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When preceding mouse event is handled, that may cause changing style of the target. Therefore, when an eMouseDown or eMouseUp event is handled, handlers require the latest layout. Currently, nsViewManager::DispatchEvent() tries to guarantee that with calling nsIPresShell::FlushPendingNotifications() with FlushType::Layout. However, this just flushes the pending layout in the PresShell associated with the nsViewManager instance. I.e., if the target is in a child PresShell, its layout hasn't been flushed. This patch makes PresShell::EventHandler::HandleEvent() flush pending notifications at first of handling events using coordinates (only when eMouseDown or eMouseUp, though). Then, when it realizes that the event should be handled in a child PresShell, makes it flush its pending notifications and then, recompute event target with the latest layout if the layout is actually changed. Differential Revision: https://phabricator.services.mozilla.com/D13720 --HG-- extra : moz-landing-system : lando |
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| crashtests | ||
| moz.build | ||
| nsView.cpp | ||
| nsView.h | ||
| nsViewManager.cpp | ||
| nsViewManager.h | ||