[Webkit-unassigned] [Bug 23556] On RTL pages, horizontal scrollbar is missing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=23556


Xiaomei Ji <xji at chromium.org> changed:

           What    |Removed                     |Added
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  Attachment #53324|0                           |1
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  Attachment #62608|                            |review?
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--- Comment #37 from Xiaomei Ji <xji at chromium.org>  2010-07-26 14:37:16 PST ---
Created an attachment (id=62608)
 --> (https://bugs.webkit.org/attachment.cgi?id=62608)
patch w/ layout test

The patch works for Chromium in 3 platforms, but it does not work well in MAC port where ScrollView is a platformWidget.

The problem in MAC  port is:

For RTL page, the horizontal scrollbar should be at the very right when page is loaded at first time. I am re-setting the scroll position in 
(void)setScrollOriginX:(int)scrollOriginX inside WebDynamicScrollBarsView.mm. Please refer to FIXME in the file.
But apparently, it is not the right place to reset it.

Resetting the scroll position there makes the scroll position reset to its original position for RTL page when page reload, page zoom, page resize, and might also window.scrollX (although I do not understand why there is write operation in this read-only access), which are all wrong. Please refer to the FIXMEs in the layout test file.

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