1/* 2 * Copyright (c) 2021-2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16import {AsyncCallback} from './basic'; 17 18/** 19 * Provides interfaces to manage power. 20 * 21 * @syscap SystemCapability.PowerManager.PowerManager.Core 22 * @since 7 23 */ 24declare namespace power { 25 /** 26 * Shuts down the system. 27 * 28 * <p>This method requires the ohos.permission.REBOOT permission. 29 * 30 * @param reason Indicates the shutdown reason. 31 * @permission ohos.permission.REBOOT 32 * @systemapi 33 * @since 7 34 */ 35 function shutdownDevice(reason: string): void; 36 37 /** 38 * Restarts the system. 39 * 40 * <p>This method requires the ohos.permission.REBOOT permission. 41 * 42 * @param reason Indicates the restart reason. For example, "updater" indicates entering the updater mode 43 * after the restart. If the parameter is not specified, the system enters the normal mode after the restart. 44 * @permission ohos.permission.REBOOT 45 * @since 7 46 */ 47 function rebootDevice(reason: string): void; 48 49 /** 50 * Checks whether the screen of a device is on or off. 51 * 52 * @return Returns true if the screen is on; returns false otherwise. 53 * @since 7 54 */ 55 function isScreenOn(callback: AsyncCallback<boolean>): void; 56 function isScreenOn(): Promise<boolean>; 57} 58export default power; 59 60