Implements "set from ..." feature and updates some samples

website/src/runner/index.ts

@@ -51,8 +51,10 @@ async function initialize(state: IPreviewState) {
 
 	document.body.innerHTML += state.html;
 
+	const js = massageJs(state.js);
+
 	try {
-		eval(state.js);
+		eval(js);
 	} catch (err) {
 		const pre = document.createElement("pre");
 		pre.appendChild(
@@ -61,3 +63,35 @@ async function initialize(state: IPreviewState) {
 		document.body.insertBefore(pre, document.body.firstChild);
 	}
 }
+
+(globalThis as any).bindModelToCodeStr = function bindModel(
+	model: any,
+	codeStringName: string
+) {
+	model.onDidChangeContent(() => {
+		const value = model.getValue();
+		window.parent.postMessage(
+			{ kind: "update-code-string", codeStringName, value },
+			"*"
+		);
+	});
+};
+
+function massageJs(js: string) {
+	/*
+	Alternate experimental syntax: // bind to code string: `editor.getModel()` -> codeString
+
+	const bindToCodeStringRegexp = /\/\/ bind to code string: `(.*?)` -> (.*?)(\n|$)/g;
+	js = js.replaceAll(bindToCodeStringRegexp, (match, p1, p2) => {
+		return `globalThis.bindModelToCodeStr(${p1}, ${JSON.stringify(p2)})\n`;
+	});
+	*/
+
+	const setFromRegexp = /\/*\Wset from `(.*?)`:\W*\//g;
+	for (const m of js.matchAll(setFromRegexp)) {
+		const p1 = m[1];
+		const target = JSON.stringify("set from `" + p1 + "`");
+		js += `\n try { globalThis.bindModelToCodeStr(${p1}, ${target}); } catch (e) { console.error(e); }`;
+	}
+	return js;
+}

website/src/website/data/playground-samples/creating-the-diffeditor/hello-diff-world/sample.js

@@ -1,8 +1,18 @@
-var originalModel = monaco.editor.createModel("heLLo world!", "text/plain");
-var modifiedModel = monaco.editor.createModel("hello orlando!", "text/plain");
+const originalModel = monaco.editor.createModel(
+	/* set from `originalModel`: */ `hello world`,
+	"text/plain"
+);
+const modifiedModel = monaco.editor.createModel(
+	/* set from `modifiedModel`: */ `Hello World!`,
+	"text/plain"
+);
 
-var diffEditor = monaco.editor.createDiffEditor(
-	document.getElementById("container")
+const diffEditor = monaco.editor.createDiffEditor(
+	document.getElementById("container"),
+	{
+		originalEditable: true,
+		automaticLayout: true,
+	}
 );
 diffEditor.setModel({
 	original: originalModel,

website/src/website/data/playground-samples/creating-the-editor/hello-world/sample.js

@@ -1,10 +1,10 @@
-const text = `function hello() {
+const value = /* set from `myEditor.getModel()`: */ `function hello() {
 	alert('Hello world!');
 }`;
 
 // Hover on each property to see its docs!
-monaco.editor.create(document.getElementById("container"), {
-	value: text,
+const myEditor = monaco.editor.create(document.getElementById("container"), {
+	value,
 	language: "javascript",
 	automaticLayout: true,
 });

website/src/website/pages/playground/PlaygroundModel.ts

@@ -222,6 +222,26 @@ export class PlaygroundModel {
 		});
 	}
 
+	setCodeString(codeStringName: string, value: string) {
+		function escapeRegexpChars(str: string) {
+			return str.replace(/[-[\]/{}()*+?.\\^$|]/g, "\\$&");
+		}
+
+		const regexp = new RegExp(
+			"(\\b" +
+				escapeRegexpChars(codeStringName) +
+				":[^\\w`]*`)([^`\\\\]|\\n|\\\\\\\\|\\\\`)*`"
+		);
+		debugger;
+		const js = this.js;
+		const str = value.replaceAll("\\", "\\\\").replaceAll("`", "\\`");
+		const newJs = js.replace(regexp, "$1" + str + "`");
+		const autoReload = this.settings.autoReload;
+		this.settings.autoReload = false;
+		this.js = newJs;
+		this.settings.autoReload = autoReload;
+	}
+
 	public showSettingsDialog(): void {
 		this.settingsDialogModel = new SettingsDialogModel(
 			this.settings.settings

website/src/website/pages/playground/PlaygroundPageContent.tsx

@@ -448,7 +448,12 @@ class Editor extends React.Component<{
 				() => {
 					const value = this.props.value.get();
 					if (!this.ignoreChange) {
-						this.editor!.setValue(value);
+						this.model.pushEditOperations(null, [
+							{
+								range: this.model.getFullModelRange(),
+								text: value,
+							}
+						], () => null);
 					}
 				},
 				{ name: "update text" }

website/src/website/pages/playground/Preview.tsx

@@ -48,6 +48,21 @@ export class Preview
 				targetOrigin: "*",
 			});
 		});
+		window.addEventListener("message", (e) => {
+			if (e.source !== iframe.contentWindow) {
+				return;
+			}
+			const data = e.data as
+				| {
+						kind: "update-code-string";
+						codeStringName: string;
+						value: string;
+				  }
+				| { kind: "" };
+			if (data.kind === "update-code-string") {
+				this.props.model.setCodeString(data.codeStringName, data.value);
+			}
+		});
 	};
 
 	componentDidMount() {