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   1  // This file is part of Moodle - http://moodle.org/
   2  //
   3  // Moodle is free software: you can redistribute it and/or modify
   4  // it under the terms of the GNU General Public License as published by
   5  // the Free Software Foundation, either version 3 of the License, or
   6  // (at your option) any later version.
   7  //
   8  // Moodle is distributed in the hope that it will be useful,
   9  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  // GNU General Public License for more details.
  12  //
  13  // You should have received a copy of the GNU General Public License
  14  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  15  
  16  //
  17  // SCORM 1.2 API Implementation
  18  //
  19  function SCORMapi1_2(def, cmiobj, cmiint, cmistring256, cmistring4096, scormdebugging, scormauto, scormid, cfgwwwroot, sesskey, scoid, attempt, viewmode, cmid, currentorg, autocommit, masteryoverride) {
  20  
  21      var prerequrl = cfgwwwroot + "/mod/scorm/prereqs.php?a=" + scormid + "&scoid=" + scoid + "&attempt=" + attempt + "&mode=" + viewmode + "&currentorg=" + currentorg + "&sesskey=" + sesskey;
  22      var datamodelurl = cfgwwwroot + "/mod/scorm/datamodel.php";
  23      var datamodelurlparams = "id=" + cmid + "&a=" + scormid + "&sesskey=" + sesskey + "&attempt=" + attempt + "&scoid=" + scoid;
  24  
  25      // Standard Data Type Definition
  26      CMIString256 = cmistring256;
  27      CMIString4096 = cmistring4096;
  28      CMITime = '^([0-2]{1}[0-9]{1}):([0-5]{1}[0-9]{1}):([0-5]{1}[0-9]{1})(\.[0-9]{1,2})?$';
  29      CMITimespan = '^([0-9]{2,4}):([0-9]{2}):([0-9]{2})(\.[0-9]{1,2})?$';
  30      CMIInteger = '^\\d+$';
  31      CMISInteger = '^-?([0-9]+)$';
  32      CMIDecimal = '^-?([0-9]{0,3})(\.[0-9]*)?$';
  33      CMIIdentifier = '^[\\u0021-\\u007E]{0,255}$';
  34      CMIFeedback = CMIString256; // This must be redefined
  35      CMIIndex = '[._](\\d+).';
  36      // Vocabulary Data Type Definition
  37      CMIStatus = '^passed$|^completed$|^failed$|^incomplete$|^browsed$';
  38      CMIStatus2 = '^passed$|^completed$|^failed$|^incomplete$|^browsed$|^not attempted$';
  39      CMIExit = '^time-out$|^suspend$|^logout$|^$';
  40      CMIType = '^true-false$|^choice$|^fill-in$|^matching$|^performance$|^sequencing$|^likert$|^numeric$';
  41      CMIResult = '^correct$|^wrong$|^unanticipated$|^neutral$|^([0-9]{0,3})?(\.[0-9]*)?$';
  42      NAVEvent = '^previous$|^continue$';
  43      // Children lists
  44      cmi_children = 'core,suspend_data,launch_data,comments,objectives,student_data,student_preference,interactions';
  45      core_children = 'student_id,student_name,lesson_location,credit,lesson_status,entry,score,total_time,lesson_mode,exit,session_time';
  46      score_children = 'raw,min,max';
  47      comments_children = 'content,location,time';
  48      objectives_children = 'id,score,status';
  49      correct_responses_children = 'pattern';
  50      student_data_children = 'mastery_score,max_time_allowed,time_limit_action';
  51      student_preference_children = 'audio,language,speed,text';
  52      interactions_children = 'id,objectives,time,type,correct_responses,weighting,student_response,result,latency';
  53      // Data ranges
  54      score_range = '0#100';
  55      audio_range = '-1#100';
  56      speed_range = '-100#100';
  57      weighting_range = '-100#100';
  58      text_range = '-1#1';
  59  
  60      // The SCORM 1.2 data model
  61      // Set up data model for each sco
  62      var datamodel = {};
  63      for(scoid in def){
  64          datamodel[scoid] = {
  65              'cmi._children':{'defaultvalue':cmi_children, 'mod':'r', 'writeerror':'402'},
  66              'cmi._version':{'defaultvalue':'3.4', 'mod':'r', 'writeerror':'402'},
  67              'cmi.core._children':{'defaultvalue':core_children, 'mod':'r', 'writeerror':'402'},
  68              'cmi.core.student_id':{'defaultvalue':def[scoid]['cmi.core.student_id'], 'mod':'r', 'writeerror':'403'},
  69              'cmi.core.student_name':{'defaultvalue':def[scoid]['cmi.core.student_name'], 'mod':'r', 'writeerror':'403'},
  70              'cmi.core.lesson_location':{'defaultvalue':def[scoid]['cmi.core.lesson_location'], 'format':CMIString256, 'mod':'rw', 'writeerror':'405'},
  71              'cmi.core.credit':{'defaultvalue':def[scoid]['cmi.core.credit'], 'mod':'r', 'writeerror':'403'},
  72              'cmi.core.lesson_status':{'defaultvalue':def[scoid]['cmi.core.lesson_status'], 'format':CMIStatus, 'mod':'rw', 'writeerror':'405'},
  73              'cmi.core.entry':{'defaultvalue':def[scoid]['cmi.core.entry'], 'mod':'r', 'writeerror':'403'},
  74              'cmi.core.score._children':{'defaultvalue':score_children, 'mod':'r', 'writeerror':'402'},
  75              'cmi.core.score.raw':{'defaultvalue':def[scoid]['cmi.core.score.raw'], 'format':CMIDecimal, 'range':score_range, 'mod':'rw', 'writeerror':'405'},
  76              'cmi.core.score.max':{'defaultvalue':def[scoid]['cmi.core.score.max'], 'format':CMIDecimal, 'range':score_range, 'mod':'rw', 'writeerror':'405'},
  77              'cmi.core.score.min':{'defaultvalue':def[scoid]['cmi.core.score.min'], 'format':CMIDecimal, 'range':score_range, 'mod':'rw', 'writeerror':'405'},
  78              'cmi.core.total_time':{'defaultvalue':def[scoid]['cmi.core.total_time'], 'mod':'r', 'writeerror':'403'},
  79              'cmi.core.lesson_mode':{'defaultvalue':def[scoid]['cmi.core.lesson_mode'], 'mod':'r', 'writeerror':'403'},
  80              'cmi.core.exit':{'defaultvalue':def[scoid]['cmi.core.exit'], 'format':CMIExit, 'mod':'w', 'readerror':'404', 'writeerror':'405'},
  81              'cmi.core.session_time':{'format':CMITimespan, 'mod':'w', 'defaultvalue':'00:00:00', 'readerror':'404', 'writeerror':'405'},
  82              'cmi.suspend_data':{'defaultvalue':def[scoid]['cmi.suspend_data'], 'format':CMIString4096, 'mod':'rw', 'writeerror':'405'},
  83              'cmi.launch_data':{'defaultvalue':def[scoid]['cmi.launch_data'], 'mod':'r', 'writeerror':'403'},
  84              'cmi.comments':{'defaultvalue':def[scoid]['cmi.comments'], 'format':CMIString4096, 'mod':'rw', 'writeerror':'405'},
  85              // deprecated evaluation attributes
  86              'cmi.evaluation.comments._count':{'defaultvalue':'0', 'mod':'r', 'writeerror':'402'},
  87              'cmi.evaluation.comments._children':{'defaultvalue':comments_children, 'mod':'r', 'writeerror':'402'},
  88              'cmi.evaluation.comments.n.content':{'defaultvalue':'', 'pattern':CMIIndex, 'format':CMIString256, 'mod':'rw', 'writeerror':'405'},
  89              'cmi.evaluation.comments.n.location':{'defaultvalue':'', 'pattern':CMIIndex, 'format':CMIString256, 'mod':'rw', 'writeerror':'405'},
  90              'cmi.evaluation.comments.n.time':{'defaultvalue':'', 'pattern':CMIIndex, 'format':CMITime, 'mod':'rw', 'writeerror':'405'},
  91              'cmi.comments_from_lms':{'mod':'r', 'writeerror':'403'},
  92              'cmi.objectives._children':{'defaultvalue':objectives_children, 'mod':'r', 'writeerror':'402'},
  93              'cmi.objectives._count':{'mod':'r', 'defaultvalue':'0', 'writeerror':'402'},
  94              'cmi.objectives.n.id':{'pattern':CMIIndex, 'format':CMIIdentifier, 'mod':'rw', 'writeerror':'405'},
  95              'cmi.objectives.n.score._children':{'pattern':CMIIndex, 'mod':'r', 'writeerror':'402'},
  96              'cmi.objectives.n.score.raw':{'defaultvalue':'', 'pattern':CMIIndex, 'format':CMIDecimal, 'range':score_range, 'mod':'rw', 'writeerror':'405'},
  97              'cmi.objectives.n.score.min':{'defaultvalue':'', 'pattern':CMIIndex, 'format':CMIDecimal, 'range':score_range, 'mod':'rw', 'writeerror':'405'},
  98              'cmi.objectives.n.score.max':{'defaultvalue':'', 'pattern':CMIIndex, 'format':CMIDecimal, 'range':score_range, 'mod':'rw', 'writeerror':'405'},
  99              'cmi.objectives.n.status':{'pattern':CMIIndex, 'format':CMIStatus2, 'mod':'rw', 'writeerror':'405'},
 100              'cmi.student_data._children':{'defaultvalue':student_data_children, 'mod':'r', 'writeerror':'402'},
 101              'cmi.student_data.mastery_score':{'defaultvalue':def[scoid]['cmi.student_data.mastery_score'], 'mod':'r', 'writeerror':'403'},
 102              'cmi.student_data.max_time_allowed':{'defaultvalue':def[scoid]['cmi.student_data.max_time_allowed'], 'mod':'r', 'writeerror':'403'},
 103              'cmi.student_data.time_limit_action':{'defaultvalue':def[scoid]['cmi.student_data.time_limit_action'], 'mod':'r', 'writeerror':'403'},
 104              'cmi.student_preference._children':{'defaultvalue':student_preference_children, 'mod':'r', 'writeerror':'402'},
 105              'cmi.student_preference.audio':{'defaultvalue':def[scoid]['cmi.student_preference.audio'], 'format':CMISInteger, 'range':audio_range, 'mod':'rw', 'writeerror':'405'},
 106              'cmi.student_preference.language':{'defaultvalue':def[scoid]['cmi.student_preference.language'], 'format':CMIString256, 'mod':'rw', 'writeerror':'405'},
 107              'cmi.student_preference.speed':{'defaultvalue':def[scoid]['cmi.student_preference.speed'], 'format':CMISInteger, 'range':speed_range, 'mod':'rw', 'writeerror':'405'},
 108              'cmi.student_preference.text':{'defaultvalue':def[scoid]['cmi.student_preference.text'], 'format':CMISInteger, 'range':text_range, 'mod':'rw', 'writeerror':'405'},
 109              'cmi.interactions._children':{'defaultvalue':interactions_children, 'mod':'r', 'writeerror':'402'},
 110              'cmi.interactions._count':{'mod':'r', 'defaultvalue':'0', 'writeerror':'402'},
 111              'cmi.interactions.n.id':{'pattern':CMIIndex, 'format':CMIIdentifier, 'mod':'w', 'readerror':'404', 'writeerror':'405'},
 112              'cmi.interactions.n.objectives._count':{'pattern':CMIIndex, 'mod':'r', 'defaultvalue':'0', 'writeerror':'402'},
 113              'cmi.interactions.n.objectives.n.id':{'pattern':CMIIndex, 'format':CMIIdentifier, 'mod':'w', 'readerror':'404', 'writeerror':'405'},
 114              'cmi.interactions.n.time':{'pattern':CMIIndex, 'format':CMITime, 'mod':'w', 'readerror':'404', 'writeerror':'405'},
 115              'cmi.interactions.n.type':{'pattern':CMIIndex, 'format':CMIType, 'mod':'w', 'readerror':'404', 'writeerror':'405'},
 116              'cmi.interactions.n.correct_responses._count':{'pattern':CMIIndex, 'mod':'r', 'defaultvalue':'0', 'writeerror':'402'},
 117              'cmi.interactions.n.correct_responses.n.pattern':{'pattern':CMIIndex, 'format':CMIFeedback, 'mod':'w', 'readerror':'404', 'writeerror':'405'},
 118              'cmi.interactions.n.weighting':{'pattern':CMIIndex, 'format':CMIDecimal, 'range':weighting_range, 'mod':'w', 'readerror':'404', 'writeerror':'405'},
 119              'cmi.interactions.n.student_response':{'pattern':CMIIndex, 'format':CMIFeedback, 'mod':'w', 'readerror':'404', 'writeerror':'405'},
 120              'cmi.interactions.n.result':{'pattern':CMIIndex, 'format':CMIResult, 'mod':'w', 'readerror':'404', 'writeerror':'405'},
 121              'cmi.interactions.n.latency':{'pattern':CMIIndex, 'format':CMITimespan, 'mod':'w', 'readerror':'404', 'writeerror':'405'},
 122              'nav.event':{'defaultvalue':'', 'format':NAVEvent, 'mod':'w', 'readerror':'404', 'writeerror':'405'}
 123          };
 124      }
 125  
 126      var cmi, nav;
 127      function initdatamodel(scoid){
 128          prerequrl = cfgwwwroot + "/mod/scorm/prereqs.php?a=" + scormid + "&scoid=" + scoid + "&attempt=" + attempt + "&mode=" + viewmode + "&currentorg=" + currentorg + "&sesskey=" + sesskey;
 129          datamodelurlparams = "id=" + cmid + "&a=" + scormid + "&sesskey=" + sesskey + "&attempt=" + attempt + "&scoid=" + scoid;
 130  
 131          //
 132          // Datamodel inizialization
 133          //
 134          cmi = new Object();
 135              cmi.core = new Object();
 136              cmi.core.score = new Object();
 137              cmi.objectives = new Object();
 138              cmi.student_data = new Object();
 139              cmi.student_preference = new Object();
 140              cmi.interactions = new Object();
 141              // deprecated evaluation attributes
 142              cmi.evaluation = new Object();
 143              cmi.evaluation.comments = new Object();
 144  
 145          // Navigation Object
 146          nav = new Object();
 147  
 148          for (element in datamodel[scoid]) {
 149              if (element.match(/\.n\./) == null) {
 150                  if ((typeof eval('datamodel["' + scoid + '"]["' + element + '"].defaultvalue')) != 'undefined') {
 151                      eval(element + ' = datamodel["' + scoid + '"]["' + element + '"].defaultvalue;');
 152                  } else {
 153                      eval(element + ' = "";');
 154                  }
 155              }
 156          }
 157  
 158          eval(cmiobj[scoid]);
 159          eval(cmiint[scoid]);
 160  
 161          if (cmi.core.lesson_status == '') {
 162              cmi.core.lesson_status = 'not attempted';
 163          }
 164      }
 165  
 166      //
 167      // API Methods definition
 168      //
 169      var Initialized = false;
 170  
 171      function LMSInitialize (param) {
 172          scoid = scorm_current_node ? scorm_current_node.scoid : scoid;
 173          initdatamodel(scoid);
 174  
 175          errorCode = "0";
 176          if (param == "") {
 177              if (!Initialized) {
 178                  Initialized = true;
 179                  errorCode = "0";
 180                  if (scormdebugging) {
 181                      LogAPICall("LMSInitialize", param, "", errorCode);
 182                  }
 183                  return "true";
 184              } else {
 185                  errorCode = "101";
 186              }
 187          } else {
 188              errorCode = "201";
 189          }
 190          if (scormdebugging) {
 191              LogAPICall("LMSInitialize", param, "", errorCode);
 192          }
 193          return "false";
 194      }
 195  
 196      function LMSFinish (param) {
 197          errorCode = "0";
 198          if (param == "") {
 199              if (Initialized) {
 200                  Initialized = false;
 201                  result = StoreData(cmi,true);
 202                  if (nav.event != '') {
 203                      if (nav.event == 'continue') {
 204                          setTimeout('mod_scorm_launch_next_sco();',500);
 205                      } else {
 206                          setTimeout('mod_scorm_launch_prev_sco();',500);
 207                      }
 208                  } else {
 209                      if (scormauto == 1) {
 210                          setTimeout('mod_scorm_launch_next_sco();',500);
 211                      }
 212                  }
 213                  if (scormdebugging) {
 214                      LogAPICall("LMSFinish", "AJAXResult", result, 0);
 215                  }
 216                  result = ('true' == result) ? 'true' : 'false';
 217                  errorCode = (result == 'true') ? '0' : '101';
 218                  if (scormdebugging) {
 219                      LogAPICall("LMSFinish", "result", result, 0);
 220                      LogAPICall("LMSFinish", param, "", 0);
 221                  }
 222                  // trigger TOC update
 223                  var callback = M.mod_scorm.connectPrereqCallback;
 224                  YUI().use('io-base', function(Y) {
 225                      Y.on('io:complete', callback.success, Y);
 226                      Y.io(prerequrl);
 227                  });
 228                  return result;
 229              } else {
 230                  errorCode = "301";
 231              }
 232          } else {
 233              errorCode = "201";
 234          }
 235          if (scormdebugging) {
 236              LogAPICall("LMSFinish", param, "", errorCode);
 237          }
 238          return "false";
 239      }
 240  
 241      function LMSGetValue (element) {
 242          errorCode = "0";
 243          if (Initialized) {
 244              if (element != "") {
 245                  expression = new RegExp(CMIIndex,'g');
 246                  elementmodel = String(element).replace(expression,'.n.');
 247                  if ((typeof eval('datamodel["' + scoid + '"]["' + elementmodel + '"]')) != "undefined") {
 248                      if (eval('datamodel["' + scoid + '"]["' + elementmodel + '"].mod') != 'w') {
 249                          element = String(element).replace(expression, "_$1.");
 250                          elementIndexes = element.split('.');
 251                          subelement = 'cmi';
 252                          i = 1;
 253                          while ((i < elementIndexes.length) && (typeof eval(subelement) != "undefined")) {
 254                              subelement += '.' + elementIndexes[i++];
 255                          }
 256                              if (subelement == element) {
 257                              errorCode = "0";
 258                              if (scormdebugging) {
 259                                  LogAPICall("LMSGetValue", element, eval(element), 0);
 260                              }
 261                              return eval(element);
 262                          } else {
 263                              errorCode = "0"; // Need to check if it is the right errorCode
 264                          }
 265                      } else {
 266                          errorCode = eval('datamodel["' + scoid + '"]["' + elementmodel + '"].readerror');
 267                      }
 268                  } else {
 269                      childrenstr = '._children';
 270                      countstr = '._count';
 271                      if (elementmodel.substr(elementmodel.length - childrenstr.length,elementmodel.length) == childrenstr) {
 272                          parentmodel = elementmodel.substr(0,elementmodel.length - childrenstr.length);
 273                          if ((typeof eval('datamodel["' + scoid + '"]["' + parentmodel + '"]')) != "undefined") {
 274                              errorCode = "202";
 275                          } else {
 276                              errorCode = "201";
 277                          }
 278                      } else if (elementmodel.substr(elementmodel.length - countstr.length,elementmodel.length) == countstr) {
 279                          parentmodel = elementmodel.substr(0,elementmodel.length - countstr.length);
 280                          if ((typeof eval('datamodel["' + scoid + '"]["' + parentmodel + '"]')) != "undefined") {
 281                              errorCode = "203";
 282                          } else {
 283                              errorCode = "201";
 284                          }
 285                      } else {
 286                          errorCode = "201";
 287                      }
 288                  }
 289              } else {
 290                  errorCode = "201";
 291              }
 292          } else {
 293              errorCode = "301";
 294          }
 295          if (scormdebugging) {
 296              LogAPICall("LMSGetValue", element, "", errorCode);
 297          }
 298          return "";
 299      }
 300  
 301      function LMSSetValue (element,value) {
 302          errorCode = "0";
 303          if (Initialized) {
 304              if (element != "") {
 305                  expression = new RegExp(CMIIndex,'g');
 306                  elementmodel = String(element).replace(expression,'.n.');
 307                  if ((typeof eval('datamodel["' + scoid + '"]["' + elementmodel + '"]')) != "undefined") {
 308                      if (eval('datamodel["' + scoid + '"]["' + elementmodel + '"].mod') != 'r') {
 309                          expression = new RegExp(eval('datamodel["' + scoid + '"]["' + elementmodel + '"].format'));
 310                          value = value + '';
 311                          matches = value.match(expression);
 312                          if (matches != null) {
 313                              //Create dynamic data model element
 314                              if (element != elementmodel) {
 315                                  elementIndexes = element.split('.');
 316                                  subelement = 'cmi';
 317                                  for (i = 1; i < elementIndexes.length - 1; i++) {
 318                                      elementIndex = elementIndexes[i];
 319                                      if (elementIndexes[i + 1].match(/^\d+$/)) {
 320                                          if ((typeof eval(subelement + '.' + elementIndex)) == "undefined") {
 321                                              eval(subelement + '.' + elementIndex + ' = new Object();');
 322                                              eval(subelement + '.' + elementIndex + '._count = 0;');
 323                                          }
 324                                          if (elementIndexes[i + 1] == eval(subelement + '.' + elementIndex + '._count')) {
 325                                              eval(subelement + '.' + elementIndex + '._count++;');
 326                                          }
 327                                          if (elementIndexes[i + 1] > eval(subelement + '.' + elementIndex + '._count')) {
 328                                              errorCode = "201";
 329                                          }
 330                                          subelement = subelement.concat('.' + elementIndex + '_' + elementIndexes[i + 1]);
 331                                          i++;
 332                                      } else {
 333                                          subelement = subelement.concat('.' + elementIndex);
 334                                      }
 335                                      if ((typeof eval(subelement)) == "undefined") {
 336                                          eval(subelement + ' = new Object();');
 337                                          if (subelement.substr(0,14) == 'cmi.objectives') {
 338                                              eval(subelement + '.score = new Object();');
 339                                              eval(subelement + '.score._children = score_children;');
 340                                              eval(subelement + '.score.raw = "";');
 341                                              eval(subelement + '.score.min = "";');
 342                                              eval(subelement + '.score.max = "";');
 343                                          }
 344                                          if (subelement.substr(0,16) == 'cmi.interactions') {
 345                                              eval(subelement + '.objectives = new Object();');
 346                                              eval(subelement + '.objectives._count = 0;');
 347                                              eval(subelement + '.correct_responses = new Object();');
 348                                              eval(subelement + '.correct_responses._count = 0;');
 349                                          }
 350                                      }
 351                                  }
 352                                  element = subelement.concat('.' + elementIndexes[elementIndexes.length - 1]);
 353                              }
 354                              //Store data
 355                              if (errorCode == "0") {
 356                                  if (autocommit && !(SCORMapi1_2.timeout)) {
 357                                      SCORMapi1_2.timeout = Y.later(60000, API, 'LMSCommit', [""], false);
 358                                  }
 359                                  if ((typeof eval('datamodel["' + scoid + '"]["' + elementmodel + '"].range')) != "undefined") {
 360                                      range = eval('datamodel["' + scoid + '"]["' + elementmodel + '"].range');
 361                                      ranges = range.split('#');
 362                                      value = value * 1.0;
 363                                      if ((value >= ranges[0]) && (value <= ranges[1])) {
 364                                          eval(element + '=value;');
 365                                          errorCode = "0";
 366                                          if (scormdebugging) {
 367                                              LogAPICall("LMSSetValue", element, value, errorCode);
 368                                          }
 369                                          return "true";
 370                                      } else {
 371                                          errorCode = eval('datamodel["' + scoid + '"]["' + elementmodel + '"].writeerror');
 372                                      }
 373                                  } else {
 374                                      if (element == 'cmi.comments') {
 375                                          cmi.comments = cmi.comments + value;
 376                                      } else {
 377                                          eval(element + '=value;');
 378                                      }
 379                                      errorCode = "0";
 380                                      if (scormdebugging) {
 381                                          LogAPICall("LMSSetValue", element, value, errorCode);
 382                                      }
 383                                      return "true";
 384                                  }
 385                              }
 386                          } else {
 387                              errorCode = eval('datamodel["' + scoid + '"]["' + elementmodel + '"].writeerror');
 388                          }
 389                      } else {
 390                          errorCode = eval('datamodel["' + scoid + '"]["' + elementmodel + '"].writeerror');
 391                      }
 392                  } else {
 393                      errorCode = "201"
 394                  }
 395              } else {
 396                  errorCode = "201";
 397              }
 398          } else {
 399              errorCode = "301";
 400          }
 401          if (scormdebugging) {
 402              LogAPICall("LMSSetValue", element, value, errorCode);
 403          }
 404          return "false";
 405      }
 406  
 407      function LMSCommit (param) {
 408          if (SCORMapi1_2.timeout) {
 409              SCORMapi1_2.timeout.cancel();
 410              SCORMapi1_2.timeout = null;
 411          }
 412          errorCode = "0";
 413          if (param == "") {
 414              if (Initialized) {
 415                  result = StoreData(cmi,false);
 416                  // trigger TOC update
 417                  var callback = M.mod_scorm.connectPrereqCallback;
 418                  YUI().use('io-base', function(Y) {
 419                      Y.on('io:complete', callback.success, Y);
 420                      Y.io(prerequrl);
 421                  });
 422                  if (scormdebugging) {
 423                      LogAPICall("Commit", param, "", 0);
 424                  }
 425                  if (scormdebugging) {
 426                      LogAPICall("LMSCommit", "AJAXResult", result, 0);
 427                  }
 428                  result = ('true' == result) ? 'true' : 'false';
 429                  errorCode = (result == 'true') ? '0' : '101';
 430                  if (scormdebugging) {
 431                      LogAPICall("LMSCommit", "result", result, 0);
 432                      LogAPICall("LMSCommit", "errorCode", errorCode, 0);
 433                  }
 434                  return result;
 435              } else {
 436                  errorCode = "301";
 437              }
 438          } else {
 439              errorCode = "201";
 440          }
 441          if (scormdebugging) {
 442              LogAPICall("LMSCommit", param, "", 0);
 443          }
 444          return "false";
 445      }
 446  
 447      function LMSGetLastError () {
 448          if (scormdebugging) {
 449              LogAPICall("LMSGetLastError", "", "", errorCode);
 450          }
 451          return errorCode;
 452      }
 453  
 454      function LMSGetErrorString (param) {
 455          if (param != "") {
 456              var errorString = new Array();
 457              errorString["0"] = "No error";
 458              errorString["101"] = "General exception";
 459              errorString["201"] = "Invalid argument error";
 460              errorString["202"] = "Element cannot have children";
 461              errorString["203"] = "Element not an array - cannot have count";
 462              errorString["301"] = "Not initialized";
 463              errorString["401"] = "Not implemented error";
 464              errorString["402"] = "Invalid set value, element is a keyword";
 465              errorString["403"] = "Element is read only";
 466              errorString["404"] = "Element is write only";
 467              errorString["405"] = "Incorrect data type";
 468              if (scormdebugging) {
 469                  LogAPICall("LMSGetErrorString", param,  errorString[param], 0);
 470              }
 471              return errorString[param];
 472          } else {
 473              if (scormdebugging) {
 474                  LogAPICall("LMSGetErrorString", param,  "No error string found!", 0);
 475              }
 476             return "";
 477          }
 478      }
 479  
 480      function LMSGetDiagnostic (param) {
 481          if (param == "") {
 482              param = errorCode;
 483          }
 484          if (scormdebugging) {
 485              LogAPICall("LMSGetDiagnostic", param, param, 0);
 486          }
 487          return param;
 488      }
 489  
 490      function AddTime (first, second) {
 491          var sFirst = first.split(":");
 492          var sSecond = second.split(":");
 493          var cFirst = sFirst[2].split(".");
 494          var cSecond = sSecond[2].split(".");
 495          var change = 0;
 496  
 497          FirstCents = 0;  //Cents
 498          if (cFirst.length > 1) {
 499              FirstCents = parseInt(cFirst[1],10);
 500          }
 501          SecondCents = 0;
 502          if (cSecond.length > 1) {
 503              SecondCents = parseInt(cSecond[1],10);
 504          }
 505          var cents = FirstCents + SecondCents;
 506          change = Math.floor(cents / 100);
 507          cents = cents - (change * 100);
 508          if (Math.floor(cents) < 10) {
 509              cents = "0" + cents.toString();
 510          }
 511  
 512          var secs = parseInt(cFirst[0],10) + parseInt(cSecond[0],10) + change;  //Seconds
 513          change = Math.floor(secs / 60);
 514          secs = secs - (change * 60);
 515          if (Math.floor(secs) < 10) {
 516              secs = "0" + secs.toString();
 517          }
 518  
 519          mins = parseInt(sFirst[1],10) + parseInt(sSecond[1],10) + change;   //Minutes
 520          change = Math.floor(mins / 60);
 521          mins = mins - (change * 60);
 522          if (mins < 10) {
 523              mins = "0" + mins.toString();
 524          }
 525  
 526          hours = parseInt(sFirst[0],10) + parseInt(sSecond[0],10) + change;  //Hours
 527          if (hours < 10) {
 528              hours = "0" + hours.toString();
 529          }
 530  
 531          if (cents != '0') {
 532              return hours + ":" + mins + ":" + secs + '.' + cents;
 533          } else {
 534              return hours + ":" + mins + ":" + secs;
 535          }
 536      }
 537  
 538      function TotalTime() {
 539          total_time = AddTime(cmi.core.total_time, cmi.core.session_time);
 540          return '&' + underscore('cmi.core.total_time') + '=' + encodeURIComponent(total_time);
 541      }
 542  
 543      function CollectData(data,parent) {
 544          var datastring = '';
 545          for (property in data) {
 546              if (typeof data[property] == 'object') {
 547                  datastring += CollectData(data[property],parent + '.' + property);
 548              } else {
 549                  element = parent + '.' + property;
 550                  expression = new RegExp(CMIIndex,'g');
 551  
 552                  // get the generic name for this element (e.g. convert 'cmi.interactions.1.id' to 'cmi.interactions.n.id')
 553                  elementmodel = String(element).replace(expression,'.n.');
 554  
 555                  // ignore the session time element
 556                  if (element != "cmi.core.session_time") {
 557  
 558                      // check if this specific element is not defined in the datamodel,
 559                      // but the generic element name is
 560                      if ((eval('typeof datamodel["' + scoid + '"]["' + element + '"]')) == "undefined"
 561                          && (eval('typeof datamodel["' + scoid + '"]["' + elementmodel + '"]')) != "undefined") {
 562  
 563                          // add this specific element to the data model (by cloning
 564                          // the generic element) so we can track changes to it
 565                          eval('datamodel["' + scoid + '"]["' + element + '"]=CloneObj(datamodel["' + scoid + '"]["' + elementmodel + '"]);');
 566                      }
 567  
 568                      // check if the current element exists in the datamodel
 569                      if ((typeof eval('datamodel["' + scoid + '"]["' + element + '"]')) != "undefined") {
 570  
 571                          // make sure this is not a read only element
 572                          if (eval('datamodel["' + scoid + '"]["' + element + '"].mod') != 'r') {
 573  
 574                              elementstring = '&' + underscore(element) + '=' + encodeURIComponent(data[property]);
 575  
 576                              // check if the element has a default value
 577                              if ((typeof eval('datamodel["' + scoid + '"]["' + element + '"].defaultvalue')) != "undefined") {
 578  
 579                                  // check if the default value is different from the current value
 580                                  if (eval('datamodel["' + scoid + '"]["' + element + '"].defaultvalue') != data[property]
 581                                      || eval('typeof(datamodel["' + scoid + '"]["' + element + '"].defaultvalue)') != typeof(data[property])) {
 582  
 583                                      // append the URI fragment to the string we plan to commit
 584                                      datastring += elementstring;
 585  
 586                                      // update the element default to reflect the current committed value
 587                                      eval('datamodel["' + scoid + '"]["' + element + '"].defaultvalue=data[property];');
 588                                  }
 589                              } else {
 590                                  // append the URI fragment to the string we plan to commit
 591                                  datastring += elementstring;
 592                                  // no default value for the element, so set it now
 593                                  eval('datamodel["' + scoid + '"]["' + element + '"].defaultvalue=data[property];');
 594                              }
 595                          }
 596                      }
 597                  }
 598              }
 599          }
 600          return datastring;
 601      }
 602  
 603      function CloneObj(obj){
 604          if(obj == null || typeof(obj) != 'object') {
 605              return obj;
 606          }
 607  
 608          var temp = new obj.constructor(); // changed (twice)
 609          for(var key in obj) {
 610              temp[key] = CloneObj(obj[key]);
 611          }
 612  
 613          return temp;
 614      }
 615  
 616      function StoreData(data,storetotaltime) {
 617          if (storetotaltime) {
 618              if (cmi.core.lesson_status == 'not attempted') {
 619                  cmi.core.lesson_status = 'completed';
 620              }
 621              if (cmi.core.lesson_mode == 'normal') {
 622                  if (cmi.core.credit == 'credit') {
 623                      if (masteryoverride && cmi.student_data.mastery_score !== '' && cmi.core.score.raw !== '') {
 624                          if (parseFloat(cmi.core.score.raw) >= parseFloat(cmi.student_data.mastery_score)) {
 625                              cmi.core.lesson_status = 'passed';
 626                          } else {
 627                              cmi.core.lesson_status = 'failed';
 628                          }
 629                      }
 630                  }
 631              }
 632              if (cmi.core.lesson_mode == 'browse') {
 633                  if (datamodel[scoid]['cmi.core.lesson_status'].defaultvalue == '' && cmi.core.lesson_status == 'not attempted') {
 634                      cmi.core.lesson_status = 'browsed';
 635                  }
 636              }
 637              datastring = CollectData(data,'cmi');
 638              datastring += TotalTime();
 639          } else {
 640              datastring = CollectData(data,'cmi');
 641          }
 642  
 643          var myRequest = NewHttpReq();
 644          //alert('going to:' + "<?php p($CFG->wwwroot) ?>/mod/scorm/datamodel.php" + "id=<?php p($id) ?>&a=<?php p($a) ?>&sesskey=<?php echo sesskey() ?>"+datastring);
 645          result = DoRequest(myRequest,datamodelurl,datamodelurlparams + datastring);
 646          results = String(result).split('\n');
 647          errorCode = results[1];
 648          return results[0];
 649      }
 650  
 651      this.LMSInitialize = LMSInitialize;
 652      this.LMSFinish = LMSFinish;
 653      this.LMSGetValue = LMSGetValue;
 654      this.LMSSetValue = LMSSetValue;
 655      this.LMSCommit = LMSCommit;
 656      this.LMSGetLastError = LMSGetLastError;
 657      this.LMSGetErrorString = LMSGetErrorString;
 658      this.LMSGetDiagnostic = LMSGetDiagnostic;
 659  }
 660  
 661  M.scorm_api = {};
 662  
 663  M.scorm_api.init = function(Y, def, cmiobj, cmiint, cmistring256, cmistring4096, scormdebugging, scormauto, scormid, cfgwwwroot, sesskey, scoid, attempt, viewmode, cmid, currentorg, autocommit, masteryoverride) {
 664      window.API = new SCORMapi1_2(def, cmiobj, cmiint, cmistring256, cmistring4096, scormdebugging, scormauto, scormid, cfgwwwroot, sesskey, scoid, attempt, viewmode, cmid, currentorg, autocommit, masteryoverride);
 665  }