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 com.android.server.wm;
  
  import android.annotation.Nullable;
  import android.app.ActivityOptions;
  import android.os.Handler;
  import android.util.ArrayMap;
  import android.view.RemoteAnimationAdapter;
  
  import com.android.server.am.ActivityManagerService;
  
  /**
   * Registry to keep track of remote animations to be run for activity starts from a certain package.
   *
   * @see ActivityManagerService#registerRemoteAnimationForNextActivityStart
   */
  class PendingRemoteAnimationRegistry {
  
      private static final long TIMEOUT_MS = 3000;
  
      private final ArrayMap<String, Entry> mEntries = new ArrayMap<>();
      private final Handler mHandler;
      private final ActivityTaskManagerService mService;
  
      PendingRemoteAnimationRegistry(ActivityTaskManagerService service, Handler handler) {
          mService = service;
          mHandler = handler;
      }
  
      /**
       * Adds a remote animation to be run for all activity starts originating from a certain package.
       */
      void addPendingAnimation(String packageName, RemoteAnimationAdapter adapter) {
          mEntries.put(packageName, new Entry(packageName, adapter));
      }
  
      /**
       * Overrides the activity options with a registered remote animation for a certain calling
       * package if such a remote animation is registered.
       */
      ActivityOptions overrideOptionsIfNeeded(String callingPackage,
              @Nullable ActivityOptions options) {
          final Entry entry = mEntries.get(callingPackage);
          if (entry == null) {
              return options;
          }
          if (options == null) {
              options = ActivityOptions.makeRemoteAnimation(entry.adapter);
          } else {
              options.setRemoteAnimationAdapter(entry.adapter);
          }
          mEntries.remove(callingPackage);
          return options;
      }
  
      private class Entry {
          final String packageName;
          final RemoteAnimationAdapter adapter;
  
          Entry(String packageName, RemoteAnimationAdapter adapter) {
              this.packageName = packageName;
              this.adapter = adapter;
              mHandler.postDelayed(() -> {
                  synchronized (mService.mGlobalLock) {
                      final Entry entry = mEntries.get(packageName);
                      if (entry == this) {
                          mEntries.remove(packageName);
                      }
                  }
              }, TIMEOUT_MS);
          }
      }
  }
  