/hippo/src/main/webapp/ext/src/widgets/grid/CheckboxSelectionModel.js

  1/*!
  2 * Ext JS Library 3.0.0
  3 * Copyright(c) 2006-2009 Ext JS, LLC
  4 * licensing@extjs.com
  5 * http://www.extjs.com/license
  6 */
  7/**
  8 * @class Ext.grid.CheckboxSelectionModel
  9 * @extends Ext.grid.RowSelectionModel
 10 * A custom selection model that renders a column of checkboxes that can be toggled to select or deselect rows.
 11 * @constructor
 12 * @param {Object} config The configuration options
 13 */
 14Ext.grid.CheckboxSelectionModel = Ext.extend(Ext.grid.RowSelectionModel, {
 15
 16    /**
 17     * @cfg {Boolean} checkOnly <tt>true</tt> if rows can only be selected by clicking on the
 18     * checkbox column (defaults to <tt>false</tt>).
 19     */
 20    /**
 21     * @cfg {String} header Any valid text or HTML fragment to display in the header cell for the
 22     * checkbox column.  Defaults to:<pre><code>
 23     * '&lt;div class="x-grid3-hd-checker">&#38;#160;&lt;/div>'</tt>
 24     * </code></pre>
 25     * The default CSS class of <tt>'x-grid3-hd-checker'</tt> displays a checkbox in the header
 26     * and provides support for automatic check all/none behavior on header click. This string
 27     * can be replaced by any valid HTML fragment, including a simple text string (e.g.,
 28     * <tt>'Select Rows'</tt>), but the automatic check all/none behavior will only work if the
 29     * <tt>'x-grid3-hd-checker'</tt> class is supplied.
 30     */
 31    header: '<div class="x-grid3-hd-checker">&#160;</div>',
 32    /**
 33     * @cfg {Number} width The default width in pixels of the checkbox column (defaults to <tt>20</tt>).
 34     */
 35    width: 20,
 36    /**
 37     * @cfg {Boolean} sortable <tt>true</tt> if the checkbox column is sortable (defaults to
 38     * <tt>false</tt>).
 39     */
 40    sortable: false,
 41
 42    // private
 43    menuDisabled:true,
 44    fixed:true,
 45    dataIndex: '',
 46    id: 'checker',
 47
 48    constructor: function(){
 49        Ext.grid.CheckboxSelectionModel.superclass.constructor.apply(this, arguments);
 50
 51        if(this.checkOnly){
 52            this.handleMouseDown = Ext.emptyFn;
 53        }
 54    },
 55
 56    // private
 57    initEvents : function(){
 58        Ext.grid.CheckboxSelectionModel.superclass.initEvents.call(this);
 59        this.grid.on('render', function(){
 60            var view = this.grid.getView();
 61            view.mainBody.on('mousedown', this.onMouseDown, this);
 62            Ext.fly(view.innerHd).on('mousedown', this.onHdMouseDown, this);
 63
 64        }, this);
 65    },
 66
 67    // private
 68    onMouseDown : function(e, t){
 69        if(e.button === 0 && t.className == 'x-grid3-row-checker'){ // Only fire if left-click
 70            e.stopEvent();
 71            var row = e.getTarget('.x-grid3-row');
 72            if(row){
 73                var index = row.rowIndex;
 74                if(this.isSelected(index)){
 75                    this.deselectRow(index);
 76                }else{
 77                    this.selectRow(index, true);
 78                }
 79            }
 80        }
 81    },
 82
 83    // private
 84    onHdMouseDown : function(e, t){
 85        if(t.className == 'x-grid3-hd-checker'){
 86            e.stopEvent();
 87            var hd = Ext.fly(t.parentNode);
 88            var isChecked = hd.hasClass('x-grid3-hd-checker-on');
 89            if(isChecked){
 90                hd.removeClass('x-grid3-hd-checker-on');
 91                this.clearSelections();
 92            }else{
 93                hd.addClass('x-grid3-hd-checker-on');
 94                this.selectAll();
 95            }
 96        }
 97    },
 98
 99    // private
100    renderer : function(v, p, record){
101        return '<div class="x-grid3-row-checker">&#160;</div>';
102    }
103});