eesyphp/includes/hooks.php

106 lines
2.6 KiB
PHP

<?php
use EesyPHP\Log;
$hooks = array();
/**
* Registered a hook on a specific event
*
* @param $event string The event name
* @param $callable callable The callable to run on event
* @param $param mixed Paremeter that will be pass to the callable
* Use an array if you have multiple parameters to pass
*
* @return void
*/
function register_hook($event, $callable, $param=NULL) {
global $hooks;
if (!array_key_exists($event, $hooks))
$hooks[$event] = array();
$hooks[$event][] = array (
'callable' => $callable,
'param' => $param,
);
}
/**
* Run triggered actions on specific event
*
* @param $event string HookEvent name
*
* @return boolean True if all triggered actions succefully runned, false otherwise
*/
function trigger_hook($event_name, $event_data=null) {
global $hooks;
$return = true;
if (isset($hooks[$event_name]) && is_array($hooks[$event_name])) {
if ($event_name == 'all')
$event = new HookEvent($event_data['event_name'], $event_data['event_data']);
else
$event = new HookEvent($event_name, $event_data);
foreach ($hooks[$event_name] as $e) {
if (is_callable($e['callable'])) {
try {
call_user_func_array($e['callable'],array($event, &$e['param']));
}
catch(Exception $e) {
Log :: exception(
$e, "An exception occured running hook ".format_callable($e['callable']).
" on event $event_name");
$return = false;
}
}
else {
Log :: error(
"The hook ".format_callable($e['callable'])." on event $event_name is not callable.");
$return = false;
}
}
}
else
Log :: debug("No hook registered for event $event_name.");
// Handle 'all' event
if ($event_name != 'all') {
trigger_hook (
'all',
array (
'event_name' => $event_name,
'event_data' => $event_data,
)
);
}
return $return;
}
class HookEvent implements JsonSerializable {
private $name;
private $data;
function __construct($name, $data) {
$this -> name = $name;
$this -> data = $data;
}
function __get($key) {
if ($key == 'name')
return $this -> name;
elseif ($key == 'data')
return $this -> data;
elseif (is_array($this -> data) && array_key_exists($key, $this -> data))
return $this -> data[$key];
return null;
}
public function jsonSerialize() {
return array (
'name' => $this -> name,
'data' => $this -> data,
);
}
}
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