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1 <?php |
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2 /** |
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3 * Widget API: WP_Widget_RSS class |
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4 * |
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5 * @package WordPress |
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6 * @subpackage Widgets |
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7 * @since 4.4.0 |
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8 */ |
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9 |
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10 /** |
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11 * Core class used to implement a RSS widget. |
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12 * |
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13 * @since 2.8.0 |
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14 * |
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15 * @see WP_Widget |
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16 */ |
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17 class WP_Widget_RSS extends WP_Widget { |
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18 |
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19 /** |
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20 * Sets up a new RSS widget instance. |
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21 * |
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22 * @since 2.8.0 |
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23 */ |
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24 public function __construct() { |
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25 $widget_ops = array( |
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26 'description' => __( 'Entries from any RSS or Atom feed.' ), |
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27 'customize_selective_refresh' => true, |
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28 ); |
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29 $control_ops = array( 'width' => 400, 'height' => 200 ); |
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30 parent::__construct( 'rss', __( 'RSS' ), $widget_ops, $control_ops ); |
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31 } |
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32 |
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33 /** |
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34 * Outputs the content for the current RSS widget instance. |
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35 * |
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36 * @since 2.8.0 |
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37 * |
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38 * @param array $args Display arguments including 'before_title', 'after_title', |
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39 * 'before_widget', and 'after_widget'. |
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40 * @param array $instance Settings for the current RSS widget instance. |
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41 */ |
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42 public function widget( $args, $instance ) { |
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43 if ( isset($instance['error']) && $instance['error'] ) |
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44 return; |
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45 |
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46 $url = ! empty( $instance['url'] ) ? $instance['url'] : ''; |
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47 while ( stristr($url, 'http') != $url ) |
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48 $url = substr($url, 1); |
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49 |
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50 if ( empty($url) ) |
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51 return; |
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52 |
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53 // self-url destruction sequence |
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54 if ( in_array( untrailingslashit( $url ), array( site_url(), home_url() ) ) ) |
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55 return; |
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56 |
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57 $rss = fetch_feed($url); |
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58 $title = $instance['title']; |
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59 $desc = ''; |
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60 $link = ''; |
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61 |
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62 if ( ! is_wp_error($rss) ) { |
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63 $desc = esc_attr(strip_tags(@html_entity_decode($rss->get_description(), ENT_QUOTES, get_option('blog_charset')))); |
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64 if ( empty($title) ) |
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65 $title = strip_tags( $rss->get_title() ); |
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66 $link = strip_tags( $rss->get_permalink() ); |
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67 while ( stristr($link, 'http') != $link ) |
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68 $link = substr($link, 1); |
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69 } |
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70 |
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71 if ( empty( $title ) ) { |
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72 $title = ! empty( $desc ) ? $desc : __( 'Unknown Feed' ); |
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73 } |
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74 |
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75 /** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ |
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76 $title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); |
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77 |
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78 $url = strip_tags( $url ); |
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79 $icon = includes_url( 'images/rss.png' ); |
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80 if ( $title ) |
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81 $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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82 |
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83 echo $args['before_widget']; |
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84 if ( $title ) { |
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85 echo $args['before_title'] . $title . $args['after_title']; |
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86 } |
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87 wp_widget_rss_output( $rss, $instance ); |
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88 echo $args['after_widget']; |
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89 |
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90 if ( ! is_wp_error($rss) ) |
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91 $rss->__destruct(); |
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92 unset($rss); |
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93 } |
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94 |
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95 /** |
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96 * Handles updating settings for the current RSS widget instance. |
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97 * |
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98 * @since 2.8.0 |
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99 * |
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100 * @param array $new_instance New settings for this instance as input by the user via |
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101 * WP_Widget::form(). |
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102 * @param array $old_instance Old settings for this instance. |
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103 * @return array Updated settings to save. |
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104 */ |
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105 public function update( $new_instance, $old_instance ) { |
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106 $testurl = ( isset( $new_instance['url'] ) && ( !isset( $old_instance['url'] ) || ( $new_instance['url'] != $old_instance['url'] ) ) ); |
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107 return wp_widget_rss_process( $new_instance, $testurl ); |
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108 } |
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109 |
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110 /** |
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111 * Outputs the settings form for the RSS widget. |
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112 * |
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113 * @since 2.8.0 |
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114 * |
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115 * @param array $instance Current settings. |
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116 */ |
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117 public function form( $instance ) { |
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118 if ( empty( $instance ) ) { |
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119 $instance = array( 'title' => '', 'url' => '', 'items' => 10, 'error' => false, 'show_summary' => 0, 'show_author' => 0, 'show_date' => 0 ); |
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120 } |
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121 $instance['number'] = $this->number; |
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122 |
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123 wp_widget_rss_form( $instance ); |
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124 } |
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125 } |