Made Blink tooltip ShadowDOM-aware

Source/core/rendering/HitTestResult.cpp

 /*
  * Copyright (C) 2006, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
 */
 
 #include "config.h"
 #include "core/rendering/HitTestResult.h"
 
 #include "HTMLNames.h"
 #include "core/dom/DocumentMarkerController.h"
+#include "core/dom/shadow/ShadowRoot.h"
 #include "core/editing/Editor.h"
 #include "core/editing/FrameSelection.h"
 #include "core/html/HTMLAnchorElement.h"
 #include "core/html/HTMLImageElement.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/HTMLPlugInImageElement.h"
 #include "core/html/HTMLVideoElement.h"
 #include "core/html/parser/HTMLParserIdioms.h"
 #include "core/loader/cache/CachedImage.h"
@@ skipping 68 matching lines @@
     m_innerURLElement = other.URLElement();
     m_scrollbar = other.scrollbar();
     m_isOverWidget = other.isOverWidget();
 
     // Only copy the NodeSet in case of rect hit test.
     m_rectBasedTestResult = adoptPtr(other.m_rectBasedTestResult ? new NodeSet(*other.m_rectBasedTestResult) : 0);
 
     return *this;
 }
 
-void HitTestResult::setToNonShadowAncestor()
+void HitTestResult::setToNodesInDocumentTreeScope()

[dglazkov, 2013/05/13 16:11:42]

It's not necessarily document tree scope, right? You're just looking one up?

 {
-    Node* node = innerNode();
-    if (node)
+    if (Node* node = innerNode()) {
         node = node->document()->ancestorInThisScope(node);

[Hajime Morrita, 2013/05/14 00:13:53]

This asks document()->ancestorInThisScope(), which has while() in it.

-    setInnerNode(node);
-    node = innerNonSharedNode();
-    if (node)
+        setInnerNode(node);
+    }
+
+    if (Node* node = innerNonSharedNode()) {
         node = node->document()->ancestorInThisScope(node);
-    setInnerNonSharedNode(node);
+        setInnerNonSharedNode(node);
+    }
+}
+
+void HitTestResult::setToShadowHostIfInUserAgentShadowRoot()
+{
+    if (Node* node = innerNode()) {
+        if (ShadowRoot* containingShadowRoot = node->containingShadowRoot()) {
+            if (containingShadowRoot->type() == ShadowRoot::UserAgentShadowRoot)
+                setInnerNode(node->shadowHost());
+        }
+    }
+
+    if (Node* node = innerNonSharedNode()) {
+        if (ShadowRoot* containingShadowRoot = node->containingShadowRoot()) {
+            if (containingShadowRoot->type() == ShadowRoot::UserAgentShadowRoot)
+                setInnerNonSharedNode(node->shadowHost());
+        }
+    }
 }
 
 void HitTestResult::setInnerNode(Node* n)
 {
     if (n && n->isPseudoElement())
         n = n->parentOrShadowHostNode();
     m_innerNode = n;
 }
     
 void HitTestResult::setInnerNonSharedNode(Node* n)
@@ skipping 459 matching lines @@
 {
     for (Node* node = m_innerNode.get(); node; node = node->parentNode()) {
         if (node->isElementNode())
             return toElement(node);
     }
 
     return 0;
 }
 
 } // namespace WebCore