1. #1
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    Question Uncaught TypeError: Cannot read property 'containerBox' of null

    Uncaught TypeError: Cannot read property 'containerBox' of null


    Hi

    I have a panel where I need to create a form when the user clicks a button. But when I try to do that, I get the following error in Chrome's console:

    Code:
    Uncaught TypeError: Cannot read property 'containerBox' of null
       Ext.Container.Ext.extend.onFieldFocussencha-touch-debug.js:20996
       fieldEventWrap.focussencha-touch-debug.js:20937
       firesencha-touch-debug.js:979
       Ext.util.Observable.Ext.extend.fireEventsencha-touch-debug.js:595
       Ext.form.Text.Ext.extend.onFocussencha-touch-debug.js:27592
       anonymous:5
       (anonymous function)
    My code is simple:

    Code:
    //[...] Other panel stuff [...]
    
    //When the user click a button:
    contactScreen.add({
    	cls: 'editForm',
    	itemId: 'editForm',
    	xtype: 'formpanel',	
    	items: [{
    		xtype: 'textfield',
    		itemId: 'name',
    		name: 'name',
    		label: 'Name'
    	}]
    });
    
    //[...] Other panel stuff [...]
    If I just add a formpanel to the panel's items array before render everything is fine, unless I specify the hidden attribute of the formpanel. If I then call the show() method at runtime, I once again get the above error.

    I'm mystified, so I would really appreciate some help!
    Last edited by lasseok; 14 Feb 2011 at 12:13 PM. Reason: Clarification

  2. #2
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    Anyone?

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