[webkit-dev] [Feature] Implementing UndoManager and DOM Transaction behind a build flag

[Ryosuke Niwa]

Hello WebKittens,

I wanted to give you heads up about implementing UndoManager and DOM
Transaction specification at
http://dvcs.w3.org/hg/undomanager/raw-file/tip/undomanager.html behind a
build flag on https://bugs.webkit.org/show_bug.cgi?id=87189 (meta bug).

The API lets websites describe undoable actions on a web page so that Web
browsers can show them in Edit menu and other native UI. It also allows
websites to easily segregate multiple editable regions into different undo
scopes (editable regions in different undo scopes are managed by different
undo managers).

Some of use cases are listed on
http://wiki.whatwg.org/wiki/UndoManager_Problem_Descriptions, and we have
had an extensive discussion about this API with developers of TinyMCE and
CKEditor as well as Google's internal developers. Mozilla is also
interested in implementing this API in near future.

Our plan is to implement this feature behind a build flag to get further
feedback on the API. Please let me know if you have any concerns or
comments.

Best,
Ryosuke Niwa
Software Engineer
Google Inc.
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