Make CSS property user-select:none not to affect Document.caretRangeFromPoint()

[Ryosuke Niwa]

Consider merging https://chromium.googlesource.com/chromium/blink/+/50bbb9f6ab3394327e8fa63312316e6ae217a7a2

This patch introduces PositionWithAffinity as return value of RenderObject::positionForPoint() for making CSS property user-select:none doesn't affect Document.caretRangeFromPoint() and changes caretRangeFromPoint() to use Position instead of VisiblePosition, which excludes user-select:none.

[Alexey Proskuryakov]

I wonder if user-select:none breaks OS X Dictionary.

8+ years later and this bug is still present which makes certain functionality difficult if not impossible to replicate in iOS.

[Ahmad Saleem]

I changed the test case from patch to JSFiddle:

Link - https://jsfiddle.net/4p7rexLf/

*** Safari 15.6.1 on macOS 12.5.1 / STP 151 ***

FAIL range.startContainer should be [object Text]. Was [object Text].
FAIL range.startOffset should be 2. Was 0.
PASS range.collapsed is true
PASS successfullyParsed is true

*** Firefox Nightly 105 ***

FAIL successfullyParsed should be true (of type boolean). Was undefined (of type undefined).

*** Chrome Canary 106 ***

PASS range.startContainer is $("sample").firstChild
PASS range.startOffset is 2
PASS range.collapsed is true
PASS successfullyParsed is true

______________

Just wanted to share updated test results. Thanks!

[Ahmad Saleem]

(In reply to Ahmad Saleem from comment #3)
> I changed the test case from patch to JSFiddle:
> 
> Link - https://jsfiddle.net/4p7rexLf/
> 
> *** Safari 15.6.1 on macOS 12.5.1 / STP 151 ***
> 
> FAIL range.startContainer should be [object Text]. Was [object Text].
> FAIL range.startOffset should be 2. Was 0.
> PASS range.collapsed is true
> PASS successfullyParsed is true
> 
> *** Firefox Nightly 105 ***
> 
> FAIL successfullyParsed should be true (of type boolean). Was undefined (of
> type undefined).
> 
> *** Chrome Canary 106 ***
> 
> PASS range.startContainer is $("sample").firstChild
> PASS range.startOffset is 2
> PASS range.collapsed is true
> PASS successfullyParsed is true
> 
> ______________
> 
> Just wanted to share updated test results. Thanks!

I get:

PASS range.startContainer is $("sample").firstChild
PASS range.startOffset is 2
PASS range.collapsed is true
PASS successfullyParsed is true

TEST COMPLETE
Before Test After

In Safari Technology Preview 162 - I think we can mark this as "RESOLVED CONFIGURATION CHANGED" now. Thanks!

[Ahmad Saleem]

Working as expected in Safari 16.5 (might as well be in Safari 16.4).