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+
+
+ The source code
+
+
+
+
+ /**
+ * @class Ext.grid.AbstractSelectionModel
+ * @extends Ext.util.Observable
+ * Abstract base class for grid SelectionModels. It provides the interface that should be
+ * implemented by descendant classes. This class should not be directly instantiated.
+ * @constructor
+ */
+Ext.grid.AbstractSelectionModel = function(){
+ this.locked = false;
+ Ext.grid.AbstractSelectionModel.superclass.constructor.call(this);
+};
+
+Ext.extend(Ext.grid.AbstractSelectionModel, Ext.util.Observable, {
+ /**
+ * The GridPanel for which this SelectionModel is handling selection. Read-only.
+ * @type Object
+ * @property grid
+ */
+
+ /** @ignore Called by the grid automatically. Do not call directly. */
+ init : function(grid){
+ this.grid = grid;
+ this.initEvents();
+ },
+
+ /**
+ * Locks the selections.
+ */
+ lock : function(){
+ this.locked = true;
+ },
+
+ /**
+ * Unlocks the selections.
+ */
+ unlock : function(){
+ this.locked = false;
+ },
+
+ /**
+ * Returns true if the selections are locked.
+ * @return {Boolean}
+ */
+ isLocked : function(){
+ return this.locked;
+ },
+
+ destroy: function(){
+ this.purgeListeners();
+ }
+});
+
+
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