- From: Sukolsak Sakshuwong <sukolsak@google.com>
- Date: Mon, 6 Aug 2012 18:03:01 -0700
- To: public-webapps@w3.org
Should we be able to revert the following transaction?
<!DOCTYPE html>
<html>
<body>
<div id="a">Hello</div>
<script>
var a = document.getElementById("a");
document.undoManager.transact({
"executeAutomatic": function () {
var b = document.createElement("div");
b.appendChild(a);
}
});
document.undoManager.undo();
</script>
<body>
</html>
Note that there are two DOM changes occurring inside the
executeAutomatic function:
1. "a" is removed from its parent.
2. "a" is added as a child of "b".
Only the first DOM change is recorded. The second DOM change is not
recorded because "b" is not a descendant of the undo scope host, which
is the document in this case.
Therefore, only the first DOM change will be reverted. However,
according to the spec
(http://dvcs.w3.org/hg/undomanager/raw-file/tip/undomanager.html#reverting-dom-changes),
we can't revert it because a's parent is not null. Thus, "a" will not
be added back to the document.
Received on Wednesday, 8 August 2012 22:22:00 UTC