/*
 * Ext JS Library 2.0 Copyright(c) 2006-2007, Ext JS, LLC. licensing@extjs.com
 * 
 * http://extjs.com/license
 */

Ext.grid.CheckboxSelectionModel = Ext.extend(Ext.grid.RowSelectionModel, {
			header : "<div class=\"x-grid3-hd-checker\">&#160;</div>",
			width : 20,
			sortable : false,
			fixed : true,
			dataIndex : "",
			id : "checker",
			initEvents : function() {
				Ext.grid.CheckboxSelectionModel.superclass.initEvents
						.call(this);
				this.grid.on("render", function() {
							var A = this.grid.getView();
							A.mainBody.on("mousedown", this.onMouseDown, this);
							Ext.fly(A.innerHd).on("mousedown",
									this.onHdMouseDown, this)
						}, this)
			},
			onMouseDown : function(C, B) {
				if (B.className == "x-grid3-row-checker") {
					C.stopEvent();
					var D = C.getTarget(".x-grid3-row");
					if (D) {
						var A = D.rowIndex;
						if (this.isSelected(A)) {
							this.deselectRow(A)
						} else {
							this.selectRow(A, true)
						}
					}
				}
			},
			onHdMouseDown : function(C, A) {
				if (A.className == "x-grid3-hd-checker") {
					C.stopEvent();
					var B = Ext.fly(A.parentNode);
					var D = B.hasClass("x-grid3-hd-checker-on");
					if (D) {
						B.removeClass("x-grid3-hd-checker-on");
						this.clearSelections()
					} else {
						B.addClass("x-grid3-hd-checker-on");
						this.selectAll()
					}
				}
			},
			renderer : function(B, C, A) {
				return "<div class=\"x-grid3-row-checker\">&#160;</div>"
			}
		});