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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
* 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:
* 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. AND ITS 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 APPLE INC. OR ITS 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 ScopedStyleResolver_h
#define ScopedStyleResolver_h
#include "core/css/ElementRuleCollector.h"
#include "core/css/RuleSet.h"
#include "core/dom/ContainerNode.h"
#include "wtf/HashMap.h"
#include "wtf/HashSet.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassOwnPtr.h"
namespace WebCore {
class MediaQueryEvaluator;
class PageRuleCollector;
class StyleSheetContents;
// This class selects a RenderStyle for a given element based on a collection of stylesheets.
class ScopedStyleResolver {
WTF_MAKE_NONCOPYABLE(ScopedStyleResolver); WTF_MAKE_FAST_ALLOCATED;
public:
static PassOwnPtr<ScopedStyleResolver> create(ContainerNode& scopingNode) { return adoptPtr(new ScopedStyleResolver(scopingNode)); }
static ContainerNode* scopingNodeFor(Document&, const CSSStyleSheet*);
const ContainerNode& scopingNode() const { return m_scopingNode; }
const TreeScope& treeScope() const { return m_scopingNode.treeScope(); }
void setParent(ScopedStyleResolver* newParent) { m_parent = newParent; }
ScopedStyleResolver* parent() { return m_parent; }
public:
const StyleRuleKeyframes* keyframeStylesForAnimation(const StringImpl* animationName);
void addKeyframeStyle(PassRefPtrWillBeRawPtr<StyleRuleKeyframes>);
void collectMatchingAuthorRules(ElementRuleCollector&, bool includeEmptyRules, bool applyAuthorStyles, CascadeScope, CascadeOrder = ignoreCascadeOrder);
void matchPageRules(PageRuleCollector&);
void addRulesFromSheet(CSSStyleSheet*, const MediaQueryEvaluator&, StyleResolver*);
void collectFeaturesTo(RuleFeatureSet&, HashSet<const StyleSheetContents*>& visitedSharedStyleSheetContents);
void resetAuthorStyle();
void collectViewportRulesTo(StyleResolver*) const;
private:
explicit ScopedStyleResolver(ContainerNode& scopingNode) : m_scopingNode(scopingNode), m_parent(0) { }
ContainerNode& m_scopingNode;
ScopedStyleResolver* m_parent;
WillBePersistentHeapVector<RawPtrWillBeMember<CSSStyleSheet> > m_authorStyleSheets;
typedef WillBePersistentHeapHashMap<const StringImpl*, RefPtrWillBeMember<StyleRuleKeyframes> > KeyframesRuleMap;
KeyframesRuleMap m_keyframesRuleMap;
};
} // namespace WebCore
#endif // ScopedStyleResolver_h
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