functions.php

// Customize Lists in Recent Posts Widget
class Genesis_Widget_Recent_Posts extends WP_Widget {

 function __construct() {
 $widget_ops = array('classname' => 'widget_recent_entries', 'description' => __( "The most recent posts on your site") );
 parent::__construct('recent-posts', __('Recent Posts'), $widget_ops);
 $this->alt_option_name = 'widget_recent_entries';

 add_action( 'save_post', array($this, 'flush_widget_cache') );
 add_action( 'deleted_post', array($this, 'flush_widget_cache') );
 add_action( 'switch_theme', array($this, 'flush_widget_cache') );
 }

 function widget($args, $instance) {
 $cache = wp_cache_get('widget_recent_posts', 'widget');

 if ( !is_array($cache) )
 $cache = array();

 if ( ! isset( $args['widget_id'] ) )
 $args['widget_id'] = $this->id;

 if ( isset( $cache[ $args['widget_id'] ] ) ) {
 echo $cache[ $args['widget_id'] ];
 return;
 }

 ob_start();
 extract($args);

 $title = ( ! empty( $instance['title'] ) ) ? $instance['title'] : __( 'Recent Posts' );
 $title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
 $number = ( ! empty( $instance['number'] ) ) ? absint( $instance['number'] ) : 10;
 if ( ! $number )
 $number = 10;
 $show_date = isset( $instance['show_date'] ) ? $instance['show_date'] : false;

 $r = new WP_Query( apply_filters( 'widget_posts_args', array( 'posts_per_page' => $number, 'no_found_rows' => true, 'post_status' => 'publish', 'ignore_sticky_posts' => true ) ) );
 if ($r->have_posts()) :
?>
 <?php echo $before_widget; ?>
 <?php if ( $title ) echo $before_title . $title . $after_title; ?>
 <ul>
 <?php while ( $r->have_posts() ) : $r->the_post(); ?>
 <li class="custom-list">
 <a class="popular_content" href="<?php the_permalink() ?>" title="<?php echo esc_attr( get_the_title() ? get_the_title() : get_the_ID() ); ?>"><?php if ( get_the_title() ) the_title(); else the_ID(); ?></a>
 <?php if ( $show_date ) : ?>
 <span class="post-date"><?php echo get_the_date(); ?></span>
 <?php endif; ?>
 </li>
 <?php endwhile; ?>
 </ul>
 <?php echo $after_widget; ?>
<?php
 // Reset the global $the_post as this query will have stomped on it
 wp_reset_postdata();

 endif;

 $cache[$args['widget_id']] = ob_get_flush();
 wp_cache_set('widget_recent_posts', $cache, 'widget');
 }

 function update( $new_instance, $old_instance ) {
 $instance = $old_instance;
 $instance['title'] = strip_tags($new_instance['title']);
 $instance['number'] = (int) $new_instance['number'];
 $instance['show_date'] = (bool) $new_instance['show_date'];
 $this->flush_widget_cache();

 $alloptions = wp_cache_get( 'alloptions', 'options' );
 if ( isset($alloptions['widget_recent_entries']) )
 delete_option('widget_recent_entries');

 return $instance;
 }

 function flush_widget_cache() {
 wp_cache_delete('widget_recent_posts', 'widget');
 }

 function form( $instance ) {
 $title = isset( $instance['title'] ) ? esc_attr( $instance['title'] ) : '';
 $number = isset( $instance['number'] ) ? absint( $instance['number'] ) : 5;
 $show_date = isset( $instance['show_date'] ) ? (bool) $instance['show_date'] : false;
?>
 <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 $title; ?>" /></p>

 <p><label for="<?php echo $this->get_field_id( 'number' ); ?>"><?php _e( 'Number of posts to show:' ); ?></label>
 <input id="<?php echo $this->get_field_id( 'number' ); ?>" name="<?php echo $this->get_field_name( 'number' ); ?>" type="text" value="<?php echo $number; ?>" size="3" /></p>

 <p><input class="checkbox" type="checkbox" <?php checked( $show_date ); ?> id="<?php echo $this->get_field_id( 'show_date' ); ?>" name="<?php echo $this->get_field_name( 'show_date' ); ?>" />
 <label for="<?php echo $this->get_field_id( 'show_date' ); ?>"><?php _e( 'Display post date?' ); ?></label></p>
<?php
 }
}

// Register a New Widget for Recent Posts
function genesis_register_custom_widgets() {
 register_widget( 'Genesis_Widget_Recent_Posts' );
}
add_action( 'widgets_init', 'genesis_register_custom_widgets' );