145 lines
3.8 KiB
PHP
145 lines
3.8 KiB
PHP
<?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( $url ), array( site_url(), home_url() ), true ) ) {
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return;
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}
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$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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