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<?php
/*-------------------------------------------------------
*
* LiveStreet Engine Social Networking
* Copyright © 2008 Mzhelskiy Maxim
*
*--------------------------------------------------------
*
* Official site: www.livestreet.ru
* Contact e-mail: rus.engine@gmail.com
*
* GNU General Public License, version 2:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
*
---------------------------------------------------------
*/
/**
* Модуль поддержки хуков(hooks)
*
*/
class ModuleHook extends Module {
/**
* Содержит список хуков
*
* @var array( 'name' => array(
* array(
* 'type' => 'module' | 'hook' | 'function',
* 'callback' => 'callback_name',
* 'priority' => 1,
* 'params' => array()
* ),
* ),
* )
*/
protected $aHooks=array();
/**
* Инициализация модуля
*
*/
public function Init() {
}
public function Add($sName,$sType,$sCallBack,$iPriority=1,$aParams=array()) {
$sName=strtolower($sName);
$sType=strtolower($sType);
if (!in_array($sType,array('module','hook','function'))) {
return false;
}
$this->aHooks[$sName][]=array('type'=>$sType,'callback'=>$sCallBack,'params'=>$aParams,'priority'=>(int)$iPriority);
}
public function AddExecModule($sName,$sCallBack,$iPriority=1) {
return $this->Add($sName,'module',$sCallBack,$iPriority);
}
public function AddExecFunction($sName,$sCallBack,$iPriority=1) {
return $this->Add($sName,'function',$sCallBack,$iPriority);
}
public function AddExecHook($sName,$sCallBack,$iPriority=1,$aParams=array()) {
return $this->Add($sName,'hook',$sCallBack,$iPriority,$aParams);
}
public function AddDelegateModule($sName,$sCallBack,$iPriority=1) {
return $this->Add($sName,'module',$sCallBack,$iPriority,array('delegate'=>true));
}
public function AddDelegateFunction($sName,$sCallBack,$iPriority=1) {
return $this->Add($sName,'function',$sCallBack,$iPriority,array('delegate'=>true));
}
public function AddDelegateHook($sName,$sCallBack,$iPriority=1,$aParams=array()) {
$aParams['delegate']=true;
return $this->Add($sName,'hook',$sCallBack,$iPriority,$aParams);
}
public function Run($sName,&$aVars=array()) {
$result=array();
$sName=strtolower($sName);
$bTemplateHook=strpos($sName,'template_')===0 ? true : false;
if (isset($this->aHooks[$sName])) {
$aHookNum=array();
$aHookNumDelegate=array();
/**
* Все хуки делим на обычные(exec) и делигирующие(delegate)
*/
for ($i=0;$i<count($this->aHooks[$sName]);$i++) {
if (isset($this->aHooks[$sName][$i]['params']['delegate']) and $this->aHooks[$sName][$i]['params']['delegate']) {
$aHookNumDelegate[$i]=$this->aHooks[$sName][$i]['priority'];
} else {
$aHookNum[$i]=$this->aHooks[$sName][$i]['priority'];
}
}
arsort($aHookNum,SORT_NUMERIC);
arsort($aHookNumDelegate,SORT_NUMERIC);
/**
* Сначала запускаем на выполнение простые
*/
foreach ($aHookNum as $iKey => $iPr) {
$aHook=$this->aHooks[$sName][$iKey];
if ($bTemplateHook) {
/**
* Если это шаблонных хук то сохраняем результат
*/
$result['template_result'][]=$this->RunType($aHook,$aVars);
} else {
$this->RunType($aHook,$aVars);
}
}
/**
* Теперь запускаем делигирующие
* Делегирующий хук должен вернуть результат в формате:
*
*/
foreach ($aHookNumDelegate as $iKey => $iPr) {
$aHook=$this->aHooks[$sName][$iKey];
$result=array(
'delegate_result'=>$this->RunType($aHook,$aVars)
);
/**
* На данный момент только один хук может быть делегирующим
*/
break;
}
}
return $result;
}
protected function RunType($aHook,&$aVars) {
$result=null;
switch ($aHook['type']) {
case 'module':
$result=call_user_func_array(array($this,$aHook['callback']),array(&$aVars));
break;
case 'function':
$result=call_user_func_array($aHook['callback'],array(&$aVars));
break;
case 'hook':
if (isset($aHook['params']['sClassName']) and class_exists($aHook['params']['sClassName'])) {
$oHook=new $aHook['params']['sClassName'];
$result=call_user_func_array(array($oHook,$aHook['callback']),array(&$aVars));
}
break;
default:
break;
}
return $result;
}
}
?>