Pfthb

In my extjs6 project I have a contextmenu button that I launch a modal popup window with a grid inside. I tried to create it so it only creates the component once, and that window isn't created everytime I click the contextmenu item but I am doing something wrong.

It works the first time, but when I click it the second time I get an error
CANNOT READ PROPERTY 'viewModel' of null.

Can someone see what I am doing wrong?

the error appears when I get to this.tempWindow.show()

VIEW, window is popup window, grid is where the itemcontext menu is located

Ext.define('Window2', 
extend: 'Ext.window.Window',
xtype: 'window2',
title: 'Market Breakdown',
width: 600,
height: 600,
modal: true,
controller: 'portalRealtime-portalRealtime',
viewModel: 
 type: 'portalRealtimeVM'
,
items: [
 xtype: 'grid',
 title: 'hello',
 width: 200,
 height: 200
]
);

 xtype: 'grid',
 title: 'Details',
 itemId: 'detailsGridID',
 bind: 
 store: 'myDetailsStore'
 , 
 flex: 3,
 margin: '5px 0px 0px 0px',
 ui: 'featuredpanel-framed',
 cls: 'custom-grid',
 height: '100%',
 collapsible: true,
 collapseDirection: 'left',
 listeners: 
 itemcontextmenu: 'showContextMenuDetails'
 ,

CONTROLLER

 showContextMenuDetails: function (view, rec, node, index, e) 
 e.stopEvent();
 this.getContextMenuDetails(rec).show().setPagePosition(e.getXY());
 return false;
,

getContextMenuDetails: function (rec) 
 if (!this.contextMenu) 
 this.contextMenu = this.getView().add(
 xtype: 'contextMenuMarketDrilldownAccount',
 currentRecord: rec
 );
 
 return this.contextMenu;
,

onContextButtonMarketDrilldown: function (item, e) 

 var menu = item.up('menu');
 var rec = menu.currentRecord;
 var bbSymbol = rec.get('BBSymbol');

 debugger;
 if (!this.tempWindow) 
 this.tempWindow = this.getView().add(
 xtype: 'window2',
 );
 
 this.tempWindow.show();
,

Try put viewModel and controler atributes properly configured with your controller and viewModel.

Ext.define('Window2', 
 extend: 'Ext.window.Window',
 xtype: 'window2',
 title: 'Market Breakdown',
 width: 600,
 height: 600,
 modal: true,
 viewModel: 
 type: 'Window2' //Yout window viewModel
 ,
 controller: 'Window2', //Your window controller,
 items: [
 xtype: 'grid',
 title: 'hello',
 width: 200,
 height: 200
 ]
);