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/*
* Copyright (C) 2006 Apple Inc. All rights reserved.
* Copyright (C) 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
*
* 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 SVGDocumentExtensions_h
#define SVGDocumentExtensions_h
#include <wtf/Forward.h>
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/text/AtomicStringHash.h>
namespace WebCore {
class Document;
class RenderSVGResourceContainer;
class SVGElement;
#if ENABLE(SVG_FONTS)
class SVGFontFaceElement;
#endif
class SVGResourcesCache;
class SVGSMILElement;
class SVGSVGElement;
class Element;
class SVGDocumentExtensions {
WTF_MAKE_NONCOPYABLE(SVGDocumentExtensions); WTF_MAKE_FAST_ALLOCATED;
public:
typedef HashSet<Element*> PendingElements;
explicit SVGDocumentExtensions(Document*);
~SVGDocumentExtensions();
void addTimeContainer(SVGSVGElement*);
void removeTimeContainer(SVGSVGElement*);
void addResource(const AtomicString& id, RenderSVGResourceContainer*);
void removeResource(const AtomicString& id);
RenderSVGResourceContainer* resourceById(const AtomicString& id) const;
void startAnimations();
void pauseAnimations();
void unpauseAnimations();
void dispatchSVGLoadEventToOutermostSVGElements();
void reportWarning(const String&);
void reportError(const String&);
SVGResourcesCache& resourcesCache() { return *m_resourcesCache; }
HashSet<SVGElement*>* setOfElementsReferencingTarget(SVGElement* referencedElement) const;
void addElementReferencingTarget(SVGElement* referencingElement, SVGElement* referencedElement);
void removeAllTargetReferencesForElement(SVGElement*);
void rebuildAllElementReferencesForTarget(SVGElement&);
void removeAllElementReferencesForTarget(SVGElement*);
void clearTargetDependencies(SVGElement&);
void rebuildElements();
#if ENABLE(SVG_FONTS)
const HashSet<SVGFontFaceElement*>& svgFontFaceElements() const { return m_svgFontFaceElements; }
void registerSVGFontFaceElement(SVGFontFaceElement*);
void unregisterSVGFontFaceElement(SVGFontFaceElement*);
#endif
private:
Document* m_document; // weak reference
HashSet<SVGSVGElement*> m_timeContainers; // For SVG 1.2 support this will need to be made more general.
#if ENABLE(SVG_FONTS)
HashSet<SVGFontFaceElement*> m_svgFontFaceElements;
#endif
HashMap<AtomicString, RenderSVGResourceContainer*> m_resources;
HashMap<AtomicString, std::unique_ptr<PendingElements>> m_pendingResources; // Resources that are pending.
HashMap<AtomicString, std::unique_ptr<PendingElements>> m_pendingResourcesForRemoval; // Resources that are pending and scheduled for removal.
HashMap<SVGElement*, std::unique_ptr<HashSet<SVGElement*>>> m_elementDependencies;
std::unique_ptr<SVGResourcesCache> m_resourcesCache;
Vector<SVGElement*> m_rebuildElements;
public:
// This HashMap contains a list of pending resources. Pending resources, are such
// which are referenced by any object in the SVG document, but do NOT exist yet.
// For instance, dynamically build gradients / patterns / clippers...
void addPendingResource(const AtomicString& id, Element*);
bool isIdOfPendingResource(const AtomicString& id) const;
bool isPendingResource(Element*, const AtomicString& id) const;
void clearHasPendingResourcesIfPossible(Element*);
void removeElementFromPendingResources(Element*);
std::unique_ptr<PendingElements> removePendingResource(const AtomicString& id);
// The following two functions are used for scheduling a pending resource to be removed.
void markPendingResourcesForRemoval(const AtomicString&);
Element* removeElementFromPendingResourcesForRemovalMap(const AtomicString&);
private:
bool isElementWithPendingResources(Element*) const;
std::unique_ptr<PendingElements> removePendingResourceForRemoval(const AtomicString&);
};
}
#endif
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