A lot of methods in editor returns a child offset with an out param when it
returns its container and offset in the container. This is ugly hack for
performance of nsINode::IndexOf(). However, there are a lot of regression
since the relation between offset and child node can be broken really easily.
So, we should make EditorDOMPoint as a subclass of RangeBoundary and manage
a set of container, reference child and its offset in it (e.g.,
SetNextSibling() added by this patch).
Note that RangeBoundary's performance is not good for temporary use if we set
a point with offset, it immediately retrieves mRef. The following patch will
improve this performance.
MozReview-Commit-ID: 7mcJ1P1OjVr
--HG--
rename : editor/libeditor/EditorUtils.h => editor/libeditor/EditorDOMPoint.h
extra : rebase_source : 785094fcfc592d9e5b48cbc36ed225dbb8bb4111
