Enhancement to DeftJS ViewController class to support: (a) controls defined in each class in object class hierarchy; (b) behavior classes (similar to mixins) which are merged into ViewController object.

My.mvc.ViewController.js

Ext.define('My.mvc.ViewController', {
	extend: 'Deft.mvc.ViewController',

    constructor: function () {
    	
    	var me = this;
    	
	    me.control = me.control ? Ext.clone(me.control) : {};
	    
	    me.mergeBehaviors(me);
    	
    	me.mergeParents();

    	return me.callParent(arguments);
    },
    
    mergeControls: function (Class) {
    	
    	var me = this;

		Ext.mergeIf(me.control, Class.control);
    },

    mergeBehavior: function (behaviorName) {

		//
		// First, get behavior class from name.
		//
	    var me = this,
	    	behavior = Ext.ClassManager.get(behaviorName),
	    	prototype;
	    
	    if (!behavior) {
	    	Ext.syncRequire(behaviorName);
	    	behavior = Ext.ClassManager.get(behaviorName);
	    }
	    
	    prototype = behavior.prototype;
	    
	    //
	    // Now, do merge, which involves:
	    //    * merge controls (controller class takes precedence)
	    //    * apply behavior injections
	    //    * merge rest of behavior class (controller class takes precedence)
	    //
    	Ext.mergeIf(me.control, prototype.control);

		if (Ext.isObject(prototype.inject)) {
			Deft.Injector.inject(prototype.inject, me, false);
		}

    	Ext.mergeIf(me, prototype);
    },

    mergeBehaviors: function (Class) {
    	
    	var me = this,
    		behaviors = Class.behaviors,
    		behaviorName;

	    if (behaviors instanceof Array) {
	        for (i = 0,ln = behaviors.length; i < ln; i++) {
	            behaviorName = behaviors[i];
	            me.mergeBehavior(behaviorName);
	        }
	    }
	    else {
	        for (behaviorName in behaviors) {
	            if (behaviors.hasOwnProperty(behaviorName)) {
	            	me.mergeBehavior(behaviorName);
	            }
	        }
	    }
    },
    
    mergeClass: function (Class) {
    	
    	var me = this;
    	
    	me.mergeControls(Class);
    	
    	if (me.behaviors) {
    		me.mergeBehaviors(Class);
    	}
    },

    mergeParents: function () {
    	
    	var me = this,
    		superclass = me.superclass;
    	
    	while (Ext.isObject(superclass) && superclass.$className != arguments.callee.$owner.$className) {

    		me.mergeClass(superclass);

    		superclass = superclass.superclass;
    	}
    }
});