| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.devicestate; |
| |
| import static android.hardware.devicestate.DeviceStateManager.MAXIMUM_DEVICE_STATE; |
| import static android.hardware.devicestate.DeviceStateManager.MINIMUM_DEVICE_STATE; |
| |
| import android.annotation.IntDef; |
| import android.annotation.IntRange; |
| import android.annotation.NonNull; |
| import android.hardware.devicestate.DeviceStateManager; |
| |
| import com.android.internal.util.Preconditions; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.util.Objects; |
| |
| /** |
| * A state of the device defined by the {@link DeviceStateProvider} and managed by the |
| * {@link DeviceStateManagerService}. |
| * <p> |
| * Device state is an abstract concept that allows mapping the current state of the device to the |
| * state of the system. This is useful for variable-state devices, like foldable or rollable |
| * devices, that can be configured by users into differing hardware states, which each may have a |
| * different expected use case. |
| * |
| * @see DeviceStateProvider |
| * @see DeviceStateManagerService |
| */ |
| public final class DeviceState { |
| /** |
| * Flag that indicates override requests should be cancelled when this device state becomes the |
| * base device state. |
| */ |
| public static final int FLAG_CANCEL_OVERRIDE_REQUESTS = 1 << 0; |
| |
| /** |
| * Flag that indicates this device state is inaccessible for applications to be placed in. This |
| * could be a device-state where the {@link DEFAULT_DISPLAY} is not enabled. |
| */ |
| public static final int FLAG_APP_INACCESSIBLE = 1 << 1; |
| |
| /** |
| * Some device states can be both entered through a physical configuration as well as emulation |
| * through {@link DeviceStateManager#requestState}, while some states can only be entered |
| * through emulation and have no physical configuration to match. |
| * |
| * This flag indicates that the corresponding state can only be entered through emulation. |
| */ |
| public static final int FLAG_EMULATED_ONLY = 1 << 2; |
| |
| /** |
| * This flag indicates that the corresponding state should be automatically canceled when the |
| * requesting app is no longer on top. The app is considered not on top when (1) the top |
| * activity in the system is from a different app, (2) the device is in sleep mode, or |
| * (3) the keyguard shows up. |
| */ |
| public static final int FLAG_CANCEL_WHEN_REQUESTER_NOT_ON_TOP = 1 << 3; |
| |
| /** |
| * This flag indicates that the corresponding state should be disabled when the device is |
| * overheating and reaching the critical status. |
| */ |
| public static final int FLAG_UNSUPPORTED_WHEN_THERMAL_STATUS_CRITICAL = 1 << 4; |
| |
| /** |
| * This flag indicates that the corresponding state should be disabled when power save mode |
| * is enabled. |
| */ |
| public static final int FLAG_UNSUPPORTED_WHEN_POWER_SAVE_MODE = 1 << 5; |
| |
| /** @hide */ |
| @IntDef(prefix = {"FLAG_"}, flag = true, value = { |
| FLAG_CANCEL_OVERRIDE_REQUESTS, |
| FLAG_APP_INACCESSIBLE, |
| FLAG_EMULATED_ONLY, |
| FLAG_CANCEL_WHEN_REQUESTER_NOT_ON_TOP, |
| FLAG_UNSUPPORTED_WHEN_THERMAL_STATUS_CRITICAL, |
| FLAG_UNSUPPORTED_WHEN_POWER_SAVE_MODE |
| }) |
| @Retention(RetentionPolicy.SOURCE) |
| public @interface DeviceStateFlags {} |
| |
| /** Unique identifier for the device state. */ |
| @IntRange(from = MINIMUM_DEVICE_STATE, to = MAXIMUM_DEVICE_STATE) |
| private final int mIdentifier; |
| |
| /** String description of the device state. */ |
| @NonNull |
| private final String mName; |
| |
| @DeviceStateFlags |
| private final int mFlags; |
| |
| public DeviceState( |
| @IntRange(from = MINIMUM_DEVICE_STATE, to = MAXIMUM_DEVICE_STATE) int identifier, |
| @NonNull String name, |
| @DeviceStateFlags int flags) { |
| Preconditions.checkArgumentInRange(identifier, MINIMUM_DEVICE_STATE, MAXIMUM_DEVICE_STATE, |
| "identifier"); |
| |
| mIdentifier = identifier; |
| mName = name; |
| mFlags = flags; |
| } |
| |
| /** Returns the unique identifier for the device state. */ |
| @IntRange(from = MINIMUM_DEVICE_STATE, to = MAXIMUM_DEVICE_STATE) |
| public int getIdentifier() { |
| return mIdentifier; |
| } |
| |
| /** Returns a string description of the device state. */ |
| @NonNull |
| public String getName() { |
| return mName; |
| } |
| |
| @DeviceStateFlags |
| public int getFlags() { |
| return mFlags; |
| } |
| |
| @Override |
| public String toString() { |
| return "DeviceState{" + "identifier=" + mIdentifier + ", name='" + mName + '\'' |
| + ", app_accessible=" + !hasFlag(FLAG_APP_INACCESSIBLE) |
| + ", cancel_when_requester_not_on_top=" |
| + hasFlag(FLAG_CANCEL_WHEN_REQUESTER_NOT_ON_TOP) |
| + "}"; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| DeviceState that = (DeviceState) o; |
| return mIdentifier == that.mIdentifier |
| && Objects.equals(mName, that.mName) |
| && mFlags == that.mFlags; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(mIdentifier, mName, mFlags); |
| } |
| |
| /** Checks if a specific flag is set |
| */ |
| public boolean hasFlag(int flagToCheckFor) { |
| return (mFlags & flagToCheckFor) == flagToCheckFor; |
| } |
| } |