text: /*
   * Copyright (C) 2020 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.display;
  
  import android.annotation.Nullable;
  import android.hardware.display.DisplayManagerGlobal;
  import android.view.DisplayInfo;
  
  /**
   * Class for wrapping access of DisplayInfo objects by LogicalDisplay so that we can appropriately
   * invalidate caches when they change.
   */
  public class DisplayInfoProxy {
      private DisplayInfo mInfo;
  
      public DisplayInfoProxy(@Nullable DisplayInfo info) {
          mInfo = info;
      }
  
      /**
       * Set the current {@link DisplayInfo}.
       *
       * The also automatically invalidates the display info caches across the entire system.
       * @param info the new {@link DisplayInfo}.
       */
      public void set(@Nullable DisplayInfo info) {
          mInfo = info;
          DisplayManagerGlobal.invalidateLocalDisplayInfoCaches();
      }
  
      /**
       * Returns the current {@link DisplayInfo}.
       *
       * This info <b>must</b> be treated as immutable. Modifying the returned object is undefined
       * behavior that <b>will</b> result in inconsistent states across the system.
       *
       * @return the current {@link DisplayInfo}
       */
      @Nullable
      public DisplayInfo get() {
          return mInfo;
      }
  }
  