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      1 /*
      2  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  */
     19 
     20 #ifndef SVGTransformListPropertyTearOff_h
     21 #define SVGTransformListPropertyTearOff_h
     22 
     23 #if ENABLE(SVG)
     24 #include "SVGListPropertyTearOff.h"
     25 #include "SVGTransformList.h"
     26 
     27 namespace WebCore {
     28 
     29 // SVGTransformList contains two additional methods, that can be exposed to the bindings.
     30 class SVGTransformListPropertyTearOff : public SVGListPropertyTearOff<SVGTransformList> {
     31 public:
     32     typedef SVGAnimatedListPropertyTearOff<SVGTransformList> AnimatedListPropertyTearOff;
     33     typedef SVGAnimatedListPropertyTearOff<SVGTransformList>::ListWrapperCache ListWrapperCache;
     34 
     35     static PassRefPtr<SVGListPropertyTearOff<SVGTransformList> > create(AnimatedListPropertyTearOff* animatedProperty, SVGPropertyRole role)
     36     {
     37         ASSERT(animatedProperty);
     38         return adoptRef(new SVGTransformListPropertyTearOff(animatedProperty, role));
     39     }
     40 
     41     PassRefPtr<SVGPropertyTearOff<SVGTransform> > createSVGTransformFromMatrix(SVGPropertyTearOff<SVGMatrix>* matrix, ExceptionCode& ec)
     42     {
     43         if (!matrix) {
     44             ec = TYPE_MISMATCH_ERR;
     45             return 0;
     46         }
     47         SVGTransformList& values = m_animatedProperty->values();
     48         return SVGPropertyTearOff<SVGTransform>::create(values.createSVGTransformFromMatrix(matrix->propertyReference()));
     49     }
     50 
     51     PassRefPtr<SVGPropertyTearOff<SVGTransform> > consolidate(ExceptionCode& ec)
     52     {
     53         if (!canAlterList(ec))
     54             return 0;
     55 
     56         SVGTransformList& values = m_animatedProperty->values();
     57         ListWrapperCache& wrappers = m_animatedProperty->wrappers();
     58         ASSERT(values.size() == wrappers.size());
     59 
     60         // Spec: If the list was empty, then a value of null is returned.
     61         if (values.isEmpty())
     62             return 0;
     63 
     64         m_animatedProperty->detachListWrappers(0);
     65         RefPtr<SVGPropertyTearOff<SVGTransform> > wrapper = SVGPropertyTearOff<SVGTransform>::create(values.consolidate());
     66         wrappers.append(wrapper);
     67 
     68         ASSERT(values.size() == wrappers.size());
     69         return wrapper.release();
     70     }
     71 
     72 private:
     73     SVGTransformListPropertyTearOff(AnimatedListPropertyTearOff* animatedProperty, SVGPropertyRole role)
     74         : SVGListPropertyTearOff<SVGTransformList>(animatedProperty, role)
     75     {
     76     }
     77 
     78 };
     79 
     80 }
     81 
     82 #endif // ENABLE(SVG)
     83 #endif // SVGListPropertyTearOff_h
     84