Widget - hide selection handle for nested widget

[EwelinaD]

Suggested merge commit message (convention)

Fix (table): Selected nested widget in table selection has no longer outline and selection handle. Closes #9491.

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Additional information

Fix is based on assumption that there are multiple ranges during data selection in table.

[dawidurbanski]

I made one comment/suggestion to consider.

Also I'm pretty sure we need to add a test to cover scenario with multiple ranges.

[oleq]

Let's circle back a little bit. There's a decision concerning UX we must make before we jump to writing code. I'm moving the discussion to the original issue #9491 (comment) where I listed possible scenarios.

[EwelinaD]

I've just pushed suggested changes to tableselection.css.

[oleq]

@ckeditor/qa-team Can you give us a hand, please? 🙏 You can find inspiration in comments #9491 🙃

[FilipTokarski]

Not sure if important.
I found this behaviour on master - #10600. I wouldn't mind about this, but in the context of this PR - apart from flashing border, the widget handler shows up for a split second as well, but I guess it shouldn't be here:

0_table1.mp4

[oleq]

Not sure if important.
I found this behaviour on master - #10600. I wouldn't mind about this, but in the context of this PR - apart from flashing border, the widget handler shows up for a split second as well, but I guess it shouldn't be here:

Let's address it in a separate issue.

[oleq]

@dawidurbanski I don't feel like reviewing a solution I suggested myself. Can you do the review please?

BTW: What's going on with the CI?

[EwelinaD]

Hmm, build details:
The following packages did not provide required code coverage: engine
But there were no changes in the engine package

[FilipTokarski]

Apart from the comment above, I didn't find anything else.

[oleq]

The following packages did not provide required code coverage: engine

There's something wrong with the CI then. Don't worry.

[pomek]

WARN: 'Detected console.warn():', 'Selection change observer detected an infinite rendering loop.'

It decreases the CC. Restarting a build usually helps.

[dawidurbanski]

@dawidurbanski I don't feel like reviewing a solution I suggested myself. Can you do the review please?

@oleq done

@EwelinaD I requested one last change. Thanks!

[dawidurbanski]

LGTM 👍🏻