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+/*!
+ * Ext JS Library 3.4.0
+ * Copyright(c) 2006-2011 Sencha Inc.
+ * licensing@sencha.com
+ * http://www.sencha.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 {Boolean} checkOnly <tt>true</tt> if rows can only be selected by clicking on the
+ * checkbox column (defaults to <tt>false</tt>).
+ */
+ /**
+ * @cfg {String} header Any valid text or HTML fragment to display in the header cell for the
+ * checkbox column. Defaults to:<pre><code>
+ * '<div class="x-grid3-hd-checker">&#160;</div>'</tt>
+ * </code></pre>
+ * The default CSS class of <tt>'x-grid3-hd-checker'</tt> 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.,
+ * <tt>'Select Rows'</tt>), but the automatic check all/none behavior will only work if the
+ * <tt>'x-grid3-hd-checker'</tt> 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 <tt>20</tt>).
+ */
+ width : 20,
+ /**
+ * @cfg {Boolean} sortable <tt>true</tt> if the checkbox column is sortable (defaults to
+ * <tt>false</tt>).
+ */
+ sortable : false,
+
+ // private
+ menuDisabled : true,
+ fixed : true,
+ hideable: false,
+ dataIndex : '',
+ id : 'checker',
+ isColumn: true, // So that ColumnModel doesn't feed this through the Column constructor
+
+ constructor : function(){
+ Ext.grid.CheckboxSelectionModel.superclass.constructor.apply(this, arguments);
+ if(this.checkOnly){
+ this.handleMouseDown = Ext.emptyFn;
+ }
+ },
+
+ // private
+ initEvents : function(){
+ Ext.grid.CheckboxSelectionModel.superclass.initEvents.call(this);
+ this.grid.on('render', function(){
+ Ext.fly(this.grid.getView().innerHd).on('mousedown', this.onHdMouseDown, this);
+ }, this);
+ },
+
+ /**
+ * @private
+ * Process and refire events routed from the GridView's processEvent method.
+ */
+ processEvent : function(name, e, grid, rowIndex, colIndex){
+ if (name == 'mousedown') {
+ this.onMouseDown(e, e.getTarget());
+ return false;
+ } else {
+ return Ext.grid.Column.prototype.processEvent.apply(this, arguments);
+ }
+ },
+
+ // 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);
+ this.grid.getView().focusRow(index);
+ }
+ }
+ }
+ },
+
+ // 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>';
+ },
+
+ onEditorSelect: function(row, lastRow){
+ if(lastRow != row && !this.checkOnly){
+ this.selectRow(row); // *** highlight newly-selected cell and update selection
+ }
+ }
+});
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