src/com/android/camera/async/Updatables.java

/*
 * Copyright (C) 2014 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.camera.async;

import javax.annotation.Nonnull;

/**
 * This provides empty, NoOp implementation of generic updateable objects.
 */
public final class Updatables {
    private static final Updatable NOOP = new Updatable() {
        @Override
        public void update(@Nonnull Object o) {
            // Do nothing.
        }
    };

    private Updatables() {
    }

    public static <T> Updatable<T> getNoOp() {
        return NOOP;
    }
}