<?php

/**
 * Dokument-Objekt.<br>
 * Diese Objekt verkörpert das Root-Objekt in einem DOM-Baum.<br>
 * <br>
 * Dieses Objekt kann Text parsen und seine Unterobjekte selbst erzeugen.<br>
 * 
 * @author Jan Dankert, $Author$
 * @version $Revision$
 * @package openrat.text
 */
class TextRenderer
{
	var $linkedObjectIds = array();
	
	/**
	 * Fußnoten.
	 *
	 * @var Array
	 */
	var $footnotes       = array();

	
	/**
	 * Rendert ein Dokument-Element.
	 *
	 * @param Object $child Element
	 * @return String
	 */
	function renderElement( $child )
	{
		global $conf;
		
				$className = strtolower(get_class($child));
				$val = '';

				$length = @$conf['editor']['text']['linelength'];
				if	( intval($length) == 0 )
					$length = 70;

				switch( $className )
				{
					case 'footnoteelement':
						
						$nr = 1;
						foreach( $this->footnotes as $fn )
							if ( strtolower(get_class($fn))=='linebreakelement')
								$nr++;
								
						$val = $nr;
						if	( @$conf['editor']['footnote']['bracket'])
							$val = '('.$nr.')';

						if	( $nr == 1 )
						{
							$this->footnotes[] = new RawElement("\n\n---\n");
						}
						$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 'headlineelement':
						$val = "\n".wordwrap($child->text,$length);
						$val .= str_repeat('-',min($length,strlen($val)));
						break;

					case 'paragraphelement':
						$val = "\n\n";
						break;

					case 'strongelement':
						
						foreach( $child->children as $c )
							$val .= $this->renderElement($c);
						$val = strtoupper($val);

						$child->children = array();

						break;
						
					case 'textelement':
						$length = @$conf['editor']['text']['linelength'];
						if	( intval($length) == 0 )
							$length = 70;
						$val .= wordwrap($child->text,$length);
						break;

					case 'linebreakelement':
						$val .= "\n";
						break;
					default:
				}
				
				foreach( $child->children as $c )
				{
					$val .= $this->renderElement( $c );
				}

				return $val;
			
//				die( 'unknown document type: '.$this->type );
		
	}


	
	/**
	 * Rendering des Dokumentes.<br>
	 *
	 * @return String
	 */
	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;
	}
}

?>