On 10/11/2012 02:40 PM, Paul Rouget wrote:
Context: in the firefox devtools, we need to track some nodes and update
different "views" based on what's happening to this node (show its parents,
show its child, show its attributes, …).
The new Mutation observers are very helpful. But there's one thing I am not
really sure how to handle correctly .
When a node gets detached (parent.removeChild(node)) or reparented, I need to
be notified.
My current idea is to listen to "childList" mutations from the parent,
then, on this mutation, check if the node is still part of the children of
the parent, if not, check if it has a parent, if so, the node has been
*relocated*, then I need re-listen to a "childList" mutation from this
new parent, if no parent, the node has been *detached*.
Why do you need to re-listen anywhere?
You get the node in a MutationRecord and when the callback is called you check
where it is.
( node.contains can be useful and certainly faster than anything in JS. )
If the node doesn't have parent, it is detached.
I was wondering if there was any better way to do that.
Thanks,
-- Paul
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