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Side by Side Diff: runtime/observatory/lib/src/elements/nav/menu_item.dart

Issue 2160123002: Converted Observatory nav-menu-item element (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: Better Tests Created 4 years, 5 months ago
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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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