Provides an implementation of BuddyPress sitewide message function in a widget for use in site sidebars, can replace BP legacy_theme wp_footer rendering.

BP Sitewide messages widget

add_action('widgets_init', create_function('', 'return register_widget("HNLA_bp_sitewide_messages_Widget");') );

class HNLA_bp_sitewide_messages_Widget extends WP_Widget {

	function __construct() {	
		parent::__construct(
			'HNLA_bp_sitewide_messages_Widget', //the ID?
			'HNLA BP Sitewide Messages', //the widget name
			array( 'description' => __('Displays the BP admin \'all users\' sitewide messages', 'meson'), )
		);
	}

	public function widget( $args, $instance ) {
		global $bp, $wp, $wpdb;
		
		if( !is_user_logged_in() || is_super_admin() )
			return;
			
		extract( $args );
  
		$title = apply_filters( 'widget_title', empty($instance['title']) ? $widget_name : $instance['title'], $instance );
		
		echo $before_widget;
		echo $before_title .
		 	$title .
		  $after_title; 
 	
		// output content to display ?>
	
			<?php if ( bp_is_active( 'messages' )  ) : ?>
			
				<div class="bp-site-wide-message">
					<?php bp_message_get_notices();  ?>
				</div>
			
			<?php endif; ?>

 	<?php
		//end  markup output
	
	echo $after_widget;
	
	}// close function widget
	
	public function update( $new_instance, $old_instance ) {
		$instance = $old_instance;
		$instance['title'] = strip_tags($new_instance['title']);
		return $instance;
	} 
	public function form( $instance ) {
		$instance = wp_parse_args( (array) $instance, array( 'title' => '') );
		$title = strip_tags($instance['title']);
  
  ?>
		<p>
  <label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:'); ?></label>
		<input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo esc_attr($title); ?>" />
  </p>
		<?php }	
}