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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, 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 view; | 5 library view; |
6 | 6 |
7 import 'dart:async'; | 7 import 'dart:async'; |
8 import 'dart:html'; | 8 import 'dart:html'; |
9 import 'dart:math' as Math; | 9 import 'dart:math' as Math; |
10 | 10 |
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173 void exitDocument() {} | 173 void exitDocument() {} |
174 | 174 |
175 /** Override this to perform behavior after the window is resized. */ | 175 /** Override this to perform behavior after the window is resized. */ |
176 // TODO(jmesserly): this isn't really the event we want. Ideally we want to | 176 // TODO(jmesserly): this isn't really the event we want. Ideally we want to |
177 // fire the event only if this particular View changed size. Also we should | 177 // fire the event only if this particular View changed size. Also we should |
178 // give a view the ability to measure itself when added to the document. | 178 // give a view the ability to measure itself when added to the document. |
179 void windowResized() {} | 179 void windowResized() {} |
180 | 180 |
181 /** | 181 /** |
182 * Registers the given listener callback to the given observable. Also | 182 * Registers the given listener callback to the given observable. Also |
183 * immedially invokes the callback once as if a change has just come in. This | 183 * immediately invokes the callback once as if a change has just come in. |
184 * lets you define a render() method that renders the skeleton of a view, then | 184 * This lets you define a render() method that renders the skeleton of a |
185 * register a bunch of listeners which all fire to populate the view with | 185 * view, then register a bunch of listeners which all fire to populate the |
186 * model data. | 186 * view with model data. |
187 */ | 187 */ |
188 void watch(Observable observable, void watcher(EventSummary summary)) { | 188 void watch(Observable observable, void watcher(EventSummary summary)) { |
189 // Make a fake summary for the initial watch. | 189 // Make a fake summary for the initial watch. |
190 final summary = new EventSummary(observable); | 190 final summary = new EventSummary(observable); |
191 watcher(summary); | 191 watcher(summary); |
192 | 192 |
193 attachWatch(observable, watcher); | 193 attachWatch(observable, watcher); |
194 } | 194 } |
195 | 195 |
196 /** Registers the given listener callback to the given observable. */ | 196 /** Registers the given listener callback to the given observable. */ |
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373 } | 373 } |
374 } | 374 } |
375 | 375 |
376 void _applyLayout() { | 376 void _applyLayout() { |
377 if (_layout != null) { | 377 if (_layout != null) { |
378 _layout.applyLayout(); | 378 _layout.applyLayout(); |
379 } | 379 } |
380 _applyLayoutToChildren(); | 380 _applyLayoutToChildren(); |
381 } | 381 } |
382 } | 382 } |
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