content: /*
   * Copyright (C) 2014 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.content.res;
  
  import com.android.layoutlib.bridge.impl.DelegateManager;
  import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
  
  import android.util.SparseArray;
  
  import java.io.IOException;
  import java.io.InputStream;
  
  /**
   * Delegate used to provide implementation of a select few native methods of {@link AssetManager}
   * <p/>
   * Through the layoutlib_create tool, the original native methods of AssetManager have been replaced
   * by calls to methods of the same name in this delegate class.
   *
   */
  public class AssetManager_Delegate {
  
      // ---- delegate manager ----
  
      private static final DelegateManager<AssetManager_Delegate> sManager =
              new DelegateManager<>(AssetManager_Delegate.class);
  
      public static DelegateManager<AssetManager_Delegate> getDelegateManager() {
          return sManager;
      }
  
      // ---- delegate methods. ----
  
      @LayoutlibDelegate
      /*package*/ static long nativeCreate() {
          AssetManager_Delegate delegate = new AssetManager_Delegate();
          return sManager.addNewDelegate(delegate);
      }
  
      @LayoutlibDelegate
      /*package*/ static void nativeDestroy(long ptr) {
          sManager.removeJavaReferenceFor(ptr);
      }
  
      @LayoutlibDelegate
      public static InputStream open(AssetManager mgr, String fileName) throws IOException {
          return mgr.open_Original(fileName);
      }
  
      @LayoutlibDelegate
      public static InputStream open(AssetManager mgr, String fileName, int accessMode)
              throws IOException {
          if (!(mgr instanceof BridgeAssetManager)) {
              return mgr.open_Original(fileName, accessMode);
          }
          return ((BridgeAssetManager) mgr).getAssetRepository().openAsset(fileName, accessMode);
      }
  
      @LayoutlibDelegate
      /*package*/ static long nativeThemeCreate(long ptr) {
          return Resources_Theme_Delegate.getDelegateManager()
                  .addNewDelegate(new Resources_Theme_Delegate());
      }
  
      @LayoutlibDelegate
      /*package*/ static void nativeThemeDestroy(long theme) {
          Resources_Theme_Delegate.getDelegateManager().removeJavaReferenceFor(theme);
      }
  
      @LayoutlibDelegate
      /*package*/ static SparseArray<String> getAssignedPackageIdentifiers(AssetManager manager) {
          return new SparseArray<>();
      }
  
      @LayoutlibDelegate
      /*package*/ static String[] nativeCreateIdmapsForStaticOverlaysTargetingAndroid() {
          // AssetManager requires this not to be null
          return new String[0];
      }
  }
  