Prevent editing some components

Yes i think that the propagation idea is great. To be clear the reason im looking for this is im building out a module for Drupal 8 that will allow creating themes via the GrapeJS tool. In Drupal you have elements called Blocks, and my thought was to block of editing of those on the Main editor, and instead have a popup editor to edit them and allow reusing those across various pages.

This is due to how Drupal renders content via PHP and thus I need to convert the html to php variables when storing the template into a twig file.

An example you can use in the demo

1. Select an element (eg. some section)
2. Execute this in console

editor.getSelected().append(`
<div data-gjs-removable="false" data-gjs-draggable="false" data-gjs-propagate='["removable", "draggable"]' style="color:blue">
  <div>Comp01</div>
	<div>
    <div>Comp11</div>
    <div data-gjs-stop="1" data-gjs-removable="true" data-gjs-draggable="true" data-gjs-propagate='["stop"]' style="color:red">
      <div>Comp21</div>
      <div>Comp22</div>
    </div>
    <div>
      <div>Comp31</div>
      <div>Comp32</div>
    </div>
  </div>
  <div>Comp03</div>
</div>
`)