1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
<?php
/**
* 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,
);
$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 ( 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() ) ) ) {
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 ( 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 );
$url = strip_tags( $url );
$icon = includes_url( 'images/rss.png' );
if ( $title ) {
$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>';
}
echo $args['before_widget'];
if ( $title ) {
echo $args['before_title'] . $title . $args['after_title'];
}
wp_widget_rss_output( $rss, $instance );
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 );
}
}
|