85 lines
3.5 KiB
C++
85 lines
3.5 KiB
C++
/*
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* Copyright (C) 2020 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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#include "config.h"
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#include "PseudoClassChangeInvalidation.h"
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#include "ElementChildIterator.h"
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#include "StyleInvalidationFunctions.h"
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namespace WebCore {
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namespace Style {
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void PseudoClassChangeInvalidation::computeInvalidation(CSSSelector::PseudoClassType pseudoClass, InvalidationScope invalidationScope)
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{
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bool shouldInvalidateCurrent = false;
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bool mayAffectStyleInShadowTree = false;
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traverseRuleFeatures(m_element, [&] (const RuleFeatureSet& features, bool mayAffectShadowTree) {
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if (mayAffectShadowTree && features.pseudoClassRules.contains(pseudoClass))
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mayAffectStyleInShadowTree = true;
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if (m_element.shadowRoot() && features.pseudoClassesAffectingHost.contains(pseudoClass))
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shouldInvalidateCurrent = true;
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});
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if (mayAffectStyleInShadowTree) {
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// FIXME: We should do fine-grained invalidation for shadow tree.
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m_element.invalidateStyleForSubtree();
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}
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if (shouldInvalidateCurrent)
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m_element.invalidateStyle();
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auto& ruleSets = m_element.styleResolver().ruleSets();
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if (auto* invalidationRuleSets = ruleSets.pseudoClassInvalidationRuleSets(pseudoClass)) {
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for (auto& invalidationRuleSet : *invalidationRuleSets) {
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// For focus/hover we flip the whole ancestor chain. We only need to do deep invalidation traversal in the change root.
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auto shouldInvalidate = [&] {
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switch (invalidationScope) {
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case InvalidationScope::All:
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return true;
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case InvalidationScope::SelfChildrenAndSiblings:
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return invalidationRuleSet.matchElement != MatchElement::Ancestor;
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case InvalidationScope::Descendants:
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return invalidationRuleSet.matchElement == MatchElement::Ancestor;
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}
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ASSERT_NOT_REACHED();
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return true;
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}();
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if (!shouldInvalidate)
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continue;
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Invalidator::addToMatchElementRuleSets(m_matchElementRuleSets, invalidationRuleSet);
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}
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}
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}
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void PseudoClassChangeInvalidation::invalidateStyleWithRuleSets()
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{
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Invalidator::invalidateWithMatchElementRuleSets(m_element, m_matchElementRuleSets);
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}
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}
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}
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