/* jshint forin:true, noarg:true, noempty:true, eqeqeq:true, boss:true, undef:true, curly:true, browser:true, jquery:true */
/*
 * jQuery MultiSelect UI Widget Filtering Plugin 1.6pre
 * Copyright (c) 2012 Eric Hynds
 *
 * http://www.erichynds.com/jquery/jquery-ui-multiselect-widget/
 *
 * Depends:
 *   - jQuery UI MultiSelect widget
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 *
 */
(function($){var rEscape=/[\-\[\]{}()*+?.,\\\^$|#\s]/g;function debounce(func,wait,immediate){var timeout;return function(){var context=this,args=arguments;var later=function(){timeout=null;if(!immediate){func.apply(context,args)}};var callNow=immediate&&!timeout;clearTimeout(timeout);timeout=setTimeout(later,wait);if(callNow){func.apply(context,args)}}}$.widget("ech.multiselectfilter",{options:{label:"Filter:",width:null,placeholder:"Enter keywords",autoReset:false,debounceMS:250},_create:function(){var opts=this.options;var elem=$(this.element);var instance=this.instance=elem.data("echMultiselect")||elem.data("multiselect")||elem.data("ech-multiselect");var header=this.header=instance.menu.find(".ui-multiselect-header").addClass("ui-multiselect-hasfilter");var wrapper=this.wrapper=$('<div class="ui-multiselect-filter">'+(opts.label.length?opts.label:"")+'<input placeholder="'+opts.placeholder+'" type="search"'+(/\d/.test(opts.width)?'style="width:'+opts.width+'px"':"")+" /></div>").prependTo(this.header);this.inputs=instance.menu.find('input[type="checkbox"], input[type="radio"]');this.input=wrapper.find("input").bind({keydown:function(e){if(e.which===13){e.preventDefault()}},input:$.proxy(debounce(this._handler,opts.debounceMS),this),search:$.proxy(this._handler,this)});this.updateCache();instance._toggleChecked=function(flag,group){var $inputs=group&&group.length?group:this.labels.find("input");var _self=this;var selector=_self._isOpen?":disabled, :hidden":":disabled";$inputs=$inputs.not(selector).each(this._toggleState("checked",flag));this.update();var values={};$inputs.each(function(){values[this.value]=true});this.element.find("option").filter(function(){if(!this.disabled&&values[this.value]){_self._toggleState("selected",flag).call(this)}});if($inputs.length){this.element.trigger("change")}};var doc=$(document).bind("multiselectrefresh."+instance._namespaceID,$.proxy(function(){this.updateCache();this._handler()},this));if(this.options.autoReset){doc.bind("multiselectclose."+instance._namespaceID,$.proxy(this._reset,this))}},_handler:function(e){var term=$.trim(this.input[0].value.toLowerCase()),rows=this.rows,inputs=this.inputs,cache=this.cache;if(!term){rows.show()}else{rows.hide();var regex=new RegExp(term.replace(rEscape,"\\$&"),"gi");this._trigger("filter",e,$.map(cache,function(v,i){if(v.search(regex)!==-1){rows.eq(i).show();return inputs.get(i)}return null}))}this.instance.menu.find(".ui-multiselect-optgroup-label").each(function(){var $this=$(this);var isVisible=$this.nextUntil(".ui-multiselect-optgroup-label").filter(function(){return $.css(this,"display")!=="none"}).length;$this[isVisible?"show":"hide"]()})},_reset:function(){this.input.val("").trigger("keyup")},updateCache:function(){this.rows=this.instance.menu.find(".ui-multiselect-checkboxes li:not(.ui-multiselect-optgroup-label)");this.cache=this.element.children().map(function(){var elem=$(this);if(this.tagName.toLowerCase()==="optgroup"){elem=elem.children()}return elem.map(function(){return this.innerHTML.toLowerCase()}).get()}).get()},widget:function(){return this.wrapper},destroy:function(){$.Widget.prototype.destroy.call(this);this.input.val("").trigger("keyup");this.wrapper.remove()}})})(jQuery);