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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 THIRD_PARTY_BLINK_RENDERER_CORE_DOM_PSEUDO_ELEMENT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_DOM_PSEUDO_ELEMENT_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/platform/wtf/casting.h"
namespace blink {
class ComputedStyle;
class CORE_EXPORT PseudoElement : public Element {
public:
static PseudoElement* Create(Element* parent, PseudoId);
PseudoElement(Element*, PseudoId);
scoped_refptr<ComputedStyle> CustomStyleForLayoutObject() override;
void AttachLayoutTree(AttachContext&) override;
bool LayoutObjectIsNeeded(const ComputedStyle&) const override;
bool CanGeneratePseudoElement(PseudoId) const override;
bool CanStartSelection() const override { return false; }
bool CanContainRangeEndPoint() const override { return false; }
PseudoId GetPseudoId() const override { return pseudo_id_; }
scoped_refptr<ComputedStyle> LayoutStyleForDisplayContents(
const ComputedStyle&);
static const AtomicString& PseudoElementNameForEvents(PseudoId);
// Pseudo element are not allowed to be the inner node for hit testing. Find
// the closest ancestor which is a real dom node.
virtual Node* InnerNodeForHitTesting() const;
virtual void Dispose();
private:
class AttachLayoutTreeScope {
STACK_ALLOCATED();
public:
AttachLayoutTreeScope(PseudoElement*);
~AttachLayoutTreeScope();
private:
PseudoElement* element_;
scoped_refptr<const ComputedStyle> original_style_;
};
PseudoId pseudo_id_;
};
const QualifiedName& PseudoElementTagName(PseudoId);
bool PseudoElementLayoutObjectIsNeeded(const ComputedStyle* pseudo_style,
const Element* originating_element);
template <>
struct DowncastTraits<PseudoElement> {
static bool AllowFrom(const Node& node) { return node.IsPseudoElement(); }
};
} // namespace blink
#endif
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