[Opera&Inline] Selection is lost on click in toolbar

[Piotrek Koszuliński]

1. Open inlineall sample.
2. Focus one of editors and select some text.
3. Try to apply basic styles, lists (when at least two paragraphs selected) or to open any combo.

• Expected: Style is applied or selection is kept when combo opened.
• Actual: Styles very rarely get applied and (in fact "because") selection is lost.

[Garry Yao]

This doesn't affect v3 and framed wysiwyg.

[Garry Yao]

This's caused by an Opera bug which can be verified with the following tc:

​http://jsfiddle.net/DpbTT/8/

In short "unselectable" attribute is not able to work on a span, to keep the editable text selection, when clicking inside of a button.

Considering it's bad to change the toolbar structure just to workaround this bug, I'm proposing a selection lock to resolve the issue here.

[Piotrek Koszuliński]

Fix works, is rough, but we've got no choice.

[Garry Yao]

A Opera browser fix would be still very desired for this issue, as other editor UIs will be potentially suffered from this bug as well.

[Garry Yao]

Fixed on master with:

​https://github.com/ckeditor/ckeditor-dev/commit/df410e60c58e1a8b25b43bff2557b64b1ca7b8d4