source: Dev/trunk/src/client/dojox/mvc/atBindingExtension.js

define([
        "dojo/aspect",
        "dojo/_base/array",
        "dojo/_base/lang",
        "dijit/_WidgetBase",
        "./_atBindingMixin",
        "dijit/registry"
], function(aspect, array, lang, _WidgetBase, _atBindingMixin){
        return function(/*dijit/_WidgetBase...*/ w){
                // summary:
                //              Monkey-patch the given widget so that they looks at dojox/mvc/at set in them and start data binding specified there.
                // w: dijit/_WidgetBase...
                //              The widget.

                array.forEach(arguments, function(w){
                        if(w.dataBindAttr){
                                console.warn("Detected a widget or a widget class that has already been applied data binding extension. Skipping...");
                                return;
                        }

                        // Apply the at binding mixin
                        lang._mixin(w, _atBindingMixin.mixin);

                        // Monkey patch widget.postscript to get the list of dojox/mvc/at handles before startup
                        aspect.before(w, "postscript", function(/*Object?*/ params, /*DomNode|String*/ srcNodeRef){
                                this._dbpostscript(params, srcNodeRef);
                        });

                        // Monkey patch widget.startup to get data binds set up
                        aspect.before(w, "startup", function(){
                                if(this._started){
                                        return;
                                }
                                this._startAtWatchHandles();
                        });

                        // Monkey patch widget.destroy to remove watches setup in _DataBindingMixin
                        aspect.before(w, "destroy", function(){
                                this._stopAtWatchHandles();
                        });

                        // Monkey patch widget.set to establish data binding if a dojox/mvc/at handle comes
                        aspect.around(w, "set", function(oldWidgetBaseSet){
                                return function(/*String*/ name, /*Anything*/ value){
                                        if(name == _atBindingMixin.prototype.dataBindAttr){
                                                return this._setBind(value);
                                        }else if((value || {}).atsignature == "dojox.mvc.at"){
                                                return this._setAtWatchHandle(name, value);
                                        }
                                        return oldWidgetBaseSet.apply(this, lang._toArray(arguments));
                                };
                        });
                });

                return arguments; // dijit/_WidgetBase...
        };
});