[Webkit-unassigned] [Bug 115708] New: select element’s default selection is affected by CSS rules

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=115708

           Summary: select element’s default selection is affected by CSS
                    rules
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Forms
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rniwa at webkit.org
                CC: adele at apple.com, darin at apple.com,
                    michelangelo at webkit.org, tkent at chromium.org,
                    jonlee at apple.com


We should consider merging
https://chromium.googlesource.com/chromium/blink/+/938d5b4ad28b364346bc8c182b4a71b13d20975d

<select> default selection is affected by CSS styling.

If we have option:checked selectors, HTMLOptionElement::selected is called even
when its owner option list is incomplete. It makes the default selection
incorrect. To avoid this issue, we introduce isParsingInProgress flag, and
HTMLOptionElement::selected doesn't call
HTMLSelectELement::updateListItemSelectedStates if the flag is true.

Because this patch reduces the number of calls to
RenderMenuList::updateFromElement, a bug of RenderText is unveiled. A change of
RenderMenuList::setText avoids the bug.

Also, this change and accessibility/add-to-menu-list-crashes.html test unveiled a
bug that HTMLSelectElement::selectedOption didn't update selection status.

Tests:
* fast/forms/select/menulist-disabled-option.html is udpated. This patch updates
  some option text so that expectations are easy to understand.
* fast/forms/HTMLOptinElement_selected3.html:
  Update description, and make this work on IE10.
  The new behavior is compatible with IE10.

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.