[Webkit-unassigned] [Bug 63945] New: [WK2] IconDatabase: Add a way to notify when icon data is available

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=63945

           Summary: [WK2] IconDatabase: Add a way to notify when icon data
                    is available
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: cgarcia at igalia.com
                CC: andersca at apple.com, beidson at apple.com


Currently WebIconDatabaseClient uses a single callback, didChangeIconForPageURL(), called when the icon has changed in the database. WebIconDatabase uses that callback when the icon data is available too. The problem is that didImportIconDataForPageURL() is never called in WebKit2 when the icon is already in the database, because when imported the list of pages interested in icons is empty. In Webkit1 we use FrameLoaderClient::dispatchDidReceiveIcon(), called when the icon has just been loaded or when it was in the database and the data was already available, and FrameLoaderClient::registerForIconNotification() called when the icon was in the database but the data wasn't available yet. Both methods are currently unimplemented in WebKit2, but I'm not sure the same approach of WebKit1 is the right one for WebKit2.

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