comicpress-2.8/classes/ComicPressStoryline.inc

119 lines
3.1 KiB
PHP

<?php
require_once('ComicPressDBInterface.inc');
class ComicPressStoryline {
var $_structure, $root_category;
/**
* Create a searchable structure from a node list.
* @param array $structure The structure to process.
* @return boolean True if the structure was valid.
*/
function create_structure($structure) {
$new_structure = array();
$parent = null;
$all_leaves = array();
$this->root_category = false;
$adjacents_by_parent = array();
if (is_array($structure)) {
$is_valid = true;
foreach ($structure as $branch) {
if (is_string($branch)) {
$parts = explode('/', $branch);
$valid = false;
if (count($parts) > 1) {
if ($parts[0] == '0') { $valid = true; }
}
if (!$valid) {
$is_valid = false; break;
} else {
$data = array();
$leaf = end($parts);
$all_leaves[] = $leaf;
if (count($parts) > 2) {
$parent = $parts[count($parts) - 2];
if (!isset($adjacents_by_parent[$parent])) {
$adjacents_by_parent[$parent] = array();
}
$adjacents_by_parent[$parent][] = $leaf;
$data['parent'] = $parent;
} else {
$this->root_category = $leaf;
}
$new_structure[$leaf] = $data;
}
} else {
$is_valid = false; break;
}
}
if ($is_valid) {
for ($i = 0; $i < count($all_leaves); ++$i) {
foreach (array('previous' => -1, 'next' => 1) as $type => $dir) {
if (isset($all_leaves[$i + $dir])) {
$new_structure[$all_leaves[$i]][$type] = $all_leaves[$i + $dir];
}
}
}
$this->_structure = $new_structure;
}
}
return is_array($this->_structure);
}
function _get_field($field, $id) {
if (isset($this->_structure)) {
if (isset($this->_structure[$id])) {
if (isset($this->_structure[$id][$field])) {
return $this->_structure[$id][$field];
}
}
}
return false;
}
function parent($id) { return $this->_get_field('parent', $id); }
function previous($id) { return $this->_get_field('previous', $id); }
function next($id) { return $this->_get_field('next', $id); }
function valid($id) {
if (isset($this->_structure[$id])) {
return array_keys($this->_structure[$id]);
}
return false;
}
/**
* Get the valid navigation directions for a particular post.
*/
function get_valid_nav($post_id) {
if (($category = $this->get_valid_post_category($post_id)) !== false) {
return $this->valid($category);
}
return false;
}
/**
* Get the valid comic category for this post.
*/
function get_valid_post_category($post_id) {
$result = false;
foreach (wp_get_post_categories($post_id) as $category) {
if ($this->valid($category)) {
if ($result) { return false; }
$result = $category;
}
}
return $result;
}
}
?>