[Nested widgets] Integration with Magicline plugin

[Olek Nowodziński]

Part of #10931.

I managed to display (and use) magicline inside of a widget but outside of a nested editable, which is unacceptable. It does not strictly concern nested widgets, but I noticed it very fast while playing with them, so that's why I consider it a related issue.

[Matti Järvinen]

Magicline should be banned from including and between elements with cke_widget_editable and cke_widget_element.

To disable magicline from widget and its children one might use magicline_tabuList, but after this magicline cannot be made available within the widget.

CKEDITOR.config.magicline_tabuList = [ 'data-tabu','data-cke-widget-data' ];

Something of a mess that I had in my mind for solving this.. maybe some sort of deny, allow list?

data-cke-widget-wrapper: [banned,allowBefore, allowAfter],
data-cke-widget-editable: [banned,allowWithin]

<div>// allowed
  lipsum
</div>// allowed
<div class="cke_widget_element"> // banned, allowed add before
  <div class="somethingSomething"> // banned
    <div class="cke_widget_editable"> // banned
      <p> // allowed add before
        Widget content editable
      </p> //allowed add after
    </div> // banned
  </div> // banned
</div> // banned, allowed add after
<div> // allowed
  lipsum
</div> // allowed

[Matti Järvinen]

Related #11243

[Piotrek Koszuliński]

cc

[Olek Nowodziński]

Pushed solution and test to ​branch:t/12009.

[Matti Järvinen]

How can I see the commit in GitHub?

[Olek Nowodziński]

Replying to matti:

How can I see the commit in GitHub?

​https://github.com/cksource/ckeditor-dev/compare/t;12009

[Piotrek Koszuliński]

Remember to rearrange commits, so tests come after dev changes.

[Olek Nowodziński]

​git:902757f landed in master.