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 busServiceAddedSuccessCB(service) {
 172                   try {
 173                           service.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 busServiceErrorSuccessCB(error) {
 185                   resolver.reject(cloudeebus.getError(error), true);
 186           }
 187
 188           cloudeebusService.add(this).then(busServiceAddedSuccessCB, busServiceErrorSuccessCB);
 189         });
 190
 191         return promise;
 192 };
 193
 194 cloudeebus.BusConnection.prototype.removeService = function(serviceName, successCB, errorCB) {
 195         var self = this;
 196
 197         function busServiceRemovedSuccessCB(serviceName) {
 198                 // Be sure we are removing the service requested...
 199                 if (serviceName == self.service.name) {
 200                         self.service = null;
 201                         if (successCB)
 202                                 successCB(serviceName);
 203                 }
 204         }
 205
 206         cloudeebusService.remove(busServiceRemovedSuccessCB, errorCB);
 207 };
 208
 209
 210 /*****************************************************************************/
 211 //Generic definition for an agent. An agent need :
 212 //srvDbusName : the DBus parent service
 213 //objPath : a DBus path to access it
 214 //jsHdl : a Javascript handler to process methods,
 215 //xml : the xml which describe interface/methods/signals...
 216 Agent = function(srvDbusName, objPath, jsHdl, xml) {
 217         this.srvName = srvDbusName;
 218         this.registered = false;
 219         this.xml = xml;
 220         this.objectPath = objPath;
 221         this.jsHdl = jsHdl;
 222         return this;
 223 };
 224
 225
 226 cloudeebus.Service = function(session, busConnection, name) {
 227         this.wampSession = session;
 228         this.busConnection = busConnection;
 229         this.name = name;
 230         this.isCreated = false;
 231         return this;
 232 };
 233
 234 cloudeebus.Service.prototype.add = function(promise) {
 235         var self = this;
 236         self.promise = promise;
 237         var resolver = self.promise.resolver;
 238
 239         function ServiceAddedSuccessCB(serviceName) {
 240                 try { // calling dbus hook object function for un-translated types
 241                         var result = [self];
 242                         resolver.fulfill(result[0], true);
 243                 }
 244                 catch (e) {
 245                         var errorStr = cloudeebus.getError(e);
 246                         cloudeebus.log("Method callback exception: " + errorStr);
 247                         resolver.reject(errorStr, true);
 248                 }
 249         }
 250
 251         function ServiceAddedErrorCB(error) {
 252                 var errorStr = cloudeebus.getError(error);
 253                 cloudeebus.log("Error adding service method: " + self.name + ", error: " + errorStr);
 254                 self.promise.resolver.reject(errorStr, true);
 255         }
 256
 257         var arglist = [
 258             this.busConnection,
 259             this.name
 260             ];
 261
 262         // call dbusSend with bus type, destination, object, message and arguments
 263         this.wampSession.call("serviceAdd", arglist).then(ServiceAddedSuccessCB, ServiceAddedErrorCB);
 264         return promise;
 265 };
 266
 267 cloudeebus.Service.prototype.remove = function(successCB, errorCB) {
 268         function ServiceRemovedSuccessCB(serviceName) {
 269                 if (successCB) {
 270                         try {
 271                                 successCB(serviceName);
 272                         }
 273                         catch (e) {
 274                                 alert("Exception removing service " + serviceName + " : " + cloudeebus.getError(e));
 275                         }
 276                 }
 277         }
 278
 279         var arglist = [
 280             this.name
 281             ];
 282
 283         // call dbusSend with bus type, destination, object, message and arguments
 284         this.wampSession.call("serviceRelease", arglist).then(ServiceRemovedSuccessCB, errorCB);
 285 };
 286
 287 cloudeebus.Service.prototype._searchMethod = function(ifName, method, objectJS) {
 288
 289         var funcToCall = null;
 290
 291         // Check if 'objectJS' has a member 'interfaceProxies' with an interface named 'ifName'
 292         // and a method named 'method'
 293         if (objectJS.interfaceProxies && objectJS.interfaceProxies[ifName] &&
 294                 objectJS.interfaceProxies[ifName][method]) {
 295                 funcToCall = objectJS.interfaceProxies[ifName][method];
 296         } else {
 297                 // retrieve the method directly from 'root' of objectJs
 298                 funcToCall = objectJS[method];
 299         }
 300
 301         return funcToCall;
 302 };
 303
 304 cloudeebus.Service.prototype._addMethod = function(ifName, method, agent) {
 305
 306         var service = this;
 307         var methodId = this.name + "#" + agent.objectPath + "#" + ifName + "#" + method;
 308         var funcToCall = this._searchMethod(ifName, method, agent.jsHdl);
 309
 310         if (funcToCall == null)
 311                 cloudeebus.log("Method " + method + " doesn't exist in Javascript object");
 312         else {
 313                 agent.jsHdl.wrapperFunc[method] = function() {
 314                         var result;
 315                         var methodId = arguments[0];
 316                         var callDict = {};
 317                         // affectation of callDict in eval, otherwise dictionary(='{}') interpreted as block of code by eval
 318                         eval("callDict = " + arguments[1]);
 319                         try {
 320                                 result = funcToCall.apply(agent.jsHdl, callDict.args);
 321                                 service._returnMethod(methodId, callDict.callIndex, true, result);
 322                         }
 323                         catch (e) {
 324                                 var errorStr = cloudeebus.getError(e);
 325                                 cloudeebus.log("Method " + ifName + "." + method + " call on " + agent.objectPath + " exception: " + errorStr);
 326                                 service._returnMethod(methodId, callDict.callIndex, false, errorStr);
 327                         }
 328                 };
 329                 agent.jsHdl.methodId[agent.objectPath].push(methodId);
 330                 cloudeebus.log("subscribe " + methodId);
 331                 this.wampSession.subscribe(methodId, agent.jsHdl.wrapperFunc[method]);
 332         }
 333 };
 334
 335 cloudeebus.Service.prototype._addSignal = function(ifName, signal, agent) {
 336         var service = this;
 337         var methodExist = false;
 338
 339         if (agent.jsHdl.interfaceProxies && agent.jsHdl.interfaceProxies[ifName])
 340                 if (agent.jsHdl.interfaceProxies[ifName][signal]) {
 341                         methodExist = true;
 342                 } else {
 343                         agent.jsHdl.interfaceProxies[ifName][signal] = function() {
 344                                 service._emitSignal(agent.objectPath, signal, arguments[0]);
 345                         };
 346                 return;
 347         }
 348
 349         if ((agent.jsHdl[signal] == undefined || agent.jsHdl[signal] == null) && !methodExist)
 350                 agent.jsHdl[signal] = function() {
 351                         service.emitSignal(agent.objectPath, signal, arguments[0]);
 352                 };
 353         else
 354                 cloudeebus.log("Can not create new method to emit signal '" + signal + "' in object JS this method already exist!");
 355 };
 356
 357 cloudeebus.Service.prototype._createWrapper = function(agent) {
 358         var self = this;
 359         var parser = new DOMParser();
 360         var xmlDoc = parser.parseFromString(agent.xml, "text/xml");
 361         var ifXml = xmlDoc.getElementsByTagName("interface");
 362         agent.jsHdl.wrapperFunc = [];
 363         agent.jsHdl.methodId = [];
 364         agent.jsHdl.methodId[agent.objectPath] = [];
 365         for (var i=0; i < ifXml.length; i++) {
 366                 var ifName = ifXml[i].attributes.getNamedItem("name").value;
 367                 var ifChild = ifXml[i].firstChild;
 368                 while (ifChild) {
 369                         if (ifChild.nodeName == "method") {
 370                                 var metName = ifChild.attributes.getNamedItem("name").value;
 371                                 self._addMethod(ifName, metName, agent);
 372                         }
 373                         if (ifChild.nodeName == "signal") {
 374                                 var metName = ifChild.attributes.getNamedItem("name").value;
 375                                 self._addSignal(objectPath, ifName, metName, objectJS);
 376                         }
 377                         ifChild = ifChild.nextSibling;
 378                 }
 379         }
 380 };
 381
 382 cloudeebus.Service.prototype.addAgent = function(agent, successCB, errorCB) {
 383         function ServiceAddAgentSuccessCB(objPath) {
 384                 if (successCB) {
 385                         try {
 386                                 successCB(objPath);
 387                         }
 388                         catch (e) {
 389                                 alert("Exception adding agent " + agent.objectPath + " : " + cloudeebus.getError(e));
 390                         }
 391                 }
 392         }
 393
 394         try {
 395                 this._createWrapper(agent);
 396         }
 397         catch (e) {
 398                 var errorStr = cloudeebus.getError(e);
 399                 alert("Exception creating agent wrapper " + agent.objectPath + " : " + errorStr);
 400                 errorCB(errorStr);
 401                 return;
 402         }
 403
 404         var arglist = [
 405             agent.objectPath,
 406             agent.xml
 407             ];
 408
 409         // call dbusSend with bus type, destination, object, message and arguments
 410         this.wampSession.call("serviceAddAgent", arglist).then(ServiceAddAgentSuccessCB, errorCB);
 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 cloudeebus.Service.prototype.delAgent = function(rmAgent, successCB, errorCB) {
 431         function ServiceDelAgentSuccessCB(agent) {
 432                 if (successCB) {
 433                         try {
 434                                 successCB(agent);
 435                         }
 436                         catch (e) {
 437                                 var errorStr = cloudeebus.getError(e);
 438                                 alert("Exception deleting agent " + rmAgent.objectPath + " : " + errorStr);
 439                                 errorCB(errorStr);
 440                         }
 441                 }
 442         }
 443
 444         try {
 445                 this._deleteWrapper(rmAgent);
 446         }
 447         catch (e) {
 448                 var errorStr = cloudeebus.getError(e);
 449                 alert("Exception deleting agent wrapper " + rmAgent.objectPath + " : " + errorStr);
 450                 errorCB(errorStr);
 451         }
 452
 453         var arglist = [
 454             rmAgent.objectPath
 455             ];
 456
 457         // call dbusSend with bus type, destination, object, message and arguments
 458         this.wampSession.call("serviceDelAgent", arglist).then(ServiceDelAgentSuccessCB, errorCB);
 459 };
 460
 461 cloudeebus.Service.prototype._returnMethod = function(methodId, callIndex, success, result, successCB, errorCB) {
 462         var arglist = [
 463             methodId,
 464             callIndex,
 465             success,
 466             result
 467             ];
 468
 469         this.wampSession.call("returnMethod", arglist).then(successCB, errorCB);
 470 };
 471
 472 cloudeebus.Service.prototype._emitSignal = function(objectPath, signalName, result, successCB, errorCB) {
 473         var arglist = [
 474             objectPath,
 475             signalName,
 476             result
 477             ];
 478
 479         this.wampSession.call("emitSignal", arglist).then(successCB, errorCB);
 480 };
 481
 482
 483
 484 /*****************************************************************************/
 485
 486 function _processWrappers(wrappers, value) {
 487         for (var i=0; i<wrappers.length; i++)
 488                 wrappers[i](value);
 489 }
 490
 491
 492 function _processWrappersAsync(wrappers, value) {
 493         var taskid = -1;
 494         function processAsyncOnce() {
 495                 _processWrappers(wrappers, value);
 496                 clearInterval(taskid);
 497         }
 498         taskid = setInterval(processAsyncOnce, 200);
 499 }
 500
 501
 502
 503 /*****************************************************************************/
 504
 505 cloudeebus.PromiseResolver = function(promise) {
 506         this.promise = promise;
 507         this.resolved = null;
 508     return this;
 509 };
 510
 511
 512 cloudeebus.PromiseResolver.prototype.resolve = function(value, sync) {
 513         if (this.resolved)
 514                 return;
 515
 516         var then = (value && value.then && value.then.apply) ? value.then : null;
 517         if (then) {
 518                 var self = this;
 519                 var fulfillCallback = function(arg) {
 520                         self.resolve(arg, true);
 521                 };
 522                 var rejectCallback = function(arg) {
 523                         self.reject(arg, true);
 524                 };
 525                 try {
 526                         then.apply(value, [fulfillCallback, rejectCallback]);
 527                 }
 528                 catch (e) {
 529                         this.reject(cloudeebus.getError(e), true);
 530                 }
 531         }
 532
 533         this.fulfill(value, sync);
 534 };
 535
 536
 537 cloudeebus.PromiseResolver.prototype.fulfill = function(value, sync) {
 538         if (this.resolved)
 539                 return;
 540
 541         var promise = this.promise;
 542         promise.state = "fulfilled";
 543         promise.result = value;
 544
 545         this.resolved = true;
 546         if (sync)
 547                 _processWrappers(promise._fulfillWrappers, value);
 548         else
 549                 _processWrappersAsync(promise._fulfillWrappers, value);
 550 };
 551
 552
 553 cloudeebus.PromiseResolver.prototype.reject = function(value, sync) {
 554         if (this.resolved)
 555                 return;
 556
 557         var promise = this.promise;
 558         promise.state = "rejected";
 559         promise.result = value;
 560
 561         this.resolved = true;
 562         if (sync)
 563                 _processWrappers(promise._rejectWrappers, value);
 564         else
 565                 _processWrappersAsync(promise._rejectWrappers, value);
 566 };
 567
 568
 569
 570 /*****************************************************************************/
 571
 572 cloudeebus.Promise = function(init) {
 573         this.state = "pending";
 574         this.result = null;
 575         this._fulfillWrappers = [];
 576         this._rejectWrappers = [];
 577         this.resolver = new cloudeebus.PromiseResolver(this);
 578         if (init) {
 579                 try {
 580                         init.apply(this, [this.resolver]);
 581                 }
 582                 catch (e) {
 583                         this.resolver.reject(cloudeebus.getError(e), true);
 584                 }
 585         }
 586     return this;
 587 };
 588
 589
 590 cloudeebus.Promise.prototype.appendWrappers = function(fulfillWrapper, rejectWrapper) {
 591         if (fulfillWrapper)
 592                 this._fulfillWrappers.push(fulfillWrapper);
 593         if (rejectWrapper)
 594                 this._rejectWrappers.push(rejectWrapper);
 595         if (this.state == "fulfilled")
 596                 _processWrappersAsync(this._fulfillWrappers, this.result);
 597         if (this.state == "rejected")
 598                 _processWrappersAsync(this._rejectWrappers, this.result);
 599 };
 600
 601
 602 cloudeebus.Promise.prototype.then = function(fulfillCB, rejectCB) {
 603         var promise = new cloudeebus.Promise();
 604         var resolver = promise.resolver;
 605         var fulfillWrapper, rejectWrapper;
 606
 607         if (fulfillCB)
 608                 fulfillWrapper = function(arg) {
 609                         try {
 610                                 var value = fulfillCB.apply(promise, [arg]);
 611                                 resolver.resolve(value, true);
 612                         }
 613                         catch (e) {
 614                                 resolver.reject(cloudeebus.getError(e), true);
 615                         }
 616                 };
 617         else
 618                 fulfillWrapper = function(arg) {
 619                         resolver.fulfill(arg, true);
 620                 };
 621
 622         if (rejectCB)
 623                 rejectWrapper = function(arg) {
 624                         try {
 625                                 var value = rejectCB.apply(promise, [arg]);
 626                                 resolver.resolve(value, true);
 627                         }
 628                         catch (e) {
 629                                 resolver.reject(cloudeebus.getError(e), true);
 630                         }
 631                 };
 632         else
 633                 rejectWrapper = function(arg) {
 634                         resolver.reject(arg, true);
 635                 };
 636
 637         this.appendWrappers(fulfillWrapper,rejectWrapper);
 638         return promise;
 639 };
 640
 641
 642 cloudeebus.Promise.prototype["catch"] = function(rejectCB) {
 643         return this.then(undefined,rejectCB);
 644 };
 645
 646
 647 cloudeebus.Promise.prototype.done = function(fulfillCB, rejectCB) {
 648         this.appendWrappers(fulfillCB,rejectCB);
 649 };
 650
 651
 652 cloudeebus.Promise.resolve = function(value) {
 653         var promise = new cloudeebus.Promise();
 654         promise.resolver.resolve(value);
 655         return promise;
 656 };
 657
 658
 659 cloudeebus.Promise.fulfill = function(value) {
 660         var promise = new cloudeebus.Promise();
 661         promise.resolver.fulfill(value);
 662         return promise;
 663 };
 664
 665
 666 cloudeebus.Promise.reject = function(value) {
 667         var promise = new cloudeebus.Promise();
 668         promise.resolver.reject(value);
 669         return promise;
 670 };
 671
 672
 673 cloudeebus.Promise.any = function() {
 674         var promise = new cloudeebus.Promise();
 675         var resolver = promise.resolver;
 676         var fulfillCallback = function(arg) {
 677                 resolver.resolve(arg, true);
 678         };
 679         var rejectCallback = function(arg) {
 680                 resolver.reject(arg, true);
 681         };
 682         if (arguments.length == 0)
 683                 resolver.resolve(undefined, true);
 684         else
 685                 for (i in arguments)
 686                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 687         return promise;
 688 };
 689
 690
 691 cloudeebus.Promise.every = function() {
 692         var promise = new cloudeebus.Promise();
 693         var resolver = promise.resolver;
 694         var index = 0;
 695         var countdown = arguments.length;
 696         var args = new Array(countdown);
 697         var rejectCallback = function(arg) {
 698                 resolver.reject(arg, true);
 699         };
 700         if (arguments.length == 0)
 701                 resolver.resolve(undefined, true);
 702         else
 703                 for (i in arguments) {
 704                         var fulfillCallback = function(arg) {
 705                                 args[index] = arg;
 706                                 countdown--;
 707                                 if (countdown == 0)
 708                                         resolver.resolve(args, true);
 709                         };
 710                         index++;
 711                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 712                 }
 713
 714         return promise;
 715 };
 716
 717
 718 cloudeebus.Promise.some = function() {
 719         var promise = new cloudeebus.Promise();
 720         var resolver = promise.resolver;
 721         var index = 0;
 722         var countdown = arguments.length;
 723         var args = new Array(countdown);
 724         var fulfillCallback = function(arg) {
 725                 resolver.resolve(arg, true);
 726         };
 727         if (arguments.length == 0)
 728                 resolver.resolve(undefined, true);
 729         else
 730                 for (i in arguments) {
 731                         var rejectCallback = function(arg) {
 732                                 args[index] = arg;
 733                                 countdown--;
 734                                 if (countdown == 0)
 735                                         resolver.reject(args, true);
 736                         };
 737                         index++;
 738                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 739                 }
 740
 741         return promise;
 742 };
 743
 744
 745
 746 /*****************************************************************************/
 747
 748 cloudeebus.ProxyObject = function(session, busConnection, busName, objectPath) {
 749         this.wampSession = session;
 750         this.busConnection = busConnection;
 751         this.busName = busName;
 752         this.objectPath = objectPath;
 753         this.interfaceProxies = {};
 754         return this;
 755 };
 756
 757
 758 cloudeebus.ProxyObject.prototype.getInterface = function(ifName) {
 759         return this.interfaceProxies[ifName];
 760 };
 761
 762
 763 cloudeebus.ProxyObject.prototype._introspect = function(successCB, errorCB) {
 764
 765         var self = this;
 766
 767         function getAllPropertiesSuccessCB(props) {
 768                 var ifProxy = self.interfaceProxies[self.propInterfaces[self.propInterfaces.length-1]];
 769                 for (var prop in props)
 770                         ifProxy[prop] = self[prop] = props[prop];
 771                 getAllPropertiesNextInterfaceCB();
 772         }
 773
 774         function getAllPropertiesNextInterfaceCB() {
 775                 self.propInterfaces.pop();
 776                 if (self.propInterfaces.length > 0)
 777                         self.callMethod("org.freedesktop.DBus.Properties",
 778                                 "GetAll",
 779                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 780                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 781                 else {
 782                         self.propInterfaces = null;
 783                         if (successCB)
 784                                 successCB(self);
 785                 }
 786         }
 787
 788         function introspectSuccessCB(str) {
 789                 var parser = new DOMParser();
 790                 var xmlDoc = parser.parseFromString(str, "text/xml");
 791                 var interfaces = xmlDoc.getElementsByTagName("interface");
 792                 self.propInterfaces = [];
 793                 var supportDBusProperties = false;
 794                 for (var i=0; i < interfaces.length; i++) {
 795                         var ifName = interfaces[i].attributes.getNamedItem("name").value;
 796                         self.interfaceProxies[ifName] = new cloudeebus.ProxyObject(self.wampSession, self.busConnection, self.busName, self.objectPath);
 797                         if (ifName == "org.freedesktop.DBus.Properties")
 798                                 supportDBusProperties = true;
 799                         var hasProperties = false;
 800                         var ifChild = interfaces[i].firstChild;
 801                         while (ifChild) {
 802                                 if (ifChild.nodeName == "method") {
 803                                         var nArgs = 0;
 804                                         var signature = "";
 805                                         var metChild = ifChild.firstChild;
 806                                         while (metChild) {
 807                                                 if (metChild.nodeName == "arg" &&
 808                                                         metChild.attributes.getNamedItem("direction").value == "in") {
 809                                                                 signature += metChild.attributes.getNamedItem("type").value;
 810                                                                 nArgs++;
 811                                                 }
 812                                                 metChild = metChild.nextSibling;
 813                                         }
 814                                         var metName = ifChild.attributes.getNamedItem("name").value;
 815                                         if (!self[metName])
 816                                                 self._addMethod(ifName, metName, nArgs, signature);
 817                                         self.interfaceProxies[ifName]._addMethod(ifName, metName, nArgs, signature);
 818                                 }
 819                                 else if (ifChild.nodeName == "property") {
 820                                         if (!hasProperties)
 821                                                 self.propInterfaces.push(ifName);
 822                                         hasProperties = true;
 823                                 }
 824                                 ifChild = ifChild.nextSibling;
 825                         }
 826                 }
 827                 if (supportDBusProperties && self.propInterfaces.length > 0) {
 828                         self.callMethod("org.freedesktop.DBus.Properties",
 829                                 "GetAll",
 830                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 831                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 832                 }
 833                 else {
 834                         self.propInterfaces = null;
 835                         if (successCB)
 836                                 successCB(self);
 837                 }
 838         }
 839
 840         // call Introspect on self
 841         self.callMethod("org.freedesktop.DBus.Introspectable", "Introspect", []).then(introspectSuccessCB, errorCB);
 842 };
 843
 844
 845 cloudeebus.ProxyObject.prototype._addMethod = function(ifName, method, nArgs, signature) {
 846
 847         var self = this;
 848
 849         self[method] = function() {
 850                 var args = [];
 851                 for (var i=0; i < nArgs; i++ )
 852                         args.push(arguments[i]);
 853                 return self.callMethod(ifName, method, args, signature);
 854         };
 855 };
 856
 857
 858 cloudeebus.ProxyObject.prototype.callMethod = function(ifName, method, args, signature) {
 859
 860         var self = this;
 861
 862         var promise = new cloudeebus.Promise(function (resolver) {
 863                 function callMethodSuccessCB(str) {
 864                         try { // calling dbus hook object function for un-translated types
 865                                 var result = eval(str);
 866                                 resolver.fulfill(result[0], true);
 867                         }
 868                         catch (e) {
 869                                 var errorStr = cloudeebus.getError(e);
 870                                 cloudeebus.log("Method callback exception: " + errorStr);
 871                                 resolver.reject(errorStr, true);
 872                         }
 873                 }
 874
 875                 function callMethodErrorCB(error) {
 876                         var errorStr = cloudeebus.getError(error);
 877                         cloudeebus.log("Error calling method: " + method + " on object: " + self.objectPath + " : " + errorStr);
 878                         resolver.reject(errorStr, true);
 879                 }
 880
 881                 var arglist = [
 882                         self.busConnection.name,
 883                         self.busName,
 884                         self.objectPath,
 885                         ifName,
 886                         method,
 887                         JSON.stringify(args)
 888                 ];
 889
 890                 // call dbusSend with bus type, destination, object, message and arguments
 891                 self.wampSession.call("dbusSend", arglist).then(callMethodSuccessCB, callMethodErrorCB);
 892         });
 893
 894         return promise;
 895 };
 896
 897
 898 cloudeebus.ProxyObject.prototype.connectToSignal = function(ifName, signal, handlerCB, errorCB) {
 899
 900         var self = this;
 901
 902         function signalHandler(id, data) {
 903                 if (handlerCB) {
 904                         try { // calling dbus hook object function for un-translated types
 905                                 handlerCB.apply(self, eval(data));
 906                         }
 907                         catch (e) {
 908                                 var errorStr = cloudeebus.getError(e);
 909                                 cloudeebus.log("Signal handler exception: " + errorStr);
 910                                 if (errorCB)
 911                                         errorCB(errorStr);
 912                         }
 913                 }
 914         }
 915
 916         function connectToSignalSuccessCB(str) {
 917                 try {
 918                         self.wampSession.subscribe(str, signalHandler);
 919                 }
 920                 catch (e) {
 921                         cloudeebus.log("Subscribe error: " + cloudeebus.getError(e));
 922                 }
 923         }
 924
 925         function connectToSignalErrorCB(error) {
 926                 var errorStr = cloudeebus.getError(error);
 927                 cloudeebus.log("Error connecting to signal: " + signal + " on object: " + self.objectPath + " : " + errorStr);
 928                 if (errorCB)
 929                         errorCB(cloudeebus.getError(errorStr));
 930         }
 931
 932         var arglist = [
 933                 self.busConnection.name,
 934                 self.busName,
 935                 self.objectPath,
 936                 ifName,
 937                 signal
 938         ];
 939
 940         // call dbusSend with bus type, destination, object, message and arguments
 941         self.wampSession.call("dbusRegister", arglist).then(connectToSignalSuccessCB, connectToSignalErrorCB);
 942 };
 943
 944
 945 cloudeebus.ProxyObject.prototype.disconnectSignal = function(ifName, signal) {
 946         try {
 947                 this.wampSession.unsubscribe(this.busConnection.name + "#" + this.busName + "#" + this.objectPath + "#" + ifName + "#" + signal);
 948         }
 949         catch (e) {
 950                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 951         }
 952 };