/*!
* iCheck v1.0.1, http://git.io/arlzeA
* =================================
* Powerful jQuery and Zepto plugin for checkboxes and radio buttons customization
*
* (c) 2013 Damir Sultanov, http://fronteed.com
* MIT Licensed
*/
(function($) {
// Cached vars
var _iCheck = 'iCheck',
_iCheckHelper = _iCheck + '-helper',
_checkbox = 'checkbox',
_radio = 'radio',
_checked = 'checked',
_unchecked = 'un' + _checked,
_disabled = 'disabled',
_determinate = 'determinate',
_indeterminate = 'in' + _determinate,
_update = 'update',
_type = 'type',
_click = 'click',
_touch = 'touchbegin.i touchend.i',
_add = 'addClass',
_remove = 'removeClass',
_callback = 'trigger',
_label = 'label',
_cursor = 'cursor',
_mobile = /ipad|iphone|ipod|android|blackberry|windows phone|opera mini|silk/i.test(navigator.userAgent);
// Plugin init
$.fn[_iCheck] = function(options, fire) {
// Walker
var handle = 'input[type="' + _checkbox + '"], input[type="' + _radio + '"]',
stack = $(),
walker = function(object) {
object.each(function() {
var self = $(this);
if (self.is(handle)) {
stack = stack.add(self);
} else {
stack = stack.add(self.find(handle));
}
});
};
// Check if we should operate with some method
if (/^(check|uncheck|toggle|indeterminate|determinate|disable|enable|update|destroy)$/i.test(options)) {
// Normalize method's name
options = options.toLowerCase();
// Find checkboxes and radio buttons
walker(this);
return stack.each(function() {
var self = $(this);
if (options == 'destroy') {
tidy(self, 'ifDestroyed');
} else {
operate(self, true, options);
}
// Fire method's callback
if ($.isFunction(fire)) {
fire();
}
});
// Customization
} else if (typeof options == 'object' || !options) {
// Check if any options were passed
var settings = $.extend({
checkedClass: _checked,
disabledClass: _disabled,
indeterminateClass: _indeterminate,
labelHover: true,
aria: false
}, options),
selector = settings.handle,
hoverClass = settings.hoverClass || 'hover',
focusClass = settings.focusClass || 'focus',
activeClass = settings.activeClass || 'active',
labelHover = !!settings.labelHover,
labelHoverClass = settings.labelHoverClass || 'hover',
// Setup clickable area
area = ('' + settings.increaseArea).replace('%', '') | 0;
// Selector limit
if (selector == _checkbox || selector == _radio) {
handle = 'input[type="' + selector + '"]';
}
// Clickable area limit
if (area < -50) {
area = -50;
}
// Walk around the selector
walker(this);
return stack.each(function() {
var self = $(this);
// If already customized
tidy(self);
var node = this,
id = node.id,
// Layer styles
offset = -area + '%',
size = 100 + (area * 2) + '%',
layer = {
position: 'absolute',
top: offset,
left: offset,
display: 'block',
width: size,
height: size,
margin: 0,
padding: 0,
background: '#fff',
border: 0,
opacity: 0
},
// Choose how to hide input
hide = _mobile ? {
position: 'absolute',
visibility: 'hidden'
} : area ? layer : {
position: 'absolute',
opacity: 0
},
// Get proper class
className = node[_type] == _checkbox ? settings.checkboxClass || 'i' + _checkbox : settings.radioClass || 'i' + _radio,
// Find assigned labels
label = $(_label + '[for="' + id + '"]').add(self.closest(_label)),
// Check ARIA option
aria = !!settings.aria,
// Set ARIA placeholder
ariaID = _iCheck + '-' + Math.random().toString(36).replace('0.', ''),
// Parent & helper
parent = '<div class="' + className + '" ' + (aria ? 'role="' + node[_type] + '" ' : ''),
helper;
// Set ARIA "labelledby"
if (label.length && aria) {
label.each(function() {
parent += 'aria-labelledby="';
if (this.id) {
parent += this.id;
} else {
this.id = ariaID;
parent += ariaID;
}
parent += '"';
});
}
// Wrap input
parent = self.wrap(parent + '/>')[_callback]('ifCreated').parent().append(settings.insert);
// Layer addition
helper = $('<ins class="' + _iCheckHelper + '"/>').css(layer).appendTo(parent);
// Finalize customization
self.data(_iCheck, {o: settings, s: self.attr('style')}).css(hide);
!!settings.inheritClass && parent[_add](node.className || '');
!!settings.inheritID && id && parent.attr('id', _iCheck + '-' + id);
parent.css('position') == 'static' && parent.css('position', 'relative');
operate(self, true, _update);
// Label events
if (label.length) {
label.on(_click + '.i mouseover.i mouseout.i ' + _touch, function(event) {
var type = event[_type],
item = $(this);
// Do nothing if input is disabled
if (!node[_disabled]) {
// Click
if (type == _click) {
if ($(event.target).is('a')) {
return;
}
operate(self, false, true);
// Hover state
} else if (labelHover) {
// mouseout|touchend
if (/ut|nd/.test(type)) {
parent[_remove](hoverClass);
item[_remove](labelHoverClass);
} else {
parent[_add](hoverClass);
item[_add](labelHoverClass);
}
}
if (_mobile) {
event.stopPropagation();
} else {
return false;
}
}
});
}
// Input events
self.on(_click + '.i focus.i blur.i keyup.i keydown.i keypress.i', function(event) {
var type = event[_type],
key = event.keyCode;
// Click
if (type == _click) {
return false;
// Keydown
} else if (type == 'keydown' && key == 32) {
if (!(node[_type] == _radio && node[_checked])) {
if (node[_checked]) {
off(self, _checked);
} else {
on(self, _checked);
}
}
return false;
// Keyup
} else if (type == 'keyup' && node[_type] == _radio) {
!node[_checked] && on(self, _checked);
// Focus/blur
} else if (/us|ur/.test(type)) {
parent[type == 'blur' ? _remove : _add](focusClass);
}
});
// Helper events
helper.on(_click + ' mousedown mouseup mouseover mouseout ' + _touch, function(event) {
var type = event[_type],
// mousedown|mouseup
toggle = /wn|up/.test(type) ? activeClass : hoverClass;
// Do nothing if input is disabled
if (!node[_disabled]) {
// Click
if (type == _click) {
operate(self, false, true);
// Active and hover states
} else {
// State is on
if (/wn|er|in/.test(type)) {
// mousedown|mouseover|touchbegin
parent[_add](toggle);
// State is off
} else {
parent[_remove](toggle + ' ' + activeClass);
}
// Label hover
if (label.length && labelHover && toggle == hoverClass) {
// mouseout|touchend
label[/ut|nd/.test(type) ? _remove : _add](labelHoverClass);
}
}
if (_mobile) {
event.stopPropagation();
} else {
return false;
}
}
});
});
} else {
return this;
}
};
// Do something with inputs
function operate(input, direct, method) {
var node = input[0],
state = /er/.test(method) ? _indeterminate : /bl/.test(method) ? _disabled : _checked,
active = method == _update ? {
checked: node[_checked],
disabled: node[_disabled],
indeterminate: input.attr(_indeterminate) == 'true' || input.attr(_determinate) == 'false'
} : node[state];
// Check, disable or indeterminate
if (/^(ch|di|in)/.test(method) && !active) {
on(input, state);
// Uncheck, enable or determinate
} else if (/^(un|en|de)/.test(method) && active) {
off(input, state);
// Update
} else if (method == _update) {
// Handle states
for (var state in active) {
if (active[state]) {
on(input, state, true);
} else {
off(input, state, true);
}
}
} else if (!direct || method == 'toggle') {
// Helper or label was clicked
if (!direct) {
input[_callback]('ifClicked');
}
// Toggle checked state
if (active) {
if (node[_type] !== _radio) {
off(input, state);
}
} else {
on(input, state);
}
}
}
// Add checked, disabled or indeterminate state
function on(input, state, keep) {
var node = input[0],
parent = input.parent(),
checked = state == _checked,
indeterminate = state == _indeterminate,
disabled = state == _disabled,
callback = indeterminate ? _determinate : checked ? _unchecked : 'enabled',
regular = option(input, callback + capitalize(node[_type])),
specific = option(input, state + capitalize(node[_type]));
// Prevent unnecessary actions
if (node[state] !== true) {
// Toggle assigned radio buttons
if (!keep && state == _checked && node[_type] == _radio && node.name) {
var form = input.closest('form'),
inputs = 'input[name="' + node.name + '"]';
inputs = form.length ? form.find(inputs) : $(inputs);
inputs.each(function() {
if (this !== node && $(this).data(_iCheck)) {
off($(this), state);
}
});
}
// Indeterminate state
if (indeterminate) {
// Add indeterminate state
node[state] = true;
// Remove checked state
if (node[_checked]) {
off(input, _checked, 'force');
}
// Checked or disabled state
} else {
// Add checked or disabled state
if (!keep) {
node[state] = true;
}
// Remove indeterminate state
if (checked && node[_indeterminate]) {
off(input, _indeterminate, false);
}
}
// Trigger callbacks
callbacks(input, checked, state, keep);
}
// Add proper cursor
if (node[_disabled] && !!option(input, _cursor, true)) {
parent.find('.' + _iCheckHelper).css(_cursor, 'default');
}
// Add state class
parent[_add](specific || option(input, state) || '');
// Set ARIA attribute
disabled ? parent.attr('aria-disabled', 'true') : parent.attr('aria-checked', indeterminate ? 'mixed' : 'true');
// Remove regular state class
parent[_remove](regular || option(input, callback) || '');
}
// Remove checked, disabled or indeterminate state
function off(input, state, keep) {
var node = input[0],
parent = input.parent(),
checked = state == _checked,
indeterminate = state == _indeterminate,
disabled = state == _disabled,
callback = indeterminate ? _determinate : checked ? _unchecked : 'enabled',
regular = option(input, callback + capitalize(node[_type])),
specific = option(input, state + capitalize(node[_type]));
// Prevent unnecessary actions
if (node[state] !== false) {
// Toggle state
if (indeterminate || !keep || keep == 'force') {
node[state] = false;
}
// Trigger callbacks
callbacks(input, checked, callback, keep);
}
// Add proper cursor
if (!node[_disabled] && !!option(input, _cursor, true)) {
parent.find('.' + _iCheckHelper).css(_cursor, 'pointer');
}
// Remove state class
parent[_remove](specific || option(input, state) || '');
// Set ARIA attribute
disabled ? parent.attr('aria-disabled', 'false') : parent.attr('aria-checked', 'false');
// Add regular state class
parent[_add](regular || option(input, callback) || '');
}
// Remove all traces
function tidy(input, callback) {
if (input.data(_iCheck)) {
// Remove everything except input
input.parent().html(input.attr('style', input.data(_iCheck).s || ''));
// Callback
if (callback) {
input[_callback](callback);
}
// Unbind events
input.off('.i').unwrap();
$(_label + '[for="' + input[0].id + '"]').add(input.closest(_label)).off('.i');
}
}
// Get some option
function option(input, state, regular) {
if (input.data(_iCheck)) {
return input.data(_iCheck).o[state + (regular ? '' : 'Class')];
}
}
// Capitalize some string
function capitalize(string) {
return string.charAt(0).toUpperCase() + string.slice(1);
}
// Executable handlers
function callbacks(input, checked, callback, keep) {
if (!keep) {
if (checked) {
input[_callback]('ifToggled');
}
input[_callback]('ifChanged')[_callback]('if' + capitalize(callback));
}
}
})(window.jQuery || window.Zepto);
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