Writing flow: fix triple click inside text blocks #64928
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Co-authored-by: ellatrix <ellatrix@git.wordpress.org> Co-authored-by: ntsekouras <ntsekouras@git.wordpress.org> Co-authored-by: annezazu <annezazu@git.wordpress.org> Co-authored-by: t-hamano <wildworks@git.wordpress.org> Co-authored-by: eidolonnight <eidolonnight@git.wordpress.org>
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What?
Fixes #64451.
Triple click in a paragraph currently selects the next block also. This is a small regression after #63671.
Also fixes #53128, which was a bug that existed long before #63671!
Why?
Triple should be contained in the block.
How?
The problem is that the browser may select into the next element, even though this selection is not visible.
The selection may be:
anchorNode: p
anchorOffset: 0
focusNode: h2
focusOffset: 0
Even though h2 is technically selected, it is not really because the offset is 0.
We can adjust this in the selection extraction: just return the previous element if the offset is 0 and the direction is forward.
Testing Instructions
Particularly in Chrome:
Have a paragraph and some block like another paragraph or heading following. Triple click in the first block. It should not select multiple blocks (check the inspector).
Testing Instructions for Keyboard
Screenshots or screencast