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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 SVGPathSegListPropertyTearOff_h
     21 #define SVGPathSegListPropertyTearOff_h
     22 
     23 #include "bindings/v8/ExceptionState.h"
     24 #include "core/svg/SVGPathSegList.h"
     25 #include "core/svg/properties/SVGAnimatedListPropertyTearOff.h"
     26 
     27 namespace WebCore {
     28 
     29 class SVGPathElement;
     30 
     31 class SVGPathSegListPropertyTearOff : public SVGListProperty<SVGPathSegList> {
     32 public:
     33     typedef SVGListProperty<SVGPathSegList> Base;
     34     typedef SVGAnimatedListPropertyTearOff<SVGPathSegList> AnimatedListPropertyTearOff;
     35     typedef SVGPropertyTraits<SVGPathSegList>::ListItemType ListItemType;
     36     typedef PassRefPtr<SVGPathSeg> PassListItemType;
     37 
     38     static PassRefPtr<SVGPathSegListPropertyTearOff> create(AnimatedListPropertyTearOff* animatedProperty, SVGPropertyRole role, SVGPathSegRole pathSegRole, SVGPathSegList& values, ListWrapperCache& wrappers)
     39     {
     40         ASSERT(animatedProperty);
     41         return adoptRef(new SVGPathSegListPropertyTearOff(animatedProperty, role, pathSegRole, values, wrappers));
     42     }
     43 
     44     int findItem(const ListItemType& item) const
     45     {
     46         ASSERT(m_values);
     47 
     48         unsigned size = m_values->size();
     49         for (size_t i = 0; i < size; ++i) {
     50             if (item == m_values->at(i))
     51                 return i;
     52         }
     53 
     54         return -1;
     55     }
     56 
     57     void removeItemFromList(size_t itemIndex, bool shouldSynchronizeWrappers)
     58     {
     59         ASSERT(m_values);
     60         ASSERT_WITH_SECURITY_IMPLICATION(itemIndex < m_values->size());
     61 
     62         m_values->remove(itemIndex);
     63 
     64         if (shouldSynchronizeWrappers)
     65             commitChange();
     66     }
     67 
     68     // SVGList API
     69     void clear(ExceptionState&);
     70 
     71     PassListItemType initialize(PassListItemType passNewItem, ExceptionState& es)
     72     {
     73         // Not specified, but FF/Opera do it this way, and it's just sane.
     74         if (!passNewItem) {
     75             es.throwTypeError();
     76             return 0;
     77         }
     78 
     79         clearContextAndRoles();
     80         ListItemType newItem = passNewItem;
     81         return Base::initializeValues(newItem, es);
     82     }
     83 
     84     PassListItemType getItem(unsigned index, ExceptionState&);
     85 
     86     PassListItemType insertItemBefore(PassListItemType passNewItem, unsigned index, ExceptionState& es)
     87     {
     88         // Not specified, but FF/Opera do it this way, and it's just sane.
     89         if (!passNewItem) {
     90             es.throwTypeError();
     91             return 0;
     92         }
     93 
     94         ListItemType newItem = passNewItem;
     95         return Base::insertItemBeforeValues(newItem, index, es);
     96     }
     97 
     98     PassListItemType replaceItem(PassListItemType, unsigned index, ExceptionState&);
     99 
    100     PassListItemType removeItem(unsigned index, ExceptionState&);
    101 
    102     PassListItemType appendItem(PassListItemType passNewItem, ExceptionState& es)
    103     {
    104         // Not specified, but FF/Opera do it this way, and it's just sane.
    105         if (!passNewItem) {
    106             es.throwTypeError();
    107             return 0;
    108         }
    109 
    110         ListItemType newItem = passNewItem;
    111         return Base::appendItemValues(newItem, es);
    112     }
    113 
    114 private:
    115     SVGPathSegListPropertyTearOff(AnimatedListPropertyTearOff* animatedProperty, SVGPropertyRole role, SVGPathSegRole pathSegRole, SVGPathSegList& values, ListWrapperCache& wrappers)
    116         : SVGListProperty<SVGPathSegList>(role, values, &wrappers)
    117         , m_animatedProperty(animatedProperty)
    118         , m_pathSegRole(pathSegRole)
    119     {
    120     }
    121 
    122     SVGPathElement* contextElement() const;
    123 
    124     void clearContextAndRoles();
    125 
    126     using Base::m_role;
    127 
    128     virtual bool isReadOnly() const
    129     {
    130         if (m_role == AnimValRole)
    131             return true;
    132         if (m_animatedProperty && m_animatedProperty->isReadOnly())
    133             return true;
    134         return false;
    135     }
    136 
    137     virtual void commitChange()
    138     {
    139         ASSERT(m_values);
    140         m_values->commitChange(m_animatedProperty->contextElement(), ListModificationUnknown);
    141     }
    142 
    143     virtual void commitChange(ListModification listModification)
    144     {
    145         ASSERT(m_values);
    146         m_values->commitChange(m_animatedProperty->contextElement(), listModification);
    147     }
    148 
    149     virtual bool processIncomingListItemValue(const ListItemType& newItem, unsigned* indexToModify) OVERRIDE;
    150     virtual bool processIncomingListItemWrapper(RefPtr<ListItemTearOff>&, unsigned*)
    151     {
    152         ASSERT_NOT_REACHED();
    153         return true;
    154     }
    155 
    156 private:
    157     RefPtr<AnimatedListPropertyTearOff> m_animatedProperty;
    158     SVGPathSegRole m_pathSegRole;
    159 };
    160 
    161 }
    162 
    163 #endif // SVGListPropertyTearOff_h
    164