Home | History | Annotate | Download | only in properties 
      1 /*
      2  * Copyright (C) Research In Motion Limited 2010, 2012. 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 SVGAnimatedPathSegListPropertyTearOff_h
     21 #define SVGAnimatedPathSegListPropertyTearOff_h
     22 
     23 #include "core/svg/SVGPathByteStream.h"
     24 #include "core/svg/SVGPathElement.h"
     25 #include "core/svg/SVGPathSegList.h"
     26 #include "core/svg/SVGPathUtilities.h"
     27 #include "core/svg/properties/SVGAnimatedListPropertyTearOff.h"
     28 #include "core/svg/properties/SVGPathSegListPropertyTearOff.h"
     29 
     30 namespace WebCore {
     31 
     32 class SVGAnimatedPathSegListPropertyTearOff : public SVGAnimatedListPropertyTearOff<SVGPathSegList> {
     33 public:
     34     virtual SVGListProperty<SVGPathSegList>* baseVal()
     35     {
     36         if (!m_baseVal)
     37             m_baseVal = SVGPathSegListPropertyTearOff::create(this, BaseValRole, PathSegUnalteredRole, m_values, m_wrappers);
     38         return static_cast<SVGListProperty<SVGPathSegList>*>(m_baseVal.get());
     39     }
     40 
     41     virtual SVGListProperty<SVGPathSegList>* animVal()
     42     {
     43         if (!m_animVal)
     44             m_animVal = SVGPathSegListPropertyTearOff::create(this, AnimValRole, PathSegUnalteredRole, m_values, m_wrappers);
     45         return static_cast<SVGListProperty<SVGPathSegList>*>(m_animVal.get());
     46     }
     47 
     48     int findItem(const RefPtr<SVGPathSeg>& segment) const
     49     {
     50         // This should ever be called for our baseVal, as animVal can't modify the list.
     51         ASSERT(m_baseVal);
     52         return static_cast<SVGPathSegListPropertyTearOff*>(m_baseVal.get())->findItem(segment);
     53     }
     54 
     55     void removeItemFromList(size_t itemIndex, bool shouldSynchronizeWrappers)
     56     {
     57         // This should ever be called for our baseVal, as animVal can't modify the list.
     58         ASSERT(m_baseVal);
     59         static_cast<SVGPathSegListPropertyTearOff*>(m_baseVal.get())->removeItemFromList(itemIndex, shouldSynchronizeWrappers);
     60     }
     61 
     62     static PassRefPtr<SVGAnimatedPathSegListPropertyTearOff> create(SVGElement* contextElement, const QualifiedName& attributeName, AnimatedPropertyType animatedPropertyType, SVGPathSegList& values)
     63     {
     64         ASSERT(contextElement);
     65         return adoptRef(new SVGAnimatedPathSegListPropertyTearOff(contextElement, attributeName, animatedPropertyType, values));
     66     }
     67 
     68     using SVGAnimatedListPropertyTearOff<SVGPathSegList>::animationStarted;
     69     void animationStarted(SVGPathByteStream* byteStream, const SVGPathSegList* baseValue)
     70     {
     71         ASSERT(byteStream);
     72         ASSERT(baseValue);
     73         ASSERT(!m_animatedPathByteStream);
     74         m_animatedPathByteStream = byteStream;
     75 
     76         // Pass shouldOwnValues=true, as the SVGPathSegList lifetime is solely managed by its tear off class.
     77         SVGPathSegList* copy = new SVGPathSegList(*baseValue);
     78         SVGAnimatedListPropertyTearOff<SVGPathSegList>::animationStarted(copy, true);
     79     }
     80 
     81     void animationEnded()
     82     {
     83         ASSERT(m_animatedPathByteStream);
     84         m_animatedPathByteStream = 0;
     85         SVGAnimatedListPropertyTearOff<SVGPathSegList>::animationEnded();
     86     }
     87 
     88     void animValDidChange()
     89     {
     90         ASSERT(m_animatedPathByteStream);
     91         SVGPathElement* pathElement = toSVGPathElement(contextElement());
     92 
     93         // If the animVal is observed from JS, we have to update it on each animation step.
     94         // This is an expensive operation and only done, if someone actually observes the animatedPathSegList() while an animation is running.
     95         if (pathElement->isAnimValObserved()) {
     96             SVGPathSegList& animatedList = currentAnimatedValue();
     97             animatedList.clear();
     98             buildSVGPathSegListFromByteStream(m_animatedPathByteStream, pathElement, animatedList, UnalteredParsing);
     99         }
    100 
    101         SVGAnimatedListPropertyTearOff<SVGPathSegList>::animValDidChange();
    102     }
    103 
    104     SVGPathByteStream* animatedPathByteStream() const { return m_animatedPathByteStream; }
    105 
    106 private:
    107     SVGAnimatedPathSegListPropertyTearOff(SVGElement* contextElement, const QualifiedName& attributeName, AnimatedPropertyType animatedPropertyType, SVGPathSegList& values)
    108         : SVGAnimatedListPropertyTearOff<SVGPathSegList>(contextElement, attributeName, animatedPropertyType, values)
    109         , m_animatedPathByteStream(0)
    110     {
    111     }
    112 
    113     SVGPathByteStream* m_animatedPathByteStream;
    114 };
    115 
    116 }
    117 
    118 #endif // SVGAnimatedPathSegListPropertyTearOff_h
    119