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   1  <?php // $Id: index.php,v 1.89.2.5 2008/05/21 12:46:00 thepurpleblob Exp $
   2        // For most people, just lists the course categories
   3        // Allows the admin to create, delete and rename course categories
   4  
   5      require_once("../config.php");
   6      require_once ("lib.php");
   7  
   8      $categoryedit = optional_param('categoryedit', -1,PARAM_BOOL);
   9      $delete   = optional_param('delete',0,PARAM_INT);
  10      $hide     = optional_param('hide',0,PARAM_INT);
  11      $show     = optional_param('show',0,PARAM_INT);
  12      $move     = optional_param('move',0,PARAM_INT);
  13      $moveto   = optional_param('moveto',-1,PARAM_INT);
  14      $moveup   = optional_param('moveup',0,PARAM_INT);
  15      $movedown = optional_param('movedown',0,PARAM_INT);
  16  
  17      $sysctx  = get_context_instance(CONTEXT_SYSTEM);
  18      $context = $sysctx;
  19  
  20      if (!$site = get_site()) {
  21          error('Site isn\'t defined!');
  22      }
  23  
  24      if ($CFG->forcelogin) {
  25          require_login();
  26      }
  27  
  28      if (has_capability('moodle/category:update', $sysctx)) {
  29          if ($categoryedit !== -1) {
  30              $USER->categoryediting = $categoryedit;
  31          }
  32          $adminediting = !empty($USER->categoryediting);
  33      } else {
  34          $adminediting = false;
  35      }
  36  
  37      $stradministration = get_string('administration');
  38      $strcategories = get_string('categories');
  39      $strcategory = get_string('category');
  40      $strcourses = get_string('courses');
  41      $stredit = get_string('edit');
  42      $strdelete = get_string('delete');
  43      $straction = get_string('action');
  44  
  45  
  46  /// Unless it's an editing admin, just print the regular listing of courses/categories
  47  
  48      if (!$adminediting) {
  49  
  50        /// Print form for creating new categories
  51  
  52          $countcategories = count_records('course_categories');
  53  
  54          if ($countcategories > 1 || ($countcategories == 1 && count_records('course') > 200)) {
  55              $strcourses = get_string('courses');
  56              $strcategories = get_string('categories');
  57  
  58              $navlinks = array();
  59              $navlinks[] = array('name'=>$strcategories,'link'=>'','type'=>'misc');
  60              $navigation = build_navigation($navlinks);
  61              print_header("$site->shortname: $strcategories", $strcourses, $navigation, '', '', true, update_categories_button());
  62              print_heading($strcategories);
  63              echo skip_main_destination();
  64              print_box_start('categorybox');
  65              print_whole_category_list();
  66              print_box_end();
  67              print_course_search();
  68          } else {
  69              $strfulllistofcourses = get_string('fulllistofcourses');
  70              print_header("$site->shortname: $strfulllistofcourses", $strfulllistofcourses,
  71                      build_navigation(array(array('name'=>$strfulllistofcourses, 'link'=>'','type'=>'misc'))),
  72                           '', '', true, update_categories_button());
  73              echo skip_main_destination();
  74              print_box_start('courseboxes');
  75              print_courses(0);
  76              print_box_end();
  77          }
  78  
  79          /// I am not sure this context in the next has_capability call is correct.
  80          if (isloggedin() and !isguest() and !has_capability('moodle/course:create', $sysctx) and $CFG->enablecourserequests) {  // Print link to request a new course
  81              print_single_button('request.php', NULL, get_string('courserequest'), 'get');
  82          }
  83          if (has_capability('moodle/course:create', $sysctx)) {       // Print link to create a new course
  84          /// Get the 1st available category
  85              $options = array('category' => get_field('course_categories', 'id', 'parent', '0'));
  86              print_single_button('edit.php', $options, get_string('addnewcourse'), 'get');
  87          }
  88          if (has_capability('moodle/site:approvecourse', $sysctx)  and !empty($CFG->enablecourserequests)) {
  89              print_single_button('pending.php',NULL, get_string('coursespending'),'get');
  90          }
  91          print_footer();
  92          exit;
  93      }
  94  
  95  /// From now on is all the admin/course creator functions
  96  
  97  /// Delete a category if necessary
  98  
  99      if (!empty($delete) and confirm_sesskey()) {
 100          require_once ('delete_category_form.php');
 101  
 102          if (!$deletecat = get_record('course_categories', 'id', $delete)) {
 103              error('Incorrect category id', 'index.php');
 104          }
 105  
 106          $heading = get_string('deletecategory', '', format_string($deletecat->name));
 107  
 108          $context = get_context_instance(CONTEXT_COURSECAT, $delete);
 109          require_capability('moodle/category:delete', $context);
 110  
 111          $mform = new delete_category_form(null, $deletecat);
 112          $mform->set_data(array('delete'=>$delete));
 113  
 114          if ($mform->is_cancelled()) {
 115              redirect('index.php');
 116  
 117          } else if (!$data= $mform->get_data(false)) {
 118              require_once($CFG->libdir . '/questionlib.php');
 119              print_category_edit_header();
 120              print_heading($heading);
 121              print_box(get_string('deletecategorycheck2'), 'generalbox boxwidthnormal boxaligncenter');
 122              if (question_context_has_any_questions($context)) {
 123                  print_box(get_string('deletecoursecategorywithquestions', 'question'), 
 124                          'generalbox boxwidthnormal boxaligncenter');
 125              }
 126              $mform->display();
 127              print_footer();
 128              exit();
 129          }
 130  
 131          print_category_edit_header();
 132          print_heading($heading);
 133  
 134          if ($data->fulldelete) {
 135              category_delete_full($deletecat, true);
 136          } else {
 137              category_delete_move($deletecat, $data->newparent, true);
 138          }
 139  
 140          print_continue('index.php');
 141  
 142          print_footer();
 143          die;
 144      }
 145  
 146  /// Print headings
 147      print_category_edit_header();
 148      print_heading($strcategories);
 149  
 150  
 151  /// Create a default category if necessary
 152      if (!$categories = get_categories()) {    /// No category yet!
 153          // Try and make one
 154          unset($tempcat);
 155          $tempcat->name = get_string('miscellaneous');
 156          if (!$tempcat->id = insert_record('course_categories', $tempcat)) {
 157              error('Serious error: Could not create a default category!');
 158          }
 159          $tempcat->context = get_context_instance(CONTEXT_COURSECAT, $tempcat->id);
 160          mark_context_dirty('/'.SYSCONTEXTID);
 161      }
 162  
 163  
 164  /// Move a category to a new parent if required
 165  
 166      if (!empty($move) and ($moveto>=0) and confirm_sesskey()) {
 167          if ($tempcat = get_record('course_categories', 'id', $move)) {
 168              if ($tempcat->parent != $moveto) {
 169                  $newp = get_record('course_categories', 'id', $moveto);
 170                  if (! move_category($tempcat, $newp)) {
 171                      notify('Could not update that category!');
 172                  }
 173              }
 174          }
 175      }
 176  
 177  
 178  /// Hide or show a category
 179      if ((!empty($hide) or !empty($show)) and confirm_sesskey()) {
 180          if (!empty($hide)) {
 181              $tempcat = get_record('course_categories', 'id', $hide);
 182              $visible = 0;
 183          } else {
 184              $tempcat = get_record('course_categories', 'id', $show);
 185              $visible = 1;
 186          }
 187          if ($tempcat) {
 188              if (! set_field('course_categories', 'visible', $visible, 'id', $tempcat->id)) {
 189                  notify('Could not update that category!');
 190              }
 191              if (! set_field('course', 'visible', $visible, 'category', $tempcat->id)) {
 192                  notify('Could not hide/show any courses in this category !');
 193              }
 194          }
 195      }
 196  
 197  
 198  /// Move a category up or down
 199  
 200      if ((!empty($moveup) or !empty($movedown)) and confirm_sesskey()) {
 201  
 202          $swapcategory = NULL;
 203          $movecategory = NULL;
 204  
 205          if (!empty($moveup)) {
 206              if ($movecategory = get_record('course_categories', 'id', $moveup)) {
 207                  $categories = get_categories($movecategory->parent);
 208  
 209                  foreach ($categories as $category) {
 210                      if ($category->id == $movecategory->id) {
 211                          break;
 212                      }
 213                      $swapcategory = $category;
 214                  }
 215                  unset($category);
 216              }
 217          }
 218          if (!empty($movedown)) {
 219              if ($movecategory = get_record('course_categories', 'id', $movedown)) {
 220                  $categories = get_categories($movecategory->parent);
 221  
 222                  $choosenext = false;
 223                  foreach ($categories as $category) {
 224                      if ($choosenext) {
 225                          $swapcategory = $category;
 226                          break;
 227                      }
 228                      if ($category->id == $movecategory->id) {
 229                          $choosenext = true;
 230                      }
 231                  }
 232                  unset($category);
 233              }
 234          }
 235          if ($swapcategory and $movecategory) {        // Renumber everything for robustness
 236              $count=0;
 237              foreach ($categories as $category) {
 238                  $count++;
 239                  if ($category->id == $swapcategory->id) {
 240                      $category = $movecategory;
 241                  } else if ($category->id == $movecategory->id) {
 242                      $category = $swapcategory;
 243                  }
 244                  if (! set_field('course_categories', 'sortorder', $count, 'id', $category->id)) {
 245                      notify('Could not update that category!');
 246                  }
 247              }
 248              unset($category);
 249          }
 250      }
 251  
 252  /// Find any orphan courses that don't yet have a valid category and set to default
 253      fix_coursecategory_orphans();
 254  
 255  /// Should be a no-op 99% of the cases
 256      fix_course_sortorder();
 257  
 258  /// Print out the categories with all the knobs
 259  
 260      $strcategories = get_string('categories');
 261      $strcourses = get_string('courses');
 262      $strmovecategoryto = get_string('movecategoryto');
 263      $stredit = get_string('edit');
 264  
 265      $displaylist = array();
 266      $parentlist = array();
 267  
 268      $displaylist[0] = get_string('top');
 269      make_categories_list($displaylist, $parentlist, '');
 270  
 271      echo '<table class="generalbox editcourse boxaligncenter"><tr class="header">';
 272      echo '<th class="header" scope="col">'.$strcategories.'</th>';
 273      echo '<th class="header" scope="col">'.$strcourses.'</th>';
 274      echo '<th class="header" scope="col">'.$stredit.'</th>';
 275      echo '<th class="header" scope="col">'.$strmovecategoryto.'</th>';
 276      echo '</tr>';
 277  
 278      print_category_edit(NULL, $displaylist, $parentlist);
 279  
 280      echo '</table>';
 281  
 282      echo '<div class="buttons">';
 283  
 284      if (!empty($category->id)) {
 285          // Print link to create a new course in current category
 286          if (has_capability('moodle/course:create', $context)) {
 287              $options = array();
 288              $options['category'] = $category->id;
 289              print_single_button('edit.php', $options, get_string('addnewcourse'), 'get');
 290          }
 291      }else{
 292          if (has_capability('moodle/course:create', $sysctx)) {
 293              // print create course link to first category
 294              $options = array();
 295              $options = array('category' => get_field('course_categories', 'id', 'parent', '0'));
 296              print_single_button('edit.php', $options, get_string('addnewcourse'), 'get');
 297          }
 298      }
 299  
 300      // Print button for creating new categories
 301      if (has_capability('moodle/category:create', $context)) {
 302          unset($options);
 303          if (!empty($category->id)) {
 304              $options['id'] = $category->id;
 305          } else {
 306              $options['id'] = 0;
 307          }
 308          $options['categoryadd'] = 1;
 309          print_single_button('editcategory.php', $options, get_string('addnewcategory'), 'get');
 310      }
 311  
 312      if (has_capability('moodle/site:approvecourse', $sysctx)  and !empty($CFG->enablecourserequests)) {
 313          print_single_button('pending.php',NULL, get_string('coursespending'), 'get');
 314      }
 315      // admin page does not allow custom buttons in the navigation bar
 316      echo '<div class="singlebutton">';
 317      echo update_categories_button();
 318      echo '</div></div>';
 319  
 320      print_footer();
 321  
 322  function print_category_edit($category, $displaylist, $parentslist, $depth=-1, $up=false, $down=false) {
 323  /// Recursive function to print all the categories ready for editing
 324  
 325      global $CFG, $USER;
 326  
 327      static $str = '';
 328  
 329      if (empty($str)) {
 330          $str->edit     = get_string('edit');
 331          $str->delete   = get_string('delete');
 332          $str->moveup   = get_string('moveup');
 333          $str->movedown = get_string('movedown');
 334          $str->edit     = get_string('editthiscategory');
 335          $str->hide     = get_string('hide');
 336          $str->show     = get_string('show');
 337      }
 338  
 339      if ($category) {
 340  
 341          if (!isset($category->context)) {
 342              $category->context = get_context_instance(CONTEXT_COURSECAT, $category->id);
 343          }
 344  
 345          echo '<tr><td align="left" class="name">';
 346          for ($i=0; $i<$depth;$i++) {
 347              echo '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;';
 348          }
 349          $linkcss = $category->visible ? '' : ' class="dimmed" ';
 350          echo '<a '.$linkcss.' title="'.$str->edit.'" '.
 351               ' href="category.php?id='.$category->id.'&amp;categoryedit=on&amp;sesskey='.sesskey().'">'.
 352               format_string($category->name).'</a>';
 353          echo '</td>';
 354  
 355          echo '<td class="count">'.$category->coursecount.'</td>';
 356  
 357          echo '<td class="icons">';    /// Print little icons
 358  
 359          if (has_capability('moodle/category:update', $category->context)) {
 360              echo '<a title="'.$str->edit.'" href="editcategory.php?id='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
 361                   ' src="'.$CFG->pixpath.'/t/edit.gif" class="iconsmall" alt="'.$str->edit.'" /></a> ';
 362          }
 363  
 364          if (has_capability('moodle/category:delete', $category->context)) {
 365              echo '<a title="'.$str->delete.'" href="index.php?delete='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
 366                   ' src="'.$CFG->pixpath.'/t/delete.gif" class="iconsmall" alt="'.$str->delete.'" /></a> ';
 367          }
 368  
 369          if (has_capability('moodle/category:visibility', $category->context)) {
 370              if (!empty($category->visible)) {
 371                  echo '<a title="'.$str->hide.'" href="index.php?hide='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
 372                       ' src="'.$CFG->pixpath.'/t/hide.gif" class="iconsmall" alt="'.$str->hide.'" /></a> ';
 373              } else {
 374                  echo '<a title="'.$str->show.'" href="index.php?show='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
 375                       ' src="'.$CFG->pixpath.'/t/show.gif" class="iconsmall" alt="'.$str->show.'" /></a> ';
 376              }
 377          }
 378  
 379          if ($up) {
 380              echo '<a title="'.$str->moveup.'" href="index.php?moveup='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
 381                   ' src="'.$CFG->pixpath.'/t/up.gif" class="iconsmall" alt="'.$str->moveup.'" /></a> ';
 382          }
 383          if ($down) {
 384              echo '<a title="'.$str->movedown.'" href="index.php?movedown='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
 385                   ' src="'.$CFG->pixpath.'/t/down.gif" class="iconsmall" alt="'.$str->movedown.'" /></a> ';
 386          }
 387          echo '</td>';
 388  
 389          echo '<td align="left">';
 390          $tempdisplaylist = $displaylist;
 391          unset($tempdisplaylist[$category->id]);
 392          foreach ($parentslist as $key => $parents) {
 393              if (in_array($category->id, $parents)) {
 394                  unset($tempdisplaylist[$key]);
 395              }
 396          }
 397          popup_form ("index.php?move=$category->id&amp;sesskey=$USER->sesskey&amp;moveto=", $tempdisplaylist, "moveform$category->id", $category->parent, '', '', '', false);
 398          echo '</td>';
 399          echo '</tr>';
 400      } else {
 401          $category->id = '0';
 402      }
 403  
 404      if ($categories = get_categories($category->id)) {   // Print all the children recursively
 405          $countcats = count($categories);
 406          $count = 0;
 407          $first = true;
 408          $last = false;
 409          foreach ($categories as $cat) {
 410              $count++;
 411              if ($count == $countcats) {
 412                  $last = true;
 413              }
 414              $up = $first ? false : true;
 415              $down = $last ? false : true;
 416              $first = false;
 417  
 418              print_category_edit($cat, $displaylist, $parentslist, $depth+1, $up, $down);
 419          }
 420      }
 421  }
 422  
 423  function print_category_edit_header() {
 424      global $CFG;
 425      global $SITE;
 426  
 427      if (has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM))) {
 428          require_once($CFG->libdir.'/adminlib.php');
 429          admin_externalpage_setup('coursemgmt');
 430          admin_externalpage_print_header();
 431      } else {
 432          print_header("$SITE->shortname:". get_string('categories'), get_string('courses'),
 433              build_navigation(array(array('name'=>get_string('categories'),'link'=>'','type'=>'misc'))), '', '', true, update_categories_button());
 434      }
 435  }
 436  ?>