result"]')).toBeHidden();
-        await expect(page.locator('[aria-label="Search Result"]')).toBeHidden();
+        await expect(page.locator('text=No results found')).toBeVisible();
     });
 
     test('Can delete tags', async ({ page }) => {
         await createNotebookEntryAndTags(page);
         await page.locator('[aria-label="Notebook Entries"]').click();
         // Delete Driving
-        await page.hover('.c-tag__label:has-text("Driving")');
-        await page.locator('.c-tag__label:has-text("Driving") ~ .c-completed-tag-deletion').click();
+        await page.hover('[aria-label="Tag"]:has-text("Driving")');
+        await page.locator('[aria-label="Tag"]:has-text("Driving") ~ .c-completed-tag-deletion').click();
 
         await expect(page.locator('[aria-label="Notebook Entry"]')).toContainText("Science");
         await expect(page.locator('[aria-label="Notebook Entry"]')).not.toContainText("Driving");
 
-        // Fill [aria-label="OpenMCT Search"] input[type="search"]
         await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').fill('sc');
         await expect(page.locator('[aria-label="Search Result"]')).not.toContainText("Driving");
     });
 
+    test('Can delete entries without tags', async ({ page }) => {
+        test.info().annotations.push({
+            type: 'issue',
+            description: 'https://github.com/nasa/openmct/issues/5823'
+        });
+
+        await createNotebookEntryAndTags(page);
+
+        await page.locator('text=To start a new entry, click here or drag and drop any object').click();
+        const entryLocator = `[aria-label="Notebook Entry Input"] >> nth = 1`;
+        await page.locator(entryLocator).click();
+        await page.locator(entryLocator).fill(`An entry without tags`);
+        await page.locator('[aria-label="Notebook Entry Input"] >> nth=1').press('Enter');
+
+        await page.hover('[aria-label="Notebook Entry Input"] >> nth=1');
+        await page.locator('button[title="Delete this entry"]').last().click();
+        await expect(page.locator('text=This action will permanently delete this entry. Do you wish to continue?')).toBeVisible();
+        await page.locator('button:has-text("Ok")').click();
+        await expect(page.locator('text=This action will permanently delete this entry. Do you wish to continue?')).toBeHidden();
+    });
+
     test('Can delete objects with tags and neither return in search', async ({ page }) => {
         await createNotebookEntryAndTags(page);
         // Delete Notebook
@@ -153,7 +166,6 @@ test.describe('Tagging in Notebooks @addInit', () => {
         await page.locator('button:has-text("OK")').click();
         await page.goto('./', { waitUntil: 'networkidle' });
 
-        // Fill [aria-label="OpenMCT Search"] input[type="search"]
         await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').fill('Unnamed');
         await expect(page.locator('text=No results found')).toBeVisible();
         await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').fill('sci');
@@ -165,10 +177,10 @@ test.describe('Tagging in Notebooks @addInit', () => {
         //Go to baseURL
         await page.goto('./', { waitUntil: 'networkidle' });
 
-        await createDomainObjectWithDefaults(page, { type: 'Clock' });
+        const clock = await createDomainObjectWithDefaults(page, { type: 'Clock' });
 
         const ITERATIONS = 4;
-        await createNotebookEntryAndTags(page, ITERATIONS);
+        const notebook = await createNotebookEntryAndTags(page, ITERATIONS);
 
         for (let iteration = 0; iteration < ITERATIONS; iteration++) {
             const entryLocator = `[aria-label="Notebook Entry"] >> nth = ${iteration}`;
@@ -181,11 +193,11 @@ test.describe('Tagging in Notebooks @addInit', () => {
             page.goto('./#/browse/mine?hideTree=false'),
             page.click('.c-disclosure-triangle')
         ]);
-        // Click Unnamed Clock
-        await page.click('text="Unnamed Clock"');
+        // Click Clock
+        await page.click(`text=${clock.name}`);
 
-        // Click Unnamed Notebook
-        await page.click('text="Unnamed Notebook"');
+        // Click Notebook
+        await page.click(`text=${notebook.name}`);
 
         for (let iteration = 0; iteration < ITERATIONS; iteration++) {
             const entryLocator = `[aria-label="Notebook Entry"] >> nth = ${iteration}`;
@@ -199,14 +211,13 @@ test.describe('Tagging in Notebooks @addInit', () => {
             page.waitForLoadState('networkidle')
         ]);
 
-        // Click Unnamed Notebook
-        await page.click('text="Unnamed Notebook"');
+        // Click Notebook
+        await page.click(`text="${notebook.name}"`);
 
         for (let iteration = 0; iteration < ITERATIONS; iteration++) {
             const entryLocator = `[aria-label="Notebook Entry"] >> nth = ${iteration}`;
             await expect(page.locator(entryLocator)).toContainText("Science");
             await expect(page.locator(entryLocator)).toContainText("Driving");
         }
-
     });
 });

e2e/tests/functional/plugins/plot/autoscale.e2e.spec.js

@@ -110,10 +110,10 @@ async function createSinewaveOverlayPlot(page, myItemsFolderName) {
     await page.locator('button:has-text("Create")').click();
 
     // add overlay plot with defaults
-    await page.locator('li:has-text("Overlay Plot")').click();
+    await page.locator('li[role="menuitem"]:has-text("Overlay Plot")').click();
     await Promise.all([
         page.waitForNavigation(),
-        page.locator('text=OK').click(),
+        page.locator('button:has-text("OK")').click(),
         //Wait for Save Banner to appear1
         page.waitForSelector('.c-message-banner__message')
     ]);
@@ -129,10 +129,10 @@ async function createSinewaveOverlayPlot(page, myItemsFolderName) {
     await page.locator('button:has-text("Create")').click();
 
     // add sine wave generator with defaults
-    await page.locator('li:has-text("Sine Wave Generator")').click();
+    await page.locator('li[role="menuitem"]:has-text("Sine Wave Generator")').click();
     await Promise.all([
         page.waitForNavigation(),
-        page.locator('text=OK').click(),
+        page.locator('button:has-text("OK")').click(),
         //Wait for Save Banner to appear1
         page.waitForSelector('.c-message-banner__message')
     ]);

e2e/tests/functional/plugins/plot/logPlot.e2e.spec.js

@@ -88,10 +88,10 @@ async function makeOverlayPlot(page, myItemsFolderName) {
     // create overlay plot
 
     await page.locator('button.c-create-button').click();
-    await page.locator('li:has-text("Overlay Plot")').click();
+    await page.locator('li[role="menuitem"]:has-text("Overlay Plot")').click();
     await Promise.all([
         page.waitForNavigation({ waitUntil: 'networkidle'}),
-        page.locator('text=OK').click(),
+        page.locator('button:has-text("OK")').click(),
         //Wait for Save Banner to appear
         page.waitForSelector('.c-message-banner__message')
     ]);
@@ -106,7 +106,7 @@ async function makeOverlayPlot(page, myItemsFolderName) {
     // create a sinewave generator
 
     await page.locator('button.c-create-button').click();
-    await page.locator('li:has-text("Sine Wave Generator")').click();
+    await page.locator('li[role="menuitem"]:has-text("Sine Wave Generator")').click();
 
     // set amplitude to 6, offset 4, period 2
 
@@ -123,7 +123,7 @@ async function makeOverlayPlot(page, myItemsFolderName) {
 
     await Promise.all([
         page.waitForNavigation({ waitUntil: 'networkidle'}),
-        page.locator('text=OK').click(),
+        page.locator('button:has-text("OK")').click(),
         //Wait for Save Banner to appear
         page.waitForSelector('.c-message-banner__message')
     ]);

e2e/tests/functional/plugins/plot/missingPlotObj.e2e.spec.js

@@ -88,11 +88,11 @@ async function makeStackedPlot(page, myItemsFolderName) {
 
     // create stacked plot
     await page.locator('button.c-create-button').click();
-    await page.locator('li:has-text("Stacked Plot")').click();
+    await page.locator('li[role="menuitem"]:has-text("Stacked Plot")').click();
 
     await Promise.all([
         page.waitForNavigation({ waitUntil: 'networkidle'}),
-        page.locator('text=OK').click(),
+        page.locator('button:has-text("OK")').click(),
         //Wait for Save Banner to appear
         page.waitForSelector('.c-message-banner__message')
     ]);
@@ -146,11 +146,11 @@ async function saveStackedPlot(page) {
 async function createSineWaveGenerator(page) {
     //Create sine wave generator
     await page.locator('button.c-create-button').click();
-    await page.locator('li:has-text("Sine Wave Generator")').click();
+    await page.locator('li[role="menuitem"]:has-text("Sine Wave Generator")').click();
 
     await Promise.all([
         page.waitForNavigation({ waitUntil: 'networkidle'}),
-        page.locator('text=OK').click(),
+        page.locator('button:has-text("OK")').click(),
         //Wait for Save Banner to appear
         page.waitForSelector('.c-message-banner__message')
     ]);

e2e/tests/functional/plugins/plot/plotLegendSwatch.e2e.spec.js

@@ -68,10 +68,10 @@ async function makeOverlayPlot(page) {
     // create overlay plot
 
     await page.locator('button.c-create-button').click();
-    await page.locator('li:has-text("Overlay Plot")').click();
+    await page.locator('li[role="menuitem"]:has-text("Overlay Plot")').click();
     await Promise.all([
         page.waitForNavigation({ waitUntil: 'networkidle'}),
-        page.locator('text=OK').click(),
+        page.locator('button:has-text("OK")').click(),
         //Wait for Save Banner to appear
         page.waitForSelector('.c-message-banner__message')
     ]);
@@ -86,13 +86,13 @@ async function makeOverlayPlot(page) {
     // create a sinewave generator
 
     await page.locator('button.c-create-button').click();
-    await page.locator('li:has-text("Sine Wave Generator")').click();
+    await page.locator('li[role="menuitem"]:has-text("Sine Wave Generator")').click();
 
     // Click OK to make generator
 
     await Promise.all([
         page.waitForNavigation({ waitUntil: 'networkidle'}),
-        page.locator('text=OK').click(),
+        page.locator('button:has-text("OK")').click(),
         //Wait for Save Banner to appear
         page.waitForSelector('.c-message-banner__message')
     ]);

e2e/tests/functional/plugins/plot/plotRendering.e2e.spec.js

@@ -0,0 +1,54 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2022, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+/*
+* This test suite is dedicated to testing the rendering and interaction of plots.
+*
+*/
+
+const { test, expect } = require('../../../../pluginFixtures');
+const { createDomainObjectWithDefaults } = require('../../../../appActions');
+
+test.describe('Plot Integrity Testing @unstable', () => {
+    let sineWaveGeneratorObject;
+
+    test.beforeEach(async ({ page }) => {
+        //Open a browser, navigate to the main page, and wait until all networkevents to resolve
+        await page.goto('./', { waitUntil: 'networkidle' });
+        sineWaveGeneratorObject = await createDomainObjectWithDefaults(page, { type: 'Sine Wave Generator' });
+    });
+
+    test('Plots do not re-request data when a plot is clicked', async ({ page }) => {
+        //Navigate to Sine Wave Generator
+        await page.goto(sineWaveGeneratorObject.url);
+        //Capture the number of plots points and store as const name numberOfPlotPoints
+        //Click on the plot canvas
+        await page.locator('canvas').nth(1).click();
+        //No request was made to get historical data
+        const createMineFolderRequests = [];
+        page.on('request', req => {
+            // eslint-disable-next-line playwright/no-conditional-in-test
+            createMineFolderRequests.push(req);
+        });
+        expect(createMineFolderRequests.length).toEqual(0);
+    });
+});

e2e/tests/functional/plugins/plot/scatterPlot.e2e.spec.js

@@ -0,0 +1,93 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2022, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+/*
+* This test suite is dedicated to testing the Scatter Plot component.
+*/
+
+const { test, expect } = require('../../../../pluginFixtures');
+const { createDomainObjectWithDefaults } = require('../../../../appActions');
+const uuid = require('uuid').v4;
+
+test.describe('Scatter Plot', () => {
+    let scatterPlot;
+
+    test.beforeEach(async ({ page }) => {
+        // Open a browser, navigate to the main page, and wait until all networkevents to resolve
+        await page.goto('./', { waitUntil: 'networkidle' });
+
+        // Create the Scatter Plot
+        scatterPlot = await createDomainObjectWithDefaults(page, { type: 'Scatter Plot' });
+    });
+
+    test('Can add and remove telemetry sources', async ({ page }) => {
+        const editButtonLocator = page.locator('button[title="Edit"]');
+        const saveButtonLocator = page.locator('button[title="Save"]');
+
+        // Create a sine wave generator within the scatter plot
+        const swg1 = await createDomainObjectWithDefaults(page, {
+            type: 'Sine Wave Generator',
+            name: `swg-${uuid()}`,
+            parent: scatterPlot.uuid
+        });
+
+        // Navigate to the scatter plot and verify that
+        // the SWG appears in the elements pool
+        await page.goto(scatterPlot.url);
+        await editButtonLocator.click();
+        await expect.soft(page.locator(`#inspector-elements-tree >> text=${swg1.name}`)).toBeVisible();
+        await saveButtonLocator.click();
+        await page.locator('li[title="Save and Finish Editing"]').click();
+
+        // Create another sine wave generator within the scatter plot
+        const swg2 = await createDomainObjectWithDefaults(page, {
+            type: 'Sine Wave Generator',
+            name: `swg-${uuid()}`,
+            parent: scatterPlot.uuid
+        });
+
+        // Verify that the 'Replace telemetry source' modal appears and accept it
+        await expect.soft(page.locator('text=This action will replace the current telemetry source. Do you want to continue?')).toBeVisible();
+        await page.click('text=Ok');
+
+        // Navigate to the scatter plot and verify that the new SWG
+        // appears in the elements pool and the old one is gone
+        await page.goto(scatterPlot.url);
+        await editButtonLocator.click();
+        await expect.soft(page.locator(`#inspector-elements-tree >> text=${swg1.name}`)).toBeHidden();
+        await expect.soft(page.locator(`#inspector-elements-tree >> text=${swg2.name}`)).toBeVisible();
+        await saveButtonLocator.click();
+
+        // Right click on the new SWG in the elements pool and delete it
+        await page.locator(`#inspector-elements-tree >> text=${swg2.name}`).click({
+            button: 'right'
+        });
+        await page.locator('li[title="Remove this object from its containing object."]').click();
+
+        // Verify that the 'Remove object' confirmation modal appears and accept it
+        await expect.soft(page.locator('text=Warning! This action will remove this object. Are you sure you want to continue?')).toBeVisible();
+        await page.click('text=Ok');
+
+        // Verify that the elements pool shows no elements
+        await expect(page.locator('text="No contained elements"')).toBeVisible();
+    });
+});

e2e/tests/functional/plugins/timeConductor/timeConductor.e2e.spec.js

@@ -20,7 +20,7 @@
  * at runtime from the About dialog for additional information.
  *****************************************************************************/
 
-const { test, expect } = require('../../../../baseFixtures');
+const { test, expect } = require('../../../../pluginFixtures');
 const { setFixedTimeMode, setRealTimeMode, setStartOffset, setEndOffset } = require('../../../../appActions');
 
 test.describe('Time conductor operations', () => {
@@ -168,3 +168,23 @@ test.describe('Time conductor input fields real-time mode', () => {
         // select an option and verify the offsets are updated correctly
     });
 });
+
+test.describe('Time Conductor History', () => {
+    test("shows milliseconds on hover @unstable", async ({ page }) => {
+        test.info().annotations.push({
+            type: 'issue',
+            description: 'https://github.com/nasa/openmct/issues/4386'
+        });
+        // Navigate to Open MCT in Fixed Time Mode, UTC Time System
+        // with startBound at 2022-01-01 00:00:00.000Z
+        // and endBound at 2022-01-01 00:00:00.200Z
+        await page.goto('./#/browse/mine?view=grid&tc.mode=fixed&tc.startBound=1640995200000&tc.endBound=1640995200200&tc.timeSystem=utc&hideInspector=true', { waitUntil: 'networkidle' });
+        await page.locator("[aria-label='Time Conductor History']").hover({ trial: true});
+        await page.locator("[aria-label='Time Conductor History']").click();
+
+        // Validate history item format
+        const historyItem = page.locator('text="2022-01-01 00:00:00 + 200ms"');
+        await expect(historyItem).toBeEnabled();
+        await expect(historyItem).toHaveAttribute('title', '2022-01-01 00:00:00.000 - 2022-01-01 00:00:00.200');
+    });
+});

e2e/tests/functional/plugins/timer/timer.e2e.spec.js

@@ -30,7 +30,7 @@ test.describe('Timer', () => {
         timer = await createDomainObjectWithDefaults(page, { type: 'timer' });
     });
 
-    test('Can perform actions on the Timer', async ({ page, openmctConfig }) => {
+    test('Can perform actions on the Timer', async ({ page }) => {
         test.info().annotations.push({
             type: 'issue',
             description: 'https://github.com/nasa/openmct/issues/4313'

e2e/tests/functional/search.e2e.spec.js

@@ -31,7 +31,7 @@ test.describe('Grand Search', () => {
     test('Can search for objects, and subsequent search dropdown behaves properly', async ({ page, openmctConfig }) => {
         const { myItemsFolderName } = openmctConfig;
 
-        await createObjectsForSearch(page, myItemsFolderName);
+        const createdObjects = await createObjectsForSearch(page);
 
         // Click [aria-label="OpenMCT Search"] input[type="search"]
         await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').click();
@@ -41,8 +41,8 @@ test.describe('Grand Search', () => {
         await expect(page.locator('[aria-label="Search Result"] >> nth=1')).toContainText(`Clock B ${myItemsFolderName} Red Folder Blue Folder`);
         await expect(page.locator('[aria-label="Search Result"] >> nth=2')).toContainText(`Clock C ${myItemsFolderName} Red Folder Blue Folder`);
         await expect(page.locator('[aria-label="Search Result"] >> nth=3')).toContainText(`Clock D ${myItemsFolderName} Red Folder Blue Folder`);
-        // Click text=Elements >> nth=0
-        await page.locator('text=Elements').first().click();
+        // Click the Elements pool to dismiss the search menu
+        await page.locator('.l-pane__label:has-text("Elements")').click();
         await expect(page.locator('[aria-label="Search Result"] >> nth=0')).toBeHidden();
 
         await page.locator('[aria-label="OpenMCT Search"] [aria-label="Search Input"]').click();
@@ -77,7 +77,7 @@ test.describe('Grand Search', () => {
         await expect(page.locator('.is-object-type-clock')).toBeVisible();
 
         await page.locator('[aria-label="OpenMCT Search"] [aria-label="Search Input"]').fill('Disp');
-        await expect(page.locator('[aria-label="Search Result"] >> nth=0')).toContainText('Unnamed Display Layout');
+        await expect(page.locator('[aria-label="Search Result"] >> nth=0')).toContainText(createdObjects.displayLayout.name);
         await expect(page.locator('[aria-label="Search Result"] >> nth=0')).not.toContainText('Folder');
 
         await page.locator('[aria-label="OpenMCT Search"] input[type="search"]').fill('Clock C');
@@ -185,7 +185,7 @@ async function createFolderObject(page, folderName) {
     await page.locator('text=Properties Title Notes >> input[type="text"]').fill(folderName);
 
     // Create folder object
-    await page.locator('text=OK').click();
+    await page.locator('button:has-text("OK")').click();
 }
 
 async function waitForSearchCompletion(page) {
@@ -197,75 +197,56 @@ async function waitForSearchCompletion(page) {
   * Creates some domain objects for searching
   * @param {import('@playwright/test').Page} page
   */
-async function createObjectsForSearch(page, myItemsFolderName) {
+async function createObjectsForSearch(page) {
     //Go to baseURL
     await page.goto('./', { waitUntil: 'networkidle' });
 
-    await page.locator('button:has-text("Create")').click();
-    await page.locator('li:has-text("Folder") >> nth=1').click();
-    await Promise.all([
-        page.waitForNavigation(),
-        await page.locator('text=Properties Title Notes >> input[type="text"]').fill('Red Folder'),
-        await page.locator(`text=Save In Open MCT ${myItemsFolderName} >> span`).nth(3).click(),
-        page.locator('button:has-text("OK")').click()
-    ]);
+    const redFolder = await createDomainObjectWithDefaults(page, {
+        type: 'Folder',
+        name: 'Red Folder'
+    });
 
-    await page.locator('button:has-text("Create")').click();
-    await page.locator('li:has-text("Folder") >> nth=2').click();
-    await Promise.all([
-        page.waitForNavigation(),
-        await page.locator('text=Properties Title Notes >> input[type="text"]').fill('Blue Folder'),
-        await page.locator('form[name="mctForm"] >> text=Red Folder').click(),
-        page.locator('button:has-text("OK")').click()
-    ]);
+    const blueFolder = await createDomainObjectWithDefaults(page, {
+        type: 'Folder',
+        name: 'Blue Folder',
+        parent: redFolder.uuid
+    });
 
-    await page.locator('button:has-text("Create")').click();
-    await page.locator('li[title="A digital clock that uses system time and supports a variety of display formats and timezones."]').click();
-    await Promise.all([
-        page.waitForNavigation(),
-        await page.locator('text=Properties Title Notes >> input[type="text"] >> nth=0').fill('Clock A'),
-        await page.locator('form[name="mctForm"] >> text=Blue Folder').click(),
-        page.locator('button:has-text("OK")').click()
-    ]);
+    const clockA = await createDomainObjectWithDefaults(page, {
+        type: 'Clock',
+        name: 'Clock A',
+        parent: blueFolder.uuid
+    });
+    const clockB = await createDomainObjectWithDefaults(page, {
+        type: 'Clock',
+        name: 'Clock B',
+        parent: blueFolder.uuid
+    });
+    const clockC = await createDomainObjectWithDefaults(page, {
+        type: 'Clock',
+        name: 'Clock C',
+        parent: blueFolder.uuid
+    });
+    const clockD = await createDomainObjectWithDefaults(page, {
+        type: 'Clock',
+        name: 'Clock D',
+        parent: blueFolder.uuid
+    });
 
-    await page.locator('button:has-text("Create")').click();
-    await page.locator('li[title="A digital clock that uses system time and supports a variety of display formats and timezones."]').click();
-    await Promise.all([
-        page.waitForNavigation(),
-        await page.locator('text=Properties Title Notes >> input[type="text"] >> nth=0').fill('Clock B'),
-        await page.locator('form[name="mctForm"] >> text=Blue Folder').click(),
-        page.locator('button:has-text("OK")').click()
-    ]);
+    const displayLayout = await createDomainObjectWithDefaults(page, {
+        type: 'Display Layout'
+    });
 
-    await page.locator('button:has-text("Create")').click();
-    await page.locator('li[title="A digital clock that uses system time and supports a variety of display formats and timezones."]').click();
-    await Promise.all([
-        page.waitForNavigation(),
-        await page.locator('text=Properties Title Notes >> input[type="text"] >> nth=0').fill('Clock C'),
-        await page.locator('form[name="mctForm"] >> text=Blue Folder').click(),
-        page.locator('button:has-text("OK")').click()
-    ]);
+    // Go back into edit mode for the display layout
+    await page.locator('button[title="Edit"]').click();
 
-    await page.locator('button:has-text("Create")').click();
-    await page.locator('li[title="A digital clock that uses system time and supports a variety of display formats and timezones."]').click();
-    await Promise.all([
-        page.waitForNavigation(),
-        await page.locator('text=Properties Title Notes >> input[type="text"] >> nth=0').fill('Clock D'),
-        await page.locator('form[name="mctForm"] >> text=Blue Folder').click(),
-        page.locator('button:has-text("OK")').click()
-    ]);
-
-    await Promise.all([
-        page.waitForNavigation(),
-        page.locator(`a:has-text("${myItemsFolderName}") >> nth=0`).click()
-    ]);
-    // Click button:has-text("Create")
-    await page.locator('button:has-text("Create")').click();
-    // Click li:has-text("Notebook")
-    await page.locator('li:has-text("Display Layout")').click();
-    // Click button:has-text("OK")
-    await Promise.all([
-        page.waitForNavigation(),
-        page.locator('button:has-text("OK")').click()
-    ]);
+    return {
+        redFolder,
+        blueFolder,
+        clockA,
+        clockB,
+        clockC,
+        clockD,
+        displayLayout
+    };
 }

e2e/tests/performance/imagery.perf.spec.js

@@ -53,7 +53,7 @@ test.describe('Performance tests', () => {
         await page.setInputFiles('#fileElem', filePath);
 
         // Click text=OK
-        await page.locator('text=OK').click();
+        await page.locator('button:has-text("OK")').click();
 
         await expect(page.locator('a:has-text("Performance Display Layout Display Layout")')).toBeVisible();
 

e2e/tests/visual/controlledClock.visual.spec.js

@@ -22,7 +22,7 @@
 
 /*
 Collection of Visual Tests set to run in a default context. The tests within this suite
-are only meant to run against openmct's app.js started by `npm run start` within the
+are only meant to run against openmct started by `npm start` within the
 `./e2e/playwright-visual.config.js` file.
 
 */

e2e/tests/visual/default.visual.spec.js

@@ -22,7 +22,7 @@
 
 /*
 Collection of Visual Tests set to run in a default context. The tests within this suite
-are only meant to run against openmct's app.js started by `npm run start` within the
+are only meant to run against openmct started by `npm start` within the
 `./e2e/playwright-visual.config.js` file.
 
 These should only use functional expect statements to verify assumptions about the state

index.html

@@ -75,7 +75,8 @@
         const TWO_HOURS = ONE_HOUR * 2;
         const ONE_DAY = ONE_HOUR * 24;
 
-        openmct.install(openmct.plugins.LocalStorage());
+        // openmct.install(openmct.plugins.LocalStorage());
+        openmct.install(openmct.plugins.CouchDB("http://localhost:5984/openmct"));
 
         openmct.install(openmct.plugins.example.Generator());
         openmct.install(openmct.plugins.example.EventGeneratorPlugin());

jsdoc.json

@@ -1,12 +0,0 @@
-{
-    "source": {
-        "include": [
-            "src/"
-        ],
-        "includePattern": "src/.+\\.js$",
-        "excludePattern": ".+\\Spec\\.js$|lib/.+"
-    },
-    "plugins": [
-        "plugins/markdown"
-    ]
-}

karma.conf.js

@@ -23,14 +23,32 @@
 /*global module,process*/
 
 module.exports = (config) => {
-    const webpackConfig = require('./webpack.coverage.js');
+    let webpackConfig;
+    let browsers;
+    let singleRun;
+
+    if (process.env.KARMA_DEBUG) {
+        webpackConfig = require('./webpack.dev.js');
+        browsers = ['ChromeDebugging'];
+        singleRun = false;
+    } else {
+        webpackConfig = require('./webpack.coverage.js');
+        browsers = ['ChromeHeadless'];
+        singleRun = true;
+    }
+
     delete webpackConfig.output;
+    // karma doesn't support webpack entry
+    delete webpackConfig.entry;
 
     config.set({
         basePath: '',
-        frameworks: ['jasmine'],
+        frameworks: ['jasmine', 'webpack'],
         files: [
             'indexTest.js',
+            // included means: should the files be included in the browser using <script> tag?
+            // We don't want them as a <script> because the shared worker source
+            // needs loaded remotely by the shared worker process.
             {
                 pattern: 'dist/couchDBChangesFeed.js*',
                 included: false
@@ -46,7 +64,7 @@ module.exports = (config) => {
         ],
         port: 9876,
         reporters: ['spec', 'junit', 'coverage-istanbul'],
-        browsers: [process.env.NODE_ENV === 'debug' ? 'ChromeDebugging' : 'ChromeHeadless'],
+        browsers,
         client: {
             jasmine: {
                 random: false,
@@ -70,6 +88,7 @@ module.exports = (config) => {
         },
         coverageIstanbulReporter: {
             fixWebpackSourcePaths: true,
+            skipFilesWithNoCoverage: true,
             dir: "coverage/unit", //Sets coverage file to be consumed by codecov.io
             reports: ['lcovonly']
         },
@@ -90,7 +109,7 @@ module.exports = (config) => {
             stats: 'errors-warnings'
         },
         concurrency: 1,
-        singleRun: true,
+        singleRun,
         browserNoActivityTimeout: 400000
     });
 };

lighthouserc.yml

@@ -1,96 +0,0 @@
----
-ci:
-  collect:
-    urls:
-    - http://localhost/
-    numberOfRuns: 5
-    settings:
-      onlyCategories:
-      - performance
-      - best-practices
-  upload:
-    target: temporary-public-storage
-  assert:
-    preset: lighthouse:recommended
-    assertions:
-      ### Applicable assertions
-      bootup-time:
-      - warn
-      - minScore: 0.88 #Original value was calculated at 0.88
-      dom-size: 
-      - error
-      - maxNumericValue: 200 #Original value was calculated at 188
-      first-contentful-paint:
-      - error
-      - minScore: 0.07 #Original value was calculated at 0.08
-      mainthread-work-breakdown:
-      - warn
-      - minScore: 0.8 #Original value was calculated at 0.8
-      unused-javascript:
-      - warn
-      - maxLength: 1
-      - error
-      - maxNumericValue: 2000 #Original value was calculated at 1855
-      unused-css-rules: warn
-      installable-manifest: warn
-      service-worker: warn
-      ### Disabled seo, accessibility, and pwa assertions, below
-      categories:seo: 'off'
-      categories:accessibility: 'off'
-      categories:pwa: 'off'
-      accesskeys: 'off'
-      apple-touch-icon: 'off'
-      aria-allowed-attr: 'off'
-      aria-command-name: 'off'
-      aria-hidden-body: 'off'
-      aria-hidden-focus: 'off'
-      aria-input-field-name: 'off'
-      aria-meter-name: 'off'
-      aria-progressbar-name: 'off'
-      aria-required-attr: 'off'
-      aria-required-children: 'off'
-      aria-required-parent: 'off'
-      aria-roles: 'off'
-      aria-toggle-field-name: 'off'
-      aria-tooltip-name: 'off'
-      aria-treeitem-name: 'off'
-      aria-valid-attr: 'off'
-      aria-valid-attr-value: 'off'
-      button-name: 'off'
-      bypass: 'off'
-      canonical: 'off'
-      color-contrast: 'off'
-      content-width: 'off'
-      crawlable-anchors: 'off'
-      csp-xss: 'off'
-      font-display: 'off'
-      font-size: 'off'
-      maskable-icon: 'off'
-      heading-order: 'off'
-      hreflang: 'off'
-      html-has-lang: 'off'
-      html-lang-valid: 'off'
-      http-status-code: 'off'
-      image-alt: 'off'
-      input-image-alt: 'off'
-      is-crawlable: 'off'
-      label: 'off'
-      link-name: 'off'
-      link-text: 'off'
-      list: 'off'
-      listitem: 'off'
-      meta-description: 'off'
-      meta-refresh: 'off'
-      meta-viewport: 'off'
-      object-alt: 'off'
-      plugins: 'off'
-      robots-txt: 'off'
-      splash-screen: 'off'
-      tabindex: 'off'
-      tap-targets: 'off'
-      td-headers-attr: 'off'
-      th-has-data-cells: 'off'
-      themed-omnibox: 'off'
-      valid-lang: 'off'
-      video-caption: 'off'
-      viewport: 'off'

openmct.js

@@ -30,8 +30,53 @@ if (document.currentScript) {
     }
 }
 
+/**
+ * @typedef {object} BuildInfo
+ * @property {string} version
+ * @property {string} buildDate
+ * @property {string} revision
+ * @property {string} branch
+ */
+
+/**
+ * @typedef {object} OpenMCT
+ * @property {BuildInfo} buildInfo
+ * @property {*} selection
+ * @property {import('./src/api/time/TimeAPI').default} time
+ * @property {import('./src/api/composition/CompositionAPI').default} composition
+ * @property {*} objectViews
+ * @property {*} inspectorViews
+ * @property {*} propertyEditors
+ * @property {*} toolbars
+ * @property {*} types
+ * @property {import('./src/api/objects/ObjectAPI').default} objects
+ * @property {import('./src/api/telemetry/TelemetryAPI').default} telemetry
+ * @property {import('./src/api/indicators/IndicatorAPI').default} indicators
+ * @property {import('./src/api/user/UserAPI').default} user
+ * @property {import('./src/api/notifications/NotificationAPI').default} notifications
+ * @property {import('./src/api/Editor').default} editor
+ * @property {import('./src/api/overlays/OverlayAPI')} overlays
+ * @property {import('./src/api/menu/MenuAPI').default} menus
+ * @property {import('./src/api/actions/ActionsAPI').default} actions
+ * @property {import('./src/api/status/StatusAPI').default} status
+ * @property {*} priority
+ * @property {import('./src/ui/router/ApplicationRouter')} router
+ * @property {import('./src/api/faultmanagement/FaultManagementAPI').default} faults
+ * @property {import('./src/api/forms/FormsAPI').default} forms
+ * @property {import('./src/api/Branding').default} branding
+ * @property {import('./src/api/annotation/AnnotationAPI').default} annotation
+ * @property {{(plugin: OpenMCTPlugin) => void}} install
+ * @property {{() => string}} getAssetPath
+ * @property {{(domElement: HTMLElement, isHeadlessMode: boolean) => void}} start
+ * @property {{() => void}} startHeadless
+ * @property {{() => void}} destroy
+ * @property {OpenMCTPlugin[]} plugins
+ * @property {OpenMCTComponent[]} components
+ */
+
 const MCT = require('./src/MCT');
 
+/** @type {OpenMCT} */
 const openmct = new MCT();
 
 module.exports = openmct;

package.json

@@ -1,40 +1,35 @@
 {
   "name": "openmct",
-  "version": "2.1.1-SNAPSHOT",
+  "version": "2.1.4-SNAPSHOT",
   "description": "The Open MCT core platform",
   "devDependencies": {
     "@babel/eslint-parser": "7.18.9",
-    "@braintree/sanitize-url": "6.0.0",
-    "@percy/cli": "1.10.3",
+    "@braintree/sanitize-url": "6.0.2",
+    "@percy/cli": "1.16.0",
     "@percy/playwright": "1.0.4",
     "@playwright/test": "1.25.2",
-    "@types/eventemitter3": "^1.0.0",
-    "@types/jasmine": "^4.0.1",
-    "@types/karma": "^6.3.2",
-    "@types/lodash": "^4.14.178",
-    "@types/mocha": "^9.1.0",
-    "babel-loader": "8.2.5",
+    "@types/jasmine": "4.3.0",
+    "@types/lodash": "4.14.189",
+    "babel-loader": "9.0.0",
     "babel-plugin-istanbul": "6.1.1",
+    "codecov": "3.8.3",
     "comma-separated-values": "3.6.4",
-    "codecov":"3.8.3",
     "copy-webpack-plugin": "11.0.0",
-    "cross-env": "7.0.3",
     "css-loader": "6.7.1",
     "d3-axis": "3.0.0",
     "d3-scale": "3.3.0",
     "d3-selection": "3.0.0",
-    "eslint": "8.23.1",
+    "eslint": "8.27.0",
     "eslint-plugin-compat": "4.0.2",
     "eslint-plugin-playwright": "0.11.2",
-    "eslint-plugin-vue": "9.3.0",
+    "eslint-plugin-vue": "9.7.0",
     "eslint-plugin-you-dont-need-lodash-underscore": "6.12.0",
     "eventemitter3": "1.2.0",
-    "express": "4.13.1",
     "file-saver": "2.0.5",
     "git-rev-sync": "3.0.2",
     "html2canvas": "1.4.1",
     "imports-loader": "4.0.1",
-    "jasmine-core": "4.4.0",
+    "jasmine-core": "4.5.0",
     "karma": "6.3.20",
     "karma-chrome-launcher": "3.1.1",
     "karma-cli": "2.0.0",
@@ -50,42 +45,43 @@
     "mini-css-extract-plugin": "2.6.1",
     "moment": "2.29.4",
     "moment-duration-format": "2.3.2",
-    "moment-timezone": "0.5.37",
-    "nyc":"15.1.0",
+    "moment-timezone": "0.5.38",
+    "nyc": "15.1.0",
     "painterro": "1.2.78",
+    "playwright-core": "1.25.2",
     "plotly.js-basic-dist": "2.14.0",
     "plotly.js-gl2d-dist": "2.14.0",
     "printj": "1.3.1",
-    "request": "2.88.2",
     "resolve-url-loader": "5.0.0",
-    "sass": "1.55.0",
+    "sass": "1.56.1",
     "sass-loader": "13.0.2",
-    "sinon": "14.0.0",
+    "sinon": "14.0.1",
     "style-loader": "^3.3.1",
+    "typescript": "4.9.3",
     "uuid": "9.0.0",
     "vue": "2.6.14",
     "vue-eslint-parser": "9.1.0",
     "vue-loader": "15.9.8",
     "vue-template-compiler": "2.6.14",
     "webpack": "5.74.0",
-    "webpack-cli": "4.10.0",
-    "webpack-dev-middleware": "5.3.3",
-    "webpack-hot-middleware": "2.25.2",
+    "webpack-cli": "5.0.0",
+    "webpack-dev-server": "4.11.1",
     "webpack-merge": "5.8.0"
   },
   "scripts": {
     "clean": "rm -rf ./dist ./node_modules ./package-lock.json",
     "clean-test-lint": "npm run clean; npm install; npm run test; npm run lint",
-    "start": "node app.js",
+    "start": "npx webpack serve --config ./webpack.dev.js",
+    "start:coverage": "npx webpack serve --config ./webpack.coverage.js",
     "lint": "eslint example src e2e --ext .js,.vue openmct.js --max-warnings=0",
     "lint:fix": "eslint example src e2e --ext .js,.vue openmct.js --fix",
-    "build:prod": "cross-env webpack --config webpack.prod.js",
+    "build:prod": "webpack --config webpack.prod.js",
     "build:dev": "webpack --config webpack.dev.js",
     "build:coverage": "webpack --config webpack.coverage.js",
     "build:watch": "webpack --config webpack.dev.js --watch",
     "info": "npx envinfo --system --browsers --npmPackages --binaries --languages --markdown",
-    "test": "cross-env NODE_ENV=test NODE_OPTIONS=\"--max_old_space_size=4096\" karma start --single-run",
-    "test:debug": "cross-env NODE_ENV=debug karma start --no-single-run",
+    "test": "karma start",
+    "test:debug": "KARMA_DEBUG=true karma start",
     "test:e2e": "npx playwright test",
     "test:e2e:couchdb": "npx playwright test --config=e2e/playwright-ci.config.js --project=chrome --grep @couchdb",
     "test:e2e:stable": "npx playwright test --config=e2e/playwright-ci.config.js --project=chrome --grep-invert \"@unstable|@couchdb\"",
@@ -95,14 +91,13 @@
     "test:e2e:visual": "percy exec --config ./e2e/.percy.yml -- npx playwright test --config=e2e/playwright-visual.config.js --grep-invert @unstable",
     "test:e2e:full": "npx playwright test --config=e2e/playwright-ci.config.js --grep-invert @couchdb",
     "test:perf": "npx playwright test --config=e2e/playwright-performance.config.js",
-    "test:watch": "cross-env NODE_ENV=test NODE_OPTIONS=\"--max_old_space_size=4096\" karma start --no-single-run",
     "update-about-dialog-copyright": "perl -pi -e 's/20\\d\\d\\-202\\d/2014\\-2022/gm' ./src/ui/layout/AboutDialog.vue",
     "update-copyright-date": "npm run update-about-dialog-copyright && grep -lr --null --include=*.{js,scss,vue,ts,sh,html,md,frag} 'Copyright (c) 20' . | xargs -r0 perl -pi -e 's/Copyright\\s\\(c\\)\\s20\\d\\d\\-20\\d\\d/Copyright \\(c\\)\\ 2014\\-2022/gm'",
-    "cov:e2e:report":"nyc report --reporter=lcovonly --report-dir=./coverage/e2e",
-    "cov:e2e:full:publish":"codecov --disable=gcov -f ./coverage/e2e/lcov.info -F e2e-full",
-    "cov:e2e:stable:publish":"codecov --disable=gcov -f ./coverage/e2e/lcov.info -F e2e-stable",
-    "cov:unit:publish":"codecov --disable=gcov -f ./coverage/unit/lcov.info -F unit",
-    "prepare": "npm run build:prod"
+    "cov:e2e:report": "nyc report --reporter=lcovonly --report-dir=./coverage/e2e",
+    "cov:e2e:full:publish": "codecov --disable=gcov -f ./coverage/e2e/lcov.info -F e2e-full",
+    "cov:e2e:stable:publish": "codecov --disable=gcov -f ./coverage/e2e/lcov.info -F e2e-stable",
+    "cov:unit:publish": "codecov --disable=gcov -f ./coverage/unit/lcov.info -F unit",
+    "prepare": "npm run build:prod && npx tsc"
   },
   "repository": {
     "type": "git",
@@ -111,9 +106,6 @@
   "engines": {
     "node": ">=14.19.1"
   },
-  "overrides": {
-    "core-js": "3.21.1"
-  },
   "browserslist": [
     "Firefox ESR",
     "not IE 11",
@@ -122,6 +114,5 @@
     "ios_saf > 15"
   ],
   "author": "",
-  "license": "Apache-2.0",
-  "private": true
+  "license": "Apache-2.0"
 }

src/MCT.js

@@ -19,7 +19,7 @@
  * this source code distribution or the Licensing information page available
  * at runtime from the About dialog for additional information.
  *****************************************************************************/
-
+/* eslint-disable no-undef */
 define([
     'EventEmitter',
     './api/api',
@@ -81,13 +81,11 @@ define([
     /**
      * The Open MCT application. This may be configured by installing plugins
      * or registering extensions before the application is started.
-     * @class MCT
+     * @constructor
      * @memberof module:openmct
-     * @augments {EventEmitter}
      */
     function MCT() {
         EventEmitter.call(this);
-        /* eslint-disable no-undef */
         this.buildInfo = {
             version: __OPENMCT_VERSION__,
             buildDate: __OPENMCT_BUILD_DATE__,
@@ -101,7 +99,7 @@ define([
             * Tracks current selection state of the application.
             * @private
             */
-            ['selection', () => new Selection(this)],
+            ['selection', () => new Selection.default(this)],
 
             /**
              * MCT's time conductor, which may be used to synchronize view contents
@@ -125,7 +123,7 @@ define([
              * @memberof module:openmct.MCT#
              * @name composition
              */
-            ['composition', () => new api.CompositionAPI(this)],
+            ['composition', () => new api.CompositionAPI.default(this)],
 
             /**
              * Registry for views of domain objects which should appear in the

src/api/Branding.js

@@ -23,8 +23,7 @@
 let brandingOptions = {};
 
 /**
- * @typedef {Object} BrandingOptions
- * @memberOf openmct/branding
+ * @typedef {object} BrandingOptions
  * @property {string} smallLogoImage URL to the image to use as the applications logo.
  * This logo will appear on every screen and when clicked will launch the about dialog.
  * @property {string} aboutHtml Custom content for the about screen. When defined the

src/api/Editor.js

@@ -56,18 +56,12 @@ export default class Editor extends EventEmitter {
      * Save any unsaved changes from this editing session. This will
      * end the current transaction.
      */
-    save() {
+    async save() {
         const transaction = this.openmct.objects.getActiveTransaction();
-
-        return transaction.commit()
-            .then(() => {
-                this.editing = false;
-                this.emit('isEditing', false);
-            }).catch(error => {
-                throw error;
-            }).finally(() => {
-                this.openmct.objects.endTransaction();
-            });
+        await transaction.commit();
+        this.editing = false;
+        this.emit('isEditing', false);
+        this.openmct.objects.endTransaction();
     }
 
     /**

src/api/EditorSpec.js

@@ -0,0 +1,80 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2022, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+import {
+    createOpenMct, resetApplicationState
+} from '../utils/testing';
+
+describe('The Editor API', () => {
+    let openmct;
+
+    beforeEach((done) => {
+        openmct = createOpenMct();
+        openmct.on('start', done);
+
+        spyOn(openmct.objects, 'endTransaction');
+
+        openmct.startHeadless();
+    });
+
+    afterEach(() => {
+        return resetApplicationState(openmct);
+    });
+
+    it('opens a transaction on edit', () => {
+        expect(
+            openmct.objects.isTransactionActive()
+        ).toBeFalse();
+        openmct.editor.edit();
+        expect(
+            openmct.objects.isTransactionActive()
+        ).toBeTrue();
+    });
+
+    it('closes an open transaction on successful save', async () => {
+        spyOn(openmct.objects, 'getActiveTransaction')
+            .and.returnValue({
+                commit: () => Promise.resolve(true)
+            });
+
+        openmct.editor.edit();
+        await openmct.editor.save();
+
+        expect(
+            openmct.objects.endTransaction
+        ).toHaveBeenCalled();
+    });
+
+    it('does not close an open transaction on failed save', async () => {
+        spyOn(openmct.objects, 'getActiveTransaction')
+            .and.returnValue({
+                commit: () => Promise.reject()
+            });
+
+        openmct.editor.edit();
+        await openmct.editor.save().catch(() => {});
+
+        expect(
+            openmct.objects.endTransaction
+        ).not.toHaveBeenCalled();
+    });
+});

src/api/annotation/AnnotationAPI.js

@@ -22,6 +22,7 @@
 
 import { v4 as uuid } from 'uuid';
 import EventEmitter from 'EventEmitter';
+import _ from 'lodash';
 
 /**
  * @readonly
@@ -42,19 +43,28 @@ const ANNOTATION_TYPES = Object.freeze({
 
 const ANNOTATION_TYPE = 'annotation';
 
+const ANNOTATION_LAST_CREATED = 'annotationLastCreated';
+
 /**
  * @typedef {Object} Tag
  * @property {String} key a unique identifier for the tag
  * @property {String} backgroundColor eg. "#cc0000"
  * @property {String} foregroundColor eg. "#ffffff"
  */
+
 export default class AnnotationAPI extends EventEmitter {
+
+    /**
+     * @param {OpenMCT} openmct
+     */
     constructor(openmct) {
         super();
         this.openmct = openmct;
         this.availableTags = {};
 
         this.ANNOTATION_TYPES = ANNOTATION_TYPES;
+        this.ANNOTATION_TYPE = ANNOTATION_TYPE;
+        this.ANNOTATION_LAST_CREATED = ANNOTATION_LAST_CREATED;
 
         this.openmct.types.addType(ANNOTATION_TYPE, {
             name: 'Annotation',
@@ -63,6 +73,7 @@ export default class AnnotationAPI extends EventEmitter {
             cssClass: 'icon-notebook',
             initialize: function (domainObject) {
                 domainObject.targets = domainObject.targets || {};
+                domainObject._deleted = domainObject._deleted || false;
                 domainObject.originalContextPath = domainObject.originalContextPath || '';
                 domainObject.tags = domainObject.tags || [];
                 domainObject.contentText = domainObject.contentText || '';
@@ -112,6 +123,7 @@ export default class AnnotationAPI extends EventEmitter {
                 namespace
             },
             tags,
+            _deleted: false,
             annotationType,
             contentText,
             originalContextPath
@@ -127,6 +139,7 @@ export default class AnnotationAPI extends EventEmitter {
         const success = await this.openmct.objects.save(createdObject);
         if (success) {
             this.emit('annotationCreated', createdObject);
+            this.#updateAnnotationModified(domainObject);
 
             return createdObject;
         } else {
@@ -134,14 +147,32 @@ export default class AnnotationAPI extends EventEmitter {
         }
     }
 
+    #updateAnnotationModified(domainObject) {
+        this.openmct.objects.mutate(domainObject, this.ANNOTATION_LAST_CREATED, Date.now());
+    }
+
+    /**
+    * @method defineTag
+    * @param {String} key a unique identifier for the tag
+    * @param {Tag} tagsDefinition the definition of the tag to add
+    */
     defineTag(tagKey, tagsDefinition) {
         this.availableTags[tagKey] = tagsDefinition;
     }
 
+    /**
+    * @method isAnnotation
+    * @param {import('../objects/ObjectAPI').DomainObject} domainObject domainObject the domainObject in question
+    * @returns {Boolean} Returns true if the domain object is an annotation
+    */
     isAnnotation(domainObject) {
         return domainObject && (domainObject.type === ANNOTATION_TYPE);
     }
 
+    /**
+    * @method getAvailableTags
+    * @returns {Tag[]} Returns an array of the available tags that have been loaded
+    */
     getAvailableTags() {
         if (this.availableTags) {
             const rearrangedToArray = Object.keys(this.availableTags).map(tagKey => {
@@ -157,18 +188,26 @@ export default class AnnotationAPI extends EventEmitter {
         }
     }
 
-    async getAnnotation(query, searchType) {
-        let foundAnnotation = null;
+    /**
+    * @method getAnnotations
+    * @param {String} query - The keystring of the domain object to search for annotations for
+    * @returns {import('../objects/ObjectAPI').DomainObject[]} Returns an array of domain objects that match the search query
+    */
+    async getAnnotations(query) {
+        const searchResults = (await Promise.all(this.openmct.objects.search(query, null, this.openmct.objects.SEARCH_TYPES.ANNOTATIONS))).flat();
 
-        const searchResults = (await Promise.all(this.openmct.objects.search(query, null, searchType))).flat();
-        if (searchResults) {
-            foundAnnotation = searchResults[0];
-        }
-
-        return foundAnnotation;
+        return searchResults;
     }
 
-    async addAnnotationTag(existingAnnotation, targetDomainObject, targetSpecificDetails, annotationType, tag) {
+    /**
+    * @method addSingleAnnotationTag
+    * @param {import('../objects/ObjectAPI').DomainObject=} existingAnnotation - An optional annotation to add the tag to. If not specified, we will create an annotation.
+    * @param {import('../objects/ObjectAPI').DomainObject} targetDomainObject - The domain object the annotation will point to.
+    * @param {Object=} targetSpecificDetails - Optional object to add to the target object. E.g., for notebooks this would be an entryID
+    * @param {AnnotationType} annotationType - The type of annotation this is for.
+    * @returns {import('../objects/ObjectAPI').DomainObject[]} Returns the annotation that was either created or passed as an existingAnnotation
+    */
+    async addSingleAnnotationTag(existingAnnotation, targetDomainObject, targetSpecificDetails, annotationType, tag) {
         if (!existingAnnotation) {
             const targets = {};
             const targetKeyString = this.openmct.objects.makeKeyString(targetDomainObject.identifier);
@@ -186,27 +225,44 @@ export default class AnnotationAPI extends EventEmitter {
 
             return newAnnotation;
         } else {
-            const tagArray = [tag, ...existingAnnotation.tags];
-            this.openmct.objects.mutate(existingAnnotation, 'tags', tagArray);
+            if (!existingAnnotation.tags.includes(tag)) {
+                throw new Error(`Existing annotation did not contain tag ${tag}`);
+            }
+
+            if (existingAnnotation._deleted) {
+                this.unDeleteAnnotation(existingAnnotation);
+            }
 
             return existingAnnotation;
         }
     }
 
-    removeAnnotationTag(existingAnnotation, tagToRemove) {
-        if (existingAnnotation && existingAnnotation.tags.includes(tagToRemove)) {
-            const cleanedArray = existingAnnotation.tags.filter(extantTag => extantTag !== tagToRemove);
-            this.openmct.objects.mutate(existingAnnotation, 'tags', cleanedArray);
-        } else {
-            throw new Error(`Asked to remove tag (${tagToRemove}) that doesn't exist`, existingAnnotation);
+    /**
+    * @method deleteAnnotations
+    * @param {import('../objects/ObjectAPI').DomainObject[]} existingAnnotation - An array of annotations to delete (set _deleted to true)
+    */
+    deleteAnnotations(annotations) {
+        if (!annotations) {
+            throw new Error('Asked to delete null annotations! 🙅‍♂️');
         }
+
+        annotations.forEach(annotation => {
+            if (!annotation._deleted) {
+                this.openmct.objects.mutate(annotation, '_deleted', true);
+            }
+        });
     }
 
-    removeAnnotationTags(existingAnnotation) {
-        // just removes tags on the annotation as we can't really delete objects
-        if (existingAnnotation && existingAnnotation.tags) {
-            this.openmct.objects.mutate(existingAnnotation, 'tags', []);
+    /**
+    * @method deleteAnnotations
+    * @param {import('../objects/ObjectAPI').DomainObject} existingAnnotation - An annotations to undelete (set _deleted to false)
+    */
+    unDeleteAnnotation(annotation) {
+        if (!annotation) {
+            throw new Error('Asked to undelete null annotation! 🙅‍♂️');
         }
+
+        this.openmct.objects.mutate(annotation, '_deleted', false);
     }
 
     #getMatchingTags(query) {
@@ -266,16 +322,40 @@ export default class AnnotationAPI extends EventEmitter {
         return modelAddedToResults;
     }
 
+    #combineSameTargets(results) {
+        const combinedResults = [];
+        results.forEach(currentAnnotation => {
+            const existingAnnotation = combinedResults.find((annotationToFind) => {
+                return _.isEqual(currentAnnotation.targets, annotationToFind.targets);
+            });
+            if (!existingAnnotation) {
+                combinedResults.push(currentAnnotation);
+            } else {
+                existingAnnotation.tags.push(...currentAnnotation.tags);
+            }
+        });
+
+        return combinedResults;
+    }
+
     /**
     * @method searchForTags
     * @param {String} query A query to match against tags. E.g., "dr" will match the tags "drilling" and "driving"
-    * @param {Object} abortController An optional abort method to stop the query
+    * @param {Object} [abortController] An optional abort method to stop the query
     * @returns {Promise} returns a model of matching tags with their target domain objects attached
     */
     async searchForTags(query, abortController) {
         const matchingTagKeys = this.#getMatchingTags(query);
+        if (!matchingTagKeys.length) {
+            return [];
+        }
+
         const searchResults = (await Promise.all(this.openmct.objects.search(matchingTagKeys, abortController, this.openmct.objects.SEARCH_TYPES.TAGS))).flat();
-        const appliedTagSearchResults = this.#addTagMetaInformationToResults(searchResults, matchingTagKeys);
+        const filteredDeletedResults = searchResults.filter((result) => {
+            return !(result._deleted);
+        });
+        const combinedSameTargets = this.#combineSameTargets(filteredDeletedResults);
+        const appliedTagSearchResults = this.#addTagMetaInformationToResults(combinedSameTargets, matchingTagKeys);
         const appliedTargetsModels = await this.#addTargetModelsToResults(appliedTagSearchResults);
         const resultsWithValidPath = appliedTargetsModels.filter(result => {
             return this.openmct.objects.isReachable(result.targetModels?.[0]?.originalPath);

src/api/annotation/AnnotationAPISpec.js

@@ -94,7 +94,6 @@ describe("The Annotation API", () => {
         openmct.startHeadless();
     });
     afterEach(async () => {
-        openmct.objects.providers = {};
         await resetApplicationState(openmct);
     });
     it("is defined", () => {
@@ -126,34 +125,44 @@ describe("The Annotation API", () => {
 
     describe("Tagging", () => {
         it("can create a tag", async () => {
-            const annotationObject = await openmct.annotation.addAnnotationTag(null, mockDomainObject, {entryId: 'foo'}, openmct.annotation.ANNOTATION_TYPES.NOTEBOOK, 'aWonderfulTag');
+            const annotationObject = await openmct.annotation.addSingleAnnotationTag(null, mockDomainObject, {entryId: 'foo'}, openmct.annotation.ANNOTATION_TYPES.NOTEBOOK, 'aWonderfulTag');
             expect(annotationObject).toBeDefined();
             expect(annotationObject.type).toEqual('annotation');
             expect(annotationObject.tags).toContain('aWonderfulTag');
         });
         it("can delete a tag", async () => {
-            const originalAnnotationObject = await openmct.annotation.addAnnotationTag(null, mockDomainObject, {entryId: 'foo'}, openmct.annotation.ANNOTATION_TYPES.NOTEBOOK, 'aWonderfulTag');
-            const annotationObject = await openmct.annotation.addAnnotationTag(originalAnnotationObject, mockDomainObject, {entryId: 'foo'}, openmct.annotation.ANNOTATION_TYPES.NOTEBOOK, 'anotherTagToRemove');
+            const annotationObject = await openmct.annotation.addSingleAnnotationTag(null, mockDomainObject, {entryId: 'foo'}, openmct.annotation.ANNOTATION_TYPES.NOTEBOOK, 'aWonderfulTag');
             expect(annotationObject).toBeDefined();
-            openmct.annotation.removeAnnotationTag(annotationObject, 'anotherTagToRemove');
-            expect(annotationObject.tags).toEqual(['aWonderfulTag']);
-            openmct.annotation.removeAnnotationTag(annotationObject, 'aWonderfulTag');
-            expect(annotationObject.tags).toEqual([]);
+            openmct.annotation.deleteAnnotations([annotationObject]);
+            expect(annotationObject._deleted).toBeTrue();
         });
         it("throws an error if deleting non-existent tag", async () => {
-            const annotationObject = await openmct.annotation.addAnnotationTag(null, mockDomainObject, {entryId: 'foo'}, openmct.annotation.ANNOTATION_TYPES.NOTEBOOK, 'aWonderfulTag');
+            const annotationObject = await openmct.annotation.addSingleAnnotationTag(null, mockDomainObject, {entryId: 'foo'}, openmct.annotation.ANNOTATION_TYPES.NOTEBOOK, 'aWonderfulTag');
             expect(annotationObject).toBeDefined();
             expect(() => {
                 openmct.annotation.removeAnnotationTag(annotationObject, 'ThisTagShouldNotExist');
             }).toThrow();
         });
         it("can remove all tags", async () => {
-            const annotationObject = await openmct.annotation.addAnnotationTag(null, mockDomainObject, {entryId: 'foo'}, openmct.annotation.ANNOTATION_TYPES.NOTEBOOK, 'aWonderfulTag');
+            const annotationObject = await openmct.annotation.addSingleAnnotationTag(null, mockDomainObject, {entryId: 'foo'}, openmct.annotation.ANNOTATION_TYPES.NOTEBOOK, 'aWonderfulTag');
             expect(annotationObject).toBeDefined();
             expect(() => {
-                openmct.annotation.removeAnnotationTags(annotationObject);
+                openmct.annotation.deleteAnnotations([annotationObject]);
             }).not.toThrow();
-            expect(annotationObject.tags).toEqual([]);
+            expect(annotationObject._deleted).toBeTrue();
+        });
+        it("can add/delete/add a tag", async () => {
+            let annotationObject = await openmct.annotation.addSingleAnnotationTag(null, mockDomainObject, {entryId: 'foo'}, openmct.annotation.ANNOTATION_TYPES.NOTEBOOK, 'aWonderfulTag');
+            expect(annotationObject).toBeDefined();
+            expect(annotationObject.type).toEqual('annotation');
+            expect(annotationObject.tags).toContain('aWonderfulTag');
+            openmct.annotation.deleteAnnotations([annotationObject]);
+            expect(annotationObject._deleted).toBeTrue();
+            annotationObject = await openmct.annotation.addSingleAnnotationTag(null, mockDomainObject, {entryId: 'foo'}, openmct.annotation.ANNOTATION_TYPES.NOTEBOOK, 'aWonderfulTag');
+            expect(annotationObject).toBeDefined();
+            expect(annotationObject.type).toEqual('annotation');
+            expect(annotationObject.tags).toContain('aWonderfulTag');
+            expect(annotationObject._deleted).toBeFalse();
         });
     });
 
@@ -175,16 +184,10 @@ describe("The Annotation API", () => {
             expect(results).toBeDefined();
             expect(results.length).toEqual(1);
         });
-        it("can get notebook annotations", async () => {
-            const targetKeyString = openmct.objects.makeKeyString(mockDomainObject.identifier);
-            const query = {
-                targetKeyString,
-                entryId: 'fooBarEntry'
-            };
-
-            const results = await openmct.annotation.getAnnotation(query, openmct.objects.SEARCH_TYPES.NOTEBOOK_ANNOTATIONS);
+        it("returns no tags for empty search", async () => {
+            const results = await openmct.annotation.searchForTags('q');
             expect(results).toBeDefined();
-            expect(results.tags.length).toEqual(2);
+            expect(results.length).toEqual(0);
         });
     });
 });

src/api/api.js

@@ -37,7 +37,9 @@ define([
     './types/TypeRegistry',
     './user/UserAPI',
     './annotation/AnnotationAPI'
-], function (
+],
+
+function (
     ActionsAPI,
     CompositionAPI,
     EditorAPI,

src/api/composition/CompositionAPI.js

@@ -20,34 +20,41 @@
  * at runtime from the About dialog for additional information.
  *****************************************************************************/
 
-define([
-    'lodash',
-    'EventEmitter',
-    './DefaultCompositionProvider',
-    './CompositionCollection'
-], function (
-    _,
-    EventEmitter,
-    DefaultCompositionProvider,
-    CompositionCollection
-) {
+import DefaultCompositionProvider from './DefaultCompositionProvider';
+import CompositionCollection from './CompositionCollection';
+
+/**
+ * @typedef {import('./CompositionProvider').default} CompositionProvider
+ */
+
+/**
+ * @typedef {import('../objects/ObjectAPI').DomainObject} DomainObject
+ */
+
+/**
+ * @typedef {import('../../../openmct').OpenMCT} OpenMCT
+ */
+
+/**
+ * An interface for interacting with the composition of domain objects.
+ * The composition of a domain object is the list of other domain objects
+ * it "contains" (for instance, that should be displayed beneath it
+ * in the tree.)
+ * @constructor
+ */
+export default class CompositionAPI {
     /**
-     * An interface for interacting with the composition of domain objects.
-     * The composition of a domain object is the list of other domain objects
-     * it "contains" (for instance, that should be displayed beneath it
-     * in the tree.)
-     *
-     * @interface CompositionAPI
-     * @returns {module:openmct.CompositionCollection}
-     * @memberof module:openmct
+     * @param {OpenMCT} publicAPI
      */
-    function CompositionAPI(publicAPI) {
+    constructor(publicAPI) {
+        /** @type {CompositionProvider[]} */
         this.registry = [];
+        /** @type {CompositionPolicy[]} */
         this.policies = [];
         this.addProvider(new DefaultCompositionProvider(publicAPI, this));
+        /** @type {OpenMCT} */
         this.publicAPI = publicAPI;
     }
-
     /**
      * Add a composition provider.
      *
@@ -55,21 +62,19 @@ define([
      * behavior for certain domain objects.
      *
      * @method addProvider
-     * @param {module:openmct.CompositionProvider} provider the provider to add
-     * @memberof module:openmct.CompositionAPI#
+     * @param {CompositionProvider} provider the provider to add
      */
-    CompositionAPI.prototype.addProvider = function (provider) {
+    addProvider(provider) {
         this.registry.unshift(provider);
-    };
-
+    }
     /**
      * Retrieve the composition (if any) of this domain object.
      *
      * @method get
-     * @returns {module:openmct.CompositionCollection}
-     * @memberof module:openmct.CompositionAPI#
+     * @param {DomainObject} domainObject
+     * @returns {CompositionCollection}
      */
-    CompositionAPI.prototype.get = function (domainObject) {
+    get(domainObject) {
         const provider = this.registry.find(p => {
             return p.appliesTo(domainObject);
         });
@@ -79,8 +84,7 @@ define([
         }
 
         return new CompositionCollection(domainObject, provider, this.publicAPI);
-    };
-
+    }
     /**
      * A composition policy is a function which either allows or disallows
      * placing one object in another's composition.
@@ -90,52 +94,51 @@ define([
      * generally be written to return true in the default case.
      *
      * @callback CompositionPolicy
-     * @memberof module:openmct.CompositionAPI~
-     * @param {module:openmct.DomainObject} containingObject the object which
+     * @param {DomainObject} containingObject the object which
      *        would act as a container
-     * @param {module:openmct.DomainObject} containedObject the object which
+     * @param {DomainObject} containedObject the object which
      *        would be contained
      * @returns {boolean} false if this composition should be disallowed
      */
-
     /**
      * Add a composition policy. Composition policies may disallow domain
      * objects from containing other domain objects.
      *
      * @method addPolicy
-     * @param {module:openmct.CompositionAPI~CompositionPolicy} policy
+     * @param {CompositionPolicy} policy
      *        the policy to add
-     * @memberof module:openmct.CompositionAPI#
      */
-    CompositionAPI.prototype.addPolicy = function (policy) {
+    addPolicy(policy) {
         this.policies.push(policy);
-    };
-
+    }
     /**
      * Check whether or not a domain object is allowed to contain another
      * domain object.
      *
      * @private
      * @method checkPolicy
-     * @param {module:openmct.DomainObject} containingObject the object which
+     * @param {DomainObject} container the object which
      *        would act as a container
-     * @param {module:openmct.DomainObject} containedObject the object which
+     * @param {DomainObject} containee the object which
      *        would be contained
      * @returns {boolean} false if this composition should be disallowed
-
-     * @param {module:openmct.CompositionAPI~CompositionPolicy} policy
+     * @param {CompositionPolicy} policy
      *        the policy to add
-     * @memberof module:openmct.CompositionAPI#
      */
-    CompositionAPI.prototype.checkPolicy = function (container, containee) {
+    checkPolicy(container, containee) {
         return this.policies.every(function (policy) {
             return policy(container, containee);
         });
-    };
+    }
 
-    CompositionAPI.prototype.supportsComposition = function (domainObject) {
+    /**
+     * Check whether or not a domainObject supports composition
+     *
+     * @param {DomainObject} domainObject
+     * @returns {boolean} true if the domainObject supports composition
+     */
+    supportsComposition(domainObject) {
         return this.get(domainObject) !== undefined;
-    };
+    }
+}
 
-    return CompositionAPI;
-});

src/api/composition/CompositionAPISpec.js

@@ -1,325 +1,319 @@
-define([
-    './CompositionAPI',
-    './CompositionCollection'
-], function (
-    CompositionAPI,
-    CompositionCollection
-) {
+import CompositionAPI from './CompositionAPI';
+import CompositionCollection from './CompositionCollection';
 
-    describe('The Composition API', function () {
-        let publicAPI;
-        let compositionAPI;
-        let topicService;
-        let mutationTopic;
+describe('The Composition API', function () {
+    let publicAPI;
+    let compositionAPI;
+    let topicService;
+    let mutationTopic;
+
+    beforeEach(function () {
+
+        mutationTopic = jasmine.createSpyObj('mutationTopic', [
+            'listen'
+        ]);
+        topicService = jasmine.createSpy('topicService');
+        topicService.and.returnValue(mutationTopic);
+        publicAPI = {};
+        publicAPI.objects = jasmine.createSpyObj('ObjectAPI', [
+            'get',
+            'mutate',
+            'observe',
+            'areIdsEqual'
+        ]);
+
+        publicAPI.objects.areIdsEqual.and.callFake(function (id1, id2) {
+            return id1.namespace === id2.namespace && id1.key === id2.key;
+        });
+
+        publicAPI.composition = jasmine.createSpyObj('CompositionAPI', [
+            'checkPolicy'
+        ]);
+        publicAPI.composition.checkPolicy.and.returnValue(true);
+
+        publicAPI.objects.eventEmitter = jasmine.createSpyObj('eventemitter', [
+            'on'
+        ]);
+        publicAPI.objects.get.and.callFake(function (identifier) {
+            return Promise.resolve({identifier: identifier});
+        });
+        publicAPI.$injector = jasmine.createSpyObj('$injector', [
+            'get'
+        ]);
+        publicAPI.$injector.get.and.returnValue(topicService);
+        compositionAPI = new CompositionAPI(publicAPI);
+    });
+
+    it('returns falsy if an object does not support composition', function () {
+        expect(compositionAPI.get({})).toBeFalsy();
+    });
+
+    describe('default composition', function () {
+        let domainObject;
+        let composition;
 
         beforeEach(function () {
-
-            mutationTopic = jasmine.createSpyObj('mutationTopic', [
-                'listen'
-            ]);
-            topicService = jasmine.createSpy('topicService');
-            topicService.and.returnValue(mutationTopic);
-            publicAPI = {};
-            publicAPI.objects = jasmine.createSpyObj('ObjectAPI', [
-                'get',
-                'mutate',
-                'observe',
-                'areIdsEqual'
-            ]);
-
-            publicAPI.objects.areIdsEqual.and.callFake(function (id1, id2) {
-                return id1.namespace === id2.namespace && id1.key === id2.key;
-            });
-
-            publicAPI.composition = jasmine.createSpyObj('CompositionAPI', [
-                'checkPolicy'
-            ]);
-            publicAPI.composition.checkPolicy.and.returnValue(true);
-
-            publicAPI.objects.eventEmitter = jasmine.createSpyObj('eventemitter', [
-                'on'
-            ]);
-            publicAPI.objects.get.and.callFake(function (identifier) {
-                return Promise.resolve({identifier: identifier});
-            });
-            publicAPI.$injector = jasmine.createSpyObj('$injector', [
-                'get'
-            ]);
-            publicAPI.$injector.get.and.returnValue(topicService);
-            compositionAPI = new CompositionAPI(publicAPI);
+            domainObject = {
+                name: 'test folder',
+                identifier: {
+                    namespace: 'test',
+                    key: '1'
+                },
+                composition: [
+                    {
+                        namespace: 'test',
+                        key: 'a'
+                    },
+                    {
+                        namespace: 'test',
+                        key: 'b'
+                    },
+                    {
+                        namespace: 'test',
+                        key: 'c'
+                    }
+                ]
+            };
+            composition = compositionAPI.get(domainObject);
         });
 
-        it('returns falsy if an object does not support composition', function () {
-            expect(compositionAPI.get({})).toBeFalsy();
+        it('returns composition collection', function () {
+            expect(composition).toBeDefined();
+            expect(composition).toEqual(jasmine.any(CompositionCollection));
         });
 
-        describe('default composition', function () {
-            let domainObject;
-            let composition;
+        it('correctly reflects composability', function () {
+            expect(compositionAPI.supportsComposition(domainObject)).toBe(true);
+            delete domainObject.composition;
+            expect(compositionAPI.supportsComposition(domainObject)).toBe(false);
+        });
 
-            beforeEach(function () {
-                domainObject = {
-                    name: 'test folder',
+        it('loads composition from domain object', function () {
+            const listener = jasmine.createSpy('addListener');
+            composition.on('add', listener);
+
+            return composition.load().then(function () {
+                expect(listener.calls.count()).toBe(3);
+                expect(listener).toHaveBeenCalledWith({
                     identifier: {
                         namespace: 'test',
-                        key: '1'
-                    },
-                    composition: [
-                        {
-                            namespace: 'test',
-                            key: 'a'
-                        },
-                        {
-                            namespace: 'test',
-                            key: 'b'
-                        },
-                        {
-                            namespace: 'test',
-                            key: 'c'
-                        }
-                    ]
-                };
-                composition = compositionAPI.get(domainObject);
-            });
-
-            it('returns composition collection', function () {
-                expect(composition).toBeDefined();
-                expect(composition).toEqual(jasmine.any(CompositionCollection));
-            });
-
-            it('correctly reflects composability', function () {
-                expect(compositionAPI.supportsComposition(domainObject)).toBe(true);
-                delete domainObject.composition;
-                expect(compositionAPI.supportsComposition(domainObject)).toBe(false);
-            });
-
-            it('loads composition from domain object', function () {
-                const listener = jasmine.createSpy('addListener');
-                composition.on('add', listener);
-
-                return composition.load().then(function () {
-                    expect(listener.calls.count()).toBe(3);
-                    expect(listener).toHaveBeenCalledWith({
-                        identifier: {
-                            namespace: 'test',
-                            key: 'a'
-                        }
-                    });
+                        key: 'a'
+                    }
                 });
             });
-            describe('supports reordering of composition', function () {
-                let listener;
-                beforeEach(function () {
-                    listener = jasmine.createSpy('reorderListener');
-                    composition.on('reorder', listener);
+        });
+        describe('supports reordering of composition', function () {
+            let listener;
+            beforeEach(function () {
+                listener = jasmine.createSpy('reorderListener');
+                composition.on('reorder', listener);
 
-                    return composition.load();
-                });
-                it('', function () {
-                    composition.reorder(1, 0);
-                    let newComposition =
+                return composition.load();
+            });
+            it('', function () {
+                composition.reorder(1, 0);
+                let newComposition =
                         publicAPI.objects.mutate.calls.mostRecent().args[2];
-                    let reorderPlan = listener.calls.mostRecent().args[0][0];
+                let reorderPlan = listener.calls.mostRecent().args[0][0];
 
-                    expect(reorderPlan.oldIndex).toBe(1);
-                    expect(reorderPlan.newIndex).toBe(0);
-                    expect(newComposition[0].key).toEqual('b');
-                    expect(newComposition[1].key).toEqual('a');
-                    expect(newComposition[2].key).toEqual('c');
-                });
-                it('', function () {
-                    composition.reorder(0, 2);
-                    let newComposition =
+                expect(reorderPlan.oldIndex).toBe(1);
+                expect(reorderPlan.newIndex).toBe(0);
+                expect(newComposition[0].key).toEqual('b');
+                expect(newComposition[1].key).toEqual('a');
+                expect(newComposition[2].key).toEqual('c');
+            });
+            it('', function () {
+                composition.reorder(0, 2);
+                let newComposition =
                         publicAPI.objects.mutate.calls.mostRecent().args[2];
-                    let reorderPlan = listener.calls.mostRecent().args[0][0];
+                let reorderPlan = listener.calls.mostRecent().args[0][0];
 
-                    expect(reorderPlan.oldIndex).toBe(0);
-                    expect(reorderPlan.newIndex).toBe(2);
-                    expect(newComposition[0].key).toEqual('b');
-                    expect(newComposition[1].key).toEqual('c');
-                    expect(newComposition[2].key).toEqual('a');
+                expect(reorderPlan.oldIndex).toBe(0);
+                expect(reorderPlan.newIndex).toBe(2);
+                expect(newComposition[0].key).toEqual('b');
+                expect(newComposition[1].key).toEqual('c');
+                expect(newComposition[2].key).toEqual('a');
+            });
+        });
+        it('supports adding an object to composition', function () {
+            let addListener = jasmine.createSpy('addListener');
+            let mockChildObject = {
+                identifier: {
+                    key: 'mock-key',
+                    namespace: ''
+                }
+            };
+            composition.on('add', addListener);
+            composition.add(mockChildObject);
+
+            expect(domainObject.composition.length).toBe(4);
+            expect(domainObject.composition[3]).toEqual(mockChildObject.identifier);
+        });
+    });
+
+    describe('static custom composition', function () {
+        let customProvider;
+        let domainObject;
+        let composition;
+
+        beforeEach(function () {
+            // A simple custom provider, returns the same composition for
+            // all objects of a given type.
+            customProvider = {
+                appliesTo: function (object) {
+                    return object.type === 'custom-object-type';
+                },
+                load: function (object) {
+                    return Promise.resolve([
+                        {
+                            namespace: 'custom',
+                            key: 'thing'
+                        }
+                    ]);
+                },
+                add: jasmine.createSpy('add'),
+                remove: jasmine.createSpy('remove')
+            };
+            domainObject = {
+                identifier: {
+                    namespace: 'test',
+                    key: '1'
+                },
+                type: 'custom-object-type'
+            };
+            compositionAPI.addProvider(customProvider);
+            composition = compositionAPI.get(domainObject);
+        });
+
+        it('supports listening and loading', function () {
+            const addListener = jasmine.createSpy('addListener');
+            composition.on('add', addListener);
+
+            return composition.load().then(function (children) {
+                let listenObject;
+                const loadedObject = children[0];
+
+                expect(addListener).toHaveBeenCalled();
+
+                listenObject = addListener.calls.mostRecent().args[0];
+                expect(listenObject).toEqual(loadedObject);
+                expect(loadedObject).toEqual({
+                    identifier: {
+                        namespace: 'custom',
+                        key: 'thing'
+                    }
                 });
             });
-            it('supports adding an object to composition', function () {
-                let addListener = jasmine.createSpy('addListener');
-                let mockChildObject = {
+        });
+        describe('Calling add or remove', function () {
+            let mockChildObject;
+
+            beforeEach(function () {
+                mockChildObject = {
                     identifier: {
                         key: 'mock-key',
                         namespace: ''
                     }
                 };
-                composition.on('add', addListener);
                 composition.add(mockChildObject);
-
-                expect(domainObject.composition.length).toBe(4);
-                expect(domainObject.composition[3]).toEqual(mockChildObject.identifier);
-            });
-        });
-
-        describe('static custom composition', function () {
-            let customProvider;
-            let domainObject;
-            let composition;
-
-            beforeEach(function () {
-                // A simple custom provider, returns the same composition for
-                // all objects of a given type.
-                customProvider = {
-                    appliesTo: function (object) {
-                        return object.type === 'custom-object-type';
-                    },
-                    load: function (object) {
-                        return Promise.resolve([
-                            {
-                                namespace: 'custom',
-                                key: 'thing'
-                            }
-                        ]);
-                    },
-                    add: jasmine.createSpy('add'),
-                    remove: jasmine.createSpy('remove')
-                };
-                domainObject = {
-                    identifier: {
-                        namespace: 'test',
-                        key: '1'
-                    },
-                    type: 'custom-object-type'
-                };
-                compositionAPI.addProvider(customProvider);
-                composition = compositionAPI.get(domainObject);
             });
 
-            it('supports listening and loading', function () {
-                const addListener = jasmine.createSpy('addListener');
-                composition.on('add', addListener);
-
-                return composition.load().then(function (children) {
-                    let listenObject;
-                    const loadedObject = children[0];
-
-                    expect(addListener).toHaveBeenCalled();
-
-                    listenObject = addListener.calls.mostRecent().args[0];
-                    expect(listenObject).toEqual(loadedObject);
-                    expect(loadedObject).toEqual({
-                        identifier: {
-                            namespace: 'custom',
-                            key: 'thing'
-                        }
-                    });
-                });
-            });
-            describe('Calling add or remove', function () {
-                let mockChildObject;
-
-                beforeEach(function () {
-                    mockChildObject = {
-                        identifier: {
-                            key: 'mock-key',
-                            namespace: ''
-                        }
-                    };
-                    composition.add(mockChildObject);
-                });
-
-                it('calls add on the provider', function () {
-                    expect(customProvider.add).toHaveBeenCalledWith(domainObject, mockChildObject.identifier);
-                });
-
-                it('calls remove on the provider', function () {
-                    composition.remove(mockChildObject);
-                    expect(customProvider.remove).toHaveBeenCalledWith(domainObject, mockChildObject.identifier);
-                });
-            });
-        });
-
-        describe('dynamic custom composition', function () {
-            let customProvider;
-            let domainObject;
-            let composition;
-
-            beforeEach(function () {
-                // A dynamic provider, loads an empty composition and exposes
-                // listener functions.
-                customProvider = jasmine.createSpyObj('dynamicProvider', [
-                    'appliesTo',
-                    'load',
-                    'on',
-                    'off'
-                ]);
-
-                customProvider.appliesTo.and.returnValue('true');
-                customProvider.load.and.returnValue(Promise.resolve([]));
-
-                domainObject = {
-                    identifier: {
-                        namespace: 'test',
-                        key: '1'
-                    },
-                    type: 'custom-object-type'
-                };
-                compositionAPI.addProvider(customProvider);
-                composition = compositionAPI.get(domainObject);
+            it('calls add on the provider', function () {
+                expect(customProvider.add).toHaveBeenCalledWith(domainObject, mockChildObject.identifier);
             });
 
-            it('supports listening and loading', function () {
-                const addListener = jasmine.createSpy('addListener');
-                const removeListener = jasmine.createSpy('removeListener');
-                const addPromise = new Promise(function (resolve) {
-                    addListener.and.callFake(resolve);
-                });
-                const removePromise = new Promise(function (resolve) {
-                    removeListener.and.callFake(resolve);
-                });
-
-                composition.on('add', addListener);
-                composition.on('remove', removeListener);
-
-                expect(customProvider.on).toHaveBeenCalledWith(
-                    domainObject,
-                    'add',
-                    jasmine.any(Function),
-                    jasmine.any(CompositionCollection)
-                );
-                expect(customProvider.on).toHaveBeenCalledWith(
-                    domainObject,
-                    'remove',
-                    jasmine.any(Function),
-                    jasmine.any(CompositionCollection)
-                );
-                const add = customProvider.on.calls.all()[0].args[2];
-                const remove = customProvider.on.calls.all()[1].args[2];
-
-                return composition.load()
-                    .then(function () {
-                        expect(addListener).not.toHaveBeenCalled();
-                        expect(removeListener).not.toHaveBeenCalled();
-                        add({
-                            namespace: 'custom',
-                            key: 'thing'
-                        });
-
-                        return addPromise;
-                    }).then(function () {
-                        expect(addListener).toHaveBeenCalledWith({
-                            identifier: {
-                                namespace: 'custom',
-                                key: 'thing'
-                            }
-                        });
-                        remove(addListener.calls.mostRecent().args[0]);
-
-                        return removePromise;
-                    }).then(function () {
-                        expect(removeListener).toHaveBeenCalledWith({
-                            identifier: {
-                                namespace: 'custom',
-                                key: 'thing'
-                            }
-                        });
-                    });
+            it('calls remove on the provider', function () {
+                composition.remove(mockChildObject);
+                expect(customProvider.remove).toHaveBeenCalledWith(domainObject, mockChildObject.identifier);
             });
         });
     });
+
+    describe('dynamic custom composition', function () {
+        let customProvider;
+        let domainObject;
+        let composition;
+
+        beforeEach(function () {
+            // A dynamic provider, loads an empty composition and exposes
+            // listener functions.
+            customProvider = jasmine.createSpyObj('dynamicProvider', [
+                'appliesTo',
+                'load',
+                'on',
+                'off'
+            ]);
+
+            customProvider.appliesTo.and.returnValue('true');
+            customProvider.load.and.returnValue(Promise.resolve([]));
+
+            domainObject = {
+                identifier: {
+                    namespace: 'test',
+                    key: '1'
+                },
+                type: 'custom-object-type'
+            };
+            compositionAPI.addProvider(customProvider);
+            composition = compositionAPI.get(domainObject);
+        });
+
+        it('supports listening and loading', function () {
+            const addListener = jasmine.createSpy('addListener');
+            const removeListener = jasmine.createSpy('removeListener');
+            const addPromise = new Promise(function (resolve) {
+                addListener.and.callFake(resolve);
+            });
+            const removePromise = new Promise(function (resolve) {
+                removeListener.and.callFake(resolve);
+            });
+
+            composition.on('add', addListener);
+            composition.on('remove', removeListener);
+
+            expect(customProvider.on).toHaveBeenCalledWith(
+                domainObject,
+                'add',
+                jasmine.any(Function),
+                jasmine.any(CompositionCollection)
+            );
+            expect(customProvider.on).toHaveBeenCalledWith(
+                domainObject,
+                'remove',
+                jasmine.any(Function),
+                jasmine.any(CompositionCollection)
+            );
+            const add = customProvider.on.calls.all()[0].args[2];
+            const remove = customProvider.on.calls.all()[1].args[2];
+
+            return composition.load()
+                .then(function () {
+                    expect(addListener).not.toHaveBeenCalled();
+                    expect(removeListener).not.toHaveBeenCalled();
+                    add({
+                        namespace: 'custom',
+                        key: 'thing'
+                    });
+
+                    return addPromise;
+                }).then(function () {
+                    expect(addListener).toHaveBeenCalledWith({
+                        identifier: {
+                            namespace: 'custom',
+                            key: 'thing'
+                        }
+                    });
+                    remove(addListener.calls.mostRecent().args[0]);
+
+                    return removePromise;
+                }).then(function () {
+                    expect(removeListener).toHaveBeenCalledWith({
+                        identifier: {
+                            namespace: 'custom',
+                            key: 'thing'
+                        }
+                    });
+                });
+        });
+    });
 });

src/api/composition/CompositionCollection.js

@@ -20,75 +20,98 @@
  * at runtime from the About dialog for additional information.
  *****************************************************************************/
 
-define([
-    'lodash'
-], function (
-    _
-) {
+/**
+ * @typedef {import('../objects/ObjectAPI').DomainObject} DomainObject
+ */
+
+/**
+ * @typedef {import('./CompositionAPI').default} CompositionAPI
+ */
+
+/**
+ * @typedef {import('../../../openmct').OpenMCT} OpenMCT
+ */
+
+/**
+ * @typedef {object} ListenerMap
+ * @property {Array.<any>} add
+ * @property {Array.<any>} remove
+ * @property {Array.<any>} load
+ * @property {Array.<any>} reorder
+ */
+
+/**
+ * A CompositionCollection represents the list of domain objects contained
+ * by another domain object. It provides methods for loading this
+ * list asynchronously, modifying this list, and listening for changes to
+ * this list.
+ *
+ * Usage:
+ * ```javascript
+ *  var myViewComposition = MCT.composition.get(myViewObject);
+ *  myViewComposition.on('add', addObjectToView);
+ *  myViewComposition.on('remove', removeObjectFromView);
+ *  myViewComposition.load(); // will trigger `add` for all loaded objects.
+ *  ```
+ */
+export default class CompositionCollection {
+    domainObject;
+    #provider;
+    #publicAPI;
+    #listeners;
+    #mutables;
     /**
-     * A CompositionCollection represents the list of domain objects contained
-     * by another domain object. It provides methods for loading this
-     * list asynchronously, modifying this list, and listening for changes to
-     * this list.
-     *
-     * Usage:
-     * ```javascript
-     *  var myViewComposition = MCT.composition.get(myViewObject);
-     *  myViewComposition.on('add', addObjectToView);
-     *  myViewComposition.on('remove', removeObjectFromView);
-     *  myViewComposition.load(); // will trigger `add` for all loaded objects.
-     *  ```
-     *
-     * @interface CompositionCollection
-     * @param {module:openmct.DomainObject} domainObject the domain object
+     * @constructor
+     * @param {DomainObject} domainObject the domain object
      *        whose composition will be contained
-     * @param {module:openmct.CompositionProvider} provider the provider
+     * @param {import('./CompositionProvider').default} provider the provider
      *        to use to retrieve other domain objects
-     * @param {module:openmct.CompositionAPI} api the composition API, for
+     * @param {OpenMCT} publicAPI the composition API, for
      *        policy checks
-     * @memberof module:openmct
      */
-    function CompositionCollection(domainObject, provider, publicAPI) {
+    constructor(domainObject, provider, publicAPI) {
         this.domainObject = domainObject;
-        this.provider = provider;
-        this.publicAPI = publicAPI;
-        this.listeners = {
+        /** @type {import('./CompositionProvider').default} */
+        this.#provider = provider;
+        /** @type {OpenMCT} */
+        this.#publicAPI = publicAPI;
+        /** @type {ListenerMap} */
+        this.#listeners = {
             add: [],
             remove: [],
             load: [],
             reorder: []
         };
-        this.onProviderAdd = this.onProviderAdd.bind(this);
-        this.onProviderRemove = this.onProviderRemove.bind(this);
-        this.mutables = {};
+        this.onProviderAdd = this.#onProviderAdd.bind(this);
+        this.onProviderRemove = this.#onProviderRemove.bind(this);
+        this.#mutables = {};
 
         if (this.domainObject.isMutable) {
             this.returnMutables = true;
             let unobserve = this.domainObject.$on('$_destroy', () => {
-                Object.values(this.mutables).forEach(mutable => {
-                    this.publicAPI.objects.destroyMutable(mutable);
+                Object.values(this.#mutables).forEach(mutable => {
+                    this.#publicAPI.objects.destroyMutable(mutable);
                 });
                 unobserve();
             });
         }
     }
-
     /**
      * Listen for changes to this composition.  Supports 'add', 'remove', and
      * 'load' events.
      *
-     * @param event event to listen for, either 'add', 'remove' or 'load'.
-     * @param callback to trigger when event occurs.
-     * @param [context] context to use when invoking callback, optional.
+     * @param {string} event event to listen for, either 'add', 'remove' or 'load'.
+     * @param {(...args: any[]) => void} callback to trigger when event occurs.
+     * @param {any} [context] to use when invoking callback, optional.
      */
-    CompositionCollection.prototype.on = function (event, callback, context) {
-        if (!this.listeners[event]) {
+    on(event, callback, context) {
+        if (!this.#listeners[event]) {
             throw new Error('Event not supported by composition: ' + event);
         }
 
-        if (this.provider.on && this.provider.off) {
+        if (this.#provider.on && this.#provider.off) {
             if (event === 'add') {
-                this.provider.on(
+                this.#provider.on(
                     this.domainObject,
                     'add',
                     this.onProviderAdd,
@@ -97,7 +120,7 @@ define([
             }
 
             if (event === 'remove') {
-                this.provider.on(
+                this.#provider.on(
                     this.domainObject,
                     'remove',
                     this.onProviderRemove,
@@ -106,36 +129,34 @@ define([
             }
 
             if (event === 'reorder') {
-                this.provider.on(
+                this.#provider.on(
                     this.domainObject,
                     'reorder',
-                    this.onProviderReorder,
+                    this.#onProviderReorder,
                     this
                 );
             }
         }
 
-        this.listeners[event].push({
+        this.#listeners[event].push({
             callback: callback,
             context: context
         });
-    };
-
+    }
     /**
      * Remove a listener.  Must be called with same exact parameters as
      * `off`.
      *
-     * @param event
-     * @param callback
-     * @param [context]
+     * @param {string} event
+     * @param {(...args: any[]) => void} callback
+     * @param {any} [context]
      */
-
-    CompositionCollection.prototype.off = function (event, callback, context) {
-        if (!this.listeners[event]) {
+    off(event, callback, context) {
+        if (!this.#listeners[event]) {
             throw new Error('Event not supported by composition: ' + event);
         }
 
-        const index = this.listeners[event].findIndex(l => {
+        const index = this.#listeners[event].findIndex(l => {
             return l.callback === callback && l.context === context;
         });
 
@@ -143,125 +164,116 @@ define([
             throw new Error('Tried to remove a listener that does not exist');
         }
 
-        this.listeners[event].splice(index, 1);
-        if (this.listeners[event].length === 0) {
+        this.#listeners[event].splice(index, 1);
+        if (this.#listeners[event].length === 0) {
             this._destroy();
 
             // Remove provider listener if this is the last callback to
             // be removed.
-            if (this.provider.off && this.provider.on) {
+            if (this.#provider.off && this.#provider.on) {
                 if (event === 'add') {
-                    this.provider.off(
+                    this.#provider.off(
                         this.domainObject,
                         'add',
                         this.onProviderAdd,
                         this
                     );
                 } else if (event === 'remove') {
-                    this.provider.off(
+                    this.#provider.off(
                         this.domainObject,
                         'remove',
                         this.onProviderRemove,
                         this
                     );
                 } else if (event === 'reorder') {
-                    this.provider.off(
+                    this.#provider.off(
                         this.domainObject,
                         'reorder',
-                        this.onProviderReorder,
+                        this.#onProviderReorder,
                         this
                     );
                 }
             }
         }
-    };
-
+    }
     /**
      * Add a domain object to this composition.
      *
      * A call to [load]{@link module:openmct.CompositionCollection#load}
      * must have resolved before using this method.
      *
-     * @param {module:openmct.DomainObject} child the domain object to add
-     * @param {boolean} skipMutate true if the underlying provider should
-     *        not be updated
-     * @memberof module:openmct.CompositionCollection#
-     * @name add
+     * **TODO:** Remove `skipMutate` parameter.
+     *
+     * @param {DomainObject} child the domain object to add
+     * @param {boolean} skipMutate
+     * **Intended for internal use ONLY.**
+     * true if the underlying provider should not be updated.
      */
-    CompositionCollection.prototype.add = function (child, skipMutate) {
+    add(child, skipMutate) {
         if (!skipMutate) {
-            if (!this.publicAPI.composition.checkPolicy(this.domainObject, child)) {
+            if (!this.#publicAPI.composition.checkPolicy(this.domainObject, child)) {
                 throw `Object of type ${child.type} cannot be added to object of type ${this.domainObject.type}`;
             }
 
-            this.provider.add(this.domainObject, child.identifier);
+            this.#provider.add(this.domainObject, child.identifier);
         } else {
-            if (this.returnMutables && this.publicAPI.objects.supportsMutation(child.identifier)) {
-                let keyString = this.publicAPI.objects.makeKeyString(child.identifier);
+            if (this.returnMutables && this.#publicAPI.objects.supportsMutation(child.identifier)) {
+                let keyString = this.#publicAPI.objects.makeKeyString(child.identifier);
 
-                child = this.publicAPI.objects._toMutable(child);
-                this.mutables[keyString] = child;
+                child = this.#publicAPI.objects.toMutable(child);
+                this.#mutables[keyString] = child;
             }
 
-            this.emit('add', child);
+            this.#emit('add', child);
         }
-    };
-
+    }
     /**
      * Load the domain objects in this composition.
      *
-     * @returns {Promise.<Array.<module:openmct.DomainObject>>} a promise for
+     * @param {AbortSignal} abortSignal
+     * @returns {Promise.<Array.<DomainObject>>} a promise for
      *          the domain objects in this composition
      * @memberof {module:openmct.CompositionCollection#}
      * @name load
      */
-    CompositionCollection.prototype.load = function (abortSignal) {
-        this.cleanUpMutables();
-
-        return this.provider.load(this.domainObject)
-            .then(function (children) {
-                return Promise.all(children.map((c) => this.publicAPI.objects.get(c, abortSignal)));
-            }.bind(this))
-            .then(function (childObjects) {
-                childObjects.forEach(c => this.add(c, true));
-
-                return childObjects;
-            }.bind(this))
-            .then(function (children) {
-                this.emit('load');
-
-                return children;
-            }.bind(this));
-    };
+    async load(abortSignal) {
+        this.#cleanUpMutables();
+        const children = await this.#provider.load(this.domainObject);
+        const childObjects = await Promise.all(children.map((c) => this.#publicAPI.objects.get(c, abortSignal)));
+        childObjects.forEach(c => this.add(c, true));
+        this.#emit('load');
 
+        return childObjects;
+    }
     /**
      * Remove a domain object from this composition.
      *
      * A call to [load]{@link module:openmct.CompositionCollection#load}
      * must have resolved before using this method.
      *
-     * @param {module:openmct.DomainObject} child the domain object to remove
-     * @param {boolean} skipMutate true if the underlying provider should
-     *        not be updated
-     * @memberof module:openmct.CompositionCollection#
+     * **TODO:** Remove `skipMutate` parameter.
+     *
+     * @param {DomainObject} child the domain object to remove
+     * @param {boolean} skipMutate
+     * **Intended for internal use ONLY.**
+     * true if the underlying provider should not be updated.
      * @name remove
      */
-    CompositionCollection.prototype.remove = function (child, skipMutate) {
+    remove(child, skipMutate) {
         if (!skipMutate) {
-            this.provider.remove(this.domainObject, child.identifier);
+            this.#provider.remove(this.domainObject, child.identifier);
         } else {
             if (this.returnMutables) {
-                let keyString = this.publicAPI.objects.makeKeyString(child);
-                if (this.mutables[keyString] !== undefined && this.mutables[keyString].isMutable) {
-                    this.publicAPI.objects.destroyMutable(this.mutables[keyString]);
-                    delete this.mutables[keyString];
+                let keyString = this.#publicAPI.objects.makeKeyString(child);
+                if (this.#mutables[keyString] !== undefined && this.#mutables[keyString].isMutable) {
+                    this.#publicAPI.objects.destroyMutable(this.#mutables[keyString]);
+                    delete this.#mutables[keyString];
                 }
             }
 
-            this.emit('remove', child);
+            this.#emit('remove', child);
         }
-    };
-
+    }
     /**
      * Reorder the domain objects in this composition.
      *
@@ -270,67 +282,75 @@ define([
      *
      * @param {number} oldIndex
      * @param {number} newIndex
-     * @memberof module:openmct.CompositionCollection#
      * @name remove
      */
-    CompositionCollection.prototype.reorder = function (oldIndex, newIndex, skipMutate) {
-        this.provider.reorder(this.domainObject, oldIndex, newIndex);
-    };
-
+    reorder(oldIndex, newIndex, _skipMutate) {
+        this.#provider.reorder(this.domainObject, oldIndex, newIndex);
+    }
     /**
-     * Handle reorder from provider.
-     * @private
+     * Destroy mutationListener
      */
-    CompositionCollection.prototype.onProviderReorder = function (reorderMap) {
-        this.emit('reorder', reorderMap);
-    };
-
-    /**
-     * Handle adds from provider.
-     * @private
-     */
-    CompositionCollection.prototype.onProviderAdd = function (childId) {
-        return this.publicAPI.objects.get(childId).then(function (child) {
-            this.add(child, true);
-
-            return child;
-        }.bind(this));
-    };
-
-    /**
-     * Handle removal from provider.
-     * @private
-     */
-    CompositionCollection.prototype.onProviderRemove = function (child) {
-        this.remove(child, true);
-    };
-
-    CompositionCollection.prototype._destroy = function () {
+    _destroy() {
         if (this.mutationListener) {
             this.mutationListener();
             delete this.mutationListener;
         }
-    };
+    }
+    /**
+     * Handle reorder from provider.
+     * @private
+     * @param {object} reorderMap
+     */
+    #onProviderReorder(reorderMap) {
+        this.#emit('reorder', reorderMap);
+    }
+
+    /**
+     * Handle adds from provider.
+     * @private
+     * @param {import('../objects/ObjectAPI').Identifier} childId
+     * @returns {DomainObject}
+     */
+    #onProviderAdd(childId) {
+        return this.#publicAPI.objects.get(childId).then(function (child) {
+            this.add(child, true);
+
+            return child;
+        }.bind(this));
+    }
+
+    /**
+     * Handle removal from provider.
+     * @param {DomainObject} child
+     */
+    #onProviderRemove(child) {
+        this.remove(child, true);
+    }
 
     /**
      * Emit events.
+     *
      * @private
+     * @param {string} event
+     * @param {...args.<any>} payload
      */
-    CompositionCollection.prototype.emit = function (event, ...payload) {
-        this.listeners[event].forEach(function (l) {
+    #emit(event, ...payload) {
+        this.#listeners[event].forEach(function (l) {
             if (l.context) {
                 l.callback.apply(l.context, payload);
             } else {
                 l.callback(...payload);
             }
         });
-    };
+    }
 
-    CompositionCollection.prototype.cleanUpMutables = function () {
-        Object.values(this.mutables).forEach(mutable => {
-            this.publicAPI.objects.destroyMutable(mutable);
+    /**
+     * Destroy all mutables.
+     * @private
+     */
+    #cleanUpMutables() {
+        Object.values(this.#mutables).forEach(mutable => {
+            this.#publicAPI.objects.destroyMutable(mutable);
         });
-    };
-
-    return CompositionCollection;
-});
+    }
+}

src/api/composition/CompositionProvider.js

@@ -0,0 +1,262 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2022, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+import _ from 'lodash';
+import objectUtils from "../objects/object-utils";
+
+/**
+  * @typedef {import('../objects/ObjectAPI').DomainObject} DomainObject
+  */
+
+/**
+  * @typedef {import('../objects/ObjectAPI').Identifier} Identifier
+  */
+
+/**
+  * @typedef {import('./CompositionAPI').default} CompositionAPI
+  */
+
+/**
+  * @typedef {import('../../../openmct').OpenMCT} OpenMCT
+  */
+
+/**
+  * A CompositionProvider provides the underlying implementation of
+  * composition-related behavior for certain types of domain object.
+  *
+  * By default, a composition provider will not support composition
+  * modification.  You can add support for mutation of composition by
+  * defining `add` and/or `remove` methods.
+  *
+  * If the composition of an object can change over time-- perhaps via
+  * server updates or mutation via the add/remove methods, then one must
+  * trigger events as necessary.
+  *
+  */
+export default class CompositionProvider {
+    #publicAPI;
+    #listeningTo;
+
+    /**
+      * @param {OpenMCT} publicAPI
+      * @param {CompositionAPI} compositionAPI
+      */
+    constructor(publicAPI, compositionAPI) {
+        this.#publicAPI = publicAPI;
+        this.#listeningTo = {};
+
+        compositionAPI.addPolicy(this.#cannotContainItself.bind(this));
+        compositionAPI.addPolicy(this.#supportsComposition.bind(this));
+    }
+
+    get listeningTo() {
+        return this.#listeningTo;
+    }
+
+    get establishTopicListener() {
+        return this.#establishTopicListener.bind(this);
+    }
+
+    get publicAPI() {
+        return this.#publicAPI;
+    }
+
+    /**
+      * Check if this provider should be used to load composition for a
+      * particular domain object.
+      * @method appliesTo
+      * @param {import('../objects/ObjectAPI').DomainObject} domainObject the domain object
+      *        to check
+      * @returns {boolean} true if this provider can provide composition for a given domain object
+      */
+    appliesTo(domainObject) {
+        throw new Error("This method must be implemented by a subclass.");
+    }
+    /**
+      * Load any domain objects contained in the composition of this domain
+      * object.
+      * @param {DomainObject} domainObject the domain object
+      *        for which to load composition
+      * @returns {Promise<Identifier[]>} a promise for
+      *          the Identifiers in this composition
+      * @method load
+      */
+    load(domainObject) {
+        throw new Error("This method must be implemented by a subclass.");
+    }
+    /**
+      * Attach listeners for changes to the composition of a given domain object.
+      * Supports `add` and `remove` events.
+      *
+      * @param {DomainObject} domainObject to listen to
+      * @param {string} event the event to bind to, either `add` or `remove`.
+      * @param {Function} callback callback to invoke when event is triggered.
+      * @param {any} [context] to use when invoking callback.
+      */
+    on(domainObject,
+        event,
+        callback,
+        context) {
+        throw new Error("This method must be implemented by a subclass.");
+    }
+    /**
+      * Remove a listener that was previously added for a given domain object.
+      * event name, callback, and context must be the same as when the listener
+      * was originally attached.
+      *
+      * @param {DomainObject} domainObject to remove listener for
+      * @param {string} event event to stop listening to: `add` or `remove`.
+      * @param {Function} callback callback to remove.
+      * @param {any} context of callback to remove.
+      */
+    off(domainObject,
+        event,
+        callback,
+        context) {
+        throw new Error("This method must be implemented by a subclass.");
+    }
+    /**
+      * Remove a domain object from another domain object's composition.
+      *
+      * This method is optional; if not present, adding to a domain object's
+      * composition using this provider will be disallowed.
+      *
+      * @param {DomainObject} domainObject the domain object
+      *        which should have its composition modified
+      * @param {Identifier} childId the domain object to remove
+      * @method remove
+      */
+    remove(domainObject, childId) {
+        throw new Error("This method must be implemented by a subclass.");
+    }
+    /**
+      * Add a domain object to another domain object's composition.
+      *
+      * This method is optional; if not present, adding to a domain object's
+      * composition using this provider will be disallowed.
+      *
+      * @param {DomainObject} parent the domain object
+      *        which should have its composition modified
+      * @param {Identifier} childId the domain object to add
+      * @method add
+      */
+    add(parent, childId) {
+        throw new Error("This method must be implemented by a subclass.");
+    }
+
+    /**
+      * @param {DomainObject} parent
+      * @param {Identifier} childId
+      * @returns {boolean}
+      */
+    includes(parent, childId) {
+        throw new Error("This method must be implemented by a subclass.");
+    }
+
+    /**
+      * @param {DomainObject} domainObject
+      * @param {number} oldIndex
+      * @param {number} newIndex
+      * @returns
+      */
+    reorder(domainObject, oldIndex, newIndex) {
+        throw new Error("This method must be implemented by a subclass.");
+    }
+
+    /**
+      * Listens on general mutation topic, using injector to fetch to avoid
+      * circular dependencies.
+      * @private
+      */
+    #establishTopicListener() {
+        if (this.topicListener) {
+            return;
+        }
+
+        this.#publicAPI.objects.eventEmitter.on('mutation', this.#onMutation.bind(this));
+        this.topicListener = () => {
+            this.#publicAPI.objects.eventEmitter.off('mutation', this.#onMutation.bind(this));
+        };
+    }
+
+    /**
+      * @private
+      * @param {DomainObject} parent
+      * @param {DomainObject} child
+      * @returns {boolean}
+      */
+    #cannotContainItself(parent, child) {
+        return !(parent.identifier.namespace === child.identifier.namespace
+               && parent.identifier.key === child.identifier.key);
+    }
+
+    /**
+      * @private
+      * @param {DomainObject} parent
+      * @returns {boolean}
+      */
+    #supportsComposition(parent, _child) {
+        return this.#publicAPI.composition.supportsComposition(parent);
+    }
+
+    /**
+      * Handles mutation events.  If there are active listeners for the mutated
+      * object, detects changes to composition and triggers necessary events.
+      *
+      * @private
+      * @param {DomainObject} oldDomainObject
+      */
+    #onMutation(oldDomainObject) {
+        const id = objectUtils.makeKeyString(oldDomainObject.identifier);
+        const listeners = this.#listeningTo[id];
+
+        if (!listeners) {
+            return;
+        }
+
+        const oldComposition = listeners.composition.map(objectUtils.makeKeyString);
+        const newComposition = oldDomainObject.composition.map(objectUtils.makeKeyString);
+
+        const added = _.difference(newComposition, oldComposition).map(objectUtils.parseKeyString);
+        const removed = _.difference(oldComposition, newComposition).map(objectUtils.parseKeyString);
+
+        function notify(value) {
+            return function (listener) {
+                if (listener.context) {
+                    listener.callback.call(listener.context, value);
+                } else {
+                    listener.callback(value);
+                }
+            };
+        }
+
+        listeners.composition = newComposition.map(objectUtils.parseKeyString);
+
+        added.forEach(function (addedChild) {
+            listeners.add.forEach(notify(addedChild));
+        });
+
+        removed.forEach(function (removedChild) {
+            listeners.remove.forEach(notify(removedChild));
+        });
+    }
+}
+

src/api/composition/DefaultCompositionProvider.js

@@ -19,102 +19,79 @@
  * this source code distribution or the Licensing information page available
  * at runtime from the About dialog for additional information.
  *****************************************************************************/
+import objectUtils from "../objects/object-utils";
+import CompositionProvider from './CompositionProvider';
 
-define([
-    'lodash',
-    'objectUtils'
-], function (
-    _,
-    objectUtils
-) {
-    /**
-     * A CompositionProvider provides the underlying implementation of
-     * composition-related behavior for certain types of domain object.
-     *
-     * By default, a composition provider will not support composition
-     * modification.  You can add support for mutation of composition by
-     * defining `add` and/or `remove` methods.
-     *
-     * If the composition of an object can change over time-- perhaps via
-     * server updates or mutation via the add/remove methods, then one must
-     * trigger events as necessary.
-     *
-     * @interface CompositionProvider
-     * @memberof module:openmct
-     */
+/**
+ * @typedef {import('../objects/ObjectAPI').DomainObject} DomainObject
+ */
 
-    function DefaultCompositionProvider(publicAPI, compositionAPI) {
-        this.publicAPI = publicAPI;
-        this.listeningTo = {};
-        this.onMutation = this.onMutation.bind(this);
+/**
+ * @typedef {import('../objects/ObjectAPI').Identifier} Identifier
+ */
 
-        this.cannotContainItself = this.cannotContainItself.bind(this);
-        this.supportsComposition = this.supportsComposition.bind(this);
+/**
+ * @typedef {import('./CompositionAPI').default} CompositionAPI
+ */
 
-        compositionAPI.addPolicy(this.cannotContainItself);
-        compositionAPI.addPolicy(this.supportsComposition);
-    }
-
-    /**
-     * @private
-     */
-    DefaultCompositionProvider.prototype.cannotContainItself = function (parent, child) {
-        return !(parent.identifier.namespace === child.identifier.namespace
-            && parent.identifier.key === child.identifier.key);
-    };
-
-    /**
-     * @private
-     */
-    DefaultCompositionProvider.prototype.supportsComposition = function (parent, child) {
-        return this.publicAPI.composition.supportsComposition(parent);
-    };
+/**
+ * @typedef {import('../../../openmct').OpenMCT} OpenMCT
+ */
 
+/**
+ * A CompositionProvider provides the underlying implementation of
+ * composition-related behavior for certain types of domain object.
+ *
+ * By default, a composition provider will not support composition
+ * modification.  You can add support for mutation of composition by
+ * defining `add` and/or `remove` methods.
+ *
+ * If the composition of an object can change over time-- perhaps via
+ * server updates or mutation via the add/remove methods, then one must
+ * trigger events as necessary.
+ * @extends CompositionProvider
+ */
+export default class DefaultCompositionProvider extends CompositionProvider {
     /**
      * Check if this provider should be used to load composition for a
      * particular domain object.
-     * @param {module:openmct.DomainObject} domainObject the domain object
+     * @override
+     * @param {DomainObject} domainObject the domain object
      *        to check
-     * @returns {boolean} true if this provider can provide
-     *          composition for a given domain object
-     * @memberof module:openmct.CompositionProvider#
-     * @method appliesTo
+     * @returns {boolean} true if this provider can provide composition for a given domain object
      */
-    DefaultCompositionProvider.prototype.appliesTo = function (domainObject) {
+    appliesTo(domainObject) {
         return Boolean(domainObject.composition);
-    };
-
+    }
     /**
      * Load any domain objects contained in the composition of this domain
      * object.
-     * @param {module:openmct.DomainObject} domainObject the domain object
+     * @override
+     * @param {DomainObject} domainObject the domain object
      *        for which to load composition
-     * @returns {Promise.<Array.<module:openmct.Identifier>>} a promise for
+     * @returns {Promise<Identifier[]>} a promise for
      *          the Identifiers in this composition
-     * @memberof module:openmct.CompositionProvider#
-     * @method load
      */
-    DefaultCompositionProvider.prototype.load = function (domainObject) {
+    load(domainObject) {
         return Promise.all(domainObject.composition);
-    };
-
+    }
     /**
      * Attach listeners for changes to the composition of a given domain object.
      * Supports `add` and `remove` events.
      *
-     * @param {module:openmct.DomainObject} domainObject to listen to
-     * @param String event the event to bind to, either `add` or `remove`.
-     * @param Function callback callback to invoke when event is triggered.
-     * @param [context] context to use when invoking callback.
+     * @override
+     * @param {DomainObject} domainObject to listen to
+     * @param {string} event the event to bind to, either `add` or `remove`.
+     * @param {Function} callback callback to invoke when event is triggered.
+     * @param {any} [context] to use when invoking callback.
      */
-    DefaultCompositionProvider.prototype.on = function (
-        domainObject,
+    on(domainObject,
         event,
         callback,
-        context
-    ) {
+        context) {
         this.establishTopicListener();
 
+        /** @type {string} */
         const keyString = objectUtils.makeKeyString(domainObject.identifier);
         let objectListeners = this.listeningTo[keyString];
 
@@ -131,24 +108,24 @@ define([
             callback: callback,
             context: context
         });
-    };
-
+    }
     /**
      * Remove a listener that was previously added for a given domain object.
      * event name, callback, and context must be the same as when the listener
      * was originally attached.
      *
-     * @param {module:openmct.DomainObject} domainObject to remove listener for
-     * @param String event event to stop listening to: `add` or `remove`.
-     * @param Function callback callback to remove.
-     * @param [context] context of callback to remove.
+     * @override
+     * @param {DomainObject} domainObject to remove listener for
+     * @param {string} event event to stop listening to: `add` or `remove`.
+     * @param {Function} callback callback to remove.
+     * @param {any} context of callback to remove.
      */
-    DefaultCompositionProvider.prototype.off = function (
-        domainObject,
+    off(domainObject,
         event,
         callback,
-        context
-    ) {
+        context) {
+
+        /** @type {string} */
         const keyString = objectUtils.makeKeyString(domainObject.identifier);
         const objectListeners = this.listeningTo[keyString];
 
@@ -160,57 +137,64 @@ define([
         if (!objectListeners.add.length && !objectListeners.remove.length && !objectListeners.reorder.length) {
             delete this.listeningTo[keyString];
         }
-    };
-
+    }
     /**
      * Remove a domain object from another domain object's composition.
      *
      * This method is optional; if not present, adding to a domain object's
      * composition using this provider will be disallowed.
      *
-     * @param {module:openmct.DomainObject} domainObject the domain object
+     * @override
+     * @param {DomainObject} domainObject the domain object
      *        which should have its composition modified
-     * @param {module:openmct.DomainObject} child the domain object to remove
-     * @memberof module:openmct.CompositionProvider#
+     * @param {Identifier} childId the domain object to remove
      * @method remove
      */
-    DefaultCompositionProvider.prototype.remove = function (domainObject, childId) {
+    remove(domainObject, childId) {
         let composition = domainObject.composition.filter(function (child) {
             return !(childId.namespace === child.namespace
-                && childId.key === child.key);
+                      && childId.key === child.key);
         });
 
         this.publicAPI.objects.mutate(domainObject, 'composition', composition);
-    };
-
+    }
     /**
      * Add a domain object to another domain object's composition.
      *
      * This method is optional; if not present, adding to a domain object's
      * composition using this provider will be disallowed.
      *
-     * @param {module:openmct.DomainObject} domainObject the domain object
+     * @override
+     * @param {DomainObject} parent the domain object
      *        which should have its composition modified
-     * @param {module:openmct.DomainObject} child the domain object to add
-     * @memberof module:openmct.CompositionProvider#
+     * @param {Identifier} childId the domain object to add
      * @method add
      */
-    DefaultCompositionProvider.prototype.add = function (parent, childId) {
+    add(parent, childId) {
         if (!this.includes(parent, childId)) {
             parent.composition.push(childId);
             this.publicAPI.objects.mutate(parent, 'composition', parent.composition);
         }
-    };
+    }
 
     /**
-     * @private
+     * @override
+     * @param {DomainObject} parent
+     * @param {Identifier} childId
+     * @returns {boolean}
      */
-    DefaultCompositionProvider.prototype.includes = function (parent, childId) {
-        return parent.composition.some(composee =>
-            this.publicAPI.objects.areIdsEqual(composee, childId));
-    };
+    includes(parent, childId) {
+        return parent.composition.some(composee => this.publicAPI.objects.areIdsEqual(composee, childId));
+    }
 
-    DefaultCompositionProvider.prototype.reorder = function (domainObject, oldIndex, newIndex) {
+    /**
+     * @override
+     * @param {DomainObject} domainObject
+     * @param {number} oldIndex
+     * @param {number} newIndex
+     * @returns
+     */
+    reorder(domainObject, oldIndex, newIndex) {
         let newComposition = domainObject.composition.slice();
         let removeId = oldIndex > newIndex ? oldIndex + 1 : oldIndex;
         let insertPosition = oldIndex < newIndex ? newIndex + 1 : newIndex;
@@ -241,6 +225,7 @@ define([
 
         this.publicAPI.objects.mutate(domainObject, 'composition', newComposition);
 
+        /** @type {string} */
         let id = objectUtils.makeKeyString(domainObject.identifier);
         const listeners = this.listeningTo[id];
 
@@ -257,66 +242,5 @@ define([
                 listener.callback(reorderPlan);
             }
         }
-    };
-
-    /**
-     * Listens on general mutation topic, using injector to fetch to avoid
-     * circular dependencies.
-     *
-     * @private
-     */
-    DefaultCompositionProvider.prototype.establishTopicListener = function () {
-        if (this.topicListener) {
-            return;
-        }
-
-        this.publicAPI.objects.eventEmitter.on('mutation', this.onMutation);
-        this.topicListener = () => {
-            this.publicAPI.objects.eventEmitter.off('mutation', this.onMutation);
-        };
-    };
-
-    /**
-     * Handles mutation events.  If there are active listeners for the mutated
-     * object, detects changes to composition and triggers necessary events.
-     *
-     * @private
-     */
-    DefaultCompositionProvider.prototype.onMutation = function (oldDomainObject) {
-        const id = objectUtils.makeKeyString(oldDomainObject.identifier);
-        const listeners = this.listeningTo[id];
-
-        if (!listeners) {
-            return;
-        }
-
-        const oldComposition = listeners.composition.map(objectUtils.makeKeyString);
-        const newComposition = oldDomainObject.composition.map(objectUtils.makeKeyString);
-
-        const added = _.difference(newComposition, oldComposition).map(objectUtils.parseKeyString);
-        const removed = _.difference(oldComposition, newComposition).map(objectUtils.parseKeyString);
-
-        function notify(value) {
-            return function (listener) {
-                if (listener.context) {
-                    listener.callback.call(listener.context, value);
-                } else {
-                    listener.callback(value);
-                }
-            };
-        }
-
-        listeners.composition = newComposition.map(objectUtils.parseKeyString);
-
-        added.forEach(function (addedChild) {
-            listeners.add.forEach(notify(addedChild));
-        });
-
-        removed.forEach(function (removedChild) {
-            listeners.remove.forEach(notify(removedChild));
-        });
-
-    };
-
-    return DefaultCompositionProvider;
-});
+    }
+}

src/api/forms/FormsAPI.js

@@ -23,13 +23,11 @@
 import FormController from './FormController';
 import FormProperties from './components/FormProperties.vue';
 
-import EventEmitter from 'EventEmitter';
 import Vue from 'vue';
+import _ from 'lodash';
 
-export default class FormsAPI extends EventEmitter {
+export default class FormsAPI {
     constructor(openmct) {
-        super();
-
         this.openmct = openmct;
         this.formController = new FormController(openmct);
     }
@@ -92,29 +90,75 @@ export default class FormsAPI extends EventEmitter {
 
     /**
      * Show form inside an Overlay dialog with given form structure
+     * @public
+     * @param {Array<Section>} formStructure a form structure, array of section
+     * @param {Object} options
+     *      @property {function} onChange a callback function when any changes detected
+     */
+    showForm(formStructure, {
+        onChange
+    } = {}) {
+        let overlay;
+
+        const self = this;
+
+        const overlayEl = document.createElement('div');
+        overlayEl.classList.add('u-contents');
+
+        overlay = self.openmct.overlays.overlay({
+            element: overlayEl,
+            size: 'dialog'
+        });
+
+        let formSave;
+        let formCancel;
+        const promise = new Promise((resolve, reject) => {
+            formSave = resolve;
+            formCancel = reject;
+        });
+
+        this.showCustomForm(formStructure, {
+            element: overlayEl,
+            onChange
+        })
+            .then((response) => {
+                overlay.dismiss();
+                formSave(response);
+            })
+            .catch((response) => {
+                overlay.dismiss();
+                formCancel(response);
+            });
+
+        return promise;
+    }
+
+    /**
+     * Show form as a child of the element provided with given form structure
      *
      * @public
      * @param {Array<Section>} formStructure a form structure, array of section
      * @param {Object} options
      *      @property {HTMLElement} element Parent Element to render a Form
      *      @property {function} onChange a callback function when any changes detected
-     *      @property {function} onSave a callback function when form is submitted
-     *      @property {function} onDismiss a callback function when form is dismissed
      */
-    showForm(formStructure, {
+    showCustomForm(formStructure, {
         element,
         onChange
     } = {}) {
-        const changes = {};
-        let overlay;
-        let onDismiss;
-        let onSave;
+        if (element === undefined) {
+            throw Error('Required element parameter not provided');
+        }
 
         const self = this;
 
+        const changes = {};
+        let formSave;
+        let formCancel;
+
         const promise = new Promise((resolve, reject) => {
-            onSave = onFormAction(resolve);
-            onDismiss = onFormAction(reject);
+            formSave = onFormAction(resolve);
+            formCancel = onFormAction(reject);
         });
 
         const vm = new Vue({
@@ -126,26 +170,17 @@ export default class FormsAPI extends EventEmitter {
                 return {
                     formStructure,
                     onChange: onFormPropertyChange,
-                    onDismiss,
-                    onSave
+                    onCancel: formCancel,
+                    onSave: formSave
                 };
             },
-            template: '<FormProperties :model="formStructure" @onChange="onChange" @onDismiss="onDismiss" @onSave="onSave"></FormProperties>'
+            template: '<FormProperties :model="formStructure" @onChange="onChange" @onCancel="onCancel" @onSave="onSave"></FormProperties>'
         }).$mount();
 
         const formElement = vm.$el;
-        if (element) {
-            element.append(formElement);
-        } else {
-            overlay = self.openmct.overlays.overlay({
-                element: vm.$el,
-                size: 'dialog',
-                onDestroy: () => vm.$destroy()
-            });
-        }
+        element.append(formElement);
 
         function onFormPropertyChange(data) {
-            self.emit('onFormPropertyChange', data);
             if (onChange) {
                 onChange(data);
             }
@@ -158,17 +193,14 @@ export default class FormsAPI extends EventEmitter {
                     key = property.join('.');
                 }
 
-                changes[key] = data.value;
+                _.set(changes, key, data.value);
             }
         }
 
         function onFormAction(callback) {
             return () => {
-                if (element) {
-                    formElement.remove();
-                } else {
-                    overlay.dismiss();
-                }
+                formElement.remove();
+                vm.$destroy();
 
                 if (callback) {
                     callback(changes);

src/api/forms/FormsAPISpec.js

@@ -133,7 +133,7 @@ describe('The Forms API', () => {
         });
 
         it('when container element is provided', (done) => {
-            openmct.forms.showForm(formStructure, { element }).catch(() => {
+            openmct.forms.showCustomForm(formStructure, { element }).catch(() => {
                 done();
             });
             const titleElement = element.querySelector('.c-overlay__dialog-title');

src/api/forms/components/FormProperties.vue

@@ -73,7 +73,7 @@
             tabindex="0"
             class="c-button js-cancel-button"
             aria-label="Cancel"
-            @click="onDismiss"
+            @click="onCancel"
         >
             {{ cancelLabel }}
         </button>
@@ -164,8 +164,8 @@ export default {
 
             this.$emit('onChange', data);
         },
-        onDismiss() {
-            this.$emit('onDismiss');
+        onCancel() {
+            this.$emit('onCancel');
         },
         onSave() {
             this.$emit('onSave');

src/api/forms/components/controls/SelectField.vue

@@ -26,6 +26,7 @@
         v-model="selected"
         required="model.required"
         name="mctControl"
+        :aria-label="model.ariaLabel || model.name"
         @change="onChange($event)"
     >
         <option

src/api/forms/components/controls/TextAreaField.vue

@@ -27,6 +27,7 @@
         :class="model.cssClass"
     >
         <textarea
+            :id="`${model.key}-textarea`"
             v-model="field"
             type="text"
             :size="model.size"

src/api/menu/components/Menu.vue

@@ -3,39 +3,52 @@
     class="c-menu"
     :class="options.menuClass"
 >
-    <ul v-if="options.actions.length && options.actions[0].length">
+    <ul
+        v-if="options.actions.length && options.actions[0].length"
+        role="menu"
+    >
         <template
             v-for="(actionGroups, index) in options.actions"
         >
-            <li
-                v-for="action in actionGroups"
-                :key="action.name"
-                :class="[action.cssClass, action.isDisabled ? 'disabled' : '']"
-                :title="action.description"
-                :data-testid="action.testId || false"
-                @click="action.onItemClicked"
-            >
-                {{ action.name }}
-            </li>
             <div
-                v-if="index !== options.actions.length - 1"
                 :key="index"
-                class="c-menu__section-separator"
+                role="group"
             >
-            </div>
-            <li
-                v-if="actionGroups.length === 0"
-                :key="index"
-            >
-                No actions defined.
-            </li>
-        </template>
+                <li
+                    v-for="action in actionGroups"
+                    :key="action.name"
+                    role="menuitem"
+                    :class="[action.cssClass, action.isDisabled ? 'disabled' : '']"
+                    :title="action.description"
+                    :data-testid="action.testId || false"
+                    @click="action.onItemClicked"
+                >
+                    {{ action.name }}
+                </li>
+                <div
+                    v-if="index !== options.actions.length - 1"
+                    :key="index"
+                    role="separator"
+                    class="c-menu__section-separator"
+                >
+                </div>
+                <li
+                    v-if="actionGroups.length === 0"
+                    :key="index"
+                >
+                    No actions defined.
+                </li>
+            </div></template>
     </ul>
 
-    <ul v-else>
+    <ul
+        v-else
+        role="menu"
+    >
         <li
             v-for="action in options.actions"
             :key="action.name"
+            role="menuitem"
             :class="[action.cssClass, action.isDisabled ? 'disabled' : '']"
             :title="action.description"
             :data-testid="action.testId || false"

src/api/menu/components/SuperMenu.vue

@@ -5,45 +5,54 @@
 >
     <ul
         v-if="options.actions.length && options.actions[0].length"
+        role="menu"
         class="c-super-menu__menu"
     >
         <template
             v-for="(actionGroups, index) in options.actions"
         >
-            <li
-                v-for="action in actionGroups"
-                :key="action.name"
-                :class="[action.cssClass, action.isDisabled ? 'disabled' : '']"
-                :title="action.description"
-                :data-testid="action.testId || false"
-                @click="action.onItemClicked"
-                @mouseover="toggleItemDescription(action)"
-                @mouseleave="toggleItemDescription()"
-            >
-                {{ action.name }}
-            </li>
             <div
-                v-if="index !== options.actions.length - 1"
                 :key="index"
-                class="c-menu__section-separator"
+                role="group"
             >
-            </div>
-            <li
-                v-if="actionGroups.length === 0"
-                :key="index"
-            >
-                No actions defined.
-            </li>
-        </template>
+                <li
+                    v-for="action in actionGroups"
+                    :key="action.name"
+                    role="menuitem"
+                    :class="[action.cssClass, action.isDisabled ? 'disabled' : '']"
+                    :title="action.description"
+                    :data-testid="action.testId || false"
+                    @click="action.onItemClicked"
+                    @mouseover="toggleItemDescription(action)"
+                    @mouseleave="toggleItemDescription()"
+                >
+                    {{ action.name }}
+                </li>
+                <div
+                    v-if="index !== options.actions.length - 1"
+                    :key="index"
+                    role="separator"
+                    class="c-menu__section-separator"
+                >
+                </div>
+                <li
+                    v-if="actionGroups.length === 0"
+                    :key="index"
+                >
+                    No actions defined.
+                </li>
+            </div></template>
     </ul>
 
     <ul
         v-else
         class="c-super-menu__menu"
+        role="menu"
     >
         <li
             v-for="action in options.actions"
             :key="action.name"
+            role="menuitem"
             :class="action.cssClass"
             :title="action.description"
             :data-testid="action.testId || false"

src/api/objects/InMemorySearchProvider.js

@@ -42,7 +42,6 @@ class InMemorySearchProvider {
         this.openmct = openmct;
         this.indexedIds = {};
         this.indexedCompositions = {};
-        this.indexedTags = {};
         this.idsToIndex = [];
         this.pendingIndex = {};
         this.pendingRequests = 0;
@@ -61,7 +60,6 @@ class InMemorySearchProvider {
         this.localSearchForObjects = this.localSearchForObjects.bind(this);
         this.localSearchForAnnotations = this.localSearchForAnnotations.bind(this);
         this.localSearchForTags = this.localSearchForTags.bind(this);
-        this.localSearchForNotebookAnnotations = this.localSearchForNotebookAnnotations.bind(this);
         this.onAnnotationCreation = this.onAnnotationCreation.bind(this);
         this.onCompositionAdded = this.onCompositionAdded.bind(this);
         this.onCompositionRemoved = this.onCompositionRemoved.bind(this);
@@ -93,7 +91,7 @@ class InMemorySearchProvider {
 
         this.searchTypes = this.openmct.objects.SEARCH_TYPES;
 
-        this.supportedSearchTypes = [this.searchTypes.OBJECTS, this.searchTypes.ANNOTATIONS, this.searchTypes.NOTEBOOK_ANNOTATIONS, this.searchTypes.TAGS];
+        this.supportedSearchTypes = [this.searchTypes.OBJECTS, this.searchTypes.ANNOTATIONS, this.searchTypes.TAGS];
 
         this.scheduleForIndexing(rootObject.identifier);
 
@@ -163,8 +161,6 @@ class InMemorySearchProvider {
             return this.localSearchForObjects(queryId, query, maxResults);
         } else if (searchType === this.searchTypes.ANNOTATIONS) {
             return this.localSearchForAnnotations(queryId, query, maxResults);
-        } else if (searchType === this.searchTypes.NOTEBOOK_ANNOTATIONS) {
-            return this.localSearchForNotebookAnnotations(queryId, query, maxResults);
         } else if (searchType === this.searchTypes.TAGS) {
             return this.localSearchForTags(queryId, query, maxResults);
         } else {
@@ -281,13 +277,6 @@ class InMemorySearchProvider {
         provider.index(domainObject);
     }
 
-    onTagMutation(domainObject, newTags) {
-        domainObject.tags = newTags;
-        const provider = this;
-
-        provider.index(domainObject);
-    }
-
     onCompositionAdded(newDomainObjectToIndex) {
         const provider = this;
         // The object comes in as a mutable domain object, which has functions,
@@ -342,14 +331,6 @@ class InMemorySearchProvider {
                 composition.on('remove', this.onCompositionRemoved);
                 this.indexedCompositions[keyString] = composition;
             }
-
-            if (domainObject.type === 'annotation') {
-                this.indexedTags[keyString] = this.openmct.objects.observe(
-                    domainObject,
-                    'tags',
-                    this.onTagMutation.bind(this, domainObject)
-                );
-            }
         }
 
         if ((keyString !== 'ROOT')) {
@@ -581,43 +562,6 @@ class InMemorySearchProvider {
         this.onWorkerMessage(eventToReturn);
     }
 
-    /**
-     * A local version of the same SharedWorker function
-     * if we don't have SharedWorkers available (e.g., iOS)
-     */
-    localSearchForNotebookAnnotations(queryId, {entryId, targetKeyString}, maxResults) {
-        // This results dictionary will have domain object ID keys which
-        // point to the value the domain object's score.
-        let results = [];
-        const message = {
-            request: 'searchForNotebookAnnotations',
-            results: [],
-            total: 0,
-            queryId
-        };
-
-        const matchingAnnotations = this.localIndexedAnnotationsByDomainObject[targetKeyString];
-        if (matchingAnnotations) {
-            results = matchingAnnotations.filter(matchingAnnotation => {
-                if (!matchingAnnotation.targets) {
-                    return false;
-                }
-
-                const target = matchingAnnotation.targets[targetKeyString];
-
-                return (target && target.entryId && (target.entryId === entryId));
-            });
-        }
-
-        message.total = results.length;
-        message.results = results
-            .slice(0, maxResults);
-        const eventToReturn = {
-            data: message
-        };
-        this.onWorkerMessage(eventToReturn);
-    }
-
     destroyObservers(observers) {
         Object.entries(observers).forEach(([keyString, unobserve]) => {
             if (typeof unobserve === 'function') {

src/api/objects/InMemorySearchWorker.js

@@ -43,8 +43,6 @@
                 port.postMessage(searchForAnnotations(event.data));
             } else if (requestType === 'TAGS') {
                 port.postMessage(searchForTags(event.data));
-            } else if (requestType === 'NOTEBOOK_ANNOTATIONS') {
-                port.postMessage(searchForNotebookAnnotations(event.data));
             } else {
                 throw new Error(`Unknown request ${event.data.request}`);
             }
@@ -204,33 +202,4 @@
 
         return message;
     }
-
-    function searchForNotebookAnnotations(data) {
-        let results = [];
-        const message = {
-            request: 'searchForNotebookAnnotations',
-            results: {},
-            total: 0,
-            queryId: data.queryId
-        };
-
-        const matchingAnnotations = indexedAnnotationsByDomainObject[data.input.targetKeyString];
-        if (matchingAnnotations) {
-            results = matchingAnnotations.filter(matchingAnnotation => {
-                if (!matchingAnnotation.targets) {
-                    return false;
-                }
-
-                const target = matchingAnnotation.targets[data.input.targetKeyString];
-
-                return (target && target.entryId && (target.entryId === data.input.entryId));
-            });
-        }
-
-        message.total = results.length;
-        message.results = results
-            .slice(0, data.maxResults);
-
-        return message;
-    }
 }());

src/api/objects/InterceptorRegistry.js

@@ -19,6 +19,7 @@
  * this source code distribution or the Licensing information page available
  * at runtime from the About dialog for additional information.
  *****************************************************************************/
+const DEFAULT_INTERCEPTOR_PRIORITY = 0;
 export default class InterceptorRegistry {
     /**
      * A InterceptorRegistry maintains the definitions for different interceptors that may be invoked on domain objects.
@@ -45,7 +46,6 @@ export default class InterceptorRegistry {
      * @memberof module:openmct.InterceptorRegistry#
      */
     addInterceptor(interceptorDef) {
-        //TODO: sort by priority
         this.interceptors.push(interceptorDef);
     }
 
@@ -56,10 +56,18 @@ export default class InterceptorRegistry {
      * @memberof module:openmct.InterceptorRegistry#
      */
     getInterceptors(identifier, object) {
+
+        function byPriority(interceptorA, interceptorB) {
+            let priorityA = interceptorA.priority ?? DEFAULT_INTERCEPTOR_PRIORITY;
+            let priorityB = interceptorB.priority ?? DEFAULT_INTERCEPTOR_PRIORITY;
+
+            return priorityB - priorityA;
+        }
+
         return this.interceptors.filter(interceptor => {
             return typeof interceptor.appliesTo === 'function'
                 && interceptor.appliesTo(identifier, object);
-        });
+        }).sort(byPriority);
     }
 
 }

src/api/objects/MutableDomainObject.js

@@ -75,11 +75,7 @@ class MutableDomainObject {
         return eventOff;
     }
     $set(path, value) {
-        _.set(this, path, value);
-
-        if (path !== 'persisted' && path !== 'modified') {
-            _.set(this, 'modified', Date.now());
-        }
+        MutableDomainObject.mutateObject(this, path, value);
 
         //Emit secret synchronization event first, so that all objects are in sync before subsequent events fired.
         this._globalEventEmitter.emit(qualifiedEventName(this, '$_synchronize_model'), this);
@@ -136,8 +132,11 @@ class MutableDomainObject {
     }
 
     static mutateObject(object, path, value) {
+        if (path !== 'persisted') {
+            _.set(object, 'modified', Date.now());
+        }
+
         _.set(object, path, value);
-        _.set(object, 'modified', Date.now());
     }
 }
 

src/api/objects/ObjectAPI.js

@@ -33,7 +33,7 @@ import InMemorySearchProvider from './InMemorySearchProvider';
 /**
  * Uniquely identifies a domain object.
  *
- * @typedef Identifier
+ * @typedef {object} Identifier
  * @property {string} namespace the namespace to/from which this domain
  *           object should be loaded/stored.
  * @property {string} key a unique identifier for the domain object
@@ -50,8 +50,8 @@ import InMemorySearchProvider from './InMemorySearchProvider';
  * A few common properties are defined for domain objects. Beyond these,
  * individual types of domain objects may add more as they see fit.
  *
- * @typedef DomainObject
- * @property {module:openmct.ObjectAPI~Identifier} identifier a key/namespace pair which
+ * @typedef {object} DomainObject
+ * @property {Identifier} identifier a key/namespace pair which
  *           uniquely identifies this domain object
  * @property {string} type the type of domain object
  * @property {string} name the human-readable name for this domain object
@@ -59,11 +59,20 @@ import InMemorySearchProvider from './InMemorySearchProvider';
  *           object
  * @property {number} [modified] the time, in milliseconds since the UNIX
  *           epoch, at which this domain object was last modified
- * @property {module:openmct.ObjectAPI~Identifier[]} [composition] if
+ * @property {Identifier[]} [composition] if
  *           present, this will be used by the default composition provider
  *           to load domain objects
- * @memberof module:openmct
+ * @memberof module:openmct.ObjectAPI~
  */
+
+/**
+  * @readonly
+  * @enum {string} SEARCH_TYPES
+  * @property {string} OBJECTS Search for objects
+  * @property {string} ANNOTATIONS Search for annotations
+  * @property {string} TAGS Search for tags
+  */
+
 /**
  * Utilities for loading, saving, and manipulating domain objects.
  * @interface ObjectAPI
@@ -76,7 +85,6 @@ export default class ObjectAPI {
         this.SEARCH_TYPES = Object.freeze({
             OBJECTS: 'OBJECTS',
             ANNOTATIONS: 'ANNOTATIONS',
-            NOTEBOOK_ANNOTATIONS: 'NOTEBOOK_ANNOTATIONS',
             TAGS: 'TAGS'
         });
         this.eventEmitter = new EventEmitter();
@@ -88,7 +96,7 @@ export default class ObjectAPI {
         this.cache = {};
         this.interceptorRegistry = new InterceptorRegistry();
 
-        this.SYNCHRONIZED_OBJECT_TYPES = ['notebook', 'plan', 'annotation'];
+        this.SYNCHRONIZED_OBJECT_TYPES = ['notebook', 'restricted-notebook', 'plan', 'annotation'];
 
         this.errors = {
             Conflict: ConflictError
@@ -179,7 +187,7 @@ export default class ObjectAPI {
      */
 
     /**
-     * Get a domain object.
+     * Force remote get for a domain object. Don't return dirty objects.
      *
      * @method get
      * @memberof module:openmct.ObjectProvider#
@@ -188,24 +196,8 @@ export default class ObjectAPI {
      * @returns {Promise} a promise which will resolve when the domain object
      *          has been saved, or be rejected if it cannot be saved
      */
-
-    get(identifier, abortSignal) {
-        let keystring = this.makeKeyString(identifier);
-
-        if (this.cache[keystring] !== undefined) {
-            return this.cache[keystring];
-        }
-
-        identifier = utils.parseKeyString(identifier);
-        let dirtyObject;
-        if (this.isTransactionActive()) {
-            dirtyObject = this.transaction.getDirtyObject(identifier);
-        }
-
-        if (dirtyObject) {
-            return Promise.resolve(dirtyObject);
-        }
-
+    remoteGet(identifier, abortSignal) {
+        const keystring = this.makeKeyString(identifier);
         const provider = this.getProvider(identifier);
 
         if (!provider) {
@@ -218,12 +210,11 @@ export default class ObjectAPI {
 
         let objectPromise = provider.get(identifier, abortSignal).then(result => {
             delete this.cache[keystring];
-
             result = this.applyGetInterceptors(identifier, result);
             if (result.isMutable) {
                 result.$refresh(result);
             } else {
-                let mutableDomainObject = this._toMutable(result);
+                let mutableDomainObject = this.toMutable(result);
                 mutableDomainObject.$refresh(result);
             }
 
@@ -243,6 +234,36 @@ export default class ObjectAPI {
         return objectPromise;
     }
 
+    /**
+     * Get a domain object.
+     *
+     * @method get
+     * @memberof module:openmct.ObjectProvider#
+     * @param {string} key the key for the domain object to load
+     * @param {AbortController.signal} abortSignal (optional) signal to abort fetch requests
+     * @returns {Promise} a promise which will resolve when the domain object
+     *          has been saved, or be rejected if it cannot be saved
+     */
+    get(identifier, abortSignal) {
+        const keystring = this.makeKeyString(identifier);
+
+        if (this.cache[keystring] !== undefined) {
+            return this.cache[keystring];
+        }
+
+        identifier = utils.parseKeyString(identifier);
+
+        if (this.isTransactionActive()) {
+            let dirtyObject = this.transaction.getDirtyObject(identifier);
+
+            if (dirtyObject) {
+                return Promise.resolve(dirtyObject);
+            }
+        }
+
+        return this.remoteGet(identifier, abortSignal);
+    }
+
     /**
      * Search for domain objects.
      *
@@ -300,7 +321,7 @@ export default class ObjectAPI {
         }
 
         return this.get(identifier).then((object) => {
-            return this._toMutable(object);
+            return this.toMutable(object);
         });
     }
 
@@ -347,44 +368,67 @@ export default class ObjectAPI {
      * @returns {Promise} a promise which will resolve when the domain object
      *          has been saved, or be rejected if it cannot be saved
      */
-    save(domainObject) {
-        let provider = this.getProvider(domainObject.identifier);
-        let savedResolve;
-        let savedReject;
+    async save(domainObject) {
+        console.log('save', JSON.parse(JSON.stringify(domainObject)));
+        const provider = this.getProvider(domainObject.identifier);
         let result;
+        let lastPersistedTime;
 
         if (!this.isPersistable(domainObject.identifier)) {
             result = Promise.reject('Object provider does not support saving');
         } else if (this.#hasAlreadyBeenPersisted(domainObject)) {
             result = Promise.resolve(true);
         } else {
-            const persistedTime = Date.now();
-            if (domainObject.persisted === undefined) {
-                result = new Promise((resolve, reject) => {
-                    savedResolve = resolve;
-                    savedReject = reject;
-                });
-                domainObject.persisted = persistedTime;
-                const newObjectPromise = provider.create(domainObject);
-                if (newObjectPromise) {
-                    newObjectPromise.then(response => {
-                        this.mutate(domainObject, 'persisted', persistedTime);
-                        savedResolve(response);
-                    }).catch((error) => {
-                        savedReject(error);
-                    });
-                } else {
-                    result = Promise.reject(`[ObjectAPI][save] Object provider returned ${newObjectPromise} when creating new object.`);
-                }
+            const username = await this.#getCurrentUsername();
+            const isNewObject = domainObject.persisted === undefined;
+            let savedResolve;
+            let savedReject;
+            let savedObjectPromise;
+
+            result = new Promise((resolve, reject) => {
+                savedResolve = resolve;
+                savedReject = reject;
+            });
+
+            this.#mutate(domainObject, 'modifiedBy', username);
+
+            if (isNewObject) {
+                this.#mutate(domainObject, 'createdBy', username);
+
+                const createdTime = Date.now();
+                this.#mutate(domainObject, 'created', createdTime);
+
+                const persistedTime = Date.now();
+                this.#mutate(domainObject, 'persisted', persistedTime);
+
+                savedObjectPromise = provider.create(domainObject);
             } else {
-                domainObject.persisted = persistedTime;
-                this.mutate(domainObject, 'persisted', persistedTime);
-                result = provider.update(domainObject);
+                lastPersistedTime = domainObject.persisted;
+                const persistedTime = Date.now();
+                this.#mutate(domainObject, 'persisted', persistedTime);
+
+                savedObjectPromise = provider.update(domainObject);
+            }
+
+            if (savedObjectPromise) {
+                savedObjectPromise.then(response => {
+                    savedResolve(response);
+                }).catch((error) => {
+                    if (!isNewObject) {
+                        this.#mutate(domainObject, 'persisted', lastPersistedTime);
+                    }
+
+                    savedReject(error);
+                });
+            } else {
+                result = Promise.reject(`[ObjectAPI][save] Object provider returned ${savedObjectPromise} when ${isNewObject ? 'creating new' : 'updating'} object.`);
             }
         }
 
         return result.catch((error) => {
-            if (error instanceof this.errors.Conflict) {
+            // suppress conflict error notifications for remotely synced items
+            // (possibly just for notebook and restricted-notebook as they have conflic resolution)
+            if (error instanceof this.errors.Conflict && !this.SYNCHRONIZED_OBJECT_TYPES.includes(domainObject.type)) {
                 this.openmct.notifications.error(`Conflict detected while saving ${this.makeKeyString(domainObject.identifier)}`);
             }
 
@@ -392,8 +436,21 @@ export default class ObjectAPI {
         });
     }
 
+    async #getCurrentUsername() {
+        const user = await this.openmct.user.getCurrentUser();
+        let username;
+
+        if (user !== undefined) {
+            username = user.getName();
+        }
+
+        return username;
+    }
+
     /**
      * After entering into edit mode, creates a new instance of Transaction to keep track of changes in Objects
+     *
+     * @returns {Transaction} a new Transaction that was just created
      */
     startTransaction() {
         if (this.isTransactionActive()) {
@@ -401,6 +458,8 @@ export default class ObjectAPI {
         }
 
         this.transaction = new Transaction(this);
+
+        return this.transaction;
     }
 
     /**
@@ -473,14 +532,16 @@ export default class ObjectAPI {
     }
 
     /**
-     * Modify a domain object.
+     * Modify a domain object. Internal to ObjectAPI, won't call save after.
+     * @private
+     *
      * @param {module:openmct.DomainObject} object the object to mutate
      * @param {string} path the property to modify
      * @param {*} value the new value for this property
      * @method mutate
      * @memberof module:openmct.ObjectAPI#
      */
-    mutate(domainObject, path, value) {
+    #mutate(domainObject, path, value) {
         if (!this.supportsMutation(domainObject.identifier)) {
             throw `Error: Attempted to mutate immutable object ${domainObject.name}`;
         }
@@ -490,7 +551,7 @@ export default class ObjectAPI {
         } else {
             //Creating a temporary mutable domain object allows other mutable instances of the
             //object to be kept in sync.
-            let mutableDomainObject = this._toMutable(domainObject);
+            let mutableDomainObject = this.toMutable(domainObject);
 
             //Mutate original object
             MutableDomainObject.mutateObject(domainObject, path, value);
@@ -501,8 +562,21 @@ export default class ObjectAPI {
             //Destroy temporary mutable object
             this.destroyMutable(mutableDomainObject);
         }
+    }
+
+    /**
+     * Modify a domain object and save.
+     * @param {module:openmct.DomainObject} object the object to mutate
+     * @param {string} path the property to modify
+     * @param {*} value the new value for this property
+     * @method mutate
+     * @memberof module:openmct.ObjectAPI#
+     */
+    mutate(domainObject, path, value) {
+        this.#mutate(domainObject, path, value);
 
         if (this.isTransactionActive()) {
+            console.log('objectAPI: mutate', JSON.parse(JSON.stringify(domainObject)), path, value);
             this.transaction.add(domainObject);
         } else {
             this.save(domainObject);
@@ -510,15 +584,19 @@ export default class ObjectAPI {
     }
 
     /**
-     * @private
+     * Create a mutable domain object from an existing domain object
+     * @param {module:openmct.DomainObject} domainObject the object to make mutable
+     * @returns {MutableDomainObject} a mutable domain object that will automatically sync
+     * @method toMutable
+     * @memberof module:openmct.ObjectAPI#
      */
-    _toMutable(object) {
+    toMutable(domainObject) {
         let mutableObject;
 
-        if (object.isMutable) {
-            mutableObject = object;
+        if (domainObject.isMutable) {
+            mutableObject = domainObject;
         } else {
-            mutableObject = MutableDomainObject.createMutable(object, this.eventEmitter);
+            mutableObject = MutableDomainObject.createMutable(domainObject, this.eventEmitter);
 
             // Check if provider supports realtime updates
             let identifier = utils.parseKeyString(mutableObject.identifier);
@@ -526,9 +604,12 @@ export default class ObjectAPI {
 
             if (provider !== undefined
                 && provider.observe !== undefined
-                && this.SYNCHRONIZED_OBJECT_TYPES.includes(object.type)) {
+                && this.SYNCHRONIZED_OBJECT_TYPES.includes(domainObject.type)) {
                 let unobserve = provider.observe(identifier, (updatedModel) => {
-                    if (updatedModel.persisted > mutableObject.modified) {
+                    // modified can sometimes be undefined, so make it 0 in this case
+                    const mutableObjectModification = mutableObject.modified ?? Number.MIN_SAFE_INTEGER;
+
+                    if (updatedModel.persisted > mutableObjectModification) {
                         //Don't replace with a stale model. This can happen on slow connections when multiple mutations happen
                         //in rapid succession and intermediate persistence states are returned by the observe function.
                         updatedModel = this.applyGetInterceptors(identifier, updatedModel);
@@ -582,7 +663,7 @@ export default class ObjectAPI {
         if (domainObject.isMutable) {
             return domainObject.$observe(path, callback);
         } else {
-            let mutable = this._toMutable(domainObject);
+            let mutable = this.toMutable(domainObject);
             mutable.$observe(path, callback);
 
             return () => mutable.$destroy();
@@ -671,12 +752,14 @@ export default class ObjectAPI {
     }
 
     isTransactionActive() {
-        return Boolean(this.transaction && this.openmct.editor.isEditing());
+        return this.transaction !== undefined && this.transaction !== null;
     }
 
     #hasAlreadyBeenPersisted(domainObject) {
+        // modified can sometimes be undefined, so make it 0 in this case
+        const modified = domainObject.modified ?? Number.MIN_SAFE_INTEGER;
         const result = domainObject.persisted !== undefined
-            && domainObject.persisted >= domainObject.modified;
+            && domainObject.persisted >= modified;
 
         return result;
     }

src/api/objects/ObjectAPISpec.js

@@ -8,13 +8,27 @@ describe("The Object API", () => {
     let mockDomainObject;
     const TEST_NAMESPACE = "test-namespace";
     const TEST_KEY = "test-key";
+    const USERNAME = 'Joan Q Public';
     const FIFTEEN_MINUTES = 15 * 60 * 1000;
 
     beforeEach((done) => {
         typeRegistry = jasmine.createSpyObj('typeRegistry', [
             'get'
         ]);
+        const userProvider = {
+            isLoggedIn() {
+                return true;
+            },
+            getCurrentUser() {
+                return Promise.resolve({
+                    getName() {
+                        return USERNAME;
+                    }
+                });
+            }
+        };
         openmct = createOpenMct();
+        openmct.user.setProvider(userProvider);
         objectAPI = openmct.objects;
 
         openmct.editor = {};
@@ -63,19 +77,63 @@ describe("The Object API", () => {
                 mockProvider.update.and.returnValue(Promise.resolve(true));
                 objectAPI.addProvider(TEST_NAMESPACE, mockProvider);
             });
-            it("Calls 'create' on provider if object is new", () => {
-                objectAPI.save(mockDomainObject);
+            it("Adds a 'created' timestamp to new objects", async () => {
+                await objectAPI.save(mockDomainObject);
+                expect(mockDomainObject.created).not.toBeUndefined();
+            });
+            it("Calls 'create' on provider if object is new", async () => {
+                await objectAPI.save(mockDomainObject);
                 expect(mockProvider.create).toHaveBeenCalled();
                 expect(mockProvider.update).not.toHaveBeenCalled();
             });
-            it("Calls 'update' on provider if object is not new", () => {
+            it("Calls 'update' on provider if object is not new", async () => {
                 mockDomainObject.persisted = Date.now() - FIFTEEN_MINUTES;
                 mockDomainObject.modified = Date.now();
 
-                objectAPI.save(mockDomainObject);
+                await objectAPI.save(mockDomainObject);
                 expect(mockProvider.create).not.toHaveBeenCalled();
                 expect(mockProvider.update).toHaveBeenCalled();
             });
+            describe("the persisted timestamp for existing objects", () => {
+                let persistedTimestamp;
+                beforeEach(() => {
+                    persistedTimestamp = Date.now() - FIFTEEN_MINUTES;
+                    mockDomainObject.persisted = persistedTimestamp;
+                    mockDomainObject.modified = Date.now();
+                });
+
+                it("is updated", async () => {
+                    await objectAPI.save(mockDomainObject);
+                    expect(mockDomainObject.persisted).toBeDefined();
+                    expect(mockDomainObject.persisted > persistedTimestamp).toBe(true);
+                });
+                it("is >= modified timestamp", async () => {
+                    await objectAPI.save(mockDomainObject);
+                    expect(mockDomainObject.persisted >= mockDomainObject.modified).toBe(true);
+                });
+            });
+            describe("the persisted timestamp for new objects", () => {
+                it("is updated", async () => {
+                    await objectAPI.save(mockDomainObject);
+                    expect(mockDomainObject.persisted).toBeDefined();
+                });
+                it("is >= modified timestamp", async () => {
+                    await objectAPI.save(mockDomainObject);
+                    expect(mockDomainObject.persisted >= mockDomainObject.modified).toBe(true);
+                });
+            });
+
+            it("Sets the current user for 'createdBy' on new objects", async () => {
+                await objectAPI.save(mockDomainObject);
+                expect(mockDomainObject.createdBy).toBe(USERNAME);
+            });
+            it("Sets the current user for 'modifedBy' on existing objects", async () => {
+                mockDomainObject.persisted = Date.now() - FIFTEEN_MINUTES;
+                mockDomainObject.modified = Date.now();
+
+                await objectAPI.save(mockDomainObject);
+                expect(mockDomainObject.modifiedBy).toBe(USERNAME);
+            });
 
             it("Does not persist if the object is unchanged", () => {
                 mockDomainObject.persisted =
@@ -320,7 +378,7 @@ describe("The Object API", () => {
             beforeEach(function () {
                 // Duplicate object to guarantee we are not sharing object instance, which would invalidate test
                 testObjectDuplicate = JSON.parse(JSON.stringify(testObject));
-                mutableSecondInstance = objectAPI._toMutable(testObjectDuplicate);
+                mutableSecondInstance = objectAPI.toMutable(testObjectDuplicate);
             });
 
             afterEach(() => {

src/api/objects/Transaction.js

@@ -41,6 +41,7 @@ export default class Transaction {
         const save = this.objectAPI.save.bind(this.objectAPI);
 
         Object.values(this.dirtyObjects).forEach(object => {
+            console.log('transaction: commit, objects', object);
             promiseArray.push(this.createDirtyObjectPromise(object, save));
         });
 

src/api/overlays/Overlay.js

@@ -17,6 +17,7 @@ class Overlay extends EventEmitter {
         dismissable = true,
         element,
         onDestroy,
+        onDismiss,
         size
     } = {}) {
         super();
@@ -32,7 +33,7 @@ class Overlay extends EventEmitter {
                 OverlayComponent: OverlayComponent
             },
             provide: {
-                dismiss: this.dismiss.bind(this),
+                dismiss: this.notifyAndDismiss.bind(this),
                 element,
                 buttons,
                 dismissable: this.dismissable
@@ -43,6 +44,10 @@ class Overlay extends EventEmitter {
         if (onDestroy) {
             this.once('destroy', onDestroy);
         }
+
+        if (onDismiss) {
+            this.once('dismiss', onDismiss);
+        }
     }
 
     dismiss() {
@@ -51,6 +56,12 @@ class Overlay extends EventEmitter {
         this.component.$destroy();
     }
 
+    //Ensures that any callers are notified that the overlay is dismissed
+    notifyAndDismiss() {
+        this.emit('dismiss');
+        this.dismiss();
+    }
+
     /**
      * @private
      **/

src/api/overlays/OverlayAPI.js

@@ -55,7 +55,7 @@ class OverlayAPI {
     dismissLastOverlay() {
         let lastOverlay = this.activeOverlays[this.activeOverlays.length - 1];
         if (lastOverlay && lastOverlay.dismissable) {
-            lastOverlay.dismiss();
+            lastOverlay.notifyAndDismiss();
         }
     }
 

src/api/telemetry/TelemetryAPI.js

@@ -27,7 +27,6 @@ import TelemetryMetadataManager from './TelemetryMetadataManager';
 import TelemetryValueFormatter from './TelemetryValueFormatter';
 import DefaultMetadataProvider from './DefaultMetadataProvider';
 import objectUtils from 'objectUtils';
-import _ from 'lodash';
 
 export default class TelemetryAPI {
 
@@ -73,7 +72,7 @@ export default class TelemetryAPI {
      * @returns {boolean} true if the object is a telemetry object.
      */
     isTelemetryObject(domainObject) {
-        return Boolean(this.findMetadataProvider(domainObject));
+        return Boolean(this.#findMetadataProvider(domainObject));
     }
 
     /**
@@ -87,7 +86,7 @@ export default class TelemetryAPI {
      * @memberof module:openmct.TelemetryAPI~TelemetryProvider#
      */
     canProvideTelemetry(domainObject) {
-        return Boolean(this.findSubscriptionProvider(domainObject))
+        return Boolean(this.#findSubscriptionProvider(domainObject))
                 || Boolean(this.findRequestProvider(domainObject));
     }
 
@@ -120,7 +119,7 @@ export default class TelemetryAPI {
     /**
      * @private
      */
-    findSubscriptionProvider() {
+    #findSubscriptionProvider() {
         const args = Array.prototype.slice.apply(arguments);
         function supportsDomainObject(provider) {
             return provider.supportsSubscribe.apply(provider, args);
@@ -130,9 +129,10 @@ export default class TelemetryAPI {
     }
 
     /**
-     * @private
+     * Returns a telemetry request provider that supports
+     * a given domain object and options.
      */
-    findRequestProvider(domainObject) {
+    findRequestProvider() {
         const args = Array.prototype.slice.apply(arguments);
         function supportsDomainObject(provider) {
             return provider.supportsRequest.apply(provider, args);
@@ -144,7 +144,7 @@ export default class TelemetryAPI {
     /**
      * @private
      */
-    findMetadataProvider(domainObject) {
+    #findMetadataProvider(domainObject) {
         return this.metadataProviders.filter(function (p) {
             return p.supportsMetadata(domainObject);
         })[0];
@@ -153,7 +153,7 @@ export default class TelemetryAPI {
     /**
      * @private
      */
-    findLimitEvaluator(domainObject) {
+    #findLimitEvaluator(domainObject) {
         return this.limitProviders.filter(function (p) {
             return p.supportsLimits(domainObject);
         })[0];
@@ -161,6 +161,7 @@ export default class TelemetryAPI {
 
     /**
      * @private
+     * Though used in TelemetryCollection as well
      */
     standardizeRequestOptions(options) {
         if (!Object.prototype.hasOwnProperty.call(options, 'start')) {
@@ -174,6 +175,10 @@ export default class TelemetryAPI {
         if (!Object.prototype.hasOwnProperty.call(options, 'domain')) {
             options.domain = this.openmct.time.timeSystem().key;
         }
+
+        if (!Object.prototype.hasOwnProperty.call(options, 'timeContext')) {
+            options.timeContext = this.openmct.time;
+        }
     }
 
     /**
@@ -241,7 +246,7 @@ export default class TelemetryAPI {
     /**
      * Request historical telemetry for a domain object.
      * The `options` argument allows you to specify filters
-     * (start, end, etc.), sort order, and strategies for retrieving
+     * (start, end, etc.), sort order, time context, and strategies for retrieving
      * telemetry (aggregation, latest available, etc.).
      *
      * @method request
@@ -255,7 +260,7 @@ export default class TelemetryAPI {
      */
     async request(domainObject) {
         if (this.noRequestProviderForAllObjects) {
-            return Promise.resolve([]);
+            return [];
         }
 
         if (arguments.length === 1) {
@@ -273,22 +278,24 @@ export default class TelemetryAPI {
         if (!provider) {
             this.requestAbortControllers.delete(abortController);
 
-            return this.handleMissingRequestProvider(domainObject);
+            return this.#handleMissingRequestProvider(domainObject);
         }
 
         arguments[1] = await this.applyRequestInterceptors(domainObject, arguments[1]);
+        try {
+            const telemetry = await provider.request(...arguments);
 
-        return provider.request.apply(provider, arguments)
-            .catch((rejected) => {
-                if (rejected.name !== 'AbortError') {
-                    this.openmct.notifications.error('Error requesting telemetry data, see console for details');
-                    console.error(rejected);
-                }
+            return telemetry;
+        } catch (error) {
+            if (error.name !== 'AbortError') {
+                this.openmct.notifications.error('Error requesting telemetry data, see console for details');
+                console.error(error);
+            }
 
-                return Promise.reject(rejected);
-            }).finally(() => {
-                this.requestAbortControllers.delete(abortController);
-            });
+            throw new Error(error);
+        } finally {
+            this.requestAbortControllers.delete(abortController);
+        }
     }
 
     /**
@@ -306,7 +313,7 @@ export default class TelemetryAPI {
      *          the subscription
      */
     subscribe(domainObject, callback, options) {
-        const provider = this.findSubscriptionProvider(domainObject);
+        const provider = this.#findSubscriptionProvider(domainObject);
 
         if (!this.subscribeCache) {
             this.subscribeCache = {};
@@ -353,7 +360,7 @@ export default class TelemetryAPI {
      */
     getMetadata(domainObject) {
         if (!this.metadataCache.has(domainObject)) {
-            const metadataProvider = this.findMetadataProvider(domainObject);
+            const metadataProvider = this.#findMetadataProvider(domainObject);
             if (!metadataProvider) {
                 return;
             }
@@ -369,33 +376,6 @@ export default class TelemetryAPI {
         return this.metadataCache.get(domainObject);
     }
 
-    /**
-     * Return an array of valueMetadatas that are common to all supplied
-     * telemetry objects and match the requested hints.
-     *
-     */
-    commonValuesForHints(metadatas, hints) {
-        const options = metadatas.map(function (metadata) {
-            const values = metadata.valuesForHints(hints);
-
-            return _.keyBy(values, 'key');
-        }).reduce(function (a, b) {
-            const results = {};
-            Object.keys(a).forEach(function (key) {
-                if (Object.prototype.hasOwnProperty.call(b, key)) {
-                    results[key] = a[key];
-                }
-            });
-
-            return results;
-        });
-        const sortKeys = hints.map(function (h) {
-            return 'hints.' + h;
-        });
-
-        return _.sortBy(options, sortKeys);
-    }
-
     /**
      * Get a value formatter for a given valueMetadata.
      *
@@ -450,7 +430,7 @@ export default class TelemetryAPI {
      *
      * @returns Promise
      */
-    handleMissingRequestProvider(domainObject) {
+    #handleMissingRequestProvider(domainObject) {
         this.noRequestProviderForAllObjects = this.requestProviders.every(requestProvider => {
             const supportsRequest = requestProvider.supportsRequest.apply(requestProvider, arguments);
             const hasRequestProvider = Object.prototype.hasOwnProperty.call(requestProvider, 'request') && typeof requestProvider.request === 'function';
@@ -540,7 +520,7 @@ export default class TelemetryAPI {
      * @memberof module:openmct.TelemetryAPI~TelemetryProvider#
      */
     getLimitEvaluator(domainObject) {
-        const provider = this.findLimitEvaluator(domainObject);
+        const provider = this.#findLimitEvaluator(domainObject);
         if (!provider) {
             return {
                 evaluate: function () {}
@@ -578,7 +558,7 @@ export default class TelemetryAPI {
      * @memberof module:openmct.TelemetryAPI~TelemetryProvider#
      */
     getLimits(domainObject) {
-        const provider = this.findLimitEvaluator(domainObject);
+        const provider = this.#findLimitEvaluator(domainObject);
         if (!provider || !provider.getLimits) {
             return {
                 limits: function () {

src/api/telemetry/TelemetryAPISpec.js

@@ -23,11 +23,11 @@ import { createOpenMct, resetApplicationState } from 'utils/testing';
 import TelemetryAPI from './TelemetryAPI';
 import TelemetryCollection from './TelemetryCollection';
 
-describe('Telemetry API', function () {
+describe('Telemetry API', () => {
     let openmct;
     let telemetryAPI;
 
-    beforeEach(function () {
+    beforeEach(() => {
         openmct = {
             time: jasmine.createSpyObj('timeAPI', [
                 'timeSystem',
@@ -47,11 +47,11 @@ describe('Telemetry API', function () {
 
     });
 
-    describe('telemetry providers', function () {
+    describe('telemetry providers', () => {
         let telemetryProvider;
         let domainObject;
 
-        beforeEach(function () {
+        beforeEach(() => {
             telemetryProvider = jasmine.createSpyObj('telemetryProvider', [
                 'supportsSubscribe',
                 'subscribe',
@@ -73,19 +73,16 @@ describe('Telemetry API', function () {
             };
         });
 
-        it('provides consistent results without providers', function (done) {
+        it('provides consistent results without providers', async () => {
             const unsubscribe = telemetryAPI.subscribe(domainObject);
 
             expect(unsubscribe).toEqual(jasmine.any(Function));
 
-            telemetryAPI.request(domainObject)
-                .then((data) => {
-                    expect(data).toEqual([]);
-                })
-                .finally(done);
+            const data = await telemetryAPI.request(domainObject);
+            expect(data).toEqual([]);
         });
 
-        it('skips providers that do not match', function (done) {
+        it('skips providers that do not match', async () => {
             telemetryProvider.supportsSubscribe.and.returnValue(false);
             telemetryProvider.supportsRequest.and.returnValue(false);
             telemetryProvider.request.and.returnValue(Promise.resolve([]));
@@ -98,14 +95,13 @@ describe('Telemetry API', function () {
             expect(telemetryProvider.subscribe).not.toHaveBeenCalled();
             expect(unsubscribe).toEqual(jasmine.any(Function));
 
-            telemetryAPI.request(domainObject).then((response) => {
-                expect(telemetryProvider.supportsRequest)
-                    .toHaveBeenCalledWith(domainObject, jasmine.any(Object));
-                expect(telemetryProvider.request).not.toHaveBeenCalled();
-            }).finally(done);
+            await telemetryAPI.request(domainObject);
+            expect(telemetryProvider.supportsRequest)
+                .toHaveBeenCalledWith(domainObject, jasmine.any(Object));
+            expect(telemetryProvider.request).not.toHaveBeenCalled();
         });
 
-        it('sends subscribe calls to matching providers', function () {
+        it('sends subscribe calls to matching providers', () => {
             const unsubFunc = jasmine.createSpy('unsubscribe');
             telemetryProvider.subscribe.and.returnValue(unsubFunc);
             telemetryProvider.supportsSubscribe.and.returnValue(true);
@@ -133,7 +129,7 @@ describe('Telemetry API', function () {
             expect(callback).not.toHaveBeenCalledWith('otherValue');
         });
 
-        it('subscribes once per object', function () {
+        it('subscribes once per object', () => {
             const unsubFunc = jasmine.createSpy('unsubscribe');
             telemetryProvider.subscribe.and.returnValue(unsubFunc);
             telemetryProvider.supportsSubscribe.and.returnValue(true);
@@ -164,7 +160,7 @@ describe('Telemetry API', function () {
             expect(callbacktwo).not.toHaveBeenCalledWith('anotherValue');
         });
 
-        it('only deletes subscription cache when there are no more subscribers', function () {
+        it('only deletes subscription cache when there are no more subscribers', () => {
             const unsubFunc = jasmine.createSpy('unsubscribe');
             telemetryProvider.subscribe.and.returnValue(unsubFunc);
             telemetryProvider.supportsSubscribe.and.returnValue(true);
@@ -187,7 +183,7 @@ describe('Telemetry API', function () {
             unsubscribeThree();
         });
 
-        it('does subscribe/unsubscribe', function () {
+        it('does subscribe/unsubscribe', () => {
             const unsubFunc = jasmine.createSpy('unsubscribe');
             telemetryProvider.subscribe.and.returnValue(unsubFunc);
             telemetryProvider.supportsSubscribe.and.returnValue(true);
@@ -203,7 +199,7 @@ describe('Telemetry API', function () {
             unsubscribe();
         });
 
-        it('subscribes for different object', function () {
+        it('subscribes for different object', () => {
             const unsubFuncs = [];
             const notifiers = [];
             telemetryProvider.supportsSubscribe.and.returnValue(true);
@@ -243,120 +239,120 @@ describe('Telemetry API', function () {
             expect(unsubFuncs[1]).toHaveBeenCalled();
         });
 
-        it('sends requests to matching providers', function (done) {
+        it('sends requests to matching providers', async () => {
             const telemPromise = Promise.resolve([]);
             telemetryProvider.supportsRequest.and.returnValue(true);
             telemetryProvider.request.and.returnValue(telemPromise);
             telemetryAPI.addProvider(telemetryProvider);
 
-            telemetryAPI.request(domainObject).then(() => {
-                expect(telemetryProvider.supportsRequest).toHaveBeenCalledWith(
-                    domainObject,
-                    jasmine.any(Object)
-                );
-                expect(telemetryProvider.request).toHaveBeenCalledWith(
-                    domainObject,
-                    jasmine.any(Object)
-                );
-            }).finally(done);
+            await telemetryAPI.request(domainObject);
+            expect(telemetryProvider.supportsRequest).toHaveBeenCalledWith(
+                domainObject,
+                jasmine.any(Object)
+            );
+            expect(telemetryProvider.request).toHaveBeenCalledWith(
+                domainObject,
+                jasmine.any(Object)
+            );
         });
 
-        it('generates default request options', function (done) {
+        it('generates default request options', async () => {
             telemetryProvider.supportsRequest.and.returnValue(true);
             telemetryProvider.request.and.returnValue(Promise.resolve([]));
             telemetryAPI.addProvider(telemetryProvider);
 
-            telemetryAPI.request(domainObject).then(() => {
-                const { signal } = new AbortController();
-                expect(telemetryProvider.supportsRequest).toHaveBeenCalledWith(
-                    jasmine.any(Object),
-                    {
-                        signal,
-                        start: 0,
-                        end: 1,
-                        domain: 'system'
-                    }
-                );
+            await telemetryAPI.request(domainObject);
+            const { signal } = new AbortController();
+            expect(telemetryProvider.supportsRequest).toHaveBeenCalledWith(
+                jasmine.any(Object),
+                {
+                    signal,
+                    start: 0,
+                    end: 1,
+                    domain: 'system',
+                    timeContext: jasmine.any(Object)
+                }
+            );
 
-                expect(telemetryProvider.request).toHaveBeenCalledWith(
-                    jasmine.any(Object),
-                    {
-                        signal,
-                        start: 0,
-                        end: 1,
-                        domain: 'system'
-                    }
-                );
+            expect(telemetryProvider.request).toHaveBeenCalledWith(
+                jasmine.any(Object),
+                {
+                    signal,
+                    start: 0,
+                    end: 1,
+                    domain: 'system',
+                    timeContext: jasmine.any(Object)
+                }
+            );
 
-                telemetryProvider.supportsRequest.calls.reset();
-                telemetryProvider.request.calls.reset();
+            telemetryProvider.supportsRequest.calls.reset();
+            telemetryProvider.request.calls.reset();
 
-                telemetryAPI.request(domainObject, {}).then(() => {
-                    expect(telemetryProvider.supportsRequest).toHaveBeenCalledWith(
-                        jasmine.any(Object),
-                        {
-                            signal,
-                            start: 0,
-                            end: 1,
-                            domain: 'system'
-                        }
-                    );
-
-                    expect(telemetryProvider.request).toHaveBeenCalledWith(
-                        jasmine.any(Object),
-                        {
-                            signal,
-                            start: 0,
-                            end: 1,
-                            domain: 'system'
-                        }
-                    );
-                });
-            }).finally(done);
+            await telemetryAPI.request(domainObject, {});
+            expect(telemetryProvider.supportsRequest).toHaveBeenCalledWith(
+                jasmine.any(Object),
+                {
+                    signal,
+                    start: 0,
+                    end: 1,
+                    domain: 'system',
+                    timeContext: jasmine.any(Object)
+                }
+            );
 
+            expect(telemetryProvider.request).toHaveBeenCalledWith(
+                jasmine.any(Object),
+                {
+                    signal,
+                    start: 0,
+                    end: 1,
+                    domain: 'system',
+                    timeContext: jasmine.any(Object)
+                }
+            );
         });
 
-        it('do not overwrite existing request options', function (done) {
+        it('do not overwrite existing request options', async () => {
             telemetryProvider.supportsRequest.and.returnValue(true);
             telemetryProvider.request.and.returnValue(Promise.resolve([]));
             telemetryAPI.addProvider(telemetryProvider);
 
-            telemetryAPI.request(domainObject, {
+            await telemetryAPI.request(domainObject, {
                 start: 20,
                 end: 30,
                 domain: 'someDomain'
-            }).then(() => {
-                const { signal } = new AbortController();
-                expect(telemetryProvider.supportsRequest).toHaveBeenCalledWith(
-                    jasmine.any(Object),
-                    {
-                        start: 20,
-                        end: 30,
-                        domain: 'someDomain',
-                        signal
-                    }
-                );
+            });
+            const { signal } = new AbortController();
+            expect(telemetryProvider.supportsRequest).toHaveBeenCalledWith(
+                jasmine.any(Object),
+                {
+                    start: 20,
+                    end: 30,
+                    domain: 'someDomain',
+                    signal,
+                    timeContext: jasmine.any(Object)
+                }
+            );
 
-                expect(telemetryProvider.request).toHaveBeenCalledWith(
-                    jasmine.any(Object),
-                    {
-                        start: 20,
-                        end: 30,
-                        domain: 'someDomain',
-                        signal
-                    }
-                );
-
-            }).finally(done);
+            expect(telemetryProvider.request).toHaveBeenCalledWith(
+                jasmine.any(Object),
+                {
+                    start: 20,
+                    end: 30,
+                    domain: 'someDomain',
+                    signal,
+                    timeContext: jasmine.any(Object)
+                }
+            );
         });
     });
 
-    describe('metadata', function () {
+    describe('metadata', () => {
         let mockMetadata = {};
         let mockObjectType = {
             definition: {}
         };
-        beforeEach(function () {
+        beforeEach(() => {
             telemetryAPI.addProvider({
                 key: 'mockMetadataProvider',
                 supportsMetadata() {
@@ -369,7 +365,7 @@ describe('Telemetry API', function () {
             openmct.types.get.and.returnValue(mockObjectType);
         });
 
-        it('respects explicit priority', function () {
+        it('respects explicit priority', () => {
             mockMetadata.values = [
                 {
                     key: "name",
@@ -408,7 +404,7 @@ describe('Telemetry API', function () {
                 expect(value.hints.priority).toBe(index + 1);
             });
         });
-        it('if no explicit priority, defaults to order defined', function () {
+        it('if no explicit priority, defaults to order defined', () => {
             mockMetadata.values = [
                 {
                     key: "name",
@@ -435,7 +431,7 @@ describe('Telemetry API', function () {
                 expect(value.key).toBe(mockMetadata.values[index].key);
             });
         });
-        it('respects domain priority', function () {
+        it('respects domain priority', () => {
             mockMetadata.values = [
                 {
                     key: "name",
@@ -477,7 +473,7 @@ describe('Telemetry API', function () {
             expect(values[0].key).toBe('timestamp-local');
             expect(values[1].key).toBe('timestamp-utc');
         });
-        it('respects range priority', function () {
+        it('respects range priority', () => {
             mockMetadata.values = [
                 {
                     key: "name",
@@ -519,7 +515,7 @@ describe('Telemetry API', function () {
             expect(values[0].key).toBe('cos');
             expect(values[1].key).toBe('sin');
         });
-        it('respects priority and domain ordering', function () {
+        it('respects priority and domain ordering', () => {
             mockMetadata.values = [
                 {
                     key: "id",
@@ -588,7 +584,7 @@ describe('Telemetry API', function () {
             definition: {}
         };
 
-        beforeEach(function () {
+        beforeEach(() => {
             openmct.telemetry = telemetryAPI;
             telemetryAPI.addProvider({
                 key: 'mockMetadataProvider',
@@ -644,16 +640,14 @@ describe('Telemetery', () => {
         return resetApplicationState(openmct);
     });
 
-    it('should not abort request without navigation', function (done) {
+    it('should not abort request without navigation', async () => {
         telemetryAPI.addProvider(telemetryProvider);
 
-        telemetryAPI.request({}).finally(() => {
-            expect(watchedSignal.aborted).toBe(false);
-            done();
-        });
+        await telemetryAPI.request({});
+        expect(watchedSignal.aborted).toBe(false);
     });
 
-    it('should abort request on navigation', function (done) {
+    it('should abort request on navigation', (done) => {
         telemetryAPI.addProvider(telemetryProvider);
 
         telemetryAPI.request({}).finally(() => {

src/api/time/TimeAPISpec.js

@@ -229,6 +229,25 @@ describe("The Time API", function () {
             expect(api.clock()).toBeUndefined();
         });
 
+        it('Provides a default time context', () => {
+            const timeContext = api.getContextForView([]);
+            expect(timeContext).not.toBe(null);
+        });
+
+        it("Without a clock, is in fixed time mode", () => {
+            const timeContext = api.getContextForView([]);
+            expect(timeContext.isRealTime()).toBe(false);
+        });
+
+        it("Provided a clock, is in real-time mode", () => {
+            const timeContext = api.getContextForView([]);
+            timeContext.clock('mts', {
+                start: 0,
+                end: 1
+            });
+            expect(timeContext.isRealTime()).toBe(true);
+        });
+
     });
 
     it("on tick, observes offsets, and indicates tick in bounds callback", function () {

src/api/time/TimeContext.js

@@ -362,6 +362,18 @@ class TimeContext extends EventEmitter {
         this.boundsVal = newBounds;
         this.emit('bounds', this.boundsVal, true);
     }
+
+    /**
+     * Checks if this time context is in real-time mode or not.
+     * @returns {boolean} true if this context is in real-time mode, false if not
+    */
+    isRealTime() {
+        if (this.clock()) {
+            return true;
+        }
+
+        return false;
+    }
 }
 
 export default TimeContext;

src/plugins/LADTable/components/LADRow.vue

@@ -114,6 +114,8 @@ export default {
         this.formats = this.openmct.telemetry.getFormatMap(this.metadata);
         this.keyString = this.openmct.objects.makeKeyString(this.domainObject.identifier);
 
+        this.timeContext = this.openmct.time.getContextForView(this.objectPath);
+
         this.limitEvaluator = this.openmct
             .telemetry
             .limitEvaluator(this.domainObject);
@@ -134,7 +136,8 @@ export default {
 
         this.telemetryCollection = this.openmct.telemetry.requestCollection(this.domainObject, {
             size: 1,
-            strategy: 'latest'
+            strategy: 'latest',
+            timeContext: this.timeContext
         });
         this.telemetryCollection.on('add', this.setLatestValues);
         this.telemetryCollection.on('clear', this.resetValues);

src/plugins/charts/scatter/ScatterPlotView.vue

@@ -112,11 +112,7 @@ export default {
             }
         },
         removeFromComposition(telemetryObject) {
-            let composition = this.domainObject.composition.filter(id =>
-                !this.openmct.objects.areIdsEqual(id, telemetryObject.identifier)
-            );
-
-            this.openmct.objects.mutate(this.domainObject, 'composition', composition);
+            this.composition.remove(telemetryObject);
         },
         addTelemetryObject(telemetryObject) {
             // grab information we need from the added telmetry object

src/plugins/charts/scatter/inspector/PlotOptionsBrowse.vue

@@ -104,10 +104,14 @@ export default {
             this.$set(this.plotSeries, this.plotSeries.length, series);
             this.setAxesLabels();
         },
-        removeSeries(series) {
-            const index = this.plotSeries.findIndex(plotSeries => this.openmct.objects.areIdsEqual(series.identifier, plotSeries.identifier));
-            if (index !== undefined) {
-                this.$delete(this.plotSeries, index);
+        removeSeries(seriesKey) {
+            const seriesIndex = this.plotSeries.findIndex(
+                plotSeries => this.openmct.objects.areIdsEqual(seriesKey, plotSeries.identifier)
+            );
+
+            const foundSeries = seriesIndex > -1;
+            if (foundSeries) {
+                this.$delete(this.plotSeries, seriesIndex);
                 this.setAxesLabels();
             }
         },

src/plugins/clock/plugin.js

@@ -68,6 +68,7 @@ export default function ClockPlugin(options) {
                     ]
                 },
                 {
+                    ariaLabel: "12 or 24 hour clock",
                     control: 'select',
                     options: [
                         {