112 lines
3.0 KiB
PHP
112 lines
3.0 KiB
PHP
<?php
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class ComicPressDBInterface {
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var $_non_comic_categories = array(), $_all_categories = array();
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function ComicPressDBInterface() {}
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function get_instance() {
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static $instance;
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if (!isset($instance)) { $instance = new ComicPressDBInterface(); }
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return $instance;
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}
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function _get_categories() { return get_categories("hide_empty=0"); }
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/**
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* Set the comic categories for the current run of ComicPress.
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*/
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function set_comic_categories($categories) {
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$this->_all_categories = get_all_category_ids();
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$this->_non_comic_categories = array_values(array_diff($this->_all_categories, $categories));
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}
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function _get_categories_to_exclude($category = null) {
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$result = array_diff($this->_all_categories, array($category));
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if (is_array($result)) {
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return (is_null($category)) ? $this->_non_comic_categories : array_values($result);
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} else {
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return $this->_non_comic_categories;
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}
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}
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/**
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* Find the terminal post in a specific category.
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*/
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function get_terminal_post_in_category($category_id, $first = true) {
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$this->_prepare_wp_query();
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$sort_order = $first ? "asc" : "desc";
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$terminal_comic_query = new WP_Query();
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$terminal_comic_query->query("showposts=1&order=${sort_order}&cat=${category_id}&status=publish");
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$post = false;
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if ($terminal_comic_query->have_posts()) {
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$post = reset($terminal_comic_query->posts);
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}
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$this->_reset_wp_query();
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return $post;
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}
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/**
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* Get the first comic in a category.
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*/
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function get_first_comic($category_id) {
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return $this->get_terminal_post_in_category($category_id);
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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($category_id) {
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return $this->get_terminal_post_in_category($category_id, false);
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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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* Wrapper around get_adjacent_post(). Don't unit test this method.
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*/
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function get_adjacent_comic($category, $next = false, $override_post = null) {
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global $post;
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$this->_prepare_wp_query();
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if (!is_null($override_post)) { $temp_post = $post; $post = $override_post; }
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$result = get_adjacent_post(false, implode(" and ", $this->_get_categories_to_exclude($category)), !$next);
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$this->_reset_wp_query();
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if (!is_null($override_post)) { $post = $temp_post; }
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return empty($result) ? false : $result;
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}
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function _prepare_wp_query() {
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global $wp_query;
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$this->is_single = $wp_query->is_single;
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$this->in_the_loop = $wp_query->in_the_loop;
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$wp_query->is_single = $wp_query->in_the_loop = true;
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}
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function _reset_wp_query() {
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global $wp_query;
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$wp_query->is_single = $this->is_single;
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$wp_query->in_the_loop = $this->in_the_loop;
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}
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/**
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* Get the previous comic from the current one.
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*/
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function get_previous_comic($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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