/*!
 * Ext JS Library 3.3.0
 * Copyright(c) 2006-2010 Ext JS, Inc.
 * licensing@extjs.com
 * http://www.extjs.com/license
 */
/** * @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 = Ext.extend(Ext.util.Observable, {
/** * The GridPanel for which this SelectionModel is handling selection. Read-only. * @type Object * @property grid */ constructor : function(){ this.locked = false; Ext.grid.AbstractSelectionModel.superclass.constructor.call(this); }, /** @ignore Called by the grid automatically. Do not call directly. */ init : function(grid){ this.grid = grid; if(this.lockOnInit){ delete this.lockOnInit; this.locked = false; this.lock(); } this.initEvents(); },
/** * Locks the selections. */ lock : function(){ if(!this.locked){ this.locked = true; // If the grid has been set, then the view is already initialized. var g = this.grid; if(g){ g.getView().on({ scope: this, beforerefresh: this.sortUnLock, refresh: this.sortLock }); }else{ this.lockOnInit = true; } } }, // set the lock states before and after a view refresh sortLock : function() { this.locked = true; }, // set the lock states before and after a view refresh sortUnLock : function() { this.locked = false; },
/** * Unlocks the selections. */ unlock : function(){ if(this.locked){ this.locked = false; var g = this.grid, gv; // If the grid has been set, then the view is already initialized. if(g){ gv = g.getView(); gv.un('beforerefresh', this.sortUnLock, this); gv.un('refresh', this.sortLock, this); }else{ delete this.lockOnInit; } } },
/** * Returns true if the selections are locked. * @return {Boolean} */ isLocked : function(){ return this.locked; }, destroy: function(){ this.unlock(); this.purgeListeners(); } });