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 SVGResourcesCache_h
21#define SVGResourcesCache_h
22
23#if ENABLE(SVG)
24#include "RenderStyleConstants.h"
25#include <wtf/HashMap.h>
26
27namespace WebCore {
28
29class RenderObject;
30class RenderStyle;
31class RenderSVGResourceContainer;
32class SVGResources;
33
34class SVGResourcesCache {
35    WTF_MAKE_NONCOPYABLE(SVGResourcesCache); WTF_MAKE_FAST_ALLOCATED;
36public:
37    SVGResourcesCache();
38    ~SVGResourcesCache();
39
40    void addResourcesFromRenderObject(RenderObject*, const RenderStyle*);
41    void removeResourcesFromRenderObject(RenderObject*);
42    static SVGResources* cachedResourcesForRenderObject(RenderObject*);
43
44    // Called from all SVG renderers destroy() methods - except for RenderSVGResourceContainer.
45    static void clientDestroyed(RenderObject*);
46
47    // Called from all SVG renderers layout() methods.
48    static void clientLayoutChanged(RenderObject*);
49
50    // Called from all SVG renderers styleDidChange() methods.
51    static void clientStyleChanged(RenderObject*, StyleDifference, const RenderStyle* newStyle);
52
53    // Called from all SVG renderers updateFromElement() methods.
54    static void clientUpdatedFromElement(RenderObject*, const RenderStyle* newStyle);
55
56    // Called from RenderSVGResourceContainer::destroy().
57    static void resourceDestroyed(RenderSVGResourceContainer*);
58
59private:
60    HashMap<RenderObject*, SVGResources*> m_cache;
61};
62
63}
64
65#endif
66#endif
67