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                 // unset last-visited content id
 374                 require_once(TR_INCLUDE_PATH.'classes/DAO/UserCoursesDAO.class.php');
 375                 $userCoursesDAO = new UserCoursesDAO();
 376                 $userCoursesDAO->UpdateLastCid($_SESSION['user_id'], $_course_id, 0);
 377
 378                 unset($_SESSION['s_cid']);
 379                 unset($_SESSION['from_cid']);
 380
 381                 /* delete this content page                                     */
 382 //              $sql    = "DELETE FROM ".TABLE_PREFIX."content WHERE content_id=$content_id AND course_id=$_SESSION[course_id]";
 383 //              $result = mysql_query($sql, $this->db);
 384
 385                 /* delete this content from member tracking page        */
 386 //              $sql    = "DELETE FROM ".TABLE_PREFIX."member_track WHERE content_id=$content_id AND course_id=$_SESSION[course_id]";
 387 //              $result = mysql_query($sql, $this->db);
 388
 389 //              $sql    = "DELETE FROM ".TABLE_PREFIX."related_content WHERE content_id=$content_id OR related_content_id=$content_id";
 390 //              $result = mysql_query($sql, $this->db);
 391
 392                 /* delete the content tests association */
 393 //              $sql    = "DELETE FROM ".TABLE_PREFIX."content_tests_assoc WHERE content_id=$content_id";
 394 //              $result = mysql_query($sql, $this->db);
 395
 396                 /* delete the content forum association */
 397 //              $sql    = "DELETE FROM ".TABLE_PREFIX."content_forums_assoc WHERE content_id=$content_id";
 398 //              $result = mysql_query($sql, $this->db);
 399
 400                 /* Delete all AccessForAll contents */
 401 //              require_once(TR_INCLUDE_PATH.'classes/A4a/A4a.class.php');
 402 //              $a4a = new A4a($content_id);
 403 //              $a4a->deleteA4a();
 404
 405                 /* remove the "resume" to this page, b/c it was deleted */
 406 //              $sql = "UPDATE ".TABLE_PREFIX."course_enrollment SET last_cid=0 WHERE course_id=$_SESSION[course_id] AND last_cid=$content_id";
 407 //              $result = mysql_query($sql, $this->db);
 408
 409                 return true;
 410         }
 411
 412
 413         /* private. call from deleteContent only. */
 414         function deleteContentRecursive($content_id) {
 415                 /* check if this content has sub content        */
 416                 $children = $this->_menu[$content_id];
 417
 418                 if (is_array($children) && (count($children)>0) ) {
 419                         /* delete its children recursively first*/
 420                         foreach ($children as $x => $info) {
 421                                 if ($info['content_id'] > 0) {
 422                                         $this->deleteContent($info['content_id']);
 423                                 }
 424                         }
 425                 }
 426
 427                 // delete this content page
 428                 $this->contentDAO->Delete($content_id);
 429 //              $sql    = "DELETE FROM ".TABLE_PREFIX."content WHERE content_id=$content_id AND course_id=$_SESSION[course_id]";
 430 //              $result = mysql_query($sql, $this->db);
 431
 432                 /* delete this content from member tracking page        */
 433 //              $sql    = "DELETE FROM ".TABLE_PREFIX."member_track WHERE content_id=$content_id";
 434 //              $result = mysql_query($sql, $this->db);
 435
 436                 /* delete the content tests association */
 437 //              $sql    = "DELETE FROM ".TABLE_PREFIX."content_tests_assoc WHERE content_id=$content_id";
 438 //              $result = mysql_query($sql, $this->db);
 439         }
 440
 441         function getContentPage($content_id) {
 442                 include_once(TR_INCLUDE_PATH.'classes/DAO/ContentDAO.class.php');
 443                 $contentDAO = new ContentDAO();
 444                 return $contentDAO->get($content_id);
 445         }
 446
 447         /**
 448          * Return a list of tests associated with the selected content
 449          * @param       int             the content id that all tests are associated with it.
 450          * @return      array   list of tests
 451          * @date        Sep 10, 2008
 452          * @author      Harris
 453          */
 454         function & getContentTestsAssoc($content_id){
 455                 $sql    = "SELECT ct.test_id, t.title
 456                              FROM (SELECT * FROM ".TABLE_PREFIX."content_tests_assoc
 457                                     WHERE content_id=$content_id) AS ct
 458                              LEFT JOIN ".TABLE_PREFIX."tests t ON ct.test_id=t.test_id
 459                             ORDER BY t.title";
 460                 return $this->dao->execute($sql);
 461         }
 462
 463         function & cleanOutput($value) {
 464                 return stripslashes(htmlspecialchars($value));
 465         }
 466
 467
 468         /* @See include/html/editor_tabs/properties.inc.php */
 469         /* Access: Public */
 470         function getNumSections() {
 471                 return $this->num_sections;
 472         }
 473
 474         /* Access: Public */
 475         function getMaxDepth() {
 476                 return $this->max_depth;
 477         }
 478
 479         /* Access: Public */
 480         function getContentLength() {
 481                 return $this->content_length;
 482         }
 483
 484         /* @See include/html/dropdowns/local_menu.inc.php */
 485         function getLocationPositions($parent_id, $content_id) {
 486                 $siblings = $this->getContent($parent_id);
 487                 for ($i=0;$i<count($siblings); $i++){
 488                         if ($siblings[$i]['content_id'] == $content_id) {
 489                                 return $i;
 490                         }
 491                 }
 492                 return 0;
 493         }
 494
 495         /* Access: Private */
 496         function getNumbering($content_id) {
 497                 $path = $this->getContentPath($content_id);
 498                 $parent = 0;
 499                 $numbering = '';
 500                 foreach ($path as $page) {
 501                         $num = $this->getLocationPositions($parent, $page['content_id']) +1;
 502                         $parent = $page['content_id'];
 503                         $numbering .= $num.'.';
 504                 }
 505                 $numbering = substr($numbering, 0, -1);
 506
 507                 return $numbering;
 508         }
 509
 510         function getPreviousContent($content_id) {
 511                 if (is_array($this->_menu_in_order))
 512                 {
 513                         foreach ($this->_menu_in_order as $content_location => $this_content_id)
 514                         {
 515                                 if ($this_content_id == $content_id) break;
 516                         }
 517
 518                         for ($i=$content_location-1; $i >= 0; $i--)
 519                         {
 520                                 $content_type = $this->_menu_info[$this->_menu_in_order[$i]]['content_type'];
 521
 522                                 if ($content_type == CONTENT_TYPE_CONTENT || $content_type == CONTENT_TYPE_WEBLINK)
 523                                         return array('content_id'       => $this->_menu_in_order[$i],
 524                                                  'ordering'             => $this->_menu_info[$this->_menu_in_order[$i]]['ordering'],
 525                                                      'title'            => $this->_menu_info[$this->_menu_in_order[$i]]['title']);
 526                         }
 527                 }
 528                 return NULL;
 529         }
 530
 531         /**
 532          * return the array of the next content node of the given $content_id
 533          * when $content_id = 0 or is not set, return the first content node
 534          * @param $content_id
 535          * @return an array of the next content node
 536          */
 537         function getNextContent($content_id) {
 538                 if (is_array($this->_menu_in_order))
 539                 {
 540                         // find out the location of the $content_id
 541                         if (!$content_id) $content_location = 0; // the first content location when $content_id = 0 or is not set
 542                         else
 543                         {
 544                                 foreach ($this->_menu_in_order as $content_location => $this_content_id)
 545                                 {
 546                                         if ($this_content_id == $content_id)
 547                                         {
 548                                                 $content_location++;
 549                                                 break;
 550                                         }
 551                                 }
 552                         }
 553
 554                         // the next content node must be at or after the $content_location
 555                         // and with the content type CONTENT or WEBLINK
 556                         for ($i=$content_location; $i < count($this->_menu_in_order); $i++)
 557                         {
 558                                 $content_type = $this->_menu_info[$this->_menu_in_order[$i]]['content_type'];
 559
 560                                 if ($content_type == CONTENT_TYPE_CONTENT || $content_type == CONTENT_TYPE_WEBLINK)
 561                                         return(array('content_id'       => $this->_menu_in_order[$i],
 562                                                  'ordering'             => $this->_menu_info[$this->_menu_in_order[$i]]['ordering'],
 563                                                      'title'            => $this->_menu_info[$this->_menu_in_order[$i]]['title']));
 564                         }
 565                 }
 566                 return NULL;
 567         }
 568
 569         /* @See include/header.inc.php */
 570         function generateSequenceCrumbs($cid) {
 571                 global $_base_path;
 572
 573                 $sequence_links = array();
 574
 575                 $first = $this->getNextContent(0); // get first
 576
 577                 if ($_SESSION['prefs']['PREF_NUMBERING'] && $first) {
 578                         $first['title'] = $this->getNumbering($first['content_id']).' '.$first['title'];
 579                 }
 580                 if ($first) {
 581                         $first['url'] = $_base_path.'home/course/content.php?_cid='.$first['content_id'];
 582                         $sequence_links['first'] = $first;
 583                 }
 584
 585                 if (!$cid && $_SESSION['s_cid']) {
 586                         $resume['title'] = $this->_menu_info[$_SESSION['s_cid']]['title'];
 587
 588                         if ($_SESSION['prefs']['PREF_NUMBERING']) {
 589                                 $resume['title'] = $this->getNumbering($_SESSION['s_cid']).' ' . $resume['title'];
 590                         }
 591
 592                         $resume['url'] = $_base_path.'home/course/content.php?_cid='.$_SESSION['s_cid'];
 593
 594                         $sequence_links['resume'] = $resume;
 595                 } else {
 596                         if ($cid) {
 597                                 $previous = $this->getPreviousContent($cid);
 598                         }
 599                         $next = $this->getNextContent($cid ? $cid : 0);
 600
 601                         if ($_SESSION['prefs']['PREF_NUMBERING']) {
 602                                 $previous['title'] = $this->getNumbering($previous['content_id']).' '.$previous['title'];
 603                                 $next['title'] = $this->getNumbering($next['content_id']).' '.$next['title'];
 604                         }
 605
 606                         $next['url'] = $_base_path.'home/course/content.php?_cid='.$next['content_id'];
 607                         if (isset($previous['content_id'])) {
 608                                 $previous['url'] = $_base_path.'home/course/content.php?_cid='.$previous['content_id'];
 609                         }
 610
 611                         if (isset($previous['content_id'])) {
 612                                 $sequence_links['previous'] = $previous;
 613                         } else if ($cid) {
 614 //                              $previous['url']   = $_base_path . url_rewrite('index.php');
 615 //                              $previous['url']   = $_base_path . 'home/course/index.php';
 616 //                              $previous['title'] = _AT('home');
 617 //                              $sequence_links['previous'] = $previous;
 618                         }
 619                         if (!empty($next['content_id'])) {
 620                                 $sequence_links['next'] = $next;
 621                         }
 622                 }
 623
 624                 return $sequence_links;
 625         }
 626
 627         /** Generate javascript to hide all root content folders, except the one with current content page
 628          * access: private
 629          * @return print out javascript function initContentMenu()
 630          */
 631         function initMenu(){
 632                 global $_base_path, $_course_id;
 633
 634                 echo '
 635 function initContentMenu() {
 636   tree_collapse_icon = "'.$_base_path.'images/tree/tree_collapse.gif";
 637   tree_expand_icon = "'.$_base_path.'images/tree/tree_expand.gif";
 638
 639 ';
 640
 641                 $sql = "SELECT content_id
 642                           FROM ".TABLE_PREFIX."content
 643                          WHERE course_id=$this->course_id
 644                            AND content_type = ".CONTENT_TYPE_FOLDER;
 645                 $rows = $this->dao->execute($sql);
 646
 647                 // collapse all root content folders
 648                 if (is_array($rows)) {
 649                         foreach ($rows as $row) {
 650                                 echo '
 651   if (trans.utility.getcookie("t.c'.$_course_id.'_'.$row['content_id'].'") == "1")
 652   {
 653     jQuery("#folder"+'.$row['content_id'].').show();
 654     jQuery("#tree_icon"+'.$row['content_id'].').attr("src", tree_collapse_icon);
 655     jQuery("#tree_icon"+'.$row['content_id'].').attr("alt", "'._AT("collapse").'");
 656     jQuery("#tree_icon"+'.$row['content_id'].').attr("title", "'._AT("collapse").'");
 657   }
 658   else
 659   {
 660     jQuery("#folder"+'.$row['content_id'].').hide();
 661     jQuery("#tree_icon"+'.$row['content_id'].').attr("src", tree_expand_icon);
 662     jQuery("#tree_icon"+'.$row['content_id'].').attr("alt", "'._AT("expand").'");
 663     jQuery("#tree_icon"+'.$row['content_id'].').attr("title", "'._AT("expand").'");
 664   }
 665 ';
 666                         }
 667                 }
 668
 669                 // expand the content folder that has current content
 670                 if (isset($_SESSION['s_cid']) && $_SESSION['s_cid'] > 0) {
 671                         $current_content_path = $this->getContentPath($_SESSION['s_cid']);
 672
 673                         for ($i=0; $i < count($current_content_path)-1; $i++)
 674                                 echo '
 675   jQuery("#folder"+'.$current_content_path[$i]['content_id'].').show();
 676   jQuery("#tree_icon"+'.$current_content_path[$i]['content_id'].').attr("src", tree_collapse_icon);
 677   jQuery("#tree_icon"+'.$current_content_path[$i]['content_id'].').attr("alt", "'._AT("collapse").'");
 678   trans.utility.setcookie("t.c'.$_course_id.'_'.$current_content_path[$i]['content_id'].'", "1", 1);
 679 ';
 680                 }
 681                 echo '}'; // end of javascript function initContentMenu()
 682         }
 683
 684         /* @See include/html/dropdowns/menu_menu.inc.php */
 685         function printMainMenu( ) {
 686                 global $_current_user, $_course_id;
 687
 688                 if (!($this->course_id > 0)) {
 689                         return;
 690                 }
 691
 692                 global $_base_path;
 693
 694                 $parent_id    = 0;
 695                 $depth        = 0;
 696                 $path         = '';
 697                 $children     = array();
 698                 $truncate     = true;
 699                 $ignore_state = true;
 700
 701                 $this->start = true;
 702
 703                 // if change the location of this line, change function switchEditMode(), else condition accordingly
 704                 echo '<div id="editable_table">';
 705
 706                 if (isset($_current_user) && $_current_user->isAuthor($this->course_id) && !Utility::isMobileTheme())
 707                 {
 708                         echo "\n".'
 709   <div class="menuedit">
 710     <a href="'.$_base_path.'home/editor/edit_content_folder.php?_course_id='.$_course_id.'">
 711       <img id="img_create_top_folder" src="'.$_base_path.'images/mfolder.gif" alt="'._AT("add_top_folder").'" title="'._AT("add_top_folder").'" style="border:0;height:1.2em" />
 712     </a>'."\n".'
 713     <a href="'.$_base_path.'home/editor/edit_content.php?_course_id='.$_course_id.'">
 714       <img id="img_create_top_content" src="'.$_base_path.'images/mpage.gif" alt="'._AT("add_top_page").'" title="'._AT("add_top_page").'" style="border:0;height:1.2em" />
 715     </a>'."\n".'
 716     <a href="javascript:void(0)" onclick="javascript:switchEditMode();">
 717       <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" />
 718     </a>
 719   </div>'."\n";
 720                 }
 721                 $this->printMenu($parent_id, $depth, $path, $children, $truncate, $ignore_state);
 722
 723                 // javascript for inline editor
 724                 echo '
 725 <script type="text/javascript">
 726 ';
 727                 // only expand the content folder that has the current content page
 728                 $this->initMenu();
 729
 730                 echo '
 731 function switchEditMode() {
 732   title_edit = "'._AT("enter_edit_mode").'";
 733   img_edit = "'.$_base_path.'images/medit.gif";
 734
 735   title_view = "'._AT("exit_edit_mode").'";
 736   img_view = "'.$_base_path.'images/mlock.gif";
 737
 738   if (jQuery("#img_switch_edit_mode").attr("src") == img_edit)
 739   {
 740     jQuery("#img_switch_edit_mode").attr("src", img_view);
 741     jQuery("#img_switch_edit_mode").attr("alt", title_view);
 742     jQuery("#img_switch_edit_mode").attr("title", title_view);
 743     inlineEditsSetup();
 744   }
 745   else
 746   { // refresh the content navigation to exit the edit mode
 747     jQuery.post("'. TR_BASE_HREF. 'home/course/refresh_content_nav.php?_course_id='.$_course_id.'", {},
 748                 function(data) {jQuery("#editable_table").replaceWith(data); initContentMenu();});
 749   }
 750 }
 751
 752 function inlineEditsSetup() {
 753   jQuery("#editable_table").find(".inlineEdits").each(function() {
 754     jQuery(this).text(jQuery(this).attr("title"));
 755   });
 756
 757   var tableEdit = fluid.inlineEdits("#editable_table", {
 758     selectors : {
 759       text : ".inlineEdits",
 760       editables : "span:has(span.inlineEdits)"
 761     },
 762     defaultViewText: "",
 763       applyEditPadding: false,
 764       useTooltip: true,
 765       listeners: {
 766         afterFinishEdit : function (newValue, oldValue, editNode, viewNode) {
 767           if (newValue != oldValue)
 768           {
 769             rtn = jQuery.post("'. TR_BASE_HREF. 'home/course/content_nav_inline_editor_submit.php", { "field":viewNode.id, "value":newValue },
 770                   function(data) {}, "json");
 771           }
 772         }
 773       }
 774    });
 775
 776   jQuery(".fl-inlineEdit-edit").css("width", "80px")
 777 };
 778
 779 initContentMenu();
 780 </script>
 781 ';
 782                 echo '</div>';
 783         }
 784
 785         /* @See tools/sitemap/index.php */
 786         function printSiteMapMenu() {
 787                 $parent_id    = 0;
 788                 $depth        = 1;
 789                 $path         = '';
 790                 $children     = array();
 791                 $truncate     = false;
 792                 $ignore_state = true;
 793
 794                 $this->start = true;
 795                 $this->printMenu($parent_id, $depth, $path, $children, $truncate, $ignore_state, 'sitemap');
 796         }
 797
 798         /* @See index.php */
 799         function printTOCMenu($cid, $top_num) {
 800                 $parent_id    = $cid;
 801                 $depth        = 1;
 802                 $path         = $top_num.'.';
 803                 $children     = array();
 804                 $truncate     = false;
 805                 $ignore_state = false;
 806
 807                 $this->start = true;
 808                 $this->printMenu($parent_id, $depth, $path, $children, $truncate, $ignore_state);
 809         }
 810
 811         /* @See index.php include/html/dropdowns/local_menu.inc.php */
 812         function printSubMenu($cid, $top_num) {
 813                 $parent_id    = $cid;
 814                 $depth        = 1;
 815                 $path         = $top_num.'.';
 816                 $children     = array();
 817                 $truncate     = true;
 818                 $ignore_state = false;
 819
 820                 $this->start = true;
 821                 $this->printMenu($parent_id, $depth, $path, $children, $truncate, $ignore_state);
 822         }
 823
 824         /* @See include/html/menu_menu.inc.php  */
 825         /* Access: PRIVATE */
 826         function printMenu($parent_id, $depth, $path, $children, $truncate, $ignore_state, $from = '') {
 827                 global $cid, $_my_uri, $_base_path, $rtl, $substr, $strlen, $_current_user;
 828                 static $temp_path;
 829
 830                 if (!isset($temp_path)) {
 831                         if ($cid) {
 832                                 $temp_path      = $this->getContentPath($cid);
 833                         } else {
 834                                 $temp_path      = $this->getContentPath($_SESSION['s_cid']);
 835                         }
 836                 }
 837
 838                 $highlighted = array();
 839                 if (is_array($temp_path)) {
 840                         foreach ($temp_path as $temp_path_item) {
 841                                 $_SESSION['menu'][$temp_path_item['content_id']] = 1;
 842                                 $highlighted[$temp_path_item['content_id']] = true;
 843                         }
 844                 }
 845
 846                 if ($this->start) {
 847                         reset($temp_path);
 848                         $this->start = false;
 849                 }
 850
 851                 if ( isset($this->_menu[$parent_id]) && is_array($this->_menu[$parent_id]) ) {
 852                         $top_level = $this->_menu[$parent_id];
 853                         $counter = 1;
 854                         $num_items = count($top_level);
 855
 856 //                      if ($parent_id <> 0) echo '<li>';
 857
 858 //                      echo '<ul id="folder'.$parent_id.$from.'">'."\n";
 859                         echo '<div id="folder'.$parent_id.$from.'">'."\n";
 860
 861                         foreach ($top_level as $garbage => $content) {
 862                                 $link = '';
 863                                 //tests do not have content id
 864                                 $content['content_id'] = isset($content['content_id']) ? $content['content_id'] : '';
 865
 866                                 if (!$ignore_state) {
 867                                         $link .= '<a name="menu'.$content['content_id'].'"></a>';
 868                                 }
 869
 870                                 $on = false;
 871
 872                                 if ( (($_SESSION['s_cid'] != $content['content_id']) || ($_SESSION['s_cid'] != $cid)) && ($content['content_type'] == CONTENT_TYPE_CONTENT || $content['content_type'] == CONTENT_TYPE_WEBLINK))
 873                                 { // non-current content nodes with content type "CONTENT_TYPE_CONTENT"
 874                                         if (isset($highlighted[$content['content_id']])) {
 875                                                 $link .= '<strong>';
 876                                                 $on = true;
 877                                         }
 878
 879                                         //content test extension  @harris
 880                                         //if this is a test link.
 881                                         if (isset($content['test_id'])){
 882                                                 $title_n_alt =  $content['title'];
 883                                                 $in_link = $_base_path.'tests/preview.php?tid='.$content['test_id'].'&_cid='.$parent_id;
 884                                                 $img_link = ' <img src="'.$_base_path.'images/check.gif" title="'.$title_n_alt.'" alt="'.$title_n_alt.'" />';
 885                                         } else {
 886                                                 $in_link = $_base_path.'home/course/content.php?_cid='.$content['content_id'];
 887                                                 $img_link = '';
 888                                         }
 889
 890                                         $full_title = $content['title'];
 891 //                                      $link .= $img_link . ' <a href="'.$_base_path.url_rewrite($in_link).'" title="';
 892                                         $link .= $img_link . ' <a href="'.$in_link.'" title="';
 893                                         $base_title_length = 29;
 894                                         if ($_SESSION['prefs']['PREF_NUMBERING']) {
 895 //                                              $link .= $path.$counter.' ';
 896                                                 $base_title_length = 24;
 897                                         }
 898
 899                                         $link .= $content['title'].'">';
 900
 901                                         if ($truncate && ($strlen($content['title']) > ($base_title_length-$depth*4)) ) {
 902                                                 $content['title'] = htmlspecialchars(rtrim($substr(htmlspecialchars_decode($content['title']), 0, ($base_title_length-$depth*4)-4))).'...';
 903                                         }
 904 //                                      $content['title'] = htmlspecialchars(rtrim($substr(htmlspecialchars_decode($content['title']), 0, $base_title_length-4))).'...';
 905
 906                                         if (isset($content['test_id']))
 907                                                 $link .= $content['title'];
 908                                         else
 909                                                 $link .= '<span class="inlineEdits" id="menu-'.$content['content_id'].'" title="'.$full_title.'">'.
 910                                                          ($_SESSION['prefs']['PREF_NUMBERING'] ? $path.$counter.'&nbsp;' : '').
 911                                                          $content['title'].'</span>';
 912
 913                                         $link .= '</a>';
 914                                         if ($on) {
 915                                                 $link .= '</strong>';
 916                                         }
 917
 918                                         // instructors have privilege to delete content
 919                                         if (isset($_current_user) && $_current_user->isAuthor($this->course_id) && !isset($content['test_id']) && !Utility::isMobileTheme()) {
 920                                                 $link .= '<a href="'.$_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>';
 921                                         }
 922                                 }
 923                                 else
 924                                 { // current content page & nodes with content type "CONTENT_TYPE_FOLDER"
 925                                         $base_title_length = 26;
 926                                         if ($_SESSION['prefs']['PREF_NUMBERING']) {
 927                                                 $base_title_length = 21;
 928                                         }
 929
 930                                         if (isset($highlighted[$content['content_id']])) {
 931                                                 $link .= '<strong>';
 932                                                 $on = true;
 933                                         }
 934
 935                                         if ($content['content_type'] == CONTENT_TYPE_CONTENT || $content['content_type'] == CONTENT_TYPE_WEBLINK)
 936                                         { // current content page
 937                                                 $full_title = $content['title'];
 938                                                 $link .= '<a href="'.$_my_uri.'"><img src="'.$_base_path.'images/clr.gif" alt="'._AT('you_are_here').': '.
 939                                                          ($_SESSION['prefs']['PREF_NUMBERING'] ? $path.$counter : '').
 940                                                          $content['title'].'" height="1" width="1" border="0" /></a><strong style="color:red" title="'.$content['title'].'">'."\n";
 941
 942                                                 if ($truncate && ($strlen($content['title']) > ($base_title_length-$depth*4)) ) {
 943                                                         $content['title'] = htmlspecialchars(rtrim($substr(htmlspecialchars_decode($content['title']), 0, ($base_title_length-$depth*4)-4))).'...';
 944                                                 }
 945 //                                              $content['title'] = htmlspecialchars(rtrim($substr(htmlspecialchars_decode($content['title']), 0, $base_title_length-4))).'...';
 946                                                 $link .= '<a name="menu'.$content['content_id'].'"></a><span class="inlineEdits" id="menu-'.$content['content_id'].'" title="'.$full_title.'">'.
 947                                                          ($_SESSION['prefs']['PREF_NUMBERING'] ? $path.$counter.'&nbsp;' : '').
 948                                                          $content['title'].'</span></strong>';
 949
 950                                                 // instructors have privilege to delete content
 951                                                 if (isset($_current_user) && $_current_user->isAuthor($this->course_id) && !Utility::isMobileTheme()) {
 952                                                         $link .= '<a href="'.$_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>';
 953                                                 }
 954                                         }
 955                                         else
 956                                         { // nodes with content type "CONTENT_TYPE_FOLDER"
 957 //                                              $link .= '<a href="javascript:void(0)" onclick="javascript: trans.utility.toggleFolder(\''.$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";
 958
 959                                                 $full_title = $content['title'];
 960                                                 if (isset($_current_user) && $_current_user->isAuthor($this->course_id) && !Utility::isMobileTheme()) {
 961 //                                                      $link .= '<a href="'.$_base_path.url_rewrite("editor/edit_content_folder.php?_cid=".$content['content_id']).'" title="'.$full_title. _AT('click_edit').'">'."\n";
 962                                                         $link .= '<a href="'.$_base_path.'home/editor/edit_content_folder.php?_cid='.$content['content_id'].'" title="'.$full_title. _AT('click_edit').'">'."\n";
 963                                                 }
 964                                                 else {
 965                                                         $link .= '<span style="cursor:pointer" onclick="javascript: trans.utility.toggleFolder(\''.$content['content_id'].$from.'\', \''._AT("expand").'\', \''._AT('collapse').'\', '.$this->course_id.'); ">'."\n";
 966                                                 }
 967
 968                                                 if ($truncate && ($strlen($content['title']) > ($base_title_length-$depth*4)) ) {
 969                                                         $content['title'] = htmlspecialchars(rtrim($substr(htmlspecialchars_decode($content['title']), 0, ($base_title_length-$depth*4)-4))).'...';
 970                                                 }
 971 //                                              $content['title'] = htmlspecialchars(rtrim($substr(htmlspecialchars_decode($content['title']), 0, $base_title_length-4))).'...';
 972                                                 if (isset($content['test_id']))
 973                                                         $link .= $content['title'];
 974                                                 else
 975                                                         $link .= '<span class="inlineEdits" id="menu-'.$content['content_id'].'" title="'.$full_title.'">'.
 976                                                                  ($_SESSION['prefs']['PREF_NUMBERING'] ? $path.$counter.'&nbsp;' : '').
 977                                                                  $content['title'].'</span>';
 978
 979                                                 if (isset($_current_user) && $_current_user->isAuthor($this->course_id) && !Utility::isMobileTheme()) {
 980                                                         $link .= '</a>'."\n";
 981                                                 }
 982                                                 else {
 983                                                         $link .= '</span>'."\n";
 984                                                 }
 985
 986                                                 // instructors have privilege to delete content
 987                                                 if (isset($_current_user) && $_current_user->isAuthor($this->course_id) && !Utility::isMobileTheme()) {
 988                                                         $link .= '<a href="'.$_base_path.'home/editor/delete_content.php?_cid='.$content['content_id'].'"><img src="'.TR_BASE_HREF.'images/x.gif" alt="'._AT("delete_content").'" title="'._AT("delete_content").'" style="border:0" height="10" /></a>';
 989                                                 }
 990 //                                              echo '<div id="folder_content_'.$content['content_id'].'">';
 991                                         }
 992
 993                                         if ($on) {
 994                                                 $link .= '</strong>';
 995                                         }
 996                                 }
 997
 998                                 if ($ignore_state) {
 999                                         $on = true;
1000                                 }
1001
1002 //                              echo '<li>'."\n";
1003                                 echo '<span>'."\n";
1004
1005                                 if ( isset($this->_menu[$content['content_id']]) && is_array($this->_menu[$content['content_id']]) ) {
1006                                         /* has children */
1007                                         for ($i=0; $i<$depth; $i++) {
1008                                                 if ($children[$i] == 1) {
1009                                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_vertline.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1010                                                 } else {
1011                                                         echo '<img src="'.$_base_path.'images/clr.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1012                                                 }
1013                                         }
1014
1015                                         if (($counter == $num_items) && ($depth > 0)) {
1016                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_end.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1017                                                 $children[$depth] = 0;
1018                                         } else if ($counter == $num_items) {
1019                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_end.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1020                                                 $children[$depth] = 0;
1021                                         } else {
1022                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_split.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1023                                                 $children[$depth] = 1;
1024                                         }
1025
1026                                         if ($_SESSION['s_cid'] == $content['content_id']) {
1027                                                 if (is_array($this->_menu[$content['content_id']])) {
1028                                                         $_SESSION['menu'][$content['content_id']] = 1;
1029                                                 }
1030                                         }
1031
1032                                         if (isset($_SESSION['menu'][$content['content_id']]) && $_SESSION['menu'][$content['content_id']] == 1) {
1033                                                 if ($on) {
1034 //                                                      echo '<img src="'.$_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";
1035                                                         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";
1036
1037                                                 } else {
1038                                                         echo '<a href="'.$_my_uri.'collapse='.$content['content_id'].'">'."\n";
1039                                                         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";
1040                                                         echo '</a>'."\n";
1041                                                 }
1042                                         } else {
1043                                                 if ($on) {
1044 //                                                      echo '<img src="'.$_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";
1045                                                         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";
1046
1047                                                 } else {
1048                                                         echo '<a href="'.$_my_uri.'expand='.$content['content_id'].'">'."\n";
1049                                                         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.'); " />';
1050                                                         echo '</a>'."\n";
1051                                                 }
1052                                         }
1053
1054                                 } else {
1055                                         /* doesn't have children */
1056                                         if ($counter == $num_items) {
1057                                                 for ($i=0; $i<$depth; $i++) {
1058                                                         if ($children[$i] == 1) {
1059                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_vertline.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1060                                                         } else {
1061                                                                 echo '<img src="'.$_base_path.'images/clr.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1062                                                         }
1063                                                 }
1064                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_end.gif" alt="" border="0" class="img-size-tree" />'."\n";
1065                                         } else {
1066                                                 for ($i=0; $i<$depth; $i++) {
1067                                                         if ($children[$i] == 1) {
1068                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_vertline.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1069                                                         } else {
1070                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_space.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1071                                                         }
1072                                                 }
1073                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_split.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1074                                         }
1075                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_horizontal.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />'."\n";
1076                                 }
1077
1078 //                              if ($_SESSION['prefs']['PREF_NUMBERING']) {
1079 //                                      echo $path.$counter;
1080 //                              }
1081
1082                                 echo $link;
1083
1084                                 echo "\n<br /></span>\n\n";
1085
1086                                 if ( $ignore_state || (isset($_SESSION['menu'][$content['content_id']]) && $_SESSION['menu'][$content['content_id']] == 1)) {
1087
1088                                         $depth ++;
1089
1090                                         $this->printMenu($content['content_id'],
1091                                                                                 $depth,
1092                                                                                 $path.$counter.'.',
1093                                                                                 $children,
1094                                                                                 $truncate,
1095                                                                                 $ignore_state,
1096                                                                                 $from);
1097
1098
1099                                         $depth--;
1100
1101                                 }
1102                                 $counter++;
1103                         } // end of foreach
1104 //                      echo "</ul>";
1105 //                      if ($parent_id <> 0) print "</li>\n\n";
1106                         print "</div>\n\n";
1107                 }
1108         }
1109
1110         /* @See include/html/editor_tabs/properties.inc.php
1111            @See editor/arrange_content.php
1112             $print_type: "movable" or "related_content"
1113          */
1114         function printActionMenu($menu, $parent_id, $depth, $path, $children, $print_type = 'movable') {
1115
1116                 global $cid, $_my_uri, $_base_path, $rtl;
1117
1118                 static $end;
1119
1120                 $top_level = $menu[$parent_id];
1121
1122                 if ( is_array($top_level) ) {
1123                         $counter = 1;
1124                         $num_items = count($top_level);
1125                         foreach ($top_level as $current_num => $content) {
1126                                 if (isset($content['test_id'])){
1127                                         continue;
1128                                 }
1129
1130                                 $link = $buttons = '';
1131
1132                                 echo '<tr>'."\n";
1133
1134                                 if ($print_type == 'movable')
1135                                 {
1136                                         if ($content['content_id'] == $_POST['moved_cid']) {
1137                                                 $radio_selected = ' checked="checked" ';
1138                                         }
1139                                         else {
1140                                                 $radio_selected = '';
1141                                         }
1142
1143                                         $buttons = '<td>'."\n".
1144                                                    '   <small>'."\n".
1145                                                    '      <input type="image" name="move['.$parent_id.'_'.$content['ordering'].']" src="'.$_base_path.'images/before.gif" alt="'._AT('before_topic', $content['title']).'" title="'._AT('before_topic', $content['title']).'" style="height:1.5em; width:1.9em;" />'."\n";
1146
1147                                         if ($current_num + 1 == count($top_level))
1148                                                 $buttons .= '      <input type="image" name="move['.$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";
1149
1150                                         $buttons .= '   </small>'."\n".
1151                                                    '</td>'."\n".
1152                                                    '<td>';
1153
1154                                         if ($content['content_type'] == CONTENT_TYPE_FOLDER)
1155                                                 $buttons .= '<input type="image" name="move['.$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']).'" />';
1156                                         else
1157                                                 $buttons .= '&nbsp;';
1158
1159                                         $buttons .= '</td>'."\n".
1160                                                    '<td><input name="moved_cid" value="'.$content['content_id'].'" type="radio" id="r'.$content['content_id'].'" '.$radio_selected .'/></td>'."\n";
1161                                 }
1162
1163                                 $buttons .= '<td>'."\n";
1164                                 if ($print_type == "related_content")
1165                                 {
1166                                         if ($content['content_type'] == CONTENT_TYPE_CONTENT || $content['content_type'] == CONTENT_TYPE_WEBLINK)
1167                                         {
1168                                                 $link .= '<input type="checkbox" name="related[]" value="'.$content['content_id'].'" id="r'.$content['content_id'].'" ';
1169                                                 if (isset($_POST['related']) && in_array($content['content_id'], $_POST['related'])) {
1170                                                         $link .= ' checked="checked"';
1171                                                 }
1172                                                 $link .= ' />'."\n";
1173                                         }
1174                                 }
1175
1176                                 if ($content['content_type'] == CONTENT_TYPE_FOLDER)
1177                                 {
1178                                         $link .= '<img src="'.$_base_path.'images/folder.gif" />';
1179                                 }
1180                                 $link .= '&nbsp;<label for="r'.$content['content_id'].'">'.$content['title'].'</label>'."\n";
1181
1182                                 if ( is_array($menu[$content['content_id']]) && !empty($menu[$content['content_id']]) ) {
1183                                         /* has children */
1184
1185                                         for ($i=0; $i<$depth; $i++) {
1186                                                 if ($children[$i] == 1) {
1187                                                         echo $buttons;
1188                                                         unset($buttons);
1189                                                         if ($end && ($i==0)) {
1190                                                                 echo '<img src="'.$_base_path.'images/clr.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />';
1191                                                         } else {
1192                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_vertline.gif" alt="" border="0" width="16" height="16" />';
1193                                                         }
1194                                                 } else {
1195                                                         echo '<img src="'.$_base_path.'images/clr.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />';
1196                                                 }
1197                                         }
1198
1199                                         if (($counter == $num_items) && ($depth > 0)) {
1200                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_end.gif" alt="" border="0" width="16" height="16" />';
1201                                                 $children[$depth] = 0;
1202                                         } else {
1203                                                 echo $buttons;
1204                                                 if (($num_items == $counter) && ($parent_id == 0)) {
1205                                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_end.gif" alt="" border="0" width="16" height="16" />';
1206                                                         $end = true;
1207                                                 } else {
1208                                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_split.gif" alt="" border="0" width="16" height="16" />';
1209                                                 }
1210                                                 $children[$depth] = 1;
1211                                         }
1212
1213                                         if ($_SESSION['s_cid'] == $content['content_id']) {
1214                                                 if (is_array($menu[$content['content_id']])) {
1215                                                         $_SESSION['menu'][$content['content_id']] = 1;
1216                                                 }
1217                                         }
1218
1219                                         if ($_SESSION['menu'][$content['content_id']] == 1) {
1220                                                 echo '<img src="'.$_base_path.'images/tree/tree_disabled.gif" alt="'._AT('toggle_disabled').'" border="0" width="16" height="16" title="'._AT('toggle_disabled').'" />';
1221
1222                                         } else {
1223                                                 echo '<img src="'.$_base_path.'images/tree/tree_disabled.gif" alt="'._AT('toggle_disabled').'" border="0" width="16" height="16" title="'._AT('toggle_disabled').'" />';
1224                                         }
1225
1226                                 } else {
1227                                         /* doesn't have children */
1228                                         if ($counter == $num_items) {
1229                                                 if ($depth) {
1230                                                         echo $buttons;
1231                                                         for ($i=0; $i<$depth; $i++) {
1232                                                                 if ($children[$i] == 1) {
1233                                                                         if ($end && ($i == 0)) {
1234                                                                                 echo '<img src="'.$_base_path.'images/clr.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />';
1235                                                                         } else {
1236                                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_vertline.gif" alt="" border="0" width="16" height="16" />';
1237                                                                         }
1238                                                                 } else {
1239                                                                         echo '<img src="'.$_base_path.'images/clr.gif" alt="" border="0" width="16" height="16" class="img-size-tree" />';
1240                                                                 }
1241                                                         }
1242                                                 } else {
1243                                                         echo $buttons;
1244                                                 }
1245                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_end.gif" alt="" border="0" />';
1246                                         } else {
1247                                                 if ($depth) {
1248                                                         echo $buttons;
1249                                                         $print = false;
1250                                                         for ($i=0; $i<$depth; $i++) {
1251                                                                 if ($children[$i] == 1) {
1252                                                                         if ($end && !$print) {
1253                                                                                 $print = true;
1254                                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_space.gif" alt="" border="0" width="16" height="16" />';
1255                                                                         } else {
1256                                                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_vertline.gif" alt="" border="0" width="16" height="16" />';
1257                                                                         }
1258                                                                 } else {
1259                                                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_space.gif" alt="" border="0" width="16" height="16" />';
1260                                                                 }
1261                                                         }
1262                                                         $print = false;
1263                                                 } else {
1264                                                         echo $buttons;
1265                                                 }
1266
1267                                                 echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_split.gif" alt="" border="0" width="16" height="16" />';
1268                                         }
1269                                         echo '<img src="'.$_base_path.'images/'.$rtl.'tree/tree_horizontal.gif" alt="" border="0" width="16" height="16" />';
1270                                 }
1271
1272                                 echo '<small> '.($_SESSION['prefs']['PREF_NUMBERING'] ? $path.$counter : '');
1273
1274                                 echo $link;
1275
1276                                 echo '</small></td>'."\n".'</tr>'."\n";
1277
1278                                 $this->printActionMenu($menu,
1279                                                                         $content['content_id'],
1280                                                                         ++$depth,
1281                                                                         $path.$counter.'.',
1282                                                                         $children,
1283                                                                         $print_type);
1284                                 $depth--;
1285
1286                                 $counter++;
1287                         }
1288                 }
1289         }
1290 }
1291
1292 ?>