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1 /* | 1 /* |
2 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights | 2 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights |
3 * reserved. | 3 * reserved. |
4 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted provided that the following conditions | 6 * modification, are permitted provided that the following conditions |
7 * are met: | 7 * are met: |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
11 * notice, this list of conditions and the following disclaimer in the | 11 * notice, this list of conditions and the following disclaimer in the |
12 * documentation and/or other materials provided with the distribution. | 12 * documentation and/or other materials provided with the distribution. |
13 * | 13 * |
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
25 */ | 25 */ |
26 | 26 |
27 #ifndef SelectionEditor_h | 27 #ifndef SelectionEditor_h |
28 #define SelectionEditor_h | 28 #define SelectionEditor_h |
29 | 29 |
| 30 #include "core/dom/SynchronousMutationObserver.h" |
30 #include "core/editing/FrameSelection.h" | 31 #include "core/editing/FrameSelection.h" |
| 32 #include "core/editing/SelectionTemplate.h" |
31 #include "core/events/EventDispatchResult.h" | 33 #include "core/events/EventDispatchResult.h" |
32 | 34 |
33 namespace blink { | 35 namespace blink { |
34 | 36 |
35 // TODO(yosin): We will rename |SelectionEditor| to appropriate name since | 37 // TODO(yosin): We will rename |SelectionEditor| to appropriate name since |
36 // it is no longer have a changing selection functionality, it was moved to | 38 // it is no longer have a changing selection functionality, it was moved to |
37 // |SelectionModifier| class. | 39 // |SelectionModifier| class. |
38 class SelectionEditor final | 40 class SelectionEditor final : public GarbageCollectedFinalized<SelectionEditor>, |
39 : public GarbageCollectedFinalized<SelectionEditor> { | 41 public SynchronousMutationObserver { |
40 WTF_MAKE_NONCOPYABLE(SelectionEditor); | 42 WTF_MAKE_NONCOPYABLE(SelectionEditor); |
| 43 USING_GARBAGE_COLLECTED_MIXIN(SelectionEditor); |
41 | 44 |
42 public: | 45 public: |
43 static SelectionEditor* create(LocalFrame& frame) { | 46 static SelectionEditor* create(LocalFrame& frame) { |
44 return new SelectionEditor(frame); | 47 return new SelectionEditor(frame); |
45 } | 48 } |
46 virtual ~SelectionEditor(); | 49 virtual ~SelectionEditor(); |
47 void dispose(); | 50 void dispose(); |
48 | 51 |
49 bool hasEditableStyle() const { return m_selection.hasEditableStyle(); } | 52 bool hasEditableStyle() const; |
50 bool isContentEditable() const { return m_selection.isContentEditable(); } | 53 bool isContentEditable() const; |
51 bool isContentRichlyEditable() const { | 54 bool isContentRichlyEditable() const; |
52 return m_selection.isContentRichlyEditable(); | |
53 } | |
54 | |
55 bool setSelectedRange(const EphemeralRange&, | |
56 TextAffinity, | |
57 SelectionDirectionalMode, | |
58 FrameSelection::SetSelectionOptions); | |
59 | 55 |
60 template <typename Strategy> | 56 template <typename Strategy> |
61 const VisibleSelectionTemplate<Strategy>& visibleSelection() const; | 57 const VisibleSelectionTemplate<Strategy>& visibleSelection() const; |
62 void setVisibleSelection(const VisibleSelection&, | 58 const SelectionInDOMTree& selectionInDOMTree() const; |
63 FrameSelection::SetSelectionOptions); | |
64 void setVisibleSelection(const VisibleSelectionInFlatTree&, | |
65 FrameSelection::SetSelectionOptions); | |
66 | 59 |
67 void setWithoutValidation(const Position& base, const Position& extent); | 60 const VisibleSelection& computeVisibleSelectionInDOMTree() const; |
| 61 const VisibleSelectionInFlatTree& computeVisibleSelectionInFlatTree() const; |
| 62 void setSelection(const SelectionInDOMTree&); |
68 | 63 |
69 void documentAttached(Document*); | 64 void documentAttached(Document*); |
70 void documentDetached(const Document&); | |
71 | 65 |
72 // If this FrameSelection has a logical range which is still valid, this | 66 // If this FrameSelection has a logical range which is still valid, this |
73 // function return its clone. Otherwise, the return value from underlying | 67 // function return its clone. Otherwise, the return value from underlying |
74 // |VisibleSelection|'s |firstRange()| is returned. | 68 // |VisibleSelection|'s |firstRange()| is returned. |
75 Range* firstRange() const; | 69 Range* firstRange() const; |
76 | 70 |
77 // There functions are exposed for |FrameSelection|. | 71 // There functions are exposed for |FrameSelection|. |
78 void resetLogicalRange(); | 72 void resetLogicalRange(); |
79 void setLogicalRange(Range*); | 73 void setLogicalRange(Range*); |
80 | 74 |
81 // Updates |m_selection| and |m_selectionInFlatTree| with up-to-date | 75 // Updates |m_selection| and |m_selectionInFlatTree| with up-to-date |
82 // layout if needed. | 76 // layout if needed. |
83 void updateIfNeeded(); | 77 void updateIfNeeded(); |
84 | 78 |
85 void cacheRangeOfDocument(Range*); | 79 void cacheRangeOfDocument(Range*); |
86 Range* documentCachedRange() const; | 80 Range* documentCachedRange() const; |
87 void clearDocumentCachedRange(); | 81 void clearDocumentCachedRange(); |
88 | 82 |
89 DECLARE_TRACE(); | 83 DECLARE_TRACE(); |
90 | 84 |
91 private: | 85 private: |
92 explicit SelectionEditor(LocalFrame&); | 86 explicit SelectionEditor(LocalFrame&); |
93 | 87 |
94 const Document& document() const; | 88 Document& document() const; |
95 LocalFrame* frame() const { return m_frame.get(); } | 89 LocalFrame* frame() const { return m_frame.get(); } |
96 | 90 |
| 91 void assertSelectionValid() const; |
97 void clearVisibleSelection(); | 92 void clearVisibleSelection(); |
| 93 void markCacheDirty(); |
98 bool shouldAlwaysUseDirectionalSelection() const; | 94 bool shouldAlwaysUseDirectionalSelection() const; |
99 | 95 |
100 Member<Document> m_document; | 96 // VisibleSelection cache related |
| 97 bool needsUpdateVisibleSelection() const; |
| 98 void updateCachedVisibleSelectionIfNeeded() const; |
| 99 |
| 100 void didFinishTextChange(const Position& base, const Position& extent); |
| 101 void didFinishDOMMutation(); |
| 102 |
| 103 // Implementation of |SynchronousMutationObsderver| member functions. |
| 104 void contextDestroyed(Document*) final; |
| 105 void didChangeChildren(const ContainerNode&) final; |
| 106 void didMergeTextNodes(const Text& mergedNode, |
| 107 const NodeWithIndex& nodeToBeRemovedWithIndex, |
| 108 unsigned oldLength) final; |
| 109 void didSplitTextNode(const Text&) final; |
| 110 void didUpdateCharacterData(CharacterData*, |
| 111 unsigned offset, |
| 112 unsigned oldLength, |
| 113 unsigned newLength) final; |
| 114 void nodeChildrenWillBeRemoved(ContainerNode&) final; |
| 115 void nodeWillBeRemoved(Node&) final; |
| 116 |
101 Member<LocalFrame> m_frame; | 117 Member<LocalFrame> m_frame; |
102 | 118 |
103 VisibleSelection m_selection; | 119 SelectionInDOMTree m_selection; |
104 VisibleSelectionInFlatTree m_selectionInFlatTree; | |
105 bool m_observingVisibleSelection; | |
106 | 120 |
107 // TODO(editing-dev): Removing |m_logicalRange| | 121 // TODO(editing-dev): Removing |m_logicalRange| |
108 // The range specified by the user, which may not be visually canonicalized | 122 // The range specified by the user, which may not be visually canonicalized |
109 // (hence "logical"). This will be invalidated if the underlying | 123 // (hence "logical"). This will be invalidated if the underlying |
110 // |VisibleSelection| changes. If that happens, this variable will | 124 // |VisibleSelection| changes. If that happens, this variable will |
111 // become |nullptr|, in which case logical positions == visible positions. | 125 // become |nullptr|, in which case logical positions == visible positions. |
112 Member<Range> m_logicalRange; | 126 Member<Range> m_logicalRange; |
| 127 |
113 // If document is root, document.getSelection().addRange(range) is cached on | 128 // If document is root, document.getSelection().addRange(range) is cached on |
114 // this. | 129 // this. |
115 Member<Range> m_cachedRange; | 130 Member<Range> m_cachedRange; |
| 131 |
| 132 mutable VisibleSelection m_cachedVisibleSelectionInDOMTree; |
| 133 mutable VisibleSelectionInFlatTree m_cachedVisibleSelectionInFlatTree; |
| 134 mutable uint64_t m_styleVersion = static_cast<uint64_t>(-1); |
| 135 mutable bool m_cacheIsDirty = false; |
116 }; | 136 }; |
117 | 137 |
118 } // namespace blink | 138 } // namespace blink |
119 | 139 |
120 #endif // SelectionEditor_h | 140 #endif // SelectionEditor_h |
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