extjs/classic/classic/src/grid/plugin/HeaderReorderer.js

   1 /**
   2  * @private
   3  */
   4 Ext.define('Ext.grid.plugin.HeaderReorderer', {
   5     extend: 'Ext.plugin.Abstract',
   6     requires: ['Ext.grid.header.DragZone', 'Ext.grid.header.DropZone'],
   7     alias: 'plugin.gridheaderreorderer',
   8
   9     init: function(headerCt) {
  10         this.headerCt = headerCt;
  11         headerCt.on({
  12             boxready: this.onHeaderCtRender,
  13             single: true,
  14             scope: this
  15         });
  16     },
  17
  18     destroy: function() {
  19         var me = this;
  20
  21         // The grid may happen to never render
  22         me.headerCt.un('boxready', me.onHeaderCtRender, me);
  23
  24         Ext.destroy(me.dragZone, me.dropZone);
  25         me.headerCt = me.dragZone = me.dropZone = null;
  26
  27         me.callParent();
  28     },
  29
  30     onHeaderCtRender: function() {
  31         var me = this;
  32
  33         me.dragZone = new Ext.grid.header.DragZone(me.headerCt);
  34         me.dropZone = new Ext.grid.header.DropZone(me.headerCt);
  35         if (me.disabled) {
  36             me.dragZone.disable();
  37         }
  38     },
  39
  40     enable: function() {
  41         this.disabled = false;
  42         if (this.dragZone) {
  43             this.dragZone.enable();
  44         }
  45     },
  46
  47     disable: function() {
  48         this.disabled = true;
  49         if (this.dragZone) {
  50             this.dragZone.disable();
  51         }
  52     }
  53 });