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   1  <?php // $Id: pagelib.php,v 1.5.2.4 2008/01/18 14:37:29 nicolasconnault Exp $
   2  /**
   3   * Page class for lesson
   4   *
   5   * @author Mark Nielsen
   6   * @version $Id: pagelib.php,v 1.5.2.4 2008/01/18 14:37:29 nicolasconnault Exp $
   7   * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
   8   * @package lesson
   9   **/
  10  
  11  require_once($CFG->libdir.'/pagelib.php');
  12  require_once($CFG->dirroot.'/course/lib.php'); // needed for some blocks
  13  
  14  /**
  15   * Define the page types
  16   *
  17   **/
  18  define('PAGE_LESSON_VIEW', 'mod-lesson-view');
  19  
  20  /**
  21   * Map the classes to the page types
  22   *
  23   **/
  24  page_map_class(PAGE_LESSON_VIEW, 'page_lesson');
  25  
  26  /**
  27   * Add the page types defined in this file
  28   *
  29   **/
  30  $DEFINEDPAGES = array(PAGE_LESSON_VIEW);
  31  
  32  /**
  33   * Class that models the behavior of a lesson
  34   *
  35   * @author Mark Nielsen (lesson extention only)
  36   * @package lesson
  37   **/
  38  class page_lesson extends page_generic_activity {
  39  
  40      /**
  41       * Module name
  42       *
  43       * @var string
  44       **/
  45      var $activityname = 'lesson';
  46      /**
  47       * Current lesson page ID
  48       *
  49       * @var string
  50       **/
  51      var $lessonpageid = NULL;
  52  
  53      /**
  54       * Print a standard lesson heading.
  55       *
  56       * This will also print up to three
  57       * buttons in the breadcrumb, lesson heading
  58       * lesson tabs, lesson notifications and perhaps
  59       * a popup with a media file.
  60       *
  61       * @return void
  62       **/
  63      function print_header($title = '', $morenavlinks = array()) {
  64          global $CFG;
  65  
  66          $this->init_full();
  67  
  68      /// Variable setup/check
  69          $context      = get_context_instance(CONTEXT_MODULE, $this->modulerecord->id);
  70          $activityname = format_string($this->activityrecord->name);
  71  
  72          if ($this->lessonpageid === NULL) {
  73              error('Programmer error: must set the lesson page ID');
  74          }
  75          if (empty($title)) {
  76              $title = "{$this->courserecord->shortname}: $activityname";
  77          }
  78          
  79      /// Build the buttons
  80          if (has_capability('mod/lesson:edit', $context)) {
  81              $buttons = '<span class="edit_buttons">'.update_module_button($this->modulerecord->id, $this->courserecord->id, get_string('modulename', 'lesson'));
  82  
  83              if (!empty($this->lessonpageid) and $this->lessonpageid != LESSON_EOL) {
  84                  $buttons .= '<form '.$CFG->frametarget.' method="get" action="'.$CFG->wwwroot.'/mod/lesson/lesson.php">'.
  85                              '<input type="hidden" name="id" value="'.$this->modulerecord->id.'" />'.
  86                              '<input type="hidden" name="action" value="editpage" />'.
  87                              '<input type="hidden" name="redirect" value="navigation" />'.
  88                              '<input type="hidden" name="pageid" value="'.$this->lessonpageid.'" />'.
  89                              '<input type="submit" value="'.get_string('editpagecontent', 'lesson').'" />'.
  90                              '</form>';
  91  
  92                  if (!empty($CFG->showblocksonmodpages) and $this->user_allowed_editing()) {
  93                      if ($this->user_is_editing()) {
  94                          $onoff = 'off';
  95                      } else {
  96                          $onoff = 'on';
  97                      }
  98                      $buttons .= '<form '.$CFG->frametarget.' method="get" action="'.$CFG->wwwroot.'/mod/lesson/view.php">'.
  99                                  '<input type="hidden" name="id" value="'.$this->modulerecord->id.'" />'.
 100                                  '<input type="hidden" name="pageid" value="'.$this->lessonpageid.'" />'.
 101                                  '<input type="hidden" name="edit" value="'.$onoff.'" />'.
 102                                  '<input type="submit" value="'.get_string("blocksedit$onoff").'" />
 103                                  </form>';
 104                  }
 105              }
 106              $buttons .= '</span>';
 107          } else {
 108              $buttons = '&nbsp;';
 109          }
 110  
 111      /// Build the meta
 112      /// Currently broken because the $meta is printed before the JavaScript is printed
 113          // if (!optional_param('pageid', 0, PARAM_INT) and !empty($this->activityrecord->mediafile)) {
 114          //     // open our pop-up
 115          //     $url = '/mod/lesson/mediafile.php?id='.$this->modulerecord->id;
 116          //     $name = 'lessonmediafile';
 117          //     $options = 'menubar=0,location=0,left=5,top=5,scrollbars,resizable,width='. $this->activityrecord->mediawidth .',height='. $this->activityrecord->mediaheight;
 118          //     $meta = "\n<script type=\"text/javascript\">";
 119          //     $meta .= "\n<!--\n";
 120          //     $meta .= "     openpopup('$url', '$name', '$options', 0);";
 121          //     $meta .= "\n// -->\n";
 122          //     $meta .= '</script>';
 123          // } else {
 124              $meta = '';
 125          // }
 126  
 127          $navigation = build_navigation($morenavlinks, $this->modulerecord);
 128          print_header($title, $this->courserecord->fullname, $navigation, '', $meta, true, $buttons, navmenu($this->courserecord, $this->modulerecord));
 129  
 130          if (has_capability('mod/lesson:manage', $context)) {
 131              print_heading_with_help($activityname, 'overview', 'lesson');
 132  
 133              // Rename our objects for the sake of the tab code
 134              list($cm, $course, $lesson, $currenttab) = array(&$this->modulerecord, &$this->courserecord, &$this->activityrecord, 'view');
 135              include($CFG->dirroot.'/mod/lesson/tabs.php');
 136          } else {
 137              print_heading($activityname);
 138          }
 139  
 140          lesson_print_messages();
 141      }
 142  
 143      function get_type() {
 144          return PAGE_LESSON_VIEW;
 145      }
 146  
 147      function blocks_get_positions() {
 148          return array(BLOCK_POS_LEFT, BLOCK_POS_RIGHT);
 149      }
 150  
 151      function blocks_default_position() {
 152          return BLOCK_POS_RIGHT;
 153      }
 154  
 155      function blocks_move_position(&$instance, $move) {
 156          if($instance->position == BLOCK_POS_LEFT && $move == BLOCK_MOVE_RIGHT) {
 157              return BLOCK_POS_RIGHT;
 158          } else if ($instance->position == BLOCK_POS_RIGHT && $move == BLOCK_MOVE_LEFT) {
 159              return BLOCK_POS_LEFT;
 160          }
 161          return $instance->position;
 162      }
 163  
 164      /**
 165       * Needed to add the ID of the current lesson page
 166       *
 167       * @return array
 168       **/
 169      function url_get_parameters() {
 170          $this->init_full();
 171          return array('id' => $this->modulerecord->id, 'pageid' => $this->lessonpageid);;
 172      }
 173  
 174      /**
 175       * Set the current lesson page ID
 176       *
 177       * @return void
 178       **/
 179      function set_lessonpageid($pageid) {
 180          $this->lessonpageid = $pageid;
 181      }
 182  }
 183  ?>