Last modified: 2012-03-12 12:50:20 UTC

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Bug 34696 - mw.loader.using shouldn't call callback more than once


Summary:	mw.loader.using shouldn't call callback more than once

Status:	RESOLVED FIXED

Product:	MediaWiki
Classification:	Unclassified
Component:	ResourceLoader (Other open bugs)
Version:	1.20.x
Hardware:	All All

Importance:	Normal major (vote)
Target Milestone:	1.20.0 release
Assigned To:	Roan Kattouw

URL:
Whiteboard:
Keywords:	code-update-regression, patch, patch-need-review

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2012-02-24 19:50 UTC by Ryan Kaldari
Modified:	2012-03-12 12:50 UTC (History)
CC List:	7 users (show)

See Also:
Web browser:	---
Mobile Platform:	---
Assignee Huggle Beta Tester:	---

Attachments
Patch to fix callback bug (647 bytes, patch) 2012-03-07 23:54 UTC, Ryan Kaldari	Details
Add an attachment (proposed patch, testcase, etc.)

Description Ryan Kaldari 2012-02-24 19:50:57 UTC

When running CentralNotice on trunk with debug=true, I usually get the banner repeated several times at the top of the page (as many as 5 times). The BannerController and BannerListLoader are only loaded once, but the BannerLoader gets loaded several times. I've only noticed this behavior after my last svn update, so it is likely due to a recent change.

Comment 1 Ryan Kaldari 2012-02-24 21:53:15 UTC

I've isolated the bug. The following command only gets executed once...
mw.loader.using( 'mediawiki.user', function() { ...blah... } );
... yet the anonymous callback function (...blah...) gets executed multiple times.

Comment 2 Mark A. Hershberger 2012-02-25 18:23:50 UTC

I wonder if similar problems could be causing bug 34664

Comment 3 Mark A. Hershberger 2012-02-25 20:56:26 UTC

(In reply to comment #0)
> When running CentralNotice on trunk with debug=true,

Since you say this is trunk, changing the version.

Comment 4 Ryan Kaldari 2012-02-29 20:04:33 UTC

Just saw this happen without debug=true on test.wikipedia.org. Raising severity.

Roan said this was related to work that he and Krinkle recently did on ResourceLoader, and he has a solution for it.

Comment 5 Ryan Kaldari 2012-02-29 20:42:40 UTC

Also, this may be unique to Firefox.

Comment 6 Krinkle 2012-02-29 21:10:53 UTC

Assigning to Roan per comment 4

Comment 7 Ryan Kaldari 2012-03-07 23:54:34 UTC

Created attachment 10195 [details]
Patch to fix callback bug

Comment 8 Ryan Kaldari 2012-03-12 12:50:20 UTC

Patch (based on Roan's analysis) committed in r113617. If anything else is needed, please reopen.

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