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29ce4f5a9a
We now store the bits about what was matched inside the SelectorChecker and map them to operations that mutate the style after matching the selector. This eliminates the SelectorChecker::Mode. R=ojan@chromium.org Review URL: https://codereview.chromium.org/840163003
110 lines
4.1 KiB
C++
110 lines
4.1 KiB
C++
/*
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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* (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
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* Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
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* Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
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* Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
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* Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
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* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
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* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
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* Copyright (C) Research In Motion Limited 2011. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef SKY_ENGINE_CORE_CSS_SELECTORCHECKER_H_
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#define SKY_ENGINE_CORE_CSS_SELECTORCHECKER_H_
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#include "sky/engine/core/css/CSSSelector.h"
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#include "sky/engine/core/dom/Element.h"
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namespace blink {
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class CSSSelector;
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class ContainerNode;
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class Element;
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class RenderStyle;
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class SelectorChecker {
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WTF_MAKE_NONCOPYABLE(SelectorChecker);
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public:
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explicit SelectorChecker();
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struct SelectorCheckingContext {
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STACK_ALLOCATED();
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public:
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// Initial selector constructor
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SelectorCheckingContext(const CSSSelector& selector, const Element* element)
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: selector(&selector)
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, element(element)
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, scope(nullptr)
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{
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}
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const CSSSelector* selector;
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const Element* element;
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RawPtr<const ContainerNode> scope;
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};
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bool match(const SelectorCheckingContext&);
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bool matchedAttributeSelector() const { return m_matchedAttributeSelector; }
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bool matchedFocusSelector() const { return m_matchedFocusSelector; }
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bool matchedHoverSelector() const { return m_matchedHoverSelector; }
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bool matchedActiveSelector() const { return m_matchedActiveSelector; }
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static bool tagMatches(const Element&, const QualifiedName&);
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static bool isHostInItsShadowTree(const Element&, const ContainerNode* scope);
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private:
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bool checkPseudoClass(const SelectorCheckingContext&);
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bool checkOne(const SelectorCheckingContext&);
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static bool checkExactAttribute(const Element&, const QualifiedName& selectorAttributeName, const StringImpl* value);
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static bool matchesFocusPseudoClass(const Element&);
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bool m_matchedAttributeSelector;
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bool m_matchedFocusSelector;
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bool m_matchedHoverSelector;
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bool m_matchedActiveSelector;
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};
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inline bool SelectorChecker::tagMatches(const Element& element, const QualifiedName& tagQName)
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{
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const AtomicString& localName = tagQName.localName();
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return localName == starAtom || localName == element.localName();
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}
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inline bool SelectorChecker::checkExactAttribute(const Element& element, const QualifiedName& selectorAttributeName, const StringImpl* value)
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{
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AttributeCollection attributes = element.attributesWithoutUpdate();
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AttributeCollection::iterator end = attributes.end();
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for (AttributeCollection::iterator it = attributes.begin(); it != end; ++it) {
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if (it->matches(selectorAttributeName) && (!value || it->value().impl() == value))
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return true;
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}
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return false;
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}
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inline bool SelectorChecker::isHostInItsShadowTree(const Element& element, const ContainerNode* scope)
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{
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return scope && scope->isInShadowTree() && scope->shadowHost() == element;
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}
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}
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#endif // SKY_ENGINE_CORE_CSS_SELECTORCHECKER_H_
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