1 /* 2 * Copyright (C) 2006 Apple Inc. All rights reserved. 3 * Copyright (C) 2006, 2008 Nikolas Zimmermann <zimmermann (at) kde.org> 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21 #ifndef SVGDocumentExtensions_h 22 #define SVGDocumentExtensions_h 23 24 #include "wtf/Forward.h" 25 #include "wtf/HashMap.h" 26 #include "wtf/HashSet.h" 27 #include "wtf/text/AtomicStringHash.h" 28 29 namespace WebCore { 30 31 class Document; 32 class RenderSVGResourceContainer; 33 class SVGElement; 34 #if ENABLE(SVG_FONTS) 35 class SVGFontFaceElement; 36 #endif 37 class SVGResourcesCache; 38 class SVGSMILElement; 39 class SVGSVGElement; 40 class Element; 41 42 class SVGDocumentExtensions { 43 WTF_MAKE_NONCOPYABLE(SVGDocumentExtensions); WTF_MAKE_FAST_ALLOCATED; 44 public: 45 typedef HashSet<Element*> SVGPendingElements; 46 SVGDocumentExtensions(Document*); 47 ~SVGDocumentExtensions(); 48 49 void addTimeContainer(SVGSVGElement*); 50 void removeTimeContainer(SVGSVGElement*); 51 52 void addResource(const AtomicString& id, RenderSVGResourceContainer*); 53 void removeResource(const AtomicString& id); 54 RenderSVGResourceContainer* resourceById(const AtomicString& id) const; 55 56 void startAnimations(); 57 void pauseAnimations(); 58 void unpauseAnimations(); 59 void dispatchSVGLoadEventToOutermostSVGElements(); 60 61 void reportWarning(const String&); 62 void reportError(const String&); 63 64 SVGResourcesCache* resourcesCache() const { return m_resourcesCache.get(); } 65 66 HashSet<SVGElement*>* setOfElementsReferencingTarget(SVGElement* referencedElement) const; 67 void addElementReferencingTarget(SVGElement* referencingElement, SVGElement* referencedElement); 68 void removeAllTargetReferencesForElement(SVGElement*); 69 void rebuildAllElementReferencesForTarget(SVGElement*); 70 void removeAllElementReferencesForTarget(SVGElement*); 71 72 #if ENABLE(SVG_FONTS) 73 const HashSet<SVGFontFaceElement*>& svgFontFaceElements() const { return m_svgFontFaceElements; } 74 void registerSVGFontFaceElement(SVGFontFaceElement*); 75 void unregisterSVGFontFaceElement(SVGFontFaceElement*); 76 #endif 77 78 private: 79 Document* m_document; // weak reference 80 HashSet<SVGSVGElement*> m_timeContainers; // For SVG 1.2 support this will need to be made more general. 81 #if ENABLE(SVG_FONTS) 82 HashSet<SVGFontFaceElement*> m_svgFontFaceElements; 83 #endif 84 HashMap<AtomicString, RenderSVGResourceContainer*> m_resources; 85 HashMap<AtomicString, OwnPtr<SVGPendingElements> > m_pendingResources; // Resources that are pending. 86 HashMap<AtomicString, OwnPtr<SVGPendingElements> > m_pendingResourcesForRemoval; // Resources that are pending and scheduled for removal. 87 HashMap<SVGElement*, OwnPtr<HashSet<SVGElement*> > > m_elementDependencies; 88 OwnPtr<SVGResourcesCache> m_resourcesCache; 89 90 public: 91 // This HashMap contains a list of pending resources. Pending resources, are such 92 // which are referenced by any object in the SVG document, but do NOT exist yet. 93 // For instance, dynamically build gradients / patterns / clippers... 94 void addPendingResource(const AtomicString& id, Element*); 95 bool hasPendingResource(const AtomicString& id) const; 96 bool isElementPendingResources(Element*) const; 97 bool isElementPendingResource(Element*, const AtomicString& id) const; 98 void clearHasPendingResourcesIfPossible(Element*); 99 void removeElementFromPendingResources(Element*); 100 PassOwnPtr<SVGPendingElements> removePendingResource(const AtomicString& id); 101 102 // The following two functions are used for scheduling a pending resource to be removed. 103 void markPendingResourcesForRemoval(const AtomicString&); 104 Element* removeElementFromPendingResourcesForRemoval(const AtomicString&); 105 106 private: 107 PassOwnPtr<SVGPendingElements> removePendingResourceForRemoval(const AtomicString&); 108 }; 109 110 } 111 112 #endif 113