/**
+ * @class Ext.CompositeElementLite
+ */
+Ext.apply(Ext.CompositeElementLite.prototype, {
+ addElements : function(els, root){
+ if(!els){
+ return this;
+ }
+ if(typeof els == "string"){
+ els = Ext.Element.selectorFunction(els, root);
+ }
+ var yels = this.elements;
+ Ext.each(els, function(e) {
+ yels.push(Ext.get(e));
+ });
+ return this;
+ },
+
+ /**
+ * Clears this composite and adds the elements returned by the passed selector.
+ * @param {String/Array} els A string CSS selector, an array of elements or an element
+ * @return {CompositeElement} this
+ */
+ fill : function(els){
+ this.elements = [];
+ this.add(els);
+ return this;
+ },
+
+ /**
+ * Returns the first Element
+ * @return {Ext.Element}
+ */
+ first : function(){
+ return this.item(0);
+ },
+
+ /**
+ * Returns the last Element
+ * @return {Ext.Element}
+ */
+ last : function(){
+ return this.item(this.getCount()-1);
+ },
+
+ /**
+ * Returns true if this composite contains the passed element
+ * @param el {Mixed} The id of an element, or an Ext.Element, or an HtmlElement to find within the composite collection.
+ * @return Boolean
+ */
+ contains : function(el){
+ return this.indexOf(el) != -1;
+ },
+
+ /**
+ * Filters this composite to only elements that match the passed selector.
+ * @param {String} selector A string CSS selector
+ * @return {CompositeElement} this
+ */
+ filter : function(selector){
+ var els = [];
+ this.each(function(el){
+ if(el.is(selector)){
+ els[els.length] = el.dom;
+ }
+ });
+ this.fill(els);
+ return this;
+ },
+
+ /**
+ * Removes the specified element(s).
+ * @param {Mixed} el The id of an element, the Element itself, the index of the element in this composite
+ * or an array of any of those.
+ * @param {Boolean} removeDom (optional) True to also remove the element from the document
+ * @return {CompositeElement} this
+ */
+ removeElement : function(keys, removeDom){
+ var me = this,
+ els = this.elements,
+ el;
+ Ext.each(keys, function(val){
+ if ((el = (els[val] || els[val = me.indexOf(val)]))) {
+ if(removeDom){
+ if(el.dom){
+ el.remove();
+ }else{
+ Ext.removeNode(el);
+ }
+ }
+ els.splice(val, 1);
+ }
+ });
+ return this;
+ }
+});
+