WP_Widget_Custom_HTML::widget( array $args, array $instance )

Source

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 'noopener' relationship, 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 $widget   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'];
}

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