1: <?php
  2: /**
  3:  * The Horde_Mime_Viewer_Smil renders SMIL documents to very basic HTML.
  4:  *
  5:  * Copyright 2006-2012 Horde LLC (http://www.horde.org/)
  6:  *
  7:  * See the enclosed file COPYING for license information (LGPL). If you
  8:  * did not receive this file, see http://www.horde.org/licenses/lgpl21.
  9:  *
 10:  * @author   Jan Schneider <jan@horde.org>
 11:  * @category Horde
 12:  * @license  http://www.horde.org/licenses/lgpl21 LGPL 2.1
 13:  * @package  Mime_Viewer
 14:  */
 15: class Horde_Mime_Viewer_Smil extends Horde_Mime_Viewer_Base
 16: {
 17:     /**
 18:      * Handle for the XML parser object.
 19:      *
 20:      * @var resource
 21:      */
 22:     protected $_parser;
 23: 
 24:     /**
 25:      * String buffer to hold the generated content
 26:      *
 27:      * @var string
 28:      */
 29:     protected $_content;
 30: 
 31:     /**
 32:      * This driver's display capabilities.
 33:      *
 34:      * @var array
 35:      */
 36:     protected $_capability = array(
 37:         'full' => true,
 38:         'info' => false,
 39:         'inline' => true,
 40:         'raw' => false
 41:     );
 42: 
 43:     /**
 44:      * Return the full rendered version of the Horde_Mime_Part object.
 45:      *
 46:      * @return array  See parent::render().
 47:      */
 48:     protected function _render()
 49:     {
 50:         return $this->_renderFullReturn($this->_renderInline());
 51:     }
 52: 
 53:     /**
 54:      * Return the rendered inline version of the Horde_Mime_Part object.
 55:      *
 56:      * @return array  See parent::render().
 57:      */
 58:     protected function _renderInline()
 59:     {
 60:         $this->_content = '';
 61: 
 62:         /* Create a new parser and set its default properties. */
 63:         $this->_parser = xml_parser_create();
 64:         xml_set_object($this->_parser, $this);
 65:         xml_set_element_handler($this->_parser, '_startElement', '_endElement');
 66:         xml_set_character_data_handler($this->_parser, '_defaultHandler');
 67:         xml_parse($this->_parser, $this->_mimepart->getContents(), true);
 68:         xml_parser_free($this->_parser);
 69: 
 70:         return $this->_renderReturn(
 71:             $this->_content,
 72:             'text/html; charset=UTF-8'
 73:         );
 74:     }
 75: 
 76:     /**
 77:      * User-defined function callback for start elements.
 78:      *
 79:      * @param object $parser  Handle to the parser instance.
 80:      * @param string $name    The name of this XML element.
 81:      * @param array $attrs    List of this element's attributes.
 82:      */
 83:     protected function _startElement($parser, $name, $attrs)
 84:     {
 85:         switch ($name) {
 86:         case 'IMG':
 87:             if (isset($attrs['SRC'])) {
 88:                 $this->_content .= '<img src="' . htmlspecialchars($attrs['SRC']) . '" />';
 89:             }
 90:             break;
 91:         }
 92:     }
 93: 
 94:     /**
 95:      * User-defined function callback for end elements.
 96:      *
 97:      * @param object $parser  Handle to the parser instance.
 98:      * @param string $name    The name of this XML element.
 99:      */
100:     protected function _endElement($parser, $name)
101:     {
102:     }
103: 
104:     /**
105:      * User-defined function callback for character data.
106:      *
107:      * @param object $parser  Handle to the parser instance.
108:      * @param string $data    String of character data.
109:      */
110:     protected function _defaultHandler($parser, $data)
111:     {
112:         $data = trim($data);
113:         if (!empty($data)) {
114:             $this->_content .= ' ' . htmlspecialchars($data);
115:         }
116:     }
117: 
118: }
119: