WordPress/wp-content/themes/twentyeleven/inc/widgets.php

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<?php
/**
* Makes a custom Widget for displaying Aside, Link, Status, and Quote Posts available with Twenty Eleven
*
* Learn more: http://codex.wordpress.org/Widgets_API#Developing_Widgets
*
* @package WordPress
* @subpackage Twenty_Eleven
* @since Twenty Eleven 1.0
*/
class Twenty_Eleven_Ephemera_Widget extends WP_Widget {
/**
* Constructor
*
* @return void
**/
function Twenty_Eleven_Ephemera_Widget() {
$widget_ops = array( 'classname' => 'widget_twentyeleven_ephemera', 'description' => __( 'Use this widget to list your recent Aside, Status, Quote, and Link posts', 'twentyeleven' ) );
$this->WP_Widget( 'widget_twentyeleven_ephemera', __( 'Twenty Eleven Ephemera', 'twentyeleven' ), $widget_ops );
$this->alt_option_name = 'widget_twentyeleven_ephemera';
add_action( 'save_post', array(&$this, 'flush_widget_cache' ) );
add_action( 'deleted_post', array(&$this, 'flush_widget_cache' ) );
add_action( 'switch_theme', array(&$this, 'flush_widget_cache' ) );
}
/**
* Outputs the HTML for this widget.
*
* @param array An array of standard parameters for widgets in this theme
* @param array An array of settings for this widget instance
* @return void Echoes it's output
**/
function widget( $args, $instance ) {
$cache = wp_cache_get( 'widget_twentyeleven_ephemera', 'widget' );
if ( !is_array( $cache ) )
$cache = array();
if ( ! isset( $args['widget_id'] ) )
$args['widget_id'] = null;
if ( isset( $cache[$args['widget_id']] ) ) {
echo $cache[$args['widget_id']];
return;
}
ob_start();
extract( $args, EXTR_SKIP );
$title = apply_filters( 'widget_title', empty( $instance['title'] ) ? __( 'Ephemera', 'twentyeleven' ) : $instance['title'], $instance, $this->id_base);
if ( ! isset( $instance['number'] ) )
$instance['number'] = '10';
if ( ! $number = absint( $instance['number'] ) )
$number = 10;
$ephemera_args = array(
'order' => 'DESC',
'posts_per_page' => $number,
'no_found_rows' => true,
'post_status' => 'publish',
'post__not_in' => get_option( 'sticky_posts' ),
'tax_query' => array(
array(
'taxonomy' => 'post_format',
'terms' => array( 'post-format-aside', 'post-format-link', 'post-format-status', 'post-format-quote' ),
'field' => 'slug',
'operator' => 'IN',
),
),
);
$ephemera = new WP_Query( $ephemera_args );
if ( $ephemera->have_posts() ) :
echo $before_widget;
echo $before_title;
echo $title; // Can set this with a widget option, or omit altogether
echo $after_title;
?>
<ol>
<?php while ( $ephemera->have_posts() ) : $ephemera->the_post(); ?>
<?php if ( 'link' != get_post_format() ) : ?>
<li class="widget-entry-title">
<a href="<?php echo esc_url( get_permalink() ); ?>" title="<?php printf( esc_attr__( 'Permalink to %s', 'twentyeleven' ), the_title_attribute( 'echo=0' ) ); ?>" rel="bookmark"><?php the_title(); ?></a>
<span class="comments-link">
<?php comments_popup_link( __( '0 <span class="reply">comments &rarr;</span>', 'twentyeleven' ), __( '1 <span class="reply">comment &rarr;</span>', 'twentyeleven' ), __( '% <span class="reply">comments &rarr;</span>', 'twentyeleven' ) ); ?>
</span>
</li>
<?php else : ?>
<li class="widget-entry-title">
<?php
// Grab first link from the post content. If none found, use the post permalink as fallback.
$link_url = twentyeleven_url_grabber();
if ( empty( $link_url ) )
$link_url = get_permalink();
?>
<a href="<?php echo esc_url( $link_url ); ?>" title="<?php printf( esc_attr__( 'Link to %s', 'twentyeleven' ), the_title_attribute( 'echo=0' ) ); ?>" rel="bookmark"><?php the_title(); ?>&nbsp;<span>&rarr;</span></a>
<span class="comments-link">
<?php comments_popup_link( __( '0 <span class="reply">comments &rarr;</span>', 'twentyeleven' ), __( '1 <span class="reply">comment &rarr;</span>', 'twentyeleven' ), __( '% <span class="reply">comments &rarr;</span>', 'twentyeleven' ) ); ?>
</span>
</li>
<?php endif; ?>
<?php endwhile; ?>
</ol>
<?php
echo $after_widget;
// Reset the post globals as this query will have stomped on it
wp_reset_postdata();
// end check for ephemeral posts
endif;
$cache[$args['widget_id']] = ob_get_flush();
wp_cache_set( 'widget_twentyeleven_ephemera', $cache, 'widget' );
}
/**
* Deals with the settings when they are saved by the admin. Here is
* where any validation should be dealt with.
**/
function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$instance['title'] = strip_tags( $new_instance['title'] );
$instance['number'] = (int) $new_instance['number'];
$this->flush_widget_cache();
$alloptions = wp_cache_get( 'alloptions', 'options' );
if ( isset( $alloptions['widget_twentyeleven_ephemera'] ) )
delete_option( 'widget_twentyeleven_ephemera' );
return $instance;
}
function flush_widget_cache() {
wp_cache_delete( 'widget_twentyeleven_ephemera', 'widget' );
}
/**
* Displays the form for this widget on the Widgets page of the WP Admin area.
**/
function form( $instance ) {
$title = isset( $instance['title']) ? esc_attr( $instance['title'] ) : '';
$number = isset( $instance['number'] ) ? absint( $instance['number'] ) : 10;
?>
<p><label for="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>"><?php _e( 'Title:', 'twentyeleven' ); ?></label>
<input class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'title' ) ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>" /></p>
<p><label for="<?php echo esc_attr( $this->get_field_id( 'number' ) ); ?>"><?php _e( 'Number of posts to show:', 'twentyeleven' ); ?></label>
<input id="<?php echo esc_attr( $this->get_field_id( 'number' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'number' ) ); ?>" type="text" value="<?php echo esc_attr( $number ); ?>" size="3" /></p>
<?php
}
}