content: /*
   * Copyright (C) 2018 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.view;
  
  import static android.app.WindowConfiguration.ACTIVITY_TYPE_UNDEFINED;
  
  import android.annotation.Nullable;
  import android.annotation.UnsupportedAppUsage;
  import android.app.WindowConfiguration;
  import android.app.WindowConfiguration.ActivityType;
  import android.os.Parcel;
  import android.os.Parcelable;
  import android.util.ArraySet;
  import android.util.SparseArray;
  import android.view.WindowManager.TransitionType;
  
  /**
   * Defines which animation types should be overridden by which remote animation.
   *
   * @hide
   */
  public class RemoteAnimationDefinition implements Parcelable {
  
      private final SparseArray<RemoteAnimationAdapterEntry> mTransitionAnimationMap;
  
      @UnsupportedAppUsage
      public RemoteAnimationDefinition() {
          mTransitionAnimationMap = new SparseArray<>();
      }
  
      /**
       * Registers a remote animation for a specific transition.
       *
       * @param transition The transition type. Must be one of WindowManager.TRANSIT_* values.
       * @param activityTypeFilter The remote animation only runs if an activity with type of this
       *                           parameter is involved in the transition.
       * @param adapter The adapter that described how to run the remote animation.
       */
      @UnsupportedAppUsage
      public void addRemoteAnimation(@TransitionType int transition,
              @ActivityType int activityTypeFilter, RemoteAnimationAdapter adapter) {
          mTransitionAnimationMap.put(transition,
                  new RemoteAnimationAdapterEntry(adapter, activityTypeFilter));
      }
  
      /**
       * Registers a remote animation for a specific transition without defining an activity type
       * filter.
       *
       * @param transition The transition type. Must be one of WindowManager.TRANSIT_* values.
       * @param adapter The adapter that described how to run the remote animation.
       */
      @UnsupportedAppUsage
      public void addRemoteAnimation(@TransitionType int transition, RemoteAnimationAdapter adapter) {
          addRemoteAnimation(transition, ACTIVITY_TYPE_UNDEFINED, adapter);
      }
  
      /**
       * Checks whether a remote animation for specific transition is defined.
       *
       * @param transition The transition type. Must be one of WindowManager.TRANSIT_* values.
       * @param activityTypes The set of activity types of activities that are involved in the
       *                      transition. Will be used for filtering.
       * @return Whether this definition has defined a remote animation for the specified transition.
       */
      public boolean hasTransition(@TransitionType int transition, ArraySet<Integer> activityTypes) {
          return getAdapter(transition, activityTypes) != null;
      }
  
      /**
       * Retrieves the remote animation for a specific transition.
       *
       * @param transition The transition type. Must be one of WindowManager.TRANSIT_* values.
       * @param activityTypes The set of activity types of activities that are involved in the
       *                      transition. Will be used for filtering.
       * @return The remote animation adapter for the specified transition.
       */
      public @Nullable RemoteAnimationAdapter getAdapter(@TransitionType int transition,
              ArraySet<Integer> activityTypes) {
          final RemoteAnimationAdapterEntry entry = mTransitionAnimationMap.get(transition);
          if (entry == null) {
              return null;
          }
          if (entry.activityTypeFilter == ACTIVITY_TYPE_UNDEFINED
                  || activityTypes.contains(entry.activityTypeFilter)) {
              return entry.adapter;
          } else {
              return null;
          }
      }
  
      public RemoteAnimationDefinition(Parcel in) {
          final int size = in.readInt();
          mTransitionAnimationMap = new SparseArray<>(size);
          for (int i = 0; i < size; i++) {
              final int transition = in.readInt();
              final RemoteAnimationAdapterEntry entry = in.readTypedObject(
                      RemoteAnimationAdapterEntry.CREATOR);
              mTransitionAnimationMap.put(transition, entry);
          }
      }
  
      /**
       * To be called by system_server to keep track which pid is running the remote animations inside
       * this definition.
       */
      public void setCallingPidUid(int pid, int uid) {
          for (int i = mTransitionAnimationMap.size() - 1; i >= 0; i--) {
              mTransitionAnimationMap.valueAt(i).adapter.setCallingPidUid(pid, uid);
          }
      }
  
      @Override
      public int describeContents() {
          return 0;
      }
  
      @Override
      public void writeToParcel(Parcel dest, int flags) {
          final int size = mTransitionAnimationMap.size();
          dest.writeInt(size);
          for (int i = 0; i < size; i++) {
              dest.writeInt(mTransitionAnimationMap.keyAt(i));
              dest.writeTypedObject(mTransitionAnimationMap.valueAt(i), flags);
          }
      }
  
      public static final @android.annotation.NonNull Creator<RemoteAnimationDefinition> CREATOR =
              new Creator<RemoteAnimationDefinition>() {
          public RemoteAnimationDefinition createFromParcel(Parcel in) {
              return new RemoteAnimationDefinition(in);
          }
  
          public RemoteAnimationDefinition[] newArray(int size) {
              return new RemoteAnimationDefinition[size];
          }
      };
  
      private static class RemoteAnimationAdapterEntry implements Parcelable {
  
          final RemoteAnimationAdapter adapter;
  
          /**
           * Only run the transition if one of the activities matches the filter.
           * {@link WindowConfiguration.ACTIVITY_TYPE_UNDEFINED} means no filter
           */
          @ActivityType final int activityTypeFilter;
  
          RemoteAnimationAdapterEntry(RemoteAnimationAdapter adapter, int activityTypeFilter) {
              this.adapter = adapter;
              this.activityTypeFilter = activityTypeFilter;
          }
  
          private RemoteAnimationAdapterEntry(Parcel in) {
              adapter = in.readParcelable(RemoteAnimationAdapter.class.getClassLoader());
              activityTypeFilter = in.readInt();
          }
  
          @Override
          public void writeToParcel(Parcel dest, int flags) {
              dest.writeParcelable(adapter, flags);
              dest.writeInt(activityTypeFilter);
          }
  
          @Override
          public int describeContents() {
              return 0;
          }
  
          private static final @android.annotation.NonNull Creator<RemoteAnimationAdapterEntry> CREATOR
                  = new Creator<RemoteAnimationAdapterEntry>() {
  
              @Override
              public RemoteAnimationAdapterEntry createFromParcel(Parcel in) {
                  return new RemoteAnimationAdapterEntry(in);
              }
  
              @Override
              public RemoteAnimationAdapterEntry[] newArray(int size) {
                  return new RemoteAnimationAdapterEntry[size];
              }
          };
      }
  }
  