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<?php
/**
* Elgg page owner library
* Contains functions for managing page ownership and context
*
* @package Elgg.Core
* @subpackage PageOwner
*/
/**
* Gets the guid of the entity that owns the current page.
*
* @param int $guid Optional parameter used by elgg_set_page_owner_guid().
*
* @return int The current page owner guid (0 if none).
* @since 1.8
*/
function elgg_get_page_owner_guid($guid = 0) {
static $page_owner_guid;
if ($guid) {
$page_owner_guid = $guid;
}
if (isset($page_owner_guid)) {
return $page_owner_guid;
}
$guid = trigger_plugin_hook('page_owner', 'system', NULL, 0);
$page_owner_guid = $guid;
return $guid;
}
/**
* Gets the guid of the entity that owns the current page.
*
* @deprecated 1.8 Use get_page_owner_guid()
*
* @return int The current page owner guid (0 if none).
*/
function page_owner() {
elgg_deprecated_notice('page_owner() was deprecated by elgg_get_page_owner_guid().', 1.8);
return elgg_get_page_owner_guid();
}
/**
* Gets the owner entity for the current page.
*
* @return ElggEntity|false The current page owner or false if none.
*
* @since 1.8
*/
function elgg_get_page_owner() {
$guid = elgg_get_page_owner_guid();
if ($guid > 0) {
return get_entity($guid);
}
return FALSE;
}
/**
* Gets the owner entity for the current page.
*
* @deprecated 1.8 Use elgg_get_page_owner()
* @return ElggEntity|false The current page owner or false if none.
*
* @since 1.8
*/
function page_owner_entity() {
elgg_deprecated_notice('page_owner_entity() was deprecated by elgg_get_page_owner().', 1.8);
return elgg_get_page_owner();
}
/**
* Set the guid of the entity that owns this page
*
* @param int $guid The guid of the page owner
*
* @since 1.8
* @return void
*/
function elgg_set_page_owner_guid($guid) {
elgg_get_page_owner_guid($guid);
}
/**
* Registers a page owner handler function
*
* @param string $functionname The callback function
*
* @deprecated 1.8 Use the 'page_owner', 'system' plugin hook
* @return void
*/
function add_page_owner_handler($functionname) {
elgg_deprecated_notice("add_page_owner_handler() was deprecated by the plugin hook 'page_owner', 'system'.", 1.8);
}
/**
* Set a page owner entity
*
* @param int $entitytoset The GUID of the entity
*
* @deprecated 1.8 Use elgg_set_page_owner_guid()
* @return void
*/
function set_page_owner($entitytoset = -1) {
elgg_deprecated_notice('set_page_owner() was deprecated by elgg_set_page_owner_guid().', 1.8);
elgg_set_page_owner_guid($entitytoset);
}
/**
* Sets the functional context of a page
*
* @param string $context The context of the page
*
* @return string|false Either the context string, or false on failure
*/
function set_context($context) {
global $CONFIG;
if (!empty($context)) {
$context = trim($context);
$context = strtolower($context);
$CONFIG->context = $context;
return $context;
} else {
return false;
}
}
/**
* Returns the functional context of a page
*
* @return string The context, or 'main' if no context has been provided
*/
function get_context() {
global $CONFIG;
if (isset($CONFIG->context) && !empty($CONFIG->context)) {
return $CONFIG->context;
}
if ($context = get_plugin_name(true)) {
return $context;
}
return "main";
}
/**
* Handles default page owners
*
* @param string $hook page_owner
* @param string $entity_type system
* @param mixed $returnvalue Previous function's return value
* @param mixed $params Params
*
* @return int
*/
function default_page_owner_handler($hook, $entity_type, $returnvalue, $params) {
if ($returnvalue) {
return $returnvalue;
}
$username = get_input("username");
if ($username) {
if (substr_count($username, 'group:')) {
preg_match('/group\:([0-9]+)/i', $username, $matches);
$guid = $matches[1];
if ($entity = get_entity($guid)) {
return $entity->getGUID();
}
}
if ($user = get_user_by_username($username)) {
return $user->getGUID();
}
}
$owner = get_input("owner_guid");
if ($owner) {
if ($user = get_entity($owner)) {
return $user->getGUID();
}
}
return $returnvalue;
}
/**
* Loads the page owner functions
*
* @return void
*/
function page_owner_init() {
register_plugin_hook('page_owner', 'system', 'default_page_owner_handler');
}
register_elgg_event_handler('init', 'system', 'page_owner_init');
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