| /* |
| * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org> |
| * Copyright (C) 2009, 2014 Apple Inc. 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 SVGElement_h |
| #define SVGElement_h |
| |
| #include "core/CoreExport.h" |
| #include "core/SVGNames.h" |
| #include "core/dom/Element.h" |
| #include "core/svg/SVGParsingError.h" |
| #include "core/svg/properties/SVGPropertyInfo.h" |
| #include "platform/heap/Handle.h" |
| #include "wtf/Allocator.h" |
| #include "wtf/HashMap.h" |
| #include "wtf/OwnPtr.h" |
| |
| namespace blink { |
| |
| class AffineTransform; |
| class CSSCursorImageValue; |
| class Document; |
| class SVGAnimatedPropertyBase; |
| class SubtreeLayoutScope; |
| class SVGAnimatedString; |
| class SVGCursorElement; |
| class SVGDocumentExtensions; |
| class SVGElement; |
| class SVGElementRareData; |
| class SVGFitToViewBox; |
| class SVGLength; |
| class SVGSVGElement; |
| class SVGUseElement; |
| |
| typedef WillBeHeapHashSet<RawPtrWillBeMember<SVGElement>> SVGElementSet; |
| |
| class CORE_EXPORT SVGElement : public Element { |
| DEFINE_WRAPPERTYPEINFO(); |
| public: |
| ~SVGElement() override; |
| void attach(const AttachContext&) override; |
| void detach(const AttachContext&) override; |
| |
| short tabIndex() const override; |
| bool supportsFocus() const override { return false; } |
| |
| bool isOutermostSVGSVGElement() const; |
| |
| bool hasTagName(const SVGQualifiedName& name) const { return hasLocalName(name.localName()); } |
| |
| String title() const override; |
| bool hasRelativeLengths() const { return !m_elementsWithRelativeLengths.isEmpty(); } |
| static bool isAnimatableCSSProperty(const QualifiedName&); |
| |
| enum CTMScope { |
| NearestViewportScope, // Used by SVGGraphicsElement::getCTM() |
| ScreenScope, // Used by SVGGraphicsElement::getScreenCTM() |
| AncestorScope // Used by SVGSVGElement::get{Enclosure|Intersection}List() |
| }; |
| virtual AffineTransform localCoordinateSpaceTransform(CTMScope) const; |
| virtual bool needsPendingResourceHandling() const { return true; } |
| |
| bool instanceUpdatesBlocked() const; |
| void setInstanceUpdatesBlocked(bool); |
| |
| SVGSVGElement* ownerSVGElement() const; |
| SVGElement* viewportElement() const; |
| |
| SVGDocumentExtensions& accessDocumentSVGExtensions(); |
| |
| virtual bool isSVGGeometryElement() const { return false; } |
| virtual bool isSVGGraphicsElement() const { return false; } |
| virtual bool isFilterEffect() const { return false; } |
| virtual bool isTextContent() const { return false; } |
| virtual bool isTextPositioning() const { return false; } |
| virtual bool isStructurallyExternal() const { return false; } |
| |
| // For SVGTests |
| virtual bool isValid() const { return true; } |
| |
| virtual void svgAttributeChanged(const QualifiedName&); |
| |
| PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> propertyFromAttribute(const QualifiedName& attributeName); |
| static AnimatedPropertyType animatedPropertyTypeForCSSAttribute(const QualifiedName& attributeName); |
| |
| void sendSVGLoadEventToSelfAndAncestorChainIfPossible(); |
| bool sendSVGLoadEventIfPossible(); |
| |
| virtual AffineTransform* animateMotionTransform() { return nullptr; } |
| |
| void invalidateSVGAttributes() { ensureUniqueElementData().m_animatedSVGAttributesAreDirty = true; } |
| void invalidateSVGPresentationAttributeStyle() { ensureUniqueElementData().m_presentationAttributeStyleIsDirty = true; } |
| void addSVGLengthPropertyToPresentationAttributeStyle(MutableStylePropertySet*, CSSPropertyID, SVGLength&); |
| |
| const WillBeHeapHashSet<RawPtrWillBeWeakMember<SVGElement>>& instancesForElement() const; |
| void mapInstanceToElement(SVGElement*); |
| void removeInstanceMapping(SVGElement*); |
| |
| void setCursorElement(SVGCursorElement*); |
| void setCursorImageValue(CSSCursorImageValue*); |
| |
| #if !ENABLE(OILPAN) |
| void cursorElementRemoved(); |
| void cursorImageValueRemoved(); |
| #endif |
| |
| SVGElement* correspondingElement(); |
| void setCorrespondingElement(SVGElement*); |
| SVGUseElement* correspondingUseElement() const; |
| |
| void synchronizeAnimatedSVGAttribute(const QualifiedName&) const; |
| |
| PassRefPtr<ComputedStyle> customStyleForLayoutObject() final; |
| |
| #if ENABLE(ASSERT) |
| virtual bool isAnimatableAttribute(const QualifiedName&) const; |
| #endif |
| |
| MutableStylePropertySet* animatedSMILStyleProperties() const; |
| MutableStylePropertySet* ensureAnimatedSMILStyleProperties(); |
| void setUseOverrideComputedStyle(bool); |
| |
| virtual bool haveLoadedRequiredResources(); |
| |
| bool addEventListener(const AtomicString& eventType, PassRefPtrWillBeRawPtr<EventListener>, bool useCapture = false) final; |
| bool removeEventListener(const AtomicString& eventType, PassRefPtrWillBeRawPtr<EventListener>, bool useCapture = false) final; |
| |
| void invalidateRelativeLengthClients(SubtreeLayoutScope* = 0); |
| |
| void addToPropertyMap(PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase>); |
| |
| SVGAnimatedString* className() { return m_className.get(); } |
| |
| bool inUseShadowTree() const; |
| |
| SVGElementSet* setOfIncomingReferences() const; |
| void addReferenceTo(SVGElement*); |
| void rebuildAllIncomingReferences(); |
| void removeAllIncomingReferences(); |
| void removeAllOutgoingReferences(); |
| |
| class InvalidationGuard { |
| STACK_ALLOCATED(); |
| WTF_MAKE_NONCOPYABLE(InvalidationGuard); |
| public: |
| InvalidationGuard(SVGElement* element) : m_element(element) { } |
| ~InvalidationGuard() { m_element->invalidateInstances(); } |
| |
| private: |
| RawPtrWillBeMember<SVGElement> m_element; |
| }; |
| |
| class InstanceUpdateBlocker { |
| STACK_ALLOCATED(); |
| WTF_MAKE_NONCOPYABLE(InstanceUpdateBlocker); |
| public: |
| InstanceUpdateBlocker(SVGElement* targetElement); |
| ~InstanceUpdateBlocker(); |
| |
| private: |
| RawPtrWillBeMember<SVGElement> m_targetElement; |
| }; |
| |
| void invalidateInstances(); |
| |
| DECLARE_VIRTUAL_TRACE(); |
| |
| static const AtomicString& eventParameterName(); |
| |
| bool isPresentationAttribute(const QualifiedName&) const override; |
| virtual bool isPresentationAttributeWithSVGDOM(const QualifiedName&) const { return false; } |
| |
| protected: |
| SVGElement(const QualifiedName&, Document&, ConstructionType = CreateSVGElement); |
| |
| void parseAttribute(const QualifiedName&, const AtomicString&) override; |
| |
| void attributeChanged(const QualifiedName&, const AtomicString&, AttributeModificationReason = ModifiedDirectly) override; |
| |
| void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override; |
| |
| InsertionNotificationRequest insertedInto(ContainerNode*) override; |
| void removedFrom(ContainerNode*) override; |
| void childrenChanged(const ChildrenChange&) override; |
| |
| static CSSPropertyID cssPropertyIdForSVGAttributeName(const QualifiedName&); |
| void updateRelativeLengthsInformation() { updateRelativeLengthsInformation(selfHasRelativeLengths(), this); } |
| void updateRelativeLengthsInformation(bool hasRelativeLengths, SVGElement*); |
| static void markForLayoutAndParentResourceInvalidation(LayoutObject*); |
| |
| virtual bool selfHasRelativeLengths() const { return false; } |
| |
| SVGElementRareData* ensureSVGRareData(); |
| inline bool hasSVGRareData() const { return m_SVGRareData; } |
| inline SVGElementRareData* svgRareData() const |
| { |
| ASSERT(m_SVGRareData); |
| return m_SVGRareData.get(); |
| } |
| |
| // SVGFitToViewBox::parseAttribute uses reportAttributeParsingError. |
| friend class SVGFitToViewBox; |
| void reportAttributeParsingError(SVGParsingError, const QualifiedName&, const AtomicString&); |
| bool hasFocusEventListeners() const; |
| |
| private: |
| bool isSVGElement() const = delete; // This will catch anyone doing an unnecessary check. |
| bool isStyledElement() const = delete; // This will catch anyone doing an unnecessary check. |
| |
| const ComputedStyle* ensureComputedStyle(PseudoId = NOPSEUDO); |
| const ComputedStyle* virtualEnsureComputedStyle(PseudoId pseudoElementSpecifier = NOPSEUDO) final { return ensureComputedStyle(pseudoElementSpecifier); } |
| void willRecalcStyle(StyleRecalcChange) override; |
| |
| void buildPendingResourcesIfNeeded(); |
| |
| WillBeHeapHashSet<RawPtrWillBeWeakMember<SVGElement>> m_elementsWithRelativeLengths; |
| |
| typedef WillBeHeapHashMap<QualifiedName, RefPtrWillBeMember<SVGAnimatedPropertyBase>> AttributeToPropertyMap; |
| AttributeToPropertyMap m_attributeToPropertyMap; |
| |
| #if ENABLE(ASSERT) |
| bool m_inRelativeLengthClientsInvalidation; |
| #endif |
| |
| OwnPtrWillBeMember<SVGElementRareData> m_SVGRareData; |
| RefPtrWillBeMember<SVGAnimatedString> m_className; |
| }; |
| |
| struct SVGAttributeHashTranslator { |
| STATIC_ONLY(SVGAttributeHashTranslator); |
| static unsigned hash(const QualifiedName& key) |
| { |
| if (key.hasPrefix()) { |
| QualifiedNameComponents components = { nullAtom.impl(), key.localName().impl(), key.namespaceURI().impl() }; |
| return hashComponents(components); |
| } |
| return DefaultHash<QualifiedName>::Hash::hash(key); |
| } |
| static bool equal(const QualifiedName& a, const QualifiedName& b) { return a.matches(b); } |
| }; |
| |
| DEFINE_ELEMENT_TYPE_CASTS(SVGElement, isSVGElement()); |
| |
| template <typename T> bool isElementOfType(const SVGElement&); |
| template <> inline bool isElementOfType<const SVGElement>(const SVGElement&) { return true; } |
| |
| inline bool Node::hasTagName(const SVGQualifiedName& name) const |
| { |
| return isSVGElement() && toSVGElement(*this).hasTagName(name); |
| } |
| |
| // This requires isSVG*Element(const SVGElement&). |
| #define DEFINE_SVGELEMENT_TYPE_CASTS_WITH_FUNCTION(thisType) \ |
| inline bool is##thisType(const thisType* element); \ |
| inline bool is##thisType(const thisType& element); \ |
| inline bool is##thisType(const SVGElement* element) { return element && is##thisType(*element); } \ |
| inline bool is##thisType(const Node& node) { return node.isSVGElement() ? is##thisType(toSVGElement(node)) : false; } \ |
| inline bool is##thisType(const Node* node) { return node && is##thisType(*node); } \ |
| template<typename T> inline bool is##thisType(const PassRefPtrWillBeRawPtr<T>& node) { return is##thisType(node.get()); } \ |
| template<typename T> inline bool is##thisType(const RefPtrWillBeMember<T>& node) { return is##thisType(node.get()); } \ |
| template <> inline bool isElementOfType<const thisType>(const SVGElement& element) { return is##thisType(element); } \ |
| DEFINE_ELEMENT_TYPE_CASTS_WITH_FUNCTION(thisType) |
| |
| } // namespace blink |
| |
| #include "core/SVGElementTypeHelpers.h" |
| |
| #endif // SVGElement_h |