fix lint issues

* CSS and markup refactoring to support addition of 'suspect' telemetry

- Significant refactoring of CSS classing: `is-missing` is now
`is-status--missing` and `is-missing__indicator` is now simply
`is-status__indicator`, allowing the wrapping `is-missing--*` class to
control what is displayed;
- New SCSS mixin @isStatus, and changes to mixin @isMissing to support
new `is-status--suspect` class;
- Changed titling for missing objects from 'This item is missing' to
'This item is missing or suspect'. **IMPORTANT NOTE** This is temporary
and should be replaced with a more robust approach to titling that
allows title strings to be defined in configuration and dynamically
applied;
- Refactored computed property `statusClass` across multiple components
to return an empty string when status is undefined - this was
previously erroneously returning `is-undefined` in that circumstance;
- Removed commented code;

* CSS and markup refactoring to support addition of 'suspect' telemetry

- Refinements to broaden capability of `is-status*` mixin;

platform/commonUI/general/res/templates/label.html

@@ -20,12 +20,12 @@
  at runtime from the About dialog for additional information.
 -->
 <div class="c-object-label"
-     ng-class="{ 'is-missing': model.status === 'missing' }"
+     ng-class="{ 'is-status--missing': model.status === 'missing' }"
 >
     <div class="c-object-label__type-icon {{type.getCssClass()}}"
          ng-class="{ 'l-icon-link':location.isLink() }"
     >
-        <span class="is-missing__indicator" title="This item is missing"></span>
+        <span class="is-status__indicator" title="This item is missing or suspect"></span>
     </div>
     <div class='c-object-label__name'>{{model.name}}</div>
 </div>

src/MCT.js

@@ -246,6 +246,8 @@ define([
 
         this.actions = new api.ActionsAPI(this);
 
+        this.status = new api.StatusAPI(this);
+
         this.router = new ApplicationRouter();
 
         this.branding = BrandingAPI.default;

src/api/actions/ActionsAPISpec.js

@@ -21,17 +21,14 @@
  *****************************************************************************/
 
 import ActionsAPI from './ActionsAPI';
-import ActionsCollection from './ActionCollection';
 import { createOpenMct, resetApplicationState } from '../../utils/testing';
 
 describe('The Actions API', () => {
     let openmct;
     let actionsAPI;
     let mockAction;
-    let invoked;
     let mockObjectPath;
     let mockViewContext1;
-    let mockViewContext2;
 
     beforeEach(() => {
         openmct = createOpenMct();
@@ -46,6 +43,7 @@ describe('The Actions API', () => {
             appliesTo: (objectPath, view = {}) => {
                 if (view.getViewContext) {
                     let viewContext = view.getViewContext();
+
                     return viewContext.onlyAppliesToTestCase;
                 } else if (objectPath.length) {
                     return objectPath[0].type === 'fake-folder';
@@ -54,7 +52,6 @@ describe('The Actions API', () => {
                 return false;
             },
             invoke: () => {
-                invoked = true;
             }
         };
         mockObjectPath = [
@@ -83,13 +80,6 @@ describe('The Actions API', () => {
                 };
             }
         };
-        mockViewContext2 = {
-            getViewContext:() => {
-                return {
-                    onlyAppliesToTestCase: true
-                };
-            }
-        };
     });
 
     afterEach(() => {
@@ -99,7 +89,7 @@ describe('The Actions API', () => {
     describe("register method", () => {
         it("adds action to ActionsAPI", () => {
             actionsAPI.register(mockAction);
-            
+
             let action = actionsAPI.get(mockObjectPath, mockViewContext1)[mockAction.key];
 
             expect(action.key).toEqual(mockAction.key);

src/api/api.js

@@ -30,8 +30,8 @@ define([
     './notifications/NotificationAPI',
     './Editor',
     './menu/MenuAPI',
-    './actions/ActionsAPI'
-
+    './actions/ActionsAPI',
+    './status/StatusAPI'
 ], function (
     TimeAPI,
     ObjectAPI,
@@ -42,7 +42,8 @@ define([
     NotificationAPI,
     EditorAPI,
     MenuAPI,
-    ActionsAPI
+    ActionsAPI,
+    StatusAPI
 ) {
     return {
         TimeAPI: TimeAPI,
@@ -54,6 +55,7 @@ define([
         NotificationAPI: NotificationAPI.default,
         EditorAPI: EditorAPI,
         MenuAPI: MenuAPI.default,
-        ActionsAPI: ActionsAPI.default
+        ActionsAPI: ActionsAPI.default,
+        StatusAPI: StatusAPI.default
     };
 });

src/api/status/StatusAPI.js

@@ -0,0 +1,67 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2020, 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 EventEmitter from 'EventEmitter';
+
+export default class StatusAPI extends EventEmitter {
+    constructor(openmct) {
+        super();
+
+        this._openmct = openmct;
+        this._statusCache = {};
+
+        this.get = this.get.bind(this);
+        this.set = this.set.bind(this);
+        this.observe = this.observe.bind(this);
+    }
+
+    get(identifier) {
+        let keyString = this._openmct.objects.makeKeyString(identifier);
+
+        return this._statusCache[keyString];
+    }
+
+    set(identifier, value) {
+        let keyString = this._openmct.objects.makeKeyString(identifier);
+
+        this._statusCache[keyString] = value;
+        this.emit(keyString, value);
+    }
+
+    delete(identifier) {
+        let keyString = this._openmct.objects.makeKeyString(identifier);
+
+        this._statusCache[keyString] = undefined;
+        this.emit(keyString, undefined);
+        delete this._statusCache[keyString];
+    }
+
+    observe(identifier, callback) {
+        let key = this._openmct.objects.makeKeyString(identifier);
+
+        this.on(key, callback);
+
+        return () => {
+            this.off(key, callback);
+        };
+    }
+}

src/api/status/StatusAPISpec.js

@@ -0,0 +1,85 @@
+import StatusAPI from './StatusAPI.js';
+import { createOpenMct, resetApplicationState } from '../../utils/testing';
+
+describe("The Status API", () => {
+    let statusAPI;
+    let openmct;
+    let identifier;
+    let status;
+    let status2;
+    let callback;
+
+    beforeEach(() => {
+        openmct = createOpenMct();
+        statusAPI = new StatusAPI(openmct);
+        identifier = {
+            namespace: "test-namespace",
+            key: "test-key"
+        };
+        status = "test-status";
+        status2 = 'test-status-deux';
+        callback = jasmine.createSpy('callback', (statusUpdate) => statusUpdate);
+    });
+
+    afterEach(() => {
+        resetApplicationState(openmct);
+    });
+
+    describe("set function", () => {
+        it("sets status for identifier", () => {
+            statusAPI.set(identifier, status);
+
+            let resultingStatus = statusAPI.get(identifier);
+
+            expect(resultingStatus).toEqual(status);
+        });
+    });
+
+    describe("get function", () => {
+        it("returns status for identifier", () => {
+            statusAPI.set(identifier, status2);
+
+            let resultingStatus = statusAPI.get(identifier);
+
+            expect(resultingStatus).toEqual(status2);
+        });
+    });
+
+    describe("delete function", () => {
+        it("deletes status for identifier", () => {
+            statusAPI.set(identifier, status);
+
+            let resultingStatus = statusAPI.get(identifier);
+            expect(resultingStatus).toEqual(status);
+
+            statusAPI.delete(identifier);
+            resultingStatus = statusAPI.get(identifier);
+
+            expect(resultingStatus).toBeUndefined();
+        });
+    });
+
+    describe("observe function", () => {
+
+        it("allows callbacks to be attached to status set and delete events", () => {
+            let unsubscribe = statusAPI.observe(identifier, callback);
+            statusAPI.set(identifier, status);
+
+            expect(callback).toHaveBeenCalledWith(status);
+
+            statusAPI.delete(identifier);
+
+            expect(callback).toHaveBeenCalledWith(undefined);
+            unsubscribe();
+        });
+
+        it("returns a unsubscribe function", () => {
+            let unsubscribe = statusAPI.observe(identifier, callback);
+            unsubscribe();
+
+            statusAPI.set(identifier, status);
+
+            expect(callback).toHaveBeenCalledTimes(0);
+        });
+    });
+});

src/plugins/displayLayout/components/TelemetryView.vue

@@ -30,18 +30,15 @@
 >
     <div
         v-if="domainObject"
-        class="u-style-receiver c-telemetry-view"
-        :class="{
-            styleClass,
-            'is-missing': domainObject.status === 'missing'
-        }"
+        class="c-telemetry-view"
+        :class="[statusClass]"
         :style="styleObject"
         :data-font-size="item.fontSize"
         :data-font="item.font"
         @contextmenu.prevent="showContextMenu"
     >
-        <div class="is-missing__indicator"
-             title="This item is missing"
+        <div class="is-status__indicator"
+             title="This item is missing or suspect"
         ></div>
         <div
             v-if="showLabel"
@@ -134,10 +131,14 @@ export default {
             datum: undefined,
             domainObject: undefined,
             formats: undefined,
-            viewKey: `alphanumeric-format-${Math.random()}`
+            viewKey: `alphanumeric-format-${Math.random()}`,
+            status: ''
         };
     },
     computed: {
+        statusClass() {
+            return (this.status) ? `is-status--${this.status}` : '';
+        },
         showLabel() {
             let displayMode = this.item.displayMode;
 
@@ -215,9 +216,13 @@ export default {
         this.openmct.objects.get(this.item.identifier)
             .then(this.setObject);
         this.openmct.time.on("bounds", this.refreshData);
+
+        this.status = this.openmct.status.get(this.item.identifier);
+        this.removeStatusListener = this.openmct.status.observe(this.item.identifier, this.setStatus);
     },
     destroyed() {
         this.removeSubscription();
+        this.removeStatusListener();
 
         if (this.removeSelectable) {
             this.removeSelectable();
@@ -339,6 +344,9 @@ export default {
         async showContextMenu(event) {
             const contextMenuActions = await this.getContextMenuActions();
             this.openmct.menus.showMenu(event.x, event.y, contextMenuActions);
+        },
+        setStatus(status) {
+            this.status = status;
         }
     }
 };

src/plugins/displayLayout/components/telemetry-view.scss

@@ -29,12 +29,12 @@
 
     @include isMissing($absPos: true);
 
-    .is-missing__indicator {
+    .is-status__indicator {
         top: 0;
         left: 0;
     }
 
-    &.is-missing {
+    &.is-status--missing {
         border: $borderMissing;
     }
 }

src/plugins/folderView/components/GridItem.vue

@@ -1,11 +1,10 @@
 <template>
 <a
     class="l-grid-view__item c-grid-item"
-    :class="{
+    :class="[{
         'is-alias': item.isAlias === true,
-        'is-missing': item.model.status === 'missing',
         'c-grid-item--unknown': item.type.cssClass === undefined || item.type.cssClass.indexOf('unknown') !== -1
-    }"
+    }, statusClass]"
     :href="objectLink"
 >
     <div
@@ -27,8 +26,8 @@
         </div>
     </div>
     <div class="c-grid-item__controls">
-        <div class="is-missing__indicator"
-             title="This item is missing"
+        <div class="is-status__indicator"
+             title="This item is missing or suspect"
         ></div>
         <div
             class="icon-people"
@@ -46,9 +45,10 @@
 <script>
 import contextMenuGesture from '../../../ui/mixins/context-menu-gesture';
 import objectLink from '../../../ui/mixins/object-link';
+import statusListener from './status-listener';
 
 export default {
-    mixins: [contextMenuGesture, objectLink],
+    mixins: [contextMenuGesture, objectLink, statusListener],
     props: {
         item: {
             type: Object,

src/plugins/folderView/components/ListItem.vue

@@ -8,15 +8,15 @@
         <a
             ref="objectLink"
             class="c-object-label"
-            :class="{ 'is-missing': item.model.status === 'missing' }"
+            :class="[statusClass]"
             :href="objectLink"
         >
             <div
                 class="c-object-label__type-icon c-list-item__name__type-icon"
                 :class="item.type.cssClass"
             >
-                <span class="is-missing__indicator"
-                      title="This item is missing"
+                <span class="is-status__indicator"
+                      title="This item is missing or suspect"
                 ></span>
             </div>
             <div class="c-object-label__name c-list-item__name__name">{{ item.model.name }}</div>
@@ -39,9 +39,10 @@
 import moment from 'moment';
 import contextMenuGesture from '../../../ui/mixins/context-menu-gesture';
 import objectLink from '../../../ui/mixins/object-link';
+import statusListener from './status-listener';
 
 export default {
-    mixins: [contextMenuGesture, objectLink],
+    mixins: [contextMenuGesture, objectLink, statusListener],
     props: {
         item: {
             type: Object,

src/plugins/folderView/components/grid-view.scss

@@ -43,7 +43,7 @@
         }
     }
 
-    &.is-missing {
+    &.is-status--missing {
         @include isMissing();
 
         [class*='__type-icon'],

src/plugins/folderView/components/status-listener.js

@@ -0,0 +1,33 @@
+export default {
+    inject: ['openmct'],
+    props: {
+        item: {
+            type: Object,
+            required: true
+        }
+    },
+    computed: {
+        statusClass() {
+            return (this.status) ? `is-status--${this.status}` : '';
+        }
+    },
+    data() {
+        return {
+            status: ''
+        };
+    },
+    methods: {
+        setStatus(status) {
+            this.status = status;
+        }
+    },
+    mounted() {
+        let identifier = this.item.model.identifier;
+
+        this.status = this.openmct.status.get(identifier);
+        this.removeStatusListener = this.openmct.status.observe(identifier, this.setStatus);
+    },
+    destroyed() {
+        this.removeStatusListener();
+    }
+};

src/plugins/notebook/components/Notebook.vue

@@ -111,7 +111,7 @@ import Search from '@/ui/components/search.vue';
 import SearchResults from './SearchResults.vue';
 import Sidebar from './Sidebar.vue';
 import { clearDefaultNotebook, getDefaultNotebook, setDefaultNotebook, setDefaultNotebookSection, setDefaultNotebookPage } from '../utils/notebook-storage';
-import { DEFAULT_CLASS, addNotebookEntry, createNewEmbed, getNotebookEntries } from '../utils/notebook-entries';
+import { addNotebookEntry, createNewEmbed, getNotebookEntries } from '../utils/notebook-entries';
 import objectUtils from 'objectUtils';
 
 import { throttle } from 'lodash';
@@ -416,14 +416,7 @@ export default {
                 return;
             }
 
-            const classList = domainObject.classList || [];
-            const index = classList.indexOf(DEFAULT_CLASS);
-            if (!classList.length || index < 0) {
-                return;
-            }
-
-            classList.splice(index, 1);
-            this.openmct.objects.mutate(domainObject, 'classList', classList);
+            this.openmct.status.delete(domainObject.identifier);
         },
         searchItem(input) {
             this.search = input;

src/plugins/notebook/components/NotebookMenuSwitcher.vue

@@ -50,6 +50,7 @@ export default {
     },
     mounted() {
         this.notebookSnapshot = new Snapshot(this.openmct);
+        this.setDefaultNotebookStatus();
     },
     methods: {
         showMenu(event) {
@@ -105,6 +106,15 @@ export default {
 
                 this.notebookSnapshot.capture(snapshotMeta, notebook.type, element);
             });
+        },
+        setDefaultNotebookStatus() {
+            let defaultNotebookObject = getDefaultNotebook();
+
+            if (defaultNotebookObject && defaultNotebookObject.notebookMeta) {
+                let notebookIdentifier = defaultNotebookObject.notebookMeta.identifier;
+
+                this.openmct.status.set(notebookIdentifier, 'notebook-default');
+            }
         }
     }
 };

src/plugins/notebook/utils/notebook-entries.js

@@ -1,6 +1,6 @@
 import objectLink from '../../../ui/mixins/object-link';
 
-export const DEFAULT_CLASS = 'is-notebook-default';
+export const DEFAULT_CLASS = 'notebook-default';
 const TIME_BOUNDS = {
     START_BOUND: 'tc.startBound',
     END_BOUND: 'tc.endBound',
@@ -129,7 +129,7 @@ export function addNotebookEntry(openmct, domainObject, notebookStorage, embed =
         embeds
     });
 
-    addDefaultClass(domainObject);
+    addDefaultClass(domainObject, openmct);
     openmct.objects.mutate(domainObject, 'configuration.entries', entries);
 
     return id;
@@ -199,11 +199,6 @@ export function deleteNotebookEntries(openmct, domainObject, selectedSection, se
     openmct.objects.mutate(domainObject, 'configuration.entries', entries);
 }
 
-function addDefaultClass(domainObject) {
-    const classList = domainObject.classList || [];
-    if (classList.includes(DEFAULT_CLASS)) {
-        return;
-    }
-
-    classList.push(DEFAULT_CLASS);
+function addDefaultClass(domainObject, openmct) {
+    openmct.status.set(domainObject.identifier, DEFAULT_CLASS);
 }

src/plugins/plot/res/templates/mct-plot.html

@@ -40,7 +40,7 @@
                 <div class="c-state-indicator__alert-cursor-lock icon-cursor-lock" title="Cursor is point locked. Click anywhere in the plot to unlock."></div>
                 <div class="plot-legend-item"
                      ng-class="{
-                        'is-missing': series.domainObject.status === 'missing'
+                        'is-status--missing': series.domainObject.status === 'missing'
                     }"
                      ng-repeat="series in series track by $index"
                 >
@@ -48,7 +48,7 @@
                         <span class="plot-series-color-swatch"
                               ng-style="{ 'background-color': series.get('color').asHexString() }">
                         </span>
-                        <span class="is-missing__indicator" title="This item is missing"></span>
+                        <span class="is-status__indicator" title="This item is missing or suspect"></span>
                         <span class="plot-series-name">{{ series.nameWithUnit() }}</span>
                     </div>
                     <div class="plot-series-value hover-value-enabled value-to-display-{{ legend.get('valueToShowWhenCollapsed') }} {{ series.closest.mctLimitState.cssClass }}"
@@ -95,14 +95,14 @@
                     <tr ng-repeat="series in series"
                         class="plot-legend-item"
                         ng-class="{
-                            'is-missing': series.domainObject.status === 'missing'
+                            'is-status--missing': series.domainObject.status === 'missing'
                         }"
                     >
                         <td class="plot-series-swatch-and-name">
                             <span class="plot-series-color-swatch"
                                   ng-style="{ 'background-color': series.get('color').asHexString() }">
                             </span>
-                            <span class="is-missing__indicator" title="This item is missing"></span>
+                            <span class="is-status__indicator" title="This item is missing or suspect"></span>
                             <span class="plot-series-name">{{ series.get('name') }}</span>
                         </td>
 

src/plugins/tabs/components/tabs.vue

@@ -29,13 +29,13 @@
             @click="showTab(tab, index)"
         >
             <div class="c-tabs-view__tab__label c-object-label"
-                 :class="{'is-missing': tab.domainObject.status === 'missing'}"
+                 :class="[tab.status ? `is-${tab.status}` : '']"
             >
                 <div class="c-object-label__type-icon"
                      :class="tab.type.definition.cssClass"
                 >
-                    <span class="is-missing__indicator"
-                          title="This item is missing"
+                    <span class="is-status__indicator"
+                          title="This item is missing or suspect"
                     ></span>
                 </div>
                 <span class="c-button__label c-object-label__name">{{ tab.domainObject.name }}</span>
@@ -192,8 +192,10 @@ export default {
         },
         addItem(domainObject) {
             let type = this.openmct.types.get(domainObject.type) || unknownObjectType;
+            let status = this.openmct.status.get(domainObject.identifier);
             let tabItem = {
                 domainObject,
+                status,
                 type: type,
                 key: this.openmct.objects.makeKeyString(domainObject.identifier)
             };

src/styles/_legacy-plots.scss

@@ -59,12 +59,12 @@ mct-plot {
     }
 
     /*********************** MISSING ITEM INDICATORS */
-    .is-missing__indicator {
+    .is-status__indicator {
         display: none;
     }
-    .is-missing {
+    .is-status--missing {
         @include isMissing();
-        .is-missing__indicator {
+        .is-status__indicator {
             font-size: 0.8em;
         }
     }

src/styles/_mixins.scss

@@ -129,31 +129,44 @@
     }
 }
 
-@mixin isMissing($absPos: false) {
+@mixin isStatus($absPos: false) {
+    // Supports CSS classing as follows:
+    // is-status--missing, is-status--suspect, etc.
     // Common styles to be applied to tree items, object labels, grid and list item views
-    //opacity: 0.7;
-    //pointer-events: none; // Don't think we can do this, as disables title hover on icon element
 
-    .is-missing__indicator {
+    .is-status__indicator {
         display: none ;
         text-shadow: $colorBodyBg 0 0 2px;
-        color: $colorAlert;
         font-family: symbolsfont;
 
-        &:before {
-            content: $glyph-icon-alert-triangle;
+        &[class^='is-status'] .is-status__indicator,
+        [class^='is-status'] .is-status__indicator {
+            display: block !important;
         }
-    }
 
-    @if $absPos {
-        .is-missing__indicator {
+        @if $absPos {
             position: absolute;
             z-index: 3;
         }
     }
+}
 
-    &.is-missing .is-missing__indicator,
-    .is-missing .is-missing__indicator { display: block !important; }
+@mixin isMissing($absPos: false) {
+    @include isStatus($absPos);
+
+    .is-status__indicator:before {
+        color: $colorAlert;
+        content: $glyph-icon-alert-triangle;
+    }
+}
+
+@mixin isSuspect($absPos: false) {
+    @include isStatus($absPos);
+
+    .is-status__indicator:before {
+        color: $colorWarningLo;
+        content: $glyph-icon-alert-rect;
+    }
 }
 
 @mixin bgDiagonalStripes($c: yellow, $a: 0.1, $d: 40px) {

src/ui/components/ObjectFrame.vue

@@ -35,16 +35,13 @@
         class="c-so-view__header"
     >
         <div class="c-object-label"
-             :class="{
-                 classList,
-                 'is-missing': domainObject.status === 'missing'
-             }"
+             :class="[ statusClass ]"
         >
             <div class="c-object-label__type-icon"
                  :class="cssClass"
             >
-                <span class="is-missing__indicator"
-                      title="This item is missing"
+                <span class="is-status__indicator"
+                      title="This item is missing or suspect"
                 ></span>
             </div>
             <div class="c-object-label__name">
@@ -88,8 +85,8 @@
         </div>
     </div>
 
-    <div class="is-missing__indicator"
-         title="This item is missing"
+    <div class="is-status__indicator"
+         title="This item is missing or suspect"
     ></div>
     <object-view
         ref="objectView"
@@ -160,20 +157,22 @@ export default {
             cssClass,
             complexContent,
             viewProvider,
-            statusBarItems
+            statusBarItems,
+            status: ''
         };
     },
     computed: {
-        classList() {
-            const classList = this.domainObject.classList;
-            if (!classList || !classList.length) {
-                return '';
-            }
-
-            return classList.join(' ');
+        statusClass() {
+            return (this.status) ? `is-status--${this.status}` : '';
         }
     },
+    mounted() {
+        this.status = this.openmct.status.get(this.domainObject.identifier);
+        this.removeStatusListener = this.openmct.status.observe(this.domainObject.identifier, this.setStatus);
+    },
     beforeDestroy() {
+        this.removeStatusListener();
+
         if (this.actionCollection) {
             this.unlistenToActionCollection();
         }
@@ -264,6 +263,9 @@ export default {
 
             let sortedActions = this.openmct.actions._groupAndSortActions(actions);
             this.openmct.menus.showMenu(event.x, event.y, sortedActions);
+        },
+        setStatus(status) {
+            this.status = status;
         }
     }
 };

src/ui/components/ObjectLabel.vue

@@ -1,10 +1,7 @@
 <template>
 <a
     class="c-tree__item__label c-object-label"
-    :class="{
-        classList,
-        'is-missing': observedObject.status === 'missing'
-    }"
+    :class="[statusClass]"
     draggable="true"
     :href="objectLink"
     @dragstart="dragStart"
@@ -14,8 +11,8 @@
         class="c-tree__item__type-icon c-object-label__type-icon"
         :class="typeClass"
     >
-        <span class="is-missing__indicator"
-              title="This item is missing"
+        <span class="is-status__indicator"
+              title="This item is missing or suspect"
         ></span>
     </div>
     <div class="c-tree__item__name c-object-label__name">
@@ -49,18 +46,11 @@ export default {
     },
     data() {
         return {
-            observedObject: this.domainObject
+            observedObject: this.domainObject,
+            status: ''
         };
     },
     computed: {
-        classList() {
-            const classList = this.observedObject.classList;
-            if (!classList || !classList.length) {
-                return '';
-            }
-
-            return classList.join(' ');
-        },
         typeClass() {
             let type = this.openmct.types.get(this.observedObject.type);
             if (!type) {
@@ -68,6 +58,9 @@ export default {
             }
 
             return type.definition.cssClass;
+        },
+        statusClass() {
+            return (this.status) ? `is-status--${this.status}` : '';
         }
     },
     mounted() {
@@ -78,8 +71,13 @@ export default {
             this.$once('hook:destroyed', removeListener);
         }
 
+        this.removeStatusListener = this.openmct.status.observe(this.observedObject.identifier, this.setStatus);
+        this.status = this.openmct.status.get(this.observedObject.identifier);
         this.previewAction = new PreviewAction(this.openmct);
     },
+    destroyed() {
+        this.removeStatusListener();
+    },
     methods: {
         navigateOrPreview(event) {
             if (this.openmct.editor.isEditing()) {
@@ -110,6 +108,9 @@ export default {
             // (eg. notabook.)
             event.dataTransfer.setData("openmct/domain-object-path", serializedPath);
             event.dataTransfer.setData(`openmct/domain-object/${keyString}`, this.domainObject);
+        },
+        setStatus(status) {
+            this.status = status;
         }
     }
 };

src/ui/components/object-frame.scss

@@ -110,10 +110,10 @@
             }
         }
 
-        &.is-missing {
+        &.is-status--missing {
             @include isMissing($absPos: true);
 
-            .is-missing__indicator {
+            .is-status__indicator {
                 top: $interiorMargin;
                 left: $interiorMargin;
             }
@@ -145,7 +145,7 @@
         > .c-so-view__view-large { display: block; }
     }
 
-    &.is-missing {
+    &.is-status--missing {
         border: $borderMissing;
     }
 

src/ui/components/object-label.scss

@@ -21,7 +21,7 @@
         font-size: 1.1em;
     }
 
-    &.is-missing {
+    &.is-status--missing {
         @include isMissing($absPos: true);
 
         [class*='__type-icon']:before,
@@ -29,7 +29,7 @@
             opacity: $opacityMissing;
         }
 
-        .is-missing__indicator {
+        .is-status__indicator {
             right: -3px;
             top: -3px;
             transform: scale(0.7);

src/ui/inspector/ObjectName.vue

@@ -2,13 +2,13 @@
 <div class="c-inspector__header">
     <div v-if="!multiSelect"
          class="c-inspector__selected c-object-label"
-         :class="{'is-missing': isMissing }"
+         :class="{'is-status--missing': isMissing }"
     >
         <div class="c-object-label__type-icon"
              :class="typeCssClass"
         >
-            <span class="is-missing__indicator"
-                  title="This item is missing"
+            <span class="is-status__indicator"
+                  title="This item is missing or suspect"
             ></span>
         </div>
         <span v-if="!singleSelectNonObject"

src/ui/layout/BrowseBar.vue

@@ -9,16 +9,13 @@
         ></button>
         <div
             class="l-browse-bar__object-name--w c-object-label"
-            :class="{
-                classList,
-                'is-missing': domainObject.status === 'missing'
-            }"
+            :class="[statusClass]"
         >
             <div class="c-object-label__type-icon"
                  :class="type.cssClass"
             >
-                <span class="is-missing__indicator"
-                      title="This item is missing"
+                <span class="is-status__indicator"
+                      title="This item is missing or suspect"
                 ></span>
             </div>
             <span
@@ -149,17 +146,13 @@ export default {
             viewKey: undefined,
             isEditing: this.openmct.editor.isEditing(),
             notebookEnabled: this.openmct.types.get('notebook'),
-            statusBarItems: []
+            statusBarItems: [],
+            status: ''
         };
     },
     computed: {
-        classList() {
-            const classList = this.domainObject.classList;
-            if (!classList || !classList.length) {
-                return '';
-            }
-
-            return classList.join(' ');
+        statusClass() {
+            return (this.status) ? `is-status--${this.status}` : '';
         },
         currentView() {
             return this.views.filter(v => v.key === this.viewKey)[0] || {};
@@ -225,6 +218,13 @@ export default {
             this.mutationObserver = this.openmct.objects.observe(this.domainObject, '*', (domainObject) => {
                 this.domainObject = domainObject;
             });
+
+            if (this.removeStatusListener) {
+                this.removeStatusListener();
+            }
+
+            this.status = this.openmct.status.get(this.domainObject.identifier, this.setStatus);
+            this.removeStatusListener = this.openmct.status.observe(this.domainObject.identifier, this.setStatus);
         },
         viewProvider(viewProvider) {
             if (this.actionCollection) {
@@ -259,6 +259,10 @@ export default {
             this.unlistenToActionCollection();
         }
 
+        if (this.removeStatusListener) {
+            this.removeStatusListener();
+        }
+
         document.removeEventListener('click', this.closeViewAndSaveMenu);
         window.removeEventListener('click', this.promptUserbeforeNavigatingAway);
     },
@@ -366,6 +370,9 @@ export default {
         },
         toggleLock(flag) {
             this.openmct.objects.mutate(this.domainObject, 'locked', flag);
+        },
+        setStatus(status) {
+            this.status = status;
         }
     }
 };

src/ui/layout/layout.scss

@@ -380,7 +380,7 @@
         margin-left: $interiorMarginLg;
         min-width: 0;
 
-        .is-missing__indicator {
+        .is-status__indicator {
             right: -5px !important;
             top: -4px !important;
         }