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      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 #if ENABLE(SVG)
     25 #include "SVGResourcesCache.h"
     26 #include <wtf/Forward.h>
     27 #include <wtf/HashMap.h>
     28 #include <wtf/HashSet.h>
     29 #include <wtf/PassOwnPtr.h>
     30 #include <wtf/text/AtomicStringHash.h>
     31 #include <wtf/text/StringImpl.h>
     32 
     33 namespace WebCore {
     34 
     35 class Document;
     36 class RenderSVGResourceContainer;
     37 class SVGElement;
     38 class SVGStyledElement;
     39 class SVGSMILElement;
     40 class SVGSVGElement;
     41 
     42 class SVGDocumentExtensions {
     43     WTF_MAKE_NONCOPYABLE(SVGDocumentExtensions); WTF_MAKE_FAST_ALLOCATED;
     44 public:
     45     typedef HashSet<RefPtr<SVGStyledElement> > 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     bool sampleAnimationAtTime(const String& elementId, SVGSMILElement*, double time);
     60 
     61     void addAnimationElementToTarget(SVGSMILElement*, SVGElement*);
     62     void removeAnimationElementFromTarget(SVGSMILElement*, SVGElement*);
     63     void removeAllAnimationElementsFromTarget(SVGElement*);
     64 
     65     void reportWarning(const String&);
     66     void reportError(const String&);
     67 
     68     SVGResourcesCache* resourcesCache() const { return m_resourcesCache.get(); }
     69 
     70 private:
     71     Document* m_document; // weak reference
     72     HashSet<SVGSVGElement*> m_timeContainers; // For SVG 1.2 support this will need to be made more general.
     73     HashMap<SVGElement*, HashSet<SVGSMILElement*>* > m_animatedElements;
     74     HashMap<AtomicString, RenderSVGResourceContainer*> m_resources;
     75     HashMap<AtomicString, SVGPendingElements*> m_pendingResources;
     76     OwnPtr<SVGResourcesCache> m_resourcesCache;
     77 
     78 public:
     79     // This HashMap contains a list of pending resources. Pending resources, are such
     80     // which are referenced by any object in the SVG document, but do NOT exist yet.
     81     // For instance, dynamically build gradients / patterns / clippers...
     82     void addPendingResource(const AtomicString& id, PassRefPtr<SVGStyledElement>);
     83     bool isPendingResource(const AtomicString& id) const;
     84     PassOwnPtr<SVGPendingElements> removePendingResource(const AtomicString& id);
     85 };
     86 
     87 }
     88 
     89 #endif
     90 #endif
     91