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Diffstat (limited to 'Zotlabs/Extend/Hook.php')
| -rw-r--r-- | Zotlabs/Extend/Hook.php | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/Zotlabs/Extend/Hook.php b/Zotlabs/Extend/Hook.php new file mode 100644 index 000000000..713165faf --- /dev/null +++ b/Zotlabs/Extend/Hook.php @@ -0,0 +1,107 @@ +<?php + +namespace Zotlabs\Extend; + + +class Hook { + + static public function register($hook,$file,$function,$version = 1,$priority = 0) { + if(is_array($function)) { + $function = serialize($function); + } + + $r = q("SELECT * FROM `hook` WHERE `hook` = '%s' AND `file` = '%s' AND `function` = '%s' and priority = %d and hook_version = %d LIMIT 1", + dbesc($hook), + dbesc($file), + dbesc($function), + intval($priority), + intval($version) + ); + if($r) + return true; + + // To aid in upgrade and transition, remove old settings for any registered hooks that match in all respects except + // for priority or hook_version + + $r = q("DELETE FROM `hook` where `hook` = '%s' and `file` = '%s' and `function` = '%s'", + dbesc($hook), + dbesc($file), + dbesc($function) + ); + + $r = q("INSERT INTO `hook` (`hook`, `file`, `function`, `priority`, `hook_version`) VALUES ( '%s', '%s', '%s', %d, %d )", + dbesc($hook), + dbesc($file), + dbesc($function), + intval($priority), + intval($version) + ); + + return $r; + } + + static public function unregister($hook,$file,$function,$version = 1,$priority = 0) { + if(is_array($function)) { + $function = serialize($function); + } + $r = q("DELETE FROM hook WHERE hook = '%s' AND `file` = '%s' AND `function` = '%s' and priority = %d and hook_version = %d", + dbesc($hook), + dbesc($file), + dbesc($function), + intval($priority), + intval($version) + ); + + return $r; + } + + // unregister all hooks with this file component. + // Useful for addon upgrades where you want to clean out old interfaces. + + static public function unregister_by_file($file) { + + $r = q("DELETE FROM hook WHERE `file` = '%s' ", + dbesc($file) + ); + + return $r; + } + + + /** + * @brief Inserts a hook into a page request. + * + * Insert a short-lived hook into the running page request. + * Hooks are normally persistent so that they can be called + * across asynchronous processes such as delivery and poll + * processes. + * + * insert_hook lets you attach a hook callback immediately + * which will not persist beyond the life of this page request + * or the current process. + * + * @param string $hook + * name of hook to attach callback + * @param string $fn + * function name of callback handler + * @param int $version + * hook interface version, 0 uses two callback params, 1 uses one callback param + * @param int $priority + * currently not implemented in this function, would require the hook array to be resorted + */ + + static public function insert($hook, $fn, $version = 0, $priority = 0) { + if(is_array($fn)) { + $fn = serialize($fn); + } + + if(! is_array(App::$hooks)) + App::$hooks = array(); + + if(! array_key_exists($hook, App::$hooks)) + App::$hooks[$hook] = array(); + + App::$hooks[$hook][] = array('', $fn, $priority, $version); + } + +}
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