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/**
* Switchery 0.8.1
* http://abpetkov.github.io/switchery/
*
* Authored by Alexander Petkov
* https://github.com/abpetkov
*
* Copyright 2013-2015, Alexander Petkov
* License: The MIT License (MIT)
* http://opensource.org/licenses/MIT
*
*/
/**
* External dependencies.
*/
var transitionize = require('transitionize')
, fastclick = require('fastclick')
, classes = require('classes')
, events = require('events');
/**
* Expose `Switchery`.
*/
module.exports = Switchery;
/**
* Set Switchery default values.
*
* @api public
*/
var defaults = {
color : '#64bd63'
, secondaryColor : '#dfdfdf'
, jackColor : '#fff'
, jackSecondaryColor: null
, className : 'switchery'
, disabled : false
, disabledOpacity : 0.5
, speed : '0.4s'
, size : 'default'
};
/**
* Create Switchery object.
*
* @param {Object} element
* @param {Object} options
* @api public
*/
function Switchery(element, options) {
if (!(this instanceof Switchery)) return new Switchery(element, options);
this.element = element;
this.options = options || {};
for (var i in defaults) {
if (this.options[i] == null) {
this.options[i] = defaults[i];
}
}
if (this.element != null && this.element.type == 'checkbox') this.init();
if (this.isDisabled() === true) this.disable();
}
/**
* Hide the target element.
*
* @api private
*/
Switchery.prototype.hide = function() {
this.element.style.display = 'none';
};
/**
* Show custom switch after the target element.
*
* @api private
*/
Switchery.prototype.show = function() {
var switcher = this.create();
this.insertAfter(this.element, switcher);
};
/**
* Create custom switch.
*
* @returns {Object} this.switcher
* @api private
*/
Switchery.prototype.create = function() {
this.switcher = document.createElement('span');
this.jack = document.createElement('small');
this.switcher.appendChild(this.jack);
this.switcher.className = this.options.className;
this.events = events(this.switcher, this);
return this.switcher;
};
/**
* Insert after element after another element.
*
* @param {Object} reference
* @param {Object} target
* @api private
*/
Switchery.prototype.insertAfter = function(reference, target) {
reference.parentNode.insertBefore(target, reference.nextSibling);
};
/**
* Set switch jack proper position.
*
* @param {Boolean} clicked - we need this in order to uncheck the input when the switch is clicked
* @api private
*/
Switchery.prototype.setPosition = function (clicked) {
var checked = this.isChecked()
, switcher = this.switcher
, jack = this.jack;
if (clicked && checked) checked = false;
else if (clicked && !checked) checked = true;
if (checked === true) {
this.element.checked = true;
if (window.getComputedStyle) jack.style.left = parseInt(window.getComputedStyle(switcher).width) - parseInt(window.getComputedStyle(jack).width) + 'px';
else jack.style.left = parseInt(switcher.currentStyle['width']) - parseInt(jack.currentStyle['width']) + 'px';
if (this.options.color) this.colorize();
this.setSpeed();
} else {
jack.style.left = 0;
this.element.checked = false;
this.switcher.style.boxShadow = 'inset 0 0 0 0 ' + this.options.secondaryColor;
this.switcher.style.borderColor = this.options.secondaryColor;
this.switcher.style.backgroundColor = (this.options.secondaryColor !== defaults.secondaryColor) ? this.options.secondaryColor : '#fff';
this.jack.style.backgroundColor = (this.options.jackSecondaryColor !== this.options.jackColor) ? this.options.jackSecondaryColor : this.options.jackColor;
this.setSpeed();
}
};
/**
* Set speed.
*
* @api private
*/
Switchery.prototype.setSpeed = function() {
var switcherProp = {}
, jackProp = {
'background-color': this.options.speed
, 'left': this.options.speed.replace(/[a-z]/, '') / 2 + 's'
};
if (this.isChecked()) {
switcherProp = {
'border': this.options.speed
, 'box-shadow': this.options.speed
, 'background-color': this.options.speed.replace(/[a-z]/, '') * 3 + 's'
};
} else {
switcherProp = {
'border': this.options.speed
, 'box-shadow': this.options.speed
};
}
transitionize(this.switcher, switcherProp);
transitionize(this.jack, jackProp);
};
/**
* Set switch size.
*
* @api private
*/
Switchery.prototype.setSize = function() {
var small = 'switchery-small'
, normal = 'switchery-default'
, large = 'switchery-large';
switch (this.options.size) {
case 'small':
classes(this.switcher).add(small)
break;
case 'large':
classes(this.switcher).add(large)
break;
default:
classes(this.switcher).add(normal)
break;
}
};
/**
* Set switch color.
*
* @api private
*/
Switchery.prototype.colorize = function() {
var switcherHeight = this.switcher.offsetHeight / 2;
this.switcher.style.backgroundColor = this.options.color;
this.switcher.style.borderColor = this.options.color;
this.switcher.style.boxShadow = 'inset 0 0 0 ' + switcherHeight + 'px ' + this.options.color;
this.jack.style.backgroundColor = this.options.jackColor;
};
/**
* Handle the onchange event.
*
* @param {Boolean} state
* @api private
*/
Switchery.prototype.handleOnchange = function(state) {
if (document.dispatchEvent) {
var event = document.createEvent('HTMLEvents');
event.initEvent('change', true, true);
this.element.dispatchEvent(event);
} else {
this.element.fireEvent('onchange');
}
};
/**
* Handle the native input element state change.
* A `change` event must be fired in order to detect the change.
*
* @api private
*/
Switchery.prototype.handleChange = function() {
var self = this
, el = this.element;
if (el.addEventListener) {
el.addEventListener('change', function() {
self.setPosition();
});
} else {
el.attachEvent('onchange', function() {
self.setPosition();
});
}
};
/**
* Handle the switch click event.
*
* @api private
*/
Switchery.prototype.handleClick = function() {
var switcher = this.switcher;
fastclick(switcher);
this.events.bind('click', 'bindClick');
};
/**
* Attach all methods that need to happen on switcher click.
*
* @api private
*/
Switchery.prototype.bindClick = function() {
var parent = this.element.parentNode.tagName.toLowerCase()
, labelParent = (parent === 'label') ? false : true;
this.setPosition(labelParent);
this.handleOnchange(this.element.checked);
};
/**
* Mark an individual switch as already handled.
*
* @api private
*/
Switchery.prototype.markAsSwitched = function() {
this.element.setAttribute('data-switchery', true);
};
/**
* Check if an individual switch is already handled.
*
* @api private
*/
Switchery.prototype.markedAsSwitched = function() {
return this.element.getAttribute('data-switchery');
};
/**
* Initialize Switchery.
*
* @api private
*/
Switchery.prototype.init = function() {
this.hide();
this.show();
this.setSize();
this.setPosition();
this.markAsSwitched();
this.handleChange();
this.handleClick();
};
/**
* See if input is checked.
*
* @returns {Boolean}
* @api public
*/
Switchery.prototype.isChecked = function() {
return this.element.checked;
};
/**
* See if switcher should be disabled.
*
* @returns {Boolean}
* @api public
*/
Switchery.prototype.isDisabled = function() {
return this.options.disabled || this.element.disabled || this.element.readOnly;
};
/**
* Destroy all event handlers attached to the switch.
*
* @api public
*/
Switchery.prototype.destroy = function() {
this.events.unbind();
};
/**
* Enable disabled switch element.
*
* @api public
*/
Switchery.prototype.enable = function() {
if (this.options.disabled) this.options.disabled = false;
if (this.element.disabled) this.element.disabled = false;
if (this.element.readOnly) this.element.readOnly = false;
this.switcher.style.opacity = 1;
this.events.bind('click', 'bindClick');
};
/**
* Disable switch element.
*
* @api public
*/
Switchery.prototype.disable = function() {
if (!this.options.disabled) this.options.disabled = true;
if (!this.element.disabled) this.element.disabled = true;
if (!this.element.readOnly) this.element.readOnly = true;
this.switcher.style.opacity = this.options.disabledOpacity;
this.destroy();
};