Merge "feat(#AlwaysOnMagnifier): Add feature flag for always on magnification"

/*

 * Copyright (C) 2023 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.accessibility.magnification;

import android.provider.DeviceConfig;

import com.android.internal.annotations.VisibleForTesting;

/**

 * Encapsulates the feature flags for always on magnification. {@see DeviceConfig}

 *

 * @hide

 */

public class AlwaysOnMagnificationFeatureFlag {

    private static final String NAMESPACE = DeviceConfig.NAMESPACE_WINDOW_MANAGER;

    private static final String FEATURE_NAME_ENABLE_ALWAYS_ON_MAGNIFICATION =

            "AlwaysOnMagnifier__enable_always_on_magnifier";

    private AlwaysOnMagnificationFeatureFlag() {}

    /** Returns true if the feature flag is enabled for always on magnification */

    public static boolean isAlwaysOnMagnificationEnabled() {

        return DeviceConfig.getBoolean(

                NAMESPACE,

                FEATURE_NAME_ENABLE_ALWAYS_ON_MAGNIFICATION,

                /* defaultValue= */ false);

    }

    /** Sets the feature flag. Only used for testing; requires shell permissions. */

    @VisibleForTesting

    public static boolean setAlwaysOnMagnificationEnabled(boolean isEnabled) {

        return DeviceConfig.setProperty(

                NAMESPACE,

                FEATURE_NAME_ENABLE_ALWAYS_ON_MAGNIFICATION,

                Boolean.toString(isEnabled),

                /* makeDefault= */ false);

    }

}