Why is a request to 'about:blank' triggered when the editor is initialized? about wysihtml5

[Neener54]

I believe this has something to do with the creation of the iframe. Not 100% sure though.

[tiff]

Hey @azolotov,

thanks for your investigation.

wysihtml5 creates an empty iframe (with no src set) which acts as the editor's sandbox.
This in fact seems to load the browser's empty default page: about:blank
My tests also show me that this is causing the loading bar to flicker shortly.

Right now I have no idea how to avoid that behavior but I'm open to suggestions...

[azolotov]

Is there any way to catch those requests before they are executed and just kill them?

[tiff]

This seems to fix the problem in Firefox but not Chrome:

var iframe = document.createElement("iframe");
document.body.appendChild(iframe);
iframe.contentWindow.stop();

Can you verify?

However it seems that the loading spinner is not only triggered by the iframe but also by the operation that creates a dom in it.

sandbox.js #161 (https://github.com/xing/wysihtml5/blob/master/src/dom/sandbox.js#L161)

      // Create the basic dom tree including proper DOCTYPE and charset
      iframeDocument.open("text/html", "replace");
      iframeDocument.write(sandboxHtml);
      iframeDocument.close();

[tiff]

Closing this as "won't fix" for now as I don't see any way to bypass the browser loading spinner.