packages/SettingsProvider/src/android/provider/settings/validators/Validator.java

/*
 * Copyright (C) 2019 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 android.provider.settings.validators;

import android.annotation.Nullable;

/**
 * Interface for a settings value validator.
 *
 * @hide
 */
public interface Validator {
    /**
     * Returns whether the input value is valid. Subclasses should handle the case where the
     * input value is {@code null}.
     */
    boolean validate(@Nullable String value);
}