script_var = strtolower(__CLASS__);
$this->handle = str_replace('_', '-', $this->script_var);
$this->results = $this->handle . '-feed';
add_action( 'wp_ajax_'.$this->script_var, array($this, 'get_feeds_ajax') );
}
function enqueue_scripts() {
wp_enqueue_script($this->handle, plugins_url('scripts/jquery.news.js', dirname(__FILE__)), array('jquery'), $this->get_version(), true);
wp_localize_script($this->handle, $this->script_var,
array(
'ajaxurl' => admin_url( 'admin-ajax.php' ),
'ajaxnonce' => wp_create_nonce( $this->script_var.'_nonce' ),
'ajaxaction' => $this->script_var,
'ajaxresults' => '.'.$this->results
)
);
}
function display_feeds($feeds = array()) {
$feeds = apply_filters($this->script_var, $feeds);
if (is_array($feeds) && (count($feeds) > 0)) {
printf ('', $this->results);
for($index=0; $index < count($feeds); $index++ ) {
wp_localize_script( $this->handle, $this->script_var.$index, array( 'feedurl' => $feeds[$index]) );
}
}
}
function get_feeds_ajax() {
check_ajax_referer( $this->script_var.'_nonce', 'security' );
$url = isset($_POST['url']) ? $_POST['url'] : '';
if (empty($url)) wp_send_json_error( array( 'error' => $this->get_message( 'feed_missing' ) ) );
$instance = array('url' => $url, 'show_summary' => false, 'show_featured' => true);
$feed = $this->get_rss_feed_instance($instance);
if( isset( $feed ) )
wp_send_json_success( $feed );
else
wp_send_json_error( array( 'error' => sprintf($this->get_message('feed_failure'), $url ) ) );
}
function get_rss_feed_instance( $instance ) {
$url = ! empty( $instance['url'] ) ? $instance['url'] : '';
while ( stristr($url, 'http') != $url )
$url = substr($url, 1);
if ( empty($url) )
return;
if ( in_array( untrailingslashit( $url ), array( site_url(), home_url() ) ) )
return;
$rss = fetch_feed($url);
if ( is_wp_error($rss) ) {
if ( is_admin() || current_user_can('manage_options') )
echo '' . sprintf( __('%1$s: %2$s'), $this->get_message('feed_error') , $rss->get_error_message() ) . '
';
return;
}
$default_args = array( 'show_featured' => 0, 'show_summary' => 0, 'show_author' => 0, 'show_date' => 0, 'items' => 0 );
if (($parsed_url = parse_url($url))
&& ($query = isset($parsed_url['query']) ? $parsed_url['query'] : '')) {
$instance = wp_parse_args($query, $default_args);
}
$args = wp_parse_args( $instance, $default_args );
$items = (int) $args['items'];
if ( $items < 1 || 20 < $items ) $items = 10;
$show_featured = (int) $args['show_featured'];
$show_summary = (int) $args['show_summary'];
$show_author = (int) $args['show_author'];
$show_date = (int) $args['show_date'];
if ( !$rss->get_item_quantity() ) {
return '' .$this->message('feed_empty') . '
';
}
$results = '';
foreach ( $rss->get_items( 0, $items ) as $item ) {
$link = $item->get_link();
while ( stristr( $link, 'http' ) != $link ) {
$link = substr( $link, 1 );
}
$link = esc_url( strip_tags( $link ) );
$title = esc_html( trim( strip_tags( $item->get_title() ) ) );
$link_title = '';
$desc = @html_entity_decode( $item->get_description(), ENT_QUOTES, get_option( 'blog_charset' ) );
if (substr($desc,0,5) == '![]()
');
$link_title = sprintf(' title="%1$s"', $title);
$title = substr($desc,0, $end_image+1);
$desc = substr($desc, $end_image+1);
} else {
if ($show_featured)
continue; //skip items with missing featured images
}
$desc = esc_attr( wp_trim_words( $desc, 55, ' […]' ) );
$summary = '';
if ( $show_summary ) {
$summary = $desc;
// Change existing [...] to […].
if ( '[...]' == substr( $summary, -5 ) ) {
$summary = substr( $summary, 0, -5 ) . '[…]';
}
$summary = '';
}
$date = '';
if ( $show_date ) {
$date = $item->get_date( 'U' );
if ( $date ) {
$date = ' ';
}
}
$author = '';
if ( $show_author ) {
$author = $item->get_author();
if ( is_object($author) ) {
$author = $author->get_name();
$author = ' ' . esc_html( strip_tags( $author ) ) . '';
}
}
if ($link) $title = sprintf('', $link, $link_title, $title);
$results .= sprintf('', $title, $date, $summary, $author, $this->results );
}
if ( ! is_wp_error($rss) )
$rss->__destruct();
unset($rss);
return $results;
}
}