1/*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
4 * Copyright (C) 2013 Google Inc. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB.  If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 *
21 */
22
23#ifndef ElementStyleResources_h
24#define ElementStyleResources_h
25
26#include "core/CSSPropertyNames.h"
27#include "platform/graphics/Color.h"
28#include "platform/heap/Handle.h"
29#include "wtf/HashMap.h"
30#include "wtf/Noncopyable.h"
31
32namespace blink {
33
34class CSSCursorImageValue;
35class CSSImageValue;
36class CSSImageGeneratorValue;
37class CSSImageSetValue;
38class CSSSVGDocumentValue;
39class CSSValue;
40class FilterOperation;
41class StyleImage;
42class TextLinkColors;
43
44typedef WillBeHeapHashMap<FilterOperation*, RefPtrWillBeMember<CSSSVGDocumentValue> > PendingSVGDocumentMap;
45typedef WillBeHeapHashMap<CSSPropertyID, RefPtrWillBeMember<CSSValue> > PendingImagePropertyMap;
46
47// Holds information about resources, requested by stylesheets.
48// Lifetime: per-element style resolve.
49class ElementStyleResources {
50STACK_ALLOCATED();
51WTF_MAKE_NONCOPYABLE(ElementStyleResources);
52public:
53    ElementStyleResources();
54
55    PassRefPtr<StyleImage> styleImage(Document&, const TextLinkColors&, Color currentColor, CSSPropertyID, CSSValue*);
56
57    PassRefPtr<StyleImage> generatedOrPendingFromValue(CSSPropertyID, CSSImageGeneratorValue*);
58    PassRefPtr<StyleImage> cachedOrPendingFromValue(Document&, CSSPropertyID, CSSImageValue*);
59    PassRefPtr<StyleImage> setOrPendingFromValue(CSSPropertyID, CSSImageSetValue*);
60    PassRefPtr<StyleImage> cursorOrPendingFromValue(CSSPropertyID, CSSCursorImageValue*);
61
62    const PendingImagePropertyMap& pendingImageProperties() const { return m_pendingImageProperties; }
63    const PendingSVGDocumentMap& pendingSVGDocuments() const { return m_pendingSVGDocuments; }
64
65    void clearPendingImageProperties();
66    void clearPendingSVGDocuments();
67
68    float deviceScaleFactor() const { return m_deviceScaleFactor; }
69    void setDeviceScaleFactor(float deviceScaleFactor) { m_deviceScaleFactor = deviceScaleFactor; }
70
71    void addPendingSVGDocument(FilterOperation*, CSSSVGDocumentValue*);
72
73private:
74    PendingImagePropertyMap m_pendingImageProperties;
75    PendingSVGDocumentMap m_pendingSVGDocuments;
76    float m_deviceScaleFactor;
77};
78
79} // namespace blink
80
81#endif // ElementStyleResources_h
82