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/*
* 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, 2011 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/)
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* 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 "ContainerNodeAlgorithms.h"
#include "Element.h"
#include "ElementShadow.h"
#include "HTMLFrameOwnerElement.h"
namespace WebCore {
void ChildNodeInsertionNotifier::notifyDescendantInsertedIntoDocument(ContainerNode* node)
{
ChildNodesLazySnapshot snapshot(node);
while (RefPtr<Node> child = snapshot.nextNode()) {
// If we have been removed from the document during this loop, then
// we don't want to tell the rest of our children that they've been
// inserted into the document because they haven't.
if (node->inDocument() && child->parentNode() == node)
notifyNodeInsertedIntoDocument(child.get());
}
if (!node->isElementNode())
return;
if (ElementShadow* shadow = toElement(node)->shadow()) {
if (RefPtr<ShadowRoot> root = shadow->shadowRoot()) {
if (node->inDocument() && root->host() == node)
notifyNodeInsertedIntoDocument(root.get());
}
}
}
void ChildNodeInsertionNotifier::notifyDescendantInsertedIntoTree(ContainerNode* node)
{
for (Node* child = node->firstChild(); child; child = child->nextSibling()) {
if (child->isContainerNode())
notifyNodeInsertedIntoTree(toContainerNode(child));
}
if (ShadowRoot* root = node->shadowRoot())
notifyNodeInsertedIntoTree(root);
}
void ChildNodeRemovalNotifier::notifyDescendantRemovedFromDocument(ContainerNode* node)
{
ChildNodesLazySnapshot snapshot(node);
while (RefPtr<Node> child = snapshot.nextNode()) {
// If we have been added to the document during this loop, then we
// don't want to tell the rest of our children that they've been
// removed from the document because they haven't.
if (!node->inDocument() && child->parentNode() == node)
notifyNodeRemovedFromDocument(child.get());
}
if (!node->isElementNode())
return;
if (node->document()->cssTarget() == node)
node->document()->setCSSTarget(0);
if (ElementShadow* shadow = toElement(node)->shadow()) {
if (RefPtr<ShadowRoot> root = shadow->shadowRoot()) {
if (!node->inDocument() && root->host() == node)
notifyNodeRemovedFromDocument(root.get());
}
}
}
void ChildNodeRemovalNotifier::notifyDescendantRemovedFromTree(ContainerNode* node)
{
for (Node* child = node->firstChild(); child; child = child->nextSibling()) {
if (child->isContainerNode())
notifyNodeRemovedFromTree(toContainerNode(child));
}
if (!node->isElementNode())
return;
if (ElementShadow* shadow = toElement(node)->shadow()) {
if (RefPtr<ShadowRoot> root = shadow->shadowRoot())
notifyNodeRemovedFromTree(root.get());
}
}
void ChildFrameDisconnector::collectFrameOwners(ElementShadow* shadow)
{
if (ShadowRoot* root = shadow->shadowRoot())
collectFrameOwners(root);
}
#ifndef NDEBUG
unsigned assertConnectedSubrameCountIsConsistent(Node* node)
{
unsigned count = 0;
if (node->isElementNode()) {
if (node->isFrameOwnerElement() && toFrameOwnerElement(node)->contentFrame())
count++;
if (ElementShadow* shadow = toElement(node)->shadow()) {
if (ShadowRoot* root = shadow->shadowRoot())
count += assertConnectedSubrameCountIsConsistent(root);
}
}
for (Node* child = node->firstChild(); child; child = child->nextSibling())
count += assertConnectedSubrameCountIsConsistent(child);
// If we undercount there's possibly a security bug since we'd leave frames
// in subtrees outside the document.
ASSERT(node->connectedSubframeCount() >= count);
// If we overcount it's safe, but not optimal because it means we'll traverse
// through the document in ChildFrameDisconnector looking for frames that have
// already been disconnected.
ASSERT(node->connectedSubframeCount() == count);
return count;
}
#endif
}
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