docs/home/classes/ContentManager.class.php

   1 <?php
   2 /************************************************************************/
   3 /* AContent                                                             */
   4 /************************************************************************/
   5 /* Copyright (c) 2010                                                   */
   6 /* Inclusive Design Institute                                           */
   7 /*                                                                      */
   8 /* This program is free software. You can redistribute it and/or        */
   9 /* modify it under the terms of the GNU General Public License          */
  10 /* as published by the Free Software Foundation.                        */
  11 /************************************************************************/
  12
  13 if (!defined('TR_INCLUDE_PATH')) exit;
  14
  15 require_once(TR_INCLUDE_PATH. 'classes/DAO/DAO.class.php');
  16 require_once(TR_INCLUDE_PATH. 'classes/DAO/ContentDAO.class.php');
  17 require_once(TR_INCLUDE_PATH. 'classes/Utility.class.php');
  18
  19 class ContentManager
  20 {
  21         /* db handler   */
  22         var $db;
  23
  24         /*      array           */
  25         var $_menu;
  26
  27         /*      array           */
  28         var $_menu_info;
  29
  30         /*      array           */
  31         var $_menu_in_order;
  32
  33         /* int                  */
  34         var $course_id;
  35
  36         // private
  37         var $num_sections;
  38         var $max_depth;
  39         var $content_length;
  40         var $dao;
  41         var $contentDAO;
  42
  43         /* constructor  */
  44         function ContentManager($course_id) {
  45                 if (!($course_id > 0)) {
  46                         return;
  47                 }
  48                 $this->course_id = $course_id;
  49                 $this->dao = new DAO();
  50                 $this->contentDAO = new ContentDAO();
  51
  52                 /* x could be the ordering or even the content_id       */
  53                 /* don't really need the ordering anyway.                       */
  54                 /* $_menu[content_parent_id][x] = array('content_id', 'ordering', 'title') */
  55                 $_menu = array();
  56
  57                 /* number of content sections */
  58                 $num_sections = 0;
  59
  60                 $max_depth = array();
  61                 $_menu_info = array();
  62
  63 //              $sql = "SELECT content_id, content_parent_id, ordering, title, UNIX_TIMESTAMP(release_date) AS u_release_date, content_type
  64 //                        FROM ".TABLE_PREFIX."content
  65 //                       WHERE course_id=$this->course_id
  66 //                       ORDER BY content_parent_id, ordering";
  67 //              $result = mysql_query($sql, $this->db);
  68
  69                 $rows = $this->contentDAO->getContentByCourseID($this->course_id);
  70
  71                 if (is_array($rows)) {
  72                         foreach ($rows as $row) {
  73                                 $num_sections++;
  74                                 $_menu[$row['content_parent_id']][] = array('content_id'=> $row['content_id'],
  75                                                                                                                         'ordering'      => $row['ordering'],
  76                                                                                                                         'title'         => htmlspecialchars($row['title']),
  77                                                                                                                         'content_type' => $row['content_type']);
  78
  79                                 $_menu_info[$row['content_id']] = array('content_parent_id' => $row['content_parent_id'],
  80                                                                                                                 'title'                         => htmlspecialchars($row['title']),
  81                                                                                                                 'ordering'                      => $row['ordering'],
  82                                                                                                                 'content_type' => $row['content_type']);
  83
  84                                 /*
  85                                  * add test content asscioations
  86                                  * find associations per content page, and add it as a sublink.
  87                                  * @author harris
  88                                  */
  89                                 $test_rows = $this->getContentTestsAssoc($row['content_id']);
  90                                 if (is_array($test_rows)) {
  91                                         foreach ($test_rows as $test_row){
  92                                                 $_menu[$row['content_id']][] = array(   'test_id'       => $test_row['test_id'],
  93                                                                                                                                 'title'         => htmlspecialchars($test_row['title']),
  94                                                                                                                                 'content_type' => CONTENT_TYPE_CONTENT);
  95                                         } // end of foreach
  96                                 } // end of if
  97                                 /* End of add test content asscioations */
  98
  99                                 if ($row['content_parent_id'] == 0) {
 100                                         $max_depth[$row['content_id']] = 1;
 101                                 } else {
 102                                         $max_depth[$row['content_id']] = $max_depth[$row['content_parent_id']]+1;
 103                                 }
 104                         } // end of foreach
 105                 } // end of if
 106
 107                 $this->_menu = $_menu;
 108
 109                 $this->_menu_info =  $_menu_info;
 110
 111                 $this->num_sections = $num_sections;
 112
 113                 if (count($max_depth) > 1) {
 114                         $this->max_depth = max($max_depth);
 115                 } else {
 116                         $this->max_depth = 0;
 117                 }
 118
 119                 // generate array of all the content ids in the same order that they appear in "content navigation"
 120                 if ($this->getNextContentID(0) > 0) {
 121                         $this->_menu_in_order[] = $next_content_id = $this->getNextContentID(0);
 122                 }
 123                 while ($next_content_id > 0)
 124                 {
 125                         $next_content_id = $this->getNextContentID($next_content_id);
 126
 127                         if (in_array($next_content_id, $this->_menu_in_order)) break;
 128                         else if ($next_content_id > 0) $this->_menu_in_order[] = $next_content_id;
 129                 }
 130
 131                 $this->content_length = count($_menu[0]);
 132         }
 133
 134         // This function is called by initContent to construct $this->_menu_in_order, an array to
 135         // holds all the content ids in the same order that they appear in "content navigation"
 136         function getNextContentID($content_id, $order=0) {
 137                 // return first root content when $content_id is not given
 138                 if (!$content_id) {
 139                         return $this->_menu[0][0]['content_id'];
 140                 }
 141
 142                 $myParent = $this->_menu_info[$content_id]['content_parent_id'];
 143                 $myOrder  = $this->_menu_info[$content_id]['ordering'];
 144
 145                 // calculate $myOrder, add in the number of tests in front of this content page
 146                 if (is_array($this->_menu[$myParent])) {
 147                         $num_of_tests = 0;
 148                         foreach ($this->_menu[$myParent] as $menuContent) {
 149                                 if ($menuContent['content_id'] == $content_id) break;
 150                                 if (isset($menuContent['test_id'])) $num_of_tests++;
 151                         }
 152                 }
 153                 $myOrder += $num_of_tests;
 154                 // end of calculating $myOrder
 155
 156                 /* if this content has children, then take the first one. */
 157                 if ( isset($this->_menu[$content_id]) && is_array($this->_menu[$content_id]) && ($order==0) ) {
 158                         /* has children */
 159                         // if the child is a test, keep searching for the content id
 160                         foreach ($this->_menu[$content_id] as $menuID => $menuContent)
 161                         {
 162                                 if (!empty($menuContent['test_id'])) continue;
 163                                 else
 164                                 {
 165                                         $nextMenu = $this->_menu[$content_id][$menuID]['content_id'];
 166                                         break;
 167                                 }
 168                         }
 169
 170                         // all children are tests
 171                         if (!isset($nextMenu))
 172                         {
 173                                 if (isset($this->_menu[$myParent][$myOrder]['content_id'])) {
 174                                         // has sibling
 175                                         return $this->_menu[$myParent][$myOrder]['content_id'];
 176                                 }
 177                                 else { // no sibling
 178                                         $nextMenu = $this->getNextContentID($myParent, 1);
 179                                 }
 180                         }
 181                         return $nextMenu;
 182                 } else {
 183                         /* no children */
 184                         if (isset($this->_menu[$myParent][$myOrder]) && $this->_menu[$myParent][$myOrder] != '') {
 185                                 /* Has sibling */
 186                                 return $this->_menu[$myParent][$myOrder]['content_id'];
 187                         } else {
 188                                 /* No more siblings */
 189                                 if ($myParent != 0) {
 190                                         return $this->getNextContentID($myParent, 1);
 191                                 }
 192                         }
 193                 }
 194         }
 195
 196         function getContent($parent_id=-1, $length=-1) {
 197                 if ($parent_id == -1) {
 198                         $my_menu_copy = $this->_menu;
 199                         if ($length != -1) {
 200                                 $my_menu_copy[0] = array_slice($my_menu_copy[0], 0, $length);
 201                         }
 202                         return $my_menu_copy;
 203                 }
 204                 return $this->_menu[$parent_id];
 205         }
 206
 207
 208         function &getContentPath($content_id) {
 209                 $path = array();
 210
 211                 $path[] = array('content_id' => $content_id, 'title' => $this->_menu_info[$content_id]['title']);
 212
 213                 $this->getContentPathRecursive($content_id, $path);
 214
 215                 $path = array_reverse($path);
 216                 return $path;
 217         }
 218
 219
 220         function getContentPathRecursive($content_id, &$path) {
 221                 $parent_id = $this->_menu_info[$content_id]['content_parent_id'];
 222
 223                 if ($parent_id > 0) {
 224                         $path[] = array('content_id' => $parent_id, 'title' => $this->_menu_info[$parent_id]['title']);
 225                         $this->getContentPathRecursive($parent_id, $path);
 226                 }
 227         }
 228
 229         function addContent($course_id, $content_parent_id, $ordering, $title, $text, $keywords,
 230                             $related, $formatting, $head = '', $use_customized_head = 0,
 231                             $test_message = '', $content_type = CONTENT_TYPE_CONTENT) {
 232                 global $_current_user, $_course_id;
 233
 234             if (!isset($_current_user) || !$_current_user->isAuthor($this->course_id)) {
 235                         return false;
 236                 }
 237
 238                 // shift the new neighbouring content down
 239                 $sql = "UPDATE ".TABLE_PREFIX."content SET ordering=ordering+1
 240                          WHERE ordering>=$ordering
 241                            AND content_parent_id=$content_parent_id
 242                            AND course_id=$_course_id";
 243                 $this->contentDAO->execute($sql);
 244
 245                 /* main topics all have minor_num = 0 */
 246                 $cid = $this->contentDAO->Create($_course_id, $content_parent_id, $ordering, 0, $formatting,
 247                                           $keywords, '', $title, $text, $head, $use_customized_head,
 248                                           $test_message, $content_type);
 249                 return $cid;
 250         }
 251
 252         function editContent($content_id, $title, $text, $keywords, $formatting,
 253                              $head, $use_customized_head, $test_message) {
 254             global $_current_user;
 255
 256                 if (!isset($_current_user) || !$_current_user->isAuthor($this->course_id)) {
 257                         return FALSE;
 258                 }
 259
 260                 $this->contentDAO->Update($content_id, $title, $text, $keywords, $formatting, $head, $use_customized_head,
 261                                           $test_message);
 262         }
 263
 264         function moveContent($content_id, $new_content_parent_id, $new_content_ordering) {
 265                 global $msg, $_current_user, $_course_id;
 266
 267             if (!isset($_current_user) || !$_current_user->isAuthor($this->course_id)) {
 268                         return FALSE;
 269                 }
 270
 271                 /* first get the content to make sure it exists */
 272 //              $sql    = "SELECT ordering, content_parent_id FROM ".TABLE_PREFIX."content WHERE content_id=$content_id AND course_id=$_SESSION[course_id]";
 273 //              $result = mysql_query($sql, $this->db);
 274                 if (!($row = $this->getContentPage($content_id)) ) {
 275                         return FALSE;
 276                 }
 277                 $old_ordering           = $row['ordering'];
 278                 $old_content_parent_id  = $row['content_parent_id'];
 279
 280                 $sql    = "SELECT max(ordering) max_ordering FROM ".TABLE_PREFIX."content WHERE content_parent_id=$old_content_parent_id AND course_id=$_course_id";
 281 //              $result = mysql_query($sql, $this->db);
 282 //              $row = mysql_fetch_assoc($result);
 283                 $row = $this->contentDAO->execute($sql);
 284                 $max_ordering = $row[0]['max_ordering'];
 285
 286                 if ($content_id == $new_content_parent_id) {
 287                         $msg->addError("NO_SELF_AS_PARENT");
 288                         return;
 289                 }
 290
 291                 if ($old_content_parent_id == $new_content_parent_id && $old_ordering == $new_content_ordering) {
 292                         $msg->addError("SAME_LOCATION");
 293                         return;
 294                 }
 295
 296                 $content_path = $this->getContentPath($new_content_parent_id);
 297                 foreach ($content_path as $parent){
 298                         if ($parent['content_id'] == $content_id) {
 299                                 $msg->addError("NO_CHILD_AS_PARENT");
 300                                 return;
 301                         }
 302                 }
 303
 304                 // if the new_content_ordering is greater than the maximum ordering of the parent content,
 305                 // set the $new_content_ordering to the maximum ordering. This happens when move the content
 306                 // to the last element under the same parent content.
 307                 if ($old_content_parent_id == $new_content_parent_id && $new_content_ordering > $max_ordering)
 308                         $new_content_ordering = $max_ordering;
 309                 if (($old_content_parent_id != $new_content_parent_id) || ($old_ordering != $new_content_ordering)) {
 310                         // remove the gap left by the moved content
 311                         $sql = "UPDATE ".TABLE_PREFIX."content
 312                                    SET ordering=ordering-1
 313                                  WHERE ordering>$old_ordering
 314                                    AND content_parent_id=$old_content_parent_id
 315                                    AND content_id<>$content_id
 316                                    AND course_id=$_course_id";
 317 //                      $result = mysql_query($sql, $this->db);
 318                         $this->contentDAO->execute($sql);
 319
 320                         // shift the new neighbouring content down
 321                         $sql = "UPDATE ".TABLE_PREFIX."content
 322                                    SET ordering=ordering+1
 323                                  WHERE ordering>=$new_content_ordering
 324                                    AND content_parent_id=$new_content_parent_id
 325                                    AND content_id<>$content_id
 326                                    AND course_id=$_course_id";
 327 //                      $result = mysql_query($sql, $this->db);
 328                         $this->contentDAO->execute($sql);
 329
 330                         $sql    = "UPDATE ".TABLE_PREFIX."content
 331                                       SET content_parent_id=$new_content_parent_id, ordering=$new_content_ordering
 332                                     WHERE content_id=$content_id AND course_id=$_course_id";
 333 //                      $result = mysql_query($sql, $this->db);
 334                         $this->contentDAO->execute($sql);
 335                 }
 336         }
 337
 338         function deleteContent($content_id) {
 339                 global $_current_user, $_course_id;
 340
 341                 if (!isset($_current_user) || !$_current_user->isAuthor($this->course_id)) {
 342                         return false;
 343                 }
 344
 345                 /* check if exists */
 346 //              $sql    = "SELECT ordering, content_parent_id FROM ".TABLE_PREFIX."content WHERE content_id=$content_id AND course_id=$_SESSION[course_id]";
 347 //              $result = mysql_query($sql, $this->db);
 348 //              if (!($row = @mysql_fetch_assoc($result)) ) {
 349                 if (!($row = $this->getContentPage($content_id)) ) {
 350                         return false;
 351                 }
 352                 $ordering                       = $row['ordering'];
 353                 $content_parent_id      = $row['content_parent_id'];
 354
 355                 /* check if this content has sub content        */
 356                 $children = $this->_menu[$content_id];
 357
 358                 if (is_array($children) && (count($children)>0) ) {
 359                         /* delete its children recursively first*/
 360                         foreach ($children as $x => $info) {
 361                                 if ($info['content_id'] > 0) {
 362                                         $this->deleteContentRecursive($info['content_id']);
 363                                 }
 364                         }
 365                 }
 366
 367                 $this->contentDAO->Delete($content_id);
 368
 369                 /* re-order the rest of the content */
 370                 $sql = "UPDATE ".TABLE_PREFIX."content SET ordering=ordering-1 WHERE ordering>=$ordering AND content_parent_id=$content_parent_id AND course_id=$_course_id";
 371                 $this->contentDAO->execute($sql);
 372
 373                 /* delete this content page                                     */
 374 //              $sql    = "DELETE FROM ".TABLE_PREFIX."content WHERE content_id=$content_id AND course_id=$_SESSION[course_id]";
 375 //              $result = mysql_query($sql, $this->db);
 376
 377                 /* delete this content from member tracking page        */
 378 //              $sql    = "DELETE FROM ".TABLE_PREFIX."member_track WHERE content_id=$content_id AND course_id=$_SESSION[course_id]";
 379 //              $result = mysql_query($sql, $this->db);
 380
 381 //              $sql    = "DELETE FROM ".TABLE_PREFIX."related_content WHERE content_id=$content_id OR related_content_id=$content_id";
 382 //              $result = mysql_query($sql, $this->db);
 383
 384                 /* delete the content tests association */
 385 //              $sql    = "DELETE FROM ".TABLE_PREFIX."content_tests_assoc WHERE content_id=$content_id";
 386 //              $result = mysql_query($sql, $this->db);
 387
 388                 /* delete the content forum association */
 389 //              $sql    = "DELETE FROM ".TABLE_PREFIX."content_forums_assoc WHERE content_id=$content_id";
 390 //              $result = mysql_query($sql, $this->db);
 391
 392                 /* Delete all AccessForAll contents */
 393 //              require_once(TR_INCLUDE_PATH.'classes/A4a/A4a.class.php');
 394 //              $a4a = new A4a($content_id);
 395 //              $a4a->deleteA4a();
 396
 397                 /* remove the "resume" to this page, b/c it was deleted */
 398 //              $sql = "UPDATE ".TABLE_PREFIX."course_enrollment SET last_cid=0 WHERE course_id=$_SESSION[course_id] AND last_cid=$content_id";
 399 //              $result = mysql_query($sql, $this->db);
 400
 401                 return true;
 402         }
 403
 404
 405         /* private. call from deleteContent only. */
 406         function deleteContentRecursive($content_id) {
 407                 /* check if this content has sub content        */
 408                 $children = $this->_menu[$content_id];
 409
 410                 if (is_array($children) && (count($children)>0) ) {
 411                         /* delete its children recursively first*/
 412                         foreach ($children as $x => $info) {
 413                                 if ($info['content_id'] > 0) {
 414                                         $this->deleteContent($info['content_id']);
 415                                 }
 416                         }
 417                 }
 418
 419                 // delete this content page
 420                 $this->contentDAO->Delete($content_id);
 421 //              $sql    = "DELETE FROM ".TABLE_PREFIX."content WHERE content_id=$content_id AND course_id=$_SESSION[course_id]";
 422 //              $result = mysql_query($sql, $this->db);
 423
 424                 /* delete this content from member tracking page        */
 425 //              $sql    = "DELETE FROM ".TABLE_PREFIX."member_track WHERE content_id=$content_id";
 426 //              $result = mysql_query($sql, $this->db);
 427
 428                 /* delete the content tests association */
 429 //              $sql    = "DELETE FROM ".TABLE_PREFIX."content_tests_assoc WHERE content_id=$content_id";
 430 //              $result = mysql_query($sql, $this->db);
 431         }
 432
 433         function getContentPage($content_id) {
 434                 include_once(TR_INCLUDE_PATH.'classes/DAO/ContentDAO.class.php');
 435                 $contentDAO = new ContentDAO();
 436                 return $contentDAO->get($content_id);
 437         }
 438
 439         /**
 440          * Return a list of tests associated with the selected content
 441          * @param       int             the content id that all tests are associated with it.
 442          * @return      array   list of tests
 443          * @date        Sep 10, 2008
 444          * @author      Harris
 445          */
 446         function & getContentTestsAssoc($content_id){
 447                 $sql    = "SELECT ct.test_id, t.title
 448                              FROM (SELECT * FROM ".TABLE_PREFIX."content_tests_assoc
 449                                     WHERE content_id=$content_id) AS ct
 450                              LEFT JOIN ".TABLE_PREFIX."tests t ON ct.test_id=t.test_id
 451                             ORDER BY t.title";
 452                 return $this->dao->execute($sql);
 453         }
 454
 455         function & cleanOutput($value) {
 456                 return stripslashes(htmlspecialchars($value));
 457         }
 458
 459
 460         /* @See include/html/editor_tabs/properties.inc.php */
 461         /* Access: Public */
 462         function getNumSections() {
 463                 return $this->num_sections;
 464         }
 465
 466         /* Access: Public */
 467         function getMaxDepth() {
 468                 return $this->max_depth;
 469         }
 470
 471         /* Access: Public */
 472         function getContentLength() {
 473                 return $this->content_length;
 474         }
 475
 476         /* @See include/html/dropdowns/local_menu.inc.php */
 477         function getLocationPositions($parent_id, $content_id) {
 478                 $siblings = $this->getContent($parent_id);
 479                 for ($i=0;$i<count($siblings); $i++){
 480                         if ($siblings[$i]['content_id'] == $content_id) {
 481                                 return $i;
 482                         }
 483                 }
 484                 return 0;
 485         }
 486
 487         /* Access: Private */
 488         function getNumbering($content_id) {
 489                 $path = $this->getContentPath($content_id);
 490                 $parent = 0;
 491                 $numbering = '';
 492                 foreach ($path as $page) {
 493                         $num = $this->getLocationPositions($parent, $page['content_id']) +1;
 494                         $parent = $page['content_id'];
 495                         $numbering .= $num.'.';
 496                 }
 497                 $numbering = substr($numbering, 0, -1);
 498
 499                 return $numbering;
 500         }
 501
 502         function getPreviousContent($content_id) {
 503                 if (is_array($this->_menu_in_order))
 504                 {
 505                         foreach ($this->_menu_in_order as $content_location => $this_content_id)
 506                         {
 507                                 if ($this_content_id == $content_id) break;
 508                         }
 509
 510                         for ($i=$content_location-1; $i >= 0; $i--)
 511                         {
 512                                 $content_type = $this->_menu_info[$this->_menu_in_order[$i]]['content_type'];
 513
 514                                 if ($content_type == CONTENT_TYPE_CONTENT || $content_type == CONTENT_TYPE_WEBLINK)
 515                                         return array('content_id'       => $this->_menu_in_order[$i],
 516                                                  'ordering'             => $this->_menu_info[$this->_menu_in_order[$i]]['ordering'],
 517                                                      'title'            => $this->_menu_info[$this->_menu_in_order[$i]]['title']);
 518                         }
 519                 }
 520                 return NULL;
 521         }
 522
 523         /**
 524          * return the array of the next content node of the given $content_id
 525          * when $content_id = 0 or is not set, return the first content node
 526          * @param $content_id
 527          * @return an array of the next content node
 528          */
 529         function getNextContent($content_id) {
 530                 if (is_array($this->_menu_in_order))
 531                 {
 532                         // find out the location of the $content_id
 533                         if (!$content_id) $content_location = 0; // the first content location when $content_id = 0 or is not set
 534                         else
 535                         {
 536                                 foreach ($this->_menu_in_order as $content_location => $this_content_id)
 537                                 {
 538                                         if ($this_content_id == $content_id)
 539                                         {
 540                                                 $content_location++;
 541                                                 break;
 542                                         }
 543                                 }
 544                         }
 545
 546                         // the next content node must be at or after the $content_location
 547                         // and with the content type CONTENT or WEBLINK
 548                         for ($i=$content_location; $i < count($this->_menu_in_order); $i++)
 549                         {
 550                                 $content_type = $this->_menu_info[$this->_menu_in_order[$i]]['content_type'];
 551
 552                                 if ($content_type == CONTENT_TYPE_CONTENT || $content_type == CONTENT_TYPE_WEBLINK)
 553                                         return(array('content_id'       => $this->_menu_in_order[$i],
 554                                                  'ordering'             => $this->_menu_info[$this->_menu_in_order[$i]]['ordering'],
 555                                                      'title'            => $this->_menu_info[$this->_menu_in_order[$i]]['title']));
 556                         }
 557                 }
 558                 return NULL;
 559         }
 560
 561         /* @See include/header.inc.php */
 562         function generateSequenceCrumbs($cid) {
 563                 global $_base_path;
 564
 565                 $sequence_links = array();
 566
 567                 $first = $this->getNextContent(0); // get first
 568
 569                 if ($_SESSION['prefs']['PREF_NUMBERING'] && $first) {
 570                         $first['title'] = $this->getNumbering($first['content_id']).' '.$first['title'];
 571                 }
 572                 if ($first) {
 573                         $first['url'] = $_base_path.'home/course/content.php?_cid='.$first['content_id'];
 574                         $sequence_links['first'] = $first;
 575                 }
 576
 577                 if (!$cid && $_SESSION['s_cid']) {
 578                         $resume['title'] = $this->_menu_info[$_SESSION['s_cid']]['title'];
 579
 580                         if ($_SESSION['prefs']['PREF_NUMBERING']) {
 581                                 $resume['title'] = $this->getNumbering($_SESSION['s_cid']).' ' . $resume['title'];
 582                         }
 583
 584                         $resume['url'] = $_base_path.'home/course/content.php?_cid='.$_SESSION['s_cid'];
 585
 586                         $sequence_links['resume'] = $resume;
 587                 } else {
 588                         if ($cid) {
 589                                 $previous = $this->getPreviousContent($cid);
 590                         }
 591                         $next = $this->getNextContent($cid ? $cid : 0);
 592
 593                         if ($_SESSION['prefs']['PREF_NUMBERING']) {
 594                                 $previous['title'] = $this->getNumbering($previous['content_id']).' '.$previous['title'];
 595                                 $next['title'] = $this->getNumbering($next['content_id']).' '.$next['title'];
 596                         }
 597
 598                         $next['url'] = $_base_path.'home/course/content.php?_cid='.$next['content_id'];
 599                         if (isset($previous['content_id'])) {
 600                                 $previous['url'] = $_base_path.'home/course/content.php?_cid='.$previous['content_id'];
 601                         }
 602
 603                         if (isset($previous['content_id'])) {
 604                                 $sequence_links['previous'] = $previous;
 605                         } else if ($cid) {
 606 //                              $previous['url']   = $_base_path . url_rewrite('index.php');
 607 //                              $previous['url']   = $_base_path . 'home/course/index.php';
 608 //                              $previous['title'] = _AT('home');
 609 //                              $sequence_links['previous'] = $previous;
 610                         }
 611                         if (!empty($next['content_id'])) {
 612                                 $sequence_links['next'] = $next;
 613                         }
 614                 }
 615
 616                 return $sequence_links;
 617         }
 618
 619         /** Generate javascript to hide all root content folders, except the one with current content page
 620          * access: private
 621          * @return print out javascript function initContentMenu()
 622          */
 623         function initMenu(){
 624                 global $_base_path, $_course_id;
 625
 626                 echo '
 627 function initContentMenu() {
 628   tree_collapse_icon = "'.$_base_path.'images/tree/tree_collapse.gif";
 629   tree_expand_icon = "'.$_base_path.'images/tree/tree_expand.gif";
 630
 631 ';
 632
 633                 $sql = "SELECT content_id
 634                           FROM ".TABLE_PREFIX."content
 635                          WHERE course_id=$this->course_id
 636                            AND content_type = ".CONTENT_TYPE_FOLDER;
 637                 $rows = $this->dao->execute($sql);
 638
 639                 // collapse all root content folders
 640                 if (is_array($rows)) {
 641                         foreach ($rows as $row) {
 642                                 echo '
 643   if (trans.utility.getcookie("t.c'.$_course_id.'_'.$row['content_id'].'") == "1")
 644   {
 645     jQuery("#folder"+'.$row['content_id'].').show();
 646     jQuery("#tree_icon"+'.$row['content_id'].').attr("src", tree_collapse_icon);
 647     jQuery("#tree_icon"+'.$row['content_id'].').attr("alt", "'._AT("collapse").'");
 648     jQuery("#tree_icon"+'.$row['content_id'].').attr("title", "'._AT("collapse").'");
 649   }
 650   else
 651   {
 652     jQuery("#folder"+'.$row['content_id'].').hide();
 653     jQuery("#tree_icon"+'.$row['content_id'].').attr("src", tree_expand_icon);
 654     jQuery("#tree_icon"+'.$row['content_id'].').attr("alt", "'._AT("expand").'");
 655     jQuery("#tree_icon"+'.$row['content_id'].').attr("title", "'._AT("expand").'");
 656   }
 657 ';
 658                         }
 659                 }
 660
 661                 // expand the content folder that has current content
 662                 if (isset($_SESSION['s_cid']) && $_SESSION['s_cid'] > 0) {
 663                         $current_content_path = $this->getContentPath($_SESSION['s_cid']);
 664
 665                         for ($i=0; $i < count($current_content_path)-1; $i++)
 666                                 echo '
 667   jQuery("#folder"+'.$current_content_path[$i]['content_id'].').show();
 668   jQuery("#tree_icon"+'.$current_content_path[$i]['content_id'].').attr("src", tree_collapse_icon);
 669   jQuery("#tree_icon"+'.$current_content_path[$i]['content_id'].').attr("alt", "'._AT("collapse").'");
 670   trans.utility.setcookie("t.c'.$_course_id.'_'.$current_content_path[$i]['content_id'].'", "1", 1);
 671 ';
 672                 }
 673                 echo '}'; // end of javascript function initContentMenu()
 674         }
 675
 676         /* @See include/html/dropdowns/menu_menu.inc.php */
 677         function printMainMenu( ) {
 678                 global $_current_user, $_course_id;
 679
 680                 if (!($this->course_id > 0)) {
 681                         return;
 682                 }
 683
 684                 global $_base_path;
 685
 686                 $parent_id    = 0;
 687                 $depth        = 0;
 688                 $path         = '';
 689                 $children     = array();
 690                 $truncate     = true;
 691                 $ignore_state = true;
 692
 693                 $this->start = true;
 694
 695                 // if change the location of this line, change function switchEditMode(), else condition accordingly
 696                 echo '<div id="editable_table">';
 697
 698                 if (isset($_current_user) && $_current_user->isAuthor($this->course_id) && !Utility::isMobileTheme())
 699                 {
 700                         echo "\n".'
 701   <div class="menuedit">
 702     <a href="'.$_base_path.'home/editor/edit_content_folder.php?_course_id='.$_course_id.'">
 703       <img id="img_create_top_folder" src="'.$_base_path.'images/mfolder.gif" alt="'._AT("add_top_folder").'" title="'._AT("add_top_folder").'" style="border:0;height:1.2em" />
 704     </a>'."\n".'
 705     <a href="'.$_base_path.'home/editor/edit_content.php?_course_id='.$_course_id.'">
 706       <img id="img_create_top_content" src="'.$_base_path.'images/mpage.gif" alt="'._AT("add_top_page").'" title="'._AT("add_top_page").'" style="border:0;height:1.2em" />
 707     </a>'."\n".'
 708     <a href="javascript:void(0)" onclick="javascript:switchEditMode();">
 709       <img id="img_switch_edit_mode" src="'.$_base_path.'images/medit.gif" alt="'._AT("enter_edit_mode").'" title="'._AT("enter_edit_mode").'" style="border:0;height:1.2em" />
 710     </a>
 711   </div>'."\n";
 712                 }
 713                 $this->printMenu($parent_id, $depth, $path, $children, $truncate, $ignore_state);
 714
 715                 // javascript for inline editor
 716                 echo '
 717 <script type="text/javascript">
 718 ';
 719                 // only expand the content folder that has the current content page
 720                 $this->initMenu();
 721
 722                 echo '
 723 function switchEditMode() {
 724   title_edit = "'._AT("enter_edit_mode").'";
 725   img_edit = "'.$_base_path.'images/medit.gif";
 726
 727   title_view = "'._AT("exit_edit_mode").'";
 728   img_view = "'.$_base_path.'images/mlock.gif";
 729
 730   if (jQuery("#img_switch_edit_mode").attr("src") == img_edit)
 731   {
 732     jQuery("#img_switch_edit_mode").attr("src", img_view);
 733     jQuery("#img_switch_edit_mode").attr("alt", title_view);
 734     jQuery("#img_switch_edit_mode").attr("title", title_view);
 735     inlineEditsSetup();
 736   }
 737   else
 738   { // refresh the content navigation to exit the edit mode
 739     jQuery.post("'. TR_BASE_HREF. 'home/course/refresh_content_nav.php?_course_id='.$_course_id.'", {},
 740                 function(data) {jQuery("#editable_table").replaceWith(data); initContentMenu();});
 741   }
 742 }
 743
 744 function inlineEditsSetup() {
 745   jQuery("#editable_table").find(".inlineEdits").each(function() {
 746     jQuery(this).text(jQuery(this).attr("title"));
 747   });
 748
 749   var tableEdit = fluid.inlineEdits("#editable_table", {
 750     selectors : {
 751       text : ".inlineEdits",
 752       editables : "span:has(span.inlineEdits)"
 753     },
 754     defaultViewText: "",
 755       applyEditPadding: false,
 756       useTooltip: true,
 757       listeners: {
 758         afterFinishEdit : function (newValue, oldValue, editNode, viewNode) {
 759           if (newValue != oldValue)
 760           {
 761             rtn = jQuery.post("'. TR_BASE_HREF. 'home/course/content_nav_inline_editor_submit.php", { "field":viewNode.id, "value":newValue },
 762                   function(data) {}, "json");
 763           }
 764         }
 765       }
 766    });
 767
 768   jQuery(".fl-inlineEdit-edit").css("width", "80px")
 769 };
 770
 771 initContentMenu();
 772 </script>
 773 ';
 774                 echo '</div>';
 775         }
 776
 777         /* @See tools/sitemap/index.php */
 778         function printSiteMapMenu() {
 779                 $parent_id    = 0;
 780                 $depth        = 1;
 781                 $path         = '';
 782                 $children     = array();
 783                 $truncate     = false;
 784                 $ignore_state = true;
 785
 786                 $this->start = true;
 787                 $this->printMenu($parent_id, $depth, $path, $children, $truncate, $ignore_state, 'sitemap');
 788         }
 789
 790         /* @See index.php */
 791         function printTOCMenu($cid, $top_num) {
 792                 $parent_id    = $cid;
 793                 $depth        = 1;
 794                 $path         = $top_num.'.';
 795                 $children     = array();
 796                 $truncate     = false;
 797                 $ignore_state = false;
 798
 799                 $this->start = true;
 800                 $this->printMenu($parent_id, $depth, $path, $children, $truncate, $ignore_state);
 801         }
 802
 803         /* @See index.php include/html/dropdowns/local_menu.inc.php */
 804         function printSubMenu($cid, $top_num) {
 805                 $parent_id    = $cid;
 806                 $depth        = 1;
 807                 $path         = $top_num.'.';
 808                 $children     = array();
 809                 $truncate     = true;
 810                 $ignore_state = false;
 811
 812                 $this->start = true;
 813                 $this->printMenu($parent_id, $depth, $path, $children, $truncate, $ignore_state);
 814         }
 815
 816         /* @See include/html/menu_menu.inc.php  */
 817         /* Access: PRIVATE */
 818         function printMenu($parent_id, $depth, $path, $children, $truncate, $ignore_state, $from = '') {
 819                 global $cid, $_my_uri, $_base_path, $rtl, $substr, $strlen, $_current_user;
 820                 static $temp_path;
 821
 822                 if (!isset($temp_path)) {
 823                         if ($cid) {
 824                                 $temp_path      = $this->getContentPath($cid);
 825                         } else {
 826                                 $temp_path      = $this->getContentPath($_SESSION['s_cid']);
 827                         }
 828                 }
 829
 830                 $highlighted = array();
 831                 if (is_array($temp_path)) {
 832                         foreach ($temp_path as $temp_path_item) {
 833                                 $_SESSION['menu'][$temp_path_item['content_id']] = 1;
 834                                 $highlighted[$temp_path_item['content_id']] = true;
 835                         }
 836                 }
 837
 838                 if ($this->start) {
 839                         reset($temp_path);
 840                         $this->start = false;
 841                 }
 842
 843                 if ( isset($this->_menu[$parent_id]) && is_array($this->_menu[$parent_id]) ) {
 844                         $top_level = $this->_menu[$parent_id];
 845                         $counter = 1;
 846                         $num_items = count($top_level);
 847
 848 //                      if ($parent_id <> 0) echo '<li>';
 849
 850 //                      echo '<ul id="folder'.$parent_id.$from.'">'."\n";
 851                         echo '<div id="folder'.$parent_id.$from.'">'."\n";
 852
 853                         foreach ($top_level as $garbage => $content) {
 854                                 $link = '';
 855                                 //tests do not have content id
 856                                 $content['content_id'] = isset($content['content_id']) ? $content['content_id'] : '';
 857
 858                                 if (!$ignore_state) {
 859                                         $link .= '<a name="menu'.$content['content_id'].'"></a>';
 860                                 }
 861
 862                                 $on = false;
 863
 864                                 if ( (($_SESSION['s_cid'] != $content['content_id']) || ($_SESSION['s_cid'] != $cid)) && ($content['content_type'] == CONTENT_TYPE_CONTENT || $content['content_type'] == CONTENT_TYPE_WEBLINK))
 865                                 { // non-current content nodes with content type "CONTENT_TYPE_CONTENT"
 866                                         if (isset($highlighted[$content['content_id']])) {
 867                                                 $link .= '<strong>';
 868                                                 $on = true;
 869                                         }
 870
 871                                         //content test extension  @harris
 872                                         //if this is a test link.
 873                                         if (isset($content['test_id'])){
 874                                                 $title_n_alt =  $content['title'];
 875                                                 $in_link = $_base_path.'tests/preview.php?tid='.$content['test_id'].'&_cid='.$parent_id;
 876                                                 $img_link = ' <img src="'.$_base_path.'images/check.gif" title="'.$title_n_alt.'" alt="'.$title_n_alt.'" />';
 877                                         } else {
 878                                                 $in_link = $_base_path.'home/course/content.php?_cid='.$content['content_id'];
 879                                                 $img_link = '';
 880                                         }
 881
 882                                         $full_title = $content['title'];
 883 //                                      $link .= $img_link . ' <a href="'.$_base_path.url_rewrite($in_link).'" title="';
 884                                         $link .= $img_link . ' <a href="'.$in_link.'" title="';
 885                                         $base_title_length = 29;
 886                                         if ($_SESSION['prefs']['PREF_NUMBERING']) {
 887 //                                              $link .= $path.$counter.' ';
 888                                                 $base_title_length = 24;
 889                                         }
 890
 891                                         $link .= $content['title'].'">';
 892
 893                                         if ($truncate && ($strlen($content['title']) > ($base_title_length-$depth*4)) ) {
 894                                                 $content['title'] = htmlspecialchars(rtrim($substr(htmlspecialchars_decode($content['title']), 0, ($base_title_length-$depth*4)-4))).'...';
 895                                         }
 896 //                                      $content['title'] = htmlspecialchars(rtrim($substr(htmlspecialchars_decode($content['title']), 0, $base_title_length-4))).'...';
 897
 898                                         if (isset($content['test_id']))
 899                                                 $link .= $content['title'];
 900                                         else
 901                                                 $link .= '<span class="inlineEdits" id="menu-'.$content['content_id'].'" title="'.$full_title.'">'.
 902                                                          ($_SESSION['prefs']['PREF_NUMBERING'] ? $path.$counter.'&nbsp;' : '').
 903                                                          $content['title'].'</span>';
 904
 905                                         $link .= '</a>';
 906                                         if ($on) {
 907                                                 $link .= '</strong>';
 908                                         }
 909
 910                                         // instructors have privilege to delete content
 911                                         if (isset($_current_user) && $_current_user->isAuthor($this->course_id) && !isset($content['test_id']) && !Utility::isMobileTheme()) {
 912                                                 $link .= '<a href="'.$_base_path.'home/editor/delete_content.php?_cid='.$content['content_id'].'"><img src="'.TR_BASE_HREF.'images/x.gif" alt="'._AT("delete_content").'" title="'._AT("delete_content").'" style="border:0" height="10" /></a>';
 913                                         }
 914                                 }
 915                                 else
 916                                 { // current content page & nodes with content type "CONTENT_TYPE_FOLDER"
 917                                         $base_title_length = 26;
 918                                         if ($_SESSION['prefs']['PREF_NUMBERING']) {
 919                                                 $base_title_length = 21;
 920                                         }
 921
 922                                         if (isset($highlighted[$content['content_id']])) {
 923                                                 $link .= '<strong>';
 924                                                 $on = true;
 925                                         }
 926
 927                                         if ($content['content_type'] == CONTENT_TYPE_CONTENT || $content['content_type'] == CONTENT_TYPE_WEBLINK)
 928                                         { // current content page
 929                                                 $full_title = $content['title'];
 930                                                 $link .= '<a href="'.$_my_uri.'"><img src="'.$_base_path.'images/clr.gif" alt="'._AT('you_are_here').': '.
 931                                                          ($_SESSION['prefs']['PREF_NUMBERING'] ? $path.$counter : '').
 932                                                          $content['title'].'" height="1" width="1" border="0" /></a><strong style="color:red" title="'.$content['title'].'">'."\n";
 933
 934                                                 if ($truncate && ($strlen($content['title']) > ($base_title_length-$depth*4)) ) {
 935                                                         $content['title'] = htmlspecialchars(rtrim($substr(htmlspecialchars_decode($content['title']), 0, ($base_title_length-$depth*4)-4))).'...';
 936                                                 }
 937 //                                              $content['title'] = htmlspecialchars(rtrim($substr(htmlspecialchars_decode($content['title']), 0, $base_title_length-4))).'...';
 938                                                 $link .= '<a name="menu'.$content['content_id'].'"></a><span class="inlineEdits" id="menu-'.$content['content_id'].'" title="'.$full_title.'">'.
 939                                                          ($_SESSION['prefs']['PREF_NUMBERING'] ? $path.$counter.'&nbsp;' : '').
 940                                                          $content['title'].'</span></strong>';
 941
 942                                                 // instructors have privilege to delete content
 943                                                 if (isset($_current_user) && $_current_user->isAuthor($this->course_id) && !Utility::isMobileTheme()) {
 944                                                         $link .= '<a href="'.$_base_path.'home/editor/delete_content.php?_cid='.$content['content_id'].'"><img src="'.TR_BASE_HREF.'images/x.gif" alt="'._AT("delete_content").'" title="'._AT("delete_content").'" style="border:0" height="10" /></a>';
 945                                                 }
 946                                         }
 947                                         else
 948                                         { // nodes with content type "CONTENT_TYPE_FOLDER"
 949 //                                              $link .= '<a href="javascript:void(0)" onclick="javascript: trans.utility.toggleFolder(\''.$content['content_id'].$from.'\'); "><img src="'.$_base_path.'images/clr.gif" alt="'._AT('content_folder').': '.$content['title'].'" height="1" width="1" border="0" /></a>'."\n";
 950
 951                                                 $full_title = $content['title'];
 952                                                 if (isset($_current_user) && $_current_user->isAuthor($this->course_id) && !Utility::isMobileTheme()) {
 953 //                                                      $link .= '<a href="'.$_base_path.url_rewrite("editor/edit_content_folder.php?_cid=".$content['content_id']).'" title="'.$full_title. _AT('click_edit').'">'."\n";
 954                                                         $link .= '<a href="'.$_base_path.'home/editor/edit_content_folder.php?_cid='.$content['content_id'].'" title="'.$full_title. _AT('click_edit').'">'."\n";
 955                                                 }
 956                                                 else {
 957                                                         $link .= '<span style="cursor:pointer" onclick="javascript: trans.utility.toggleFolder(\''.$content['content_id'].$from.'\', \''._AT("expand").'\', \''._AT('collapse').'\', '.$this->course_id.'); ">'."\n";
 958                                                 }
 959
 960                                                 if ($truncate && ($strlen($content['title']) > ($base_title_length-$depth*4)) ) {
 961                                                         $content['title'] = htmlspecialchars(rtrim($substr(htmlspecialchars_decode($content['title']), 0, ($base_title_length-$depth*4)-4))).'...';
 962                                                 }
 963 //                                              $content['title'] = htmlspecialchars(rtrim($substr(htmlspecialchars_decode($content['title']), 0, $base_title_length-4))).'...';
 964                                                 if (isset($content['test_id']))
 965                                                         $link .= $content['title'];
 966                                                 else
 967                                                         $link .= '<span class="inlineEdits" id="menu-'.$content['content_id'].'" title="'.$full_title.'">'.
 968                                                                  ($_SESSION['prefs']['PREF_NUMBERING'] ? $path.$counter.'&nbsp;' : '').
 969                                                                  $content['title'].'</span>';
 970
 971                                                 if (isset($_current_user) && $_current_user->isAuthor($this->course_id) && !Utility::isMobileTheme()) {
 972                                                         $link .= '</a>'."\n";
 973                                                 }
 974                                                 else {
 975                                                         $link .= '</span>'."\n";
 976                                                 }
 977
 978                                                 // instructors have privilege to delete content
 979                                                 if (isset($_current_user) && $_current_user->isAuthor($this->course_id) && !Utility::isMobileTheme()) {
 980                                                         $link .= '<a href="'.$_base_path.'home/editor/delete_content.php?_cid='.$content['content_id'].'"><img src="'.TR_BASE_HREF.'images/x.gif" alt="'._AT("delete_content").'" title="'._AT("delete_content").'" style="border:0" height="10" /></a>';
 981                                                 }
 982 //                                              echo '<div id="folder_content_'.$content['content_id'].'">';
 983                                         }
 984
 985                                         if ($on) {
 986                                                 $link .= '</strong>';
 987                                         }
 988                                 }
 989
 990                                 if ($ignore_state) {
 991                                         $on = true;
 992                                 }
 993
 994 //                              echo '<li>'."\n";
 995                                 echo '<span>'."\n";
 996
 997                                 if ( isset($this->_menu[$content['content_id']]) && is_array($this->_menu[$content['content_id']]) ) {
 998                                         /* has children */
 999                                         for ($i=0; $i<$depth; $i++) {
1000                                                 if ($children[$i] == 1) {
1001                                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_vertline.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1002                                                 } else {
1003                                                         echo '<img src="'.$_base_path.'images/clr.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1004                                                 }
1005                                         }
1006
1007                                         if (($counter == $num_items) && ($depth > 0)) {
1008                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_end.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1009                                                 $children[$depth] = 0;
1010                                         } else if ($counter == $num_items) {
1011                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_end.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1012                                                 $children[$depth] = 0;
1013                                         } else {
1014                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_split.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1015                                                 $children[$depth] = 1;
1016                                         }
1017
1018                                         if ($_SESSION['s_cid'] == $content['content_id']) {
1019                                                 if (is_array($this->_menu[$content['content_id']])) {
1020                                                         $_SESSION['menu'][$content['content_id']] = 1;
1021                                                 }
1022                                         }
1023
1024                                         if (isset($_SESSION['menu'][$content['content_id']]) && $_SESSION['menu'][$content['content_id']] == 1) {
1025                                                 if ($on) {
1026 //                                                      echo '<img src="'.$_base_path.'images/tree/tree_collapse.gif" id="tree_icon'.$content['content_id'].$from.'" alt="'._AT('collapse').'" border="0" width="16" height="16" title="'._AT('collapse').'" class="img-size-tree" onclick="javascript: trans.utility.toggleFolder(\''.$content['content_id'].$from.'\'); " />'."\n";
1027                                                         echo '<a href="javascript:void(0)" onclick="javascript: trans.utility.toggleFolder(\''.$content['content_id'].$from.'\', \''._AT("expand").'\', \''._AT('collapse').'\', '.$this->course_id.'); "><img src="'.$_base_path.'images/tree/tree_collapse.gif" id="tree_icon'.$content['content_id'].$from.'" alt="'._AT('collapse').'" border="0" width="16" height="16" title="'._AT('collapse').'" class="img-size-tree" /></a>'."\n";
1028
1029                                                 } else {
1030                                                         echo '<a href="'.$_my_uri.'collapse='.$content['content_id'].'">'."\n";
1031                                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_collapse.gif" id="tree_icon'.$content['content_id'].$from.'" alt="'._AT('collapse').'" border="0" width="16" height="16" title="'._AT('collapse').' '.$content['title'].'" class="img-size-tree" onclick="javascript: trans.utility.toggleFolder(\''.$content['content_id'].$from.'\', \''._AT("expand").'\', \''._AT('collapse').'\', '.$this->course_id.'); " />'."\n";
1032                                                         echo '</a>'."\n";
1033                                                 }
1034                                         } else {
1035                                                 if ($on) {
1036 //                                                      echo '<img src="'.$_base_path.'images/tree/tree_collapse.gif" id="tree_icon'.$content['content_id'].$from.'" alt="'._AT('collapse').'" border="0" width="16" height="16" title="'._AT('collapse').'" class="img-size-tree" />'."\n";
1037                                                         echo '<a href="javascript:void(0)" onclick="javascript: trans.utility.toggleFolder(\''.$content['content_id'].$from.'\', \''._AT("expand").'\', \''._AT('collapse').'\', '.$this->course_id.'); "><img src="'.$_base_path.'images/tree/tree_collapse.gif" id="tree_icon'.$content['content_id'].$from.'" alt="'._AT('collapse').'" border="0" width="16" height="16" title="'._AT('collapse').'" class="img-size-tree" /></a>'."\n";
1038
1039                                                 } else {
1040                                                         echo '<a href="'.$_my_uri.'expand='.$content['content_id'].'">'."\n";
1041                                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_expand.gif" id="tree_icon'.$content['content_id'].$from.'" alt="'._AT('expand').'" border="0" width="16" height="16"    title="'._AT('expand').' '.$content['title'].'" class="img-size-tree" onclick="javascript: trans.utility.toggleFolder(\''.$content['content_id'].$from.'\', \''._AT("expand").'\', \''._AT('collapse').'\', '.$this->course_id.'); " />';
1042                                                         echo '</a>'."\n";
1043                                                 }
1044                                         }
1045
1046                                 } else {
1047                                         /* doesn't have children */
1048                                         if ($counter == $num_items) {
1049                                                 for ($i=0; $i<$depth; $i++) {
1050                                                         if ($children[$i] == 1) {
1051                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_vertline.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1052                                                         } else {
1053                                                                 echo '<img src="'.$_base_path.'images/clr.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1054                                                         }
1055                                                 }
1056                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_end.gif" alt="" border="0" class="img-size-tree" />'."\n";
1057                                         } else {
1058                                                 for ($i=0; $i<$depth; $i++) {
1059                                                         if ($children[$i] == 1) {
1060                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_vertline.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1061                                                         } else {
1062                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_space.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1063                                                         }
1064                                                 }
1065                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_split.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1066                                         }
1067                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_horizontal.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1068                                 }
1069
1070 //                              if ($_SESSION['prefs']['PREF_NUMBERING']) {
1071 //                                      echo $path.$counter;
1072 //                              }
1073
1074                                 echo $link;
1075
1076                                 echo "\n<br /></span>\n\n";
1077
1078                                 if ( $ignore_state || (isset($_SESSION['menu'][$content['content_id']]) && $_SESSION['menu'][$content['content_id']] == 1)) {
1079
1080                                         $depth ++;
1081
1082                                         $this->printMenu($content['content_id'],
1083                                                                                 $depth,
1084                                                                                 $path.$counter.'.',
1085                                                                                 $children,
1086                                                                                 $truncate,
1087                                                                                 $ignore_state,
1088                                                                                 $from);
1089
1090
1091                                         $depth--;
1092
1093                                 }
1094                                 $counter++;
1095                         } // end of foreach
1096 //                      echo "</ul>";
1097 //                      if ($parent_id <> 0) print "</li>\n\n";
1098                         print "</div>\n\n";
1099                 }
1100         }
1101
1102         /* @See include/html/editor_tabs/properties.inc.php
1103            @See editor/arrange_content.php
1104             $print_type: "movable" or "related_content"
1105          */
1106         function printActionMenu($menu, $parent_id, $depth, $path, $children, $print_type = 'movable') {
1107
1108                 global $cid, $_my_uri, $_base_path, $rtl;
1109
1110                 static $end;
1111
1112                 $top_level = $menu[$parent_id];
1113
1114                 if ( is_array($top_level) ) {
1115                         $counter = 1;
1116                         $num_items = count($top_level);
1117                         foreach ($top_level as $current_num => $content) {
1118                                 if (isset($content['test_id'])){
1119                                         continue;
1120                                 }
1121
1122                                 $link = $buttons = '';
1123
1124                                 echo '<tr>'."\n";
1125
1126                                 if ($print_type == 'movable')
1127                                 {
1128                                         if ($content['content_id'] == $_POST['moved_cid']) {
1129                                                 $radio_selected = ' checked="checked" ';
1130                                         }
1131                                         else {
1132                                                 $radio_selected = '';
1133                                         }
1134
1135                                         $buttons = '<td>'."\n".
1136                                                    '   <small>'."\n".
1137                                                    '      <input type="image" name="move['.$parent_id.'_'.$content['ordering'].']" src="'.$_base_path.'images/before.gif" alt="'._AT('before_topic', $content['title']).'" title="'._AT('before_topic', $content['title']).'" style="height:1.5em; width:1.9em;" />'."\n";
1138
1139                                         if ($current_num + 1 == count($top_level))
1140                                                 $buttons .= '      <input type="image" name="move['.$parent_id.'_'.($content['ordering']+1).']" src="'.$_base_path.'images/after.gif" alt="'._AT('after_topic', $content['title']).'" title="'._AT('after_topic', $content['title']).'" style="height:1.5em; width:1.9em;" />'."\n";
1141
1142                                         $buttons .= '   </small>'."\n".
1143                                                    '</td>'."\n".
1144                                                    '<td>';
1145
1146                                         if ($content['content_type'] == CONTENT_TYPE_FOLDER)
1147                                                 $buttons .= '<input type="image" name="move['.$content['content_id'].'_1]" src="'.$_base_path.'images/child_of.gif" style="height:1.25em; width:1.7em;" alt="'._AT('child_of', $content['title']).'" title="'._AT('child_of', $content['title']).'" />';
1148                                         else
1149                                                 $buttons .= '&nbsp;';
1150
1151                                         $buttons .= '</td>'."\n".
1152                                                    '<td><input name="moved_cid" value="'.$content['content_id'].'" type="radio" id="r'.$content['content_id'].'" '.$radio_selected .'/></td>'."\n";
1153                                 }
1154
1155                                 $buttons .= '<td>'."\n";
1156                                 if ($print_type == "related_content")
1157                                 {
1158                                         if ($content['content_type'] == CONTENT_TYPE_CONTENT || $content['content_type'] == CONTENT_TYPE_WEBLINK)
1159                                         {
1160                                                 $link .= '<input type="checkbox" name="related[]" value="'.$content['content_id'].'" id="r'.$content['content_id'].'" ';
1161                                                 if (isset($_POST['related']) && in_array($content['content_id'], $_POST['related'])) {
1162                                                         $link .= ' checked="checked"';
1163                                                 }
1164                                                 $link .= ' />'."\n";
1165                                         }
1166                                 }
1167
1168                                 if ($content['content_type'] == CONTENT_TYPE_FOLDER)
1169                                 {
1170                                         $link .= '<img src="'.$_base_path.'images/folder.gif" />';
1171                                 }
1172                                 $link .= '&nbsp;<label for="r'.$content['content_id'].'">'.$content['title'].'</label>'."\n";
1173
1174                                 if ( is_array($menu[$content['content_id']]) && !empty($menu[$content['content_id']]) ) {
1175                                         /* has children */
1176
1177                                         for ($i=0; $i<$depth; $i++) {
1178                                                 if ($children[$i] == 1) {
1179                                                         echo $buttons;
1180                                                         unset($buttons);
1181                                                         if ($end && ($i==0)) {
1182                                                                 echo '<img src="'.$_base_path.'images/clr.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />';
1183                                                         } else {
1184                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_vertline.gif" alt="" border="0" width="16" height="16" />';
1185                                                         }
1186                                                 } else {
1187                                                         echo '<img src="'.$_base_path.'images/clr.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />';
1188                                                 }
1189                                         }
1190
1191                                         if (($counter == $num_items) && ($depth > 0)) {
1192                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_end.gif" alt="" border="0" width="16" height="16" />';
1193                                                 $children[$depth] = 0;
1194                                         } else {
1195                                                 echo $buttons;
1196                                                 if (($num_items == $counter) && ($parent_id == 0)) {
1197                                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_end.gif" alt="" border="0" width="16" height="16" />';
1198                                                         $end = true;
1199                                                 } else {
1200                                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_split.gif" alt="" border="0" width="16" height="16" />';
1201                                                 }
1202                                                 $children[$depth] = 1;
1203                                         }
1204
1205                                         if ($_SESSION['s_cid'] == $content['content_id']) {
1206                                                 if (is_array($menu[$content['content_id']])) {
1207                                                         $_SESSION['menu'][$content['content_id']] = 1;
1208                                                 }
1209                                         }
1210
1211                                         if ($_SESSION['menu'][$content['content_id']] == 1) {
1212                                                 echo '<img src="'.$_base_path.'images/tree/tree_disabled.gif" alt="'._AT('toggle_disabled').'" border="0" width="16" height="16" title="'._AT('toggle_disabled').'" />';
1213
1214                                         } else {
1215                                                 echo '<img src="'.$_base_path.'images/tree/tree_disabled.gif" alt="'._AT('toggle_disabled').'" border="0" width="16" height="16" title="'._AT('toggle_disabled').'" />';
1216                                         }
1217
1218                                 } else {
1219                                         /* doesn't have children */
1220                                         if ($counter == $num_items) {
1221                                                 if ($depth) {
1222                                                         echo $buttons;
1223                                                         for ($i=0; $i<$depth; $i++) {
1224                                                                 if ($children[$i] == 1) {
1225                                                                         if ($end && ($i == 0)) {
1226                                                                                 echo '<img src="'.$_base_path.'images/clr.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />';
1227                                                                         } else {
1228                                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_vertline.gif" alt="" border="0" width="16" height="16" />';
1229                                                                         }
1230                                                                 } else {
1231                                                                         echo '<img src="'.$_base_path.'images/clr.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />';
1232                                                                 }
1233                                                         }
1234                                                 } else {
1235                                                         echo $buttons;
1236                                                 }
1237                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_end.gif" alt="" border="0" />';
1238                                         } else {
1239                                                 if ($depth) {
1240                                                         echo $buttons;
1241                                                         $print = false;
1242                                                         for ($i=0; $i<$depth; $i++) {
1243                                                                 if ($children[$i] == 1) {
1244                                                                         if ($end && !$print) {
1245                                                                                 $print = true;
1246                                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_space.gif" alt="" border="0" width="16" height="16" />';
1247                                                                         } else {
1248                                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_vertline.gif" alt="" border="0" width="16" height="16" />';
1249                                                                         }
1250                                                                 } else {
1251                                                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_space.gif" alt="" border="0" width="16" height="16" />';
1252                                                                 }
1253                                                         }
1254                                                         $print = false;
1255                                                 } else {
1256                                                         echo $buttons;
1257                                                 }
1258
1259                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_split.gif" alt="" border="0" width="16" height="16" />';
1260                                         }
1261                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_horizontal.gif" alt="" border="0" width="16" height="16" />';
1262                                 }
1263
1264                                 echo '<small> '.($_SESSION['prefs']['PREF_NUMBERING'] ? $path.$counter : '');
1265
1266                                 echo $link;
1267
1268                                 echo '</small></td>'."\n".'</tr>'."\n";
1269
1270                                 $this->printActionMenu($menu,
1271                                                                         $content['content_id'],
1272                                                                         ++$depth,
1273                                                                         $path.$counter.'.',
1274                                                                         $children,
1275                                                                         $print_type);
1276                                 $depth--;
1277
1278                                 $counter++;
1279                         }
1280                 }
1281         }
1282 }
1283
1284 ?>