Hello Naveed
I don't know how your Document is structured, but if all Text Elements
were childnodes of the same node x, you could just unlink this node x
update its childnodes and then link back the node x.
This is the point in unlinking anyway, making multiple modifications in
one go.
Another question, do you perform all your modifications in one single
Runnable?
Daniel
noni_4444 wrote:
Node parent = textElement.getParentNode();
Node stub = parent.getOwnerDocument().createElement("g");
// unlink element
parent.replaceChild(stub, textElement);
// run your updates
// re link element
stub.getParentNode().replaceChild(textElement, stub);
Trying above code did reduce the CPU usage by 3 to 4% but now replace child
becomes a problem by taking up 35% of cpu time. I get an array of
textElements and have to iterate over the array in a loop to call
(unlink->update->replace) for each text element. So taking the replaceChild
function out of the loop seems impossible.
Is it possible to take this replaceChild method call out of the loop, when i
just receive an array of text elements?
Thanks,
Naveed
noni_4444 wrote:
I have a routine where i update several DOM elements inside an update
manager
thread. The problem faced
is that setAttribute and setNodeValue methods take a lot of CPU time.
An earlier post says:
"Disconnect the tree from the document before making the changes. This
avoids the overhead of keeping the GVT tree in synch with every change"
In my case i am updating the multiple attributes of different Elements
repeatedly. How can i detach the attributes of an element before making
the
changes.
If i do it, it would mean that i do something like
for (1 -> n)
{
Get current element from array
Detach attributes of element //which dom api method to
call????
Update multiple attributes of this element
Attach attributes of element //which dom api method to
call????
}
Any pointers, links, references would be helpful.
Thanks
Naveed
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