accessible/src/base/TextRange.h

branch
TOR_BUG_9701
changeset 8
97036ab72558
equal deleted inserted replaced
-1:000000000000 0:58a76541bf47
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7 #ifndef mozilla_a11y_TextRange_h__
8 #define mozilla_a11y_TextRange_h__
9
10 #include "mozilla/Move.h"
11 #include "nsAutoPtr.h"
12
13 namespace mozilla {
14 namespace a11y {
15
16 class Accessible;
17 class HyperTextAccessible;
18
19 /**
20 * Represents a text range within the text control or document.
21 */
22 class TextRange MOZ_FINAL
23 {
24 public:
25 TextRange(HyperTextAccessible* aRoot,
26 Accessible* aStartContainer, int32_t aStartOffset,
27 Accessible* aEndContainer, int32_t aEndOffset);
28 TextRange() {}
29 TextRange(TextRange&& aRange) :
30 mRoot(Move(aRange.mRoot)), mStartContainer(Move(aRange.mStartContainer)),
31 mEndContainer(Move(aRange.mEndContainer)),
32 mStartOffset(aRange.mStartOffset), mEndOffset(aRange.mEndOffset) {}
33
34 TextRange& operator= (TextRange&& aRange)
35 {
36 mRoot = Move(aRange.mRoot);
37 mStartContainer = Move(aRange.mStartContainer);
38 mEndContainer = Move(aRange.mEndContainer);
39 mStartOffset = aRange.mStartOffset;
40 mEndOffset = aRange.mEndOffset;
41 return *this;
42 }
43
44 Accessible* StartContainer() const { return mStartContainer; }
45 int32_t StartOffset() const { return mStartOffset; }
46 Accessible* EndContainer() const { return mEndContainer; }
47 int32_t EndOffset() const { return mEndOffset; }
48
49 /**
50 * Return text enclosed by the range.
51 */
52 void Text(nsAString& aText) const;
53
54 /**
55 * Return true if this TextRange object represents an actual range of text.
56 */
57 bool IsValid() const { return mRoot; }
58
59 private:
60 TextRange(const TextRange& aRange) MOZ_DELETE;
61 TextRange& operator=(const TextRange& aRange) MOZ_DELETE;
62
63 friend class HyperTextAccessible;
64 friend class xpcAccessibleTextRange;
65
66 void Set(HyperTextAccessible* aRoot,
67 Accessible* aStartContainer, int32_t aStartOffset,
68 Accessible* aEndContainer, int32_t aEndOffset);
69
70 nsRefPtr<HyperTextAccessible> mRoot;
71 nsRefPtr<Accessible> mStartContainer;
72 nsRefPtr<Accessible> mEndContainer;
73 int32_t mStartOffset;
74 int32_t mEndOffset;
75 };
76
77
78 } // namespace a11y
79 } // namespace mozilla
80
81 #endif

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