94 lines
3.7 KiB
C++
94 lines
3.7 KiB
C++
/*
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* Copyright (C) 2016-2017 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "HTMLSlotElement.h"
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#include "ShadowRoot.h"
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#include "StyleResolver.h"
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#include "StyleScope.h"
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#include "StyleScopeRuleSets.h"
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namespace WebCore {
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namespace Style {
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template <typename TraverseFunction>
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inline void traverseRuleFeaturesInShadowTree(Element& element, TraverseFunction&& function)
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{
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if (!element.shadowRoot())
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return;
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auto& shadowRuleSets = element.shadowRoot()->styleScope().resolver().ruleSets();
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auto& authorStyle = shadowRuleSets.authorStyle();
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bool hasHostPseudoClassRulesMatchingInShadowTree = authorStyle.hasHostPseudoClassRulesMatchingInShadowTree();
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if (authorStyle.hostPseudoClassRules().isEmpty() && !hasHostPseudoClassRulesMatchingInShadowTree)
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return;
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function(shadowRuleSets.features(), hasHostPseudoClassRulesMatchingInShadowTree);
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}
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template <typename TraverseFunction>
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inline void traverseRuleFeaturesForSlotted(Element& element, TraverseFunction&& function)
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{
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auto assignedShadowRoots = assignedShadowRootsIfSlotted(element);
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for (auto& assignedShadowRoot : assignedShadowRoots) {
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auto& ruleSets = assignedShadowRoot->styleScope().resolver().ruleSets();
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if (ruleSets.authorStyle().slottedPseudoElementRules().isEmpty())
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continue;
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function(ruleSets.features(), false);
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}
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}
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template <typename TraverseFunction>
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inline void traverseRuleFeatures(Element& element, TraverseFunction&& function)
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{
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auto& ruleSets = element.styleResolver().ruleSets();
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auto mayAffectShadowTree = [&] {
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if (element.shadowRoot() && element.shadowRoot()->isUserAgentShadowRoot()) {
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if (ruleSets.authorStyle().hasShadowPseudoElementRules())
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return true;
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#if ENABLE(VIDEO)
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if (element.isMediaElement() && !ruleSets.authorStyle().cuePseudoRules().isEmpty())
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return true;
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#endif
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}
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if (is<HTMLSlotElement>(element) && !ruleSets.authorStyle().slottedPseudoElementRules().isEmpty())
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return true;
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return false;
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};
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function(ruleSets.features(), mayAffectShadowTree());
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traverseRuleFeaturesInShadowTree(element, function);
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traverseRuleFeaturesForSlotted(element, function);
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// Ensure that the containing tree resolver also exists so it doesn't get created in the middle of invalidation.
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if (element.isInShadowTree())
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Style::Scope::forNode(*element.containingShadowRoot()->host()).resolver();
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}
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}
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}
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