HtmlRenderer.class.php

gehe zur Dokumentation dieser Datei

<?php

class HtmlRenderer
{
     var $linkedObjectIds = array();
     var $encodeHtml = false;
          
     var $footnotes       = array();


     function renderElement( $child )
     {
          global $conf;
          
                    $attr = array();
                    $val  = '';
                    $praefix = '';
                    $suffix  = '';
                    $empty   = false;

                    if   ( count($child->children) > 0 )
                    {
                         $subChild1 = $child->children[0];
                         
                         if   ( !empty($subChild1->class) )
                              $attr['class'] = $subChild1->class;
                         
                         if   ( !empty($subChild1->style) )
                              $attr['style'] = $subChild1->style;
                         
                         if   ( !empty($subChild1->title) )
                              $attr['title'] = $subChild1->title;
                    }
                    
                    switch( strtolower(get_class($child)) )
                    {
                         case 'tableofcontentelement':
                              $tag = 'p';
                              foreach( $this->children as $h)
                              {
                                   if   ( strtolower(get_class($h))=='headlineelement' )
                                   {
                                        $child->children[] = new RawElement(str_repeat('&nbsp;&nbsp;',$h->level));
                                        $t = new TextElement( $h->getText() );
                                        $l = new LinkElement();
                                        $l->fragment=$h->getName();
                                        $l->children[] = $t;
                                        $child->children[] = $l;
                                        $child->children[] = new LineBreakElement();
                                   }
                              }
                              break;

                         case 'rawelement':
                              $tag = '';
                              $val = $child->src;
                              
                              break;

                         case 'textelement':
                              $tag = '';
//                            $tag = 'span';

                              $val = $child->text;
                              if   ( $this->encodeHtml )
                                   $val = Text::encodeHtml( $val );
                              $val = Text::replaceHtmlChars( $val );
                              break;

                         case 'footnoteelement':
                              $tag = 'a';
                              $attr['href'] = '#footnote';
                              
                              $title = '';
                              foreach( $child->children as $c )
                                   $title .= $this->renderElement($c);
                              $attr['title'] = strip_tags($title);
                               
                              $nr = 1;
                              foreach( $this->footnotes as $fn )
                                   if ( strtolower(get_class($fn))=='linebreakelement')
                                        $nr++;
                                        
                              $val = $nr;
                              if   ( @$conf['editor']['footnote']['bracket'])
                                   $val = '('.$nr.')';
                              if   ( @$conf['editor']['footnote']['sup'])
                                   $val = '<sup><small>'.$nr.'</small></sup>';
                                        

                              if   ( $nr == 1 )
                              {
                                   $this->footnotes[] = new RawElement('&mdash;');
                                   $le = new LinkElement();
                                   $le->name = "footnote";
                                   $this->footnotes[] = $le;
                                   $this->footnotes[] = new RawElement('&mdash;');
                              }
                              $this->footnotes[] = new LineBreakElement();
                              $this->footnotes[] = new RawElement($val);
                              $this->footnotes[] = new RawElement(' ');
                              foreach( $child->children as $c )
                                   $this->footnotes[] = $c;
                              
                              $child->children = array();

                              break;

                         case 'codeelement':
                              
                              if   ( empty($child->language) )
                                   // Wenn keine Sprache verf�gbar, dann ein einfaches PRE-Element erzeugen.
                                   $tag = 'pre';
                              else
                              {
                                   // Wenn Sprache verf�gbar, dann den GESHI-Parser bem�hen.
                                   $tag    = '';
                                   $source = '';
                                   foreach( $child->children as $c )
                                        if   ( strtolower(get_class($c)) == 'textelement')
                                             $source .= $c->text."\n";
                                   $child->children = array();
                                   require_once('./geshi/geshi.php');
                                   $geshi = new Geshi($source,$child->language);
                                   $val = $geshi->parse_code(); 
                              }
                              break;

                         case 'quoteelement':
                              $tag = 'blockquote';
                              break;


                         case 'paragraphelement':
                              $tag = 'p';
                              break;

                         case 'speechelement':
                              if   ( isset($conf['editor']['html']['tag_speech']) )
                                   $tag = $conf['editor']['html']['tag_speech'];
                              else
                                   $tag = 'cite';
                              
                              // Danke an: http://www.apostroph.de/tueddelchen.php
                              //TODO: Abh�ngigkeit von Spracheinstellung implementieren.
                              $language = 'de';
                              switch( $language )
                              {
                                   case 'de': // deutsche Notation
                                        $praefix = '&bdquo;';
                                        $suffix  = '&ldquo;';
                                        break;
                                   case 'fr':
                                        $praefix = '&laquo;';
                                        $suffix  = '&raquo;';
                                        break;
                                   default: // englische Notation
                                        $praefix = '&ldquo;';
                                        $suffix  = '&rdquo;';
                              }
                              
                              if   ( $conf['editor']['html']['override_speech'] )
                              {
                                   $praefix = $conf['editor']['html']['override_speech_open' ];
                                   $suffix  = $conf['editor']['html']['override_speech_close'];
                              }
                              break;

                         case 'linebreakelement':
                              $tag   = 'br';
                              $empty = true;
                              break;

                         case 'linkelement':
                              $tag = 'a';
                              if   ( !empty($child->name) )
                                   $attr['name'] = $child->name;
                              else
                                   $attr['href'] = htmlspecialchars($child->getUrl());

                              if   ( Object::available( $child->objectId ) )
                              {
                                   $file = new File( $child->objectId );
                                   $file->load();
                                   $attr['title'] = $file->description;
                                   unset( $file );
                              }
                              break;

                         case 'imageelement':
                              $empty       = true;
                              $attr['alt'] = '';
                              
                              if   ( ! Object::available( $child->objectId ) )
                              {
                                   $tag = '';
                              }
                              elseif    ( empty($attr['title']) )
                              {
                                   $tag = 'img';
                                   $attr['src']    = $child->getUrl();
                                   $attr['border'] = '0';
                                   
                                   // Breite/H�he des Bildes bestimmen.
                                   $image = new File( $child->objectId );
                                   
                                   $image->load();
                                   $attr['alt'   ]    = $image->name;
                                   $attr['title' ]    = $image->description;
                                   
                                   $image->getImageSize();
                                   $attr['width' ]    = $image->width;
                                   $attr['height']    = $image->height;
                                   unset($image);
                              }
                              else
                              {
                                   $tag = 'dl';
                                   
                                   if   ( empty($attr['class']) )
                                        $attr['class'] = "image";
                                        
                                   $child->children = array();
                                   $dt = new DefinitionListItemElement();
                                   $dt->children[] = new TextElement('(image)');
                                   $dt->children[] = $child;
                                   $child->children[] = $dt;

                                   $dd = new DefinitionListEntryElement();
                                   $dd->children[] = new TextElement('(image)');
                                   $dd->children[] = new TextElement($attr['title']);
                                   $child->children[] = $dd;
                              }
                              break;

                         case 'strongelement':
                              if   ( isset($conf['editor']['html']['tag_strong']) )
                                   $tag = $conf['editor']['html']['tag_strong'];
                              else
                                   $tag = 'strong';
                              break;

                         case 'emphaticelement':
                              if   ( isset($conf['editor']['html']['tag_emphatic']) )
                                   $tag = $conf['editor']['html']['tag_emphatic'];
                              else
                                   $tag = 'em';
                              break;

                         case 'insertedelement':
                              $tag = 'ins';
                              break;

                         case 'removedelement':
                              $tag = 'del';
                              break;

                         case 'headlineelement':
                              $tag = 'h'.$child->level;
                              
                              $l = new LinkElement();
                              $l->name = $child->getName();
                              $child->children[] = $l;
                              
                              break;

                         case 'tableelement':
                              $tag = 'table';
                              break;

                         case 'tablelineelement':
                              $tag = 'tr';
                              break;

                         case 'definitionlistelement':
                              $items = $child->children;
                              $newChildren = array();
                              foreach( $items as $item )
                              {
                                   $def = new DefinitionItemElement();
                                   $def->key = $item->key;
                                   $item->key = ''; 
                                   $newChildren[] = $def;
                                   $newChildren[] = $item;
                              }
//                            Html::debug($newChildren,'Children-neu');
                              $child->children = $newChildren;
                              $tag = 'dl';
                              break;

                         case 'definitionitemelement':
                              if   ( !empty($child->key) )
                              {
                                   $tag = 'dt';
                                   $val = $child->key;
                              }
                              else
                              {
                                   $tag = 'dd';
                              }
                              break;

                         case 'tablecellelement':
                              if   ( $child->isHeading )
                                   $tag = 'th'; else $tag = 'td';
                                   
                              if   ( $child->rowSpan > 1 )
                                   $attr['rowspan'] = $child->rowSpan;
                              if   ( $child->colSpan > 1 )
                                   $attr['colspan'] = $child->colSpan;
                              break;

                         case 'listelement':
                              $tag = 'ul';
                              break;
                              
                         case 'teletypeelement':
                              if   ( isset($conf['editor']['html']['tag_teletype']) )
                                   $tag = $conf['editor']['html']['tag_teletype'];
                              else
                                   $tag = 'code';
                              break;
                              
                         case 'numberedlistelement':
                              $tag = 'ol';
                              break;
                              
                         case 'listentryelement':
                              $tag = 'li';
                              break;

                         default:
                              
                              $tag = 'unknown-element';
                              $attr['class'] = strtolower(get_class($child));
                              break;
                    }                   

                    $val .= $praefix;
                    foreach( $child->children as $c )
                    {
                         $val .= $this->renderElement( $c );
                    }

                    $val .= $suffix;
//                  echo "text:$val";
                    return $this->renderHtmlElement($tag,$val,$empty,$attr);
          
     }



     function renderHtmlElement( $tag,$value,$empty,$attr=array() )
     {
          global $conf;
          if   ( $tag == '' )
               return $value;
               
          $val = '<'.$tag;
          foreach( $attr as $attrName=>$attrInhalt )
          {
               $val .= ' '.$attrName.'="'.$attrInhalt.'"';
          }
          
          if   ( $value == '' && $empty )
          {
               // Inhalt ist leer, also Kurzform verwenden.
               // Die Kurzform ist abh�ngig vom Rendermode.
               // SGML=<tag>
               // XML=<tag />
               if   ( $conf['editor']['html']['rendermode'] == 'xml' )
               {
                    $val .= ' />';
                    return $val;
               }
               else 
               {
                    $val .= '>';
                    return $val;
               }    
          }
          
          $val .= '>'.$value.'</'.$tag.'>';
          return $val;
     }

     
     
     function render()
     {
          $this->renderedText = '';
          $this->footnotes    = array();
          
          foreach( $this->children as $child )
               $this->renderedText .= $this->renderElement( $child );

          foreach( $this->footnotes as $child )
               $this->renderedText .= $this->renderElement( $child );
               
          return $this->renderedText;
     }
}

?>