source: Dev/trunk/src/client/dojox/io/xhrWindowNamePlugin.js

define([
        "dojo/_base/kernel",
        "dojo/_base/json",
        "dojo/_base/xhr",
        "dojox/io/xhrPlugins",
        "dojox/io/windowName",
        "dojox/io/httpParse",
        "dojox/secure/capability"
], function(dojo, json, xhr, xhrPlugins, windowName, httpParse, capability){
dojo.getObject("io.xhrWindowNamePlugin", true, dojox);

dojox.io.xhrWindowNamePlugin = function(/*String*/url, /*Function?*/httpAdapter, /*Boolean?*/trusted){
        // summary:
        //              Adds the windowName transport as an XHR plugin for the given site. See
        //              dojox.io.windowName for more information on the transport.
        // url:
        //              Url prefix of the site which can handle windowName requests.
        // httpAdapter:
        //              This allows for adapting HTTP requests that could not otherwise be
        //              sent with window.name, so you can use a convention for headers and PUT/DELETE methods.
        xhrPlugins.register(
                "windowName",
                function(method,args){
                         return args.sync !== true &&
                                (method == "GET" || method == "POST" || httpAdapter) &&
                                (args.url.substring(0,url.length) == url);
                },
                function(method,args,hasBody){
                        var send = windowName.send;
                        var load = args.load;
                        args.load = undefined; //we don't want send to set this callback
                        var dfd = (httpAdapter ? httpAdapter(send, true) : send)(method, args, hasBody); // use the windowName transport
                        dfd.addCallback(function(result){
                                var ioArgs = dfd.ioArgs;
                                ioArgs.xhr = {
                                        getResponseHeader: function(name){
                                                // convert the hash to an object to act like response headers
                                                return dojo.queryToObject(ioArgs.hash.match(/[^#]*$/)[0])[name];
                                        }
                                };
                                // use the XHR content handlers for handling
                                if(ioArgs.handleAs == 'json'){
                                        // use a secure json verifier, using object capability validator for now
                                        if(!trusted){
                                                capability.validate(result,["Date"],{});
                                        }
                                        return dojo.fromJson(result);
                                }
                                return dojo._contentHandlers[ioArgs.handleAs || "text"]({responseText:result});
                        });
                        args.load = load;
                        if(load){
                                dfd.addCallback(load);
                        }
                        return dfd;
                }
        );
};

return dojox.io.xhrWindowNamePlugin;
});