comicpress-theme-core/classes/ComicPress.inc

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