Traverse subframes during PrintContext::outputLinkAndLinkedDestinations()

Source/core/page/PrintContext.cpp

 /*
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2007 Apple Inc.
  *
  * 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,
@@ skipping 218 matching lines @@
         return;
     const AtomicString& href = toElement(node)->getAttribute(HTMLNames::hrefAttr);
     if (href.isNull())
         return;
     KURL url = node->document().completeURL(href);
     if (!url.isValid())
         return;
 
     bool linkIsValid = true;
     if (url.hasFragmentIdentifier() && equalIgnoringFragmentIdentifier(url, node->document().baseURL())) {
-        String name = url.fragmentIdentifier();
-        Element* element = node->document().findAnchor(name);
-        if (element)
-            m_linkedDestinations.set(name, element);
-        else
+        // Only output anchors and links to anchors in the top-level frame because our PrintContext
+        // supports only one namespace for the anchors.
+        if (node->document().frame() == m_frame.get()) {
+            String name = url.fragmentIdentifier();
+            if (Element* element = node->document().findAnchor(name))
+                m_linkedDestinations.set(name, element);
+            else
+                linkIsValid = false;
+        } else {
             linkIsValid = false;
+        }
     }
 
     if (linkIsValid)
         m_linkDestinations.set(toElement(node), url);
 }
 
-void PrintContext::outputLinkAndLinkedDestinations(GraphicsContext& graphicsContext, Node* node, const IntRect& pageRect)
+void PrintContext::outputLinkAndLinkedDestinations(GraphicsContext& graphicsContext, const IntRect& pageRect)
 {
     if (!m_linkAndLinkedDestinationsValid) {
-        collectLinkAndLinkedDestinations(node);
+        for (Frame* currentFrame = frame(); currentFrame; currentFrame = currentFrame->tree().traverseNext(frame())) {
+            if (currentFrame->isLocalFrame())
+                collectLinkAndLinkedDestinations(toLocalFrame(currentFrame)->document());
+        }
         m_linkAndLinkedDestinationsValid = true;
     }
 
     for (const auto& entry : m_linkDestinations) {
         LayoutObject* renderer = entry.key->renderer();
         if (!renderer)
             continue;
         KURL url = entry.value;
         IntRect boundingBox = renderer->absoluteBoundingBoxRect();
         if (!pageRect.intersects(boundingBox))
@@ skipping 77 matching lines @@
 void PrintContext::trace(Visitor* visitor)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_frame);
     visitor->trace(m_linkDestinations);
     visitor->trace(m_linkedDestinations);
 #endif
 }
 
 }