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/*
* Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
* Copyright (C) 2009-2019 Apple Inc. All rights reserved.
* Copyright (C) 2013 Samsung Electronics. 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.
*/
#pragma once
#include "SVGAnimatedPropertyImpl.h"
#include "SVGLocatable.h"
#include "SVGNames.h"
#include "SVGParsingError.h"
#include "SVGPropertyOwnerRegistry.h"
#include "StyledElement.h"
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class AffineTransform;
class CSSStyleDeclaration;
class DeprecatedCSSOMValue;
class Document;
class SVGDocumentExtensions;
class SVGElementRareData;
class SVGPropertyAnimatorFactory;
class SVGSVGElement;
class SVGUseElement;
void mapAttributeToCSSProperty(HashMap<AtomStringImpl*, CSSPropertyID>* propertyNameToIdMap, const QualifiedName& attrName);
class SVGElement : public StyledElement, public SVGPropertyOwner {
WTF_MAKE_ISO_ALLOCATED(SVGElement);
public:
bool isOutermostSVGSVGElement() const;
SVGSVGElement* ownerSVGElement() const;
SVGElement* viewportElement() const;
String title() const override;
virtual bool supportsMarkers() const { return false; }
bool hasRelativeLengths() const { return !m_elementsWithRelativeLengths.isEmpty(); }
virtual bool needsPendingResourceHandling() const { return true; }
bool instanceUpdatesBlocked() const;
void setInstanceUpdatesBlocked(bool);
virtual AffineTransform localCoordinateSpaceTransform(SVGLocatable::CTMScope) const;
virtual bool isSVGGraphicsElement() const { return false; }
virtual bool isSVGGeometryElement() const { return false; }
virtual bool isFilterEffect() const { return false; }
virtual bool isGradientStop() const { return false; }
virtual bool isTextContent() const { return false; }
virtual bool isSMILElement() const { return false; }
// For SVGTests
virtual bool isValid() const { return true; }
virtual void svgAttributeChanged(const QualifiedName&);
void sendLoadEventIfPossible();
void loadEventTimerFired();
virtual Timer* loadEventTimer();
virtual AffineTransform* supplementalTransform() { return nullptr; }
void invalidateSVGAttributes() { ensureUniqueElementData().setAnimatedSVGAttributesAreDirty(true); }
void invalidateSVGPresentationAttributeStyle()
{
ensureUniqueElementData().setPresentationAttributeStyleIsDirty(true);
// Trigger style recalculation for "elements as resource" (e.g. referenced by feImage).
invalidateStyle();
}
// The instances of an element are clones made in shadow trees to implement <use>.
const HashSet<SVGElement*>& instances() const;
bool getBoundingBox(FloatRect&, SVGLocatable::StyleUpdateStrategy = SVGLocatable::AllowStyleUpdate);
SVGElement* correspondingElement() const;
RefPtr<SVGUseElement> correspondingUseElement() const;
void setCorrespondingElement(SVGElement*);
Optional<Style::ElementStyle> resolveCustomStyle(const RenderStyle& parentStyle, const RenderStyle* shadowHostStyle) override;
static QualifiedName animatableAttributeForName(const AtomString&);
#ifndef NDEBUG
bool isAnimatableAttribute(const QualifiedName&) const;
#endif
MutableStyleProperties* animatedSMILStyleProperties() const;
MutableStyleProperties& ensureAnimatedSMILStyleProperties();
void setUseOverrideComputedStyle(bool);
virtual bool haveLoadedRequiredResources();
bool addEventListener(const AtomString& eventType, Ref<EventListener>&&, const AddEventListenerOptions&) override;
bool removeEventListener(const AtomString& eventType, EventListener&, const ListenerOptions&) override;
bool hasTagName(const SVGQualifiedName& name) const { return hasLocalName(name.localName()); }
void callClearTarget() { clearTarget(); }
class InstanceUpdateBlocker;
class InstanceInvalidationGuard;
using PropertyRegistry = SVGPropertyOwnerRegistry<SVGElement>;
virtual const SVGPropertyRegistry& propertyRegistry() const { return m_propertyRegistry; }
void detachAllProperties() { propertyRegistry().detachAllProperties(); }
bool isAnimatedPropertyAttribute(const QualifiedName&) const;
bool isAnimatedAttribute(const QualifiedName&) const;
bool isAnimatedStyleAttribute(const QualifiedName&) const;
void synchronizeAttribute(const QualifiedName&);
void synchronizeAllAttributes();
static void synchronizeAllAnimatedSVGAttribute(SVGElement&);
void commitPropertyChange(SVGProperty*) override;
void commitPropertyChange(SVGAnimatedProperty&);
const SVGElement* attributeContextElement() const override { return this; }
SVGPropertyAnimatorFactory& propertyAnimatorFactory() { return *m_propertyAnimatorFactory; }
RefPtr<SVGAttributeAnimator> createAnimator(const QualifiedName&, AnimationMode, CalcMode, bool isAccumulated, bool isAdditive);
void animatorWillBeDeleted(const QualifiedName&);
const RenderStyle* computedStyle(PseudoId = PseudoId::None) final;
// These are needed for the RenderTree, animation and DOM.
String className() const { return m_className->currentValue(); }
SVGAnimatedString& classNameAnimated() { return m_className; }
protected:
SVGElement(const QualifiedName&, Document&);
virtual ~SVGElement();
bool rendererIsNeeded(const RenderStyle&) override;
void parseAttribute(const QualifiedName&, const AtomString&) override;
void finishParsingChildren() override;
void attributeChanged(const QualifiedName&, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason = ModifiedDirectly) override;
bool childShouldCreateRenderer(const Node&) const override;
SVGElementRareData& ensureSVGRareData();
void reportAttributeParsingError(SVGParsingError, const QualifiedName&, const AtomString&);
static CSSPropertyID cssPropertyIdForSVGAttributeName(const QualifiedName&);
bool isPresentationAttribute(const QualifiedName&) const override;
void collectStyleForPresentationAttribute(const QualifiedName&, const AtomString&, MutableStyleProperties&) override;
InsertedIntoAncestorResult insertedIntoAncestor(InsertionType, ContainerNode&) override;
void didFinishInsertingNode() override;
void removedFromAncestor(RemovalType, ContainerNode&) override;
void childrenChanged(const ChildChange&) override;
virtual bool selfHasRelativeLengths() const { return false; }
void updateRelativeLengthsInformation() { updateRelativeLengthsInformation(selfHasRelativeLengths(), this); }
void updateRelativeLengthsInformation(bool hasRelativeLengths, SVGElement*);
void willRecalcStyle(Style::Change) override;
private:
virtual void clearTarget() { }
void buildPendingResourcesIfNeeded();
bool accessKeyAction(bool sendMouseEvents) override;
#ifndef NDEBUG
virtual bool filterOutAnimatableAttribute(const QualifiedName&) const;
#endif
void invalidateInstances();
std::unique_ptr<SVGElementRareData> m_svgRareData;
HashSet<SVGElement*> m_elementsWithRelativeLengths;
std::unique_ptr<SVGPropertyAnimatorFactory> m_propertyAnimatorFactory;
PropertyRegistry m_propertyRegistry { *this };
Ref<SVGAnimatedString> m_className { SVGAnimatedString::create(this) };
};
class SVGElement::InstanceInvalidationGuard {
public:
InstanceInvalidationGuard(SVGElement&);
~InstanceInvalidationGuard();
private:
SVGElement& m_element;
};
class SVGElement::InstanceUpdateBlocker {
public:
InstanceUpdateBlocker(SVGElement&);
~InstanceUpdateBlocker();
private:
SVGElement& m_element;
};
struct 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(key);
}
static bool equal(const QualifiedName& a, const QualifiedName& b) { return a.matches(b); }
};
inline SVGElement::InstanceInvalidationGuard::InstanceInvalidationGuard(SVGElement& element)
: m_element(element)
{
}
inline SVGElement::InstanceInvalidationGuard::~InstanceInvalidationGuard()
{
m_element.invalidateInstances();
}
inline SVGElement::InstanceUpdateBlocker::InstanceUpdateBlocker(SVGElement& element)
: m_element(element)
{
m_element.setInstanceUpdatesBlocked(true);
}
inline SVGElement::InstanceUpdateBlocker::~InstanceUpdateBlocker()
{
m_element.setInstanceUpdatesBlocked(false);
}
inline bool Node::hasTagName(const SVGQualifiedName& name) const
{
return isSVGElement() && downcast<SVGElement>(*this).hasTagName(name);
}
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::SVGElement)
static bool isType(const WebCore::Node& node) { return node.isSVGElement(); }
SPECIALIZE_TYPE_TRAITS_END()
#include "SVGElementTypeHelpers.h"