1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 5 * except in compliance with the License. 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 distributed under the 10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 11 * KIND, either express or implied. See the License for the specific language governing 12 * permissions and limitations under the License. 13 */ 14 15 package com.android.systemui.statusbar.policy; 16 17 import com.android.systemui.Dumpable; 18 import com.android.systemui.statusbar.policy.FlashlightController.FlashlightListener; 19 20 public interface FlashlightController extends CallbackController<FlashlightListener>, Dumpable { 21 22 boolean hasFlashlight(); 23 void setFlashlight(boolean newState); 24 boolean isAvailable(); 25 boolean isEnabled(); 26 27 public interface FlashlightListener { 28 29 /** 30 * Called when the flashlight was turned off or on. 31 * @param enabled true if the flashlight is currently turned on. 32 */ 33 void onFlashlightChanged(boolean enabled); 34 35 36 /** 37 * Called when there is an error that turns the flashlight off. 38 */ 39 void onFlashlightError(); 40 41 /** 42 * Called when there is a change in availability of the flashlight functionality 43 * @param available true if the flashlight is currently available. 44 */ 45 void onFlashlightAvailabilityChanged(boolean available); 46 } 47 } 48
