content: /*
   * Copyright 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.app.servertransaction;
  
  import static android.os.Trace.TRACE_TAG_ACTIVITY_MANAGER;
  
  import android.app.ActivityTaskManager;
  import android.app.ClientTransactionHandler;
  import android.os.IBinder;
  import android.os.Parcel;
  import android.os.RemoteException;
  import android.os.Trace;
  
  /**
   * Top resumed activity changed callback.
   * @hide
   */
  public class TopResumedActivityChangeItem extends ClientTransactionItem {
  
      private boolean mOnTop;
  
      @Override
      public void execute(ClientTransactionHandler client, IBinder token,
              PendingTransactionActions pendingActions) {
          Trace.traceBegin(TRACE_TAG_ACTIVITY_MANAGER, "topResumedActivityChangeItem");
          client.handleTopResumedActivityChanged(token, mOnTop, "topResumedActivityChangeItem");
          Trace.traceEnd(TRACE_TAG_ACTIVITY_MANAGER);
      }
  
      @Override
      public void postExecute(ClientTransactionHandler client, IBinder token,
              PendingTransactionActions pendingActions) {
          if (mOnTop) {
              return;
          }
  
          // The loss of top resumed state can always be reported immediately in postExecute
          // because only three cases are possible:
          // 1. Activity is in RESUMED state now and it just handled the callback in #execute().
          // 2. Activity wasn't RESUMED yet, which means that it didn't receive the top state yet.
          // 3. Activity is PAUSED or in other lifecycle state after PAUSED. In this case top resumed
          // state loss was already called right before pausing.
          try {
              ActivityTaskManager.getService().activityTopResumedStateLost();
          } catch (RemoteException ex) {
              throw ex.rethrowFromSystemServer();
          }
      }
  
  
      // ObjectPoolItem implementation
  
      private TopResumedActivityChangeItem() {}
  
      /** Obtain an instance initialized with provided params. */
      public static TopResumedActivityChangeItem obtain(boolean onTop) {
          TopResumedActivityChangeItem instance =
                  ObjectPool.obtain(TopResumedActivityChangeItem.class);
          if (instance == null) {
              instance = new TopResumedActivityChangeItem();
          }
          instance.mOnTop = onTop;
  
          return instance;
      }
  
      @Override
      public void recycle() {
          mOnTop = false;
          ObjectPool.recycle(this);
      }
  
  
      // Parcelable implementation
  
      /** Write to Parcel. */
      @Override
      public void writeToParcel(Parcel dest, int flags) {
          dest.writeBoolean(mOnTop);
      }
  
      /** Read from Parcel. */
      private TopResumedActivityChangeItem(Parcel in) {
          mOnTop = in.readBoolean();
      }
  
      public static final @android.annotation.NonNull Creator<TopResumedActivityChangeItem> CREATOR =
              new Creator<TopResumedActivityChangeItem>() {
                  public TopResumedActivityChangeItem createFromParcel(Parcel in) {
                      return new TopResumedActivityChangeItem(in);
                  }
  
                  public TopResumedActivityChangeItem[] newArray(int size) {
                      return new TopResumedActivityChangeItem[size];
                  }
              };
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
          final TopResumedActivityChangeItem other = (TopResumedActivityChangeItem) o;
          return mOnTop == other.mOnTop;
      }
  
      @Override
      public int hashCode() {
          int result = 17;
          result = 31 * result + (mOnTop ? 1 : 0);
          return result;
      }
  
      @Override
      public String toString() {
          return "TopResumedActivityChangeItem{onTop=" + mOnTop + "}";
      }
  }
  