OnAfterIBlockElementChange

init.php

<?
if(!function_exists('BXIBlockAfterSave')){
    function BXIBlockAfterSave($arFields){

        foreach (GetModuleEvents("iblock", "OnBXIBlockAfterSave", true) as $arEvent){
            ExecuteModuleEventEx($arEvent, array($arFields));
        }
    }
}

class OnAfterIBlockElementChange{
    static $EventData = [];
    static public function isNeedToHandle($eventType, $ID){
        global $APPLICATION;

        $page = $APPLICATION->GetCurPage(true);
        if(!$ID || !$eventType){
            return false;
        }
        switch ($page) {
            case "/bitrix/admin/iblock_element_edit.php": // admin detail page
            case "/bitrix/admin/iblock_subelement_edit.php":  // admin detail page SKU tab
            case "/bitrix/admin/cat_product_edit.php": // public detail page
                if(!self::$EventData[$ID]['HANDLED'] && $eventType == "OnBXIBlockAfterSave"){
                    return true;
                }
                if(!self::$EventData[$ID]['HANDLED'] && $eventType == "OnEpilog"){
                    return true;
                }
                break;
            case "/bitrix/admin/iblock_element_admin.php": // admin list page
            case "/bitrix/admin/iblock_subelement_admin.php":  // admin detail page SKU tab list action
            case "/bitrix/admin/cat_product_admin.php": // public list page (never see)
                if(!self::$EventData[$ID]['HANDLED'] && $eventType == "OnEpilog"){
                    return true;
                }
                break;
            default:
                if(!self::$EventData[$ID]['HANDLED']){
                    return true;
                }
                break;
        }
        return false;
    }

    static public function OnAfterIBlockElement(&$arFields){


        self::$EventData[$arFields["ID"]]['EVENT_DATA'] = $arFields;

        if(self::isNeedToHandle(__FUNCTION__,$arFields["ID"])){

            foreach (GetModuleEvents("iblock", "OnAfterIBlockElementChange", true) as $arEvent){
                ExecuteModuleEventEx($arEvent, array($arFields));
            }
            self::$EventData[$arFields["ID"]]['HANDLED'] = true;
            self::$EventData[$arFields["ID"]]['EVENT_DATA'] = [];
        }


        /*
        $event = new \Bitrix\Main\Event("iblock", "OnAfterIBlockElementChange",array($arFields));
        $event->send();
        if ($event->getResults()){
            foreach($event->getResults() as $evenResult){
                if($evenResult->getResultType() == \Bitrix\Main\EventResult::SUCCESS){
                    $arMacros["PRODUCTS"] = $evenResult->getParameters();
                }
            }
        }*/
    }

    static public function OnBXIBlockAfterSave($arFields){

        self::$EventData[$arFields["ID"]]['EVENT_DATA'] = $arFields;

        if(self::isNeedToHandle(__FUNCTION__,$arFields["ID"])){
            foreach (GetModuleEvents("iblock", "OnAfterIBlockElementChange", true) as $arEvent){
                ExecuteModuleEventEx($arEvent, array($arFields));
            }
            self::$EventData[$arFields["ID"]]['HANDLED'] = true;
            self::$EventData[$arFields["ID"]]['EVENT_DATA'] = [];
        }
    }
    static public function OnEpilog(){

        foreach(self::$EventData as $ID => $arData){
            $arFields = $arData['EVENT_DATA'];
            // ID important //$arFields empty if previously handled
            if(self::isNeedToHandle(__FUNCTION__,$ID)){
                foreach (GetModuleEvents("iblock", "OnAfterIBlockElementChange", true) as $arEvent){
                    ExecuteModuleEventEx($arEvent, array($arFields));
                }
                self::$EventData[$arFields["ID"]]['HANDLED'] = true;
                self::$EventData[$arFields["ID"]]['EVENT_DATA'] = [];
            }
        }

    }
}

AddEventHandler("iblock", "OnBXIBlockAfterSave",["OnAfterIBlockElementChange","OnBXIBlockAfterSave"]);
AddEventHandler("iblock", "OnAfterIBlockElementUpdate",["OnAfterIBlockElementChange","OnAfterIBlockElement"]);
AddEventHandler("iblock", "OnAfterIBlockElementAdd",["OnAfterIBlockElementChange","OnAfterIBlockElement"]);
AddEventHandler("main", "OnEpilog",["OnAfterIBlockElementChange","OnEpilog"]);


AddEventHandler("iblock", "OnAfterIBlockElementChange","test");
function test($arFields){
    //pre('OnAfterIBlockElementChange');
    //pre($arFields);
    //logto($arFields,99);

}