26578 2014-08-14 06:46:48 +0000 Register/unregister for certain event interface is incorrect. 2014-08-21 10:07:07 +0000 1 1 1 Unclassified WebRTC Working Group Image Capture API unspecified PC All NEW P2 normal --- 1 ayang public-media-capture adam.bergkvist mandyam public-media-capture oldest_to_newest 110165 0 ayang 2014-08-14 06:46:48 +0000 https://dvcs.w3.org/hg/dap/raw-file/default/media-stream-capture/ImageCapture.html#widl-ImageCapture-onphoto "Register/unregister for photo events of type BlobEvent. The handler should expect to get a BlobEvent object as its first parameter." You don't register for certain event interface, like BlobEvent, you add handler for certain event type. And same event type can be used with many event interfaces. It just means that event.type is "photo". target.dispatchEvent(new MouseEvent("photo")); is perfectly valid. [1] https://bugzilla.mozilla.org/show_bug.cgi?id=916643#c44