99 lines
4.3 KiB
C++
99 lines
4.3 KiB
C++
/*
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* Copyright (C) Research In Motion Limited 2010. 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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#pragma once
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#include "StyleProperties.h"
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#include "StyleResolver.h"
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#include <wtf/HashSet.h>
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#include <wtf/Noncopyable.h>
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#include <wtf/StdLibExtras.h>
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namespace WebCore {
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class CSSCursorImageValue;
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class SVGCursorElement;
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class SVGElement;
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class SVGElementRareData {
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WTF_MAKE_NONCOPYABLE(SVGElementRareData); WTF_MAKE_FAST_ALLOCATED;
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public:
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SVGElementRareData()
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: m_instancesUpdatesBlocked(false)
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, m_useOverrideComputedStyle(false)
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, m_needsOverrideComputedStyleUpdate(false)
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{
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}
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void addInstance(SVGElement& element) { m_instances.add(element); }
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void removeInstance(SVGElement& element) { m_instances.remove(element); }
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const WeakHashSet<SVGElement>& instances() const { return m_instances; }
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bool instanceUpdatesBlocked() const { return m_instancesUpdatesBlocked; }
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void setInstanceUpdatesBlocked(bool value) { m_instancesUpdatesBlocked = value; }
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void addReferencingElement(SVGElement& element) { m_referencingElements.add(element); }
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void removeReferencingElement(SVGElement& element) { m_referencingElements.remove(element); }
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const WeakHashSet<SVGElement>& referencingElements() const { return m_referencingElements; }
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WeakHashSet<SVGElement> takeReferencingElements() { return std::exchange(m_referencingElements, { }); }
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SVGElement* referenceTarget() const { return m_referenceTarget.get(); }
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void setReferenceTarget(WeakPtr<SVGElement>&& element) { m_referenceTarget = WTFMove(element); }
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SVGElement* correspondingElement() { return m_correspondingElement.get(); }
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void setCorrespondingElement(SVGElement* correspondingElement) { m_correspondingElement = makeWeakPtr(correspondingElement); }
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MutableStyleProperties* animatedSMILStyleProperties() const { return m_animatedSMILStyleProperties.get(); }
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MutableStyleProperties& ensureAnimatedSMILStyleProperties()
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{
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if (!m_animatedSMILStyleProperties)
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m_animatedSMILStyleProperties = MutableStyleProperties::create(SVGAttributeMode);
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return *m_animatedSMILStyleProperties;
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}
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const RenderStyle* overrideComputedStyle(Element& element, const RenderStyle* parentStyle)
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{
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if (!m_useOverrideComputedStyle)
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return nullptr;
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if (!m_overrideComputedStyle || m_needsOverrideComputedStyleUpdate) {
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// The style computed here contains no CSS Animations/Transitions or SMIL induced rules - this is needed to compute the "base value" for the SMIL animation sandwhich model.
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m_overrideComputedStyle = element.styleResolver().styleForElement(element, parentStyle, nullptr, RuleMatchingBehavior::MatchAllRulesExcludingSMIL).renderStyle;
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m_needsOverrideComputedStyleUpdate = false;
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}
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ASSERT(m_overrideComputedStyle);
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return m_overrideComputedStyle.get();
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}
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bool useOverrideComputedStyle() const { return m_useOverrideComputedStyle; }
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void setUseOverrideComputedStyle(bool value) { m_useOverrideComputedStyle = value; }
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void setNeedsOverrideComputedStyleUpdate() { m_needsOverrideComputedStyleUpdate = true; }
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private:
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WeakHashSet<SVGElement> m_referencingElements;
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WeakPtr<SVGElement> m_referenceTarget;
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WeakHashSet<SVGElement> m_instances;
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WeakPtr<SVGElement> m_correspondingElement;
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bool m_instancesUpdatesBlocked : 1;
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bool m_useOverrideComputedStyle : 1;
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bool m_needsOverrideComputedStyleUpdate : 1;
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RefPtr<MutableStyleProperties> m_animatedSMILStyleProperties;
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std::unique_ptr<RenderStyle> m_overrideComputedStyle;
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};
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} // namespace WebCore
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