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/** | |
* Widget API: WP_Widget_RSS class | |
* | |
* @package WordPress | |
* @subpackage Widgets | |
* @since 4.4.0 | |
*/ | |
/** | |
* Core class used to implement a RSS widget. | |
* | |
* @since 2.8.0 | |
* | |
* @see WP_Widget | |
*/ | |
class WP_Widget_RSS extends WP_Widget { | |
/** | |
* Sets up a new RSS widget instance. | |
* | |
* @since 2.8.0 | |
*/ | |
public function __construct() { | |
$widget_ops = array( | |
'description' => __( 'Entries from any RSS or Atom feed.' ), | |
'customize_selective_refresh' => true, | |
'show_instance_in_rest' => true, | |
); | |
$control_ops = array( | |
'width' => 400, | |
'height' => 200, | |
); | |
parent::__construct( 'rss', __( 'RSS' ), $widget_ops, $control_ops ); | |
} | |
/** | |
* Outputs the content for the current RSS widget instance. | |
* | |
* @since 2.8.0 | |
* | |
* @param array $args Display arguments including 'before_title', 'after_title', | |
* 'before_widget', and 'after_widget'. | |
* @param array $instance Settings for the current RSS widget instance. | |
*/ | |
public function widget( $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 = ''; | |
$link = ''; | |
if ( ! is_wp_error( $rss ) ) { | |
$desc = esc_attr( strip_tags( html_entity_decode( $rss->get_description(), ENT_QUOTES, get_option( 'blog_charset' ) ) ) ); | |
if ( empty( $title ) ) { | |
$title = strip_tags( $rss->get_title() ); | |
} | |
$link = strip_tags( $rss->get_permalink() ); | |
while ( ! empty( $link ) && stristr( $link, 'http' ) !== $link ) { | |
$link = substr( $link, 1 ); | |
} | |
} | |
if ( empty( $title ) ) { | |
$title = ! empty( $desc ) ? $desc : __( 'Unknown Feed' ); | |
} | |
/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ | |
$title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); | |
if ( $title ) { | |
$feed_link = ''; | |
$feed_url = strip_tags( $url ); | |
$feed_icon = includes_url( 'images/rss.png' ); | |
$feed_link = sprintf( | |
'<a class="rsswidget rss-widget-feed" href="%1$s"><img class="rss-widget-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_widget_feed_icon' ) ? ' loading="lazy"' : '' ) | |
); | |
/** | |
* Filters the classic RSS widget's feed icon link. | |
* | |
* Themes can remove the icon link by using `add_filter( 'rss_widget_feed_link', '__return_empty_string' );`. | |
* | |
* @since 5.9.0 | |
* | |
* @param string|false $feed_link HTML for link to RSS feed. | |
* @param array $instance Array of settings for the current widget. | |
*/ | |
$feed_link = apply_filters( 'rss_widget_feed_link', $feed_link, $instance ); | |
$title = $feed_link . '<a class="rsswidget rss-widget-title" href="' . esc_url( $link ) . '">' . esc_html( $title ) . '</a>'; | |
} | |
echo $args['before_widget']; | |
if ( $title ) { | |
echo $args['before_title'] . $title . $args['after_title']; | |
} | |
$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml'; | |
/** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */ | |
$format = apply_filters( 'navigation_widgets_format', $format ); | |
if ( 'html5' === $format ) { | |
// The title may be filtered: Strip out HTML and make 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_widget_rss_output( $rss, $instance ); | |
if ( 'html5' === $format ) { | |
echo '</nav>'; | |
} | |
echo $args['after_widget']; | |
if ( ! is_wp_error( $rss ) ) { | |
$rss->__destruct(); | |
} | |
unset( $rss ); | |
} | |
/** | |
* Handles updating settings for the current RSS widget instance. | |
* | |
* @since 2.8.0 | |
* | |
* @param array $new_instance New settings for this instance as input by the user via | |
* WP_Widget::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_widget_rss_process( $new_instance, $testurl ); | |
} | |
/** | |
* Outputs the settings form for the RSS widget. | |
* | |
* @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_widget_rss_form( $instance ); | |
} | |
} | |