www.gusucode.com > 一个基于extjs的强大聊天插件源码程序 > 一个基于extjs的强大聊天插件/extjame/ext-jame/js/ext2/source/widgets/grid/CheckboxSelectionModel.js
/* * Ext JS Library 2.0.2 * Copyright(c) 2006-2008, Ext JS, LLC. * licensing@extjs.com * * http://extjs.com/license */ /** * @class Ext.grid.CheckboxSelectionModel * @extends Ext.grid.RowSelectionModel * A custom selection model that renders a column of checkboxes that can be toggled to select or deselect rows. * @constructor * @param {Object} config The configuration options */ Ext.grid.CheckboxSelectionModel = Ext.extend(Ext.grid.RowSelectionModel, { /** * @cfg {String} header Any valid text or HTML fragment to display in the header cell for the checkbox column * (defaults to '<div class="x-grid3-hd-checker"> </div>'). The default CSS class of 'x-grid3-hd-checker' * displays a checkbox in the header and provides support for automatic check all/none behavior on header click. * This string can be replaced by any valid HTML fragment, including a simple text string (e.g., 'Select Rows'), but * the automatic check all/none behavior will only work if the 'x-grid3-hd-checker' class is supplied. */ header: '<div class="x-grid3-hd-checker"> </div>', /** * @cfg {Number} width The default width in pixels of the checkbox column (defaults to 20). */ width: 20, /** * @cfg {Boolean} sortable True if the checkbox column is sortable (defaults to false). */ sortable: false, // private menuDisabled:true, fixed:true, dataIndex: '', id: 'checker', // private initEvents : function(){ Ext.grid.CheckboxSelectionModel.superclass.initEvents.call(this); this.grid.on('render', function(){ var view = this.grid.getView(); view.mainBody.on('mousedown', this.onMouseDown, this); Ext.fly(view.innerHd).on('mousedown', this.onHdMouseDown, this); }, this); }, // private onMouseDown : function(e, t){ if(e.button === 0 && t.className == 'x-grid3-row-checker'){ // Only fire if left-click e.stopEvent(); var row = e.getTarget('.x-grid3-row'); if(row){ var index = row.rowIndex; if(this.isSelected(index)){ this.deselectRow(index); }else{ this.selectRow(index, true); } } } }, // private onHdMouseDown : function(e, t){ if(t.className == 'x-grid3-hd-checker'){ e.stopEvent(); var hd = Ext.fly(t.parentNode); var isChecked = hd.hasClass('x-grid3-hd-checker-on'); if(isChecked){ hd.removeClass('x-grid3-hd-checker-on'); this.clearSelections(); }else{ hd.addClass('x-grid3-hd-checker-on'); this.selectAll(); } } }, // private renderer : function(v, p, record){ return '<div class="x-grid3-row-checker"> </div>'; } });