Merge 78077 - 2011-02-08 Dimitri Glazkov <dglazkov@chromium.org>...

Source/WebCore/dom/Node.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 2821 matching lines @@
     if (sendMouseEvents)
         dispatchSimulatedMouseEvent(eventNames().mouseupEvent, event.get());
     setActive(false);
 
     // always send click
     dispatchSimulatedMouseEvent(eventNames().clickEvent, event);
     
     gNodesDispatchingSimulatedClicks->remove(this);
 }
 
+// FIXME: Once https://bugs.webkit.org/show_bug.cgi?id=52963 lands, this should
+// be greatly improved. See https://bugs.webkit.org/show_bug.cgi?id=54025.
+static Node* pullOutOfShadow(Node* node)
+{
+    Node* outermostShadowBoundary = node;
+    for (Node* n = node; n; n = n->parentOrHostNode()) {
+        if (n->isShadowRoot())
+            outermostShadowBoundary = n->parentOrHostNode();
+    }
+    return outermostShadowBoundary;
+}
+
 bool Node::dispatchMouseEvent(const AtomicString& eventType, int button, int detail,
     int pageX, int pageY, int screenX, int screenY,
     bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, 
     bool isSimulated, Node* relatedTargetArg, PassRefPtr<Event> underlyingEvent)
 {
     ASSERT(!eventDispatchForbidden());
     if (disabled()) // Don't even send DOM events for disabled controls..
         return true;
     
     if (eventType.isEmpty())
         return false; // Shouldn't happen.
     
     // Dispatching the first event can easily result in this node being destroyed.
     // Since we dispatch up to three events here, we need to make sure we're referenced
     // so the pointer will be good for the two subsequent ones.
     RefPtr<Node> protect(this);
     
     bool cancelable = eventType != eventNames().mousemoveEvent;
     
     bool swallowEvent = false;
     
     // Attempting to dispatch with a non-EventTarget relatedTarget causes the relatedTarget to be silently ignored.
-    RefPtr<Node> relatedTarget = relatedTargetArg;
+    RefPtr<Node> relatedTarget = pullOutOfShadow(relatedTargetArg);
 
     int adjustedPageX = pageX;
     int adjustedPageY = pageY;
     if (Frame* frame = document()->frame()) {
         float pageZoom = frame->pageZoomFactor();
         if (pageZoom != 1.0f) {
             // Adjust our pageX and pageY to account for the page zoom.
             adjustedPageX = lroundf(pageX / pageZoom);
             adjustedPageY = lroundf(pageY / pageZoom);
         }
@@ skipping 164 matching lines @@
 
 #ifndef NDEBUG
 
 void showTree(const WebCore::Node* node)
 {
     if (node)
         node->showTreeForThis();
 }
 
 #endif