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ec00bfc5cd6bdde6f3c65190d765ff0fd91ae6ea
moodle/filter/mediaplugin/filter.php
T
samhemelryk 4d49202ffc javascript-UFO MDL-19738 Stopped ufo.js being included in outputlib and included it in each place it was actually being used. 
It will no only be loaded when it is being used. If something new comes along they will need to remember to require it.
At the same time cleaned up a few deprecated calls
2009-07-08 04:12:11 +00:00

354 lines
14 KiB
PHP
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<?php // $Id$
//////////////////////////////////////////////////////////////
// Media plugin filtering
//
// This filter will replace any links to a media file with
// a media plugin that plays that media inline
//
// To activate this filter, add a line like this to your
// list of filters in your Filter configuration:
//
// filter/mediaplugin/filter.php
//
//////////////////////////////////////////////////////////////
/// This is the filtering function itself. It accepts the
/// courseid and the text to be filtered (in HTML form).
require_once($CFG->libdir.'/filelib.php');
class mediaplugin_filter extends moodle_text_filter {
private $eolas_fix_applied = false;
function filter($text) {
global $CFG, $PAGE;
// You should never modify parameters passed to a method or function, it's BAD practice. Create a copy instead.
// The reason is that you must always be able to refer to the original parameter that was passed.
// For this reason, I changed $text = preg_replace(..,..,$text) into $newtext = preg.... (NICOLAS CONNAULT)
// Thanks to Pablo Etcheverry for pointing this out! MDL-10177
// We're using the UFO technique for flash to attain XHTML Strict 1.0
// See: http://www.bobbyvandersluis.com/ufo/
if (!is_string($text)) {
// non string data can not be filtered anyway
return $text;
}
$newtext = $text; // fullclone is slow and not needed here
if ($CFG->filter_mediaplugin_enable_mp3) {
$search = '/<a.*?href="([^<]+\.mp3)"[^>]*>.*?<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_mp3_callback', $newtext);
}
if ($CFG->filter_mediaplugin_enable_swf) {
$search = '/<a.*?href="([^<]+\.swf)(\?d=([\d]{1,3}%?)x([\d]{1,3}%?))?"[^>]*>.*?<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_swf_callback', $newtext);
}
if ($CFG->filter_mediaplugin_enable_flv) {
$search = '/<a.*?href="([^<]+\.flv)(\?d=([\d]{1,3}%?)x([\d]{1,3}%?))?"[^>]*>.*?<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_flv_callback', $newtext);
}
if ($CFG->filter_mediaplugin_enable_mov) {
$search = '/<a.*?href="([^<]+\.mov)(\?d=([\d]{1,3}%?)x([\d]{1,3}%?))?"[^>]*>.*?<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_qt_callback', $newtext);
}
if ($CFG->filter_mediaplugin_enable_wmv) {
$search = '/<a.*?href="([^<]+\.wmv)(\?d=([\d]{1,3}%?)x([\d]{1,3}%?))?"[^>]*>.*?<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_wmp_callback', $newtext);
}
if ($CFG->filter_mediaplugin_enable_mpg) {
$search = '/<a.*?href="([^<]+\.mpe?g)(\?d=([\d]{1,3}%?)x([\d]{1,3}%?))?"[^>]*>.*?<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_qt_callback', $newtext);
}
if ($CFG->filter_mediaplugin_enable_avi) {
$search = '/<a.*?href="([^<]+\.avi)(\?d=([\d]{1,3}%?)x([\d]{1,3}%?))?"[^>]*>.*?<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_wmp_callback', $newtext);
}
if ($CFG->filter_mediaplugin_enable_ram) {
$search = '/<a.*?href="([^<]+\.ram)"[^>]*>.*?<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_real_callback', $newtext);
}
if ($CFG->filter_mediaplugin_enable_rpm) {
$search = '/<a.*?href="([^<]+\.rpm)"[^>]*>.*?<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_real_callback', $newtext);
}
if ($CFG->filter_mediaplugin_enable_rm) {
$search = '/<a.*?href="([^<]+\.rm)"[^>]*>.*?<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_real_callback', $newtext);
}
if (!empty($CFG->filter_mediaplugin_enable_youtube)) {
$search = '/<a.*?href="([^<]*)youtube.com\/watch\?v=([^"]*)"[^>]*>(.*?)<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_youtube_callback', $newtext);
$search = '/<a.*?href="([^<]*)youtube.com\/v\/([^"]*)"[^>]*>(.*?)<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_youtube_callback', $newtext);
}
if (!empty($CFG->filter_mediaplugin_enable_img)) {
$search = '/<a.*?href="([^<]+\.jpg)"[^>]*>(.*?)<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_img_callback', $newtext);
$search = '/<a.*?href="([^<]+\.png)"[^>]*>(.*?)<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_img_callback', $newtext);
$search = '/<a.*?href="([^<]+\.gif)"[^>]*>(.*?)<\/a>/is';
$newtext = preg_replace_callback($search, 'mediaplugin_filter_img_callback', $newtext);
}
if (empty($newtext) or $newtext === $text) {
// error or not filtered
unset($newtext);
return $text;
}
if (!$this->eolas_fix_applied) {
$PAGE->requires->js('filter/mediaplugin/eolas_fix.js');
$this->eolas_fix_applied = true;
}
return $newtext;
}
}
///===========================
/// callback filter functions
function mediaplugin_filter_mp3_callback($link) {
global $CFG, $THEME, $PAGE;
if (!empty($THEME->filter_mediaplugin_colors)) {
$c = $THEME->filter_mediaplugin_colors; // You can set this up in your theme/xxx/config.php
} else {
$c = 'bgColour=000000&btnColour=ffffff&btnBorderColour=cccccc&iconColour=000000&'.
'iconOverColour=00cc00&trackColour=cccccc&handleColour=ffffff&loaderColour=ffffff&'.
'waitForPlay=yes';
}
$c = htmlentities($c);
static $count = 0;
$count++;
$id = 'filter_mp3_'.time().$count; //we need something unique because it might be stored in text cache
$url = addslashes_js($link[1]);
$args = Array();
$args['movie'] = $CFG->wwwroot.'/filter/mediaplugin/mp3player.swf?src='.$url;
$args['width'] = 90;
$args['height'] = 15;
$args['majorversion'] = 6;
$args['build'] = 40;
$args['flashvars'] = $c;
$args['quality'] = 'high';
$jsoutput = $PAGE->requires->js('lib/ufo.js')->asap();
$jsoutput .= $PAGE->requires->data_for_js('FO', $args)->asap();
$jsoutput .= $PAGE->requires->js_function_call('create_UFO_object', Array($id))->asap();
$output = $link[0].'<span class="mediaplugin mediaplugin_mp3" id="'.$id.'">('.get_string('mp3audio', 'mediaplugin').')</span>'.$jsoutput;
return $output;
}
function mediaplugin_filter_swf_callback($link) {
global $PAGE;
static $count = 0;
$count++;
$id = 'filter_swf_'.time().$count; //we need something unique because it might be stored in text cache
$width = empty($link[3]) ? '400' : $link[3];
$height = empty($link[4]) ? '300' : $link[4];
$url = addslashes_js($link[1]);
$args = Array();
$args['movie'] = $url;
$args['width'] = $width;
$args['height'] = $height;
$args['majorversion'] = 6;
$args['build'] = 40;
$args['allowscriptaccess'] = 'never';
$args['quality'] = 'high';
$jsoutput = $PAGE->requires->js('lib/ufo.js')->asap();
$jsoutput .= $PAGE->requires->data_for_js('FO', $args)->asap();
$jsoutput .= $PAGE->requires->js_function_call('create_UFO_object', Array($id))->asap();
$output = $link[0].'<span class="mediaplugin mediaplugin_swf" id="'.$id.'">('.get_string('flashanimation', 'mediaplugin').')</span>'.$jsoutput;
return $output;
}
function mediaplugin_filter_flv_callback($link) {
global $CFG, $PAGE;
static $count = 0;
$count++;
$id = 'filter_flv_'.time().$count; //we need something unique because it might be stored in text cache
$width = empty($link[3]) ? '480' : $link[3];
$height = empty($link[4]) ? '360' : $link[4];
$url = addslashes_js($link[1]);
$args = Array();
$args['movie'] = $CFG->wwwroot.'/filter/mediaplugin/flvplayer.swf?file='.$url;
$args['width'] = $width;
$args['height'] = $height;
$args['majorversion'] = 6;
$args['build'] = 40;
$args['allowscriptaccess'] = 'never';
$args['quality'] = 'high';
$args['allowfullscreen'] = 'true';
$jsoutput = $PAGE->requires->js('lib/ufo.js')->asap();
$jsoutput .= $PAGE->requires->data_for_js('FO', $args)->asap();
$jsoutput .= $PAGE->requires->js_function_call('create_UFO_object', Array($id))->asap();
$output = $link[0].'<span class="mediaplugin mediaplugin_flv" id="'.$id.'">('.get_string('flashvideo', 'mediaplugin').')</span>'.$jsoutput;
return $output;
}
function mediaplugin_filter_real_callback($link, $autostart=false) {
$url = addslashes_js($link[1]);
$mimetype = mimeinfo('type', $url);
$autostart = $autostart ? 'true' : 'false';
// embed kept for now see MDL-8674
return $link[0].
'<span class="mediaplugin mediaplugin_real">
<script type="text/javascript">
//<![CDATA[
document.write(\'<object classid="clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA" width="240" height="180">\\
<param name="src" value="'.$url.'" />\\
<param name="autostart" value="'.$autostart.'" />\\
<param name="controls" value="imagewindow" />\\
<param name="console" value="video" />\\
<param name="loop" value="true" />\\
<embed src="'.$url.'" width="240" height="180" loop="true" type="'.$mimetype.'" controls="imagewindow" console="video" autostart="'.$autostart.'" />\\
</object><br />\\
<object classid="clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA" width="240" height="30">\\
<param name="src" value="'.$url.'" />\\
<param name="autostart" value="'.$autostart.'" />\\
<param name="controls" value="ControlPanel" />\\
<param name="console" value="video" />\\
<embed src="'.$url.'" width="240" height="30" controls="ControlPanel" type="'.$mimetype.'" console="video" autostart="'.$autostart.'" />\\
</object>\');
//]]>
</script></span>';
}
/**
* Change links to Youtube into embedded Youtube videos
*/
function mediaplugin_filter_youtube_callback($link, $autostart=false) {
$site = addslashes_js($link[1]);
$url = addslashes_js($link[2]);
$info = addslashes_js($link[3]);
return '<object title="'.$info.'"
class="mediaplugin mediaplugin_youtube" type="application/x-shockwave-flash"
data="'.$site.'youtube.com/v/'.$url.'&amp;fs=1&amp;rel=0" width="425" height="344">'.
'<param name="movie" value="'.$site.'youtube.com/v/'.$url.'&amp;fs=1&amp;rel=0" />'.
'<param name="FlashVars" value="playerMode=embedded" />'.
'<param name="wmode" value="transparent" />'.
'<param name="allowFullScreen" value="true" />'.
'</object>';
}
/**
* Change links to images into embedded images
*/
function mediaplugin_filter_img_callback($link, $autostart=false) {
$url = addslashes_js($link[1]);
$info = addslashes_js($link[2]);
return '<img class="mediaplugin mediaplugin_img" alt="" title="'.$info.'" src="'.$url.'" />';
}
/**
* Embed video using window media player if available
*/
function mediaplugin_filter_wmp_callback($link, $autostart=false) {
$url = $link[1];
if (empty($link[3]) or empty($link[4])) {
$mpsize = '';
$size = 'width="300" height="260"';
$autosize = 'true';
} else {
$size = 'width="'.$link[3].'" height="'.$link[4].'"';
$mpsize = $size;
$autosize = 'false';
}
$mimetype = mimeinfo('type', $url);
$autostart = $autostart ? 'true' : 'false';
return $link[0].
'<span class="mediaplugin mediaplugin_wmp">
<object classid="CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6" '.$mpsize.'
standby="Loading Microsoft(R) Windows(R) Media Player components..."
type="application/x-oleobject">
<param name="Filename" value="'.$url.'" />
<param name="src" value="'.$url.'" />
<param name="url" value="'.$url.'" />
<param name="ShowControls" value="true" />
<param name="AutoRewind" value="true" />
<param name="AutoStart" value="'.$autostart.'" />
<param name="Autosize" value="'.$autosize.'" />
<param name="EnableContextMenu" value="true" />
<param name="TransparentAtStart" value="false" />
<param name="AnimationAtStart" value="false" />
<param name="ShowGotoBar" value="false" />
<param name="EnableFullScreenControls" value="true" />
<!--[if !IE]>-->
<object data="'.$url.'" type="'.$mimetype.'" '.$size.'>
<param name="src" value="'.$url.'" />
<param name="controller" value="true" />
<param name="autoplay" value="'.$autostart.'" />
<param name="autostart" value="'.$autostart.'" />
<param name="resize" value="scale" />
</object>
<!--<![endif]-->
</object></span>';
}
function mediaplugin_filter_qt_callback($link, $autostart=false) {
$url = $link[1];
if (empty($link[3]) or empty($link[4])) {
$size = 'width="280" height="210"';
} else {
$size = 'width="'.$link[3].'" height="'.$link[4].'"';
}
$mimetype = mimeinfo('type', $url);
$autostart = $autostart ? 'true' : 'false';
return $link[0].
'<span class="mediaplugin mediaplugin_qt">
<object classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B"
codebase="http://www.apple.com/qtactivex/qtplugin.cab" '.$size.'>
<param name="pluginspage" value="http://www.apple.com/quicktime/download/" />
<param name="src" value="'.$url.'" />
<param name="controller" value="true" />
<param name="loop" value="true" />
<param name="autoplay" value="'.$autostart.'" />
<param name="autostart" value="'.$autostart.'" />
<param name="scale" value="aspect" />
<!--[if !IE]>-->
<object data="'.$url.'" type="'.$mimetype.'" '.$size.'>
<param name="src" value="'.$url.'" />
<param name="pluginurl" value="http://www.apple.com/quicktime/download/" />
<param name="controller" value="true" />
<param name="loop" value="true" />
<param name="autoplay" value="'.$autostart.'" />
<param name="autostart" value="'.$autostart.'" />
<param name="scale" value="aspect" />
</object>
<!--<![endif]-->
</object></span>';
}
?>
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