content: /**
   * Copyright 2018 Alibaba Group
   *
   * 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.alibaba.android.bindingx.core;
  
  import android.support.annotation.NonNull;
  
  import java.lang.ref.WeakReference;
  
  public class WeakRunnable implements Runnable {
      private final WeakReference<Runnable> mDelegateRunnable;
  
      public WeakRunnable(@NonNull Runnable runnable) {
          mDelegateRunnable = new WeakReference<>(runnable);
      }
  
      @Override
      public void run() {
          Runnable runnable = mDelegateRunnable.get();
          if (runnable != null) {
              runnable.run();
          }
      }
  }