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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ElementShadow_h
#define ElementShadow_h
#include "ContentDistributor.h"
#include "ExceptionCode.h"
#include "ShadowRoot.h"
#include <wtf/Noncopyable.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/PassRefPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class ElementShadow {
WTF_MAKE_NONCOPYABLE(ElementShadow); WTF_MAKE_FAST_ALLOCATED;
public:
static PassOwnPtr<ElementShadow> create()
{
return adoptPtr(new ElementShadow());
}
~ElementShadow()
{
removeShadowRoot();
}
Element* host() const;
ShadowRoot* shadowRoot() const { return m_shadowRoot.get(); }
ElementShadow* containingShadow() const;
ShadowRoot* addShadowRoot(Element* shadowHost, ShadowRoot::ShadowRootType);
void attach(const Node::AttachContext&);
void detach(const Node::AttachContext&);
bool childNeedsStyleRecalc() const;
bool needsStyleRecalc() const;
void recalcStyle(Node::StyleChange);
void removeAllEventListeners();
void invalidateDistribution() { m_distributor.invalidateDistribution(host()); }
ContentDistributor& distributor() { return m_distributor; }
const ContentDistributor& distributor() const { return m_distributor; }
private:
ElementShadow() { }
void removeShadowRoot();
RefPtr<ShadowRoot> m_shadowRoot;
ContentDistributor m_distributor;
};
inline Element* ElementShadow::host() const
{
ASSERT(m_shadowRoot);
return m_shadowRoot->host();
}
inline ShadowRoot* Node::shadowRoot() const
{
if (!this->isElementNode())
return 0;
if (ElementShadow* shadow = toElement(this)->shadow())
return shadow->shadowRoot();
return 0;
}
inline ElementShadow* ElementShadow::containingShadow() const
{
if (ShadowRoot* parentRoot = host()->containingShadowRoot())
return parentRoot->owner();
return 0;
}
inline ElementShadow* shadowOfParent(const Node* node)
{
if (!node)
return 0;
if (Node* parent = node->parentNode())
if (parent->isElementNode())
return toElement(parent)->shadow();
return 0;
}
} // namespace
#endif
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