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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 library observable; | 5 library observable; |
6 | 6 |
7 part 'ChangeEvent.dart'; | 7 part 'ChangeEvent.dart'; |
8 part 'EventBatch.dart'; | 8 part 'EventBatch.dart'; |
9 | 9 |
10 /** | 10 /** |
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138 ObservableList([Observable parent = null]) | 138 ObservableList([Observable parent = null]) |
139 : super(parent), _internal = new List<T>(); | 139 : super(parent), _internal = new List<T>(); |
140 | 140 |
141 T operator [](int index) => _internal[index]; | 141 T operator [](int index) => _internal[index]; |
142 | 142 |
143 void operator []=(int index, T value) { | 143 void operator []=(int index, T value) { |
144 recordListUpdate(index, value, _internal[index]); | 144 recordListUpdate(index, value, _internal[index]); |
145 _internal[index] = value; | 145 _internal[index] = value; |
146 } | 146 } |
147 | 147 |
148 void set last(T value) { | |
149 if (length == 0) throw new StateError("No element"); | |
150 int index = length - 1; | |
151 recordListUpdate(index, value, _internal[index]); | |
152 _internal[index] = value; | |
153 } | |
154 | |
155 int get length => _internal.length; | 148 int get length => _internal.length; |
156 | 149 |
157 void set length(int value) { | 150 void set length(int value) { |
158 _internal.length = value; | 151 _internal.length = value; |
159 recordGlobalChange(); | 152 recordGlobalChange(); |
160 } | 153 } |
161 | 154 |
162 void clear() { | 155 void clear() { |
163 _internal.clear(); | 156 _internal.clear(); |
164 recordGlobalChange(); | 157 recordGlobalChange(); |
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361 // Only fire on an actual change. | 354 // Only fire on an actual change. |
362 if (!identical(newValue, _value)) { | 355 if (!identical(newValue, _value)) { |
363 final oldValue = _value; | 356 final oldValue = _value; |
364 _value = newValue; | 357 _value = newValue; |
365 recordPropertyUpdate("value", newValue, oldValue); | 358 recordPropertyUpdate("value", newValue, oldValue); |
366 } | 359 } |
367 } | 360 } |
368 | 361 |
369 T _value; | 362 T _value; |
370 } | 363 } |
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