[Webkit-unassigned] [Bug 105281] New: animation-fill-mode doesn’t respect animation-direction

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=105281

           Summary: animation-fill-mode doesn’t respect
                    animation-direction
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
               URL: http://result.dabblet.com/gist/4168317
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: lea at w3.org


Quoting the spec [1]:

> If the value for ‘animation-fill-mode’ is ‘backwards’, then the animation will apply the property values defined in the keyframe that will start the first iteration of the animation, during the period defined by ‘animation-delay’. These are either the values of the ‘from’ keyframe (when ‘animation-direction’ is ‘normal’ or ‘alternate’) or those of the ‘to’ keyframe (when ‘animation-direction’ is ‘reverse’ or ‘alternate-reverse’).

> If the value for ‘animation-fill-mode’ is ‘forwards’, then after the animation ends (as determined by its ‘animation-iteration-count’), the animation will apply the property values for the time the animation ended. When ‘animation-iteration-count’ is an integer greater than zero, the values applied will be those for the end of the last completed iteration of the animation (rather than the values for the start of the iteration that would be next). When ‘animation-iteration-count’ is zero, the values applied will be those that would start the first iteration (just as when ‘animation-fill-mode’ is ‘backwards’).

Therefore the attached testcase should be green, not red, since `animation-direction` is `reverse`. It’s green in every other tested browser that supports CSS animations.

[1]: http://dev.w3.org/csswg/css3-animations/#animation-fill-mode-property

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