cloudeebus/cloudeebus.js

   1 /******************************************************************************
   2  * Copyright 2012 Intel Corporation.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *****************************************************************************/
  16
  17
  18
  19 /*****************************************************************************/
  20
  21 var dbus = { // hook object for dbus types not translated by python-json
  22                 Double: function(value, level) {
  23                         return value;
  24                 }
  25 };
  26
  27
  28
  29 /*****************************************************************************/
  30
  31 var cloudeebus = window.cloudeebus = {
  32                 version: "0.5.1",
  33                 minVersion: "0.3.2"
  34 };
  35
  36 cloudeebus.reset = function() {
  37         cloudeebus.sessionBus = null;
  38         cloudeebus.systemBus = null;
  39         cloudeebus.wampSession = null;
  40         cloudeebus.uri = null;
  41 };
  42
  43
  44 cloudeebus.log = function(msg) {
  45 };
  46
  47 cloudeebus.getError = function(error) {
  48         if (error.desc && error.uri)
  49                 return error.desc + " : " + error.uri;
  50         if (error.desc)
  51                 return error.desc;
  52         if (error.uri)
  53                 return error.uri;
  54         if (error.name && error.message)
  55                 return error.name + " : " + error.message;
  56         if (error.message)
  57                 return error.message;
  58         return error;
  59 };
  60
  61 cloudeebus.versionCheck = function(version) {
  62         var ver = version.split(".");
  63         var min = cloudeebus.minVersion.split(".");
  64         for (var i=0; i<ver.length; i++) {
  65                 if (Number(ver[i]) > Number(min[i]))
  66                         return true;
  67                 if (Number(ver[i]) < Number(min[i]))
  68                         return false;
  69         }
  70         return true;
  71 };
  72
  73
  74 cloudeebus.connect = function(uri, manifest, successCB, errorCB) {
  75         cloudeebus.reset();
  76         cloudeebus.uri = uri;
  77
  78         function onCloudeebusVersionCheckCB(version) {
  79                 if (cloudeebus.versionCheck(version)) {
  80                         cloudeebus.log("Connected to " + cloudeebus.uri);
  81                         if (successCB)
  82                                 successCB();
  83                 } else {
  84                         var errorMsg = "Cloudeebus server version " + version + " unsupported, need version " + cloudeebus.minVersion + " or superior";
  85                         cloudeebus.log(errorMsg);
  86                         if (errorCB)
  87                                 errorCB(errorMsg);
  88                 }
  89         }
  90
  91         function onWAMPSessionAuthErrorCB(error) {
  92                 var errorStr = cloudeebus.getError(error);
  93                 cloudeebus.log("Authentication error: " + errorStr);
  94                 if (errorCB)
  95                         errorCB(errorStr);
  96         }
  97
  98         function onWAMPSessionAuthenticatedCB(permissions) {
  99                 cloudeebus.sessionBus = new cloudeebus.BusConnection("session", cloudeebus.wampSession);
 100                 cloudeebus.systemBus = new cloudeebus.BusConnection("system", cloudeebus.wampSession);
 101                 cloudeebus.wampSession.call("getVersion").then(onCloudeebusVersionCheckCB, errorCB);
 102         }
 103
 104         function onWAMPSessionChallengedCB(challenge) {
 105                 var signature = cloudeebus.wampSession.authsign(challenge, manifest.key);
 106                 cloudeebus.wampSession.auth(signature).then(onWAMPSessionAuthenticatedCB, onWAMPSessionAuthErrorCB);
 107         }
 108
 109         function onWAMPSessionConnectedCB(session) {
 110                 cloudeebus.wampSession = session;
 111                 if (manifest)
 112                         cloudeebus.wampSession.authreq(
 113                                         manifest.name,
 114                                         {permissions: manifest.permissions}
 115                                 ).then(onWAMPSessionChallengedCB, onWAMPSessionAuthErrorCB);
 116                 else
 117                         cloudeebus.wampSession.authreq().then(function() {
 118                                 cloudeebus.wampSession.auth().then(onWAMPSessionAuthenticatedCB, onWAMPSessionAuthErrorCB);
 119                                 }, onWAMPSessionAuthErrorCB);
 120         }
 121
 122         function onWAMPSessionErrorCB(code, reason) {
 123                 if (code == ab.CONNECTION_UNSUPPORTED) {
 124                         cloudeebus.log("Browser is not supported");
 125                 }
 126                 else {
 127                         cloudeebus.log("Failed to open session, code = " + code + ", reason = " + reason);
 128                 }
 129                 if (errorCB)
 130                         errorCB(reason);
 131         }
 132
 133         return ab.connect(cloudeebus.uri, onWAMPSessionConnectedCB, onWAMPSessionErrorCB);
 134 };
 135
 136
 137 cloudeebus.SessionBus = function() {
 138         return cloudeebus.sessionBus;
 139 };
 140
 141
 142 cloudeebus.SystemBus = function() {
 143         return cloudeebus.systemBus;
 144 };
 145
 146
 147
 148 /*****************************************************************************/
 149
 150 cloudeebus.BusConnection = function(name, session) {
 151         this.name = name;
 152         this.wampSession = session;
 153         return this;
 154 };
 155
 156
 157 cloudeebus.BusConnection.prototype.getObject = function(busName, objectPath, introspectCB, errorCB) {
 158         var proxy = new cloudeebus.ProxyObject(this.wampSession, this, busName, objectPath);
 159         if (introspectCB)
 160                 proxy._introspect(introspectCB, errorCB);
 161         return proxy;
 162 };
 163
 164
 165 cloudeebus.BusConnection.prototype.addService = function(serviceName) {
 166         var self = this;
 167
 168         var promise = new cloudeebus.Promise(function (resolver) {
 169           cloudeebusService = new cloudeebus.Service(self.wampSession, self, serviceName);
 170
 171                 function ServiceAddedSuccessCB(serviceName) {
 172                         try { // calling dbus hook object function for un-translated types
 173                                 cloudeebusService.isCreated = true;
 174                                 var result = [ cloudeebusService ];
 175                                 resolver.fulfill(result[0], true);
 176                         }
 177                         catch (e) {
 178                                 var errorStr = cloudeebus.getError(e);
 179                                 cloudeebus.log("Method callback exception: " + errorStr);
 180                                 resolver.reject(errorStr, true);
 181                         }
 182                 }
 183
 184                 function ServiceAddedErrorCB(error) {
 185                         var errorStr = cloudeebus.getError(error);
 186                         cloudeebus.log("Error adding service method: " + self.name + ", error: " + errorStr);
 187                         self.promise.resolver.reject(errorStr, true);
 188                 }
 189
 190                 var arglist = [
 191                     self.name,
 192                     serviceName
 193                     ];
 194
 195                 // call dbusSend with bus type, destination, object, message and arguments
 196                 self.wampSession.call("serviceAdd", arglist).then(ServiceAddedSuccessCB, ServiceAddedErrorCB);
 197         });
 198
 199         return promise;
 200 };
 201
 202 cloudeebus.BusConnection.prototype.removeService = function(serviceName, successCB, errorCB) {
 203         var self = this;
 204
 205         function busServiceRemovedSuccessCB(serviceName) {
 206                 // Be sure we are removing the service requested...
 207                 if (serviceName == self.service.name) {
 208                         self.service = null;
 209                         if (successCB)
 210                                 successCB(serviceName);
 211                 }
 212         }
 213
 214         cloudeebusService.remove(busServiceRemovedSuccessCB, errorCB);
 215 };
 216
 217
 218 /*****************************************************************************/
 219 //Generic definition for an agent. An agent need :
 220 //srvDbusName : the DBus parent service
 221 //objPath : a DBus path to access it
 222 //jsHdl : a Javascript handler to process methods,
 223 //xml : the xml which describe interface/methods/signals...
 224 cloudeebus.Agent = function(srvDbusName, objPath, jsHdl, xml) {
 225         this.srvName = srvDbusName;
 226         this.registered = false;
 227         this.xml = xml;
 228         this.objectPath = objPath;
 229         this.jsHdl = jsHdl;
 230         return this;
 231 };
 232
 233
 234 cloudeebus.Service = function(session, busConnection, name) {
 235         this.wampSession = session;
 236         this.busConnection = busConnection;
 237         this.name = name;
 238         this.isCreated = false;
 239         return this;
 240 };
 241
 242 cloudeebus.Service.prototype.remove = function(successCB, errorCB) {
 243         function ServiceRemovedSuccessCB(serviceName) {
 244                 if (successCB) {
 245                         try {
 246                                 successCB(serviceName);
 247                         }
 248                         catch (e) {
 249                                 alert("Exception removing service " + serviceName + " : " + cloudeebus.getError(e));
 250                         }
 251                 }
 252         }
 253
 254         var arglist = [
 255             this.name
 256             ];
 257
 258         // call dbusSend with bus type, destination, object, message and arguments
 259         this.wampSession.call("serviceRelease", arglist).then(ServiceRemovedSuccessCB, errorCB);
 260 };
 261
 262 cloudeebus.Service.prototype._searchMethod = function(ifName, method, objectJS) {
 263
 264         var funcToCall = null;
 265
 266         // Check if 'objectJS' has a member 'interfaceProxies' with an interface named 'ifName'
 267         // and a method named 'method'
 268         if (objectJS.interfaceProxies && objectJS.interfaceProxies[ifName] &&
 269                 objectJS.interfaceProxies[ifName][method]) {
 270                 funcToCall = objectJS.interfaceProxies[ifName][method];
 271         } else {
 272                 // retrieve the method directly from 'root' of objectJs
 273                 funcToCall = objectJS[method];
 274         }
 275
 276         return funcToCall;
 277 };
 278
 279 cloudeebus.Service.prototype._addMethod = function(ifName, method, agent) {
 280
 281         var service = this;
 282         var methodId = this.name + "#" + agent.objectPath + "#" + ifName + "#" + method;
 283         var funcToCall = this._searchMethod(ifName, method, agent.jsHdl);
 284
 285         if (funcToCall == null)
 286                 cloudeebus.log("Method " + method + " doesn't exist in Javascript object");
 287         else {
 288                 agent.jsHdl.wrapperFunc[method] = function() {
 289                         var result;
 290                         var methodId = arguments[0];
 291                         var callDict = {};
 292                         // affectation of callDict in eval, otherwise dictionary(='{}') interpreted as block of code by eval
 293                         eval("callDict = " + arguments[1]);
 294                         try {
 295                                 result = funcToCall.apply(agent.jsHdl, callDict.args);
 296                                 service._returnMethod(methodId, callDict.callIndex, true, result);
 297                         }
 298                         catch (e) {
 299                                 var errorStr = cloudeebus.getError(e);
 300                                 cloudeebus.log("Method " + ifName + "." + method + " call on " + agent.objectPath + " exception: " + errorStr);
 301                                 service._returnMethod(methodId, callDict.callIndex, false, errorStr);
 302                         }
 303                 };
 304                 agent.jsHdl.methodId[agent.objectPath].push(methodId);
 305                 cloudeebus.log("subscribe " + methodId);
 306                 this.wampSession.subscribe(methodId, agent.jsHdl.wrapperFunc[method]);
 307         }
 308 };
 309
 310 cloudeebus.Service.prototype._addSignal = function(ifName, signal, agent) {
 311         var service = this;
 312         var methodExist = false;
 313
 314         if (agent.jsHdl.interfaceProxies && agent.jsHdl.interfaceProxies[ifName])
 315                 if (agent.jsHdl.interfaceProxies[ifName][signal]) {
 316                         methodExist = true;
 317                 } else {
 318                         agent.jsHdl.interfaceProxies[ifName][signal] = function() {
 319                                 service._emitSignal(agent.objectPath, signal, arguments[0]);
 320                         };
 321                 return;
 322         }
 323
 324         if ((agent.jsHdl[signal] == undefined || agent.jsHdl[signal] == null) && !methodExist)
 325                 agent.jsHdl[signal] = function() {
 326                         service._emitSignal(agent.objectPath, signal, arguments[0]);
 327                 };
 328         else
 329                 cloudeebus.log("Can not create new method to emit signal '" + signal + "' in object JS this method already exist!");
 330 };
 331
 332 cloudeebus.Service.prototype._createWrapper = function(agent) {
 333         var self = this;
 334         var parser = new DOMParser();
 335         var xmlDoc = parser.parseFromString(agent.xml, "text/xml");
 336         var ifXml = xmlDoc.getElementsByTagName("interface");
 337         agent.jsHdl.wrapperFunc = [];
 338         agent.jsHdl.methodId = [];
 339         agent.jsHdl.methodId[agent.objectPath] = [];
 340         for (var i=0; i < ifXml.length; i++) {
 341                 var ifName = ifXml[i].attributes.getNamedItem("name").value;
 342                 var ifChild = ifXml[i].firstChild;
 343                 while (ifChild) {
 344                         if (ifChild.nodeName == "method") {
 345                                 var metName = ifChild.attributes.getNamedItem("name").value;
 346                                 self._addMethod(ifName, metName, agent);
 347                         }
 348                         if (ifChild.nodeName == "signal") {
 349                                 var metName = ifChild.attributes.getNamedItem("name").value;
 350                                 self._addSignal(ifName, metName, agent);
 351                         }
 352                         ifChild = ifChild.nextSibling;
 353                 }
 354         }
 355 };
 356
 357 cloudeebus.Service.prototype.addAgent = function(agent, successCB, errorCB) {
 358         function ServiceAddAgentSuccessCB(objPath) {
 359                 if (successCB) {
 360                         try {
 361                                 successCB(objPath);
 362                         }
 363                         catch (e) {
 364                                 alert("Exception adding agent " + agent.objectPath + " : " + cloudeebus.getError(e));
 365                         }
 366                 }
 367         }
 368
 369         try {
 370                 this._createWrapper(agent);
 371         }
 372         catch (e) {
 373                 var errorStr = cloudeebus.getError(e);
 374                 alert("Exception creating agent wrapper " + agent.objectPath + " : " + errorStr);
 375                 errorCB(errorStr);
 376                 return;
 377         }
 378
 379         var arglist = [
 380             agent.objectPath,
 381             agent.xml
 382             ];
 383
 384         // call dbusSend with bus type, destination, object, message and arguments
 385         this.wampSession.call("serviceAddAgent", arglist).then(ServiceAddAgentSuccessCB, errorCB);
 386 };
 387
 388 cloudeebus.Service.prototype._deleteWrapper = function(agent) {
 389         var objJs = agent.jsHdl;
 390         if (objJs.methodId[agent.objectPath]) {
 391                 for (var idx in objJs.methodId[agent.objectPath]) {
 392                         try {
 393                                 cloudeebus.log("unsubscribe " + objJs.methodId[agent.objectPath][idx]);
 394                                 this.wampSession.unsubscribe(objJs.methodId[agent.objectPath][idx]);
 395                                 objJs.methodId[agent.objectPath][idx] = null;
 396                         }
 397                         catch (e) {
 398                                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 399                         }
 400                 }
 401                 delete objJs.methodId[agent.objectPath];
 402         }
 403 };
 404
 405 cloudeebus.Service.prototype.delAgent = function(rmAgent, successCB, errorCB) {
 406         function ServiceDelAgentSuccessCB(agent) {
 407                 if (successCB) {
 408                         try {
 409                                 successCB(agent);
 410                         }
 411                         catch (e) {
 412                                 var errorStr = cloudeebus.getError(e);
 413                                 alert("Exception deleting agent " + rmAgent.objectPath + " : " + errorStr);
 414                                 errorCB(errorStr);
 415                         }
 416                 }
 417         }
 418
 419         try {
 420                 this._deleteWrapper(rmAgent);
 421         }
 422         catch (e) {
 423                 var errorStr = cloudeebus.getError(e);
 424                 alert("Exception deleting agent wrapper " + rmAgent.objectPath + " : " + errorStr);
 425                 errorCB(errorStr);
 426         }
 427
 428         var arglist = [
 429             rmAgent.objectPath
 430             ];
 431
 432         // call dbusSend with bus type, destination, object, message and arguments
 433         this.wampSession.call("serviceDelAgent", arglist).then(ServiceDelAgentSuccessCB, errorCB);
 434 };
 435
 436 cloudeebus.Service.prototype._returnMethod = function(methodId, callIndex, success, result, successCB, errorCB) {
 437         var arglist = [
 438             methodId,
 439             callIndex,
 440             success,
 441             result
 442             ];
 443
 444         this.wampSession.call("returnMethod", arglist).then(successCB, errorCB);
 445 };
 446
 447 cloudeebus.Service.prototype._emitSignal = function(objectPath, signalName, result, successCB, errorCB) {
 448         var arglist = [
 449             objectPath,
 450             signalName,
 451             result
 452             ];
 453
 454         this.wampSession.call("emitSignal", arglist).then(successCB, errorCB);
 455 };
 456
 457
 458
 459 /*****************************************************************************/
 460
 461 function _processWrappers(wrappers, value) {
 462         for (var i=0; i<wrappers.length; i++)
 463                 wrappers[i](value);
 464 }
 465
 466
 467 function _processWrappersAsync(wrappers, value) {
 468         var taskid = -1;
 469         function processAsyncOnce() {
 470                 _processWrappers(wrappers, value);
 471                 clearInterval(taskid);
 472         }
 473         taskid = setInterval(processAsyncOnce, 200);
 474 }
 475
 476
 477
 478 /*****************************************************************************/
 479
 480 cloudeebus.PromiseResolver = function(promise) {
 481         this.promise = promise;
 482         this.resolved = null;
 483     return this;
 484 };
 485
 486
 487 cloudeebus.PromiseResolver.prototype.resolve = function(value, sync) {
 488         if (this.resolved)
 489                 return;
 490
 491         var then = (value && value.then && value.then.apply) ? value.then : null;
 492         if (then) {
 493                 var self = this;
 494                 var fulfillCallback = function(arg) {
 495                         self.resolve(arg, true);
 496                 };
 497                 var rejectCallback = function(arg) {
 498                         self.reject(arg, true);
 499                 };
 500                 try {
 501                         then.apply(value, [fulfillCallback, rejectCallback]);
 502                 }
 503                 catch (e) {
 504                         this.reject(cloudeebus.getError(e), true);
 505                 }
 506         }
 507
 508         this.fulfill(value, sync);
 509 };
 510
 511
 512 cloudeebus.PromiseResolver.prototype.fulfill = function(value, sync) {
 513         if (this.resolved)
 514                 return;
 515
 516         var promise = this.promise;
 517         promise.state = "fulfilled";
 518         promise.result = value;
 519
 520         this.resolved = true;
 521         if (sync)
 522                 _processWrappers(promise._fulfillWrappers, value);
 523         else
 524                 _processWrappersAsync(promise._fulfillWrappers, value);
 525 };
 526
 527
 528 cloudeebus.PromiseResolver.prototype.reject = function(value, sync) {
 529         if (this.resolved)
 530                 return;
 531
 532         var promise = this.promise;
 533         promise.state = "rejected";
 534         promise.result = value;
 535
 536         this.resolved = true;
 537         if (sync)
 538                 _processWrappers(promise._rejectWrappers, value);
 539         else
 540                 _processWrappersAsync(promise._rejectWrappers, value);
 541 };
 542
 543
 544
 545 /*****************************************************************************/
 546
 547 cloudeebus.Promise = function(init) {
 548         this.state = "pending";
 549         this.result = null;
 550         this._fulfillWrappers = [];
 551         this._rejectWrappers = [];
 552         this.resolver = new cloudeebus.PromiseResolver(this);
 553         if (init) {
 554                 try {
 555                         init.apply(this, [this.resolver]);
 556                 }
 557                 catch (e) {
 558                         this.resolver.reject(cloudeebus.getError(e), true);
 559                 }
 560         }
 561     return this;
 562 };
 563
 564
 565 cloudeebus.Promise.prototype.appendWrappers = function(fulfillWrapper, rejectWrapper) {
 566         if (fulfillWrapper)
 567                 this._fulfillWrappers.push(fulfillWrapper);
 568         if (rejectWrapper)
 569                 this._rejectWrappers.push(rejectWrapper);
 570         if (this.state == "fulfilled")
 571                 _processWrappersAsync(this._fulfillWrappers, this.result);
 572         if (this.state == "rejected")
 573                 _processWrappersAsync(this._rejectWrappers, this.result);
 574 };
 575
 576
 577 cloudeebus.Promise.prototype.then = function(fulfillCB, rejectCB) {
 578         var promise = new cloudeebus.Promise();
 579         var resolver = promise.resolver;
 580         var fulfillWrapper, rejectWrapper;
 581
 582         if (fulfillCB)
 583                 fulfillWrapper = function(arg) {
 584                         try {
 585                                 var value = fulfillCB.apply(promise, [arg]);
 586                                 resolver.resolve(value, true);
 587                         }
 588                         catch (e) {
 589                                 resolver.reject(cloudeebus.getError(e), true);
 590                         }
 591                 };
 592         else
 593                 fulfillWrapper = function(arg) {
 594                         resolver.fulfill(arg, true);
 595                 };
 596
 597         if (rejectCB)
 598                 rejectWrapper = function(arg) {
 599                         try {
 600                                 var value = rejectCB.apply(promise, [arg]);
 601                                 resolver.resolve(value, true);
 602                         }
 603                         catch (e) {
 604                                 resolver.reject(cloudeebus.getError(e), true);
 605                         }
 606                 };
 607         else
 608                 rejectWrapper = function(arg) {
 609                         resolver.reject(arg, true);
 610                 };
 611
 612         this.appendWrappers(fulfillWrapper,rejectWrapper);
 613         return promise;
 614 };
 615
 616
 617 cloudeebus.Promise.prototype["catch"] = function(rejectCB) {
 618         return this.then(undefined,rejectCB);
 619 };
 620
 621
 622 cloudeebus.Promise.prototype.done = function(fulfillCB, rejectCB) {
 623         this.appendWrappers(fulfillCB,rejectCB);
 624 };
 625
 626
 627 cloudeebus.Promise.resolve = function(value) {
 628         var promise = new cloudeebus.Promise();
 629         promise.resolver.resolve(value);
 630         return promise;
 631 };
 632
 633
 634 cloudeebus.Promise.fulfill = function(value) {
 635         var promise = new cloudeebus.Promise();
 636         promise.resolver.fulfill(value);
 637         return promise;
 638 };
 639
 640
 641 cloudeebus.Promise.reject = function(value) {
 642         var promise = new cloudeebus.Promise();
 643         promise.resolver.reject(value);
 644         return promise;
 645 };
 646
 647
 648 cloudeebus.Promise.any = function() {
 649         var promise = new cloudeebus.Promise();
 650         var resolver = promise.resolver;
 651         var fulfillCallback = function(arg) {
 652                 resolver.resolve(arg, true);
 653         };
 654         var rejectCallback = function(arg) {
 655                 resolver.reject(arg, true);
 656         };
 657         if (arguments.length == 0)
 658                 resolver.resolve(undefined, true);
 659         else
 660                 for (i in arguments)
 661                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 662         return promise;
 663 };
 664
 665
 666 cloudeebus.Promise.every = function() {
 667         var promise = new cloudeebus.Promise();
 668         var resolver = promise.resolver;
 669         var index = 0;
 670         var countdown = arguments.length;
 671         var args = new Array(countdown);
 672         var rejectCallback = function(arg) {
 673                 resolver.reject(arg, true);
 674         };
 675         if (arguments.length == 0)
 676                 resolver.resolve(undefined, true);
 677         else
 678                 for (i in arguments) {
 679                         var fulfillCallback = function(arg) {
 680                                 args[index] = arg;
 681                                 countdown--;
 682                                 if (countdown == 0)
 683                                         resolver.resolve(args, true);
 684                         };
 685                         index++;
 686                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 687                 }
 688
 689         return promise;
 690 };
 691
 692
 693 cloudeebus.Promise.some = function() {
 694         var promise = new cloudeebus.Promise();
 695         var resolver = promise.resolver;
 696         var index = 0;
 697         var countdown = arguments.length;
 698         var args = new Array(countdown);
 699         var fulfillCallback = function(arg) {
 700                 resolver.resolve(arg, true);
 701         };
 702         if (arguments.length == 0)
 703                 resolver.resolve(undefined, true);
 704         else
 705                 for (i in arguments) {
 706                         var rejectCallback = function(arg) {
 707                                 args[index] = arg;
 708                                 countdown--;
 709                                 if (countdown == 0)
 710                                         resolver.reject(args, true);
 711                         };
 712                         index++;
 713                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 714                 }
 715
 716         return promise;
 717 };
 718
 719
 720
 721 /*****************************************************************************/
 722
 723 cloudeebus.ProxyObject = function(session, busConnection, busName, objectPath) {
 724         this.wampSession = session;
 725         this.busConnection = busConnection;
 726         this.busName = busName;
 727         this.objectPath = objectPath;
 728         this.interfaceProxies = {};
 729         return this;
 730 };
 731
 732
 733 cloudeebus.ProxyObject.prototype.getInterface = function(ifName) {
 734         return this.interfaceProxies[ifName];
 735 };
 736
 737
 738 cloudeebus.ProxyObject.prototype._introspect = function(successCB, errorCB) {
 739
 740         var self = this;
 741
 742         function getAllPropertiesSuccessCB(props) {
 743                 var ifProxy = self.interfaceProxies[self.propInterfaces[self.propInterfaces.length-1]];
 744                 for (var prop in props)
 745                         ifProxy[prop] = self[prop] = props[prop];
 746                 getAllPropertiesNextInterfaceCB();
 747         }
 748
 749         function getAllPropertiesNextInterfaceCB() {
 750                 self.propInterfaces.pop();
 751                 if (self.propInterfaces.length > 0)
 752                         self.callMethod("org.freedesktop.DBus.Properties",
 753                                 "GetAll",
 754                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 755                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 756                 else {
 757                         self.propInterfaces = null;
 758                         if (successCB)
 759                                 successCB(self);
 760                 }
 761         }
 762
 763         function introspectSuccessCB(str) {
 764                 var parser = new DOMParser();
 765                 var xmlDoc = parser.parseFromString(str, "text/xml");
 766                 var interfaces = xmlDoc.getElementsByTagName("interface");
 767                 self.propInterfaces = [];
 768                 var supportDBusProperties = false;
 769                 for (var i=0; i < interfaces.length; i++) {
 770                         var ifName = interfaces[i].attributes.getNamedItem("name").value;
 771                         self.interfaceProxies[ifName] = new cloudeebus.ProxyObject(self.wampSession, self.busConnection, self.busName, self.objectPath);
 772                         if (ifName == "org.freedesktop.DBus.Properties")
 773                                 supportDBusProperties = true;
 774                         var hasProperties = false;
 775                         var ifChild = interfaces[i].firstChild;
 776                         while (ifChild) {
 777                                 if (ifChild.nodeName == "method") {
 778                                         var nArgs = 0;
 779                                         var signature = "";
 780                                         var metChild = ifChild.firstChild;
 781                                         while (metChild) {
 782                                                 if (metChild.nodeName == "arg" &&
 783                                                         metChild.attributes.getNamedItem("direction").value == "in") {
 784                                                                 signature += metChild.attributes.getNamedItem("type").value;
 785                                                                 nArgs++;
 786                                                 }
 787                                                 metChild = metChild.nextSibling;
 788                                         }
 789                                         var metName = ifChild.attributes.getNamedItem("name").value;
 790                                         if (!self[metName])
 791                                                 self._addMethod(ifName, metName, nArgs, signature);
 792                                         self.interfaceProxies[ifName]._addMethod(ifName, metName, nArgs, signature);
 793                                 }
 794                                 else if (ifChild.nodeName == "property") {
 795                                         if (!hasProperties)
 796                                                 self.propInterfaces.push(ifName);
 797                                         hasProperties = true;
 798                                 }
 799                                 ifChild = ifChild.nextSibling;
 800                         }
 801                 }
 802                 if (supportDBusProperties && self.propInterfaces.length > 0) {
 803                         self.callMethod("org.freedesktop.DBus.Properties",
 804                                 "GetAll",
 805                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 806                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 807                 }
 808                 else {
 809                         self.propInterfaces = null;
 810                         if (successCB)
 811                                 successCB(self);
 812                 }
 813         }
 814
 815         // call Introspect on self
 816         self.callMethod("org.freedesktop.DBus.Introspectable", "Introspect", []).then(introspectSuccessCB, errorCB);
 817 };
 818
 819
 820 cloudeebus.ProxyObject.prototype._addMethod = function(ifName, method, nArgs, signature) {
 821
 822         var self = this;
 823
 824         self[method] = function() {
 825                 var args = [];
 826                 for (var i=0; i < nArgs; i++ )
 827                         args.push(arguments[i]);
 828                 return self.callMethod(ifName, method, args, signature);
 829         };
 830 };
 831
 832
 833 cloudeebus.ProxyObject.prototype.callMethod = function(ifName, method, args, signature) {
 834
 835         var self = this;
 836
 837         var promise = new cloudeebus.Promise(function (resolver) {
 838                 function callMethodSuccessCB(str) {
 839                         try { // calling dbus hook object function for un-translated types
 840                                 var result = eval(str);
 841                                 resolver.fulfill(result[0], true);
 842                         }
 843                         catch (e) {
 844                                 var errorStr = cloudeebus.getError(e);
 845                                 cloudeebus.log("Method callback exception: " + errorStr);
 846                                 resolver.reject(errorStr, true);
 847                         }
 848                 }
 849
 850                 function callMethodErrorCB(error) {
 851                         var errorStr = cloudeebus.getError(error);
 852                         cloudeebus.log("Error calling method: " + method + " on object: " + self.objectPath + " : " + errorStr);
 853                         resolver.reject(errorStr, true);
 854                 }
 855
 856                 var arglist = [
 857                         self.busConnection.name,
 858                         self.busName,
 859                         self.objectPath,
 860                         ifName,
 861                         method,
 862                         JSON.stringify(args)
 863                 ];
 864
 865                 // call dbusSend with bus type, destination, object, message and arguments
 866                 self.wampSession.call("dbusSend", arglist).then(callMethodSuccessCB, callMethodErrorCB);
 867         });
 868
 869         return promise;
 870 };
 871
 872
 873 cloudeebus.ProxyObject.prototype.connectToSignal = function(ifName, signal, handlerCB, errorCB) {
 874
 875         var self = this;
 876
 877         function signalHandler(id, data) {
 878                 if (handlerCB) {
 879                         try { // calling dbus hook object function for un-translated types
 880                                 handlerCB.apply(self, eval(data));
 881                         }
 882                         catch (e) {
 883                                 var errorStr = cloudeebus.getError(e);
 884                                 cloudeebus.log("Signal handler exception: " + errorStr);
 885                                 if (errorCB)
 886                                         errorCB(errorStr);
 887                         }
 888                 }
 889         }
 890
 891         function connectToSignalSuccessCB(str) {
 892                 try {
 893                         self.wampSession.subscribe(str, signalHandler);
 894                 }
 895                 catch (e) {
 896                         cloudeebus.log("Subscribe error: " + cloudeebus.getError(e));
 897                 }
 898         }
 899
 900         function connectToSignalErrorCB(error) {
 901                 var errorStr = cloudeebus.getError(error);
 902                 cloudeebus.log("Error connecting to signal: " + signal + " on object: " + self.objectPath + " : " + errorStr);
 903                 if (errorCB)
 904                         errorCB(cloudeebus.getError(errorStr));
 905         }
 906
 907         var arglist = [
 908                 self.busConnection.name,
 909                 self.busName,
 910                 self.objectPath,
 911                 ifName,
 912                 signal
 913         ];
 914
 915         // call dbusSend with bus type, destination, object, message and arguments
 916         self.wampSession.call("dbusRegister", arglist).then(connectToSignalSuccessCB, connectToSignalErrorCB);
 917 };
 918
 919
 920 cloudeebus.ProxyObject.prototype.disconnectSignal = function(ifName, signal) {
 921         try {
 922                 this.wampSession.unsubscribe(this.busConnection.name + "#" + this.busName + "#" + this.objectPath + "#" + ifName + "#" + signal);
 923         }
 924         catch (e) {
 925                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 926         }
 927 };