fullscreen config from ST2 comes to Ext JS 4 (unofficially)

app.js

Ext.define('Override.AbstractComponent', {
    override : 'Ext.AbstractComponent',

    fullscreen : false,

    constructor : function() {
        var me       = this,
            viewport = Ext.Viewport;

        me.callParent(arguments);

        if (viewport && me.fullscreen && !me.dock) {
           viewport.add(me);
        }
    }
});

Ext.define('Override.app.Application', {
    override : 'Ext.app.Application',

    requires : 'Ext.container.Viewport',

    viewport : null,

    constructor : function() {
        var config   = this.viewport,
            viewport = Ext.Viewport;

        if (config && !(viewport instanceof Ext.container.Viewport)) {
            Ext.Viewport = new Ext.container.Viewport(config);
        }

        this.callParent(arguments);
    }
});

Ext.application({
    name : 'Test',

    requires : [
        'Ext.panel.Panel'
    ],

    viewport : {
        layout : 'card'
    },

    launch : function() {

        new Ext.panel.Panel({
            fullscreen : true,
            frame      : true,
            title      : 'Panel',
            html       : 'hello'
        });

    }
});