Commit c3739581 authored by Sven Franck's avatar Sven Franck

added routerjs stateless deferred and requestService callback function

parent 56325b61
......@@ -50,6 +50,10 @@
// validate URL:
// http://bit.ly/2Ol4gj
// deferred explanation:
// http://bit.ly/WH2TRI
// http://bit.ly/zm0Csi
/*jslint indent: 2, maxlen: 80, nomen: true */
/*global window: true, $: true, undefined: true, console: true,
document: true, require: true*/
......@@ -60,6 +64,39 @@
// ================== utility methods ==================
// extend $.deferred to allow multiple calls and resolves
// thx router.js
$.extend({
StatelessDeferred: function () {
var doneList = $.Callbacks("memory"),
promise = {
done: doneList.add,
// Get a promise for this deferred
// If obj is provided, the promise aspect is added to the object
promise: function (obj) {
var i,
keys = ['done', 'promise'];
if (obj === undefined) {
obj = promise;
} else {
for (i = 0; i < keys.length; i += 1) {
obj[keys[i]] = promise[keys[i]];
}
}
return obj;
}
},
deferred = promise.promise({});
deferred.resolveWith = doneList.fireWith;
deferred.resolve = doneList.fire;
// All done!
return deferred;
}
});
// => cross-browser reduce (no support in ie8-, opera 12-)
// http://mzl.la/11tnDy1
if ('function' !== typeof Array.prototype.reduce) {
......@@ -279,6 +316,18 @@
// ================== internal methods ==================
// => keep service callbacks available until a postMessage returns response
priv.trackCallback = function (id, callback, callbackFunction) {
if (priv.callbackTracker === undefined) {
priv.callbackTracker = [];
}
priv.callbackTracker.push({
"id": id,
"callback": callback,
"callbackFunction": callbackFunction
});
};
// => keep track of service requesters to reply to
priv.trackRequest = function (id, respondTo) {
if (priv.serviceTracker === undefined) {
......@@ -287,6 +336,17 @@
priv.serviceTracker.push({"id": id, "respondTo": respondTo});
};
// => retrieve callback for a specific service call
priv.retrieveCallback = function (id) {
var i, callback;
for (i = 0; i < priv.callbackTracker.length; i += 1) {
callback = priv.callbackTracker[i];
if (callback.id = id) {
return [callback.callback, callback.callbackFunction];
}
}
};
// => retrieve window which called a specific service
priv.retrieveCallingWindow = function (id) {
var i, service, callee;
......@@ -456,6 +516,7 @@
break;
case "request":
trackingId = priv.generateUuid();
// track this request, so we know where to send the response
priv.trackRequest(trackingId, event.originalTarget);
// request the service
......@@ -473,23 +534,25 @@
priv.sendServiceReply(event);
break;
case "reply":
priv.returnResult(event.data.result);
priv.returnResult(event);
break;
}
};
// => return the result to the function call
priv.returnResult = function (result) {
// need a way to return this result to the calling function
console.log(result);
return result;
priv.returnResult = function (event) {
var callback = priv.retrieveCallback(event.data.callback);
// resolve the deferred, which includes the requestService callback
callback[0].resolve(event.data.result, callback[1]);
};
// => sends a response message after a service has been run
priv.sendServiceReply = function (event) {
var targetWindow = priv.retrieveCallingWindow(event.data.trackingId);
targetWindow.postMessage({
"type": "reply",
"result": event.data.result
"result": event.data.result,
"callback": event.data.callbackId,
}, window.location.href.split("?")[0]);
};
......@@ -499,7 +562,8 @@
window.top.postMessage({
"type": "result",
"result": result,
"trackingId" : event.data.trackingId
"trackingId" : event.data.trackingId,
"callbackId": event.data.callbackId,
}, window.location.href.split("?")[0]);
};
......@@ -535,10 +599,12 @@
return tgt && tgt.getElementById(o).contentWindow;
}, document);
}
// and request the service
targetWindow.postMessage({
"type": "run",
"trackingId": trackingId,
"callbackId": event.data.callbackId,
"service": event.data.service,
"parameters": event.data.parameters
}, window.location.href);
......@@ -826,11 +892,25 @@
};
// => request a service to be run
that.requestService = $.fn.requestService = function (options) {
that.requestService = $.fn.requestService = function (options, callbackFunction) {
var deferred = new $.StatelessDeferred(),
callbackId = priv.generateUuid(),
callback = deferred;
// store callback to be retrieved by response handler
priv.trackCallback(callbackId, callback, callbackFunction);
// set type
if (options.type === undefined) {
options.type = "request/any";
}
deferred.done(function(result, callbackFunction) {
if (callbackFunction) {
callbackFunction(result);
}
});
options.callbackId = callbackId;
window.top.postMessage(options, window.location.href);
};
......@@ -887,10 +967,8 @@
success: function (data) {
priv.appendGadget(data, options);
},
error: function (error, status, message) {
error: function (error) {
console.log(error);
console.log(status);
console.log(message);
}
});
}
......
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