[Webkit-unassigned] [Bug 228271] New: WKUserContentController.removeAllScriptMessageHandlers() doesn't remove the message handlers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=228271

            Bug ID: 228271
           Summary: WKUserContentController.removeAllScriptMessageHandlers
                    () doesn't remove the message handlers
           Product: WebKit
           Version: Safari 14
          Hardware: All
                OS: macOS 11
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: zero.griffin at gmail.com
                CC: kkinnunen at apple.com

Trying to remove all message handlers from a WKUserContentController using removeAllScriptMessageHandlers() doesn't seem to be working.

There is not an API to view all message handlers from a WKUserContentController, but I have noticed that trying to remove all of them using removeAllScriptMessageHandlers() doesn't release those handlers, as by adding them, the WKUserContentController seems to retain them.

This I can reproduce 100% of the time. And in comparison, using removeScriptMessageHandler(forName:) seems to be working fine, and the message handlers gets released.

Having a removeAllScriptMessageHandlers() is specially helpful when, like in my case, you have many different message handlers, with different names.

If necessary I can provide with a small working prototype to test it.

Cheers.

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