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: "0.5.0",
  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
  48 cloudeebus.versionCheck = function(version) {
  49         var ver = version.split(".");
  50         var min = cloudeebus.minVersion.split(".");
  51         for (var i=0; i<ver.length; i++) {
  52                 if (Number(ver[i]) > Number(min[i]))
  53                         return true;
  54                 if (Number(ver[i]) < Number(min[i]))
  55                         return false;
  56         }
  57         return true;
  58 };
  59
  60
  61 cloudeebus.connect = function(uri, manifest, successCB, errorCB) {
  62         cloudeebus.reset();
  63         cloudeebus.uri = uri;
  64
  65         function onCloudeebusVersionCheckCB(version) {
  66                 if (cloudeebus.versionCheck(version)) {
  67                         cloudeebus.log("Connected to " + cloudeebus.uri);
  68                         if (successCB)
  69                                 successCB();
  70                 } else {
  71                         var errorMsg = "Cloudeebus server version " + version + " unsupported, need version " + cloudeebus.minVersion + " or superior";
  72                         cloudeebus.log(errorMsg);
  73                         if (errorCB)
  74                                 errorCB(errorMsg);
  75                 }
  76         }
  77
  78         function onWAMPSessionAuthErrorCB(error) {
  79                 cloudeebus.log("Authentication error: " + error.desc);
  80                 if (errorCB)
  81                         errorCB(error.desc);
  82         }
  83
  84         function onWAMPSessionAuthenticatedCB(permissions) {
  85                 cloudeebus.sessionBus = new cloudeebus.BusConnection("session", cloudeebus.wampSession);
  86                 cloudeebus.systemBus = new cloudeebus.BusConnection("system", cloudeebus.wampSession);
  87                 cloudeebus.wampSession.call("getVersion").then(onCloudeebusVersionCheckCB, errorCB);
  88         }
  89
  90         function onWAMPSessionChallengedCB(challenge) {
  91                 var signature = cloudeebus.wampSession.authsign(challenge, manifest.key);
  92                 cloudeebus.wampSession.auth(signature).then(onWAMPSessionAuthenticatedCB, onWAMPSessionAuthErrorCB);
  93         }
  94
  95         function onWAMPSessionConnectedCB(session) {
  96                 cloudeebus.wampSession = session;
  97                 if (manifest)
  98                         cloudeebus.wampSession.authreq(
  99                                         manifest.name,
 100                                         {permissions: manifest.permissions}
 101                                 ).then(onWAMPSessionChallengedCB, onWAMPSessionAuthErrorCB);
 102                 else
 103                         cloudeebus.wampSession.authreq().then(function() {
 104                                 cloudeebus.wampSession.auth().then(onWAMPSessionAuthenticatedCB, onWAMPSessionAuthErrorCB);
 105                                 }, onWAMPSessionAuthErrorCB);
 106         }
 107
 108         function onWAMPSessionErrorCB(code, reason) {
 109                 if (code == ab.CONNECTION_UNSUPPORTED) {
 110                         cloudeebus.log("Browser is not supported");
 111                 }
 112                 else {
 113                         cloudeebus.log("Failed to open session, code = " + code + ", reason = " + reason);
 114                 }
 115                 if (errorCB)
 116                         errorCB(reason);
 117         }
 118
 119         return ab.connect(cloudeebus.uri, onWAMPSessionConnectedCB, onWAMPSessionErrorCB);
 120 };
 121
 122
 123 cloudeebus.SessionBus = function() {
 124         return cloudeebus.sessionBus;
 125 };
 126
 127
 128 cloudeebus.SystemBus = function() {
 129         return cloudeebus.systemBus;
 130 };
 131
 132
 133
 134 /*****************************************************************************/
 135
 136 cloudeebus.BusConnection = function(name, session) {
 137         this.name = name;
 138         this.wampSession = session;
 139         return this;
 140 };
 141
 142
 143 cloudeebus.BusConnection.prototype.getObject = function(busName, objectPath, introspectCB, errorCB) {
 144         var proxy = new cloudeebus.ProxyObject(this.wampSession, this, busName, objectPath);
 145         if (introspectCB)
 146                 proxy._introspect(introspectCB, errorCB);
 147         return proxy;
 148 };
 149
 150
 151 cloudeebus.BusConnection.prototype.addService = function(serviceName) {
 152         var self = this;
 153
 154         var future = new cloudeebus.Future(function (resolver) {
 155           cloudeebusService = new cloudeebus.Service(self.wampSession, self, serviceName);
 156
 157           function busServiceAddedSuccessCB(service) {
 158                   try {
 159                           service.isCreated = true;
 160                           var result = [cloudeebusService];
 161                           resolver.accept(result[0], true);
 162                   }
 163                   catch (e) {
 164                           cloudeebus.log("Method callback exception: " + e);
 165                           resolver.reject(e, true);
 166                   }
 167           }
 168
 169           function busServiceErrorSuccessCB(error) {
 170                   resolver.reject(error, true);
 171           }
 172
 173           cloudeebusService.add(this).then(busServiceAddedSuccessCB, busServiceErrorSuccessCB);
 174         });
 175
 176         return future;
 177 };
 178
 179 cloudeebus.BusConnection.prototype.removeService = function(serviceName, successCB, errorCB) {
 180         var self = this;
 181
 182         function busServiceRemovedSuccessCB(serviceName) {
 183                 // Be sure we are removing the service requested...
 184                 if (serviceName == self.service.name) {
 185                         self.service = null;
 186                         if (successCB)
 187                                 successCB(serviceName);
 188                 }
 189         }
 190
 191         cloudeebusService.remove(busServiceRemovedSuccessCB, errorCB);
 192 };
 193
 194
 195 /*****************************************************************************/
 196 //Generic definition for an agent. An agent need :
 197 //srvDbusName : the DBus parent service
 198 //objPath : a DBus path to access it
 199 //jsHdl : a Javascript handler to process methods,
 200 //xml : the xml which describe interface/methods/signals...
 201 Agent = function(srvDbusName, objPath, jsHdl, xml) {
 202         this.srvName = srvDbusName;
 203         this.registered = false;
 204         this.xml = xml;
 205         this.objectPath = objPath;
 206         this.jsHdl = jsHdl;
 207         return this;
 208 };
 209
 210
 211 cloudeebus.Service = function(session, busConnection, name) {
 212         this.wampSession = session;
 213         this.busConnection = busConnection;
 214         this.name = name;
 215         this.isCreated = false;
 216         return this;
 217 };
 218
 219 cloudeebus.Service.prototype.add = function(future) {
 220         var self = this;
 221         self.future = future;
 222         var resolver = self.future.resolver;
 223
 224         function ServiceAddedSuccessCB(serviceName) {
 225                 try { // calling dbus hook object function for un-translated types
 226                         var result = [self];
 227                         resolver.accept(result[0], true);
 228                 }
 229                 catch (e) {
 230                         cloudeebus.log("Method callback exception: " + e);
 231                         resolver.reject(e, true);
 232                 }
 233         }
 234
 235         function ServiceAddedErrorCB(error) {
 236                 cloudeebus.log("Error adding service method: " + self.name + ", error: " + error.desc);
 237                 self.future.resolver.reject(error.desc, true);
 238         }
 239
 240         var arglist = [
 241             this.busConnection,
 242             this.name
 243             ];
 244
 245         // call dbusSend with bus type, destination, object, message and arguments
 246         this.wampSession.call("serviceAdd", arglist).then(ServiceAddedSuccessCB, ServiceAddedErrorCB);
 247         return future;
 248 };
 249
 250 cloudeebus.Service.prototype.remove = function(successCB, errorCB) {
 251         function ServiceRemovedSuccessCB(serviceName) {
 252                 if (successCB) {
 253                         try {
 254                                 successCB(serviceName);
 255                         }
 256                         catch (e) {
 257                                 alert("Exception removing service " + serviceName + " : " + e);
 258                         }
 259                 }
 260         }
 261
 262         var arglist = [
 263             this.name
 264             ];
 265
 266         // call dbusSend with bus type, destination, object, message and arguments
 267         this.wampSession.call("serviceRelease", arglist).then(ServiceRemovedSuccessCB, errorCB);
 268 };
 269
 270 cloudeebus.Service.prototype._searchMethod = function(ifName, method, objectJS) {
 271
 272         var funcToCall = null;
 273
 274         // Check if 'objectJS' has a member 'interfaceProxies' with an interface named 'ifName'
 275         // and a method named 'method'
 276         if (objectJS.interfaceProxies && objectJS.interfaceProxies[ifName] &&
 277                 objectJS.interfaceProxies[ifName][method]) {
 278                 funcToCall = objectJS.interfaceProxies[ifName][method];
 279         } else {
 280                 // retrieve the method directly from 'root' of objectJs
 281                 funcToCall = objectJS[method];
 282         }
 283
 284         return funcToCall;
 285 };
 286
 287 cloudeebus.Service.prototype._addMethod = function(ifName, method, agent) {
 288
 289         var service = this;
 290         var methodId = this.name + "#" + agent.objectPath + "#" + ifName + "#" + method;
 291         var funcToCall = this._searchMethod(ifName, method, agent.jsHdl);
 292
 293         if (funcToCall == null)
 294                 cloudeebus.log("Method " + method + " doesn't exist in Javascript object");
 295         else {
 296                 agent.jsHdl.wrapperFunc[method] = function() {
 297                         var result;
 298                         var methodId = arguments[0];
 299                         var callDict = {};
 300                         // affectation of callDict in eval, otherwise dictionary(='{}') interpreted as block of code by eval
 301                         eval("callDict = " + arguments[1]);
 302                         try {
 303                                 result = funcToCall.apply(agent.jsHdl, callDict.args);
 304                                 service._returnMethod(methodId, callDict.callIndex, true, result);
 305                         }
 306                         catch (e) {
 307                                 cloudeebus.log("Method " + ifName + "." + method + " call on " + agent.objectPath + " exception: " + e);
 308                                 service._returnMethod(methodId, callDict.callIndex, false, e.message);
 309                         }
 310                 };
 311                 agent.jsHdl.methodId[agent.objectPath].push(methodId);
 312                 cloudeebus.log("subscribe " + methodId);
 313                 this.wampSession.subscribe(methodId, agent.jsHdl.wrapperFunc[method]);
 314         }
 315 };
 316
 317 cloudeebus.Service.prototype._addSignal = function(ifName, signal, agent) {
 318         var service = this;
 319         var methodExist = false;
 320
 321         if (agent.jsHdl.interfaceProxies && agent.jsHdl.interfaceProxies[ifName])
 322                 if (agent.jsHdl.interfaceProxies[ifName][signal]) {
 323                         methodExist = true;
 324                 } else {
 325                         agent.jsHdl.interfaceProxies[ifName][signal] = function() {
 326                                 service._emitSignal(agent.objectPath, signal, arguments[0]);
 327                         };
 328                 return;
 329         }
 330
 331         if ((agent.jsHdl[signal] == undefined || agent.jsHdl[signal] == null) && !methodExist)
 332                 agent.jsHdl[signal] = function() {
 333                         service.emitSignal(agent.objectPath, signal, arguments[0]);
 334                 };
 335         else
 336                 cloudeebus.log("Can not create new method to emit signal '" + signal + "' in object JS this method already exist!");
 337 };
 338
 339 cloudeebus.Service.prototype._createWrapper = function(agent) {
 340         var self = this;
 341         var parser = new DOMParser();
 342         var xmlDoc = parser.parseFromString(agent.xml, "text/xml");
 343         var ifXml = xmlDoc.getElementsByTagName("interface");
 344         agent.jsHdl.wrapperFunc = [];
 345         agent.jsHdl.methodId = [];
 346         agent.jsHdl.methodId[agent.objectPath] = [];
 347         for (var i=0; i < ifXml.length; i++) {
 348                 var ifName = ifXml[i].attributes.getNamedItem("name").value;
 349                 var ifChild = ifXml[i].firstChild;
 350                 while (ifChild) {
 351                         if (ifChild.nodeName == "method") {
 352                                 var metName = ifChild.attributes.getNamedItem("name").value;
 353                                 self._addMethod(ifName, metName, agent);
 354                         }
 355                         if (ifChild.nodeName == "signal") {
 356                                 var metName = ifChild.attributes.getNamedItem("name").value;
 357                                 self._addSignal(objectPath, ifName, metName, objectJS);
 358                         }
 359                         ifChild = ifChild.nextSibling;
 360                 }
 361         }
 362 };
 363
 364 cloudeebus.Service.prototype.addAgent = function(agent, successCB, errorCB) {
 365         function ServiceAddAgentSuccessCB(objPath) {
 366                 if (successCB) {
 367                         try {
 368                                 successCB(objPath);
 369                         }
 370                         catch (e) {
 371                                 alert("Exception adding agent " + agent.objectPath + " : " + e);
 372                         }
 373                 }
 374         }
 375
 376         try {
 377                 this._createWrapper(agent);
 378         }
 379         catch (e) {
 380                 alert("Exception creating agent wrapper " + agent.objectPath + " : " + e);
 381                 errorCB(e);
 382                 return;
 383         }
 384
 385         var arglist = [
 386             agent.objectPath,
 387             agent.xml
 388             ];
 389
 390         // call dbusSend with bus type, destination, object, message and arguments
 391         this.wampSession.call("serviceAddAgent", arglist).then(ServiceAddAgentSuccessCB, errorCB);
 392 };
 393
 394 cloudeebus.Service.prototype._deleteWrapper = function(agent) {
 395         var self = this;
 396         var objJs = agent.jsHdl;
 397         if (objJs.methodId[agent.objectPath]) {
 398                 for (var idx in objJs.methodId[agent.objectPath]) {
 399                         try {
 400                                 cloudeebus.log("unsubscribe " + objJs.methodId[agent.objectPath][idx]);
 401                                 this.wampSession.unsubscribe(objJs.methodId[agent.objectPath][idx]);
 402                                 objJs.methodId[agent.objectPath][idx] = null;
 403                         }
 404                         catch (e) {
 405                                 cloudeebus.log("Unsubscribe error: " + e);
 406                         }
 407                 }
 408                 delete objJs.methodId[agent.objectPath];
 409         }
 410 };
 411
 412 cloudeebus.Service.prototype.delAgent = function(rmAgent, successCB, errorCB) {
 413         function ServiceDelAgentSuccessCB(agent) {
 414                 if (successCB) {
 415                         try {
 416                                 successCB(agent);
 417                         }
 418                         catch (e) {
 419                                 alert("Exception deleting agent " + rmAgent.objectPath + " : " + e);
 420                                 errorCB(e);
 421                         }
 422                 }
 423         }
 424
 425         try {
 426                 this._deleteWrapper(rmAgent);
 427         }
 428         catch (e) {
 429                 alert("Exception deleting agent wrapper " + rmAgent.objectPath + " : " + e);
 430                 errorCB(e);
 431         }
 432
 433         var arglist = [
 434             rmAgent.objectPath
 435             ];
 436
 437         // call dbusSend with bus type, destination, object, message and arguments
 438         this.wampSession.call("serviceDelAgent", arglist).then(ServiceDelAgentSuccessCB, errorCB);
 439 };
 440
 441 cloudeebus.Service.prototype._returnMethod = function(methodId, callIndex, success, result, successCB, errorCB) {
 442         var arglist = [
 443             methodId,
 444             callIndex,
 445             success,
 446             result
 447             ];
 448
 449         this.wampSession.call("returnMethod", arglist).then(successCB, errorCB);
 450 };
 451
 452 cloudeebus.Service.prototype._emitSignal = function(objectPath, signalName, result, successCB, errorCB) {
 453         var arglist = [
 454             objectPath,
 455             signalName,
 456             result
 457             ];
 458
 459         this.wampSession.call("emitSignal", arglist).then(successCB, errorCB);
 460 };
 461
 462
 463 /*****************************************************************************/
 464
 465 function _processWrappers(wrappers, value) {
 466         for (var i=0; i<wrappers.length; i++)
 467                 wrappers[i](value);
 468 }
 469
 470
 471 function _processWrappersAsync(wrappers, value) {
 472         var taskid = -1;
 473         function processAsyncOnce() {
 474                 _processWrappers(wrappers, value);
 475                 clearInterval(taskid);
 476         }
 477         taskid = setInterval(processAsyncOnce, 200);
 478 }
 479
 480
 481
 482 /*****************************************************************************/
 483
 484 cloudeebus.FutureResolver = function(future) {
 485         this.future = future;
 486         this.resolved = null;
 487     return this;
 488 };
 489
 490
 491 cloudeebus.FutureResolver.prototype.resolve = function(value, sync) {
 492         if (this.resolved)
 493                 return;
 494
 495         var then = (value && value.then && value.then.apply) ? value.then : null;
 496         if (then) {
 497                 var self = this;
 498                 var acceptCallback = function(arg) {
 499                         self.resolve(arg, true);
 500                 };
 501                 var rejectCallback = function(arg) {
 502                         self.reject(arg, true);
 503                 };
 504                 try {
 505                         then.apply(value, [acceptCallback, rejectCallback]);
 506                 }
 507                 catch (e) {
 508                         this.reject(e, true);
 509                 }
 510         }
 511
 512         this.accept(value, sync);
 513 };
 514
 515
 516 cloudeebus.FutureResolver.prototype.accept = function(value, sync) {
 517         if (this.resolved)
 518                 return;
 519
 520         var future = this.future;
 521         future.state = "accepted";
 522         future.result = value;
 523
 524         this.resolved = true;
 525         if (sync)
 526                 _processWrappers(future._acceptWrappers, value);
 527         else
 528                 _processWrappersAsync(future._acceptWrappers, value);
 529 };
 530
 531
 532 cloudeebus.FutureResolver.prototype.reject = function(value, sync) {
 533         if (this.resolved)
 534                 return;
 535
 536         var future = this.future;
 537         future.state = "rejected";
 538         future.result = value;
 539
 540         this.resolved = true;
 541         if (sync)
 542                 _processWrappers(future._rejectWrappers, value);
 543         else
 544                 _processWrappersAsync(future._rejectWrappers, value);
 545 };
 546
 547
 548
 549 /*****************************************************************************/
 550
 551 cloudeebus.Future = function(init) {
 552         this.state = "pending";
 553         this.result = null;
 554         this._acceptWrappers = [];
 555         this._rejectWrappers = [];
 556         this.resolver = new cloudeebus.FutureResolver(this);
 557         if (init) {
 558                 try {
 559                         init.apply(this, [this.resolver]);
 560                 }
 561                 catch (e) {
 562                         this.resolver.reject(e, true);
 563                 }
 564         }
 565     return this;
 566 };
 567
 568
 569 cloudeebus.Future.prototype.appendWrappers = function(acceptWrapper, rejectWrapper) {
 570         this._acceptWrappers.push(acceptWrapper);
 571         this._rejectWrappers.push(rejectWrapper);
 572         if (this.state == "accepted")
 573                 _processWrappersAsync(this._acceptWrappers, this.result);
 574         if (this.state == "rejected")
 575                 _processWrappersAsync(this._rejectWrappers, this.result);
 576 };
 577
 578
 579 cloudeebus.Future.prototype.then = function(acceptCB, rejectCB) {
 580         var future = new cloudeebus.Future();
 581         var resolver = future.resolver;
 582         var acceptWrapper, rejectWrapper;
 583
 584         if (acceptCB)
 585                 acceptWrapper = function(arg) {
 586                         try {
 587                                 var value = acceptCB.apply(future, [arg]);
 588                                 resolver.resolve(value, true);
 589                         }
 590                         catch (e) {
 591                                 resolver.reject(e, true);
 592                         }
 593                 };
 594         else
 595                 acceptWrapper = function(arg) {
 596                         resolver.accept(arg, true);
 597                 };
 598
 599         if (rejectCB)
 600                 rejectWrapper = function(arg) {
 601                         try {
 602                                 var value = rejectCB.apply(future, [arg]);
 603                                 resolver.resolve(value, true);
 604                         }
 605                         catch (e) {
 606                                 resolver.reject(e, true);
 607                         }
 608                 };
 609         else
 610                 rejectWrapper = function(arg) {
 611                         resolver.reject(arg, true);
 612                 };
 613
 614         this.appendWrappers(acceptWrapper,rejectWrapper);
 615         return future;
 616 };
 617
 618
 619
 620 /*****************************************************************************/
 621
 622 function _processWrappers(wrappers, value) {
 623         for (var i=0; i<wrappers.length; i++)
 624                 wrappers[i](value);
 625 }
 626
 627
 628 function _processWrappersAsync(wrappers, value) {
 629         var taskid = -1;
 630         function processAsyncOnce() {
 631                 _processWrappers(wrappers, value);
 632                 clearInterval(taskid);
 633         }
 634         taskid = setInterval(processAsyncOnce, 200);
 635 }
 636
 637
 638
 639 /*****************************************************************************/
 640
 641 cloudeebus.PromiseResolver = function(promise) {
 642         this.promise = promise;
 643         this.resolved = null;
 644     return this;
 645 };
 646
 647
 648 cloudeebus.PromiseResolver.prototype.resolve = function(value, sync) {
 649         if (this.resolved)
 650                 return;
 651
 652         var then = (value && value.then && value.then.apply) ? value.then : null;
 653         if (then) {
 654                 var self = this;
 655                 var fulfillCallback = function(arg) {
 656                         self.resolve(arg, true);
 657                 };
 658                 var rejectCallback = function(arg) {
 659                         self.reject(arg, true);
 660                 };
 661                 try {
 662                         then.apply(value, [fulfillCallback, rejectCallback]);
 663                 }
 664                 catch (e) {
 665                         this.reject(e, true);
 666                 }
 667         }
 668
 669         this.fulfill(value, sync);
 670 };
 671
 672
 673 cloudeebus.PromiseResolver.prototype.fulfill = function(value, sync) {
 674         if (this.resolved)
 675                 return;
 676
 677         var promise = this.promise;
 678         promise.state = "fulfilled";
 679         promise.result = value;
 680
 681         this.resolved = true;
 682         if (sync)
 683                 _processWrappers(promise._fulfillWrappers, value);
 684         else
 685                 _processWrappersAsync(promise._fulfillWrappers, value);
 686 };
 687
 688
 689 cloudeebus.PromiseResolver.prototype.reject = function(value, sync) {
 690         if (this.resolved)
 691                 return;
 692
 693         var promise = this.promise;
 694         promise.state = "rejected";
 695         promise.result = value;
 696
 697         this.resolved = true;
 698         if (sync)
 699                 _processWrappers(promise._rejectWrappers, value);
 700         else
 701                 _processWrappersAsync(promise._rejectWrappers, value);
 702 };
 703
 704
 705
 706 /*****************************************************************************/
 707
 708 cloudeebus.Promise = function(init) {
 709         this.state = "pending";
 710         this.result = null;
 711         this._fulfillWrappers = [];
 712         this._rejectWrappers = [];
 713         this.resolver = new cloudeebus.PromiseResolver(this);
 714         if (init) {
 715                 try {
 716                         init.apply(this, [this.resolver]);
 717                 }
 718                 catch (e) {
 719                         this.resolver.reject(e, true);
 720                 }
 721         }
 722     return this;
 723 };
 724
 725
 726 cloudeebus.Promise.prototype.appendWrappers = function(fulfillWrapper, rejectWrapper) {
 727         if (fulfillWrapper)
 728                 this._fulfillWrappers.push(fulfillWrapper);
 729         if (rejectWrapper)
 730                 this._rejectWrappers.push(rejectWrapper);
 731         if (this.state == "fulfilled")
 732                 _processWrappersAsync(this._fulfillWrappers, this.result);
 733         if (this.state == "rejected")
 734                 _processWrappersAsync(this._rejectWrappers, this.result);
 735 };
 736
 737
 738 cloudeebus.Promise.prototype.then = function(fulfillCB, rejectCB) {
 739         var promise = new cloudeebus.Promise();
 740         var resolver = promise.resolver;
 741         var fulfillWrapper, rejectWrapper;
 742
 743         if (fulfillCB)
 744                 fulfillWrapper = function(arg) {
 745                         try {
 746                                 var value = fulfillCB.apply(promise, [arg]);
 747                                 resolver.resolve(value, true);
 748                         }
 749                         catch (e) {
 750                                 resolver.reject(e, true);
 751                         }
 752                 };
 753         else
 754                 fulfillWrapper = function(arg) {
 755                         resolver.fulfill(arg, true);
 756                 };
 757
 758         if (rejectCB)
 759                 rejectWrapper = function(arg) {
 760                         try {
 761                                 var value = rejectCB.apply(promise, [arg]);
 762                                 resolver.resolve(value, true);
 763                         }
 764                         catch (e) {
 765                                 resolver.reject(e, true);
 766                         }
 767                 };
 768         else
 769                 rejectWrapper = function(arg) {
 770                         resolver.reject(arg, true);
 771                 };
 772
 773         this.appendWrappers(fulfillWrapper,rejectWrapper);
 774         return promise;
 775 };
 776
 777
 778 cloudeebus.Promise.prototype["catch"] = function(rejectCB) {
 779         return this.then(undefined,rejectCB);
 780 };
 781
 782
 783 cloudeebus.Promise.prototype.done = function(fulfillCB, rejectCB) {
 784         this.appendWrappers(fulfillCB,rejectCB);
 785 };
 786
 787
 788 cloudeebus.Promise.resolve = function(value) {
 789         var promise = new cloudeebus.Promise();
 790         promise.resolver.resolve(value);
 791         return promise;
 792 };
 793
 794
 795 cloudeebus.Promise.fulfill = function(value) {
 796         var promise = new cloudeebus.Promise();
 797         promise.resolver.fulfill(value);
 798         return promise;
 799 };
 800
 801
 802 cloudeebus.Promise.reject = function(value) {
 803         var promise = new cloudeebus.Promise();
 804         promise.resolver.reject(value);
 805         return promise;
 806 };
 807
 808
 809 cloudeebus.Promise.any = function() {
 810         var promise = new cloudeebus.Promise();
 811         var resolver = promise.resolver;
 812         var fulfillCallback = function(arg) {
 813                 resolver.resolve(arg, true);
 814         };
 815         var rejectCallback = function(arg) {
 816                 resolver.reject(arg, true);
 817         };
 818         if (arguments.length == 0)
 819                 resolver.resolve(undefined, true);
 820         else
 821                 for (i in arguments)
 822                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 823         return promise;
 824 };
 825
 826
 827 cloudeebus.Promise.every = function() {
 828         var promise = new cloudeebus.Promise();
 829         var resolver = promise.resolver;
 830         var index = 0;
 831         var countdown = arguments.length;
 832         var args = new Array(countdown);
 833         var rejectCallback = function(arg) {
 834                 resolver.reject(arg, true);
 835         };
 836         if (arguments.length == 0)
 837                 resolver.resolve(undefined, true);
 838         else
 839                 for (i in arguments) {
 840                         var fulfillCallback = function(arg) {
 841                                 args[index] = arg;
 842                                 countdown--;
 843                                 if (countdown == 0)
 844                                         resolver.resolve(args, true);
 845                         };
 846                         index++;
 847                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 848                 }
 849
 850         return promise;
 851 };
 852
 853
 854 cloudeebus.Promise.some = function() {
 855         var promise = new cloudeebus.Promise();
 856         var resolver = promise.resolver;
 857         var index = 0;
 858         var countdown = arguments.length;
 859         var args = new Array(countdown);
 860         var fulfillCallback = function(arg) {
 861                 resolver.resolve(arg, true);
 862         };
 863         if (arguments.length == 0)
 864                 resolver.resolve(undefined, true);
 865         else
 866                 for (i in arguments) {
 867                         var rejectCallback = function(arg) {
 868                                 args[index] = arg;
 869                                 countdown--;
 870                                 if (countdown == 0)
 871                                         resolver.reject(args, true);
 872                         };
 873                         index++;
 874                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 875                 }
 876
 877         return promise;
 878 };
 879
 880
 881
 882 /*****************************************************************************/
 883
 884 cloudeebus.ProxyObject = function(session, busConnection, busName, objectPath) {
 885         this.wampSession = session;
 886         this.busConnection = busConnection;
 887         this.busName = busName;
 888         this.objectPath = objectPath;
 889         this.interfaceProxies = {};
 890         return this;
 891 };
 892
 893
 894 cloudeebus.ProxyObject.prototype.getInterface = function(ifName) {
 895         return this.interfaceProxies[ifName];
 896 };
 897
 898
 899 cloudeebus.ProxyObject.prototype._introspect = function(successCB, errorCB) {
 900
 901         var self = this;
 902
 903         function getAllPropertiesSuccessCB(props) {
 904                 var ifProxy = self.interfaceProxies[self.propInterfaces[self.propInterfaces.length-1]];
 905                 for (var prop in props)
 906                         ifProxy[prop] = self[prop] = props[prop];
 907                 getAllPropertiesNextInterfaceCB();
 908         }
 909
 910         function getAllPropertiesNextInterfaceCB() {
 911                 self.propInterfaces.pop();
 912                 if (self.propInterfaces.length > 0)
 913                         self.callMethod("org.freedesktop.DBus.Properties",
 914                                 "GetAll",
 915                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 916                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 917                 else {
 918                         self.propInterfaces = null;
 919                         if (successCB)
 920                                 successCB(self);
 921                 }
 922         }
 923
 924         function introspectSuccessCB(str) {
 925                 var parser = new DOMParser();
 926                 var xmlDoc = parser.parseFromString(str, "text/xml");
 927                 var interfaces = xmlDoc.getElementsByTagName("interface");
 928                 self.propInterfaces = [];
 929                 var supportDBusProperties = false;
 930                 for (var i=0; i < interfaces.length; i++) {
 931                         var ifName = interfaces[i].attributes.getNamedItem("name").value;
 932                         self.interfaceProxies[ifName] = new cloudeebus.ProxyObject(self.wampSession, self.busConnection, self.busName, self.objectPath);
 933                         if (ifName == "org.freedesktop.DBus.Properties")
 934                                 supportDBusProperties = true;
 935                         var hasProperties = false;
 936                         var ifChild = interfaces[i].firstChild;
 937                         while (ifChild) {
 938                                 if (ifChild.nodeName == "method") {
 939                                         var nArgs = 0;
 940                                         var signature = "";
 941                                         var metChild = ifChild.firstChild;
 942                                         while (metChild) {
 943                                                 if (metChild.nodeName == "arg" &&
 944                                                         metChild.attributes.getNamedItem("direction").value == "in") {
 945                                                                 signature += metChild.attributes.getNamedItem("type").value;
 946                                                                 nArgs++;
 947                                                 }
 948                                                 metChild = metChild.nextSibling;
 949                                         }
 950                                         var metName = ifChild.attributes.getNamedItem("name").value;
 951                                         if (!self[metName])
 952                                                 self._addMethod(ifName, metName, nArgs, signature);
 953                                         self.interfaceProxies[ifName]._addMethod(ifName, metName, nArgs, signature);
 954                                 }
 955                                 else if (ifChild.nodeName == "property") {
 956                                         if (!hasProperties)
 957                                                 self.propInterfaces.push(ifName);
 958                                         hasProperties = true;
 959                                 }
 960                                 ifChild = ifChild.nextSibling;
 961                         }
 962                 }
 963                 if (supportDBusProperties && self.propInterfaces.length > 0) {
 964                         self.callMethod("org.freedesktop.DBus.Properties",
 965                                 "GetAll",
 966                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 967                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 968                 }
 969                 else {
 970                         self.propInterfaces = null;
 971                         if (successCB)
 972                                 successCB(self);
 973                 }
 974         }
 975
 976         // call Introspect on self
 977         self.callMethod("org.freedesktop.DBus.Introspectable", "Introspect", []).then(introspectSuccessCB, errorCB);
 978 };
 979
 980
 981 cloudeebus.ProxyObject.prototype._addMethod = function(ifName, method, nArgs, signature) {
 982
 983         var self = this;
 984
 985         self[method] = function() {
 986                 var args = [];
 987                 for (var i=0; i < nArgs; i++ )
 988                         args.push(arguments[i]);
 989                 return self.callMethod(ifName, method, args, signature);
 990         };
 991 };
 992
 993
 994 cloudeebus.ProxyObject.prototype.callMethod = function(ifName, method, args, signature) {
 995
 996         var self = this;
 997
 998         var promise = new cloudeebus.Promise(function (resolver) {
 999                 function callMethodSuccessCB(str) {
1000                         try { // calling dbus hook object function for un-translated types
1001                                 var result = eval(str);
1002                                 resolver.fulfill(result[0], true);
1003                         }
1004                         catch (e) {
1005                                 cloudeebus.log("Method callback exception: " + e);
1006                                 resolver.reject(e, true);
1007                         }
1008                 }
1009
1010                 function callMethodErrorCB(error) {
1011                         cloudeebus.log("Error calling method: " + method + " on object: " + self.objectPath + " : " + error.desc);
1012                         resolver.reject(error.desc, true);
1013                 }
1014
1015                 var arglist = [
1016                         self.busConnection.name,
1017                         self.busName,
1018                         self.objectPath,
1019                         ifName,
1020                         method,
1021                         JSON.stringify(args)
1022                 ];
1023
1024                 // call dbusSend with bus type, destination, object, message and arguments
1025                 self.wampSession.call("dbusSend", arglist).then(callMethodSuccessCB, callMethodErrorCB);
1026         });
1027
1028         return promise;
1029 };
1030
1031
1032 cloudeebus.ProxyObject.prototype.connectToSignal = function(ifName, signal, handlerCB, errorCB) {
1033
1034         var self = this;
1035
1036         function signalHandler(id, data) {
1037                 if (handlerCB) {
1038                         try { // calling dbus hook object function for un-translated types
1039                                 handlerCB.apply(self, eval(data));
1040                         }
1041                         catch (e) {
1042                                 cloudeebus.log("Signal handler exception: " + e);
1043                                 if (errorCB)
1044                                         errorCB(e);
1045                         }
1046                 }
1047         }
1048
1049         function connectToSignalSuccessCB(str) {
1050                 try {
1051                         self.wampSession.subscribe(str, signalHandler);
1052                 }
1053                 catch (e) {
1054                         cloudeebus.log("Subscribe error: " + e);
1055                 }
1056         }
1057
1058         function connectToSignalErrorCB(error) {
1059                 cloudeebus.log("Error connecting to signal: " + signal + " on object: " + self.objectPath + " : " + error.desc);
1060                 if (errorCB)
1061                         errorCB(error.desc);
1062         }
1063
1064         var arglist = [
1065                 self.busConnection.name,
1066                 self.busName,
1067                 self.objectPath,
1068                 ifName,
1069                 signal
1070         ];
1071
1072         // call dbusSend with bus type, destination, object, message and arguments
1073         self.wampSession.call("dbusRegister", arglist).then(connectToSignalSuccessCB, connectToSignalErrorCB);
1074 };
1075
1076
1077 cloudeebus.ProxyObject.prototype.disconnectSignal = function(ifName, signal) {
1078         try {
1079                 this.wampSession.unsubscribe(this.busConnection.name + "#" + this.busName + "#" + this.objectPath + "#" + ifName + "#" + signal);
1080         }
1081         catch (e) {
1082                 cloudeebus.log("Unsubscribe error: " + e);
1083         }
1084 };