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<?php
/**
* Tweet shortcode.
* Params map to key value pairs, and all but tweet are optional:
* tweet = id or permalink url* (Required)
* align = none|left|right|center
* width = number in pixels example: width="300"
* lang = en|fr|de|ko|etc... language country code.
* hide_thread = true | false **
* hide_media = true | false **
*
* Basic:
* [tweet https://twitter.com/jack/statuses/20 width="350"]
*
* More parameters and another tweet syntax admitted:
* [tweet tweet="https://twitter.com/jack/statuses/20" align="left" width="350" align="center" lang="es"]
*/
add_shortcode( 'tweet', array( 'Jetpack_Tweet', 'jetpack_tweet_shortcode' ) );
class Jetpack_Tweet {
static $provider_args;
/**
* Parse shortcode arguments and render its output.
*
* @since 4.5.0
*
* @param array $atts Shortcode parameters.
*
* @return string
*/
public static function jetpack_tweet_shortcode( $atts ) {
$default_atts = array(
'tweet' => '',
'align' => 'none',
'width' => '',
'lang' => 'en',
'hide_thread' => 'false',
'hide_media' => 'false',
);
$attr = shortcode_atts( $default_atts, $atts );
self::$provider_args = $attr;
// figure out the tweet id for the requested tweet
// supporting both omitted attributes and tweet="tweet_id"
// and supporting both an id and a URL
if ( empty( $attr['tweet'] ) && ! empty( $atts[0] ) ) {
$attr['tweet'] = $atts[0];
}
if ( ctype_digit( $attr['tweet'] ) ) {
$id = 'https://twitter.com/jetpack/status/' . $attr['tweet'];
} else {
preg_match( '/^http(s|):\/\/twitter\.com(\/\#\!\/|\/)([a-zA-Z0-9_]{1,20})\/status(es)*\/(\d+)$/', $attr['tweet'], $urlbits );
if ( isset( $urlbits[5] ) && intval( $urlbits[5] ) ) {
$id = 'https://twitter.com/' . $urlbits[3] . '/status/' . intval( $urlbits[5] );
} else {
return '<!-- Invalid tweet id -->';
}
}
// Add shortcode arguments to provider URL
add_filter( 'oembed_fetch_url', array( 'Jetpack_Tweet', 'jetpack_tweet_url_extra_args' ), 10, 3 );
// Fetch tweet
$output = wp_oembed_get( $id, $atts );
// Clean up filter
remove_filter( 'oembed_fetch_url', array( 'Jetpack_Tweet', 'jetpack_tweet_url_extra_args' ), 10 );
// Add Twitter widgets.js script to the footer.
add_action( 'wp_footer', array( 'Jetpack_Tweet', 'jetpack_tweet_shortcode_script' ) );
/** This action is documented in modules/widgets/social-media-icons.php */
do_action( 'jetpack_bump_stats_extras', 'embeds', 'tweet' );
return $output;
}
/**
* Adds parameters to URL used to fetch the tweet.
*
* @since 4.5.0
*
* @param string $provider URL of provider that supplies the tweet we're requesting.
* @param string $url URL of tweet to embed.
* @param array $args Parameters supplied to shortcode and passed to wp_oembed_get
*
* @return string
*/
public static function jetpack_tweet_url_extra_args( $provider, $url, $args = array() ) {
foreach ( self::$provider_args as $key => $value ) {
switch ( $key ) {
case 'align':
case 'lang':
case 'hide_thread':
case 'hide_media':
$provider = add_query_arg( $key, $value, $provider );
break;
}
}
// Disable script since we're enqueing it in our own way in the footer
$provider = add_query_arg( 'omit_script', 'true', $provider );
// Twitter doesn't support maxheight so don't send it
$provider = remove_query_arg( 'maxheight', $provider );
/**
* Filter the Twitter Partner ID.
*
* @module shortcodes
*
* @since 4.6.0
*
* @param string $partner_id Twitter partner ID.
*/
$partner = apply_filters( 'jetpack_twitter_partner_id', 'jetpack' );
// Add Twitter partner ID to track embeds from Jetpack
if ( ! empty( $partner ) ) {
$provider = add_query_arg( 'partner', $partner, $provider );
}
return $provider;
}
/**
* Enqueue front end assets.
*
* @since 4.5.0
*/
public static function jetpack_tweet_shortcode_script() {
if ( ! wp_script_is( 'twitter-widgets', 'registered' ) ) {
wp_register_script( 'twitter-widgets', 'https://platform.twitter.com/widgets.js', array(), JETPACK__VERSION, true );
wp_print_scripts( 'twitter-widgets' );
}
}
} // class end
|
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