--- /dev/null
+/*
+ * jQuery MultiSelect UI Widget 1.11
+ * Copyright (c) 2011 Eric Hynds
+ *
+ * http://www.erichynds.com/jquery/jquery-ui-multiselect-widget/
+ *
+ * Depends:
+ * - jQuery 1.4.2+
+ * - jQuery UI 1.8 widget factory
+ *
+ * Optional:
+ * - jQuery UI effects
+ * - jQuery UI position utility
+ *
+ * Dual licensed under the MIT and GPL licenses:
+ * http://www.opensource.org/licenses/mit-license.php
+ * http://www.gnu.org/licenses/gpl.html
+ *
+*/
+(function($, undefined){
+
+var multiselectID = 0;
+
+$.widget("ech.multiselect", {
+
+ // default options
+ options: {
+ header: true,
+ height: 175,
+ minWidth: 225,
+ classes: '',
+ checkAllText: 'Check all',
+ uncheckAllText: 'Uncheck all',
+ noneSelectedText: 'Select options',
+ selectedText: '# selected',
+ selectedList: 0,
+ show: '',
+ hide: '',
+ autoOpen: false,
+ multiple: true,
+ position: {}
+ },
+
+ _create: function(){
+ var el = this.element.hide(),
+ o = this.options;
+
+ this.speed = $.fx.speeds._default; // default speed for effects
+ this._isOpen = false; // assume no
+
+ var
+ button = (this.button = $('<button type="button"><span class="ui-icon ui-icon-triangle-2-n-s"></span></button>'))
+ .addClass('ui-multiselect ui-widget ui-state-default ui-corner-all')
+ .addClass( o.classes )
+ .attr({ 'title':el.attr('title'), 'aria-haspopup':true, 'tabIndex':el.attr('tabIndex') })
+ .insertAfter( el ),
+
+ buttonlabel = (this.buttonlabel = $('<span />'))
+ .html( o.noneSelectedText )
+ .appendTo( button ),
+
+ menu = (this.menu = $('<div />'))
+ .addClass('ui-multiselect-menu ui-widget ui-widget-content ui-corner-all')
+ .addClass( o.classes )
+ .insertAfter( button ),
+
+ header = (this.header = $('<div />'))
+ .addClass('ui-widget-header ui-corner-all ui-multiselect-header ui-helper-clearfix')
+ .appendTo( menu ),
+
+ headerLinkContainer = (this.headerLinkContainer = $('<ul />'))
+ .addClass('ui-helper-reset')
+ .html(function(){
+ if( o.header === true ){
+ return '<li><a class="ui-multiselect-all" href="#"><span class="ui-icon ui-icon-check"></span><span>' + o.checkAllText + '</span></a></li><li><a class="ui-multiselect-none" href="#"><span class="ui-icon ui-icon-closethick"></span><span>' + o.uncheckAllText + '</span></a></li>';
+ } else if(typeof o.header === "string"){
+ return '<li>' + o.header + '</li>';
+ } else {
+ return '';
+ }
+ })
+ .append('<li class="ui-multiselect-close"><a href="#" class="ui-multiselect-close"><span class="ui-icon ui-icon-circle-close"></span></a></li>')
+ .appendTo( header ),
+
+ checkboxContainer = (this.checkboxContainer = $('<ul />'))
+ .addClass('ui-multiselect-checkboxes ui-helper-reset')
+ .appendTo( menu );
+
+ // perform event bindings
+ this._bindEvents();
+
+ // build menu
+ this.refresh( true );
+
+ // some addl. logic for single selects
+ if( !o.multiple ){
+ menu.addClass('ui-multiselect-single');
+ }
+ },
+
+ _init: function(){
+ if( this.options.header === false ){
+ this.header.hide();
+ }
+ if( !this.options.multiple ){
+ this.headerLinkContainer.find('.ui-multiselect-all, .ui-multiselect-none').hide();
+ }
+ if( this.options.autoOpen ){
+ this.open();
+ }
+ if( this.element.is(':disabled') ){
+ this.disable();
+ }
+ },
+
+ refresh: function( init ){
+ var el = this.element,
+ o = this.options,
+ menu = this.menu,
+ checkboxContainer = this.checkboxContainer,
+ optgroups = [],
+ html = [],
+ id = el.attr('id') || multiselectID++; // unique ID for the label & option tags
+
+ // build items
+ this.element.find('option').each(function( i ){
+ var $this = $(this),
+ parent = this.parentNode,
+ title = this.innerHTML,
+ description = this.title,
+ value = this.value,
+ inputID = this.id || 'ui-multiselect-'+id+'-option-'+i,
+ isDisabled = this.disabled,
+ isSelected = this.selected,
+ labelClasses = ['ui-corner-all'],
+ optLabel;
+
+ // is this an optgroup?
+ if( parent.tagName.toLowerCase() === 'optgroup' ){
+ optLabel = parent.getAttribute('label');
+
+ // has this optgroup been added already?
+ if( $.inArray(optLabel, optgroups) === -1 ){
+ html.push('<li class="ui-multiselect-optgroup-label"><a href="#">' + optLabel + '</a></li>');
+ optgroups.push( optLabel );
+ }
+ }
+
+ if( isDisabled ){
+ labelClasses.push('ui-state-disabled');
+ }
+
+ // browsers automatically select the first option
+ // by default with single selects
+ if( isSelected && !o.multiple ){
+ labelClasses.push('ui-state-active');
+ }
+
+ html.push('<li class="' + (isDisabled ? 'ui-multiselect-disabled' : '') + '">');
+
+ // create the label
+ html.push('<label for="'+inputID+'" title="'+description+'" class="'+labelClasses.join(' ')+ '">');
+ html.push('<input id="'+inputID+'" name="multiselect_'+id+'" type="'+(o.multiple ? "checkbox" : "radio")+'" value="'+value+'" title="'+title+'"');
+
+ // pre-selected?
+ if( isSelected ){
+ html.push(' checked="checked"');
+ html.push(' aria-selected="true"');
+ }
+
+ // disabled?
+ if( isDisabled ){
+ html.push(' disabled="disabled"');
+ html.push(' aria-disabled="true"');
+ }
+
+ // add the title and close everything off
+ html.push(' /><span>' + title + '</span></label></li>');
+ });
+
+ // insert into the DOM
+ checkboxContainer.html( html.join('') );
+
+ // cache some moar useful elements
+ this.labels = menu.find('label');
+
+ // set widths
+ this._setButtonWidth();
+ this._setMenuWidth();
+
+ // remember default value
+ this.button[0].defaultValue = this.update();
+
+ // broadcast refresh event; useful for widgets
+ if( !init ){
+ this._trigger('refresh');
+ }
+ },
+
+ // updates the button text. call refresh() to rebuild
+ update: function(){
+ var o = this.options,
+ $inputs = this.labels.find('input'),
+ $checked = $inputs.filter(':checked'),
+ numChecked = $checked.length,
+ value;
+
+ if( numChecked === 0 ){
+ value = o.noneSelectedText;
+ } else {
+ if($.isFunction( o.selectedText )){
+ value = o.selectedText.call(this, numChecked, $inputs.length, $checked.get());
+ } else if( /\d/.test(o.selectedList) && o.selectedList > 0 && numChecked <= o.selectedList){
+ value = $checked.map(function(){ return this.title; }).get().join(', ');
+ } else {
+ value = o.selectedText.replace('#', numChecked).replace('#', $inputs.length);
+ }
+ }
+
+ this.buttonlabel.html( value );
+ return value;
+ },
+
+ // binds events
+ _bindEvents: function(){
+ var self = this, button = this.button;
+
+ function clickHandler(){
+ self[ self._isOpen ? 'close' : 'open' ]();
+ return false;
+ }
+
+ // webkit doesn't like it when you click on the span :(
+ button
+ .find('span')
+ .bind('click.multiselect', clickHandler);
+
+ // button events
+ button.bind({
+ click: clickHandler,
+ keypress: function( e ){
+ switch(e.which){
+ case 27: // esc
+ case 38: // up
+ case 37: // left
+ self.close();
+ break;
+ case 39: // right
+ case 40: // down
+ self.open();
+ break;
+ }
+ },
+ mouseenter: function(){
+ if( !button.hasClass('ui-state-disabled') ){
+ $(this).addClass('ui-state-hover');
+ }
+ },
+ mouseleave: function(){
+ $(this).removeClass('ui-state-hover');
+ },
+ focus: function(){
+ if( !button.hasClass('ui-state-disabled') ){
+ $(this).addClass('ui-state-focus');
+ }
+ },
+ blur: function(){
+ $(this).removeClass('ui-state-focus');
+ }
+ });
+
+ // header links
+ this.header
+ .delegate('a', 'click.multiselect', function( e ){
+ // close link
+ if( $(this).hasClass('ui-multiselect-close') ){
+ self.close();
+
+ // check all / uncheck all
+ } else {
+ self[ $(this).hasClass('ui-multiselect-all') ? 'checkAll' : 'uncheckAll' ]();
+ }
+
+ e.preventDefault();
+ });
+
+ // optgroup label toggle support
+ this.menu
+ .delegate('li.ui-multiselect-optgroup-label a', 'click.multiselect', function( e ){
+ e.preventDefault();
+
+ var $this = $(this),
+ $inputs = $this.parent().nextUntil('li.ui-multiselect-optgroup-label').find('input:visible:not(:disabled)'),
+ nodes = $inputs.get(),
+ label = $this.parent().text();
+
+ // trigger event and bail if the return is false
+ if( self._trigger('beforeoptgrouptoggle', e, { inputs:nodes, label:label }) === false ){
+ return;
+ }
+
+ // toggle inputs
+ self._toggleChecked(
+ $inputs.filter(':checked').length !== $inputs.length,
+ $inputs
+ );
+
+ self._trigger('optgrouptoggle', e, {
+ inputs: nodes,
+ label: label,
+ checked: nodes[0].checked
+ });
+ })
+ .delegate('label', 'mouseenter.multiselect', function(){
+ if( !$(this).hasClass('ui-state-disabled') ){
+ self.labels.removeClass('ui-state-hover');
+ $(this).addClass('ui-state-hover').find('input').focus();
+ }
+ })
+ .delegate('label', 'keydown.multiselect', function( e ){
+ e.preventDefault();
+
+ switch(e.which){
+ case 9: // tab
+ case 27: // esc
+ self.close();
+ break;
+ case 38: // up
+ case 40: // down
+ case 37: // left
+ case 39: // right
+ self._traverse(e.which, this);
+ break;
+ case 13: // enter
+ $(this).find('input')[0].click();
+ break;
+ }
+ })
+ .delegate('input[type="checkbox"], input[type="radio"]', 'click.multiselect', function( e ){
+ var $this = $(this),
+ val = this.value,
+ checked = this.checked,
+ tags = self.element.find('option');
+
+ // bail if this input is disabled or the event is cancelled
+ if( this.disabled || self._trigger('click', e, { value:val, text:this.title, checked:checked }) === false ){
+ e.preventDefault();
+ return;
+ }
+
+ // toggle aria state
+ $this.attr('aria-selected', checked);
+
+ // change state on the original option tags
+ tags.each(function(){
+ if( this.value === val ){
+ this.selected = checked;
+ } else if( !self.options.multiple ){
+ this.selected = false;
+ }
+ });
+
+ // some additional single select-specific logic
+ if( !self.options.multiple ){
+ self.labels.removeClass('ui-state-active');
+ $this.closest('label').toggleClass('ui-state-active', checked );
+
+ // close menu
+ self.close();
+ }
+
+ // fire change on the select box
+ self.element.trigger("change");
+
+ // setTimeout is to fix multiselect issue #14 and #47. caused by jQuery issue #3827
+ // http://bugs.jquery.com/ticket/3827
+ setTimeout($.proxy(self.update, self), 10);
+ });
+
+ // close each widget when clicking on any other element/anywhere else on the page
+ $(document).bind('mousedown.multiselect', function( e ){
+ if(self._isOpen && !$.contains(self.menu[0], e.target) && !$.contains(self.button[0], e.target) && e.target !== self.button[0]){
+ self.close();
+ }
+ });
+
+ // deal with form resets. the problem here is that buttons aren't
+ // restored to their defaultValue prop on form reset, and the reset
+ // handler fires before the form is actually reset. delaying it a bit
+ // gives the form inputs time to clear.
+ $(this.element[0].form).bind('reset.multiselect', function(){
+ setTimeout(function(){ self.update(); }, 10);
+ });
+ },
+
+ // set button width
+ _setButtonWidth: function(){
+ var width = this.element.outerWidth(),
+ o = this.options;
+
+ if( /\d/.test(o.minWidth) && width < o.minWidth){
+ width = o.minWidth;
+ }
+
+ // set widths
+ this.button.width( width );
+ },
+
+ // set menu width
+ _setMenuWidth: function(){
+ var m = this.menu,
+ width = this.button.outerWidth()-
+ parseInt(m.css('padding-left'),10)-
+ parseInt(m.css('padding-right'),10)-
+ parseInt(m.css('border-right-width'),10)-
+ parseInt(m.css('border-left-width'),10);
+
+ m.width( width || this.button.outerWidth() );
+ },
+
+ // move up or down within the menu
+ _traverse: function( which, start ){
+ var $start = $(start),
+ moveToLast = which === 38 || which === 37,
+
+ // select the first li that isn't an optgroup label / disabled
+ $next = $start.parent()[moveToLast ? 'prevAll' : 'nextAll']('li:not(.ui-multiselect-disabled, .ui-multiselect-optgroup-label)')[ moveToLast ? 'last' : 'first']();
+
+ // if at the first/last element
+ if( !$next.length ){
+ var $container = this.menu.find('ul:last');
+
+ // move to the first/last
+ this.menu.find('label')[ moveToLast ? 'last' : 'first' ]().trigger('mouseover');
+
+ // set scroll position
+ $container.scrollTop( moveToLast ? $container.height() : 0 );
+
+ } else {
+ $next.find('label').trigger('mouseover');
+ }
+ },
+
+ // This is an internal function to toggle the checked property and
+ // other related attributes of a checkbox.
+ //
+ // The context of this function should be a checkbox; do not proxy it.
+ _toggleCheckbox: function( prop, flag ){
+ return function(){
+ !this.disabled && (this[ prop ] = flag);
+
+ if( flag ){
+ this.setAttribute('aria-selected', true);
+ } else {
+ this.removeAttribute('aria-selected');
+ }
+ }
+ },
+
+ _toggleChecked: function( flag, group ){
+ var $inputs = (group && group.length) ?
+ group :
+ this.labels.find('input'),
+
+ self = this;
+
+ // toggle state on inputs
+ $inputs.each(this._toggleCheckbox('checked', flag));
+
+ // update button text
+ this.update();
+
+ // gather an array of the values that actually changed
+ var values = $inputs.map(function(){
+ return this.value;
+ }).get();
+
+ // toggle state on original option tags
+ this.element
+ .find('option')
+ .each(function(){
+ if( !this.disabled && $.inArray(this.value, values) > -1 ){
+ self._toggleCheckbox('selected', flag).call( this );
+ }
+ });
+
+ // trigger the change event on the select
+ if( $inputs.length ) {
+ this.element.trigger("change");
+ }
+ },
+
+ _toggleDisabled: function( flag ){
+ this.button
+ .attr({ 'disabled':flag, 'aria-disabled':flag })[ flag ? 'addClass' : 'removeClass' ]('ui-state-disabled');
+
+ this.menu
+ .find('input')
+ .attr({ 'disabled':flag, 'aria-disabled':flag })
+ .parent()[ flag ? 'addClass' : 'removeClass' ]('ui-state-disabled');
+
+ this.element
+ .attr({ 'disabled':flag, 'aria-disabled':flag });
+ },
+
+ // open the menu
+ open: function( e ){
+ var self = this,
+ button = this.button,
+ menu = this.menu,
+ speed = this.speed,
+ o = this.options;
+
+ // bail if the multiselectopen event returns false, this widget is disabled, or is already open
+ if( this._trigger('beforeopen') === false || button.hasClass('ui-state-disabled') || this._isOpen ){
+ return;
+ }
+
+ var $container = menu.find('ul:last'),
+ effect = o.show,
+ pos = button.position();
+
+ // figure out opening effects/speeds
+ if( $.isArray(o.show) ){
+ effect = o.show[0];
+ speed = o.show[1] || self.speed;
+ }
+
+ // set the scroll of the checkbox container
+ $container.scrollTop(0).height(o.height);
+
+ // position and show menu
+ if( $.ui.position && !$.isEmptyObject(o.position) ){
+ o.position.of = o.position.of || button;
+
+ menu
+ .show()
+ .position( o.position )
+ .hide()
+ .show( effect, speed );
+
+ // if position utility is not available...
+ } else {
+ menu.css({
+ top: pos.top+button.outerHeight(),
+ left: pos.left
+ }).show( effect, speed );
+ }
+
+ // select the first option
+ // triggering both mouseover and mouseover because 1.4.2+ has a bug where triggering mouseover
+ // will actually trigger mouseenter. the mouseenter trigger is there for when it's eventually fixed
+ this.labels.eq(0).trigger('mouseover').trigger('mouseenter').find('input').trigger('focus');
+
+ button.addClass('ui-state-active');
+ this._isOpen = true;
+ this._trigger('open');
+ },
+
+ // close the menu
+ close: function(){
+ if(this._trigger('beforeclose') === false){
+ return;
+ }
+
+ var o = this.options, effect = o.hide, speed = this.speed;
+
+ // figure out opening effects/speeds
+ if( $.isArray(o.hide) ){
+ effect = o.hide[0];
+ speed = o.hide[1] || this.speed;
+ }
+
+ this.menu.hide(effect, speed);
+ this.button.removeClass('ui-state-active').trigger('blur').trigger('mouseleave');
+ this._isOpen = false;
+ this._trigger('close');
+ },
+
+ enable: function(){
+ this._toggleDisabled(false);
+ },
+
+ disable: function(){
+ this._toggleDisabled(true);
+ },
+
+ checkAll: function( e ){
+ this._toggleChecked(true);
+ this._trigger('checkAll');
+ },
+
+ uncheckAll: function(){
+ this._toggleChecked(false);
+ this._trigger('uncheckAll');
+ },
+
+ getChecked: function(){
+ return this.menu.find('input').filter(':checked');
+ },
+
+ destroy: function(){
+ // remove classes + data
+ $.Widget.prototype.destroy.call( this );
+
+ this.button.remove();
+ this.menu.remove();
+ this.element.show();
+
+ return this;
+ },
+
+ isOpen: function(){
+ return this._isOpen;
+ },
+
+ widget: function(){
+ return this.menu;
+ },
+
+ // react to option changes after initialization
+ _setOption: function( key, value ){
+ var menu = this.menu;
+
+ switch(key){
+ case 'header':
+ menu.find('div.ui-multiselect-header')[ value ? 'show' : 'hide' ]();
+ break;
+ case 'checkAllText':
+ menu.find('a.ui-multiselect-all span').eq(-1).text(value);
+ break;
+ case 'uncheckAllText':
+ menu.find('a.ui-multiselect-none span').eq(-1).text(value);
+ break;
+ case 'height':
+ menu.find('ul:last').height( parseInt(value,10) );
+ break;
+ case 'minWidth':
+ this.options[ key ] = parseInt(value,10);
+ this._setButtonWidth();
+ this._setMenuWidth();
+ break;
+ case 'selectedText':
+ case 'selectedList':
+ case 'noneSelectedText':
+ this.options[key] = value; // these all needs to update immediately for the update() call
+ this.update();
+ break;
+ case 'classes':
+ menu.add(this.button).removeClass(this.options.classes).addClass(value);
+ break;
+ }
+
+ $.Widget.prototype._setOption.apply( this, arguments );
+ }
+});
+
+})(jQuery);
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