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1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 import '../widgets/basic.dart'; | |
6 import 'editable_string.dart'; | |
7 import 'editable_text.dart'; | |
8 import 'keyboard.dart'; | |
9 | |
10 typedef void ValueChanged(value); | |
11 | |
12 class Input extends Component { | |
13 | |
14 Input({String key, | |
15 this.placeholder, | |
16 this.onChanged, | |
17 this.focused}) | |
18 : super(key: key, stateful: true) { | |
19 _editableValue = new EditableString( | |
20 text: _value, | |
21 onUpdated: _handleTextUpdated | |
22 ); | |
23 } | |
24 | |
25 // static final Style _style = new Style(''' | |
26 // transform: translateX(0); | |
27 // margin: 8px; | |
28 // padding: 8px; | |
29 // border-bottom: 1px solid ${Grey[200]}; | |
30 // align-self: center; | |
31 // height: 1.2em; | |
32 // white-space: pre; | |
33 // overflow: hidden;''' | |
34 // ); | |
35 | |
36 // static final Style _placeholderStyle = new Style(''' | |
37 // top: 8px; | |
38 // left: 8px; | |
39 // position: absolute; | |
40 // ${typography.black.caption};''' | |
41 // ); | |
42 | |
43 // static final String _focusedInlineStyle = ''' | |
44 // padding: 7px; | |
45 // border-bottom: 2px solid ${Blue[500]};'''; | |
46 | |
47 String placeholder; | |
48 ValueChanged onChanged; | |
49 bool focused = false; | |
50 | |
51 void syncFields(Input source) { | |
52 placeholder = source.placeholder; | |
53 onChanged = source.onChanged; | |
54 focused = source.focused; | |
55 } | |
56 | |
57 String _value = ''; | |
58 bool _isAttachedToKeyboard = false; | |
59 EditableString _editableValue; | |
60 | |
61 void _handleTextUpdated() { | |
62 scheduleBuild(); | |
63 if (_value != _editableValue.text) { | |
64 _value = _editableValue.text; | |
65 if (onChanged != null) | |
66 onChanged(_value); | |
67 } | |
68 } | |
69 | |
70 Widget build() { | |
71 if (focused && !_isAttachedToKeyboard) { | |
72 keyboard.show(_editableValue.stub); | |
73 _isAttachedToKeyboard = true; | |
74 } | |
75 | |
76 List<Widget> children = []; | |
77 | |
78 if (placeholder != null && _value.isEmpty) { | |
79 children.add(new Container( | |
80 // style: _placeholderStyle, | |
81 child: new Text(placeholder) | |
82 )); | |
83 } | |
84 | |
85 children.add(new EditableText(value: _editableValue, focused: focused)); | |
86 | |
87 return new Listener( | |
88 // style: _style, | |
89 // inlineStyle: focused ? _focusedInlineStyle : null, | |
90 child: new Stack(children), | |
91 onPointerDown: (_) => keyboard.showByRequest() | |
92 ); | |
93 } | |
94 | |
95 void didUnmount() { | |
96 if (_isAttachedToKeyboard) | |
97 keyboard.hide(); | |
98 super.didUnmount(); | |
99 } | |
100 | |
101 } | |
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