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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 import 'package:observatory/src/elements/helpers/tag.dart'; | |
8 import 'package:observatory/src/elements/helpers/rendering_scheduler.dart'; | |
9 | |
10 class NavMenuItemElement extends HtmlElement implements Renderable { | |
11 static final StyleElement _style = () { | |
12 var style = new StyleElement(); | |
13 style.text = 'li.nav-menu-item {' | |
Cutch
2016/07/19 14:20:44
use ''' quotes with new lines.
cbernaschina
2016/07/19 19:17:55
Done.
| |
14 'float: none;' | |
15 'border-top: 1px solid #677;' | |
16 'border-bottom: 1px solid #556; position: relative;' | |
17 '}' | |
18 'li.nav-menu-item:hover {' | |
19 'background: #455;' | |
20 '}' | |
21 'li.nav-menu-item > a {' | |
22 'display: block;' | |
23 'padding: 12px 12px;' | |
24 'color: white;' | |
25 'text-decoration: none;' | |
26 '}' | |
27 'li.nav-menu-item > ul {' | |
28 'display: none;' | |
29 'position: absolute;' | |
30 'top:0;' | |
31 'left: 100%;' | |
32 'list-style: none;' | |
33 'padding: 0;' | |
34 'margin-left: 0;' | |
35 'width: auto;' | |
36 'z-index: 1000;' | |
37 'font: 400 16px \'Montserrat\', sans-serif;' | |
38 'color: white;' | |
39 'background: #567;' | |
40 '}' | |
41 'li.nav-menu-item > ul:after {' | |
42 'content: ""; clear: both; display: block;' | |
43 '}' | |
44 'li.nav-menu-item:hover > ul {' | |
45 'display: block;' | |
46 '}'; | |
47 return style; | |
48 }(); | |
49 | |
50 static const tag = const Tag<NavMenuItemElement>('nav-menu-item-wrapped'); | |
51 | |
52 RenderingScheduler _r; | |
53 | |
54 Stream<RenderedEvent<NavMenuItemElement>> get onRendered => _r.onRendered; | |
55 | |
56 String _label; | |
57 String _link; | |
58 String get label => _label; | |
59 String get link => _link; | |
60 set label(String value) { | |
61 if (_label != value) { | |
62 _label = value; | |
63 _r.dirty(); | |
64 } else { | |
65 _r.scheduleNotification(); | |
66 } | |
67 } | |
68 set link(String value) { | |
69 if (_link != value) { | |
70 _link = value; | |
71 _r.dirty(); | |
72 } else { | |
73 _r.scheduleNotification(); | |
74 } | |
75 } | |
76 | |
77 | |
78 factory NavMenuItemElement(String label, {String link, | |
79 RenderingQueue queue}) { | |
80 assert(label != null); | |
81 NavMenuItemElement e = document.createElement(tag.name); | |
82 e._r = new RenderingScheduler(e, queue: queue); | |
83 e._label = label; | |
84 e._link = link; | |
85 return e; | |
86 } | |
87 | |
88 NavMenuItemElement.created() : super.created() { createShadowRoot(); } | |
89 | |
90 @override | |
91 void attached() { super.attached(); _r.enable(); } | |
92 | |
93 @override | |
94 void detached() { | |
95 super.detached(); _r.disable(notify: true); | |
96 shadowRoot.children = []; | |
97 } | |
98 | |
99 void render() { | |
100 shadowRoot.children = [ | |
101 _style.clone(true), | |
102 new LIElement() | |
103 ..classes = ['nav-menu-item'] | |
104 ..children = [ | |
105 new AnchorElement(href: '#$link') | |
106 ..text = label, | |
107 new UListElement() | |
108 ..children = [ | |
109 new ContentElement() | |
110 ] | |
111 ] | |
112 ]; | |
113 } | |
114 } | |
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