On Jun 24, 2010, at 6:40 AM, Eric Zhou wrote:
> After parsing html, webkit should maintain a pointer pointing to the root of
> dom tree. I followed the parsing process, but the clue is broken at
> HTMLTokenizer::State HTMLTokenizer::parseTag(SegmentedString& src, State
> state) --- in file htmlTokenizer.cpp.
>
> To summarize this function:
>
> HTMLTokenizer::State HTMLTokenizer::parseTag(SegmentedString& src, State
> state)
> {
> ...
> RefPtr<Node> n = processToken();
> ...
> }
>
> where the "n" is the root node of dom tree. but after this "n" is not pointed
> by any other pointer and not passed out of this function.
>
> My question is how webkit get the root of dom tree after this function?
processToken calls HTMLTreeBuilder::parseToken to create the Node. parseToken
inserts the Node into the DOM before returning it. So by the time the Node is
returned from processToken, it is already in the DOM.
HTMLTreeBuilder holds a pointer to a Document. From there you can work your way
up to the DOMWindow, which is the root of the DOM.
-Adam
_______________________________________________
webkit-help mailing list
[email protected]
http://lists.webkit.org/mailman/listinfo.cgi/webkit-help
