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144 lines
3.8 KiB
144 lines
3.8 KiB
<?php |
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/** |
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* Widget API: WP_Widget_RSS class |
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* |
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* @package WordPress |
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* @subpackage Widgets |
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* @since 4.4.0 |
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*/ |
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/** |
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* Core class used to implement a RSS widget. |
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* |
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* @since 2.8.0 |
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* |
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* @see WP_Widget |
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*/ |
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class WP_Widget_RSS extends WP_Widget { |
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/** |
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* Sets up a new RSS widget instance. |
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* |
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* @since 2.8.0 |
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*/ |
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public function __construct() { |
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$widget_ops = array( |
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'description' => __( 'Entries from any RSS or Atom feed.' ), |
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'customize_selective_refresh' => true, |
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); |
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$control_ops = array( |
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'width' => 400, |
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'height' => 200, |
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); |
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parent::__construct( 'rss', __( 'RSS' ), $widget_ops, $control_ops ); |
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} |
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/** |
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* Outputs the content for the current RSS widget instance. |
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* |
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* @since 2.8.0 |
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* |
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* @param array $args Display arguments including 'before_title', 'after_title', |
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* 'before_widget', and 'after_widget'. |
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* @param array $instance Settings for the current RSS widget instance. |
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*/ |
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public function widget( $args, $instance ) { |
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if ( isset( $instance['error'] ) && $instance['error'] ) { |
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return; |
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} |
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$url = ! empty( $instance['url'] ) ? $instance['url'] : ''; |
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while ( stristr( $url, 'http' ) != $url ) { |
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$url = substr( $url, 1 ); |
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} |
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if ( empty( $url ) ) { |
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return; |
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} |
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// self-url destruction sequence |
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if ( in_array( untrailingslashit( $url ), array( site_url(), home_url() ) ) ) { |
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return; |
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} |
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$rss = fetch_feed( $url ); |
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$title = $instance['title']; |
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$desc = ''; |
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$link = ''; |
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if ( ! is_wp_error( $rss ) ) { |
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$desc = esc_attr( strip_tags( html_entity_decode( $rss->get_description(), ENT_QUOTES, get_option( 'blog_charset' ) ) ) ); |
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if ( empty( $title ) ) { |
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$title = strip_tags( $rss->get_title() ); |
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} |
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$link = strip_tags( $rss->get_permalink() ); |
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while ( stristr( $link, 'http' ) != $link ) { |
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$link = substr( $link, 1 ); |
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} |
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} |
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if ( empty( $title ) ) { |
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$title = ! empty( $desc ) ? $desc : __( 'Unknown Feed' ); |
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} |
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/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ |
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$title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); |
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$url = strip_tags( $url ); |
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$icon = includes_url( 'images/rss.png' ); |
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if ( $title ) { |
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$title = '<a class="rsswidget" href="' . esc_url( $url ) . '"><img class="rss-widget-icon" style="border:0" width="14" height="14" src="' . esc_url( $icon ) . '" alt="RSS" /></a> <a class="rsswidget" href="' . esc_url( $link ) . '">' . esc_html( $title ) . '</a>'; |
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} |
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echo $args['before_widget']; |
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if ( $title ) { |
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echo $args['before_title'] . $title . $args['after_title']; |
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} |
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wp_widget_rss_output( $rss, $instance ); |
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echo $args['after_widget']; |
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if ( ! is_wp_error( $rss ) ) { |
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$rss->__destruct(); |
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} |
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unset( $rss ); |
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} |
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/** |
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* Handles updating settings for the current RSS widget instance. |
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* |
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* @since 2.8.0 |
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* |
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* @param array $new_instance New settings for this instance as input by the user via |
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* WP_Widget::form(). |
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* @param array $old_instance Old settings for this instance. |
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* @return array Updated settings to save. |
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*/ |
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public function update( $new_instance, $old_instance ) { |
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$testurl = ( isset( $new_instance['url'] ) && ( ! isset( $old_instance['url'] ) || ( $new_instance['url'] != $old_instance['url'] ) ) ); |
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return wp_widget_rss_process( $new_instance, $testurl ); |
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} |
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/** |
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* Outputs the settings form for the RSS widget. |
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* |
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* @since 2.8.0 |
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* |
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* @param array $instance Current settings. |
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*/ |
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public function form( $instance ) { |
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if ( empty( $instance ) ) { |
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$instance = array( |
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'title' => '', |
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'url' => '', |
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'items' => 10, |
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'error' => false, |
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'show_summary' => 0, |
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'show_author' => 0, |
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'show_date' => 0, |
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); |
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} |
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$instance['number'] = $this->number; |
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wp_widget_rss_form( $instance ); |
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} |
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}
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