CODEWITHSUNDEEP
firefoxfirefox-addoncomponentsoverriding
user1329904
user1329904

Reputation: 11

override firefox components

I was wondering if anyone knows how to override firefox components. I have tried to override the nsHelperAppDlg.js using the manifest file but it didn't seem to work. This is what I did:

override resource:///components/nsHelperAppDlg.js myextension/components/nsHelperAppDlg.js

I've also tried to modify that file straight from the omni.ja file but that didn't work either. Any ideas?

P.S I'm using Firefox 10.0.2

Upvotes: 0

Views: 705

Answers (1)

Wladimir Palant
Wladimir Palant

Reputation: 57691

With the manifest you can only override chrome:// URLs. XPCOM components aren't accessed via chrome:// URLs but rather their contract IDs (@mozilla.org/helperapplauncherdialog;1 in this case). But I suspect that you don't really want to replace the component - it is rarely a good idea. You probably want to override or overlay the "unknown file type" dialog. The URL of this dialog is chrome://mozapps/content/downloads/unknownContentType.xul and you can override it, like this:

override chrome://mozapps/content/downloads/unknownContentType.xul chrome://myextension/content/unknownContentType.xul

Upvotes: 2

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