content: /*
   * Copyright (C) 2016 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.webkit;
  
  import android.annotation.SystemApi;
  import android.annotation.UnsupportedAppUsage;
  import android.os.RemoteException;
  
  /**
   * @hide
   */
  @SystemApi
  public final class WebViewUpdateService {
  
      @UnsupportedAppUsage
      private WebViewUpdateService () {}
  
      /**
       * Fetch all packages that could potentially implement WebView.
       */
      public static WebViewProviderInfo[] getAllWebViewPackages() {
          IWebViewUpdateService service = getUpdateService();
          if (service == null) {
              return new WebViewProviderInfo[0];
          }
          try {
              return service.getAllWebViewPackages();
          } catch (RemoteException e) {
              throw e.rethrowFromSystemServer();
          }
      }
  
      /**
       * Fetch all packages that could potentially implement WebView and are currently valid.
       */
      public static WebViewProviderInfo[] getValidWebViewPackages() {
          IWebViewUpdateService service = getUpdateService();
          if (service == null) {
              return new WebViewProviderInfo[0];
          }
          try {
              return service.getValidWebViewPackages();
          } catch (RemoteException e) {
              throw e.rethrowFromSystemServer();
          }
      }
  
      /**
       * Used by DevelopmentSetting to get the name of the WebView provider currently in use.
       */
      public static String getCurrentWebViewPackageName() {
          IWebViewUpdateService service = getUpdateService();
          if (service == null) {
              return null;
          }
          try {
              return service.getCurrentWebViewPackageName();
          } catch (RemoteException e) {
              throw e.rethrowFromSystemServer();
          }
      }
  
      private static IWebViewUpdateService getUpdateService() {
          return WebViewFactory.getUpdateService();
      }
  }
  