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: "0.5.99",
  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                 var 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                                 resolver.fulfill(cloudeebusService, true);
 175                         }
 176                         catch (e) {
 177                                 var errorStr = cloudeebus.getError(e);
 178                                 cloudeebus.log("Method callback exception: " + errorStr);
 179                                 resolver.reject(errorStr, true);
 180                         }
 181                 }
 182
 183                 function ServiceAddedErrorCB(error) {
 184                         var errorStr = cloudeebus.getError(error);
 185                         cloudeebus.log("Error adding service method: " + self.name + ", error: " + errorStr);
 186                         resolver.reject(errorStr, true);
 187                 }
 188
 189                 var arglist = [
 190                     self.name,
 191                     serviceName
 192                     ];
 193
 194                 // call dbusSend with bus type, destination, object, message and arguments
 195                 self.wampSession.call("serviceAdd", arglist).then(ServiceAddedSuccessCB, ServiceAddedErrorCB);
 196         });
 197
 198         return promise;
 199 };
 200
 201
 202
 203 /*****************************************************************************/
 204 //Generic definition for an agent. An agent needs :
 205 //srvDbusName : the DBus parent service
 206 //objPath : a DBus path to access it
 207 //jsHdl : a Javascript handler to process methods,
 208 //xml : the xml which describe interface/methods/signals...
 209 cloudeebus.Agent = function(srvDbusName, objPath, jsHdl, xml) {
 210         this.srvName = srvDbusName;
 211         this.registered = false;
 212         this.xml = xml;
 213         this.objectPath = objPath;
 214         this.jsHdl = jsHdl;
 215         return this;
 216 };
 217
 218
 219 cloudeebus.Service = function(session, busConnection, name) {
 220         this.wampSession = session;
 221         this.busConnection = busConnection;
 222         this.name = name;
 223         this.agents = [];
 224         this.isCreated = false;
 225         return this;
 226 };
 227
 228
 229 cloudeebus.Service.prototype.remove = function() {
 230         var self = this;
 231
 232         var promise = new cloudeebus.Promise(function (resolver) {
 233                 function ServiceRemovedSuccessCB(serviceName) {
 234                         try {
 235                                 resolver.fulfill(serviceName, true);
 236                         }
 237                         catch (e) {
 238                                 var errorStr = cloudeebus.getError(e);
 239                                 cloudeebus.log("Method callback exception: " + errorStr);
 240                                 resolver.reject(errorStr, true);
 241                         }
 242                 }
 243
 244                 function ServiceRemovedErrorCB(error) {
 245                         var errorStr = cloudeebus.getError(error);
 246                         cloudeebus.log("Error removing service : " + self.name + ", error: " + errorStr);
 247                         self.promise.resolver.reject(errorStr, true);
 248                 }
 249
 250                 for (var idx in self.agents) {
 251                         if (self.agents[idx]) {
 252                                 self.removeAgent(self.agents[idx]);
 253                         }
 254                 }
 255
 256                 var arglist = [
 257                     self.name
 258                     ];
 259
 260                 // call dbusSend with bus type, destination, object, message and arguments
 261                 self.wampSession.call("serviceRelease", arglist).then(ServiceRemovedSuccessCB, ServiceRemovedErrorCB);
 262         });
 263
 264         return promise;
 265 };
 266
 267
 268 cloudeebus.Service.prototype._searchMethod = function(ifName, method, objectJS) {
 269
 270         var funcToCall = null;
 271
 272         // Check if 'objectJS' has a member 'interfaceProxies' with an interface named 'ifName'
 273         // and a method named 'method'
 274         if (objectJS.interfaceProxies && objectJS.interfaceProxies[ifName] &&
 275                 objectJS.interfaceProxies[ifName][method]) {
 276                 funcToCall = objectJS.interfaceProxies[ifName][method];
 277         } else {
 278                 // retrieve the method directly from 'root' of objectJs
 279                 funcToCall = objectJS[method];
 280         }
 281
 282         return funcToCall;
 283 };
 284
 285
 286 cloudeebus.Service.prototype._addMethod = function(ifName, method, agent) {
 287
 288         var service = this;
 289         var methodId = this.name + "#" + agent.objectPath + "#" + ifName + "#" + method;
 290         var funcToCall = this._searchMethod(ifName, method, agent.jsHdl);
 291
 292         if (funcToCall == null)
 293                 cloudeebus.log("Method " + method + " doesn't exist in Javascript object");
 294         else {
 295                 agent.jsHdl.wrapperFunc[method] = function() {
 296                         var result;
 297                         var methodId = arguments[0];
 298                         var callDict = {};
 299                         // affectation of callDict in eval, otherwise dictionary(='{}') interpreted as block of code by eval
 300                         eval("callDict = " + arguments[1]);
 301                         try {
 302                                 result = funcToCall.apply(agent.jsHdl, callDict.args);
 303                                 service._returnMethod(methodId, callDict.callIndex, true, result);
 304                         }
 305                         catch (e) {
 306                                 var errorStr = cloudeebus.getError(e);
 307                                 cloudeebus.log("Method " + ifName + "." + method + " call on " + agent.objectPath + " exception: " + errorStr);
 308                                 service._returnMethod(methodId, callDict.callIndex, false, errorStr);
 309                         }
 310                 };
 311                 agent.jsHdl.methodId[agent.objectPath].push(methodId);
 312                 this.wampSession.subscribe(methodId, agent.jsHdl.wrapperFunc[method]);
 313         }
 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
 340 cloudeebus.Service.prototype._createWrapper = function(agent) {
 341         var self = this;
 342         var parser = new DOMParser();
 343         var xmlDoc = parser.parseFromString(agent.xml, "text/xml");
 344         var ifXml = xmlDoc.getElementsByTagName("interface");
 345         agent.jsHdl.wrapperFunc = [];
 346         agent.jsHdl.methodId = [];
 347         agent.jsHdl.methodId[agent.objectPath] = [];
 348         for (var i=0; i < ifXml.length; i++) {
 349                 var ifName = ifXml[i].attributes.getNamedItem("name").value;
 350                 var ifChild = ifXml[i].firstChild;
 351                 while (ifChild) {
 352                         if (ifChild.nodeName == "method") {
 353                                 var metName = ifChild.attributes.getNamedItem("name").value;
 354                                 self._addMethod(ifName, metName, agent);
 355                         }
 356                         if (ifChild.nodeName == "signal") {
 357                                 var metName = ifChild.attributes.getNamedItem("name").value;
 358                                 self._addSignal(ifName, metName, agent);
 359                         }
 360                         ifChild = ifChild.nextSibling;
 361                 }
 362         }
 363 };
 364
 365
 366 cloudeebus.Service.prototype.addAgent = function(agent) {
 367         var self = this;
 368
 369         var promise = new cloudeebus.Promise(function (resolver) {
 370                 function ServiceAddAgentSuccessCB(objPath) {
 371                         try { // calling dbus hook object function for un-translated types
 372                                 self.agents.push(agent);
 373                                 agent.registered = true;
 374                                 var result = [ objPath ];
 375                                 resolver.fulfill(result[0], true);
 376                         }
 377                         catch (e) {
 378                                 var errorStr = cloudeebus.getError(e);
 379                                 cloudeebus.log("Method callback exception: " + errorStr);
 380                                 resolver.reject(errorStr, true);
 381                         }
 382                 }
 383
 384                 function ServiceAddAgenterrorCB(error) {
 385                         var errorStr = cloudeebus.getError(error);
 386                         cloudeebus.log("Error adding agent : " + agent.objectPath + ", error: " + errorStr);
 387                         self.promise.resolver.reject(errorStr, true);
 388                 }
 389
 390                 try {
 391                         self._createWrapper(agent);
 392                 }
 393                 catch (e) {
 394                         var errorStr = cloudeebus.getError(e);
 395                         cloudeebus.log("Exception creating agent wrapper " + agent.objectPath + " : " + errorStr);
 396                         resolver.reject(errorStr, true);
 397                         return;
 398                 }
 399
 400                 var arglist = [
 401                     agent.objectPath,
 402                     agent.xml
 403                     ];
 404
 405                 // call dbusSend with bus type, destination, object, message and arguments
 406                 self.wampSession.call("serviceAddAgent", arglist).then(ServiceAddAgentSuccessCB, ServiceAddAgenterrorCB);
 407         });
 408
 409         return promise;
 410 };
 411
 412
 413 cloudeebus.Service.prototype._deleteWrapper = function(agent) {
 414         var objJs = agent.jsHdl;
 415         if (objJs.methodId[agent.objectPath]) {
 416                 for (var idx in objJs.methodId[agent.objectPath]) {
 417                         try {
 418                                 cloudeebus.log("unsubscribe " + objJs.methodId[agent.objectPath][idx]);
 419                                 this.wampSession.unsubscribe(objJs.methodId[agent.objectPath][idx]);
 420                                 objJs.methodId[agent.objectPath][idx] = null;
 421                         }
 422                         catch (e) {
 423                                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 424                         }
 425                 }
 426                 delete objJs.methodId[agent.objectPath];
 427         }
 428 };
 429
 430
 431 cloudeebus.Service.prototype.removeAgent = function(rmAgent, successCB, errorCB) {
 432         var self = this;
 433
 434         var promise = new cloudeebus.Promise(function (resolver) {
 435                 function ServiceRemoveAgentSuccessCB(agent) {
 436                         try { // calling dbus hook object function for un-translated types
 437                                 self.agents.push(agent);
 438                                 agent.registered = true;
 439                                 var result = [ agent ];
 440                                 resolver.fulfill(result[0], true);
 441                         }
 442                         catch (e) {
 443                                 var errorStr = cloudeebus.getError(e);
 444                                 cloudeebus.log("Method callback exception: " + errorStr);
 445                                 resolver.reject(errorStr, true);
 446                         }
 447                 }
 448
 449                 function ServiceRemoveAgentErrorCB(error) {
 450                         var errorStr = cloudeebus.getError(error);
 451                         cloudeebus.log("Error removing agent : " + rmAgent.objectPath + ", error: " + errorStr);
 452                         self.promise.resolver.reject(errorStr, true);
 453                 }
 454
 455                 try {
 456                         self._deleteWrapper(rmAgent);
 457                 }
 458                 catch (e) {
 459                         var errorStr = cloudeebus.getError(e);
 460                         cloudeebus.log("Exception removing wrapper of agent " + rmAgent.objectPath + " : " + errorStr);
 461                         errorCB(errorStr);
 462                 }
 463
 464                 var arglist = [
 465                     rmAgent.objectPath
 466                     ];
 467
 468                 // call dbusSend with bus type, destination, object, message and arguments
 469                 self.wampSession.call("serviceDelAgent", arglist).then(ServiceRemoveAgentSuccessCB, ServiceRemoveAgentErrorCB);
 470         });
 471
 472         return promise;
 473 };
 474
 475
 476 cloudeebus.Service.prototype._returnMethod = function(methodId, callIndex, success, result, successCB, errorCB) {
 477         var arglist = [
 478             methodId,
 479             callIndex,
 480             success,
 481             result
 482             ];
 483
 484         this.wampSession.call("returnMethod", arglist).then(successCB, errorCB);
 485 };
 486
 487
 488 cloudeebus.Service.prototype._emitSignal = function(objectPath, signalName, result, successCB, errorCB) {
 489         var arglist = [
 490             objectPath,
 491             signalName,
 492             result
 493             ];
 494
 495         this.wampSession.call("emitSignal", arglist).then(successCB, errorCB);
 496 };
 497
 498
 499
 500 /*****************************************************************************/
 501
 502 function _processWrappers(wrappers, value) {
 503         for (var i=0; i<wrappers.length; i++)
 504                 wrappers[i](value);
 505 }
 506
 507
 508 function _processWrappersAsync(wrappers, value) {
 509         var taskid = -1;
 510         function processAsyncOnce() {
 511                 _processWrappers(wrappers, value);
 512                 clearInterval(taskid);
 513         }
 514         taskid = setInterval(processAsyncOnce, 200);
 515 }
 516
 517
 518
 519 /*****************************************************************************/
 520
 521 cloudeebus.PromiseResolver = function(promise) {
 522         this.promise = promise;
 523         this.resolved = null;
 524     return this;
 525 };
 526
 527
 528 cloudeebus.PromiseResolver.prototype.resolve = function(value, sync) {
 529         if (this.resolved)
 530                 return;
 531
 532         var then = (value && value.then && value.then.apply) ? value.then : null;
 533         if (then) {
 534                 var self = this;
 535                 var fulfillCallback = function(arg) {
 536                         self.resolve(arg, true);
 537                 };
 538                 var rejectCallback = function(arg) {
 539                         self.reject(arg, true);
 540                 };
 541                 try {
 542                         then.apply(value, [fulfillCallback, rejectCallback]);
 543                 }
 544                 catch (e) {
 545                         this.reject(cloudeebus.getError(e), true);
 546                 }
 547         }
 548
 549         this.fulfill(value, sync);
 550 };
 551
 552
 553 cloudeebus.PromiseResolver.prototype.fulfill = function(value, sync) {
 554         if (this.resolved)
 555                 return;
 556
 557         var promise = this.promise;
 558         promise.state = "fulfilled";
 559         promise.result = value;
 560
 561         this.resolved = true;
 562         if (sync)
 563                 _processWrappers(promise._fulfillWrappers, value);
 564         else
 565                 _processWrappersAsync(promise._fulfillWrappers, value);
 566 };
 567
 568
 569 cloudeebus.PromiseResolver.prototype.reject = function(value, sync) {
 570         if (this.resolved)
 571                 return;
 572
 573         var promise = this.promise;
 574         promise.state = "rejected";
 575         promise.result = value;
 576
 577         this.resolved = true;
 578         if (sync)
 579                 _processWrappers(promise._rejectWrappers, value);
 580         else
 581                 _processWrappersAsync(promise._rejectWrappers, value);
 582 };
 583
 584
 585
 586 /*****************************************************************************/
 587
 588 cloudeebus.Promise = function(init) {
 589         this.state = "pending";
 590         this.result = null;
 591         this._fulfillWrappers = [];
 592         this._rejectWrappers = [];
 593         this.resolver = new cloudeebus.PromiseResolver(this);
 594         if (init) {
 595                 try {
 596                         init.apply(this, [this.resolver]);
 597                 }
 598                 catch (e) {
 599                         this.resolver.reject(cloudeebus.getError(e), true);
 600                 }
 601         }
 602     return this;
 603 };
 604
 605
 606 cloudeebus.Promise.prototype.appendWrappers = function(fulfillWrapper, rejectWrapper) {
 607         if (fulfillWrapper)
 608                 this._fulfillWrappers.push(fulfillWrapper);
 609         if (rejectWrapper)
 610                 this._rejectWrappers.push(rejectWrapper);
 611         if (this.state == "fulfilled")
 612                 _processWrappersAsync(this._fulfillWrappers, this.result);
 613         if (this.state == "rejected")
 614                 _processWrappersAsync(this._rejectWrappers, this.result);
 615 };
 616
 617
 618 cloudeebus.Promise.prototype.then = function(fulfillCB, rejectCB) {
 619         var promise = new cloudeebus.Promise();
 620         var resolver = promise.resolver;
 621         var fulfillWrapper, rejectWrapper;
 622
 623         if (fulfillCB)
 624                 fulfillWrapper = function(arg) {
 625                         try {
 626                                 var value = fulfillCB.apply(promise, [arg]);
 627                                 resolver.resolve(value, true);
 628                         }
 629                         catch (e) {
 630                                 resolver.reject(cloudeebus.getError(e), true);
 631                         }
 632                 };
 633         else
 634                 fulfillWrapper = function(arg) {
 635                         resolver.fulfill(arg, true);
 636                 };
 637
 638         if (rejectCB)
 639                 rejectWrapper = function(arg) {
 640                         try {
 641                                 var value = rejectCB.apply(promise, [arg]);
 642                                 resolver.resolve(value, true);
 643                         }
 644                         catch (e) {
 645                                 resolver.reject(cloudeebus.getError(e), true);
 646                         }
 647                 };
 648         else
 649                 rejectWrapper = function(arg) {
 650                         resolver.reject(arg, true);
 651                 };
 652
 653         this.appendWrappers(fulfillWrapper,rejectWrapper);
 654         return promise;
 655 };
 656
 657
 658 cloudeebus.Promise.prototype["catch"] = function(rejectCB) {
 659         return this.then(undefined,rejectCB);
 660 };
 661
 662
 663 cloudeebus.Promise.prototype.done = function(fulfillCB, rejectCB) {
 664         this.appendWrappers(fulfillCB,rejectCB);
 665 };
 666
 667
 668 cloudeebus.Promise.resolve = function(value) {
 669         var promise = new cloudeebus.Promise();
 670         promise.resolver.resolve(value);
 671         return promise;
 672 };
 673
 674
 675 cloudeebus.Promise.fulfill = function(value) {
 676         var promise = new cloudeebus.Promise();
 677         promise.resolver.fulfill(value);
 678         return promise;
 679 };
 680
 681
 682 cloudeebus.Promise.reject = function(value) {
 683         var promise = new cloudeebus.Promise();
 684         promise.resolver.reject(value);
 685         return promise;
 686 };
 687
 688
 689 cloudeebus.Promise.any = function() {
 690         var promise = new cloudeebus.Promise();
 691         var resolver = promise.resolver;
 692         var fulfillCallback = function(arg) {
 693                 resolver.resolve(arg, true);
 694         };
 695         var rejectCallback = function(arg) {
 696                 resolver.reject(arg, true);
 697         };
 698         if (arguments.length == 0)
 699                 resolver.resolve(undefined, true);
 700         else
 701                 for (i in arguments)
 702                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 703         return promise;
 704 };
 705
 706
 707 cloudeebus.Promise.every = function() {
 708         var promise = new cloudeebus.Promise();
 709         var resolver = promise.resolver;
 710         var index = 0;
 711         var countdown = arguments.length;
 712         var args = new Array(countdown);
 713         var rejectCallback = function(arg) {
 714                 resolver.reject(arg, true);
 715         };
 716         if (arguments.length == 0)
 717                 resolver.resolve(undefined, true);
 718         else
 719                 for (i in arguments) {
 720                         var fulfillCallback = function(arg) {
 721                                 args[index] = arg;
 722                                 countdown--;
 723                                 if (countdown == 0)
 724                                         resolver.resolve(args, true);
 725                         };
 726                         index++;
 727                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 728                 }
 729
 730         return promise;
 731 };
 732
 733
 734 cloudeebus.Promise.some = function() {
 735         var promise = new cloudeebus.Promise();
 736         var resolver = promise.resolver;
 737         var index = 0;
 738         var countdown = arguments.length;
 739         var args = new Array(countdown);
 740         var fulfillCallback = function(arg) {
 741                 resolver.resolve(arg, true);
 742         };
 743         if (arguments.length == 0)
 744                 resolver.resolve(undefined, true);
 745         else
 746                 for (i in arguments) {
 747                         var rejectCallback = function(arg) {
 748                                 args[index] = arg;
 749                                 countdown--;
 750                                 if (countdown == 0)
 751                                         resolver.reject(args, true);
 752                         };
 753                         index++;
 754                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 755                 }
 756
 757         return promise;
 758 };
 759
 760
 761
 762 /*****************************************************************************/
 763
 764 cloudeebus.ProxyObject = function(session, busConnection, busName, objectPath) {
 765         this.wampSession = session;
 766         this.busConnection = busConnection;
 767         this.busName = busName;
 768         this.objectPath = objectPath;
 769         this.interfaceProxies = {};
 770         return this;
 771 };
 772
 773
 774 cloudeebus.ProxyObject.prototype.getInterface = function(ifName) {
 775         return this.interfaceProxies[ifName];
 776 };
 777
 778
 779 cloudeebus.ProxyObject.prototype._introspect = function(successCB, errorCB) {
 780
 781         var self = this;
 782
 783         function getAllPropertiesSuccessCB(props) {
 784                 var ifProxy = self.interfaceProxies[self.propInterfaces[self.propInterfaces.length-1]];
 785                 for (var prop in props)
 786                         ifProxy[prop] = self[prop] = props[prop];
 787                 getAllPropertiesNextInterfaceCB();
 788         }
 789
 790         function getAllPropertiesNextInterfaceCB() {
 791                 self.propInterfaces.pop();
 792                 if (self.propInterfaces.length > 0)
 793                         self.callMethod("org.freedesktop.DBus.Properties",
 794                                 "GetAll",
 795                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 796                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 797                 else {
 798                         self.propInterfaces = null;
 799                         if (successCB)
 800                                 successCB(self);
 801                 }
 802         }
 803
 804         function introspectSuccessCB(str) {
 805                 var parser = new DOMParser();
 806                 var xmlDoc = parser.parseFromString(str, "text/xml");
 807                 var interfaces = xmlDoc.getElementsByTagName("interface");
 808                 self.propInterfaces = [];
 809                 var supportDBusProperties = false;
 810                 for (var i=0; i < interfaces.length; i++) {
 811                         var ifName = interfaces[i].attributes.getNamedItem("name").value;
 812                         self.interfaceProxies[ifName] = new cloudeebus.ProxyObject(self.wampSession, self.busConnection, self.busName, self.objectPath);
 813                         if (ifName == "org.freedesktop.DBus.Properties")
 814                                 supportDBusProperties = true;
 815                         var hasProperties = false;
 816                         var ifChild = interfaces[i].firstChild;
 817                         while (ifChild) {
 818                                 if (ifChild.nodeName == "method") {
 819                                         var nArgs = 0;
 820                                         var signature = "";
 821                                         var metChild = ifChild.firstChild;
 822                                         while (metChild) {
 823                                                 if (metChild.nodeName == "arg" &&
 824                                                         metChild.attributes.getNamedItem("direction").value == "in") {
 825                                                                 signature += metChild.attributes.getNamedItem("type").value;
 826                                                                 nArgs++;
 827                                                 }
 828                                                 metChild = metChild.nextSibling;
 829                                         }
 830                                         var metName = ifChild.attributes.getNamedItem("name").value;
 831                                         if (!self[metName])
 832                                                 self._addMethod(ifName, metName, nArgs, signature);
 833                                         self.interfaceProxies[ifName]._addMethod(ifName, metName, nArgs, signature);
 834                                 }
 835                                 else if (ifChild.nodeName == "property") {
 836                                         if (!hasProperties)
 837                                                 self.propInterfaces.push(ifName);
 838                                         hasProperties = true;
 839                                 }
 840                                 ifChild = ifChild.nextSibling;
 841                         }
 842                 }
 843                 if (supportDBusProperties && self.propInterfaces.length > 0) {
 844                         self.callMethod("org.freedesktop.DBus.Properties",
 845                                 "GetAll",
 846                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 847                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 848                 }
 849                 else {
 850                         self.propInterfaces = null;
 851                         if (successCB)
 852                                 successCB(self);
 853                 }
 854         }
 855
 856         // call Introspect on self
 857         self.callMethod("org.freedesktop.DBus.Introspectable", "Introspect", []).then(introspectSuccessCB, errorCB);
 858 };
 859
 860
 861 cloudeebus.ProxyObject.prototype._addMethod = function(ifName, method, nArgs, signature) {
 862
 863         var self = this;
 864
 865         self[method] = function() {
 866                 var args = [];
 867                 for (var i=0; i < nArgs; i++ )
 868                         args.push(arguments[i]);
 869                 return self.callMethod(ifName, method, args, signature);
 870         };
 871 };
 872
 873
 874 cloudeebus.ProxyObject.prototype.callMethod = function(ifName, method, args, signature) {
 875
 876         var self = this;
 877
 878         var promise = new cloudeebus.Promise(function (resolver) {
 879                 function callMethodSuccessCB(str) {
 880                         try { // calling dbus hook object function for un-translated types
 881                                 var result = eval(str);
 882                                 resolver.fulfill(result[0], true);
 883                         }
 884                         catch (e) {
 885                                 var errorStr = cloudeebus.getError(e);
 886                                 cloudeebus.log("Method callback exception: " + errorStr);
 887                                 resolver.reject(errorStr, true);
 888                         }
 889                 }
 890
 891                 function callMethodErrorCB(error) {
 892                         var errorStr = cloudeebus.getError(error);
 893                         cloudeebus.log("Error calling method: " + method + " on object: " + self.objectPath + " : " + errorStr);
 894                         resolver.reject(errorStr, true);
 895                 }
 896
 897                 var arglist = [
 898                         self.busConnection.name,
 899                         self.busName,
 900                         self.objectPath,
 901                         ifName,
 902                         method,
 903                         JSON.stringify(args)
 904                 ];
 905
 906                 // call dbusSend with bus type, destination, object, message and arguments
 907                 self.wampSession.call("dbusSend", arglist).then(callMethodSuccessCB, callMethodErrorCB);
 908         });
 909
 910         return promise;
 911 };
 912
 913
 914 cloudeebus.ProxyObject.prototype.connectToSignal = function(ifName, signal, handlerCB, errorCB) {
 915
 916         var self = this;
 917
 918         function signalHandler(id, data) {
 919                 if (handlerCB) {
 920                         try { // calling dbus hook object function for un-translated types
 921                                 handlerCB.apply(self, eval(data));
 922                         }
 923                         catch (e) {
 924                                 var errorStr = cloudeebus.getError(e);
 925                                 cloudeebus.log("Signal handler exception: " + errorStr);
 926                                 if (errorCB)
 927                                         errorCB(errorStr);
 928                         }
 929                 }
 930         }
 931
 932         function connectToSignalSuccessCB(str) {
 933                 try {
 934                         self.wampSession.subscribe(str, signalHandler);
 935                 }
 936                 catch (e) {
 937                         cloudeebus.log("Subscribe error: " + cloudeebus.getError(e));
 938                 }
 939         }
 940
 941         function connectToSignalErrorCB(error) {
 942                 var errorStr = cloudeebus.getError(error);
 943                 cloudeebus.log("Error connecting to signal: " + signal + " on object: " + self.objectPath + " : " + errorStr);
 944                 if (errorCB)
 945                         errorCB(cloudeebus.getError(errorStr));
 946         }
 947
 948         var arglist = [
 949                 self.busConnection.name,
 950                 self.busName,
 951                 self.objectPath,
 952                 ifName,
 953                 signal
 954         ];
 955
 956         // call dbusSend with bus type, destination, object, message and arguments
 957         self.wampSession.call("dbusRegister", arglist).then(connectToSignalSuccessCB, connectToSignalErrorCB);
 958 };
 959
 960
 961 cloudeebus.ProxyObject.prototype.disconnectSignal = function(ifName, signal) {
 962         try {
 963                 this.wampSession.unsubscribe(this.busConnection.name + "#" + this.busName + "#" + this.objectPath + "#" + ifName + "#" + signal);
 964         }
 965         catch (e) {
 966                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 967         }
 968 };