| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com) |
| * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com) |
| * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved. |
| * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org> |
| * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org> |
| * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) |
| * Copyright (c) 2011, Code Aurora Forum. All rights reserved. |
| * Copyright (C) Research In Motion Limited 2011. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifndef SelectorChecker_h |
| #define SelectorChecker_h |
| |
| #include "core/css/CSSSelector.h" |
| #include "core/dom/Element.h" |
| #include "platform/scroll/ScrollTypes.h" |
| |
| namespace blink { |
| |
| class CSSSelector; |
| class ContainerNode; |
| class Element; |
| class LayoutScrollbar; |
| class ComputedStyle; |
| |
| class SelectorChecker { |
| WTF_MAKE_NONCOPYABLE(SelectorChecker); |
| public: |
| enum VisitedMatchType { VisitedMatchDisabled, VisitedMatchEnabled }; |
| enum Mode { ResolvingStyle = 0, CollectingStyleRules, CollectingCSSRules, QueryingRules, SharingRules }; |
| |
| explicit SelectorChecker(Mode); |
| |
| struct SelectorCheckingContext { |
| STACK_ALLOCATED(); |
| public: |
| // Initial selector constructor |
| SelectorCheckingContext(Element* element, VisitedMatchType visitedMatchType) |
| : selector(0) |
| , element(element) |
| , previousElement(nullptr) |
| , scope(nullptr) |
| , visitedMatchType(visitedMatchType) |
| , pseudoId(NOPSEUDO) |
| , elementStyle(nullptr) |
| , scrollbar(nullptr) |
| , scrollbarPart(NoPart) |
| , isSubSelector(false) |
| , inRightmostCompound(true) |
| , hasScrollbarPseudo(false) |
| , hasSelectionPseudo(false) |
| , isUARule(false) |
| , scopeContainsLastMatchedElement(false) |
| , treatShadowHostAsNormalScope(false) |
| { |
| } |
| |
| const CSSSelector* selector; |
| RawPtrWillBeMember<Element> element; |
| RawPtrWillBeMember<Element> previousElement; |
| RawPtrWillBeMember<const ContainerNode> scope; |
| VisitedMatchType visitedMatchType; |
| PseudoId pseudoId; |
| ComputedStyle* elementStyle; |
| RawPtrWillBeMember<LayoutScrollbar> scrollbar; |
| ScrollbarPart scrollbarPart; |
| bool isSubSelector; |
| bool inRightmostCompound; |
| bool hasScrollbarPseudo; |
| bool hasSelectionPseudo; |
| bool isUARule; |
| bool scopeContainsLastMatchedElement; |
| bool treatShadowHostAsNormalScope; |
| }; |
| |
| struct MatchResult { |
| MatchResult() |
| : dynamicPseudo(NOPSEUDO) |
| , specificity(0) { } |
| |
| PseudoId dynamicPseudo; |
| unsigned specificity; |
| }; |
| |
| bool match(const SelectorCheckingContext&, MatchResult&) const; |
| bool match(const SelectorCheckingContext&) const; |
| |
| static bool matchesFocusPseudoClass(const Element&); |
| |
| private: |
| bool checkOne(const SelectorCheckingContext&, MatchResult&) const; |
| |
| enum Match { SelectorMatches, SelectorFailsLocally, SelectorFailsAllSiblings, SelectorFailsCompletely }; |
| |
| Match matchSelector(const SelectorCheckingContext&, MatchResult&) const; |
| Match matchForSubSelector(const SelectorCheckingContext&, MatchResult&) const; |
| Match matchForRelation(const SelectorCheckingContext&, MatchResult&) const; |
| Match matchForShadowDistributed(const SelectorCheckingContext&, const Element&, MatchResult&) const; |
| Match matchForPseudoShadow(const SelectorCheckingContext&, const ContainerNode*, MatchResult&) const; |
| bool checkPseudoClass(const SelectorCheckingContext&, MatchResult&) const; |
| bool checkPseudoElement(const SelectorCheckingContext&, MatchResult&) const; |
| bool checkScrollbarPseudoClass(const SelectorCheckingContext&, MatchResult&) const; |
| bool checkPseudoHost(const SelectorCheckingContext&, MatchResult&) const; |
| bool checkPseudoNot(const SelectorCheckingContext&, MatchResult&) const; |
| |
| Mode m_mode; |
| }; |
| |
| } |
| |
| #endif |