content: /*
   * Copyright 2017 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.app.ActivityThread.DEBUG_ORDER;
  
  import android.app.ActivityThread;
  import android.app.ClientTransactionHandler;
  import android.app.ResultInfo;
  import android.os.IBinder;
  import android.os.Parcel;
  import android.os.Trace;
  import android.util.MergedConfiguration;
  import android.util.Slog;
  
  import com.android.internal.content.ReferrerIntent;
  
  import java.util.List;
  import java.util.Objects;
  
  /**
   * Activity relaunch callback.
   * @hide
   */
  public class ActivityRelaunchItem extends ClientTransactionItem {
  
      private static final String TAG = "ActivityRelaunchItem";
  
      private List<ResultInfo> mPendingResults;
      private List<ReferrerIntent> mPendingNewIntents;
      private int mConfigChanges;
      private MergedConfiguration mConfig;
      private boolean mPreserveWindow;
  
      /**
       * A record that was properly configured for relaunch. Execution will be cancelled if not
       * initialized after {@link #preExecute(ClientTransactionHandler, IBinder)}.
       */
      private ActivityThread.ActivityClientRecord mActivityClientRecord;
  
      @Override
      public void preExecute(ClientTransactionHandler client, IBinder token) {
          mActivityClientRecord = client.prepareRelaunchActivity(token, mPendingResults,
                  mPendingNewIntents, mConfigChanges, mConfig, mPreserveWindow);
      }
  
      @Override
      public void execute(ClientTransactionHandler client, IBinder token,
              PendingTransactionActions pendingActions) {
          if (mActivityClientRecord == null) {
              if (DEBUG_ORDER) Slog.d(TAG, "Activity relaunch cancelled");
              return;
          }
          Trace.traceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "activityRestart");
          client.handleRelaunchActivity(mActivityClientRecord, pendingActions);
          Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER);
      }
  
      @Override
      public void postExecute(ClientTransactionHandler client, IBinder token,
              PendingTransactionActions pendingActions) {
          client.reportRelaunch(token, pendingActions);
      }
  
      // ObjectPoolItem implementation
  
      private ActivityRelaunchItem() {}
  
      /** Obtain an instance initialized with provided params. */
      public static ActivityRelaunchItem obtain(List<ResultInfo> pendingResults,
              List<ReferrerIntent> pendingNewIntents, int configChanges, MergedConfiguration config,
              boolean preserveWindow) {
          ActivityRelaunchItem instance = ObjectPool.obtain(ActivityRelaunchItem.class);
          if (instance == null) {
              instance = new ActivityRelaunchItem();
          }
          instance.mPendingResults = pendingResults;
          instance.mPendingNewIntents = pendingNewIntents;
          instance.mConfigChanges = configChanges;
          instance.mConfig = config;
          instance.mPreserveWindow = preserveWindow;
  
          return instance;
      }
  
      @Override
      public void recycle() {
          mPendingResults = null;
          mPendingNewIntents = null;
          mConfigChanges = 0;
          mConfig = null;
          mPreserveWindow = false;
          mActivityClientRecord = null;
          ObjectPool.recycle(this);
      }
  
  
      // Parcelable implementation
  
      /** Write to Parcel. */
      @Override
      public void writeToParcel(Parcel dest, int flags) {
          dest.writeTypedList(mPendingResults, flags);
          dest.writeTypedList(mPendingNewIntents, flags);
          dest.writeInt(mConfigChanges);
          dest.writeTypedObject(mConfig, flags);
          dest.writeBoolean(mPreserveWindow);
      }
  
      /** Read from Parcel. */
      private ActivityRelaunchItem(Parcel in) {
          mPendingResults = in.createTypedArrayList(ResultInfo.CREATOR);
          mPendingNewIntents = in.createTypedArrayList(ReferrerIntent.CREATOR);
          mConfigChanges = in.readInt();
          mConfig = in.readTypedObject(MergedConfiguration.CREATOR);
          mPreserveWindow = in.readBoolean();
      }
  
      public static final @android.annotation.NonNull Creator<ActivityRelaunchItem> CREATOR =
              new Creator<ActivityRelaunchItem>() {
                  public ActivityRelaunchItem createFromParcel(Parcel in) {
                      return new ActivityRelaunchItem(in);
                  }
  
                  public ActivityRelaunchItem[] newArray(int size) {
                      return new ActivityRelaunchItem[size];
                  }
              };
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
          final ActivityRelaunchItem other = (ActivityRelaunchItem) o;
          return Objects.equals(mPendingResults, other.mPendingResults)
                  && Objects.equals(mPendingNewIntents, other.mPendingNewIntents)
                  && mConfigChanges == other.mConfigChanges && Objects.equals(mConfig, other.mConfig)
                  && mPreserveWindow == other.mPreserveWindow;
      }
  
      @Override
      public int hashCode() {
          int result = 17;
          result = 31 * result + Objects.hashCode(mPendingResults);
          result = 31 * result + Objects.hashCode(mPendingNewIntents);
          result = 31 * result + mConfigChanges;
          result = 31 * result + Objects.hashCode(mConfig);
          result = 31 * result + (mPreserveWindow ? 1 : 0);
          return result;
      }
  
      @Override
      public String toString() {
          return "ActivityRelaunchItem{pendingResults=" + mPendingResults
                  + ",pendingNewIntents=" + mPendingNewIntents + ",configChanges="  + mConfigChanges
                  + ",config=" + mConfig + ",preserveWindow" + mPreserveWindow + "}";
      }
  }
  