CIMMessenger::StartWriting

static function StartWriting($dialogId, $userId = false, $userName = "", $byEvent = false, $linesSilentMode = false)
{
	$userId = intval($userId);
	if ($userId <= 0)
	{
		global $USER;
		$userId = intval($USER->GetID());
	}

	if (mb_substr($dialogId, 0, 4) == 'chat')
	{
	}
	else if ($dialogId == $userId)
	{
		return false;
	}
	else
	{
		$dialogId = intval($dialogId);
	}
	if (!$userName)
	{
		$userName = BitrixImUser::getInstance($userId)->getFullName();
	}

	if ($userId > 0 && $dialogId <> '' && CModule::IncludeModule("pull"))
	{
		$chat = Array();
		$relation = Array();
		if (mb_substr($dialogId, 0, 4) == 'chat')
		{
			$orm = BitrixImModelChatTable::getById(mb_substr($dialogId, 4));
			$chat = $orm->fetch();

			$arRelation = CIMChat::GetRelationById(mb_substr($dialogId, 4), false, true, false);
			$relation = $arRelation;

			if ($chat['ENTITY_TYPE'] != 'LIVECHAT' && !isset($arRelation[$userId]))
			{
				return false;
			}

			unset($arRelation[$userId]);

			$pullMessage = Array(
				'module_id' => 'im',
				'command' => 'startWriting',
				'expiry' => 60,
				'params' => Array(
					'dialogId' => $dialogId,
					'userId' => $userId,
					'userName' => $userName
				),
				'extra' => BitrixImCommon::getPullExtra()
			);

			$chatId = $chat['ID'];
			$entityType = $chat['ENTITY_TYPE'];
			$entityId = $chat['ENTITY_ID'];
			if ($chat['ENTITY_TYPE'] == 'LINES')
			{
				foreach ($arRelation as $rel)
				{
					if ($rel["EXTERNAL_AUTH_ID"] == 'imconnector')
					{
						unset($arRelation[$rel["USER_ID"]]);
					}
				}
			}
			BitrixPullEvent::add(array_keys($arRelation), $pullMessage);

			if ($chat['TYPE'] == IM_MESSAGE_OPEN || $chat['TYPE'] == IM_MESSAGE_OPEN_LINE)
			{
				CPullWatch::AddToStack('IM_PUBLIC_'.$chatId, $pullMessage);
			}
		}
		else if (intval($dialogId) > 0)
		{
			BitrixPullEvent::add($dialogId, Array(
				'module_id' => 'im',
				'command' => 'startWriting',
				'expiry' => 60,
				'params' => Array(
					'dialogId' => $userId,
					'userId' => $userId,
					'userName' => $userName
				),
				'extra' => BitrixImCommon::getPullExtra()
			));
		}

		foreach(GetModuleEvents("im", "OnStartWriting", true) as $arEvent)
		{
			ExecuteModuleEventEx($arEvent, array(array(
				'DIALOG_ID' => $dialogId,
				'CHAT' => $chat,
				'RELATION' => $relation,
				'USER_ID' => $userId,
				'USER_NAME' => $userName,
				'BY_EVENT' => $byEvent,
				'LINES_SILENT_MODE' => $linesSilentMode
			)));
		}

		return true;
	}
	return false;
}