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(function($){
var msMethods = {
'init' : function(options){
this.settings = {
disabledClass : 'disabled',
standardBehavior : true
};
if(options) {
this.settings = $.extend(this.settings, options);
}
var multiSelects = this;
multiSelects.hide();
multiSelects.each(function(){
var ms = $(this);
ms.attr('id', ms.attr('id') ? ms.attr('id') : 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></ul>'),
selectedUl = $('<ul></ul>');
if (ms.children("option[value='']").length == 0 && multiSelects.settings.standardBehavior == false){
ms.prepend("<option value=''></option>");
}
ms.data('settings', multiSelects.settings);
ms.children("option:not(option[value=''])").each(function(){
var selectableLi = $('<li ms-value="'+$(this).val()+'">'+$(this).text()+'</li>');
if ($(this).prop('title'))
selectableLi.prop('title', $(this).prop('title'));
if ($(this).prop('disabled') || ms.prop('disabled')){
selectableLi.prop('disabled', 'disabled');
selectableLi.addClass(multiSelects.settings.disabledClass)
}
selectableLi.click(function(){
ms.multiSelect('select', $(this).attr('ms-value'));
});
selectableUl.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.children('option:selected').each(function(){
ms.multiSelect('select', $(this).val(), 'init');
});
});
},
'select' : function(value, method){
var ms = this,
msValues = ((ms.val() && ms.val()[0] != '') ? ms.val() : []),
alreadyPresent = $.inArray(value, msValues),
text = ms.find('option[value="'+value+'"]').text(),
titleAttr = ms.find('option[value="'+value+'"]').attr('title');
if(alreadyPresent == -1 || method == 'init'){
var selectedLi = $('<li ms-value="'+value+'">'+text+'</li>').detach(),
newValues = $.merge(msValues, [value]),
selectableUl = $('#ms-'+ms.attr('id')+' .ms-selectable ul'),
selectedUl = $('#ms-'+ms.attr('id')+' .ms-selection ul'),
selectableLi = selectableUl.children('li[ms-value="'+value+'"]');
if (!selectableLi.prop('disabled')){
selectableLi.hide();
ms.val(newValues);
if(titleAttr){
selectedLi.prop('title', titleAttr)
}
selectedLi.click(function(){
ms.multiSelect('deselect', $(this).attr('ms-value'));
});
selectedUl.append(selectedLi);
if (typeof ms.data('settings').afterSelect == 'function' && method != 'init') {
ms.data('settings').afterSelect.call(this, value, text);
}
}
}
},
'deselect' : function(value){
var ms = this,
msValues = (ms.val() ? ms.val() : []),
present = false,
newValues = $.map(msValues, function(e){ if(e != value){ return e; }else{ present = true}});
if(present){
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+'"]');
if (newValues.length == 0 && ms.data('settings').standardBehavior == false){
newValues = [''];
}
ms.val(newValues);
selectableLi.show();
selectedLi.remove();
if (typeof ms.data('settings').afterDeselect == 'function') {
ms.data('settings').afterDeselect.call(this, value, selectedLi.text());
}
}
},
'select_all' : function(){
var ms = this;
ms.children("option:not(option[value=''])").each(function(){
ms.multiSelect('select', $(this).val(), 'select_all');
});
},
'deselect_all' : function(){
var ms = this;
ms.children("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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