category-posts / cat-posts.php

cat-posts.php in Category Posts Block 3.1, at cat-posts.php

226 lines 7.5 KB

Raw Download Zip

1	<?php
2	/*
3	Plugin Name: Category Posts Widget
4	Plugin URI: http://jameslao.com/2009/12/30/category-posts-widget-3-0/
5	Description: Adds a widget that can display posts from a single category.
6	Author: James Lao
7	Version: 3.1
8	Author URI: http://jameslao.com/
9	*/
10
11	// Register thumbnail sizes.
12	if ( function_exists('add_image_size') )
13	{
14	$sizes = get_option('jlao_cat_post_thumb_sizes');
15	if ( $sizes )
16	{
17	foreach ( $sizes as $id=>$size )
18	add_image_size( 'cat_post_thumb_size' . $id, $size[0], $size[1], true );
19	}
20	}
21
22	class CategoryPosts extends WP_Widget {
23
24	function CategoryPosts() {
25	parent::WP_Widget(false, $name='Category Posts');
26	}
27
28	/**
29	* Displays category posts widget on blog.
30	*/
31	function widget($args, $instance) {
32	global $post;
33	$post_old = $post; // Save the post object.
34
35	extract( $args );
36
37	$sizes = get_option('jlao_cat_post_thumb_sizes');
38
39	// If not title, use the name of the category.
40	if( !$instance["title"] ) {
41	$category_info = get_category($instance["cat"]);
42	$instance["title"] = $category_info->name;
43	}
44
45	// Get array of post info.
46	$cat_posts = new WP_Query("showposts=" . $instance["num"] . "&cat=" . $instance["cat"]);
47
48	// Excerpt length filter
49	$new_excerpt_length = create_function('$length', "return " . $instance["excerpt_length"] . ";");
50	if ( $instance["excerpt_length"] > 0 )
51	add_filter('excerpt_length', $new_excerpt_length);
52
53	echo $before_widget;
54
55	// Widget title
56	echo $before_title;
57	if( $instance["title_link"] )
58	echo '<a href="' . get_category_link($instance["cat"]) . '">' . $instance["title"] . '</a>';
59	else
60	echo $instance["title"];
61	echo $after_title;
62
63	// Post list
64	echo "<ul>\n";
65
66	while ( $cat_posts->have_posts() )
67	{
68	$cat_posts->the_post();
69	?>
70	<li class="cat-post-item">
71	<a class="post-title" href="<?php the_permalink(); ?>" rel="bookmark" title="Permanent link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a>
72
73	<?php
74	if (
75	function_exists('the_post_thumbnail') &&
76	current_theme_supports("post-thumbnails") &&
77	$instance["thumb"] &&
78	has_post_thumbnail()
79	) :
80	?>
81	<a href="<?php the_permalink(); ?>" title="<?php the_title_attribute(); ?>">
82	<?php the_post_thumbnail( 'cat_post_thumb_size'.$this->id ); ?>
83	</a>
84	<?php endif; ?>
85
86	<?php if ( $instance['date'] ) : ?>
87	<p class="post-date"><?php the_time("j M Y"); ?></p>
88	<?php endif; ?>
89
90	<?php if ( $instance['excerpt'] ) : ?>
91	<?php the_excerpt(); ?>
92	<?php endif; ?>
93
94	<?php if ( $instance['comment_num'] ) : ?>
95	<p class="comment-num">(<?php comments_number(); ?>)</p>
96	<?php endif; ?>
97	</li>
98	<?php
99	}
100
101	echo "</ul>\n";
102
103	echo $after_widget;
104
105	remove_filter('excerpt_length', $new_excerpt_length);
106
107	$post = $post_old; // Restore the post object.
108	}
109
110	/**
111	* Form processing... Dead simple.
112	*/
113	function update($new_instance, $old_instance) {
114	/**
115	* Save the thumbnail dimensions outside so we can
116	* register the sizes easily. We have to do this
117	* because the sizes must registered beforehand
118	* in order for WP to hard crop images (this in
119	* turn is because WP only hard crops on upload).
120	* The code inside the widget is executed only when
121	* the widget is shown so we register the sizes
122	* outside of the widget class.
123	*/
124	if ( function_exists('the_post_thumbnail') )
125	{
126	$sizes = get_option('jlao_cat_post_thumb_sizes');
127	if ( !$sizes ) $sizes = array();
128	$sizes[$this->id] = array($new_instance['thumb_w'], $new_instance['thumb_h']);
129	update_option('jlao_cat_post_thumb_sizes', $sizes);
130	}
131
132	return $new_instance;
133	}
134
135	/**
136	* The configuration form.
137	*/
138	function form($instance) {
139	?>
140	<p>
141	<label for="<?php echo $this->get_field_id("title"); ?>">
142	<?php _e( 'Title' ); ?>:
143	<input class="widefat" id="<?php echo $this->get_field_id("title"); ?>" name="<?php echo $this->get_field_name("title"); ?>" type="text" value="<?php echo esc_attr($instance["title"]); ?>" />
144	</label>
145	</p>
146
147	<p>
148	<label>
149	<?php _e( 'Category' ); ?>:
150	<?php wp_dropdown_categories( array( 'name' => $this->get_field_name("cat"), 'selected' => $instance["cat"] ) ); ?>
151	</label>
152	</p>
153
154	<p>
155	<label for="<?php echo $this->get_field_id("num"); ?>">
156	<?php _e('Number of posts to show'); ?>:
157	<input style="text-align: center;" id="<?php echo $this->get_field_id("num"); ?>" name="<?php echo $this->get_field_name("num"); ?>" type="text" value="<?php echo absint($instance["num"]); ?>" size='3' />
158	</label>
159	</p>
160
161	<p>
162	<label for="<?php echo $this->get_field_id("title_link"); ?>">
163	<input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id("title_link"); ?>" name="<?php echo $this->get_field_name("title_link"); ?>"<?php checked( (bool) $instance["title_link"], true ); ?> />
164	<?php _e( 'Make widget title link' ); ?>
165	</label>
166	</p>
167
168	<p>
169	<label for="<?php echo $this->get_field_id("excerpt"); ?>">
170	<input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id("excerpt"); ?>" name="<?php echo $this->get_field_name("excerpt"); ?>"<?php checked( (bool) $instance["excerpt"], true ); ?> />
171	<?php _e( 'Show post excerpt' ); ?>
172	</label>
173	</p>
174
175	<p>
176	<label for="<?php echo $this->get_field_id("excerpt_length"); ?>">
177	<?php _e( 'Excerpt length (in words):' ); ?>
178	</label>
179	<input style="text-align: center;" type="text" id="<?php echo $this->get_field_id("excerpt_length"); ?>" name="<?php echo $this->get_field_name("excerpt_length"); ?>" value="<?php echo $instance["excerpt_length"]; ?>" size="3" />
180	</p>
181
182	<p>
183	<label for="<?php echo $this->get_field_id("comment_num"); ?>">
184	<input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id("comment_num"); ?>" name="<?php echo $this->get_field_name("comment_num"); ?>"<?php checked( (bool) $instance["comment_num"], true ); ?> />
185	<?php _e( 'Show number of comments' ); ?>
186	</label>
187	</p>
188
189	<p>
190	<label for="<?php echo $this->get_field_id("date"); ?>">
191	<input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id("date"); ?>" name="<?php echo $this->get_field_name("date"); ?>"<?php checked( (bool) $instance["date"], true ); ?> />
192	<?php _e( 'Show post date' ); ?>
193	</label>
194	</p>
195
196	<?php if ( function_exists('the_post_thumbnail') && current_theme_supports("post-thumbnails") ) : ?>
197	<p>
198	<label for="<?php echo $this->get_field_id("thumb"); ?>">
199	<input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id("thumb"); ?>" name="<?php echo $this->get_field_name("thumb"); ?>"<?php checked( (bool) $instance["thumb"], true ); ?> />
200	<?php _e( 'Show post thumbnail' ); ?>
201	</label>
202	</p>
203	<p>
204	<label>
205	<?php _e('Thumbnail dimensions'); ?>:<br />
206	<label for="<?php echo $this->get_field_id("thumb_w"); ?>">
207	W: <input class="widefat" style="width:40%;" type="text" id="<?php echo $this->get_field_id("thumb_w"); ?>" name="<?php echo $this->get_field_name("thumb_w"); ?>" value="<?php echo $instance["thumb_w"]; ?>" />
208	</label>
209
210	<label for="<?php echo $this->get_field_id("thumb_h"); ?>">
211	H: <input class="widefat" style="width:40%;" type="text" id="<?php echo $this->get_field_id("thumb_h"); ?>" name="<?php echo $this->get_field_name("thumb_h"); ?>" value="<?php echo $instance["thumb_h"]; ?>" />
212	</label>
213	</label>
214	</p>
215	<?php endif; ?>
216
217	<?php
218
219	}
220
221	}
222
223	add_action( 'widgets_init', create_function('', 'return register_widget("CategoryPosts");') );
224
225	?>
226