Bug (RAF_returning_zero) – Initial call to webkitRequestAnimationFrame returns 0, Spec indicates the handle should always be > 0

• Component: WebKit API
• Status: RESOLVED FIXED

Looking at http://www.w3.org/TR/animation-timing/ there is a section that reads: "The requestAnimationFrame method is used to signal to the user agent that a script-based animation needs to be resampled. When requestAnimationFrame(callback) is called, the user agent must schedule a script-based animation resampling by appending to the end of the animation frame request callback list an entry whose handle is a user-agent-defined integer greater than zero that uniquely identifies the entry in the list and whose callback is callback."

However the first call to webkitRequestAnimationFrame seems to be returning a handle of 0. 
It's minor, but worth mentioning.

[Dean Jackson]

Yeah, easy fix.

[James Robinson]

Whoops!  Pre-increment when it should be a post-increment.

For the record, the intent of that text is that the return value should never be false-y and it should match setTimeout/setInterval

[Radar WebKit Bug Importer]

<rdar://problem/12100411>

[Dean Jackson]

Created attachment 158471 [details]
Patch

[Dean Jackson]

Committed r125633: <http://trac.webkit.org/changeset/125633>