| /* |
| Copyright (C) Research In Motion Limited 2009-2010. All rights reserved. |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public License |
| along with this library; see the file COPYING.LIB. If not, write to |
| the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifndef JSSVGContextCache_h |
| #define JSSVGContextCache_h |
| |
| #if ENABLE(SVG) |
| #include "SVGElement.h" |
| #include <wtf/StdLibExtras.h> |
| |
| namespace WebCore { |
| |
| class DOMObject; |
| |
| class JSSVGContextCache : public Noncopyable { |
| public: |
| typedef HashMap<DOMObject*, SVGElement*> WrapperMap; |
| |
| static WrapperMap& wrapperMap() |
| { |
| DEFINE_STATIC_LOCAL(WrapperMap, s_wrapperMap, ()); |
| return s_wrapperMap; |
| } |
| |
| static void addWrapper(DOMObject* wrapper, SVGElement* context) |
| { |
| ASSERT(wrapper); |
| ASSERT(context); |
| |
| pair<WrapperMap::iterator, bool> result = wrapperMap().add(wrapper, context); |
| if (result.second) { |
| WrapperMap::iterator& it = result.first; |
| ASSERT_UNUSED(it, it->second == context); |
| } |
| } |
| |
| static void forgetWrapper(DOMObject* wrapper) |
| { |
| ASSERT(wrapper); |
| |
| WrapperMap& map = wrapperMap(); |
| WrapperMap::iterator it = map.find(wrapper); |
| if (it == map.end()) |
| return; |
| |
| map.remove(it); |
| } |
| |
| static void propagateSVGDOMChange(DOMObject* wrapper, const QualifiedName& attributeName) |
| { |
| WrapperMap& map = wrapperMap(); |
| WrapperMap::iterator it = map.find(wrapper); |
| if (it == map.end()) |
| return; |
| |
| SVGElement* context = it->second; |
| ASSERT(context); |
| |
| context->svgAttributeChanged(attributeName); |
| } |
| |
| static SVGElement* svgContextForDOMObject(DOMObject* wrapper) |
| { |
| ASSERT(wrapper); |
| |
| WrapperMap& map = wrapperMap(); |
| WrapperMap::iterator it = map.find(wrapper); |
| if (it == map.end()) |
| return 0; |
| |
| SVGElement* context = it->second; |
| ASSERT(context); |
| return context; |
| } |
| |
| }; |
| |
| } |
| |
| #endif |
| #endif |