1/*
2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
3 *           (C) 2000 Antti Koivisto (koivisto@kde.org)
4 *           (C) 2000 Dirk Mueller (mueller@kde.org)
5 *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
6 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB.  If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 *
23 */
24
25#ifndef RenderSelectionInfo_h
26#define RenderSelectionInfo_h
27
28#include "IntRect.h"
29#include "RenderBox.h"
30
31namespace WebCore {
32
33class RenderSelectionInfoBase {
34    WTF_MAKE_NONCOPYABLE(RenderSelectionInfoBase); WTF_MAKE_FAST_ALLOCATED;
35public:
36    RenderSelectionInfoBase()
37        : m_object(0)
38        , m_repaintContainer(0)
39        , m_state(RenderObject::SelectionNone)
40    {
41    }
42
43    RenderSelectionInfoBase(RenderObject* o)
44        : m_object(o)
45        , m_repaintContainer(o->containerForRepaint())
46        , m_state(o->selectionState())
47    {
48    }
49
50    RenderObject* object() const { return m_object; }
51    RenderBoxModelObject* repaintContainer() const { return m_repaintContainer; }
52    RenderObject::SelectionState state() const { return m_state; }
53
54protected:
55    RenderObject* m_object;
56    RenderBoxModelObject* m_repaintContainer;
57    RenderObject::SelectionState m_state;
58};
59
60// This struct is used when the selection changes to cache the old and new state of the selection for each RenderObject.
61class RenderSelectionInfo : public RenderSelectionInfoBase {
62public:
63    RenderSelectionInfo(RenderObject* o, bool clipToVisibleContent)
64        : RenderSelectionInfoBase(o)
65        , m_rect(o->needsLayout() ? IntRect() : o->selectionRectForRepaint(m_repaintContainer, clipToVisibleContent))
66    {
67    }
68
69    void repaint()
70    {
71        m_object->repaintUsingContainer(m_repaintContainer, m_rect);
72    }
73
74    IntRect rect() const { return m_rect; }
75
76private:
77    IntRect m_rect; // relative to repaint container
78};
79
80
81// This struct is used when the selection changes to cache the old and new state of the selection for each RenderBlock.
82class RenderBlockSelectionInfo : public RenderSelectionInfoBase {
83public:
84    RenderBlockSelectionInfo(RenderBlock* b)
85        : RenderSelectionInfoBase(b)
86        , m_rects(b->needsLayout() ? GapRects() : block()->selectionGapRectsForRepaint(m_repaintContainer))
87    {
88    }
89
90    void repaint()
91    {
92        m_object->repaintUsingContainer(m_repaintContainer, m_rects);
93    }
94
95    RenderBlock* block() const { return toRenderBlock(m_object); }
96    GapRects rects() const { return m_rects; }
97
98private:
99    GapRects m_rects; // relative to repaint container
100};
101
102} // namespace WebCore
103
104
105#endif // RenderSelectionInfo_h
106