paper-checkbox.html
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<!--
@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-ripple/paper-ripple.html">
<link rel="import" href="../paper-styles/default-theme.html">
<link rel="import" href="../paper-behaviors/paper-inky-focus-behavior.html">
<!--
`paper-checkbox` is a button that can be either checked or unchecked. User
can tap the checkbox to check or uncheck it. Usually you use checkboxes
to allow user to select multiple options from a set. If you have a single
ON/OFF option, avoid using a single checkbox and use `paper-toggle-button`
instead.
Example:
<paper-checkbox>label</paper-checkbox>
<paper-checkbox checked> label</paper-checkbox>
### Styling
The following custom properties and mixins are available for styling:
Custom property | Description | Default
----------------|-------------|----------
`--paper-checkbox-unchecked-background-color` | Checkbox background color when the input is not checked | `transparent`
`--paper-checkbox-unchecked-color` | Checkbox border color when the input is not checked | `--primary-text-color`
`--paper-checkbox-unchecked-ink-color` | Selected/focus ripple color when the input is not checked | `--primary-text-color`
`--paper-checkbox-checked-color` | Checkbox color when the input is checked | `--default-primary-color`
`--paper-checkbox-checked-ink-color` | Selected/focus ripple color when the input is checked | `--default-primary-color`
`--paper-checkbox-checkmark-color` | Checkmark color | `white`
`--paper-checkbox-label-color` | Label color | `--primary-text-color`
@demo demo/index.html
-->
<dom-module id="paper-checkbox">
<link rel="import" type="css" href="paper-checkbox.css">
<template>
<div id="checkboxContainer">
<paper-ripple id="ink" class="circle" center checked$="[[checked]]"></paper-ripple>
<div id="checkbox" class$="[[_computeCheckboxClass(checked)]]">
<div id="checkmark" class$="[[_computeCheckmarkClass(checked)]]"></div>
</div>
</div>
<div id="checkboxLabel" aria-hidden="true"><content></content></div>
</template>
<script>
Polymer({
is: 'paper-checkbox',
behaviors: [
Polymer.PaperInkyFocusBehavior
],
hostAttributes: {
role: 'checkbox',
'aria-checked': false,
tabindex: 0
},
properties: {
/**
* Fired when the checked state changes due to user interaction.
*
* @event change
*/
/**
* Fired when the checked state changes.
*
* @event iron-change
*/
/**
* Gets or sets the state, `true` is checked and `false` is unchecked.
*/
checked: {
type: Boolean,
value: false,
reflectToAttribute: true,
notify: true,
observer: '_checkedChanged'
},
/**
* If true, the button toggles the active state with each tap or press
* of the spacebar.
*/
toggles: {
type: Boolean,
value: true,
reflectToAttribute: true
}
},
ready: function() {
if (Polymer.dom(this).textContent == '') {
this.$.checkboxLabel.hidden = true;
} else {
this.setAttribute('aria-label', Polymer.dom(this).textContent);
}
this._isReady = true;
},
// button-behavior hook
_buttonStateChanged: function() {
if (this.disabled) {
return;
}
if (this._isReady) {
this.checked = this.active;
}
},
_checkedChanged: function(checked) {
this.setAttribute('aria-checked', this.checked ? 'true' : 'false');
this.active = this.checked;
this.fire('iron-change');
},
_computeCheckboxClass: function(checked) {
if (checked) {
return 'checked';
}
return '';
},
_computeCheckmarkClass: function(checked) {
if (!checked) {
return 'hidden';
}
return '';
}
})
</script>
</dom-module>