Source
File: wp-includes/widgets/class-wp-widget-custom-html.php
public function widget( $args, $instance ) {
global $post;
// Override global $post so filters (and shortcodes) apply in a consistent context.
$original_post = $post;
if ( is_singular() ) {
// Make sure post is always the queried object on singular queries (not from another sub-query that failed to clean up the global $post).
$post = get_queried_object();
} else {
// Nullify the $post global during widget rendering to prevent shortcodes from running with the unexpected context on archive queries.
$post = null;
}
// Prevent dumping out all attachments from the media library.
add_filter( 'shortcode_atts_gallery', array( $this, '_filter_gallery_shortcode_attrs' ) );
$instance = array_merge( $this->default_instance, $instance );
/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
$title = apply_filters( 'widget_title', $instance['title'], $instance, $this->id_base );
// Prepare instance data that looks like a normal Text widget.
$simulated_text_widget_instance = array_merge(
$instance,
array(
'text' => isset( $instance['content'] ) ? $instance['content'] : '',
'filter' => false, // Because wpautop is not applied.
'visual' => false, // Because it wasn't created in TinyMCE.
)
);
unset( $simulated_text_widget_instance['content'] ); // Was moved to 'text' prop.
/** This filter is documented in wp-includes/widgets/class-wp-widget-text.php */
$content = apply_filters( 'widget_text', $instance['content'], $simulated_text_widget_instance, $this );
// Adds noreferrer and noopener relationships, without duplicating values, to all HTML A elements that have a target.
$content = wp_targeted_link_rel( $content );
/**
* Filters the content of the Custom HTML widget.
*
* @since 4.8.1
*
* @param string $content The widget content.
* @param array $instance Array of settings for the current widget.
* @param WP_Widget_Custom_HTML $this Current Custom HTML widget instance.
*/
$content = apply_filters( 'widget_custom_html_content', $content, $instance, $this );
// Restore post global.
$post = $original_post;
remove_filter( 'shortcode_atts_gallery', array( $this, '_filter_gallery_shortcode_attrs' ) );
// Inject the Text widget's container class name alongside this widget's class name for theme styling compatibility.
$args['before_widget'] = preg_replace( '/(?<=\sclass=["\'])/', 'widget_text ', $args['before_widget'] );
echo $args['before_widget'];
if ( ! empty( $title ) ) {
echo $args['before_title'] . $title . $args['after_title'];
}
echo '<div class="textwidget custom-html-widget">'; // The textwidget class is for theme styling compatibility.
echo $content;
echo '</div>';
echo $args['after_widget'];
}