[Webkit-unassigned] [Bug 17306] New: Transitions between styles that have different transition properties behave inconsistently

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=17306

           Summary: Transitions between styles that have different
                    transition properties behave inconsistently
           Product: WebKit
           Version: 525+ (Nightly build)
          Platform: Macintosh
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mitz at webkit.org
                CC: hyatt at apple.com


Transitions between styles that have different transition properties behave
inconsistently: the transitioning properties, the durations and the timing
functions are determined by the first target style that specifies a transition,
and remain in effect for all subsequent transitions regardless of what they
specify. The exception is transitions to a style that does not specify
transitions, which resets everything.

The attached test case describes the expected behavior according to the rule
that the "from" style determines the transition properties. That rule is my
interpretation of the proposed spec. However it might make more sense for the
"target" style to determine the transition. The latter rule is also a little
easier to implement.


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