Both ElementAnimations and ElementTransitions have an EnsureStyleRuleFor method.
The ElementAnimations version is a more general of the ElementTransitions one
with the exception that the ElementTransitions version checks for finished
transitions. This patch moves the code from ElementAnimations to
CommonElementAnimationData with one minor change: adding the checks for finished
transitions. The ElementTransitions version is removed.
Since the ElementAnimations version contains a second parameter, aIsThrottled,
callers of ElementTransitions must include this extra parameter. In
a subsequent patch we add an enum for this parameter to make call sites easier
to read.
The ElementAnimations version also sets the mNeedsRefreshes member so at the
same time we move mNeedsRefreshes to CommonElementAnimationData. Furthermore,
since the ElementAnimations version which we have adopted returns early if
mNeedsRefreshes is false, this patch ensures that when we call
EnsureStyleRuleFor from ElementTransitions::WalkTransitionRule, we set
mNeedsRefreshes to true first.
Another difference to account for is that the ElementTransitions version of
EnsureStyleRuleFor *always* sets mStyleRule (even if it doesn't add anything to
it) where as the ElementAnimations version only creates the rule when necessary
so we need to add a check to ElementTransitions::WalkTransitionRule that
mStyleRule is actually set before using it.
An explanation of the Mozilla Source Code Directory Structure and links to
project pages with documentation can be found at:
https://developer.mozilla.org/en/Mozilla_Source_Code_Directory_Structure
For information on how to build Mozilla from the source code, see:
http://developer.mozilla.org/en/docs/Build_Documentation
To have your bug fix / feature added to Mozilla, you should create a patch and
submit it to Bugzilla (https://bugzilla.mozilla.org). Instructions are at:
http://developer.mozilla.org/en/docs/Creating_a_patch
http://developer.mozilla.org/en/docs/Getting_your_patch_in_the_tree
If you have a question about developing Mozilla, and can't find the solution
on http://developer.mozilla.org, you can try asking your question in a
mozilla.* Usenet group, or on IRC at irc.mozilla.org. [The Mozilla news groups
are accessible on Google Groups, or news.mozilla.org with a NNTP reader.]
You can download nightly development builds from the Mozilla FTP server.
Keep in mind that nightly builds, which are used by Mozilla developers for
testing, may be buggy. Firefox nightlies, for example, can be found at:
ftp://ftp.mozilla.org/pub/firefox/nightly/latest-trunk/
- or -
http://nightly.mozilla.org/
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