lp_controller_yannick.php 16 KB

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  1. <?php //$id: $
  2. /**
  3. * Controller script. Prepares the common background variables to give to the scripts corresponding to
  4. * the requested action
  5. * @package dokeos.learnpath
  6. * @author Yannick Warnier <ywarnier@beeznest.org>
  7. */
  8. /**
  9. * Initialisations
  10. */
  11. $debug = 0;
  12. if($debug>0) error_log('New LP -+- Entered lp_controller.php -+-',0);
  13. $langFile[] = "scormdocument";
  14. $langFile[] = "scorm";
  15. $langFile[] = "learnpath";
  16. //include class definitions before session_start() to ensure availability when touching
  17. //session vars containing learning paths
  18. require_once('learnpath.class.php');
  19. if($debug>0) error_log('New LP - Included learnpath',0);
  20. require_once('learnpathItem.class.php');
  21. if($debug>0) error_log('New LP - Included learnpathItem',0);
  22. require_once('scorm.class.php');
  23. if($debug>0) error_log('New LP - Included scorm',0);
  24. require_once('scormItem.class.php');
  25. if($debug>0) error_log('New LP - Included scormItem',0);
  26. require_once('aicc.class.php');
  27. if($debug>0) error_log('New LP - Included aicc',0);
  28. require_once('aiccItem.class.php');
  29. if($debug>0) error_log('New LP - Included aiccItem',0);
  30. require_once('temp.lib.php');
  31. if($debug>0) error_log('New LP - Included temp',0);
  32. require_once('back_compat.inc.php');
  33. if($debug>0) error_log('New LP - Included back_compat',0);
  34. api_protect_course_script();
  35. //TODO @TODO define tool, action and task to give as parameters to:
  36. //$is_allowed_to_edit = api_is_allowed_to_edit();
  37. if ($is_allowed_in_course == false){
  38. Display::display_header('');
  39. api_not_allowed();
  40. Display::display_footer();
  41. }
  42. require_once(api_get_path(LIBRARY_PATH) . "/fckeditor.lib.php");
  43. $lpfound = false;
  44. $myrefresh = 0;
  45. $myrefresh_id = 0;
  46. if(!empty($_SESSION['refresh']) && $_SESSION['refresh']==1){
  47. //check if we should do a refresh of the oLP object (for example after editing the LP)
  48. //if refresh is set, we regenerate the oLP object from the database (kind of flush)
  49. api_session_unregister('refresh');
  50. $myrefresh = 1;
  51. if($debug>0) error_log('New LP - Refresh asked',0);
  52. }
  53. if($debug>0) error_log('New LP - Passed refresh check',0);
  54. if(!empty($_REQUEST['dialog_box'])){
  55. $dialog_box = learnpath::escape_string(urldecode($_REQUEST['dialog_box']));
  56. }
  57. $lp_controller_touched = 1;
  58. if(isset($_SESSION['lpobject']))
  59. {
  60. if($debug>0) error_log('New LP - SESSION[lpobject] is defined',0);
  61. $oLP = unserialize($_SESSION['lpobject']);
  62. if(is_object($oLP)){
  63. if($debug>0) error_log('New LP - oLP is object',0);
  64. if($myrefresh == 1 OR $oLP->cc != api_get_course_id()){
  65. if($debug>0) error_log('New LP - Course has changed, discard lp object',0);
  66. if($myrefresh == 1){$myrefresh_id = $oLP->get_id();}
  67. $oLP = null;
  68. api_session_unregister('oLP');
  69. api_session_unregister('lpobject');
  70. }else{
  71. $_SESSION['oLP'] = $oLP;
  72. $lp_found = true;
  73. }
  74. }
  75. }
  76. if($debug>0) error_log('New LP - Passed data remains check',0);
  77. if($lp_found == false
  78. || ($_SESSION['oLP']->get_id() != $_REQUEST['lp_id'])
  79. )
  80. {
  81. if($debug>0) error_log('New LP - oLP is not object, has changed or refresh been asked, getting new',0);
  82. //regenerate a new lp object? Not always as some pages don't need the object (like upload?)
  83. if(!empty($_REQUEST['lp_id']) || !empty($myrefresh_id)){
  84. if($debug>0) error_log('New LP - lp_id is defined',0);
  85. //select the lp in the database and check which type it is (scorm/dokeos/aicc) to generate the
  86. //right object
  87. $lp_table = Database::get_course_table('lp');
  88. if(!empty($_REQUEST['lp_id'])){
  89. $lp_id = escape_txt($_REQUEST['lp_id']);
  90. }else{
  91. $lp_id = $myrefresh_id;
  92. }
  93. $sel = "SELECT * FROM $lp_table WHERE id = $lp_id";
  94. if($debug>0) error_log('New LP - querying '.$sel,0);
  95. $res = api_sql_query($sel);
  96. if(Database::num_rows($res))
  97. {
  98. $row = Database::fetch_array($res);
  99. $type = $row['lp_type'];
  100. if($debug>0) error_log('New LP - found row - type '.$type. ' - Calling constructor with '.api_get_course_id().' - '.$lp_id.' - '.api_get_user_id(),0);
  101. switch($type){
  102. case 1:
  103. $oLP = new learnpath(api_get_course_id(),$lp_id,api_get_user_id());
  104. if($oLP !== false){ $lp_found = true; }else{eror_log($oLP->error,0);}
  105. break;
  106. case 2:
  107. $oLP = new scorm(api_get_course_id(),$lp_id,api_get_user_id());
  108. if($oLP !== false){ $lp_found = true; }else{eror_log($oLP->error,0);}
  109. break;
  110. default:
  111. $oLP = new learnpath(api_get_course_id(),$lp_id,api_get_user_id());
  112. if($oLP !== false){ $lp_found = true; }else{eror_log($oLP->error,0);}
  113. break;
  114. }
  115. }
  116. }else{
  117. if($debug>0) error_log('New LP - Request[lp_id] and refresh_id were empty',0);
  118. }
  119. if($lp_found)
  120. {
  121. $_SESSION['oLP'] = $oLP;
  122. }
  123. }
  124. if($debug>0) error_log('New LP - Passed oLP creation check',0);
  125. /**
  126. * Actions switching
  127. */
  128. $_SESSION['oLP']->update_queue = array(); //reinitialises array used by javascript to update items in the TOC
  129. $_SESSION['oLP']->message = ''; //should use ->clear_message() method but doesn't work
  130. switch($_REQUEST['action'])
  131. {
  132. case 'admin_view':
  133. if($debug>0) error_log('New LP - admin_view action triggered',0);
  134. $_SESSION['refresh'] = 1;
  135. require('lp_admin_view.php');
  136. break;
  137. case 'upload':
  138. if($debug>0) error_log('New LP - upload action triggered',0);
  139. $cwdir = getcwd();
  140. require('lp_upload.php');
  141. //reinit current working directory as many functions in upload change it
  142. chdir($cwdir);
  143. require('lp_list.php');
  144. break;
  145. case 'export':
  146. if($debug>0) error_log('New LP - export action triggered',0);
  147. if(!$lp_found){ error_log('New LP - No learnpath given for export',0); require('lp_list.php'); }
  148. else{
  149. if($_SESSION['oLP']->get_type()==2){
  150. $_SESSION['oLP']->export_zip();
  151. }
  152. //require('lp_list.php');
  153. }
  154. break;
  155. case 'delete':
  156. if($debug>0) error_log('New LP - delete action triggered',0);
  157. if(!$lp_found){ error_log('New LP - No learnpath given for delete',0); require('lp_list.php'); }
  158. else{
  159. $_SESSION['refresh'] = 1;
  160. $_SESSION['oLP']->delete(null,null,'remove');
  161. api_session_unregister('oLP');
  162. //require('lp_delete.php');
  163. require('lp_list.php');
  164. }
  165. break;
  166. case 'toggle_visible': //change lp visibility
  167. if($debug>0) error_log('New LP - publish action triggered',0);
  168. if(!$lp_found){ error_log('New LP - No learnpath given for publish',0); require('lp_list.php'); }
  169. else{
  170. learnpath::toggle_visibility($_REQUEST['lp_id'],$_REQUEST['new_status']);
  171. require('lp_list.php');
  172. }
  173. break;
  174. case 'edit':
  175. if($debug>0) error_log('New LP - edit action triggered',0);
  176. if(!$lp_found){ error_log('New LP - No learnpath given for edit',0); require('lp_list.php'); }
  177. else{
  178. $_SESSION['refresh'] = 1;
  179. require('lp_edit.php');
  180. //require('lp_admin_view.php');
  181. }
  182. break;
  183. case 'update_lp':
  184. if($debug>0) error_log('New LP - update_lp action triggered',0);
  185. if(!$lp_found){ error_log('New LP - No learnpath given for edit',0); require('lp_list.php'); }
  186. else{
  187. $_SESSION['refresh'] = 1;
  188. $_SESSION['oLP']->set_name($_REQUEST['lp_name']);
  189. $_SESSION['oLP']->set_encoding($_REQUEST['lp_encoding']);
  190. $_SESSION['oLP']->set_maker($_REQUEST['lp_maker']);
  191. $_SESSION['oLP']->set_proximity($_REQUEST['lp_proximity']);
  192. require('lp_list.php');
  193. }
  194. break;
  195. case 'add_lp':
  196. if($debug>0) error_log('New LP - add_lp action triggered',0);
  197. //call learnpath creation abstract method with course_id, learnpath_name, learnpath_description, type_of_lp, origin_of_creation, file_name
  198. if(!empty($_REQUEST['learnpath_name'])){
  199. $_SESSION['refresh'] = 1;
  200. $new_lp_id = learnpath::add_lp(api_get_course_id(),$_REQUEST['learnpath_name'],$_REQUEST['learnpath_description'],'dokeos','manual','');
  201. //TODO maybe create a first module directly to avoid bugging the user with useless queries
  202. $_SESSION['oLP'] = new learnpath(api_get_course_id(),$new_lp_id,api_get_user_id());
  203. $_SESSION['oLP']->add_item(0,-1,'dokeos_chapter',$_REQUEST['path'],'Default');
  204. }
  205. require('lp_list.php');
  206. break;
  207. case 'add_item':
  208. if($debug>0) error_log('New LP - add item action triggered',0);
  209. if(!$lp_found){ error_log('New LP - No learnpath given for add item',0); require('lp_list.php'); }
  210. else{
  211. $_SESSION['refresh'] = 1;
  212. if(!empty($_REQUEST['submit_button']) && !empty($_REQUEST['title'])){
  213. $_SESSION['oLP']->add_item($_REQUEST['parent'],$_REQUEST['previous'],$_REQUEST['type'],$_REQUEST['path'],$_REQUEST['title']);
  214. }
  215. require('lp_admin_view.php');
  216. }
  217. break;
  218. case 'add_module':
  219. if($debug > 0)
  220. error_log('New LP - add item action triggered', 0);
  221. if(!$lp_found)
  222. {
  223. error_log('New LP - No learnpath given for add item', 0);
  224. require('lp_list.php');
  225. }
  226. else
  227. {
  228. //$_SESSION['refresh'] = 1;
  229. if(isset($_POST['cmdSubmit']))
  230. {
  231. $_SESSION['oLP']->add_item(0, -1, 'dokeos_module', '', $_POST['txtTitle']);
  232. }
  233. require('lp_view.php');
  234. }
  235. break;
  236. case 'add_document':
  237. if($debug > 0)
  238. error_log('New LP - add item action triggered', 0);
  239. if(!$lp_found)
  240. {
  241. error_log('New LP - No learnpath given for add item', 0);
  242. require('lp_list.php');
  243. }
  244. else
  245. {
  246. //$_SESSION['refresh'] = 1;
  247. if(isset($_POST['cmdSubmit']))
  248. {
  249. $_SESSION['oLP']->add_item(0, -1, 'dokeos_document', '', $_POST['txtTitle']);
  250. }
  251. require('lp_view.php');
  252. }
  253. break;
  254. case 'add_sub_item': //add an item inside a chapter
  255. if($debug>0) error_log('New LP - add sub item action triggered',0);
  256. if(!$lp_found){ error_log('New LP - No learnpath given for add sub item',0); require('lp_list.php'); }
  257. else{
  258. $_SESSION['refresh'] = 1;
  259. if(!empty($_REQUEST['parent_item_id'])){
  260. $_SESSION['from_learnpath']='yes';
  261. $_SESSION['origintoolurl'] = 'lp_controller.php?action=admin_view&lp_id='.$_REQUEST['lp_id'];
  262. require('resourcelinker.php');
  263. //$_SESSION['oLP']->add_sub_item($_REQUEST['parent_item_id'],$_REQUEST['previous'],$_REQUEST['type'],$_REQUEST['path'],$_REQUEST['title']);
  264. }else{
  265. require('lp_admin_view.php');
  266. }
  267. }
  268. break;
  269. case 'deleteitem':
  270. case 'delete_item':
  271. if($debug>0) error_log('New LP - delete item action triggered',0);
  272. if(!$lp_found){ error_log('New LP - No learnpath given for delete item',0); require('lp_list.php'); }
  273. else{
  274. $_SESSION['refresh'] = 1;
  275. if(!empty($_REQUEST['id'])){
  276. $_SESSION['oLP']->delete_item($_REQUEST['id']);
  277. }
  278. require('lp_admin_view.php');
  279. }
  280. break;
  281. case 'edititem':
  282. case 'edit_item':
  283. if($debug>0) error_log('New LP - edit item action triggered',0);
  284. if(!$lp_found){ error_log('New LP - No learnpath given for edit item',0); require('lp_list.php'); }
  285. else{
  286. if(!empty($_REQUEST['id']) && !empty($_REQUEST['submit_item'])){
  287. $_SESSION['refresh'] = 1;
  288. $_SESSION['oLP']->edit_item($_REQUEST['id'], $_REQUEST['title']);
  289. }
  290. require('lp_admin_view.php');
  291. }
  292. break;
  293. case 'edititemprereq':
  294. case 'edit_item_prereq':
  295. if($debug>0) error_log('New LP - edit item prereq action triggered',0);
  296. if(!$lp_found){ error_log('New LP - No learnpath given for edit item prereq',0); require('lp_list.php'); }
  297. else{
  298. if(!empty($_REQUEST['id']) && !empty($_REQUEST['submit_item'])){
  299. $_SESSION['refresh'] = 1;
  300. $_SESSION['oLP']->edit_item_prereq($_REQUEST['id'],$_REQUEST['prereq']);
  301. }
  302. require('lp_admin_view.php');
  303. }
  304. break;
  305. case 'restart':
  306. if($debug>0) error_log('New LP - restart action triggered',0);
  307. if(!$lp_found){ error_log('New LP - No learnpath given for restart',0); require('lp_list.php'); }
  308. else{
  309. $_SESSION['oLP']->restart();
  310. require('lp_view.php');
  311. }
  312. break;
  313. case 'last':
  314. if($debug>0) error_log('New LP - last action triggered',0);
  315. if(!$lp_found){ error_log('New LP - No learnpath given for last',0); require('lp_list.php'); }
  316. else{
  317. $_SESSION['oLP']->last();
  318. require('lp_view.php');
  319. }
  320. break;
  321. case 'first':
  322. if($debug>0) error_log('New LP - first action triggered',0);
  323. if(!$lp_found){ error_log('New LP - No learnpath given for first',0); require('lp_list.php'); }
  324. else{
  325. $_SESSION['oLP']->first();
  326. require('lp_view.php');
  327. }
  328. break;
  329. case 'next':
  330. if($debug>0) error_log('New LP - next action triggered',0);
  331. if(!$lp_found){ error_log('New LP - No learnpath given for next',0); require('lp_list.php'); }
  332. else{
  333. $_SESSION['oLP']->next();
  334. require('lp_view.php');
  335. }
  336. break;
  337. case 'previous':
  338. if($debug>0) error_log('New LP - previous action triggered',0);
  339. if(!$lp_found){ error_log('New LP - No learnpath given for previous',0); require('lp_list.php'); }
  340. else{
  341. $_SESSION['oLP']->previous();
  342. require('lp_view.php');
  343. }
  344. break;
  345. case 'content':
  346. if($debug>0) error_log('New LP - content action triggered',0);
  347. if($debug>0) error_log('New LP - Item id is '.$_GET['item_id'],0);
  348. if(!$lp_found){ error_log('New LP - No learnpath given for content',0); require('lp_list.php'); }
  349. else{
  350. $_SESSION['oLP']->set_current_item($_GET['item_id']);
  351. $_SESSION['oLP']->start_current_item();
  352. require('lp_content.php');
  353. }
  354. break;
  355. case 'view':
  356. if($debug > 0)
  357. error_log('New LP - view action triggered', 0);
  358. if(!$lp_found)
  359. {
  360. error_log('New LP - No learnpath given for view', 0);
  361. require('lp_list.php');
  362. }
  363. else
  364. {
  365. if($debug > 0)
  366. error_log('New LP - trying to set current item to ' . $_REQUEST['item_id'], 0);
  367. $_SESSION['oLP']->set_current_item($_REQUEST['item_id']);
  368. require('lp_view.php');
  369. }
  370. break;
  371. case 'save':
  372. if($debug>0) error_log('New LP - save action triggered',0);
  373. if(!$lp_found){ error_log('New LP - No learnpath given for save',0); require('lp_list.php'); }
  374. else{
  375. $_SESSION['oLP']->save_item();
  376. require('lp_save.php');
  377. }
  378. break;
  379. case 'stats':
  380. if($debug>0) error_log('New LP - stats action triggered',0);
  381. if(!$lp_found){ error_log('New LP - No learnpath given for stats',0); require('lp_list.php'); }
  382. else{
  383. $_SESSION['oLP']->save_current();
  384. $_SESSION['oLP']->save_last();
  385. require('lp_stats.php');
  386. }
  387. break;
  388. case 'list':
  389. if($debug>0) error_log('New LP - list action triggered',0);
  390. if($lp_found){
  391. $_SESSION['refresh'] = 1;
  392. $_SESSION['oLP']->save_last();
  393. }
  394. require('lp_list.php');
  395. break;
  396. case 'mode':
  397. //switch between fullscreen and embedded mode
  398. if($debug>0) error_log('New LP - mode change triggered',0);
  399. $mode = $_REQUEST['mode'];
  400. if($mode == 'fullscreen'){
  401. $_SESSION['oLP']->mode = 'fullscreen';
  402. }else{
  403. $_SESSION['oLP']->mode = 'embedded';
  404. }
  405. require('lp_view.php');
  406. break;
  407. case 'switch_view_mode':
  408. if($debug>0) error_log('New LP - switch_view_mode action triggered',0);
  409. if(!$lp_found){ error_log('New LP - No learnpath given for switch',0); require('lp_list.php'); }
  410. $_SESSION['refresh'] = 1;
  411. $_SESSION['oLP']->update_default_view_mode();
  412. require('lp_list.php');
  413. break;
  414. case 'switch_force_commit':
  415. if($debug>0) error_log('New LP - switch_force_commit action triggered',0);
  416. if(!$lp_found){ error_log('New LP - No learnpath given for switch',0); require('lp_list.php'); }
  417. $_SESSION['refresh'] = 1;
  418. $_SESSION['oLP']->update_default_scorm_commit();
  419. require('lp_list.php');
  420. break;
  421. case 'switch_reinit':
  422. if($debug>0) error_log('New LP - switch_reinit action triggered',0);
  423. if(!$lp_found){ error_log('New LP - No learnpath given for switch',0); require('lp_list.php'); }
  424. $_SESSION['refresh'] = 1;
  425. $_SESSION['oLP']->update_reinit();
  426. require('lp_list.php');
  427. break;
  428. case 'switch_scorm_debug':
  429. if($debug>0) error_log('New LP - switch_scorm_debug action triggered',0);
  430. if(!$lp_found){ error_log('New LP - No learnpath given for switch',0); require('lp_list.php'); }
  431. $_SESSION['refresh'] = 1;
  432. $_SESSION['oLP']->update_scorm_debug();
  433. require('lp_list.php');
  434. break;
  435. case 'intro_cmdAdd':
  436. if($debug>0) error_log('New LP - intro_cmdAdd action triggered',0);
  437. //add introduction section page
  438. break;
  439. case 'moveitem':
  440. case 'move_item':
  441. if($debug > 0)
  442. error_log('New LP - move_item action triggered', 0);
  443. if(!$lp_found)
  444. {
  445. error_log('New LP - No learnpath given for move_item', 0);
  446. require('lp_list.php');
  447. }
  448. if(!empty($_REQUEST['direction']) && !empty($_REQUEST['id']))
  449. {
  450. $_SESSION['refresh'] = 1;
  451. $_SESSION['oLP']->move_item($_REQUEST['id'], $_REQUEST['direction']);
  452. }
  453. require('lp_admin_view.php');
  454. break;
  455. case 'js_api_refresh':
  456. if($debug>0) error_log('New LP - js_api_refresh action triggered',0);
  457. if(!$lp_found){ error_log('New LP - No learnpath given for js_api_refresh',0); require('lp_message.php'); }
  458. if(isset($_REQUEST['item_id'])){
  459. $htmlHeadXtra[] = $_SESSION['oLP']->get_js_info($_REQUEST['item_id']);
  460. }
  461. require('lp_message.php');
  462. break;
  463. default:
  464. if($debug>0) error_log('New LP - default action triggered',0);
  465. //$_SESSION['refresh'] = 1;
  466. require('lp_list.php');
  467. break;
  468. }
  469. if(!empty($_SESSION['oLP'])){
  470. $_SESSION['lpobject'] = serialize($_SESSION['oLP']);
  471. if($debug>0) error_log('New LP - lpobject is serialized in session',0);
  472. }
  473. ?>