257672 - Focusing css scrollable item affects scroll position of inner items

Status: RESOLVED WORKSFORME

(Core :: DOM: UI Events & Focus Handling, defect, P5)

Description

[Aaron Leventhal]

Offshoot from bug 254966.
Testcase: http://bugzilla.mozilla.org/attachment.cgi?id=156377&action=view
Follow instructions in test case.

When the focus outline gets drawn it causes all of the inner frames to be
reflowed, which causes everything to scroll to the top.

nsChangeHint nsStyleOutline::CalcDifference(const nsStyleOutline& aOther) const
...
  if (outlineWasVisible != outlineIsVisible || 
      mOutlineWidth != aOther.mOutlineWidth) {
    return NS_CombineHint(nsChangeHint_ReflowFrame, nsChangeHint_RepaintFrame);
  }

I thought this could get fixed by bug 249102. Robert didn't think so.

Comment 1

[Mats Palmgren (inactive)]

Also try:
3. scroll the SELECT to the end
4. click on the green background -> SELECT scrolls to top.

Comment 2

[Ronald Tilby]

Mozilla Windows Trunk Nightly Build Regression Window
Pass: 2004090105
Fail: 2004090206

Comment 3

[Ryan VanderMeulen [:RyanVM]]

Testcase WFM both pre- and post-reflow branch landing. Can anybody confirm?

Comment 4

[Martijn Wargers (dead)]

(In reply to comment #3)
> Testcase WFM both pre- and post-reflow branch landing. Can anybody confirm?

Yeah, this is even wfm with a 1.8.1 build of Seamonkey of 2006-09-05

Comment 5

[Martijn Wargers (dead)]

Markin WORKSFORME, if anyone can still reproduce this, please reopen.