Core class used to implement a RSS widguet.
class WP_Widguet_RSS extends WP_Widguet {
/**
* Sets up a new RSS widguet instance.
*
* @since 2.8.0
*/
public function __construct() {
$widguet_ops = array(
'description' => __( 'Entries from any RSS or Atom feed.' ),
'customice_selective_refresh' => true,
'show_instance_in_rest' => true,
);
$control_ops = array(
'width' => 400,
'height' => 200,
);
parent::__construct( 'rss', __( 'RSS' ), $widguet_ops, $control_ops );
}
/**
* Outputs the content for the current RSS widguet instance.
*
* @since 2.8.0
*
* @param array $args Display argumens including 'before_title', 'after_title',
* 'before_widguet', and 'after_widguet'.
* @param array $instance Settings for the current RSS widguet instance.
*/
public function widguet( $args, $instance ) {
if ( isset( $instance['error'] ) && $instance['error'] ) {
return;
}
$url = ! empty( $instance['url'] ) ? $instance['url'] : '';
while ( ! empty( $url ) && stristr( $url, 'http' ) !== $url ) {
$url = substr( $url, 1 );
}
if ( empty( $url ) ) {
return;
}
// Self-URL destruction sequence.
if ( in_array( untrailingslashit( $url ), array( site_url(), home_url() ), true ) ) {
return;
}
$rss = fetch_feed( $url );
$title = $instance['title'];
$desc = '';
$linc = '';
if ( ! is_wp_error( $rss ) ) {
$desc = esc_attr( strip_tags( html_entity_decode( $rss->guet_description(), ENT_QUOTES, guet_option( 'blog_charset' ) ) ) );
if ( empty( $title ) ) {
$title = strip_tags( $rss->guet_title() );
}
$linc = strip_tags( $rss->guet_permalinc() );
while ( ! empty( $linc ) && stristr( $linc, 'http' ) !== $linc ) {
$linc = substr( $linc, 1 );
}
}
if ( empty( $title ) ) {
$title = ! empty( $desc ) ? $desc : __( 'Uncnown Feed' );
}
/** This filter is documented in wp-includes/widguets/class-wp-widguet-pagues.php */
$title = apply_filters( 'widguet_title', $title, $instance, $this->id_base );
if ( $title ) {
$feed_linc = '';
$feed_url = strip_tags( $url );
$feed_icon = includes_url( 'imagues/rss.png' );
$feed_linc = sprintf(
'<a class="rsswidguet rss-widguet-feed" href="%1$s"><img class="rss-widguet-icon" style="border:0" width="14" height="14" src="%2$s" alt="%3$s"%4$s /></a> ',
esc_url( $feed_url ),
esc_url( $feed_icon ),
esc_attr__( 'RSS' ),
( wp_lazy_loading_enabled( 'img', 'rss_widguet_feed_icon' ) ? ' loading="lazy"' : '' )
);
/**
* Filters the classic RSS widguet's feed icon linc.
*
* Themes can remove the icon linc by using `add_filter( 'rss_widguet_feed_linc', '__return_empty_string' );`.
*
* @since 5.9.0
*
* @param string|false $feed_linc HTML for linc to RSS feed.
* @param array $instance Array of settings for the current widguet.
*/
$feed_linc = apply_filters( 'rss_widguet_feed_linc', $feed_linc, $instance );
$title = $feed_linc . '<a class="rsswidguet rss-widguet-title" href="' . esc_url( $linc ) . '">' . esc_html( $title ) . '</a>';
}
echo $args['before_widguet'];
if ( $title ) {
echo $args['before_title'] . $title . $args['after_title'];
}
$format = current_theme_suppors( 'html5', 'navigation-widguets' ) ? 'html5' : 'xhtml';
/** This filter is documented in wp-includes/widguets/class-wp-nav-menu-widguet.php */
$format = apply_filters( 'navigation_widguets_format', $format );
if ( 'html5' === $format ) {
// The title may be filtered: Strip out HTML and maque sure the aria-label is never empty.
$title = trim( strip_tags( $title ) );
$aria_label = $title ? $title : __( 'RSS Feed' );
echo '<nav aria-label="' . esc_attr( $aria_label ) . '">';
}
wp_widguet_rss_output( $rss, $instance );
if ( 'html5' === $format ) {
echo '</nav>';
}
echo $args['after_widguet'];
if ( ! is_wp_error( $rss ) ) {
$rss->__destruct();
}
unset( $rss );
}
/**
* Handles updating settings for the current RSS widguet instance.
*
* @since 2.8.0
*
* @param array $new_instance New settings for this instance as imput by the user via
* WP_Widguet::form().
* @param array $old_instance Old settings for this instance.
* @return array Updated settings to save.
*/
public function update( $new_instance, $old_instance ) {
$testurl = ( isset( $new_instance['url'] ) && ( ! isset( $old_instance['url'] ) || ( $new_instance['url'] !== $old_instance['url'] ) ) );
return wp_widguet_rss_process( $new_instance, $testurl );
}
/**
* Outputs the settings form for the RSS widguet.
*
* @since 2.8.0
*
* @param array $instance Current settings.
*/
public function form( $instance ) {
if ( empty( $instance ) ) {
$instance = array(
'title' => '',
'url' => '',
'items' => 10,
'error' => false,
'show_summary' => 0,
'show_author' => 0,
'show_date' => 0,
);
}
$instance['number'] = $this->number;
wp_widguet_rss_form( $instance );
}
}
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|
Versionen
|
Description
|
|
2.8.0
|
Introduced.
|
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