Thank you for the information. Is there some simple, efficient way to detect this case?
I already tried "document.body.contains" but this didn't do the trick for me.
Or is it better to just ignore this (maybe pretty rare) case and handle "detached trees" just like they would still be connected to the website?
When is my "detached subtree" actually purged from memory? On 08/17/2015 07:36 PM, Bobby Holley wrote:
The behavior here should be the same whether or not you're using XrayWrappers: If you remove the parent, you'll end up with a detached subtree. You can modify this subtree, but most of the operations (like loading a web page in an iframe) will only matter when the page gets reinserted into the document. On Mon, Aug 17, 2015 at 10:32 AM, Manuel Reimer <[email protected]> wrote:Hello, maybe someone here can explain some details about the internals of Firefox to me. My addon "EmbedUpdater" replaces <object> and <embed> tags with an <iframe>, when possible and a known replacement exists. This helps to get rid of Flash. Currently I have some more or less ugly "error handling" code to catch the case, that, for example, several <object>'s are stacked like this: <object data="..."> <object data="..."> <object data="..."> <embed src="..."> </object> </object> </object> The potential problem, I see here, is that I get a list of all objects first (getElementsByTagName) and then loop over them. So it may be possible that the first <object> in this tree is already gone and replaced if my code wants to handle the second one. I now removed my ugly "protection code" and it seems like it is impossible to produce any error in this case. It seems like it doesn't matter if the parent of one of the children is gone. So what I would like to know: In which state is my "XRay-object", I use to get data from a node in a website, if the parent is gone and so the node itself is no longer on the page? Do I have to handle this case somehow or is it save to just ignore this case? Thank you very much in advance. Manuel _______________________________________________ dev-platform mailing list [email protected] https://lists.mozilla.org/listinfo/dev-platform_______________________________________________ dev-platform mailing list [email protected] https://lists.mozilla.org/listinfo/dev-platform
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