263 lines
9.0 KiB
PHP
Executable File
263 lines
9.0 KiB
PHP
Executable File
<?php
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/*
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Plugin Name: Category Posts Widget
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Plugin URI: http://jameslao.com/2011/03/24/category-posts-widget-3-2/
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Description: Adds a widget that can display posts from a single category.
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Author: James Lao
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Version: 3.2
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Author URI: http://jameslao.com/
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*/
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// Register thumbnail sizes.
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if ( function_exists('add_image_size') )
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{
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$sizes = get_option('jlao_cat_post_thumb_sizes');
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if ( $sizes )
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{
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foreach ( $sizes as $id=>$size )
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add_image_size( 'cat_post_thumb_size' . $id, $size[0], $size[1], true );
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}
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}
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class CategoryPosts extends WP_Widget {
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function CategoryPosts() {
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parent::WP_Widget(false, $name='Category Posts');
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}
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/**
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* Displays category posts widget on blog.
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*/
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function widget($args, $instance) {
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global $post;
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$post_old = $post; // Save the post object.
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extract( $args );
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$sizes = get_option('jlao_cat_post_thumb_sizes');
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// If not title, use the name of the category.
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if( !$instance["title"] ) {
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$category_info = get_category($instance["cat"]);
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$instance["title"] = $category_info->name;
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}
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$valid_sort_orders = array('date', 'title', 'comment_count', 'random');
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if ( in_array($instance['sort_by'], $valid_sort_orders) ) {
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$sort_by = $instance['sort_by'];
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$sort_order = (bool) $instance['asc_sort_order'] ? 'ASC' : 'DESC';
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} else {
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// by default, display latest first
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$sort_by = 'date';
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$sort_order = 'DESC';
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}
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// Get array of post info.
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$cat_posts = new WP_Query(
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"showposts=" . $instance["num"] .
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"&cat=" . $instance["cat"] .
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"&orderby=" . $sort_by .
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"&order=" . $sort_order
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);
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// Excerpt length filter
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$new_excerpt_length = create_function('$length', "return " . $instance["excerpt_length"] . ";");
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if ( $instance["excerpt_length"] > 0 )
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add_filter('excerpt_length', $new_excerpt_length);
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echo $before_widget;
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// Widget title
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echo $before_title;
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if( $instance["title_link"] )
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echo '<a href="' . get_category_link($instance["cat"]) . '">' . $instance["title"] . '</a>';
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else
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echo $instance["title"];
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echo $after_title;
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// Post list
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echo "<ul>\n";
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while ( $cat_posts->have_posts() )
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{
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$cat_posts->the_post();
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?>
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<li class="cat-post-item">
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<a class="post-title" href="<?php the_permalink(); ?>" rel="bookmark" title="Permanent link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a>
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<?php
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if (
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function_exists('the_post_thumbnail') &&
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current_theme_supports("post-thumbnails") &&
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$instance["thumb"] &&
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has_post_thumbnail()
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) :
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?>
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<a href="<?php the_permalink(); ?>" title="<?php the_title_attribute(); ?>">
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<?php the_post_thumbnail( 'cat_post_thumb_size'.$this->id ); ?>
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</a>
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<?php endif; ?>
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<?php if ( $instance['date'] ) : ?>
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<p class="post-date"><?php the_time("j M Y"); ?></p>
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<?php endif; ?>
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<?php if ( $instance['excerpt'] ) : ?>
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<?php the_excerpt(); ?>
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<?php endif; ?>
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<?php if ( $instance['comment_num'] ) : ?>
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<p class="comment-num">(<?php comments_number(); ?>)</p>
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<?php endif; ?>
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</li>
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<?php
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}
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echo "</ul>\n";
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echo $after_widget;
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remove_filter('excerpt_length', $new_excerpt_length);
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$post = $post_old; // Restore the post object.
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}
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/**
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* Form processing... Dead simple.
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*/
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function update($new_instance, $old_instance) {
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/**
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* Save the thumbnail dimensions outside so we can
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* register the sizes easily. We have to do this
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* because the sizes must registered beforehand
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* in order for WP to hard crop images (this in
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* turn is because WP only hard crops on upload).
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* The code inside the widget is executed only when
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* the widget is shown so we register the sizes
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* outside of the widget class.
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*/
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if ( function_exists('the_post_thumbnail') )
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{
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$sizes = get_option('jlao_cat_post_thumb_sizes');
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if ( !$sizes ) $sizes = array();
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$sizes[$this->id] = array($new_instance['thumb_w'], $new_instance['thumb_h']);
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update_option('jlao_cat_post_thumb_sizes', $sizes);
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}
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return $new_instance;
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}
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/**
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* The configuration form.
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*/
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function form($instance) {
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?>
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<p>
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<label for="<?php echo $this->get_field_id("title"); ?>">
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<?php _e( 'Title' ); ?>:
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<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"]); ?>" />
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</label>
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</p>
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<p>
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<label>
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<?php _e( 'Category' ); ?>:
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<?php wp_dropdown_categories( array( 'name' => $this->get_field_name("cat"), 'selected' => $instance["cat"] ) ); ?>
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</label>
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</p>
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<p>
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<label for="<?php echo $this->get_field_id("num"); ?>">
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<?php _e('Number of posts to show'); ?>:
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<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' />
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</label>
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</p>
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<p>
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<label for="<?php echo $this->get_field_id("sort_by"); ?>">
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<?php _e('Sort by'); ?>:
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<select id="<?php echo $this->get_field_id("sort_by"); ?>" name="<?php echo $this->get_field_name("sort_by"); ?>">
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<option value="date"<?php selected( $instance["sort_by"], "date" ); ?>>Date</option>
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<option value="title"<?php selected( $instance["sort_by"], "title" ); ?>>Title</option>
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<option value="comment_count"<?php selected( $instance["sort_by"], "comment_count" ); ?>>Number of comments</option>
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<option value="random"<?php selected( $instance["sort_by"], "random" ); ?>>Random</option>
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</select>
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</label>
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</p>
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<p>
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<label for="<?php echo $this->get_field_id("asc_sort_order"); ?>">
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<input type="checkbox" class="checkbox"
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id="<?php echo $this->get_field_id("asc_sort_order"); ?>"
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name="<?php echo $this->get_field_name("asc_sort_order"); ?>"
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<?php checked( (bool) $instance["asc_sort_order"], true ); ?> />
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<?php _e( 'Reverse sort order (ascending)' ); ?>
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</label>
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</p>
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<p>
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<label for="<?php echo $this->get_field_id("title_link"); ?>">
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<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 ); ?> />
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<?php _e( 'Make widget title link' ); ?>
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</label>
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</p>
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<p>
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<label for="<?php echo $this->get_field_id("excerpt"); ?>">
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<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 ); ?> />
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<?php _e( 'Show post excerpt' ); ?>
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</label>
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</p>
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<p>
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<label for="<?php echo $this->get_field_id("excerpt_length"); ?>">
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<?php _e( 'Excerpt length (in words):' ); ?>
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</label>
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<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" />
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</p>
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<p>
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<label for="<?php echo $this->get_field_id("comment_num"); ?>">
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<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 ); ?> />
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<?php _e( 'Show number of comments' ); ?>
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</label>
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</p>
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<p>
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<label for="<?php echo $this->get_field_id("date"); ?>">
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<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 ); ?> />
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<?php _e( 'Show post date' ); ?>
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</label>
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</p>
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<?php if ( function_exists('the_post_thumbnail') && current_theme_supports("post-thumbnails") ) : ?>
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<p>
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<label for="<?php echo $this->get_field_id("thumb"); ?>">
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<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 ); ?> />
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<?php _e( 'Show post thumbnail' ); ?>
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</label>
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</p>
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<p>
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<label>
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<?php _e('Thumbnail dimensions'); ?>:<br />
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<label for="<?php echo $this->get_field_id("thumb_w"); ?>">
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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"]; ?>" />
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</label>
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<label for="<?php echo $this->get_field_id("thumb_h"); ?>">
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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"]; ?>" />
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</label>
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</label>
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</p>
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<?php endif; ?>
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<?php
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}
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}
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add_action( 'widgets_init', create_function('', 'return register_widget("CategoryPosts");') );
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?>
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