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