/*!
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* Ext JS Library 3.1.0
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* Copyright(c) 2006-2009 Ext JS, LLC
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* licensing@extjs.com
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* http://www.extjs.com/license
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*/
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/**
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* @class Ext.list.Sorter
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* @extends Ext.util.Observable
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* <p>Supporting Class for Ext.list.ListView</p>
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* @constructor
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* @param {Object} config
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*/
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Ext.list.Sorter = Ext.extend(Ext.util.Observable, {
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/**
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* @cfg {Array} sortClasses
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* The CSS classes applied to a header when it is sorted. (defaults to <tt>["sort-asc", "sort-desc"]</tt>)
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*/
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sortClasses : ["sort-asc", "sort-desc"],
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constructor: function(config){
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Ext.apply(this, config);
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Ext.list.Sorter.superclass.constructor.call(this);
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},
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init : function(listView){
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this.view = listView;
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listView.on('render', this.initEvents, this);
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},
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initEvents : function(view){
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view.mon(view.innerHd, 'click', this.onHdClick, this);
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view.innerHd.setStyle('cursor', 'pointer');
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view.mon(view.store, 'datachanged', this.updateSortState, this);
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this.updateSortState.defer(10, this, [view.store]);
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},
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updateSortState : function(store){
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var state = store.getSortState();
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if(!state){
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return;
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}
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this.sortState = state;
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var cs = this.view.columns, sortColumn = -1;
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for(var i = 0, len = cs.length; i < len; i++){
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if(cs[i].dataIndex == state.field){
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sortColumn = i;
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break;
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}
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}
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if(sortColumn != -1){
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var sortDir = state.direction;
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this.updateSortIcon(sortColumn, sortDir);
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}
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},
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updateSortIcon : function(col, dir){
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var sc = this.sortClasses;
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var hds = this.view.innerHd.select('em').removeClass(sc);
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hds.item(col).addClass(sc[dir == "DESC" ? 1 : 0]);
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},
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onHdClick : function(e){
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var hd = e.getTarget('em', 3);
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if(hd && !this.view.disableHeaders){
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var index = this.view.findHeaderIndex(hd);
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this.view.store.sort(this.view.columns[index].dataIndex);
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}
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}
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});
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// Backwards compatibility alias
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Ext.ListView.Sorter = Ext.list.Sorter;
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