blocks/admin_tree/block_admin_tree.php

   1 <?php  // $Id$
   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="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->is_hidden()) {
  74                     $class .= ' hidden';
  75                 }
  76                 $this->create_item($content->visiblename, $content->url, $CFG->pixpath.'/i/item.gif', $class);
  77             }
  78         } else if (is_a($content, 'admin_category')) {
  79             if ($content->check_access() and !$content->is_hidden()) {
  80
  81                 // check if the category we're currently printing is a parent category for the current page; if it is, we
  82                 // make a note (in the javascript) that it has to be expanded after the page has loaded
  83                 if ($this->section != '' and $this->pathtosection[count($this->pathtosection) - 1] == $content->name) {
  84                     $this->expandjavascript .= 'expand('.$this->divcounter.');'."\n";
  85                     array_pop($this->pathtosection);
  86                 }
  87
  88                 $this->open_folder($content->visiblename);
  89
  90                 $entries = array_keys($content->children);
  91
  92                 foreach ($entries as $entry) {
  93                     $this->build_tree($content->children[$entry]);
  94                 }
  95
  96                 $this->close_folder();
  97             }
  98         }
  99     }
 100
 101     function get_content() {
 102
 103         global $CFG;
 104
 105         if ($this->content !== NULL) {
 106             return $this->content;
 107         }
 108
 109         if (isguestuser() or !isloggedin()) {
 110             // these users can not change any settings
 111             $this->content = '';
 112             return '';
 113         }
 114
 115         require_once($CFG->libdir.'/adminlib.php');
 116         $adminroot =& admin_get_root(false, false); // settings not required - only pages
 117
 118         if ($current = $adminroot->locate($this->section, true)) {
 119             $this->pathtosection = $current->path;
 120             array_pop($this->pathtosection);
 121         }
 122
 123         // we need to do this instead of $this->build_tree($adminroot) because the top-level folder
 124         // is redundant (and ideally ignored). (the top-level folder is "administration".)
 125
 126         $entries = array_keys($adminroot->children);
 127
 128         asort($entries);
 129
 130         foreach ($entries as $entry) {
 131             $this->build_tree($adminroot->children[$entry]);
 132         }
 133
 134         if ($this->tempcontent !== '') {
 135             $closedimg = '<img src="'.$CFG->pixpath.'/i/closed.gif" alt="'.s(get_string('folderclosed')).'" />';
 136             $openedimg = '<img src="'.$CFG->pixpath.'/i/open.gif" alt="'.s(get_string('folderopened')).'" />';
 137
 138             $this->content = new object();
 139             $this->content->text  = '
 140 <script type="text/javascript">
 141 //<![CDATA[
 142 var vh_numdivs = '.($this->divcounter - 1).';
 143 var parkplatz  = new Array();
 144 for (var i=1; i<=vh_numdivs; i++) {
 145     parkplatz[i] = null;
 146 }
 147
 148 function toggle(i) {
 149     i = parseInt(i);
 150     if (parkplatz[i] === null) {
 151         collapse(i);
 152     } else {
 153         expand(i);
 154     }
 155 }
 156
 157 function collapse(i) {
 158     if (parkplatz[i] !== null) {
 159         return;
 160     }
 161     var obj = document.getElementById("vh_div"+String(i));
 162     if (obj === null) {
 163         return;
 164     }
 165     var nothing = document.createElement("span");
 166     nothing.setAttribute("id", "vh_div"+String(i));
 167     parkplatz[i] = obj;
 168     obj.parentNode.replaceChild(nothing, obj);
 169     var icon = document.getElementById("vh_div"+String(i)+"indicator");
 170     icon.innerHTML = "'.addslashes_js($closedimg).'";
 171 }
 172
 173 function expand(i) {
 174     if (parkplatz[i] === null) {
 175         return;
 176     }
 177     var nothing = document.getElementById("vh_div"+String(i));
 178     var obj = parkplatz[i];
 179     parkplatz[i] = null;
 180     nothing.parentNode.replaceChild(obj, nothing);
 181     var icon = document.getElementById("vh_div"+String(i)+"indicator");
 182     icon.innerHTML = "'.addslashes_js($openedimg).'";
 183 }
 184
 185 function expandall() {
 186     for (i=1; i<=vh_numdivs; i++) {
 187         expand(i);
 188     }
 189 }
 190
 191 function collapseall() {
 192     for (var i=vh_numdivs; i>0; i--) {
 193         collapse(i);
 194     }
 195 }
 196
 197 //]]>
 198 </script>
 199 <div class="admintree">
 200
 201 '.$this->tempcontent.'
 202
 203 </div>
 204 <script type="text/javascript">
 205 //<![CDATA[
 206 collapseall();
 207 '.$this->expandjavascript.';
 208 //]]>
 209 </script>';
 210
 211             $this->content->footer = '<div class="adminsearchform">'.
 212                                      '<form action="'.$CFG->wwwroot.'/'.$CFG->admin.'/search.php" method="get"><div>'.
 213                                      '<label for="query" class="accesshide">'.get_string('searchinsettings', 'admin').'</label>'.
 214                                      '<input type="text" name="query" id="query" size="8" value="'.s($adminroot->search).'" />'.
 215                                      '<input type="submit" value="'.get_string('search').'" /></div>'.
 216                                      '</form></div>';
 217         } else {
 218             $this->content = new object();
 219             $this->content->text = '';
 220         }
 221
 222         return $this->content;
 223
 224     }
 225 }
 226
 227 ?>