code/nav.inc.php


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<?PHP
  require_once('code/links.inc.php');

  class Nav {
    var $entries = array();
    
    function Nav() {
      $res = $GLOBALS['db']->Execute('SELECT * FROM nav ORDER BY id');
      
      while(!$res->EOF) {
        $this->entries[$res->fields[0]] = new NavEntry($res->fields[1], $res->fields[2], $res->fields[3]);
          
        $res->MoveNext();
      }
      
      foreach($this->entries as $entry)
        if($entry->parent != 0) 
          $this->entries[$entry->parent]->Add($entry);
    }
    
    function ParseEntries() {
      $ret = '<ul>';
      
      foreach($this->entries as $entry)
        if($entry->parent == 0)
          $ret .= $entry->Parse();
      
      $ret .= '</ul>';
      
      return $ret;
    }
  }
  
  class NavEntry {
    var $parent, $text, $link;
    var $children = array();
    
    function NavEntry($parent, $text, $link) {
      $this->parent = $parent;
      $this->text = $text;
      $this->link = $link;
    }
    
    function Add($entry) {
      array_push($this->children, $entry);
    }
    
    function Parse() {
      $ccount = 0;
      $ret = '<li>';
      
      $a = $GLOBALS['links']->ParseNavLink($this->text, $this->link);
      
      $ret .= $a;
      
      if(count($this->children) > 0) {
        $ret .= '<ul>';
        
        foreach($this->children as $child) {
          $cret = $child->Parse();
          
          if($cret) {
            $ret .= $cret;
            
            $ccount++;
          }
        }
        
        $ret .= '</ul>';
      }
      
      if(!$ccount && $a == $this->text)
        return '';
      
      return $ret . '</li>';
    }
  }
  
  $GLOBALS['nav'] = new Nav;
?>