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   1  <?php  // $Id: block_admin_tree.php,v 1.28.2.9 2008/08/21 15:31:10 skodak Exp $
   2  
   3  class block_admin_tree extends block_base {
   4  
   5      var $currentdepth;
   6      var $divcounter;
   7      var $tempcontent;
   8      var $pathtosection;
   9      var $expandjavascript;
  10      var $destination;
  11  
  12      function init() {
  13          global $PAGE;
  14          $this->title = get_string('administrationsite');
  15          $this->version = 2007101509;
  16          $this->currentdepth = 0;
  17          $this->divcounter = 1;
  18          $this->tempcontent = '';
  19          $this->section = (isset($PAGE->section) ? $PAGE->section : '');
  20          $this->pathtosection = array();
  21          $this->expandjavascript = '';
  22      }
  23  
  24      function applicable_formats() {
  25          if (has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM))) {
  26              return array('site' => true, 'admin' => true, 'my' => true);
  27          } else {
  28              return array('site' => true, 'admin' => true);
  29          }
  30      }
  31  
  32      function preferred_width() {
  33          return 210;
  34      }
  35  
  36      function open_folder($visiblename) {
  37          global $CFG;
  38          $strfolderopened = s(get_string('folderopened'));
  39  
  40          $this->tempcontent .= '<div class="depth'.$this->currentdepth.'"><a href="#" onclick="menu_toggle(\''.$this->divcounter.'\');return false">';
  41          $this->tempcontent .= '<span id="vh_div'.$this->divcounter.'indicator"><img src="'.$CFG->pixpath.'/i/open.gif" alt="'.$strfolderopened.'" /></span> ';
  42          $this->tempcontent .= $visiblename.'</a></div><div id="vh_div'.$this->divcounter.'">'."\n";
  43          $this->currentdepth++;
  44          $this->divcounter++;
  45      }
  46  
  47      function close_folder() {
  48          $this->currentdepth--;
  49          $this->tempcontent .= "</div>\n";
  50      }
  51  
  52      function create_item($visiblename,$link,$icon,$class) {
  53          global $CFG;
  54          $this->tempcontent .= '<div class="depth'.$this->currentdepth.'"><a class="'.$class.'" href="'.$link.'"><img src="'.$icon.'" alt="" />'.
  55                                 $visiblename.'</a></div>'."\n";
  56      }
  57  
  58      function build_tree (&$content) {
  59          global $CFG;
  60          if (is_a($content, 'admin_settingpage')) {
  61              // show hidden pages in tree if hidden page active
  62              if ($content->check_access() and (($content->name == $this->section) or !$content->is_hidden())) {
  63                  $class = ($content->name == $this->section) ? 'link current' : 'link';
  64                  if ($content->is_hidden()) {
  65                      $class .= ' hidden';
  66                  }
  67                  $this->create_item($content->visiblename, $CFG->wwwroot.'/'.$CFG->admin.'/settings.php?section='.$content->name,$CFG->pixpath.'/i/item.gif', $class);
  68              }
  69          } else if (is_a($content, 'admin_externalpage')) {
  70              // show hidden pages in tree if hidden page active
  71              if ($content->check_access() and (($content->name == $this->section) or !$content->is_hidden())) {
  72                  $class = ($content->name == $this->section) ? 'link current' : 'link';
  73                  if ($content->name === 'adminnotifications') {
  74                      if (admin_critical_warnings_present()) {
  75                          $class .= ' criticalnotification';
  76                      }
  77                  } 
  78                  if ($content->is_hidden()) {
  79                      $class .= ' hidden';
  80                  }
  81                  $this->create_item($content->visiblename, $content->url, $CFG->pixpath.'/i/item.gif', $class);
  82              }
  83          } else if (is_a($content, 'admin_category')) {
  84              if ($content->check_access() and !$content->is_hidden()) {
  85  
  86                  // check if the category we're currently printing is a parent category for the current page; if it is, we
  87                  // make a note (in the javascript) that it has to be expanded after the page has loaded
  88                  if ($this->section != '' and $this->pathtosection[count($this->pathtosection) - 1] == $content->name) {
  89                      $this->expandjavascript .= 'expand('.$this->divcounter.');'."\n";
  90                      array_pop($this->pathtosection);
  91                  }
  92  
  93                  $this->open_folder($content->visiblename);
  94  
  95                  $entries = array_keys($content->children);
  96  
  97                  foreach ($entries as $entry) {
  98                      $this->build_tree($content->children[$entry]);
  99                  }
 100  
 101                  $this->close_folder();
 102              }
 103          }
 104      }
 105  
 106      function get_content() {
 107  
 108          global $CFG;
 109  
 110          if ($this->content !== NULL) {
 111              return $this->content;
 112          }
 113  
 114          if (isguestuser() or !isloggedin()) {
 115              // these users can not change any settings
 116              $this->content = '';
 117              return '';
 118          }
 119  
 120          require_once($CFG->libdir.'/adminlib.php');
 121          $adminroot =& admin_get_root(false, false); // settings not required - only pages
 122  
 123          if ($current = $adminroot->locate($this->section, true)) {
 124              $this->pathtosection = $current->path;
 125              array_pop($this->pathtosection);
 126          }
 127  
 128          // we need to do this instead of $this->build_tree($adminroot) because the top-level folder
 129          // is redundant (and ideally ignored). (the top-level folder is "administration".)
 130  
 131          $entries = array_keys($adminroot->children);
 132  
 133          asort($entries);
 134  
 135          foreach ($entries as $entry) {
 136              $this->build_tree($adminroot->children[$entry]);
 137          }
 138  
 139          if ($this->tempcontent !== '') {
 140              $closedimg = '<img src="'.$CFG->pixpath.'/i/closed.gif" alt="'.s(get_string('folderclosed')).'" />';
 141              $openedimg = '<img src="'.$CFG->pixpath.'/i/open.gif" alt="'.s(get_string('folderopened')).'" />';
 142  
 143              $this->content = new object();
 144              $this->content->text  = '
 145  <script type="text/javascript">
 146  //<![CDATA[
 147  var vh_numdivs = '.($this->divcounter - 1).';
 148  var parkplatz  = new Array();
 149  for (var i=1; i<=vh_numdivs; i++) {
 150      parkplatz[i] = null;
 151  }
 152  
 153  function menu_toggle(i) {
 154      i = parseInt(i);
 155      if (parkplatz[i] === null) {
 156          collapse(i);
 157      } else {
 158          expand(i);
 159      }
 160  }
 161  
 162  function collapse(i) {
 163      if (parkplatz[i] !== null) {
 164          return;
 165      }
 166      var obj = document.getElementById("vh_div"+String(i));
 167      if (obj === null) {
 168          return;
 169      }
 170      var nothing = document.createElement("span");
 171      nothing.setAttribute("id", "vh_div"+String(i));
 172      parkplatz[i] = obj;
 173      obj.parentNode.replaceChild(nothing, obj);
 174      var icon = document.getElementById("vh_div"+String(i)+"indicator");
 175      icon.innerHTML = "'.addslashes_js($closedimg).'";
 176  }
 177  
 178  function expand(i) {
 179      if (parkplatz[i] === null) {
 180          return;
 181      }
 182      var nothing = document.getElementById("vh_div"+String(i));
 183      var obj = parkplatz[i];
 184      parkplatz[i] = null;
 185      nothing.parentNode.replaceChild(obj, nothing);
 186      var icon = document.getElementById("vh_div"+String(i)+"indicator");
 187      icon.innerHTML = "'.addslashes_js($openedimg).'";
 188  }
 189  
 190  function expandall() {
 191      for (i=1; i<=vh_numdivs; i++) {
 192          expand(i);
 193      }
 194  }
 195  
 196  function collapseall() {
 197      for (var i=vh_numdivs; i>0; i--) {
 198          collapse(i);
 199      }
 200  }
 201  
 202  //]]>
 203  </script>
 204  <div class="admintree">
 205  
 206  '.$this->tempcontent.'
 207  
 208  </div>
 209  <script type="text/javascript">
 210  //<![CDATA[
 211  collapseall();
 212  '.$this->expandjavascript.';
 213  //]]>
 214  </script>';
 215  
 216              // only do search if you have moodle/site:config
 217              if (has_capability('moodle/site:config',get_context_instance(CONTEXT_SYSTEM)) ) {
 218                  $this->content->footer = '<div class="adminsearchform">'.
 219                                       '<form action="'.$CFG->wwwroot.'/'.$CFG->admin.'/search.php" method="get"><div>'.
 220                                       '<label for="query" class="accesshide">'.get_string('searchinsettings', 'admin').'</label>'.
 221                                       '<input type="text" name="query" id="query" size="8" value="'.s($adminroot->search).'" />'.
 222                                       '<input type="submit" value="'.get_string('search').'" /></div>'.
 223                                       '</form></div>';
 224              } else {
 225                  $this->content->footer = '';
 226              }
 227          } else {
 228              $this->content = new object();
 229              $this->content->text = '';
 230          }
 231  
 232          return $this->content;
 233  
 234      }
 235  }
 236  
 237  ?>