docs/source/AbstractSelectionModel.html

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   9     <pre class="prettyprint lang-js">/*!
  10  * Ext JS Library 3.3.1
  11  * Copyright(c) 2006-2010 Sencha Inc.
  12  * licensing@sencha.com
  13  * http://www.sencha.com/license
  14  */
  15 <div id="cls-Ext.grid.AbstractSelectionModel"></div>/**
  16  * @class Ext.grid.AbstractSelectionModel
  17  * @extends Ext.util.Observable
  18  * Abstract base class for grid SelectionModels.  It provides the interface that should be
  19  * implemented by descendant classes.  This class should not be directly instantiated.
  20  * @constructor
  21  */
  22 Ext.grid.AbstractSelectionModel = Ext.extend(Ext.util.Observable,  {
  23     <div id="prop-Ext.grid.AbstractSelectionModel-grid"></div>/**
  24      * The GridPanel for which this SelectionModel is handling selection. Read-only.
  25      * @type Object
  26      * @property grid
  27      */
  28
  29     constructor : function(){
  30         this.locked = false;
  31         Ext.grid.AbstractSelectionModel.superclass.constructor.call(this);
  32     },
  33
  34     /** @ignore Called by the grid automatically. Do not call directly. */
  35     init : function(grid){
  36         this.grid = grid;
  37         if(this.lockOnInit){
  38             delete this.lockOnInit;
  39             this.locked = false;
  40             this.lock();
  41         }
  42         this.initEvents();
  43     },
  44
  45     <div id="method-Ext.grid.AbstractSelectionModel-lock"></div>/**
  46      * Locks the selections.
  47      */
  48     lock : function(){
  49         if(!this.locked){
  50             this.locked = true;
  51             // If the grid has been set, then the view is already initialized.
  52             var g = this.grid;
  53             if(g){
  54                 g.getView().on({
  55                     scope: this,
  56                     beforerefresh: this.sortUnLock,
  57                     refresh: this.sortLock
  58                 });
  59             }else{
  60                 this.lockOnInit = true;
  61             }
  62         }
  63     },
  64
  65     // set the lock states before and after a view refresh
  66     sortLock : function() {
  67         this.locked = true;
  68     },
  69
  70     // set the lock states before and after a view refresh
  71     sortUnLock : function() {
  72         this.locked = false;
  73     },
  74
  75     <div id="method-Ext.grid.AbstractSelectionModel-unlock"></div>/**
  76      * Unlocks the selections.
  77      */
  78     unlock : function(){
  79         if(this.locked){
  80             this.locked = false;
  81             var g = this.grid,
  82                 gv;
  83
  84             // If the grid has been set, then the view is already initialized.
  85             if(g){
  86                 gv = g.getView();
  87                 gv.un('beforerefresh', this.sortUnLock, this);
  88                 gv.un('refresh', this.sortLock, this);
  89             }else{
  90                 delete this.lockOnInit;
  91             }
  92         }
  93     },
  94
  95     <div id="method-Ext.grid.AbstractSelectionModel-isLocked"></div>/**
  96      * Returns true if the selections are locked.
  97      * @return {Boolean}
  98      */
  99     isLocked : function(){
 100         return this.locked;
 101     },
 102
 103     destroy: function(){
 104         this.unlock();
 105         this.purgeListeners();
 106     }
 107 });</pre>
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