291 lines
8.4 KiB
PHP
291 lines
8.4 KiB
PHP
<?php
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class ComicPress {
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var $comicpress_options = array(
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'comic_category_id' => 1,
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'comic_dimensions' => '760x',
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'rss_dimensions' => '350x',
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'archive_dimensions' => '125x',
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'category_order' => false,
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'blogpost_count' => 10
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);
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var $additional_stylesheets = array();
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var $comic_post_attachments_cache = array();
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var $category_tree = array();
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/**
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* Load ComicPress options.
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*/
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function load() {
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$result = get_option('comicpress-options');
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if (is_array($result)) {
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$this->comicpress_options = array_merge($this->comicpress_options, $result);
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}
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}
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/**
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* Save ComicPress options.
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*/
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function save() {
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if (is_array($this->comicpress_options)) {
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update_option('comicpress-options', $this->comicpress_options);
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}
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}
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/**
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* Initialize the class.
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*/
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function init() {
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$this->load();
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$this->get_all_category_objects_by_id();
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$this->flatten_categories();
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$this->separate_categories();
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$this->sort_comic_categories();
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add_action('wp_head', array(&$this, 'wp_head'));
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}
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function wp_head() {
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foreach ($this->additional_stylesheets as $uri) { ?>
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<link rel="stylesheet" href="<?php echo get_template_directory_uri() . $uri ?>" type="text/css" />
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<?php }
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}
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/**
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* Flatten all WP categories into nodes like 0/3/5.
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*/
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function flatten_categories() {
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$this->category_tree = array();
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foreach (array_keys($this->categories_by_id) as $category_id) {
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$this->category_tree[] = $this->categories_by_id[$category_id]->parent . '/' . $category_id;
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}
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do {
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$all_ok = true;
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for ($i = 0; $i < count($this->category_tree); ++$i) {
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$current_parts = explode("/", $this->category_tree[$i]);
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if (reset($current_parts) != 0) {
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$all_ok = false;
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for ($j = 0; $j < count($this->category_tree); ++$j) {
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$j_parts = explode("/", $this->category_tree[$j]);
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if (end($j_parts) == reset($current_parts)) {
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$this->category_tree[$i] = implode("/", array_merge($j_parts, array_slice($current_parts, 1)));
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break;
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}
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}
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}
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}
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} while (!$all_ok);
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return $this->category_tree;
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}
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/**
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* Separate categories into comics and non-comics categories.
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*/
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function separate_categories() {
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$comic_categories = array();
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$non_comic_categories = array();
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foreach ($this->category_tree as $node) {
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$parts = split("/", $node);
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if ($parts[1] == $this->comicpress_options['comic_category_id']) {
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$comic_categories[] = $node;
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} else {
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$non_comic_categories[] = $node;
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}
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}
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$this->category_tree = $comic_categories;
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$this->non_comic_categories = $non_comic_categories;
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}
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/**
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* Sort the category tree, adding in new categories in the order as necessary.
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*/
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function sort_comic_categories() {
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if (is_array($this->comicpress_options['category_order'])) {
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$new_order = array();
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foreach ($this->comicpress_options['category_order'] as $node) {
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if (in_array($node, $this->category_tree)) {
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$new_order[] = $node;
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}
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}
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foreach ($this->category_tree as $node) {
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if (!in_array($node, $this->comicpress_options['category_order'])) {
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$new_order[] = $node;
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}
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}
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$this->category_tree = $new_order;;
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}
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return $this->category_tree;
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}
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/**
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* Turn the list of categories into a hash table of category objects.
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*/
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function get_all_category_objects_by_id() {
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if (empty($this->categories_by_id)) {
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$this->categories_by_id = array();
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foreach (get_categories("hide_empty=0") as $category_object) {
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$this->categories_by_id[$category_object->term_id] = $category_object;
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}
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}
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return $this->categories_by_id;
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}
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/**
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* Turn the tree of comics categories into a string to be fed into wp_query functions.
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*/
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function get_all_comic_categories_as_cat_string() {
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if (empty($this->all_comic_categories_as_string)) {
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$categories = array();
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foreach ($this->category_tree as $node) {
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$categories[] = end(explode("/", $node));
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}
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$this->all_comic_categories_as_string = implode(",", $categories);
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}
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return $this->all_comic_categories_as_string;
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}
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/**
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* Return true if the current post is in the comics category or a child category.
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*/
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function in_comic_category($post_id) {
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$categories = wp_get_post_categories($post_id);
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if (is_array($categories)) {
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foreach ($this->category_tree as $node) {
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if (in_array(end(explode("/", $node)), $categories)) {
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return true;
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}
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}
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}
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return false;
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}
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/**
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* Find the terminal post in a specific category.
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*/
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function get_terminal_post_in_category($category_id, $first = true) {
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$sort_order = $first ? "asc" : "desc";
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$terminal_comic_query =$this->_new_wp_query();
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$terminal_comic_query->query("showposts=1&order=${sort_order}&cat=${category_id}&status=publish");
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if ($terminal_comic_query->have_posts()) {
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return reset($terminal_comic_query->posts);
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}
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return false;
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}
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/**
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* Get the first comic in a category.
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*/
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function get_first_comic() {
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return $this->get_terminal_post_in_category($this->get_all_comic_categories_as_cat_string());
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}
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/**
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* Get the last comic in a category.
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*/
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function get_last_comic() {
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return $this->get_terminal_post_in_category($this->get_all_comic_categories_as_cat_string(), false);
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}
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/**
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* Get the comics necessary to build the navigation.
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*/
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function get_nav_comics() {
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global $post;
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$comic_posts = array();
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foreach (array('first', 'last', 'previous', 'next') as $which) {
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$comic_posts[$which] = $this->{"get_${which}_comic"}();
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}
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$comic_posts['show_first'] = ($comic_posts['first']->ID != $comic_posts['last']->ID);
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$comic_posts['show_previous'] = (!empty($comic_posts['previous']) && ($comic_posts['first']->ID != $comic_posts['previous']->ID));
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$comic_posts['show_next'] = (!empty($comic_posts['next']) && ($comic_posts['last']->ID != $comic_posts['next']->ID));
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$comic_posts['show_last'] = (trim($post->ID) != trim($comic_posts['last']->ID));
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return $comic_posts;
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}
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/**
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* Get the comic post adjacent to the current comic.
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*/
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function get_adjacent_comic($category, $next = false, $override_post = null) {
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global $wp_query, $post;
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$temp = $wp_query->is_single;
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$wp_query->is_single = true;
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if (!is_null($override_post)) {
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$temp_post = $post;
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$post = $override_post;
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}
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$categories_to_exclude = $this->get_leaves_of_tree($this->non_comic_categories);
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if (!is_null($category)) {
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$categories_to_exclude = $this->exclude_all_but_provided_categories($category);
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}
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$result = get_adjacent_post(false, implode(" and ", $categories_to_exclude), !$next);
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$wp_query->is_single = $temp;
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if (!is_null($override_post)) {
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$post = $temp_post;
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}
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return empty($result) ? false : $result;
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}
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/**
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* Given a category ID or an array of category IDs, create an exclusion string that will
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* filter out every category but the provided ones.
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*/
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function get_string_to_exclude_all_but_provided_categories($category) {
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return implode(",", $this->exclude_all_but_provided_categories($category));
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}
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/**
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* Exclude every category but the given one.
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*/
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function exclude_all_but_provided_categories($category) {
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$category_ids = array_keys($this->get_all_category_objects_by_id());
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if (!is_array($category)) { $category = array($category); }
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return array_diff($category_ids, $category);
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}
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/**
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* Gets the leaves of a ComicPress node tree (branches look like "0/4/5").
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*/
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function get_leaves_of_tree($tree) {
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$leaves = array();
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foreach ($tree as $branch) { $leaves[] = end(explode("/", $branch)); }
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return $leaves;
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}
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/**
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* Get a new WP_Query object.
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*/
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function _new_wp_query() {
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return new WP_Query();
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}
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/**
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* Get the previous comic from the current one.
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*/
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function get_previous_comic($category = null, $override_post = null) { return $this->get_adjacent_comic($category, false, $override_post); }
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/**
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* Get the next comic from the current one.
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*/
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function get_next_comic($category = null, $override_post = null) { return $this->get_adjacent_comic($category, true, $override_post); }
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}
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?>
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