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#pragma once
21
22#include "RenderStyleConstants.h"
23#include <memory>
24#include <wtf/HashMap.h>
25#include <wtf/Noncopyable.h>
26
27namespace WebCore {
28
29class RenderElement;
30class RenderObject;
31class RenderStyle;
32class RenderSVGResourceContainer;
33class SVGResources;
34
35class SVGResourcesCache {
36 WTF_MAKE_NONCOPYABLE(SVGResourcesCache); WTF_MAKE_FAST_ALLOCATED;
37public:
38 SVGResourcesCache();
39 ~SVGResourcesCache();
40
41 static SVGResources* cachedResourcesForRenderer(const RenderElement&);
42
43 // Called from all SVG renderers addChild() methods.
44 static void clientWasAddedToTree(RenderObject&);
45
46 // Called from all SVG renderers removeChild() methods.
47 static void clientWillBeRemovedFromTree(RenderObject&);
48
49 // Called from all SVG renderers destroy() methods - except for RenderSVGResourceContainer.
50 static void clientDestroyed(RenderElement&);
51
52 // Called from all SVG renderers layout() methods.
53 static void clientLayoutChanged(RenderElement&);
54
55 // Called from all SVG renderers styleDidChange() methods.
56 static void clientStyleChanged(RenderElement&, StyleDifference, const RenderStyle& newStyle);
57
58 // Called from RenderSVGResourceContainer::willBeDestroyed().
59 static void resourceDestroyed(RenderSVGResourceContainer&);
60
61private:
62 void addResourcesFromRenderer(RenderElement&, const RenderStyle&);
63 void removeResourcesFromRenderer(RenderElement&);
64
65 typedef HashMap<const RenderElement*, std::unique_ptr<SVGResources>> CacheMap;
66 CacheMap m_cache;
67};
68
69} // namespace WebCore
70