Ext.Viewport

Example of a Viewport using a BorderLayout:

new Ext.Viewport({
   layout: 'border',
   items:[{
      region: 'west',
      title: 'Categories',
      // options
   },{
      region: 'center',
      title: 'Content',
      // options
   },{
      region: 'south',
      title: 'South',
      // options
   }]
});