[Webkit-unassigned] [Bug 52577] New: Incomplete beforeload event support

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=52577

           Summary: Incomplete beforeload event support
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
               URL: http://www.nearinfinity.com/blogs/jeff_kunkle/lessons_
                    learned_building_an_ht.html
        OS/Version: Mac OS X 10.6
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kunklejr at yahoo.com


The beforeload event in Webkit is extremely useful for things like blocking images or JavaScript from loading, but it's implementation is incomplete. For example, there is no beforeload event fired for link tags with rel=icon, rel=prefetch, or rel=dns-prefetch, no beforeload event for XMLHttpRequest calls, no beforeload event for any images loaded from stylesheet references, and no beforeload event prior to the default favicon being requested.

Please see the provided URL for a short discussion on the issues this presented while attempting to build a Safari extension similar to the HTTPS Everywhere Firefox extension developed by the EFF. Ideally, it would be great to have a beforeload event fired for any network request, regardless of the resource type being requested.

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