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HTMLImports.Loader maybe callback twice #418
Description
Activity
Marking this WONTFIX.
We are removing this hacky loader api for the ability to watch for new<link rel="import">elements inserted dynamically, the same as what you would do in a native browser implementation of HTML Imports.This new ability will be enabled in the next release.
Mailing list thread with a similar question: https://groups.google.com/forum/#!msg/polymer-dev/pn1mhqLugVU/iQnfaH4W5_sJ
I apologize for my bad english first.
When I write x-page (an element to load html file into main document dynamically, like iframe),
I use this method:
Sometimes, myCallback will be called twice.
In HTMLImports/src/Loader.js, I found the call sequence:
addNodes -> require -> dedupe -> tail -> checkDone,
and
addNodes -> checkDone.
If all the 'nodes' to fetch are cached before, then oncomplete will be called twice. And it indeed called twice sometime.
It seems there's no matter with HTMLImports/src/Parser.js, but it really bother me.