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| 1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
| 2 <!-- | 2 <!-- |
| 3 Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 3 Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| 4 for details. All rights reserved. Use of this source code is governed by a | 4 for details. All rights reserved. Use of this source code is governed by a |
| 5 BSD-style license that can be found in the LICENSE file. | 5 BSD-style license that can be found in the LICENSE file. |
| 6 --> | 6 --> |
| 7 <html> | 7 <html> |
| 8 <head> | 8 <head> |
| 9 <meta charset="utf-8"> | 9 <meta charset="utf-8"> |
| 10 </head> | 10 </head> |
| 11 <body> | 11 <body> |
| 12 <element name="editable-label" extends="div" apply-author-styles> | 12 <polymer-element name="editable-label" attributes="value"> |
| 13 <template> | 13 <template> |
| 14 <template if="!editing"> | 14 <template bind if="{{!editing}}"> |
| 15 <label class='edit-label' on-double-click="edit()">{{value}}</label> | 15 <label class='edit-label' on-double-click="edit">{{value}}</label> |
| 16 </template> | 16 </template> |
| 17 <template if="editing"> | 17 <template bind if="{{editing}}"> |
| 18 <form on-submit="update($event)"> | 18 <form on-submit="update"> |
| 19 <input id="edit" class="edit {{editing ? 'editing' : ''}}" | 19 <input id="edit" class="edit editing" |
| 20 on-blur="update($event)" | 20 on-blur="update" on-key-up="maybeCancel"> |
| 21 on-key-up="maybeCancel($event)"> | |
| 22 </form> | 21 </form> |
| 23 </template> | 22 </template> |
| 24 </template> | 23 </template> |
| 25 <script type="application/dart"> | 24 <script type="application/dart" src="editable_label.dart"></script> |
| 26 import 'dart:html'; | 25 </polymer-element> |
| 27 import 'package:web_ui/web_ui.dart'; | |
| 28 | |
| 29 /** | |
| 30 * Label whose [value] can be edited by double clicking. When editing, it | |
| 31 * displays a form and input element, otherwise it displays the label. You | |
| 32 * can enable two-way binding like this: | |
| 33 * | |
| 34 * <editable-label bind-value="dartAsignableValue"> | |
| 35 * </editable-label> | |
| 36 */ | |
| 37 @observable | |
| 38 class EditableLabel extends WebComponent { | |
| 39 bool editing; | |
| 40 String value; | |
| 41 | |
| 42 InputElement get _editBox => getShadowRoot("editable-label").query('#edit'); | |
| 43 | |
| 44 void created() { | |
| 45 super.created(); | |
| 46 editing = false; | |
| 47 value = ''; | |
| 48 } | |
| 49 | |
| 50 void edit() { | |
| 51 editing = true; | |
| 52 | |
| 53 // This causes _editBox to be inserted. | |
| 54 deliverChangesSync(); | |
| 55 | |
| 56 // For IE and Firefox: use .focus(), then reset the value to move the | |
| 57 // cursor to the end. | |
| 58 _editBox.focus(); | |
| 59 _editBox.value = ''; | |
| 60 _editBox.value = value; | |
| 61 } | |
| 62 | |
| 63 void update(Event e) { | |
| 64 e.preventDefault(); // don't submit the form | |
| 65 if (!editing) return; // bail if user canceled | |
| 66 value = _editBox.value; | |
| 67 editing = false; | |
| 68 } | |
| 69 | |
| 70 void maybeCancel(KeyEvent e) { | |
| 71 if (e.keyCode == KeyCode.ESC) { | |
| 72 editing = false; | |
| 73 } | |
| 74 } | |
| 75 } | |
| 76 </script> | |
| 77 </element> | |
| 78 </body> | 26 </body> |
| 79 </html> | 27 </html> |
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Chromium Code Reviews
Issue 23224003:
move polymer.dart into dart svn (Closed)
Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart