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(function($){
var msMethods = {
'init' : function(options){
this.settings = {
disabledClass : 'disabled',
emptyArray : false
};
if(options) {
this.settings = $.extend(this.settings, options);
}
var multiSelects = this;
multiSelects.hide();
multiSelects.each(function(){
var ms = $(this);
if (ms.next('.ms-container').length == 0){
ms.attr('id', ms.attr('id') ? ms.attr('id') : 'ms-'+Math.ceil(Math.random()*1000));
var container = $('<div id="ms-'+ms.attr('id')+'" class="ms-container"></div>'),
selectableContainer = $('<div class="ms-selectable"></div>'),
selectedContainer = $('<div class="ms-selection"></div>'),
selectableUl = $('<ul class="ms-list"></ul>'),
selectedUl = $('<ul class="ms-list"></ul>');
if (multiSelects.settings.emptyArray){
if (ms.find("option[value='']").length == 0){
ms.prepend("<option value='' selected='selected'></option>");
} else {
ms.find("option[value='']").attr('selected', 'selected');
}
}
ms.data('settings', multiSelects.settings);
var currentOptgroup = null;
ms.find('optgroup,option').each(function(){
if ($(this).is('optgroup')){
currentOptgroup = $(this).attr('label');
selectableUl.append($('<li class="ms-optgroup-container" id="ms-optgroup-'+
$(this).attr('label')+'"><ul class="ms-optgroup"><li class="ms-optgroup-label">'+
$(this).attr('label')+'</li></ul></li>'));
}
if ($(this).is("option:not(option[value=''])")){
var selectableLi = $('<li class="ms-elem-selectable" ms-value="'+$(this).val()+'">'+$(this).text()+'</li>');
if ($(this).attr('title'))
selectableLi.attr('title', $(this).attr('title'));
if ($(this).attr('disabled') || ms.attr('disabled')){
selectableLi.attr('disabled', 'disabled');
selectableLi.addClass(multiSelects.settings.disabledClass);
}
selectableLi.click(function(){
ms.multiSelect('select', $(this).attr('ms-value'));
});
var container = currentOptgroup ? selectableUl.children('#ms-optgroup-'+currentOptgroup).find('ul').first() : selectableUl;
container.append(selectableLi);
}
});
if (multiSelects.settings.selectableHeader){
selectableContainer.append(multiSelects.settings.selectableHeader);
}
selectableContainer.append(selectableUl);
if (multiSelects.settings.selectedHeader){
selectedContainer.append(multiSelects.settings.selectedHeader);
}
selectedContainer.append(selectedUl);
container.append(selectableContainer);
container.append(selectedContainer);
ms.after(container);
ms.find('option:selected').each(function(){
ms.multiSelect('select', $(this).val(), 'init');
});
}
});
},
'refresh' : function() {
$("#ms-"+$(this).attr("id")).remove();
$(this).multiSelect("init");
},
'select' : function(value, method){
var ms = this,
selectedOption = ms.find('option[value="'+value +'"]'),
text = selectedOption.text(),
titleAttr = selectedOption.attr('title');
var selectedLi = $('<li class="ms-elem-selected" ms-value="'+value+'">'+text+'</li>'),
selectableUl = $('#ms-'+ms.attr('id')+' .ms-selectable ul'),
selectedUl = $('#ms-'+ms.attr('id')+' .ms-selection ul'),
selectableLi = selectableUl.children('li[ms-value="'+value+'"]'),
haveToSelect = !selectableLi.hasClass(ms.data('settings').disabledClass) && value != '' &&
((method == 'init' && selectedOption.attr('selected')) ||
(method != 'init' && !selectedOption.attr('selected')))
if (haveToSelect ){
var parentOptgroup = selectableLi.parent('.ms-optgroup');
if (parentOptgroup.length > 0)
if (parentOptgroup.children('.ms-elem-selectable:not(:hidden)').length == 1)
parentOptgroup.children('.ms-optgroup-label').hide();
selectableLi.hide();
selectedOption.attr('selected', 'selected');
if(titleAttr){
selectedLi.attr('title', titleAttr)
}
selectedLi.click(function(){
ms.multiSelect('deselect', $(this).attr('ms-value'));
});
selectedUl.append(selectedLi);
if (ms.find("option[value='']")){
ms.find("option[value='']").removeAttr('selected');
}
if(method != 'init'){
selectedUl.trigger('change');
selectableUl.trigger('change');
if (typeof ms.data('settings').afterSelect == 'function' && method != 'init') {
ms.data('settings').afterSelect.call(this, value, text);
}
}
}
},
'deselect' : function(value){
var ms = this,
selectedUl = $('#ms-'+ms.attr('id')+' .ms-selection ul'),
selectedOption = ms.find('option[value="'+value +'"]'),
selectedLi = selectedUl.children('li[ms-value="'+value+'"]');
if(selectedLi){
var selectableUl = $('#ms-'+ms.attr('id')+' .ms-selectable ul'),
selectedUl = $('#ms-'+ms.attr('id')+' .ms-selection ul'),
selectableLi = selectableUl.children('li[ms-value="'+value+'"]'),
selectedLi = selectedUl.children('li[ms-value="'+value+'"]');
var parentOptgroup = selectableLi.parent('.ms-optgroup');
if (parentOptgroup.length > 0)
parentOptgroup.children('.ms-optgroup-label').show();
selectedOption.removeAttr('selected');
selectableLi.show();
selectedLi.remove();
if (ms.data('settings').emptyArray && selectedUl.children('li').length == 0){
if (ms.find("option[value='']")){
ms.find("option[value='']").attr('selected', 'selected');
}
}
selectedUl.trigger('change');
selectableUl.trigger('change');
if (typeof ms.data('settings').afterDeselect == 'function') {
ms.data('settings').afterDeselect.call(this, value, selectedLi.text());
}
}
},
'select_all' : function(){
var ms = this;
ms.find("option:not(option[value=''])").each(function(){
ms.multiSelect('select', $(this).val(), 'select_all');
});
},
'deselect_all' : function(){
var ms = this;
ms.find("option:not(option[value=''])").each(function(){
ms.multiSelect('deselect', $(this).val(), 'deselect_all');
});
}
};
$.fn.multiSelect = function(method){
if ( msMethods[method] ) {
return msMethods[method].apply( this, Array.prototype.slice.call( arguments, 1 ));
} else if ( typeof method === 'object' || ! method ) {
return msMethods.init.apply( this, arguments );
} else {
if(console.log) console.log( 'Method ' + method + ' does not exist on jquery.multiSelect' );
}
return false;
};
})(jQuery);
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