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1 <?php
2 /**
3  * Makes a custom Widget for displaying Aside, Link, Status, and Quote Posts available with Twenty Eleven
4  *
5  * Learn more: http://codex.wordpress.org/Widgets_API#Developing_Widgets
6  *
7  * @package WordPress
8  * @subpackage Twenty_Eleven
9  * @since Twenty Eleven 1.0
10  */
11 class Twenty_Eleven_Ephemera_Widget extends WP_Widget {
12
13         /**
14          * Constructor
15          *
16          * @return void
17          **/
18         function Twenty_Eleven_Ephemera_Widget() {
19                 $widget_ops = array( 'classname' => 'widget_twentyeleven_ephemera', 'description' => __( 'Use this widget to list your recent Aside, Status, Quote, and Link posts', 'twentyeleven' ) );
20                 $this->WP_Widget( 'widget_twentyeleven_ephemera', __( 'Twenty Eleven Ephemera', 'twentyeleven' ), $widget_ops );
21                 $this->alt_option_name = 'widget_twentyeleven_ephemera';
22
23                 add_action( 'save_post', array(&$this, 'flush_widget_cache' ) );
24                 add_action( 'deleted_post', array(&$this, 'flush_widget_cache' ) );
25                 add_action( 'switch_theme', array(&$this, 'flush_widget_cache' ) );
26         }
27
28         /**
29          * Outputs the HTML for this widget.
30          *
31          * @param array An array of standard parameters for widgets in this theme
32          * @param array An array of settings for this widget instance
33          * @return void Echoes it's output
34          **/
35         function widget( $args, $instance ) {
36                 $cache = wp_cache_get( 'widget_twentyeleven_ephemera', 'widget' );
37
38                 if ( !is_array( $cache ) )
39                         $cache = array();
40
41                 if ( ! isset( $args['widget_id'] ) )
42                         $args['widget_id'] = null;
43
44                 if ( isset( $cache[$args['widget_id']] ) ) {
45                         echo $cache[$args['widget_id']];
46                         return;
47                 }
48
49                 ob_start();
50                 extract( $args, EXTR_SKIP );
51
52                 $title = apply_filters( 'widget_title', empty( $instance['title'] ) ? __( 'Ephemera', 'twentyeleven' ) : $instance['title'], $instance, $this->id_base);
53
54                 if ( ! isset( $instance['number'] ) )
55                         $instance['number'] = '10';
56
57                 if ( ! $number = absint( $instance['number'] ) )
58                         $number = 10;
59
60                 $ephemera_args = array(
61                         'order' => 'DESC',
62                         'posts_per_page' => $number,
63                         'no_found_rows' => true,
64                         'post_status' => 'publish',
65                         'post__not_in' => get_option( 'sticky_posts' ),
66                         'tax_query' => array(
67                                 array(
68                                         'taxonomy' => 'post_format',
69                                         'terms' => array( 'post-format-aside', 'post-format-link', 'post-format-status', 'post-format-quote' ),
70                                         'field' => 'slug',
71                                         'operator' => 'IN',
72                                 ),
73                         ),
74                 );
75                 $ephemera = new WP_Query( $ephemera_args );
76
77                 if ( $ephemera->have_posts() ) :
78
79                 echo $before_widget;
80                 echo $before_title;
81                 echo $title; // Can set this with a widget option, or omit altogether
82                 echo $after_title;
83
84                 ?>
85                 <ol>
86                 <?php while ( $ephemera->have_posts() ) : $ephemera->the_post(); ?>
87
88                         <?php if ( 'link' != get_post_format() ) : ?>
89
90                         <li class="widget-entry-title">
91                                 <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>
92                                 <span class="comments-link">
93                                         <?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' ) ); ?>
94                                 </span>
95                         </li>
96
97                         <?php else : ?>
98
99                         <li class="widget-entry-title">
100                                 <?php
101                                         // Grab first link from the post content. If none found, use the post permalink as fallback.
102                                         $link_url = twentyeleven_url_grabber();
103
104                                         if ( empty( $link_url ) )
105                                                 $link_url = get_permalink();
106                                 ?>
107                                 <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>
108                                 <span class="comments-link">
109                                         <?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' ) ); ?>
110                                 </span>
111                         </li>
112
113                         <?php endif; ?>
114
115                 <?php endwhile; ?>
116                 </ol>
117                 <?php
118
119                 echo $after_widget;
120
121                 // Reset the post globals as this query will have stomped on it
122                 wp_reset_postdata();
123
124                 // end check for ephemeral posts
125                 endif;
126
127                 $cache[$args['widget_id']] = ob_get_flush();
128                 wp_cache_set( 'widget_twentyeleven_ephemera', $cache, 'widget' );
129         }
130
131         /**
132          * Deals with the settings when they are saved by the admin. Here is
133          * where any validation should be dealt with.
134          **/
135         function update( $new_instance, $old_instance ) {
136                 $instance = $old_instance;
137                 $instance['title'] = strip_tags( $new_instance['title'] );
138                 $instance['number'] = (int) $new_instance['number'];
139                 $this->flush_widget_cache();
140
141                 $alloptions = wp_cache_get( 'alloptions', 'options' );
142                 if ( isset( $alloptions['widget_twentyeleven_ephemera'] ) )
143                         delete_option( 'widget_twentyeleven_ephemera' );
144
145                 return $instance;
146         }
147
148         function flush_widget_cache() {
149                 wp_cache_delete( 'widget_twentyeleven_ephemera', 'widget' );
150         }
151
152         /**
153          * Displays the form for this widget on the Widgets page of the WP Admin area.
154          **/
155         function form( $instance ) {
156                 $title = isset( $instance['title']) ? esc_attr( $instance['title'] ) : '';
157                 $number = isset( $instance['number'] ) ? absint( $instance['number'] ) : 10;
158 ?>
159                         <p><label for="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>"><?php _e( 'Title:', 'twentyeleven' ); ?></label>
160                         <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>
161
162                         <p><label for="<?php echo esc_attr( $this->get_field_id( 'number' ) ); ?>"><?php _e( 'Number of posts to show:', 'twentyeleven' ); ?></label>
163                         <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>
164                 <?php
165         }
166 }