paper-toggle-button.html
5.04 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
<!--
@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="../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-inky-focus-behavior.html">
<!--
`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 | `--google-green-500`
`--paper-toggle-button-checked-button-color` | Button color when the input is checked | `--google-green-500`
`--paper-toggle-button-checked-ink-color` | Selected/focus ripple color when the input is checked | `--google-green-500`
@group Paper Elements
@element paper-toggle-button
@hero hero.svg
@demo demo/index.html
-->
<dom-module id="paper-toggle-button">
<link rel="import" type="css" href="paper-toggle-button.css">
<template>
<div id="toggleContainer">
<div id="toggleBar" class="toggle-bar"></div>
<div id="toggleButton" class="toggle-button">
<paper-ripple id="ink" class="toggle-ink circle" recenters></paper-ripple>
</div>
</div>
</template>
<script>
Polymer({
is: 'paper-toggle-button',
behaviors: [
Polymer.PaperInkyFocusBehavior
],
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
*/
/**
* Gets or sets the state, `true` is checked and `false` is unchecked.
*
* @attribute checked
* @type boolean
* @default false
*/
checked: {
type: Boolean,
value: false,
reflectToAttribute: true,
notify: true,
observer: '_checkedChanged'
},
/**
* If true, the button toggles the active state with each tap or press
* of the spacebar.
*
* @attribute toggles
* @type boolean
* @default true
*/
toggles: {
type: Boolean,
value: true,
reflectToAttribute: true
}
},
listeners: {
track: '_ontrack'
},
ready: function() {
this._isReady = true;
},
// button-behavior hook
_buttonStateChanged: function() {
if (this.disabled) {
return;
}
if (this._isReady) {
this.checked = this.active;
}
},
_checkedChanged: function(checked) {
this.active = this.checked;
this.fire('iron-change');
},
_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);
}
});
</script>
</dom-module>