/* * Copyright (C) 2013 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 "Document.h" #include "Element.h" namespace WebCore { class ElementIteratorAssertions { public: ElementIteratorAssertions(); ElementIteratorAssertions(const Element* first); bool domTreeHasMutated() const; void dropEventDispatchAssertion(); private: const Document* m_document; uint64_t m_initialDOMTreeVersion; OwnPtr<NoEventDispatchAssertion> m_noEventDispatchAssertion; }; inline ElementIteratorAssertions::ElementIteratorAssertions() : m_document(nullptr) , m_initialDOMTreeVersion(0) { } inline ElementIteratorAssertions::ElementIteratorAssertions(const Element* first) : m_document(first ? &first->document() : nullptr) , m_initialDOMTreeVersion(m_document ? m_document->domTreeVersion() : 0) , m_noEventDispatchAssertion(m_document ? adoptPtr(new NoEventDispatchAssertion) : nullptr) { } inline bool ElementIteratorAssertions::domTreeHasMutated() const { return m_initialDOMTreeVersion && m_document && m_document->domTreeVersion() != m_initialDOMTreeVersion; } inline void ElementIteratorAssertions::dropEventDispatchAssertion() { m_noEventDispatchAssertion = nullptr; } } #endif