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1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file | |
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. | |
4 | |
5 import 'dart:html'; | |
6 import 'dart:async'; | |
7 | |
8 import 'package:observatory/app.dart'; | |
9 import 'package:observatory/src/elements/helpers/tag.dart'; | |
10 import 'package:observatory/src/elements/shims/binding.dart'; | |
11 import 'package:observatory/src/elements/nav/refresh.dart'; | |
12 | |
13 @bindable | |
14 class NavRefreshElementWrapper extends HtmlElement { | |
15 static const binder = const Binder<NavRefreshElementWrapper>(const { | |
16 'callback': #callback, 'label': #label | |
17 }); | |
18 | |
19 static const tag = const Tag<NavRefreshElementWrapper>('nav-refresh'); | |
20 | |
21 Function _callback; | |
22 String _label; | |
23 | |
24 Function get callback => _callback; | |
25 String get label => _label; | |
26 | |
27 set callback(Function value) { | |
28 _callback = value; | |
29 render(); | |
30 } | |
31 set label(String value) { | |
32 _label = value; | |
33 render(); | |
34 } | |
35 | |
36 NavRefreshElementWrapper.created() : super.created() { | |
37 binder.registerCallback(this); | |
38 _label = getAttribute('label') ?? 'Refresh'; | |
39 createShadowRoot(); | |
40 render(); | |
41 } | |
42 | |
43 @override | |
44 void attached() { | |
45 super.attached(); | |
46 render(); | |
47 } | |
48 | |
49 void render() { | |
50 shadowRoot.children = []; | |
51 if (_callback == null || _label == null) { | |
52 return; | |
53 } | |
54 | |
55 shadowRoot.children = [ | |
56 new StyleElement() | |
57 ..text = '''nav-refresh-wrapped > li > button { | |
58 color: #000; | |
59 margin: 3px; | |
60 padding: 8px; | |
61 border-width: 2px; | |
62 line-height: 13px; | |
63 font: 400 13px 'Montserrat', sans-serif; | |
64 } | |
65 nav-refresh-wrapped > li > button[disabled] { | |
66 color: #aaa; | |
67 cursor: wait; | |
68 } | |
69 nav-refresh-wrapped > li { | |
70 float: right; | |
71 margin: 0; | |
72 }''', | |
73 new NavRefreshElement(label: _label, | |
74 queue: ObservatoryApplication.app.queue) | |
75 ..onRefresh.listen((event) async{ | |
76 event.element.disabled = true; | |
77 try { | |
78 var future = callback(); | |
79 if (future is Future) await future; | |
80 } finally { | |
81 event.element.disabled = false; | |
82 } | |
83 }) | |
84 ]; | |
85 } | |
86 } | |
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