add array of initializers, to run after the python runtime has loaded

pyscriptjs/src/App.svelte

@@ -4,7 +4,7 @@
   import { faPlusCircle } from '@fortawesome/free-solid-svg-icons'
   import Tailwind from "./Tailwind.svelte";
   import { loadInterpreter } from './interpreter';
-  import { pyodideLoaded, loadedEnvironments, navBarOpen, componentsNavOpen, mode, scriptsQueue } from './stores';
+  import { pyodideLoaded, loadedEnvironments, navBarOpen, componentsNavOpen, mode, scriptsQueue, initializers } from './stores';
   import Main from "./Main.svelte";
   import Header from "./Header.svelte";
   import SideNav from "./SideNav.svelte";
@@ -47,6 +47,12 @@
       for (let script of $scriptsQueue) {
         script.evaluate();
       }
+      scriptsQueue.set([])
+    }
+
+    // now we call all initializers AFTER we actually executed all page scripts
+    for (let initializer of $initializers){
+      initializer();
     }
   }
 

pyscriptjs/src/components/pyrepl.ts

@@ -6,7 +6,7 @@ import { keymap, ViewUpdate } from "@codemirror/view";
 import { defaultKeymap } from "@codemirror/commands";
 import { oneDarkTheme } from "@codemirror/theme-one-dark";
 
-import { pyodideLoaded, loadedEnvironments, componentDetailsNavOpen, currentComponentDetails, mode, addToScriptsQueue } from '../stores';
+import { pyodideLoaded, loadedEnvironments, componentDetailsNavOpen, currentComponentDetails, mode } from '../stores';
 import { addClasses } from '../utils';
 
 // Premise used to connect to the first available pyodide interpreter
@@ -208,7 +208,7 @@ export class PyRepl extends HTMLElement {
             let source = this.editor.state.doc.toString();
             let output;
             if (source.includes("asyncio")){
-              output = pyodide.runPythonAsync(source);
+              output = await pyodide.runPythonAsync(source);
             }else{
               output = pyodide.runPython(source);
             }

pyscriptjs/src/components/pyscript.ts

@@ -6,13 +6,14 @@ import { keymap, ViewUpdate } from "@codemirror/view";
 import { defaultKeymap } from "@codemirror/commands";
 import { oneDarkTheme } from "@codemirror/theme-one-dark";
 
-import { pyodideLoaded, loadedEnvironments, componentDetailsNavOpen, currentComponentDetails, mode, addToScriptsQueue } from '../stores';
+import { pyodideLoaded, loadedEnvironments, componentDetailsNavOpen, currentComponentDetails, mode, addToScriptsQueue, addInitializer } from '../stores';
 import { addClasses } from '../utils';
 
 // Premise used to connect to the first available pyodide interpreter
 let pyodideReadyPromise;
 let environments;
 let currentMode;
+let handlersCollected = false;
 
 pyodideLoaded.subscribe(value => {
   pyodideReadyPromise = value;
@@ -40,6 +41,46 @@ function createCmdHandler(el){
 }
 
 
+class Script {
+  source: string;
+  state: string;
+  target: string;
+ 
+  constructor(source: string, target: string) {
+    this.target = target;
+    this.source = source;
+    this.state = 'waiting';
+  }
+ 
+  async evaluate() {
+    console.log('evaluate');
+      let pyodide = await pyodideReadyPromise;
+      // debugger
+      try {
+        // @ts-ignore
+        // let source = this.editor.state.doc.toString();
+        let output;
+        if (this.source.includes("asyncio")){
+          output = await pyodide.runPythonAsync(this.source);
+        }else{
+          output = pyodide.runPython(this.source);
+        }
+
+        if (this.target){
+          // this.editorOut.innerHTML = s;
+        }
+        // if (output !== undefined){
+        //   this.addToOutput(output);
+        // }
+
+        
+    } catch (err) {
+        console.log("OOOPS, this happened: " + err);
+          // this.addToOutput(err);
+      }
+  }
+}
+
 export class PyScript extends HTMLElement {
     shadow: ShadowRoot;
     wrapper: HTMLElement;
@@ -176,11 +217,10 @@ export class PyScript extends HTMLElement {
             let source = this.editor.state.doc.toString();
             let output;
             if (source.includes("asyncio")){
-              output = pyodide.runPythonAsync(source);
+              output = await pyodide.runPythonAsync(source);
             }else{
               output = pyodide.runPython(source);
             }
-
             if (output !== undefined){
               this.addToOutput(output);
             }
@@ -200,3 +240,47 @@ export class PyScript extends HTMLElement {
   
     }
   }
+
+async function initHandlers() {
+  if( handlersCollected == true ) return;
+  
+  console.log('Collecting nodes...'); 
+  let pyodide = await pyodideReadyPromise;
+  let matches : NodeListOf<HTMLElement> = document.querySelectorAll('[pys-onClick]');
+  let output;
+  let source;
+  for (var el of matches) {
+    let handlerCode = el.getAttribute('pys-onClick');
+    source = `Element("${ el.id }").element.onclick = ${ handlerCode }`;
+    output = await pyodide.runPythonAsync(source);
+
+    // el.onclick = (evt: any) => {
+    //   console.log("click");
+    //   new Promise((resolve, reject) => {
+    //     setTimeout(() => {
+    //       console.log('Inside')
+    //     }, 300);
+    //   }).then(() => {
+    //     console.log("resolved")
+    //   });
+    //   // let handlerCode = el.getAttribute('pys-onClick');
+    //   // pyodide.runPython(handlerCode);
+    // }
+  }
+  handlersCollected = true;
+
+  matches = document.querySelectorAll('[pys-onKeyDown]');
+  for (var el of matches) {
+    let handlerCode = el.getAttribute('pys-onKeyDown');
+    source = `Element("${ el.id }").element.addEventListener("keydown",  ${ handlerCode })`;
+    output = await pyodide.runPythonAsync(source);
+  }
+}
+addInitializer(initHandlers)
+
+// if( document.readyState === 'loading' ) {
+//   document.addEventListener( 'DOMContentLoaded', initHandlers );
+// }
+// else if( document.readyState === 'interactive' || document.readyState === 'complete' ) {
+//   initHandlers();
+// }

pyscriptjs/src/interpreter.ts

@@ -47,31 +47,55 @@ pyscript = PyScript()
 
 
 class Element:
-    def __init__(self, element_id):
+    def __init__(self, element_id, element=None):
         self._id = element_id
+        self._element = element
 
     @property
     def element(self):
         """Return the dom element"""
-        return document.querySelector(f'#{self._id}');
+        if not self._element:
+            self._element = document.querySelector(f'#{self._id}');
+        return self._element
 
     def write(self, value, append=False):
         console.log(f"Element.write: {value} --> {append}")
+        # TODO: it should be the opposite... pyscript.write should use the Element.write
+        #       so we can consolidate on how we write depending on the element type
         pyscript.write(self._id, value, append=append)
 
     def clear(self):
+        if hasattr(self.element, 'value'):
+            self.element.value = ''
+        else:
             self.write("", append=False)
 
-    def clone(self, new_id=None):
+    def select(self, query, from_content=False):
+        el = self.element
+        if from_content:
+            el = el.content
+
+        _el = el.querySelector(query)
+        if _el:
+            return Element(_el.id, _el)
+        else:
+            console.log(f"WARNING: can't find element matching query {query}")
+
+    def clone(self, new_id=None, to=None):
         if new_id is None:
             new_id = self.element.id
 
-        clone = self.element.cloneNode(true);
+        clone = self.element.cloneNode(True);
         clone.id = new_id;
 
+        if to:
+            to.element.appendChild(clone)
+
         # Inject it into the DOM
         self.element.after(clone);
         
+        return Element(clone.id, clone)
+
 `
 
 let loadInterpreter = async function(): any {
@@ -81,13 +105,13 @@ let loadInterpreter = async function(): any {
         }); 
 
     // now that we loaded, add additional convenience fuctions
-    pyodide.loadPackage(['matplotlib', 'numpy'])
+    // pyodide.loadPackage(['matplotlib', 'numpy'])
 
     await pyodide.loadPackage("micropip");
-    await pyodide.runPythonAsync(`
-    import micropip
-    await micropip.install("ipython")
-    `);
+    // await pyodide.runPythonAsync(`
+    // import micropip
+    // await micropip.install("ipython")
+    // `);
 
     let output = pyodide.runPython(additional_definitions);
 

pyscriptjs/src/stores.ts

@@ -23,8 +23,10 @@ export const mainDiv = writable(null);
 export const currentComponentDetails = writable([]);
 export const mode = writable(DEFAULT_MODE)
 export const scriptsQueue = writable([])
+export const initializers = writable([])
 
-let scriptsQueue_ = []
+let scriptsQueue_ = [];
+let initializers_ = [];
 
 scriptsQueue.subscribe(value => {
   scriptsQueue_ = value;
@@ -33,3 +35,11 @@ scriptsQueue.subscribe(value => {
 export const addToScriptsQueue = (script) => {
   scriptsQueue.set([...scriptsQueue_, script]);
 };
+
+scriptsQueue.subscribe(value => {
+  scriptsQueue_ = value;
+});
+
+export const addInitializer = (initializer) => {
+  initializers.set([...initializers_, initializer]);
+};