3 * Copyright(c) 2006-2010 Ext JS, Inc.
5 * http://www.extjs.com/license
8 * @class Ext.list.Sorter
9 * @extends Ext.util.Observable
10 * <p>Supporting Class for Ext.list.ListView</p>
12 * @param {Object} config
14 Ext.list.Sorter = Ext.extend(Ext.util.Observable, {
16 * @cfg {Array} sortClasses
17 * The CSS classes applied to a header when it is sorted. (defaults to <tt>["sort-asc", "sort-desc"]</tt>)
19 sortClasses : ["sort-asc", "sort-desc"],
21 constructor: function(config){
22 Ext.apply(this, config);
23 Ext.list.Sorter.superclass.constructor.call(this);
26 init : function(listView){
28 listView.on('render', this.initEvents, this);
31 initEvents : function(view){
32 view.mon(view.innerHd, 'click', this.onHdClick, this);
33 view.innerHd.setStyle('cursor', 'pointer');
34 view.mon(view.store, 'datachanged', this.updateSortState, this);
35 this.updateSortState.defer(10, this, [view.store]);
38 updateSortState : function(store){
39 var state = store.getSortState();
43 this.sortState = state;
44 var cs = this.view.columns, sortColumn = -1;
45 for(var i = 0, len = cs.length; i < len; i++){
46 if(cs[i].dataIndex == state.field){
52 var sortDir = state.direction;
53 this.updateSortIcon(sortColumn, sortDir);
57 updateSortIcon : function(col, dir){
58 var sc = this.sortClasses;
59 var hds = this.view.innerHd.select('em').removeClass(sc);
60 hds.item(col).addClass(sc[dir == "DESC" ? 1 : 0]);
63 onHdClick : function(e){
64 var hd = e.getTarget('em', 3);
65 if(hd && !this.view.disableHeaders){
66 var index = this.view.findHeaderIndex(hd);
67 this.view.store.sort(this.view.columns[index].dataIndex);
72 // Backwards compatibility alias
73 Ext.ListView.Sorter = Ext.list.Sorter;