protected function _getMimeIcon( $mimetype )
	{
		$config = $this->_getContext()->getConfig();

		/** controller/extjs/media/default/mimeicon/directory
		 * Directory that contains the icons for the different mime types
		 *
		 * If no preview image can be generated from an uploaded file, an icon
		 * for its mime type is displayed instead. The directory for the mime
		 * icons is structured by the general mime type (e.g. "image") as
		 * sub-directory and the specific name of the mime type (e.g. "jpeg")
		 * as file name.
		 *
		 * The mime icon directory must be relative to the "basedir" configuration
		 * option. If
		 *
		 *  /var/www/test
		 *
		 * is the configured base directory and the upload directory should be
		 * located in
		 *
		 *  /var/www/test/media/mime
		 *
		 * then the configuration for the uploads directory must be
		 *
		 *  media/mime
		 *
		 * Avoid leading and trailing slashes for the upload directory string!
		 *
		 * @param string Path relative to the base directory
		 * @since 2014.03
		 * @category Developer
		 * @see controller/extjs/media/default/basedir
		 */
		if( ( $mimedir = $config->get( 'controller/extjs/media/default/mimeicon/directory', null ) ) === null )
		{
			$this->_getContext()->getLogger()->log( 'No directory for mime type images configured' );
			return '';
		}

		/** controller/extjs/media/default/mimeicon/extension
		 * File extension of the mime icon images
		 *
		 * If you would like to use different mime icons that are available in
		 * another file format, you have to change the file extension for the
		 * mime icons to the actual ones.
		 *
		 * Note: The configured file extension needs a leading dot!
		 *
		 * @param string File extension including a leading dot, e.g ".jpg"
		 * @since 2014.03
		 * @category Developer
		 */
		$ext = $config->get( 'controller/extjs/media/default/mimeicon/extension', '.png' );
		$abspath = $this->_getAbsoluteDirectory( $mimedir ) . DIRECTORY_SEPARATOR . $mimetype . $ext;
		$mimeicon = $mimedir . DIRECTORY_SEPARATOR . $mimetype . $ext;

		if( is_file( $abspath ) === false ) {
			$mimeicon = $mimedir . DIRECTORY_SEPARATOR . 'unknown' . $ext;
		}

		return $mimeicon;
	}