Unable to post message from rendered HTML output to NotebookEditor

[DonJayamanne]

• VSCode Version:
• OS Version:

Steps to Reproduce:

Renderer:

 {
 outputKind: CellOutputKind.Rich,
 data: {
	 data['text/html'] = `
		 <button onclick="myFunction()">Click me</button>
		 <script>
			 function myFunction() {
				 acquireVsCodeApi().postMessage({type:'Don', payload:'wow'});
			 }
		 </script>
		 `
	}
 };

Add event handler to receive messages:

 notebook.activeNotebookEditor?.onDidReceiveMessage((e) => {
	 console.error('Callback not executed');
 });

Does this issue occur when all extensions are disabled?: N/A

@rebornix /cc

[rebornix]

cc @connor4312 as we are moving to new API for renderers in webview.

[connor4312]

I'm not sure why postMessage stopped working for you in the webview, but I am planning to change this.

Primarily, there's now the API acquireNotebookRendererApi(rendererType) API which exposes events and state scoped per the renderer. The returned object also has the postMessage key on it. I plan to introduce an optional onDidReceiveMessage method to the NotebookOutputRenderer which will receive messages sent from the webview.

I understand you're intending to ship Insiders soon; I'll try to get that in tomorrow morning.