1442711 - Field of input type=text dir=rtl text selection is incorrect for bidi text

Status: RESOLVED DUPLICATE of bug 312678

(Core :: DOM: Selection, defect)

Description

[addison]

Attachment: snip_20180302102558.png

User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Firefox/52.0
Build ID: 20180118122319

Steps to reproduce:

This was discussed on the winter list starting here here: https://lists.w3.org/Archives/Public/www-international/2018JanMar/0104.html

1. Create an input field of type=text with dir=rtl.
2. Set the value of the field to "abcdאבגדהוזתefgh" (abcdאבגדהוזתefgh)
3. Place the cursor at either end of the text (click in and press Home or End)
4. Shift-arrow across the text (or use the mouse to perform text selection)




Actual results:

The text does not select properly according to the Unicode bidi algorithm. Directional runs can be selected, but the entire text cannot be highlighted. Crossing RTL/LTR boundaries is incorrect. Note that a field with dir=ltr works correctly!




Expected results:

Correct selection. I have attached a screen shot of some screenshots of both FF and the equivalent (proper) behavior in Chrome.

Comment 1

[Zibi Braniecki [:zbraniecki][:gandalf]]

Can you help with triaging this Kato-san? I'm not sure if it is layout or Internationalization and if we have it filed already.

Comment 3

[Makoto Kato [:m_kato]]

(In reply to Zibi Braniecki [:gandalf][:zibi] from comment #1)
> Can you help with triaging this Kato-san? I'm not sure if it is layout or
> Internationalization and if we have it filed already.

Although it is DOM's selection API issue, I think that nsFrameSelection should consider this situation...