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/*
* Copyright (C) 2013-2015 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 ElementIteratorAssertions_h
#define ElementIteratorAssertions_h
#include "Element.h"
namespace WebCore {
class ElementIteratorAssertions {
public:
ElementIteratorAssertions(const Node* first = nullptr);
bool domTreeHasMutated() const;
void dropEventDispatchAssertion();
void clear();
private:
const Document* m_document;
uint64_t m_initialDOMTreeVersion;
Optional<NoEventDispatchAssertion> m_eventDispatchAssertion;
};
// FIXME: No real point in doing these as inlines; they are for debugging and we usually turn off inlining in debug builds.
inline ElementIteratorAssertions::ElementIteratorAssertions(const Node* first)
: m_document(first ? &first->document() : nullptr)
, m_initialDOMTreeVersion(first ? m_document->domTreeVersion() : 0)
{
if (first)
m_eventDispatchAssertion = NoEventDispatchAssertion();
}
inline bool ElementIteratorAssertions::domTreeHasMutated() const
{
return m_document && m_document->domTreeVersion() != m_initialDOMTreeVersion;
}
inline void ElementIteratorAssertions::dropEventDispatchAssertion()
{
m_eventDispatchAssertion = Nullopt;
}
inline void ElementIteratorAssertions::clear()
{
m_document = nullptr;
m_initialDOMTreeVersion = 0;
m_eventDispatchAssertion = Nullopt;
}
}
#endif
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