1808 lines
51 KiB
PHP
1808 lines
51 KiB
PHP
<?php
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/**
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* Holds Most of the WordPress classes.
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*
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* Some of the other classes are contained in other files. For example, the
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* WordPress cache is in cache.php and the WordPress roles API is in
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* capabilities.php. The third party libraries are contained in their own
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* separate files.
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*
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* @package WordPress
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*/
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/**
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* WordPress environment setup class.
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*
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* @package WordPress
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* @since 2.0.0
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*/
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class WP {
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/**
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* Public query variables.
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*
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* Long list of public query variables.
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*
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* @since 2.0.0
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* @access public
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* @var array
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*/
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var $public_query_vars = array('m', 'p', 'posts', 'w', 'cat', 'withcomments', 'withoutcomments', 's', 'search', 'exact', 'sentence', 'debug', 'calendar', 'page', 'paged', 'more', 'tb', 'pb', 'author', 'order', 'orderby', 'year', 'monthnum', 'day', 'hour', 'minute', 'second', 'name', 'category_name', 'tag', 'feed', 'author_name', 'static', 'pagename', 'page_id', 'error', 'comments_popup', 'attachment', 'attachment_id', 'subpost', 'subpost_id', 'preview', 'robots', 'taxonomy', 'term', 'cpage');
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/**
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* Private query variables.
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*
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* Long list of private query variables.
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*
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* @since 2.0.0
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* @var array
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*/
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var $private_query_vars = array('offset', 'posts_per_page', 'posts_per_archive_page', 'what_to_show', 'showposts', 'nopaging', 'post_type', 'post_status', 'category__in', 'category__not_in', 'category__and', 'tag__in', 'tag__not_in', 'tag__and', 'tag_slug__in', 'tag_slug__and', 'tag_id', 'post_mime_type', 'perm', 'comments_per_page');
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/**
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* Extra query variables set by the user.
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*
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* @since 2.1.0
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* @var array
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*/
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var $extra_query_vars = array();
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/**
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* Query variables for setting up the WordPress Query Loop.
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*
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* @since 2.0.0
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* @var array
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*/
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var $query_vars;
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/**
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* String parsed to set the query variables.
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*
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* @since 2.0.0
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* @var string
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*/
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var $query_string;
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/**
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* Permalink or requested URI.
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*
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* @since 2.0.0
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* @var string
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*/
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var $request;
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/**
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* Rewrite rule the request matched.
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*
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* @since 2.0.0
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* @var string
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*/
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var $matched_rule;
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/**
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* Rewrite query the request matched.
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*
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* @since 2.0.0
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* @var string
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*/
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var $matched_query;
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/**
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* Whether already did the permalink.
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*
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* @since 2.0.0
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* @var bool
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*/
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var $did_permalink = false;
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/**
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* Add name to list of public query variables.
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*
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* @since 2.1.0
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*
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* @param string $qv Query variable name.
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*/
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function add_query_var($qv) {
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if ( !in_array($qv, $this->public_query_vars) )
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$this->public_query_vars[] = $qv;
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}
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/**
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* Set the value of a query variable.
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*
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* @since 2.3.0
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*
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* @param string $key Query variable name.
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* @param mixed $value Query variable value.
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*/
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function set_query_var($key, $value) {
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$this->query_vars[$key] = $value;
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}
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/**
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* Parse request to find correct WordPress query.
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*
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* Sets up the query variables based on the request. There are also many
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* filters and actions that can be used to further manipulate the result.
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*
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* @since 2.0.0
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*
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* @param array|string $extra_query_vars Set the extra query variables.
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*/
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function parse_request($extra_query_vars = '') {
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global $wp_rewrite;
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$this->query_vars = array();
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$taxonomy_query_vars = array();
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if ( is_array($extra_query_vars) )
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$this->extra_query_vars = & $extra_query_vars;
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else if (! empty($extra_query_vars))
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parse_str($extra_query_vars, $this->extra_query_vars);
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// Process PATH_INFO, REQUEST_URI, and 404 for permalinks.
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// Fetch the rewrite rules.
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$rewrite = $wp_rewrite->wp_rewrite_rules();
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if (! empty($rewrite)) {
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// If we match a rewrite rule, this will be cleared.
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$error = '404';
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$this->did_permalink = true;
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if ( isset($_SERVER['PATH_INFO']) )
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$pathinfo = $_SERVER['PATH_INFO'];
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else
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$pathinfo = '';
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$pathinfo_array = explode('?', $pathinfo);
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$pathinfo = str_replace("%", "%25", $pathinfo_array[0]);
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$req_uri = $_SERVER['REQUEST_URI'];
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$req_uri_array = explode('?', $req_uri);
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$req_uri = $req_uri_array[0];
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$self = $_SERVER['PHP_SELF'];
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$home_path = parse_url(get_option('home'));
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if ( isset($home_path['path']) )
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$home_path = $home_path['path'];
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else
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$home_path = '';
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$home_path = trim($home_path, '/');
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// Trim path info from the end and the leading home path from the
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// front. For path info requests, this leaves us with the requesting
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// filename, if any. For 404 requests, this leaves us with the
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// requested permalink.
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$req_uri = str_replace($pathinfo, '', rawurldecode($req_uri));
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$req_uri = trim($req_uri, '/');
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$req_uri = preg_replace("|^$home_path|", '', $req_uri);
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$req_uri = trim($req_uri, '/');
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$pathinfo = trim($pathinfo, '/');
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$pathinfo = preg_replace("|^$home_path|", '', $pathinfo);
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$pathinfo = trim($pathinfo, '/');
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$self = trim($self, '/');
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$self = preg_replace("|^$home_path|", '', $self);
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$self = trim($self, '/');
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// The requested permalink is in $pathinfo for path info requests and
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// $req_uri for other requests.
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if ( ! empty($pathinfo) && !preg_match('|^.*' . $wp_rewrite->index . '$|', $pathinfo) ) {
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$request = $pathinfo;
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} else {
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// If the request uri is the index, blank it out so that we don't try to match it against a rule.
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if ( $req_uri == $wp_rewrite->index )
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$req_uri = '';
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$request = $req_uri;
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}
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$this->request = $request;
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// Look for matches.
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$request_match = $request;
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foreach ( (array) $rewrite as $match => $query) {
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// Don't try to match against AtomPub calls
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if ( $req_uri == 'wp-app.php' )
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break;
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// If the requesting file is the anchor of the match, prepend it
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// to the path info.
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if ((! empty($req_uri)) && (strpos($match, $req_uri) === 0) && ($req_uri != $request)) {
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$request_match = $req_uri . '/' . $request;
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}
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if (preg_match("#^$match#", $request_match, $matches) ||
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preg_match("#^$match#", urldecode($request_match), $matches)) {
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// Got a match.
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$this->matched_rule = $match;
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// Trim the query of everything up to the '?'.
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$query = preg_replace("!^.+\?!", '', $query);
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// Substitute the substring matches into the query.
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eval("@\$query = \"" . addslashes($query) . "\";");
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$this->matched_query = $query;
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// Parse the query.
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parse_str($query, $perma_query_vars);
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// If we're processing a 404 request, clear the error var
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// since we found something.
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if (isset($_GET['error']))
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unset($_GET['error']);
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if (isset($error))
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unset($error);
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break;
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}
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}
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// If req_uri is empty or if it is a request for ourself, unset error.
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if (empty($request) || $req_uri == $self || strpos($_SERVER['PHP_SELF'], 'wp-admin/') !== false) {
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if (isset($_GET['error']))
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unset($_GET['error']);
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if (isset($error))
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unset($error);
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if (isset($perma_query_vars) && strpos($_SERVER['PHP_SELF'], 'wp-admin/') !== false)
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unset($perma_query_vars);
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$this->did_permalink = false;
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}
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}
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$this->public_query_vars = apply_filters('query_vars', $this->public_query_vars);
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foreach ( $GLOBALS['wp_taxonomies'] as $taxonomy => $t )
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if ( isset($t->query_var) )
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$taxonomy_query_vars[$t->query_var] = $taxonomy;
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for ($i=0; $i<count($this->public_query_vars); $i += 1) {
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$wpvar = $this->public_query_vars[$i];
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if (isset($this->extra_query_vars[$wpvar]))
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$this->query_vars[$wpvar] = $this->extra_query_vars[$wpvar];
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elseif (isset($GLOBALS[$wpvar]))
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$this->query_vars[$wpvar] = $GLOBALS[$wpvar];
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elseif (!empty($_POST[$wpvar]))
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$this->query_vars[$wpvar] = $_POST[$wpvar];
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elseif (!empty($_GET[$wpvar]))
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$this->query_vars[$wpvar] = $_GET[$wpvar];
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elseif (!empty($perma_query_vars[$wpvar]))
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$this->query_vars[$wpvar] = $perma_query_vars[$wpvar];
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if ( !empty( $this->query_vars[$wpvar] ) ) {
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$this->query_vars[$wpvar] = (string) $this->query_vars[$wpvar];
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if ( in_array( $wpvar, $taxonomy_query_vars ) ) {
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$this->query_vars['taxonomy'] = $taxonomy_query_vars[$wpvar];
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$this->query_vars['term'] = $this->query_vars[$wpvar];
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}
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}
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}
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foreach ( (array) $this->private_query_vars as $var) {
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if (isset($this->extra_query_vars[$var]))
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$this->query_vars[$var] = $this->extra_query_vars[$var];
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elseif (isset($GLOBALS[$var]) && '' != $GLOBALS[$var])
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$this->query_vars[$var] = $GLOBALS[$var];
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}
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if ( isset($error) )
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$this->query_vars['error'] = $error;
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$this->query_vars = apply_filters('request', $this->query_vars);
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do_action_ref_array('parse_request', array(&$this));
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}
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/**
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* Send additional HTTP headers for caching, content type, etc.
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*
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* Sets the X-Pingback header, 404 status (if 404), Content-type. If showing
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* a feed, it will also send last-modified, etag, and 304 status if needed.
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*
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* @since 2.0.0
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*/
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function send_headers() {
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$headers = array('X-Pingback' => get_bloginfo('pingback_url'));
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$status = null;
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$exit_required = false;
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if ( is_user_logged_in() )
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$headers = array_merge($headers, wp_get_nocache_headers());
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if ( !empty($this->query_vars['error']) && '404' == $this->query_vars['error'] ) {
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$status = 404;
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if ( !is_user_logged_in() )
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$headers = array_merge($headers, wp_get_nocache_headers());
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$headers['Content-Type'] = get_option('html_type') . '; charset=' . get_option('blog_charset');
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} else if ( empty($this->query_vars['feed']) ) {
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$headers['Content-Type'] = get_option('html_type') . '; charset=' . get_option('blog_charset');
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} else {
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// We're showing a feed, so WP is indeed the only thing that last changed
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if ( !empty($this->query_vars['withcomments'])
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|| ( empty($this->query_vars['withoutcomments'])
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&& ( !empty($this->query_vars['p'])
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|| !empty($this->query_vars['name'])
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|| !empty($this->query_vars['page_id'])
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|| !empty($this->query_vars['pagename'])
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|| !empty($this->query_vars['attachment'])
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|| !empty($this->query_vars['attachment_id'])
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)
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)
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)
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$wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastcommentmodified('GMT'), 0).' GMT';
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else
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$wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastpostmodified('GMT'), 0).' GMT';
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$wp_etag = '"' . md5($wp_last_modified) . '"';
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$headers['Last-Modified'] = $wp_last_modified;
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$headers['ETag'] = $wp_etag;
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// Support for Conditional GET
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if (isset($_SERVER['HTTP_IF_NONE_MATCH']))
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$client_etag = stripslashes(stripslashes($_SERVER['HTTP_IF_NONE_MATCH']));
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else $client_etag = false;
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$client_last_modified = empty($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? '' : trim($_SERVER['HTTP_IF_MODIFIED_SINCE']);
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// If string is empty, return 0. If not, attempt to parse into a timestamp
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$client_modified_timestamp = $client_last_modified ? strtotime($client_last_modified) : 0;
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// Make a timestamp for our most recent modification...
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$wp_modified_timestamp = strtotime($wp_last_modified);
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if ( ($client_last_modified && $client_etag) ?
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(($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) :
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(($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
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$status = 304;
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$exit_required = true;
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}
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}
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$headers = apply_filters('wp_headers', $headers, $this);
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if ( ! empty( $status ) )
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status_header( $status );
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foreach( (array) $headers as $name => $field_value )
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@header("{$name}: {$field_value}");
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if ($exit_required)
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exit();
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do_action_ref_array('send_headers', array(&$this));
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}
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/**
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* Sets the query string property based off of the query variable property.
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*
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* The 'query_string' filter is deprecated, but still works. Plugins should
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* use the 'request' filter instead.
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*
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* @since 2.0.0
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*/
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function build_query_string() {
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$this->query_string = '';
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foreach ( (array) array_keys($this->query_vars) as $wpvar) {
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if ( '' != $this->query_vars[$wpvar] ) {
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$this->query_string .= (strlen($this->query_string) < 1) ? '' : '&';
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if ( !is_scalar($this->query_vars[$wpvar]) ) // Discard non-scalars.
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continue;
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$this->query_string .= $wpvar . '=' . rawurlencode($this->query_vars[$wpvar]);
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}
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}
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// query_string filter deprecated. Use request filter instead.
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if ( has_filter('query_string') ) { // Don't bother filtering and parsing if no plugins are hooked in.
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$this->query_string = apply_filters('query_string', $this->query_string);
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parse_str($this->query_string, $this->query_vars);
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}
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}
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/**
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* Setup the WordPress Globals.
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*
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* The query_vars property will be extracted to the GLOBALS. So care should
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* be taken when naming global variables that might interfere with the
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* WordPress environment.
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*
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* @global string $query_string Query string for the loop.
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* @global int $more Only set, if single page or post.
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* @global int $single If single page or post. Only set, if single page or post.
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*
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* @since 2.0.0
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*/
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function register_globals() {
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global $wp_query;
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// Extract updated query vars back into global namespace.
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foreach ( (array) $wp_query->query_vars as $key => $value) {
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$GLOBALS[$key] = $value;
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}
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$GLOBALS['query_string'] = & $this->query_string;
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$GLOBALS['posts'] = & $wp_query->posts;
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$GLOBALS['post'] = & $wp_query->post;
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$GLOBALS['request'] = & $wp_query->request;
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if ( is_single() || is_page() ) {
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$GLOBALS['more'] = 1;
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$GLOBALS['single'] = 1;
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}
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}
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/**
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* Setup the current user.
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*
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* @since 2.0.0
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*/
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function init() {
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wp_get_current_user();
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}
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/**
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* Setup the Loop based on the query variables.
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*
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* @uses WP::$query_vars
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* @since 2.0.0
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*/
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function query_posts() {
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global $wp_the_query;
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$this->build_query_string();
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$wp_the_query->query($this->query_vars);
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}
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/**
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* Set the Headers for 404, if permalink is not found.
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*
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* Issue a 404 if a permalink request doesn't match any posts. Don't issue
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* a 404 if one was already issued, if the request was a search, or if the
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* request was a regular query string request rather than a permalink
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* request. Issues a 200, if not 404.
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*
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* @since 2.0.0
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*/
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function handle_404() {
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global $wp_query;
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if ( (0 == count($wp_query->posts)) && !is_404() && !is_search() && ( $this->did_permalink || (!empty($_SERVER['QUERY_STRING']) && (false === strpos($_SERVER['REQUEST_URI'], '?'))) ) ) {
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// Don't 404 for these queries if they matched an object.
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if ( ( is_tag() || is_category() || is_author() ) && $wp_query->get_queried_object() ) {
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if ( !is_404() )
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status_header( 200 );
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return;
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}
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$wp_query->set_404();
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status_header( 404 );
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nocache_headers();
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} elseif ( !is_404() ) {
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status_header( 200 );
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}
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}
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|
|
/**
|
|
* Sets up all of the variables required by the WordPress environment.
|
|
*
|
|
* The action 'wp' has one parameter that references the WP object. It
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* allows for accessing the properties and methods to further manipulate the
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* object.
|
|
*
|
|
* @since 2.0.0
|
|
*
|
|
* @param string|array $query_args Passed to {@link parse_request()}
|
|
*/
|
|
function main($query_args = '') {
|
|
$this->init();
|
|
$this->parse_request($query_args);
|
|
$this->send_headers();
|
|
$this->query_posts();
|
|
$this->handle_404();
|
|
$this->register_globals();
|
|
do_action_ref_array('wp', array(&$this));
|
|
}
|
|
|
|
/**
|
|
* PHP4 Constructor - Does nothing.
|
|
*
|
|
* Call main() method when ready to run setup.
|
|
*
|
|
* @since 2.0.0
|
|
*
|
|
* @return WP
|
|
*/
|
|
function WP() {
|
|
// Empty.
|
|
}
|
|
}
|
|
|
|
/**
|
|
* WordPress Error class.
|
|
*
|
|
* Container for checking for WordPress errors and error messages. Return
|
|
* WP_Error and use {@link is_wp_error()} to check if this class is returned.
|
|
* Many core WordPress functions pass this class in the event of an error and
|
|
* if not handled properly will result in code errors.
|
|
*
|
|
* @package WordPress
|
|
* @since 2.1.0
|
|
*/
|
|
class WP_Error {
|
|
/**
|
|
* Stores the list of errors.
|
|
*
|
|
* @since 2.1.0
|
|
* @var array
|
|
* @access private
|
|
*/
|
|
var $errors = array();
|
|
|
|
/**
|
|
* Stores the list of data for error codes.
|
|
*
|
|
* @since 2.1.0
|
|
* @var array
|
|
* @access private
|
|
*/
|
|
var $error_data = array();
|
|
|
|
/**
|
|
* PHP4 Constructor - Sets up error message.
|
|
*
|
|
* If code parameter is empty then nothing will be done. It is possible to
|
|
* add multiple messages to the same code, but with other methods in the
|
|
* class.
|
|
*
|
|
* All parameters are optional, but if the code parameter is set, then the
|
|
* data parameter is optional.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string|int $code Error code
|
|
* @param string $message Error message
|
|
* @param mixed $data Optional. Error data.
|
|
* @return WP_Error
|
|
*/
|
|
function WP_Error($code = '', $message = '', $data = '') {
|
|
if ( empty($code) )
|
|
return;
|
|
|
|
$this->errors[$code][] = $message;
|
|
|
|
if ( ! empty($data) )
|
|
$this->error_data[$code] = $data;
|
|
}
|
|
|
|
/**
|
|
* Retrieve all error codes.
|
|
*
|
|
* @since 2.1.0
|
|
* @access public
|
|
*
|
|
* @return array List of error codes, if avaiable.
|
|
*/
|
|
function get_error_codes() {
|
|
if ( empty($this->errors) )
|
|
return array();
|
|
|
|
return array_keys($this->errors);
|
|
}
|
|
|
|
/**
|
|
* Retrieve first error code available.
|
|
*
|
|
* @since 2.1.0
|
|
* @access public
|
|
*
|
|
* @return string|int Empty string, if no error codes.
|
|
*/
|
|
function get_error_code() {
|
|
$codes = $this->get_error_codes();
|
|
|
|
if ( empty($codes) )
|
|
return '';
|
|
|
|
return $codes[0];
|
|
}
|
|
|
|
/**
|
|
* Retrieve all error messages or error messages matching code.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string|int $code Optional. Retrieve messages matching code, if exists.
|
|
* @return array Error strings on success, or empty array on failure (if using codee parameter).
|
|
*/
|
|
function get_error_messages($code = '') {
|
|
// Return all messages if no code specified.
|
|
if ( empty($code) ) {
|
|
$all_messages = array();
|
|
foreach ( (array) $this->errors as $code => $messages )
|
|
$all_messages = array_merge($all_messages, $messages);
|
|
|
|
return $all_messages;
|
|
}
|
|
|
|
if ( isset($this->errors[$code]) )
|
|
return $this->errors[$code];
|
|
else
|
|
return array();
|
|
}
|
|
|
|
/**
|
|
* Get single error message.
|
|
*
|
|
* This will get the first message available for the code. If no code is
|
|
* given then the first code available will be used.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string|int $code Optional. Error code to retrieve message.
|
|
* @return string
|
|
*/
|
|
function get_error_message($code = '') {
|
|
if ( empty($code) )
|
|
$code = $this->get_error_code();
|
|
$messages = $this->get_error_messages($code);
|
|
if ( empty($messages) )
|
|
return '';
|
|
return $messages[0];
|
|
}
|
|
|
|
/**
|
|
* Retrieve error data for error code.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string|int $code Optional. Error code.
|
|
* @return mixed Null, if no errors.
|
|
*/
|
|
function get_error_data($code = '') {
|
|
if ( empty($code) )
|
|
$code = $this->get_error_code();
|
|
|
|
if ( isset($this->error_data[$code]) )
|
|
return $this->error_data[$code];
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Append more error messages to list of error messages.
|
|
*
|
|
* @since 2.1.0
|
|
* @access public
|
|
*
|
|
* @param string|int $code Error code.
|
|
* @param string $message Error message.
|
|
* @param mixed $data Optional. Error data.
|
|
*/
|
|
function add($code, $message, $data = '') {
|
|
$this->errors[$code][] = $message;
|
|
if ( ! empty($data) )
|
|
$this->error_data[$code] = $data;
|
|
}
|
|
|
|
/**
|
|
* Add data for error code.
|
|
*
|
|
* The error code can only contain one error data.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param mixed $data Error data.
|
|
* @param string|int $code Error code.
|
|
*/
|
|
function add_data($data, $code = '') {
|
|
if ( empty($code) )
|
|
$code = $this->get_error_code();
|
|
|
|
$this->error_data[$code] = $data;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check whether variable is a WordPress Error.
|
|
*
|
|
* Looks at the object and if a WP_Error class. Does not check to see if the
|
|
* parent is also WP_Error, so can't inherit WP_Error and still use this
|
|
* function.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param mixed $thing Check if unknown variable is WordPress Error object.
|
|
* @return bool True, if WP_Error. False, if not WP_Error.
|
|
*/
|
|
function is_wp_error($thing) {
|
|
if ( is_object($thing) && is_a($thing, 'WP_Error') )
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* A class for displaying various tree-like structures.
|
|
*
|
|
* Extend the Walker class to use it, see examples at the below. Child classes
|
|
* do not need to implement all of the abstract methods in the class. The child
|
|
* only needs to implement the methods that are needed. Also, the methods are
|
|
* not strictly abstract in that the parameter definition needs to be followed.
|
|
* The child classes can have additional parameters.
|
|
*
|
|
* @package WordPress
|
|
* @since 2.1.0
|
|
* @abstract
|
|
*/
|
|
class Walker {
|
|
/**
|
|
* What the class handles.
|
|
*
|
|
* @since 2.1.0
|
|
* @var string
|
|
* @access public
|
|
*/
|
|
var $tree_type;
|
|
|
|
/**
|
|
* DB fields to use.
|
|
*
|
|
* @since 2.1.0
|
|
* @var array
|
|
* @access protected
|
|
*/
|
|
var $db_fields;
|
|
|
|
/**
|
|
* Max number of pages walked by the paged walker
|
|
*
|
|
* @since 2.7.0
|
|
* @var int
|
|
* @access protected
|
|
*/
|
|
var $max_pages = 1;
|
|
|
|
/**
|
|
* Starts the list before the elements are added.
|
|
*
|
|
* Additional parameters are used in child classes. The args parameter holds
|
|
* additional values that may be used with the child class methods. This
|
|
* method is called at the start of the output list.
|
|
*
|
|
* @since 2.1.0
|
|
* @abstract
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
*/
|
|
function start_lvl(&$output) {}
|
|
|
|
/**
|
|
* Ends the list of after the elements are added.
|
|
*
|
|
* Additional parameters are used in child classes. The args parameter holds
|
|
* additional values that may be used with the child class methods. This
|
|
* method finishes the list at the end of output of the elements.
|
|
*
|
|
* @since 2.1.0
|
|
* @abstract
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
*/
|
|
function end_lvl(&$output) {}
|
|
|
|
/**
|
|
* Start the element output.
|
|
*
|
|
* Additional parameters are used in child classes. The args parameter holds
|
|
* additional values that may be used with the child class methods. Includes
|
|
* the element output also.
|
|
*
|
|
* @since 2.1.0
|
|
* @abstract
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
*/
|
|
function start_el(&$output) {}
|
|
|
|
/**
|
|
* Ends the element output, if needed.
|
|
*
|
|
* Additional parameters are used in child classes. The args parameter holds
|
|
* additional values that may be used with the child class methods.
|
|
*
|
|
* @since 2.1.0
|
|
* @abstract
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
*/
|
|
function end_el(&$output) {}
|
|
|
|
/**
|
|
* Traverse elements to create list from elements.
|
|
*
|
|
* Display one element if the element doesn't have any children otherwise,
|
|
* display the element and its children. Will only traverse up to the max
|
|
* depth and no ignore elements under that depth. It is possible to set the
|
|
* max depth to include all depths, see walk() method.
|
|
*
|
|
* This method shouldn't be called directly, use the walk() method instead.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @param object $element Data object
|
|
* @param array $children_elements List of elements to continue traversing.
|
|
* @param int $max_depth Max depth to traverse.
|
|
* @param int $depth Depth of current element.
|
|
* @param array $args
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @return null Null on failure with no changes to parameters.
|
|
*/
|
|
function display_element( $element, &$children_elements, $max_depth, $depth=0, $args, &$output ) {
|
|
|
|
if ( !$element )
|
|
return;
|
|
|
|
$id_field = $this->db_fields['id'];
|
|
|
|
//display this element
|
|
if ( is_array( $args[0] ) )
|
|
$args[0]['has_children'] = ! empty( $children_elements[$element->$id_field] );
|
|
$cb_args = array_merge( array(&$output, $element, $depth), $args);
|
|
call_user_func_array(array(&$this, 'start_el'), $cb_args);
|
|
|
|
$id = $element->$id_field;
|
|
|
|
// descend only when the depth is right and there are childrens for this element
|
|
if ( ($max_depth == 0 || $max_depth > $depth+1 ) && isset( $children_elements[$id]) ) {
|
|
|
|
foreach( $children_elements[ $id ] as $child ){
|
|
|
|
if ( !isset($newlevel) ) {
|
|
$newlevel = true;
|
|
//start the child delimiter
|
|
$cb_args = array_merge( array(&$output, $depth), $args);
|
|
call_user_func_array(array(&$this, 'start_lvl'), $cb_args);
|
|
}
|
|
$this->display_element( $child, $children_elements, $max_depth, $depth + 1, $args, $output );
|
|
}
|
|
unset( $children_elements[ $id ] );
|
|
}
|
|
|
|
if ( isset($newlevel) && $newlevel ){
|
|
//end the child delimiter
|
|
$cb_args = array_merge( array(&$output, $depth), $args);
|
|
call_user_func_array(array(&$this, 'end_lvl'), $cb_args);
|
|
}
|
|
|
|
//end this element
|
|
$cb_args = array_merge( array(&$output, $element, $depth), $args);
|
|
call_user_func_array(array(&$this, 'end_el'), $cb_args);
|
|
}
|
|
|
|
/**
|
|
* Display array of elements hierarchically.
|
|
*
|
|
* It is a generic function which does not assume any existing order of
|
|
* elements. max_depth = -1 means flatly display every element. max_depth =
|
|
* 0 means display all levels. max_depth > 0 specifies the number of
|
|
* display levels.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param array $elements
|
|
* @param int $max_depth
|
|
* @return string
|
|
*/
|
|
function walk( $elements, $max_depth) {
|
|
|
|
$args = array_slice(func_get_args(), 2);
|
|
$output = '';
|
|
|
|
if ($max_depth < -1) //invalid parameter
|
|
return $output;
|
|
|
|
if (empty($elements)) //nothing to walk
|
|
return $output;
|
|
|
|
$id_field = $this->db_fields['id'];
|
|
$parent_field = $this->db_fields['parent'];
|
|
|
|
// flat display
|
|
if ( -1 == $max_depth ) {
|
|
$empty_array = array();
|
|
foreach ( $elements as $e )
|
|
$this->display_element( $e, $empty_array, 1, 0, $args, $output );
|
|
return $output;
|
|
}
|
|
|
|
/*
|
|
* need to display in hierarchical order
|
|
* seperate elements into two buckets: top level and children elements
|
|
* children_elements is two dimensional array, eg.
|
|
* children_elements[10][] contains all sub-elements whose parent is 10.
|
|
*/
|
|
$top_level_elements = array();
|
|
$children_elements = array();
|
|
foreach ( $elements as $e) {
|
|
if ( 0 == $e->$parent_field )
|
|
$top_level_elements[] = $e;
|
|
else
|
|
$children_elements[ $e->$parent_field ][] = $e;
|
|
}
|
|
|
|
/*
|
|
* when none of the elements is top level
|
|
* assume the first one must be root of the sub elements
|
|
*/
|
|
if ( empty($top_level_elements) ) {
|
|
|
|
$first = array_slice( $elements, 0, 1 );
|
|
$root = $first[0];
|
|
|
|
$top_level_elements = array();
|
|
$children_elements = array();
|
|
foreach ( $elements as $e) {
|
|
if ( $root->$parent_field == $e->$parent_field )
|
|
$top_level_elements[] = $e;
|
|
else
|
|
$children_elements[ $e->$parent_field ][] = $e;
|
|
}
|
|
}
|
|
|
|
foreach ( $top_level_elements as $e )
|
|
$this->display_element( $e, $children_elements, $max_depth, 0, $args, $output );
|
|
|
|
/*
|
|
* if we are displaying all levels, and remaining children_elements is not empty,
|
|
* then we got orphans, which should be displayed regardless
|
|
*/
|
|
if ( ( $max_depth == 0 ) && count( $children_elements ) > 0 ) {
|
|
$empty_array = array();
|
|
foreach ( $children_elements as $orphans )
|
|
foreach( $orphans as $op )
|
|
$this->display_element( $op, $empty_array, 1, 0, $args, $output );
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* paged_walk() - produce a page of nested elements
|
|
*
|
|
* Given an array of hierarchical elements, the maximum depth, a specific page number,
|
|
* and number of elements per page, this function first determines all top level root elements
|
|
* belonging to that page, then lists them and all of their children in hierarchical order.
|
|
*
|
|
* @package WordPress
|
|
* @since 2.7
|
|
* @param $max_depth = 0 means display all levels; $max_depth > 0 specifies the number of display levels.
|
|
* @param $page_num the specific page number, beginning with 1.
|
|
* @return XHTML of the specified page of elements
|
|
*/
|
|
function paged_walk( $elements, $max_depth, $page_num, $per_page ) {
|
|
|
|
/* sanity check */
|
|
if ( empty($elements) || $max_depth < -1 )
|
|
return '';
|
|
|
|
$args = array_slice( func_get_args(), 4 );
|
|
$output = '';
|
|
|
|
$id_field = $this->db_fields['id'];
|
|
$parent_field = $this->db_fields['parent'];
|
|
|
|
$count = -1;
|
|
if ( -1 == $max_depth )
|
|
$total_top = count( $elements );
|
|
if ( $page_num < 1 || $per_page < 0 ) {
|
|
// No paging
|
|
$paging = false;
|
|
$start = 0;
|
|
if ( -1 == $max_depth )
|
|
$end = $total_top;
|
|
$this->max_pages = 1;
|
|
} else {
|
|
$paging = true;
|
|
$start = ( (int)$page_num - 1 ) * (int)$per_page;
|
|
$end = $start + $per_page;
|
|
if ( -1 == $max_depth )
|
|
$this->max_pages = ceil($total_top / $per_page);
|
|
}
|
|
|
|
// flat display
|
|
if ( -1 == $max_depth ) {
|
|
if ( !empty($args[0]['reverse_top_level']) ) {
|
|
$elements = array_reverse( $elements );
|
|
$oldstart = $start;
|
|
$start = $total_top - $end;
|
|
$end = $total_top - $oldstart;
|
|
}
|
|
|
|
$empty_array = array();
|
|
foreach ( $elements as $e ) {
|
|
$count++;
|
|
if ( $count < $start )
|
|
continue;
|
|
if ( $count >= $end )
|
|
break;
|
|
$this->display_element( $e, $empty_array, 1, 0, $args, $output );
|
|
}
|
|
return $output;
|
|
}
|
|
|
|
/*
|
|
* seperate elements into two buckets: top level and children elements
|
|
* children_elements is two dimensional array, eg.
|
|
* children_elements[10][] contains all sub-elements whose parent is 10.
|
|
*/
|
|
$top_level_elements = array();
|
|
$children_elements = array();
|
|
foreach ( $elements as $e) {
|
|
if ( 0 == $e->$parent_field )
|
|
$top_level_elements[] = $e;
|
|
else
|
|
$children_elements[ $e->$parent_field ][] = $e;
|
|
}
|
|
|
|
$total_top = count( $top_level_elements );
|
|
if ( $paging )
|
|
$this->max_pages = ceil($total_top / $per_page);
|
|
else
|
|
$end = $total_top;
|
|
|
|
if ( !empty($args[0]['reverse_top_level']) ) {
|
|
$top_level_elements = array_reverse( $top_level_elements );
|
|
$oldstart = $start;
|
|
$start = $total_top - $end;
|
|
$end = $total_top - $oldstart;
|
|
}
|
|
if ( !empty($args[0]['reverse_children']) ) {
|
|
foreach ( $children_elements as $parent => $children )
|
|
$children_elements[$parent] = array_reverse( $children );
|
|
}
|
|
|
|
foreach ( $top_level_elements as $e ) {
|
|
$count++;
|
|
|
|
//for the last page, need to unset earlier children in order to keep track of orphans
|
|
if ( $end >= $total_top && $count < $start )
|
|
$this->unset_children( $e, $children_elements );
|
|
|
|
if ( $count < $start )
|
|
continue;
|
|
|
|
if ( $count >= $end )
|
|
break;
|
|
|
|
$this->display_element( $e, $children_elements, $max_depth, 0, $args, $output );
|
|
}
|
|
|
|
if ( $end >= $total_top && count( $children_elements ) > 0 ) {
|
|
$empty_array = array();
|
|
foreach ( $children_elements as $orphans )
|
|
foreach( $orphans as $op )
|
|
$this->display_element( $op, $empty_array, 1, 0, $args, $output );
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
function get_number_of_root_elements( $elements ){
|
|
|
|
$num = 0;
|
|
$parent_field = $this->db_fields['parent'];
|
|
|
|
foreach ( $elements as $e) {
|
|
if ( 0 == $e->$parent_field )
|
|
$num++;
|
|
}
|
|
return $num;
|
|
}
|
|
|
|
// unset all the children for a given top level element
|
|
function unset_children( $e, &$children_elements ){
|
|
|
|
if ( !$e || !$children_elements )
|
|
return;
|
|
|
|
$id_field = $this->db_fields['id'];
|
|
$id = $e->$id_field;
|
|
|
|
if ( !empty($children_elements[$id]) && is_array($children_elements[$id]) )
|
|
foreach ( (array) $children_elements[$id] as $child )
|
|
$this->unset_children( $child, $children_elements );
|
|
|
|
if ( isset($children_elements[$id]) )
|
|
unset( $children_elements[$id] );
|
|
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Create HTML list of pages.
|
|
*
|
|
* @package WordPress
|
|
* @since 2.1.0
|
|
* @uses Walker
|
|
*/
|
|
class Walker_Page extends Walker {
|
|
/**
|
|
* @see Walker::$tree_type
|
|
* @since 2.1.0
|
|
* @var string
|
|
*/
|
|
var $tree_type = 'page';
|
|
|
|
/**
|
|
* @see Walker::$db_fields
|
|
* @since 2.1.0
|
|
* @todo Decouple this.
|
|
* @var array
|
|
*/
|
|
var $db_fields = array ('parent' => 'post_parent', 'id' => 'ID');
|
|
|
|
/**
|
|
* @see Walker::start_lvl()
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param int $depth Depth of page. Used for padding.
|
|
*/
|
|
function start_lvl(&$output, $depth) {
|
|
$indent = str_repeat("\t", $depth);
|
|
$output .= "\n$indent<ul>\n";
|
|
}
|
|
|
|
/**
|
|
* @see Walker::end_lvl()
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param int $depth Depth of page. Used for padding.
|
|
*/
|
|
function end_lvl(&$output, $depth) {
|
|
$indent = str_repeat("\t", $depth);
|
|
$output .= "$indent</ul>\n";
|
|
}
|
|
|
|
/**
|
|
* @see Walker::start_el()
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param object $page Page data object.
|
|
* @param int $depth Depth of page. Used for padding.
|
|
* @param int $current_page Page ID.
|
|
* @param array $args
|
|
*/
|
|
function start_el(&$output, $page, $depth, $args, $current_page) {
|
|
if ( $depth )
|
|
$indent = str_repeat("\t", $depth);
|
|
else
|
|
$indent = '';
|
|
|
|
extract($args, EXTR_SKIP);
|
|
$css_class = 'page_item page-item-'.$page->ID;
|
|
if ( !empty($current_page) ) {
|
|
$_current_page = get_page( $current_page );
|
|
if ( isset($_current_page->ancestors) && in_array($page->ID, (array) $_current_page->ancestors) )
|
|
$css_class .= ' current_page_ancestor';
|
|
if ( $page->ID == $current_page )
|
|
$css_class .= ' current_page_item';
|
|
elseif ( $_current_page && $page->ID == $_current_page->post_parent )
|
|
$css_class .= ' current_page_parent';
|
|
} elseif ( $page->ID == get_option('page_for_posts') ) {
|
|
$css_class .= ' current_page_parent';
|
|
}
|
|
|
|
$output .= $indent . '<li class="' . $css_class . '"><a href="' . get_page_link($page->ID) . '" title="' . attribute_escape(apply_filters('the_title', $page->post_title)) . '">' . $link_before . apply_filters('the_title', $page->post_title) . $link_after . '</a>';
|
|
|
|
if ( !empty($show_date) ) {
|
|
if ( 'modified' == $show_date )
|
|
$time = $page->post_modified;
|
|
else
|
|
$time = $page->post_date;
|
|
|
|
$output .= " " . mysql2date($date_format, $time);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @see Walker::end_el()
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param object $page Page data object. Not used.
|
|
* @param int $depth Depth of page. Not Used.
|
|
*/
|
|
function end_el(&$output, $page, $depth) {
|
|
$output .= "</li>\n";
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Create HTML dropdown list of pages.
|
|
*
|
|
* @package WordPress
|
|
* @since 2.1.0
|
|
* @uses Walker
|
|
*/
|
|
class Walker_PageDropdown extends Walker {
|
|
/**
|
|
* @see Walker::$tree_type
|
|
* @since 2.1.0
|
|
* @var string
|
|
*/
|
|
var $tree_type = 'page';
|
|
|
|
/**
|
|
* @see Walker::$db_fields
|
|
* @since 2.1.0
|
|
* @todo Decouple this
|
|
* @var array
|
|
*/
|
|
var $db_fields = array ('parent' => 'post_parent', 'id' => 'ID');
|
|
|
|
/**
|
|
* @see Walker::start_el()
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param object $page Page data object.
|
|
* @param int $depth Depth of page in reference to parent pages. Used for padding.
|
|
* @param array $args Uses 'selected' argument for selected page to set selected HTML attribute for option element.
|
|
*/
|
|
function start_el(&$output, $page, $depth, $args) {
|
|
$pad = str_repeat(' ', $depth * 3);
|
|
|
|
$output .= "\t<option class=\"level-$depth\" value=\"$page->ID\"";
|
|
if ( $page->ID == $args['selected'] )
|
|
$output .= ' selected="selected"';
|
|
$output .= '>';
|
|
$title = wp_specialchars($page->post_title);
|
|
$output .= "$pad$title";
|
|
$output .= "</option>\n";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Create HTML list of categories.
|
|
*
|
|
* @package WordPress
|
|
* @since 2.1.0
|
|
* @uses Walker
|
|
*/
|
|
class Walker_Category extends Walker {
|
|
/**
|
|
* @see Walker::$tree_type
|
|
* @since 2.1.0
|
|
* @var string
|
|
*/
|
|
var $tree_type = 'category';
|
|
|
|
/**
|
|
* @see Walker::$db_fields
|
|
* @since 2.1.0
|
|
* @todo Decouple this
|
|
* @var array
|
|
*/
|
|
var $db_fields = array ('parent' => 'parent', 'id' => 'term_id');
|
|
|
|
/**
|
|
* @see Walker::start_lvl()
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param int $depth Depth of category. Used for tab indentation.
|
|
* @param array $args Will only append content if style argument value is 'list'.
|
|
*/
|
|
function start_lvl(&$output, $depth, $args) {
|
|
if ( 'list' != $args['style'] )
|
|
return;
|
|
|
|
$indent = str_repeat("\t", $depth);
|
|
$output .= "$indent<ul class='children'>\n";
|
|
}
|
|
|
|
/**
|
|
* @see Walker::end_lvl()
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param int $depth Depth of category. Used for tab indentation.
|
|
* @param array $args Will only append content if style argument value is 'list'.
|
|
*/
|
|
function end_lvl(&$output, $depth, $args) {
|
|
if ( 'list' != $args['style'] )
|
|
return;
|
|
|
|
$indent = str_repeat("\t", $depth);
|
|
$output .= "$indent</ul>\n";
|
|
}
|
|
|
|
/**
|
|
* @see Walker::start_el()
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param object $category Category data object.
|
|
* @param int $depth Depth of category in reference to parents.
|
|
* @param array $args
|
|
*/
|
|
function start_el(&$output, $category, $depth, $args) {
|
|
extract($args);
|
|
|
|
$cat_name = attribute_escape( $category->name);
|
|
$cat_name = apply_filters( 'list_cats', $cat_name, $category );
|
|
$link = '<a href="' . get_category_link( $category->term_id ) . '" ';
|
|
if ( $use_desc_for_title == 0 || empty($category->description) )
|
|
$link .= 'title="' . sprintf(__( 'View all posts filed under %s' ), $cat_name) . '"';
|
|
else
|
|
$link .= 'title="' . attribute_escape( apply_filters( 'category_description', $category->description, $category )) . '"';
|
|
$link .= '>';
|
|
$link .= $cat_name . '</a>';
|
|
|
|
if ( (! empty($feed_image)) || (! empty($feed)) ) {
|
|
$link .= ' ';
|
|
|
|
if ( empty($feed_image) )
|
|
$link .= '(';
|
|
|
|
$link .= '<a href="' . get_category_feed_link($category->term_id, $feed_type) . '"';
|
|
|
|
if ( empty($feed) )
|
|
$alt = ' alt="' . sprintf(__( 'Feed for all posts filed under %s' ), $cat_name ) . '"';
|
|
else {
|
|
$title = ' title="' . $feed . '"';
|
|
$alt = ' alt="' . $feed . '"';
|
|
$name = $feed;
|
|
$link .= $title;
|
|
}
|
|
|
|
$link .= '>';
|
|
|
|
if ( empty($feed_image) )
|
|
$link .= $name;
|
|
else
|
|
$link .= "<img src='$feed_image'$alt$title" . ' />';
|
|
$link .= '</a>';
|
|
if ( empty($feed_image) )
|
|
$link .= ')';
|
|
}
|
|
|
|
if ( isset($show_count) && $show_count )
|
|
$link .= ' (' . intval($category->count) . ')';
|
|
|
|
if ( isset($show_date) && $show_date ) {
|
|
$link .= ' ' . gmdate('Y-m-d', $category->last_update_timestamp);
|
|
}
|
|
|
|
if ( isset($current_category) && $current_category )
|
|
$_current_category = get_category( $current_category );
|
|
|
|
if ( 'list' == $args['style'] ) {
|
|
$output .= "\t<li";
|
|
$class = 'cat-item cat-item-'.$category->term_id;
|
|
if ( isset($current_category) && $current_category && ($category->term_id == $current_category) )
|
|
$class .= ' current-cat';
|
|
elseif ( isset($_current_category) && $_current_category && ($category->term_id == $_current_category->parent) )
|
|
$class .= ' current-cat-parent';
|
|
$output .= ' class="'.$class.'"';
|
|
$output .= ">$link\n";
|
|
} else {
|
|
$output .= "\t$link<br />\n";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @see Walker::end_el()
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param object $page Not used.
|
|
* @param int $depth Depth of category. Not used.
|
|
* @param array $args Only uses 'list' for whether should append to output.
|
|
*/
|
|
function end_el(&$output, $page, $depth, $args) {
|
|
if ( 'list' != $args['style'] )
|
|
return;
|
|
|
|
$output .= "</li>\n";
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Create HTML dropdown list of Categories.
|
|
*
|
|
* @package WordPress
|
|
* @since 2.1.0
|
|
* @uses Walker
|
|
*/
|
|
class Walker_CategoryDropdown extends Walker {
|
|
/**
|
|
* @see Walker::$tree_type
|
|
* @since 2.1.0
|
|
* @var string
|
|
*/
|
|
var $tree_type = 'category';
|
|
|
|
/**
|
|
* @see Walker::$db_fields
|
|
* @since 2.1.0
|
|
* @todo Decouple this
|
|
* @var array
|
|
*/
|
|
var $db_fields = array ('parent' => 'parent', 'id' => 'term_id');
|
|
|
|
/**
|
|
* @see Walker::start_el()
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param object $category Category data object.
|
|
* @param int $depth Depth of category. Used for padding.
|
|
* @param array $args Uses 'selected', 'show_count', and 'show_last_update' keys, if they exist.
|
|
*/
|
|
function start_el(&$output, $category, $depth, $args) {
|
|
$pad = str_repeat(' ', $depth * 3);
|
|
|
|
$cat_name = apply_filters('list_cats', $category->name, $category);
|
|
$output .= "\t<option class=\"level-$depth\" value=\"".$category->term_id."\"";
|
|
if ( $category->term_id == $args['selected'] )
|
|
$output .= ' selected="selected"';
|
|
$output .= '>';
|
|
$output .= $pad.$cat_name;
|
|
if ( $args['show_count'] )
|
|
$output .= ' ('. $category->count .')';
|
|
if ( $args['show_last_update'] ) {
|
|
$format = 'Y-m-d';
|
|
$output .= ' ' . gmdate($format, $category->last_update_timestamp);
|
|
}
|
|
$output .= "</option>\n";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Send XML response back to AJAX request.
|
|
*
|
|
* @package WordPress
|
|
* @since 2.1.0
|
|
*/
|
|
class WP_Ajax_Response {
|
|
/**
|
|
* Store XML responses to send.
|
|
*
|
|
* @since 2.1.0
|
|
* @var array
|
|
* @access private
|
|
*/
|
|
var $responses = array();
|
|
|
|
/**
|
|
* PHP4 Constructor - Passes args to {@link WP_Ajax_Response::add()}.
|
|
*
|
|
* @since 2.1.0
|
|
* @see WP_Ajax_Response::add()
|
|
*
|
|
* @param string|array $args Optional. Will be passed to add() method.
|
|
* @return WP_Ajax_Response
|
|
*/
|
|
function WP_Ajax_Response( $args = '' ) {
|
|
if ( !empty($args) )
|
|
$this->add($args);
|
|
}
|
|
|
|
/**
|
|
* Append to XML response based on given arguments.
|
|
*
|
|
* The arguments that can be passed in the $args parameter are below. It is
|
|
* also possible to pass a WP_Error object in either the 'id' or 'data'
|
|
* argument. The parameter isn't actually optional, content should be given
|
|
* in order to send the correct response.
|
|
*
|
|
* 'what' argument is a string that is the XMLRPC response type.
|
|
* 'action' argument is a boolean or string that acts like a nonce.
|
|
* 'id' argument can be WP_Error or an integer.
|
|
* 'old_id' argument is false by default or an integer of the previous ID.
|
|
* 'position' argument is an integer or a string with -1 = top, 1 = bottom,
|
|
* html ID = after, -html ID = before.
|
|
* 'data' argument is a string with the content or message.
|
|
* 'supplemental' argument is an array of strings that will be children of
|
|
* the supplemental element.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string|array $args Override defaults.
|
|
* @return string XML response.
|
|
*/
|
|
function add( $args = '' ) {
|
|
$defaults = array(
|
|
'what' => 'object', 'action' => false,
|
|
'id' => '0', 'old_id' => false,
|
|
'position' => 1,
|
|
'data' => '', 'supplemental' => array()
|
|
);
|
|
|
|
$r = wp_parse_args( $args, $defaults );
|
|
extract( $r, EXTR_SKIP );
|
|
$position = preg_replace( '/[^a-z0-9:_-]/i', '', $position );
|
|
|
|
if ( is_wp_error($id) ) {
|
|
$data = $id;
|
|
$id = 0;
|
|
}
|
|
|
|
$response = '';
|
|
if ( is_wp_error($data) ) {
|
|
foreach ( (array) $data->get_error_codes() as $code ) {
|
|
$response .= "<wp_error code='$code'><![CDATA[" . $data->get_error_message($code) . "]]></wp_error>";
|
|
if ( !$error_data = $data->get_error_data($code) )
|
|
continue;
|
|
$class = '';
|
|
if ( is_object($error_data) ) {
|
|
$class = ' class="' . get_class($error_data) . '"';
|
|
$error_data = get_object_vars($error_data);
|
|
}
|
|
|
|
$response .= "<wp_error_data code='$code'$class>";
|
|
|
|
if ( is_scalar($error_data) ) {
|
|
$response .= "<![CDATA[$error_data]]>";
|
|
} elseif ( is_array($error_data) ) {
|
|
foreach ( $error_data as $k => $v )
|
|
$response .= "<$k><![CDATA[$v]]></$k>";
|
|
}
|
|
|
|
$response .= "</wp_error_data>";
|
|
}
|
|
} else {
|
|
$response = "<response_data><![CDATA[$data]]></response_data>";
|
|
}
|
|
|
|
$s = '';
|
|
if ( is_array($supplemental) ) {
|
|
foreach ( $supplemental as $k => $v )
|
|
$s .= "<$k><![CDATA[$v]]></$k>";
|
|
$s = "<supplemental>$s</supplemental>";
|
|
}
|
|
|
|
if ( false === $action )
|
|
$action = $_POST['action'];
|
|
|
|
$x = '';
|
|
$x .= "<response action='{$action}_$id'>"; // The action attribute in the xml output is formatted like a nonce action
|
|
$x .= "<$what id='$id' " . ( false === $old_id ? '' : "old_id='$old_id' " ) . "position='$position'>";
|
|
$x .= $response;
|
|
$x .= $s;
|
|
$x .= "</$what>";
|
|
$x .= "</response>";
|
|
|
|
$this->responses[] = $x;
|
|
return $x;
|
|
}
|
|
|
|
/**
|
|
* Display XML formatted responses.
|
|
*
|
|
* Sets the content type header to text/xml.
|
|
*
|
|
* @since 2.1.0
|
|
*/
|
|
function send() {
|
|
header('Content-Type: text/xml');
|
|
echo "<?xml version='1.0' standalone='yes'?><wp_ajax>";
|
|
foreach ( (array) $this->responses as $response )
|
|
echo $response;
|
|
echo '</wp_ajax>';
|
|
die();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This class must be extended for each widget and WP_Widgets::widget(), WP_Widgets::update()
|
|
* and WP_Widgets::form() need to be over-ridden.
|
|
*
|
|
* @package WordPress
|
|
* @since 2.8
|
|
*/
|
|
class WP_Widgets {
|
|
|
|
var $id_base; // Root id for all widgets of this type.
|
|
var $name; // Name for this widget type.
|
|
var $widget_options; // Option array passed to wp_register_sidebar_widget()
|
|
var $control_options; // Option array passed to wp_register_widget_control()
|
|
|
|
var $number = false; // Unique ID number of the current instance.
|
|
var $id = false; // Unique ID string of the current instance (id_base-number)
|
|
var $updated = false; // Set true when we update the data after a POST submit - makes sure we don't do it twice.
|
|
|
|
// Member functions that you must over-ride.
|
|
|
|
/** Echo the actual widget content. Subclasses should over-ride this function
|
|
* to generate their widget code. */
|
|
function widget($args, $instance) {
|
|
die('function WP_Widgets::widget() must be over-ridden in a sub-class.');
|
|
}
|
|
|
|
/** Update a particular instance.
|
|
* This function should check that $new_instance is set correctly.
|
|
* The newly calculated value of $instance should be returned. */
|
|
function update($new_instance, $old_instance) {
|
|
die('function WP_Widgets::update() must be over-ridden in a sub-class.');
|
|
}
|
|
|
|
/** Echo a control form for the current instance. */
|
|
function form($instance) {
|
|
die('function WP_Widgets::form() must be over-ridden in a sub-class.');
|
|
}
|
|
|
|
// Functions you'll need to call.
|
|
|
|
/**
|
|
* PHP4 constructor
|
|
*/
|
|
function WP_Widgets( $id_base, $name, $widget_options = array(), $control_options = array() ) {
|
|
$this->__construct( $id_base, $name, $widget_options, $control_options );
|
|
}
|
|
|
|
/**
|
|
* PHP5 constructor
|
|
* widget_options: passed to wp_register_sidebar_widget()
|
|
* - description
|
|
* - classname
|
|
* control_options: passed to wp_register_widget_control()
|
|
* - width
|
|
* - height
|
|
*/
|
|
function __construct( $id_base, $name, $widget_options = array(), $control_options = array() ) {
|
|
$this->id_base = $id_base;
|
|
$this->name = $name;
|
|
$this->option_name = 'wp_widget_' . $id_base;
|
|
$this->widget_options = wp_parse_args( $widget_options, array('classname' => $this->option_name) );
|
|
$this->control_options = wp_parse_args( $control_options, array('id_base' => $this->id_base) );
|
|
|
|
//add_action( 'widgets_init', array( &$this, 'register' ) );
|
|
}
|
|
|
|
/** Helper function to be called by form().
|
|
* Returns an HTML name for the field. */
|
|
function get_field_name($field_name) {
|
|
return 'widget-' . $this->id_base . '[' . $this->number . '][' . $field_name . ']';
|
|
}
|
|
|
|
/** Helper function to be called by form().
|
|
* Returns an HTML id for the field. */
|
|
function get_field_id($field_name) {
|
|
return 'widget-' . $this->id_base . '-' . $this->number . '-' . $field_name;
|
|
}
|
|
|
|
/** Registers this widget-type.
|
|
* Called during the 'widgets_init' action. */
|
|
function register() {
|
|
if ( ! $all_instances = get_option($this->option_name) )
|
|
$all_instances = array();
|
|
|
|
$registered = false;
|
|
foreach( array_keys($all_instances) as $number ) {
|
|
// Old widgets can have null values for some reason
|
|
if ( !isset($all_instances[$number]['_multiwidget']) )
|
|
continue;
|
|
|
|
$this->_set($number);
|
|
$registered = true;
|
|
$this->_register_one($number);
|
|
}
|
|
|
|
// If there are none, we register the widget's existance with a
|
|
// generic template
|
|
if ( !$registered ) {
|
|
$this->_set(1);
|
|
$this->_register_one();
|
|
}
|
|
}
|
|
|
|
// Private Functions. Don't worry about these.
|
|
|
|
function _set($number) {
|
|
$this->number = $number;
|
|
$this->id = $this->id_base . '-' . $number;
|
|
}
|
|
|
|
function _get_display_callback() {
|
|
return array(&$this, 'display_callback');
|
|
}
|
|
|
|
function _get_control_callback() {
|
|
return array(&$this, 'control_callback');
|
|
}
|
|
|
|
/** Generate the actual widget content.
|
|
* Just finds the instance and calls widget().
|
|
* Do NOT over-ride this function. */
|
|
function display_callback( $args, $widget_args = 1 ) {
|
|
if ( is_numeric($widget_args) )
|
|
$widget_args = array( 'number' => $widget_args );
|
|
|
|
$widget_args = wp_parse_args( $widget_args, array( 'number' => -1 ) );
|
|
$this->_set( $widget_args['number'] );
|
|
|
|
// Data is stored as array:
|
|
// array( number => data for that instance of the widget, ... )
|
|
$all_instances = get_option($this->option_name);
|
|
if ( isset($all_instances[$this->number]) )
|
|
$this->widget($args, $all_instances[$this->number]);
|
|
}
|
|
|
|
/** Deal with changed settings and generate the control form.
|
|
* Do NOT over-ride this function. */
|
|
function control_callback( $widget_args = 1 ) {
|
|
global $wp_registered_widgets;
|
|
|
|
if ( is_numeric($widget_args) )
|
|
$widget_args = array( 'number' => $widget_args );
|
|
|
|
$widget_args = wp_parse_args( $widget_args, array( 'number' => -1 ) );
|
|
|
|
// Data is stored as array:
|
|
// array( number => data for that instance of the widget, ... )
|
|
$all_instances = get_option($this->option_name);
|
|
if ( !is_array($all_instances) )
|
|
$all_instances = array();
|
|
|
|
// We need to update the data
|
|
if ( !$this->updated && !empty($_POST['sidebar']) ) {
|
|
// Tells us what sidebar to put the data in
|
|
$sidebar = (string) $_POST['sidebar'];
|
|
|
|
$sidebars_widgets = wp_get_sidebars_widgets();
|
|
if ( isset($sidebars_widgets[$sidebar]) )
|
|
$this_sidebar =& $sidebars_widgets[$sidebar];
|
|
else
|
|
$this_sidebar = array();
|
|
|
|
foreach ( $this_sidebar as $_widget_id ) {
|
|
// Remove all widgets of this type from the sidebar. We'll add the
|
|
// new data in a second. This makes sure we don't get any duplicate
|
|
// data since widget ids aren't necessarily persistent across multiple
|
|
// updates
|
|
if ( $this->_get_display_callback() == $wp_registered_widgets[$_widget_id]['callback'] && isset($wp_registered_widgets[$_widget_id]['params'][0]['number']) ) {
|
|
$number = $wp_registered_widgets[$_widget_id]['params'][0]['number'];
|
|
if( !in_array( $this->id_base . '-' . $number, (array)$_POST['widget-id'] ) ) {
|
|
// the widget has been removed.
|
|
unset($all_instances[$number]);
|
|
}
|
|
}
|
|
}
|
|
|
|
foreach( (array) $_POST['widget-' . $this->id_base] as $number => $new_instance ) {
|
|
$this->_set($number);
|
|
if ( isset($all_instances[$number]) )
|
|
$instance = $this->update($new_instance, $all_instances[$number]);
|
|
else
|
|
$instance = $this->update($new_instance, array());
|
|
|
|
if ( !empty($instance) ) {
|
|
$instance['_multiwidget'] = $number;
|
|
$all_instances[$number] = $instance;
|
|
}
|
|
}
|
|
|
|
update_option($this->option_name, $all_instances);
|
|
$this->updated = true; // So that we don't go through this more than once
|
|
}
|
|
|
|
// Here we echo out the form
|
|
if ( -1 == $widget_args['number'] ) {
|
|
// We echo out a template for a form which can be converted to a
|
|
// specific form later via JS
|
|
$this->_set('%i%');
|
|
$instance = array();
|
|
} else {
|
|
$this->_set($widget_args['number']);
|
|
$instance = $all_instances[ $widget_args['number'] ];
|
|
}
|
|
$this->form($instance);
|
|
}
|
|
|
|
/** Helper function: Registers a single instance. */
|
|
function _register_one($number = -1) {
|
|
wp_register_sidebar_widget( $this->id, $this->name, $this->_get_display_callback(), $this->widget_options, array( 'number' => $number ) );
|
|
wp_register_widget_control( $this->id, $this->name, $this->_get_control_callback(), $this->control_options, array( 'number' => $number ) );
|
|
}
|
|
|
|
}
|
|
|
|
?>
|