extjs4 - Panel inside my panel throwing an error - Cannot call method 'setSize' of undefined -

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extjs4 - Panel inside my panel throwing an error - Cannot call method 'setSize' of undefined -

here panel open:

ext.define("ez.view.usefullinks.panel", { extend: "ext.panel.panel", alias: "widget.usefullinkspanel", layout: "border", border: 0, initcomponent: function() { this.sitepanel = ext.create("ez.view.usefullinks.sitepanel"); this.items = [ this.sitepanel ]; this.callparent(arguments); } });

and here panel causing error:

ext.define("ez.view.usefullinks.sitepanel", { extend: "ext.panel.panel", alias: "widget.usefullinkssitepanel", region: "center", layout: "fit", initcomponent: function() { this.items= [ '<iframe frameborder="0" src="http://www.google.com" width="100%" height="100%">' ] } });

is there wrong here?

i have follow initcomponent syntax. have border layout because more items in code aren't relevant error. thanks.

you cannot pass html straight items array. may seek instead:

ext.define("ez.view.usefullinks.sitepanel", { extend: "ext.panel.panel", alias: "widget.usefullinkssitepanel", region: "center", layout: "fit", listeners: { afterrender: function() { ext.core.domhelper.append(this.getel(), '<iframe frameborder="0" src="http://www.google.com" width="100%" height="100%"></iframe>'); } } });

or

ext.define("ez.view.usefullinks.sitepanel", { extend: "ext.panel.panel", alias: "widget.usefullinkssitepanel", region: "center", layout: "fit", html: '<iframe frameborder="0" src="http://www.google.com" width="100%" height="100%"></iframe>' });

extjs4

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