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   1  <?php // $Id: pagelib.php,v 1.23.2.2 2008/05/02 04:07:28 dongsheng Exp $
   2  
   3  require_once($CFG->libdir.'/pagelib.php');
   4  
   5  define('PAGE_ADMIN', 'admin');
   6  
   7  // Bounds for block widths
   8  // more flexible for theme designers taken from theme config.php
   9  $lmin = (empty($THEME->block_l_min_width)) ? 0 :   $THEME->block_l_min_width;
  10  $lmax = (empty($THEME->block_l_max_width)) ? 210 : $THEME->block_l_max_width;
  11  $rmin = (empty($THEME->block_r_min_width)) ? 0 :   $THEME->block_r_min_width;
  12  $rmax = (empty($THEME->block_r_max_width)) ? 210 : $THEME->block_r_max_width;
  13  
  14  define('BLOCK_L_MIN_WIDTH', $lmin);
  15  define('BLOCK_L_MAX_WIDTH', $lmax);
  16  define('BLOCK_R_MIN_WIDTH', $rmin);
  17  define('BLOCK_R_MAX_WIDTH', $rmax);
  18  
  19  page_map_class(PAGE_ADMIN, 'page_admin');
  20  
  21  class page_admin extends page_base {
  22  
  23      var $section;
  24      var $visiblepathtosection;
  25  
  26      // hack alert!
  27      // this function works around the inability to store the section name
  28      // in default block, maybe we should "improve" the blocks a bit?
  29      function init_extra($section) {
  30          global $CFG;
  31  
  32          if($this->full_init_done) {
  33              return;
  34          }
  35  
  36          $adminroot =& admin_get_root(false, false); //settings not required - only pages
  37  
  38          // fetch the path parameter
  39          $this->section = $section;
  40          $current =& $adminroot->locate($section, true);
  41          $this->visiblepathtosection = array_reverse($current->visiblepath);
  42  
  43          // all done
  44          $this->full_init_done = true;
  45      }
  46  
  47      function blocks_get_default() {
  48          return 'admin_tree,admin_bookmarks';
  49      }
  50  
  51      // seems reasonable that the only people that can edit blocks on the admin pages
  52      // are the admins... but maybe we want a role for this?
  53      function user_allowed_editing() {
  54          return has_capability('moodle/site:manageblocks', get_context_instance(CONTEXT_SYSTEM));
  55      }
  56  
  57      // has to be fixed. i know there's a "proper" way to do this
  58      function user_is_editing() {
  59          global $USER;
  60          return $USER->adminediting;
  61      }
  62  
  63      function url_get_path() {
  64          global $CFG;
  65  
  66          $adminroot =& admin_get_root(false, false); //settings not required - only pages
  67  
  68          $root =& $adminroot->locate($this->section);
  69          if (is_a($root, 'admin_externalpage')) {
  70              return $root->url;
  71          } else {
  72              return ($CFG->wwwroot . '/' . $CFG->admin . '/settings.php');
  73          }
  74      }
  75  
  76      function url_get_parameters() {  // only handles parameters relevant to the admin pagetype
  77          return array('section' => (isset($this->section) ? $this->section : ''));
  78      }
  79  
  80      function blocks_get_positions() {
  81          return array(BLOCK_POS_LEFT, BLOCK_POS_RIGHT);
  82      }
  83  
  84      function blocks_default_position() {
  85          return BLOCK_POS_LEFT;
  86      }
  87  
  88      function blocks_move_position(&$instance, $move) {
  89          if($instance->position == BLOCK_POS_LEFT && $move == BLOCK_MOVE_RIGHT) {
  90              return BLOCK_POS_RIGHT;
  91          } else if ($instance->position == BLOCK_POS_RIGHT && $move == BLOCK_MOVE_LEFT) {
  92              return BLOCK_POS_LEFT;
  93          }
  94          return $instance->position;
  95      }
  96  
  97      // does anything need to be done here?
  98      function init_quick($data) {
  99          parent::init_quick($data);
 100      }
 101  
 102      function print_header($section = '', $focus='') {
 103          global $USER, $CFG, $SITE;
 104  
 105          $this->init_full($section); // we're trusting that init_full() has already been called by now; it should have.
 106                                      // if not, print_header() has to be called with a $section parameter
 107  
 108          // The search page currently doesn't handle block editing
 109          if ($this->section != 'search' and $this->user_allowed_editing()) {
 110              $buttons = '<div><form '.$CFG->frametarget.' method="get" action="' . $this->url_get_path() . '">'.
 111                  '<div><input type="hidden" name="adminedit" value="'.($this->user_is_editing()?'off':'on').'" />'.
 112                  '<input type="hidden" name="section" value="'.$this->section.'" />'.
 113                  '<input type="submit" value="'.get_string($this->user_is_editing()?'blockseditoff':'blocksediton').'" /></div></form></div>';
 114          } else {
 115              $buttons = '&nbsp;';
 116          }
 117  
 118          $navlinks = array();
 119          foreach ($this->visiblepathtosection as $element) {
 120              $navlinks[] = array('name' => $element, 'link' => null, 'type' => 'misc');
 121          }
 122          $navigation = build_navigation($navlinks);
 123  
 124          print_header("$SITE->shortname: " . implode(": ",$this->visiblepathtosection), $SITE->fullname, $navigation, $focus, '', true, $buttons, '');
 125      }
 126  
 127      function get_type() {
 128          return PAGE_ADMIN;
 129      }
 130  }
 131  
 132  ?>