services/device/public/java/src/org/chromium/device/DeviceFeatureList.java

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package org.chromium.device;

import org.chromium.base.FeatureList;
import org.chromium.base.annotations.JNINamespace;
import org.chromium.base.annotations.NativeMethods;

/**
 * Provides an API for querying the status of Device Service Features.
 */
// TODO(crbug.com/1060097): Remove/update this once a generalized FeatureList exists.
@JNINamespace("features")
public class DeviceFeatureList {
    public static final String ASYNC_SENSOR_CALLS = "AsyncSensorCalls";
    public static final String GENERIC_SENSOR_EXTRA_CLASSES = "GenericSensorExtraClasses";
    public static final String WEBAUTHN_ANDROID_CRED_MAN = "WebAuthenticationAndroidCredMan";
    public static final String WEBAUTHN_HYBRID_LINK_WITHOUT_NOTIFICATIONS =
            "WebAuthenticationHybridLinkWithoutNotifications";

    private DeviceFeatureList() {}

    /**
     * Returns whether the specified feature is enabled or not.
     *
     * Note: Features queried through this API must be added to the array
     * |kFeaturesExposedToJava| in //services/device/public/cpp/device_feature_list.cc.
     *
     * @param featureName The name of the feature to query.
     * @return Whether the feature is enabled or not.
     */
    public static boolean isEnabled(String featureName) {
        Boolean testValue = FeatureList.getTestValueForFeature(featureName);
        if (testValue != null) return testValue;
        assert FeatureList.isNativeInitialized();
        return DeviceFeatureListJni.get().isEnabled(featureName);
    }

    @NativeMethods
    interface Natives {
        boolean isEnabled(String featureName);
    }
}