Adding plugins from within a plugin

plugins.js

Ext.define('GridScaffold', {
	extend: 'Ext.AbstractPlugin',
	alias: 'plugin.grid.Scaffold',
	enableDD: false,
	constructor: function(config) {
		var grid = config.cmp;
		grid.items = grid.items || [];
		
		if (config.enableDD) {
			// construct a sub-plugin within another but have call #constructPlugin at this point.
			grid.plugins.push(grid.constructPlugin({
				ptype: 'grid.DD'
			}));
		}
		
		grid.items.push({
			xtype: 'component',
			html: 'grid.Scaffold: <b>enabled</b>'
		});
		this.callParent();
	},
	init: function(grid) {}
});

/**
* @class GridDD plugin
*/
Ext.define('GridDD', {
	extend: 'Ext.AbstractPlugin',
	alias: 'plugin.grid.DD',
	
	constructor: function(config) {
		var grid = config.cmp;
		grid.items = grid.items || [];
		
		grid.items.push({
			xtype: 'component',
			html: 'grid.DD: <b>enabled</b>'
		});
	},
	init: function(grid) {}
});
						
Ext.onReady(function() {
	Ext.create('Ext.panel.Panel', {
		plugins: [{
			ptype: 'grid.Scaffold',
			enableDD: true
		}],
		renderTo: document.body,
		enableDD: true,
		width: 400,
		height: 300,
		title: 'MyGrid'
	});
});