| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| part of observe; |
| |
| /** |
| * Use `@observable` to make a field automatically observable, or to indicate |
| * that a property is observable. |
| */ |
| const ObservableProperty observable = const ObservableProperty(); |
| |
| /** |
| * An annotation that is used to make a property observable. |
| * Normally this is used via the [observable] constant, for example: |
| * |
| * class Monster { |
| * @observable int health; |
| * } |
| * |
| * If needed, you can subclass this to create another annotation that will also |
| * be treated as observable. |
| */ |
| // Note: observable properties imply reflectable. |
| class ObservableProperty { |
| const ObservableProperty(); |
| } |
| |
| |
| /** |
| * Use `@reflectable` to make a type or member available to reflection in the |
| * observe package. This is necessary to make the member visible to |
| * [PathObserver], or similar systems, once the code is deployed. |
| */ |
| const Reflectable reflectable = const Reflectable(); |
| |
| /** |
| * An annotation that is used to make a type or member reflectable. This makes |
| * it available to [PathObserver] at runtime. For example: |
| * |
| * @reflectable |
| * class Monster extends ChangeNotifier { |
| * int _health; |
| * int get health => _health; |
| * ... |
| * } |
| * ... |
| * // This will work even if the code has been tree-shaken/minified: |
| * final monster = new Monster(); |
| * new PathObserver(monster, 'health').changes.listen(...); |
| */ |
| class Reflectable { |
| const Reflectable(); |
| } |