paper-toggle-button.html
8.04 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
<!--
@license
Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<link rel="import" href="../polymer/polymer.html">
<link rel="import" href="../iron-flex-layout/iron-flex-layout.html">
<link rel="import" href="../paper-styles/color.html">
<link rel="import" href="../paper-styles/default-theme.html">
<link rel="import" href="../paper-ripple/paper-ripple.html">
<link rel="import" href="../paper-behaviors/paper-checked-element-behavior.html">
<!--
Material design: [Switch](https://www.google.com/design/spec/components/selection-controls.html#selection-controls-switch)
`paper-toggle-button` provides a ON/OFF switch that user can toggle the state
by tapping or by dragging the switch.
Example:
<paper-toggle-button></paper-toggle-button>
### Styling
The following custom properties and mixins are available for styling:
Custom property | Description | Default
----------------|-------------|----------
`--paper-toggle-button-unchecked-bar-color` | Slider color when the input is not checked | `#000000`
`--paper-toggle-button-unchecked-button-color` | Button color when the input is not checked | `--paper-grey-50`
`--paper-toggle-button-unchecked-ink-color` | Selected/focus ripple color when the input is not checked | `--dark-primary-color`
`--paper-toggle-button-checked-bar-color` | Slider button color when the input is checked | `--default-primary-color`
`--paper-toggle-button-checked-button-color` | Button color when the input is checked | `--default-primary-color`
`--paper-toggle-button-checked-ink-color` | Selected/focus ripple color when the input is checked | `--default-primary-color`
`--paper-toggle-button-unchecked-bar` | Mixin applied to the slider when the input is not checked | `{}`
`--paper-toggle-button-unchecked-button` | Mixin applied to the slider button when the input is not checked | `{}`
`--paper-toggle-button-checked-bar` | Mixin applied to the slider when the input is checked | `{}`
`--paper-toggle-button-checked-button` | Mixin applied to the slider button when the input is checked | `{}`
`--paper-toggle-button-label-color` | Label color | `--primary-text-color`
`--paper-toggle-button-label-spacing` | Spacing between the label and the button | `8px`
@group Paper Elements
@element paper-toggle-button
@hero hero.svg
@demo demo/index.html
-->
<dom-module id="paper-toggle-button">
<template strip-whitespace>
<style>
:host {
display: inline-block;
@apply(--layout-horizontal);
@apply(--layout-center);
}
:host([disabled]) {
pointer-events: none;
}
:host(:focus) {
outline:none;
}
.toggle-bar {
position: absolute;
height: 100%;
width: 100%;
border-radius: 8px;
pointer-events: none;
opacity: 0.4;
transition: background-color linear .08s;
background-color: var(--paper-toggle-button-unchecked-bar-color, #000000);
@apply(--paper-toggle-button-unchecked-bar);
}
.toggle-button {
position: absolute;
top: -3px;
height: 20px;
width: 20px;
border-radius: 50%;
box-shadow: 0 1px 5px 0 rgba(0, 0, 0, 0.6);
transition: -webkit-transform linear .08s, background-color linear .08s;
transition: transform linear .08s, background-color linear .08s;
will-change: transform;
background-color: var(--paper-toggle-button-unchecked-button-color, --paper-grey-50);
@apply(--paper-toggle-button-unchecked-button);
}
.toggle-button.dragging {
-webkit-transition: none;
transition: none;
}
:host([checked]:not([disabled])) .toggle-bar {
opacity: 0.5;
background-color: var(--paper-toggle-button-checked-bar-color, --default-primary-color);
@apply(--paper-toggle-button-checked-bar);
}
:host([disabled]) .toggle-bar {
background-color: #000;
opacity: 0.12;
}
:host([checked]) .toggle-button {
-webkit-transform: translate(16px, 0);
transform: translate(16px, 0);
}
:host([checked]:not([disabled])) .toggle-button {
background-color: var(--paper-toggle-button-checked-button-color, --default-primary-color);
@apply(--paper-toggle-button-checked-button);
}
:host([disabled]) .toggle-button {
background-color: #bdbdbd;
opacity: 1;
}
.toggle-ink {
position: absolute;
top: -14px;
left: -14px;
width: 48px;
height: 48px;
opacity: 0.5;
pointer-events: none;
color: var(--paper-toggle-button-unchecked-ink-color, --primary-text-color);
}
:host([checked]) .toggle-ink {
color: var(--paper-toggle-button-checked-ink-color, --default-primary-color);
}
.toggle-container {
display: inline-block;
position: relative;
width: 36px;
height: 14px;
/* The toggle button has an absolute position of -3px; The extra 1px
/* accounts for the toggle button shadow box. */
margin: 4px 1px;
}
.toggle-label {
position: relative;
display: inline-block;
vertical-align: middle;
padding-left: var(--paper-toggle-button-label-spacing, 8px);
white-space: normal;
pointer-events: none;
color: var(--paper-toggle-button-label-color, --primary-text-color);
}
</style>
<div class="toggle-container">
<div id="toggleBar" class="toggle-bar"></div>
<div id="toggleButton" class="toggle-button"></div>
</div>
<div class="toggle-label"><content></content></div>
</template>
<script>
Polymer({
is: 'paper-toggle-button',
behaviors: [
Polymer.PaperCheckedElementBehavior
],
hostAttributes: {
role: 'button',
'aria-pressed': 'false',
tabindex: 0
},
properties: {
/**
* Fired when the checked state changes due to user interaction.
*
* @event change
*/
/**
* Fired when the checked state changes.
*
* @event iron-change
*/
},
listeners: {
track: '_ontrack'
},
_ontrack: function(event) {
var track = event.detail;
if (track.state === 'start') {
this._trackStart(track);
} else if (track.state === 'track') {
this._trackMove(track);
} else if (track.state === 'end') {
this._trackEnd(track);
}
},
_trackStart: function(track) {
this._width = this.$.toggleBar.offsetWidth / 2;
/*
* keep an track-only check state to keep the dragging behavior smooth
* while toggling activations
*/
this._trackChecked = this.checked;
this.$.toggleButton.classList.add('dragging');
},
_trackMove: function(track) {
var dx = track.dx;
this._x = Math.min(this._width,
Math.max(0, this._trackChecked ? this._width + dx : dx));
this.translate3d(this._x + 'px', 0, 0, this.$.toggleButton);
this._userActivate(this._x > (this._width / 2));
},
_trackEnd: function(track) {
this.$.toggleButton.classList.remove('dragging');
this.transform('', this.$.toggleButton);
},
// customize the element's ripple
_createRipple: function() {
this._rippleContainer = this.$.toggleButton;
var ripple = Polymer.PaperRippleBehavior._createRipple();
ripple.id = 'ink';
ripple.setAttribute('recenters', '');
ripple.classList.add('circle', 'toggle-ink');
return ripple;
}
});
</script>
</dom-module>