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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.content.res;
     18 
     19 import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
     20 
     21 import android.util.SparseArray;
     22 
     23 import java.io.IOException;
     24 import java.io.InputStream;
     25 
     26 /**
     27  * Delegate used to provide implementation of a select few native methods of {@link AssetManager}
     28  * <p/>
     29  * Through the layoutlib_create tool, the original native methods of AssetManager have been replaced
     30  * by calls to methods of the same name in this delegate class.
     31  *
     32  */
     33 public class AssetManager_Delegate {
     34 
     35     @LayoutlibDelegate
     36     public static InputStream open(AssetManager mgr, String fileName) throws IOException {
     37         return mgr.open_Original(fileName);
     38     }
     39 
     40     @LayoutlibDelegate
     41     public static InputStream open(AssetManager mgr, String fileName, int accessMode)
     42             throws IOException {
     43         if (!(mgr instanceof BridgeAssetManager)) {
     44             return mgr.open_Original(fileName, accessMode);
     45         }
     46         return ((BridgeAssetManager) mgr).getAssetRepository().openAsset(fileName, accessMode);
     47     }
     48 
     49     @LayoutlibDelegate
     50     /*package*/ static long newTheme(AssetManager manager) {
     51         return Resources_Theme_Delegate.getDelegateManager()
     52                 .addNewDelegate(new Resources_Theme_Delegate());
     53     }
     54 
     55     @LayoutlibDelegate
     56     /*package*/ static void deleteTheme(AssetManager manager, long theme) {
     57         Resources_Theme_Delegate.getDelegateManager().removeJavaReferenceFor(theme);
     58     }
     59 
     60     @LayoutlibDelegate
     61     /*package*/ static SparseArray<String> getAssignedPackageIdentifiers(AssetManager manager) {
     62         return new SparseArray<>();
     63     }
     64 }
     65