509 righe
14 KiB
JavaScript
509 righe
14 KiB
JavaScript
/*!
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* iCheck v1.0.3, http://git.io/arlzeA
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* ===================================
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* Powerful jQuery and Zepto plugin for checkboxes and radio buttons customization
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*
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* (c) 2013 Damir Sultanov, http://fronteed.com
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* MIT Licensed
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*/
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(function($) {
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// Cached vars
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var _iCheck = 'iCheck',
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_iCheckHelper = _iCheck + '-helper',
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_checkbox = 'checkbox',
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_radio = 'radio',
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_checked = 'checked',
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_unchecked = 'un' + _checked,
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_disabled = 'disabled',
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_determinate = 'determinate',
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_indeterminate = 'in' + _determinate,
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_update = 'update',
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_type = 'type',
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_click = 'click',
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_touch = 'touchbegin.i touchend.i',
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_add = 'addClass',
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_remove = 'removeClass',
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_callback = 'trigger',
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_label = 'label',
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_cursor = 'cursor',
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_mobile = /ip(hone|od|ad)|android|blackberry|windows phone|opera mini|silk/i.test(navigator.userAgent) || (navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1);
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// Plugin init
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$.fn[_iCheck] = function(options, fire) {
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// Walker
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var handle = 'input[type="' + _checkbox + '"], input[type="' + _radio + '"]',
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stack = $(),
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walker = function(object) {
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object.each(function() {
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var self = $(this);
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if (self.is(handle)) {
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stack = stack.add(self);
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} else {
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stack = stack.add(self.find(handle));
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}
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});
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};
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// Check if we should operate with some method
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if (/^(check|uncheck|toggle|indeterminate|determinate|disable|enable|update|destroy)$/i.test(options)) {
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// Normalize method's name
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options = options.toLowerCase();
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// Find checkboxes and radio buttons
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walker(this);
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return stack.each(function() {
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var self = $(this);
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if (options == 'destroy') {
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tidy(self, 'ifDestroyed');
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} else {
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operate(self, true, options);
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}
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// Fire method's callback
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if ($.isFunction(fire)) {
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fire();
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}
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});
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// Customization
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} else if (typeof options == 'object' || !options) {
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// Check if any options were passed
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var settings = $.extend({
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checkedClass: _checked,
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disabledClass: _disabled,
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indeterminateClass: _indeterminate,
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labelHover: true
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}, options),
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selector = settings.handle,
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hoverClass = settings.hoverClass || 'hover',
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focusClass = settings.focusClass || 'focus',
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activeClass = settings.activeClass || 'active',
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labelHover = !!settings.labelHover,
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labelHoverClass = settings.labelHoverClass || 'hover',
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// Setup clickable area
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area = ('' + settings.increaseArea).replace('%', '') | 0;
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// Selector limit
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if (selector == _checkbox || selector == _radio) {
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handle = 'input[type="' + selector + '"]';
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}
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// Clickable area limit
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if (area < -50) {
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area = -50;
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}
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// Walk around the selector
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walker(this);
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return stack.each(function() {
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var self = $(this);
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// If already customized
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tidy(self);
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var node = this,
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id = node.id,
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// Layer styles
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offset = -area + '%',
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size = 100 + (area * 2) + '%',
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layer = {
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position: 'absolute',
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top: offset,
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left: offset,
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display: 'block',
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width: size,
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height: size,
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margin: 0,
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padding: 0,
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background: '#fff',
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border: 0,
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opacity: 0
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},
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// Choose how to hide input
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hide = _mobile ? {
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position: 'absolute',
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visibility: 'hidden'
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} : area ? layer : {
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position: 'absolute',
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opacity: 0
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},
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// Get proper class
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className = node[_type] == _checkbox ? settings.checkboxClass || 'i' + _checkbox : settings.radioClass || 'i' + _radio,
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// Find assigned labels
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label = $(_label + '[for="' + id + '"]').add(self.closest(_label)),
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// Check ARIA option
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aria = !!settings.aria,
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// Set ARIA placeholder
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ariaID = _iCheck + '-' + Math.random().toString(36).substr(2,6),
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// Parent & helper
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parent = '<div class="' + className + '" ' + (aria ? 'role="' + node[_type] + '" ' : ''),
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helper;
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// Set ARIA "labelledby"
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if (aria) {
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label.each(function() {
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parent += 'aria-labelledby="';
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if (this.id) {
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parent += this.id;
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} else {
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this.id = ariaID;
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parent += ariaID;
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}
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parent += '"';
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});
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}
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// Wrap input
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parent = self.wrap(parent + '/>')[_callback]('ifCreated').parent().append(settings.insert);
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// Layer addition
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helper = $('<ins class="' + _iCheckHelper + '"/>').css(layer).appendTo(parent);
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// Finalize customization
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self.data(_iCheck, {o: settings, s: self.attr('style')}).css(hide);
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!!settings.inheritClass && parent[_add](node.className || '');
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!!settings.inheritID && id && parent.attr('id', _iCheck + '-' + id);
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parent.css('position') == 'static' && parent.css('position', 'relative');
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operate(self, true, _update);
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// Label events
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if (label.length) {
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label.on(_click + '.i mouseover.i mouseout.i ' + _touch, function(event) {
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var type = event[_type],
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item = $(this);
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// Do nothing if input is disabled
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if (!node[_disabled]) {
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// Click
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if (type == _click) {
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if ($(event.target).is('a')) {
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return;
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}
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operate(self, false, true);
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// Hover state
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} else if (labelHover) {
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// mouseout|touchend
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if (/ut|nd/.test(type)) {
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parent[_remove](hoverClass);
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item[_remove](labelHoverClass);
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} else {
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parent[_add](hoverClass);
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item[_add](labelHoverClass);
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}
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}
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if (_mobile) {
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event.stopPropagation();
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} else {
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return false;
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}
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}
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});
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}
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// Input events
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self.on(_click + '.i focus.i blur.i keyup.i keydown.i keypress.i', function(event) {
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var type = event[_type],
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key = event.keyCode;
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// Click
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if (type == _click) {
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return false;
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// Keydown
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} else if (type == 'keydown' && key == 32) {
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if (!(node[_type] == _radio && node[_checked])) {
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if (node[_checked]) {
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off(self, _checked);
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} else {
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on(self, _checked);
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}
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}
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return false;
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// Keyup
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} else if (type == 'keyup' && node[_type] == _radio) {
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!node[_checked] && on(self, _checked);
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// Focus/blur
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} else if (/us|ur/.test(type)) {
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parent[type == 'blur' ? _remove : _add](focusClass);
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}
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});
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// Helper events
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helper.on(_click + ' mousedown mouseup mouseover mouseout ' + _touch, function(event) {
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var type = event[_type],
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// mousedown|mouseup
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toggle = /wn|up/.test(type) ? activeClass : hoverClass;
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// Do nothing if input is disabled
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if (!node[_disabled]) {
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// Click
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if (type == _click) {
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operate(self, false, true);
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// Active and hover states
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} else {
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// State is on
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if (/wn|er|in/.test(type)) {
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// mousedown|mouseover|touchbegin
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parent[_add](toggle);
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// State is off
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} else {
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parent[_remove](toggle + ' ' + activeClass);
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}
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// Label hover
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if (label.length && labelHover && toggle == hoverClass) {
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// mouseout|touchend
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label[/ut|nd/.test(type) ? _remove : _add](labelHoverClass);
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}
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}
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if (_mobile) {
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event.stopPropagation();
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} else {
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return false;
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}
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}
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});
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});
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} else {
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return this;
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}
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};
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// Do something with inputs
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function operate(input, direct, method) {
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var node = input[0],
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state = /er/.test(method) ? _indeterminate : /bl/.test(method) ? _disabled : _checked,
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active = method == _update ? {
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checked: node[_checked],
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disabled: node[_disabled],
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indeterminate: input.attr(_indeterminate) == 'true' || input.attr(_determinate) == 'false'
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} : node[state];
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// Check, disable or indeterminate
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if (/^(ch|di|in)/.test(method) && !active) {
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on(input, state);
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// Uncheck, enable or determinate
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} else if (/^(un|en|de)/.test(method) && active) {
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off(input, state);
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// Update
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} else if (method == _update) {
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// Handle states
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for (var each in active) {
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if (active[each]) {
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on(input, each, true);
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} else {
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off(input, each, true);
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}
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}
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} else if (!direct || method == 'toggle') {
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// Helper or label was clicked
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if (!direct) {
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input[_callback]('ifClicked');
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}
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// Toggle checked state
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if (active) {
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if (node[_type] !== _radio) {
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off(input, state);
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}
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} else {
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on(input, state);
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}
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}
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}
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// Add checked, disabled or indeterminate state
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function on(input, state, keep) {
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var node = input[0],
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parent = input.parent(),
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checked = state == _checked,
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indeterminate = state == _indeterminate,
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disabled = state == _disabled,
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callback = indeterminate ? _determinate : checked ? _unchecked : 'enabled',
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regular = option(input, callback + capitalize(node[_type])),
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specific = option(input, state + capitalize(node[_type]));
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// Prevent unnecessary actions
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if (node[state] !== true) {
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// Toggle assigned radio buttons
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if (!keep && state == _checked && node[_type] == _radio && node.name) {
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var form = input.closest('form'),
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inputs = 'input[name="' + node.name + '"]';
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inputs = form.length ? form.find(inputs) : $(inputs);
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inputs.each(function() {
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if (this !== node && $(this).data(_iCheck)) {
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off($(this), state);
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}
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});
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}
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// Indeterminate state
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if (indeterminate) {
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// Add indeterminate state
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node[state] = true;
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// Remove checked state
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if (node[_checked]) {
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off(input, _checked, 'force');
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}
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// Checked or disabled state
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} else {
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// Add checked or disabled state
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if (!keep) {
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node[state] = true;
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}
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// Remove indeterminate state
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if (checked && node[_indeterminate]) {
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off(input, _indeterminate, false);
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}
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}
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// Trigger callbacks
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callbacks(input, checked, state, keep);
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}
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// Add proper cursor
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if (node[_disabled] && !!option(input, _cursor, true)) {
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parent.find('.' + _iCheckHelper).css(_cursor, 'default');
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}
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// Add state class
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parent[_add](specific || option(input, state) || '');
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// Set ARIA attribute
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if (!!parent.attr('role') && !indeterminate) {
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parent.attr('aria-' + (disabled ? _disabled : _checked), 'true');
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}
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// Remove regular state class
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parent[_remove](regular || option(input, callback) || '');
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}
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// Remove checked, disabled or indeterminate state
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function off(input, state, keep) {
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var node = input[0],
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parent = input.parent(),
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checked = state == _checked,
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indeterminate = state == _indeterminate,
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disabled = state == _disabled,
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callback = indeterminate ? _determinate : checked ? _unchecked : 'enabled',
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regular = option(input, callback + capitalize(node[_type])),
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specific = option(input, state + capitalize(node[_type]));
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// Prevent unnecessary actions
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if (node[state] !== false) {
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// Toggle state
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if (indeterminate || !keep || keep == 'force') {
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node[state] = false;
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}
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// Trigger callbacks
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callbacks(input, checked, callback, keep);
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}
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// Add proper cursor
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if (!node[_disabled] && !!option(input, _cursor, true)) {
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parent.find('.' + _iCheckHelper).css(_cursor, 'pointer');
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}
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// Remove state class
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parent[_remove](specific || option(input, state) || '');
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// Set ARIA attribute
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if (!!parent.attr('role') && !indeterminate) {
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parent.attr('aria-' + (disabled ? _disabled : _checked), 'false');
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}
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// Add regular state class
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parent[_add](regular || option(input, callback) || '');
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}
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// Remove all traces
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function tidy(input, callback) {
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if (input.data(_iCheck)) {
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// Remove everything except input
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input.parent().html(input.attr('style', input.data(_iCheck).s || ''));
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// Callback
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if (callback) {
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input[_callback](callback);
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}
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// Unbind events
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input.off('.i').unwrap();
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$(_label + '[for="' + input[0].id + '"]').add(input.closest(_label)).off('.i');
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}
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}
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// Get some option
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function option(input, state, regular) {
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if (input.data(_iCheck)) {
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return input.data(_iCheck).o[state + (regular ? '' : 'Class')];
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}
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}
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// Capitalize some string
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function capitalize(string) {
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return string.charAt(0).toUpperCase() + string.slice(1);
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}
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// Executable handlers
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function callbacks(input, checked, callback, keep) {
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if (!keep) {
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if (checked) {
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input[_callback]('ifToggled');
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}
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input[_callback]('change')[_callback]('ifChanged')[_callback]('if' + capitalize(callback));
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}
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}
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})(window.jQuery || window.Zepto);
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