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      1 /*
      2     Copyright (C) 2006 Apple Computer, Inc.
      3                   2006, 2008 Nikolas Zimmermann <zimmermann (at) kde.org>
      4 
      5     This file is part of the WebKit project
      6 
      7     This library is free software; you can redistribute it and/or
      8     modify it under the terms of the GNU Library General Public
      9     License as published by the Free Software Foundation; either
     10     version 2 of the License, or (at your option) any later version.
     11 
     12     This library is distributed in the hope that it will be useful,
     13     but WITHOUT ANY WARRANTY; without even the implied warranty of
     14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     15     Library General Public License for more details.
     16 
     17     You should have received a copy of the GNU Library General Public License
     18     along with this library; see the file COPYING.LIB.  If not, write to
     19     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     20     Boston, MA 02110-1301, USA.
     21 */
     22 
     23 #ifndef SVGDocumentExtensions_h
     24 #define SVGDocumentExtensions_h
     25 
     26 #if ENABLE(SVG)
     27 #include <memory>
     28 
     29 #include <wtf/HashSet.h>
     30 #include <wtf/HashMap.h>
     31 
     32 #include "StringHash.h"
     33 #include "StringImpl.h"
     34 
     35 namespace WebCore {
     36 
     37 class Document;
     38 class String;
     39 class SVGStyledElement;
     40 class SVGSMILElement;
     41 class SVGSVGElement;
     42 
     43 class SVGDocumentExtensions : public Noncopyable {
     44 public:
     45     SVGDocumentExtensions(Document*);
     46     ~SVGDocumentExtensions();
     47 
     48     void addTimeContainer(SVGSVGElement*);
     49     void removeTimeContainer(SVGSVGElement*);
     50 
     51     void startAnimations();
     52     void pauseAnimations();
     53     void unpauseAnimations();
     54     bool sampleAnimationAtTime(const String& elementId, SVGSMILElement*, double time);
     55 
     56     void reportWarning(const String&);
     57     void reportError(const String&);
     58 
     59 private:
     60     Document* m_doc; // weak reference
     61     HashSet<SVGSVGElement*> m_timeContainers; // For SVG 1.2 support this will need to be made more general.
     62     HashMap<String, HashSet<SVGStyledElement*>*> m_pendingResources;
     63 
     64     SVGDocumentExtensions(const SVGDocumentExtensions&);
     65     SVGDocumentExtensions& operator=(const SVGDocumentExtensions&);
     66 
     67 public:
     68     // This HashMap contains a list of pending resources. Pending resources, are such
     69     // which are referenced by any object in the SVG document, but do NOT exist yet.
     70     // For instance, dynamically build gradients / patterns / clippers...
     71     void addPendingResource(const AtomicString& id, SVGStyledElement*);
     72     bool isPendingResource(const AtomicString& id) const;
     73     std::auto_ptr<HashSet<SVGStyledElement*> > removePendingResource(const AtomicString& id);
     74 };
     75 
     76 }
     77 
     78 #endif
     79 #endif
     80