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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * Copyright (C) 2006 Apple Computer, Inc. | 3 * Copyright (C) 2006 Apple Computer, Inc. |
4 * | 4 * |
5 * This library is free software; you can redistribute it and/or | 5 * This library is free software; you can redistribute it and/or |
6 * modify it under the terms of the GNU Library General Public | 6 * modify it under the terms of the GNU Library General Public |
7 * License as published by the Free Software Foundation; either | 7 * License as published by the Free Software Foundation; either |
8 * version 2 of the License, or (at your option) any later version. | 8 * version 2 of the License, or (at your option) any later version. |
9 * | 9 * |
10 * This library is distributed in the hope that it will be useful, | 10 * This library is distributed in the hope that it will be useful, |
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25 #include "core/editing/Position.h" | 25 #include "core/editing/Position.h" |
26 #include "core/editing/VisibleSelection.h" | 26 #include "core/editing/VisibleSelection.h" |
27 #include "platform/heap/Handle.h" | 27 #include "platform/heap/Handle.h" |
28 | 28 |
29 namespace blink { | 29 namespace blink { |
30 | 30 |
31 class FrameSelection; | 31 class FrameSelection; |
32 | 32 |
33 class LayoutSelection final : public GarbageCollected<LayoutSelection> { | 33 class LayoutSelection final : public GarbageCollected<LayoutSelection> { |
34 public: | 34 public: |
35 enum class PaintHint { kHide, kKeep, kPaint }; | |
36 | |
37 static LayoutSelection* Create(FrameSelection& frame_selection) { | 35 static LayoutSelection* Create(FrameSelection& frame_selection) { |
38 return new LayoutSelection(frame_selection); | 36 return new LayoutSelection(frame_selection); |
39 } | 37 } |
40 | 38 |
41 bool HasPendingSelection() const { return has_pending_selection_; } | 39 bool HasPendingSelection() const { return has_pending_selection_; } |
42 void SetHasPendingSelection(PaintHint); | 40 void SetHasPendingSelection() { has_pending_selection_ = true; } |
43 void Commit(); | 41 void Commit(); |
44 | 42 |
45 IntRect SelectionBounds(); | 43 IntRect SelectionBounds(); |
46 void InvalidatePaintForSelection(); | 44 void InvalidatePaintForSelection(); |
47 enum SelectionPaintInvalidationMode { | 45 enum SelectionPaintInvalidationMode { |
48 kPaintInvalidationNewXOROld, | 46 kPaintInvalidationNewXOROld, |
49 kPaintInvalidationNewMinusOld | 47 kPaintInvalidationNewMinusOld |
50 }; | 48 }; |
51 void SetSelection( | 49 void SetSelection( |
52 LayoutObject* start, | 50 LayoutObject* start, |
53 int start_pos, | 51 int start_pos, |
54 LayoutObject*, | 52 LayoutObject*, |
55 int end_pos, | 53 int end_pos, |
56 SelectionPaintInvalidationMode = kPaintInvalidationNewXOROld); | 54 SelectionPaintInvalidationMode = kPaintInvalidationNewXOROld); |
57 void ClearSelection(); | 55 void ClearSelection(); |
58 std::pair<int, int> SelectionStartEnd(); | 56 std::pair<int, int> SelectionStartEnd(); |
59 void OnDocumentShutdown(); | 57 void OnDocumentShutdown(); |
60 | 58 |
61 DECLARE_TRACE(); | 59 DECLARE_TRACE(); |
62 | 60 |
63 private: | 61 private: |
64 LayoutSelection(FrameSelection&); | 62 LayoutSelection(FrameSelection&); |
65 | 63 |
66 SelectionInFlatTree CalcVisibleSelection( | 64 SelectionInFlatTree CalcVisibleSelection( |
67 const VisibleSelectionInFlatTree&) const; | 65 const VisibleSelectionInFlatTree&) const; |
68 | 66 |
69 Member<FrameSelection> frame_selection_; | 67 Member<FrameSelection> frame_selection_; |
70 bool has_pending_selection_ : 1; | 68 bool has_pending_selection_ : 1; |
71 bool force_hide_ : 1; | |
72 | 69 |
73 // The current selection represented as 2 boundaries. | 70 // The current selection represented as 2 boundaries. |
74 // Selection boundaries are represented in LayoutView by a tuple | 71 // Selection boundaries are represented in LayoutView by a tuple |
75 // (LayoutObject, DOM node offset). | 72 // (LayoutObject, DOM node offset). |
76 // See http://www.w3.org/TR/dom/#range for more information. | 73 // See http://www.w3.org/TR/dom/#range for more information. |
77 // | 74 // |
78 // |m_selectionStartPos| and |m_selectionEndPos| are only valid for | 75 // |m_selectionStartPos| and |m_selectionEndPos| are only valid for |
79 // |Text| node without 'transform' or 'first-letter'. | 76 // |Text| node without 'transform' or 'first-letter'. |
80 // | 77 // |
81 // Those are used for selection painting and paint invalidation upon | 78 // Those are used for selection painting and paint invalidation upon |
82 // selection change. | 79 // selection change. |
83 LayoutObject* selection_start_; | 80 LayoutObject* selection_start_; |
84 LayoutObject* selection_end_; | 81 LayoutObject* selection_end_; |
85 | 82 |
86 // TODO(yosin): Clarify the meaning of these variables. editing/ passes | 83 // TODO(yosin): Clarify the meaning of these variables. editing/ passes |
87 // them as offsets in the DOM tree but layout uses them as offset in the | 84 // them as offsets in the DOM tree but layout uses them as offset in the |
88 // layout tree. | 85 // layout tree. |
89 int selection_start_pos_; | 86 int selection_start_pos_; |
90 int selection_end_pos_; | 87 int selection_end_pos_; |
91 }; | 88 }; |
92 | 89 |
93 } // namespace blink | 90 } // namespace blink |
94 | 91 |
95 #endif | 92 #endif |
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