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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.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * 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 InsertionPoint_h
#define InsertionPoint_h
#include "core/css/CSSSelectorList.h"
#include "core/dom/shadow/ContentDistribution.h"
#include "core/html/HTMLElement.h"
#include "wtf/Forward.h"
namespace WebCore {
class InsertionPoint : public HTMLElement {
public:
virtual ~InsertionPoint();
bool hasDistribution() const { return !m_distribution.isEmpty(); }
void setDistribution(ContentDistribution&);
void clearDistribution() { m_distribution.clear(); }
bool isActive() const;
PassRefPtr<NodeList> getDistributedNodes();
virtual bool canAffectSelector() const { return false; }
bool resetStyleInheritance() const;
void setResetStyleInheritance(bool);
virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
virtual void detach(const AttachContext& = AttachContext()) OVERRIDE;
bool shouldUseFallbackElements() const;
size_t size() const { return m_distribution.size(); }
Node* at(size_t index) const { return m_distribution.at(index).get(); }
Node* first() const { return m_distribution.isEmpty() ? 0 : m_distribution.first().get(); }
Node* last() const { return m_distribution.isEmpty() ? 0 : m_distribution.last().get(); }
Node* nextTo(const Node* node) const { return m_distribution.nextTo(node); }
Node* previousTo(const Node* node) const { return m_distribution.previousTo(node); }
protected:
InsertionPoint(const QualifiedName&, Document*);
virtual bool rendererIsNeeded(const NodeRenderingContext&) OVERRIDE;
virtual void childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta) OVERRIDE;
virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
virtual void removedFrom(ContainerNode*) OVERRIDE;
virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
virtual void willRecalcStyle(StyleChange) OVERRIDE;
private:
ContentDistribution m_distribution;
bool m_registeredWithShadowRoot;
};
inline InsertionPoint* toInsertionPoint(Node* node)
{
ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isInsertionPoint());
return static_cast<InsertionPoint*>(node);
}
inline const InsertionPoint* toInsertionPoint(const Node* node)
{
ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isInsertionPoint());
return static_cast<const InsertionPoint*>(node);
}
inline bool isActiveInsertionPoint(const Node* node)
{
return node->isInsertionPoint() && toInsertionPoint(node)->isActive();
}
inline Node* parentNodeForDistribution(const Node* node)
{
ASSERT(node);
if (Node* parent = node->parentNode()) {
if (parent->isInsertionPoint() && toInsertionPoint(parent)->shouldUseFallbackElements())
return parent->parentNode();
return parent;
}
return 0;
}
inline Element* parentElementForDistribution(const Node* node)
{
if (Node* parent = parentNodeForDistribution(node)) {
if (parent->isElementNode())
return toElement(parent);
}
return 0;
}
inline ElementShadow* shadowOfParentForDistribution(const Node* node)
{
ASSERT(node);
if (Element* parent = parentElementForDistribution(node))
return parent->shadow();
return 0;
}
InsertionPoint* resolveReprojection(const Node*);
void collectInsertionPointsWhereNodeIsDistributed(const Node*, Vector<InsertionPoint*, 8>& results);
} // namespace WebCore
#endif // InsertionPoint_h