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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.webkit;
     18 
     19 import android.content.pm.PackageInfo;
     20 import android.webkit.WebViewProviderInfo;
     21 import android.webkit.WebViewProviderResponse;
     22 
     23 /**
     24  * Private service to wait for the updatable WebView to be ready for use.
     25  * @hide
     26  */
     27 interface IWebViewUpdateService {
     28 
     29     /**
     30      * Used by the relro file creator to notify the service that it's done.
     31      */
     32     void notifyRelroCreationCompleted();
     33 
     34     /**
     35      * Used by WebViewFactory to block loading of WebView code until
     36      * preparations are complete. Returns the package used as WebView provider.
     37      */
     38     WebViewProviderResponse waitForAndGetProvider();
     39 
     40     /**
     41      * DevelopmentSettings uses this to notify WebViewUpdateService that a new provider has been
     42      * selected by the user. Returns the provider we end up switching to, this could be different to
     43      * the one passed as argument to this method since the Dev Setting calling this method could be
     44      * stale. I.e. the Dev setting could be letting the user choose uninstalled/disabled packages,
     45      * it would then try to update the provider to such a package while in reality the update
     46      * service would switch to another one.
     47      */
     48     String changeProviderAndSetting(String newProvider);
     49 
     50     /**
     51      * DevelopmentSettings uses this to get the current available WebView
     52      * providers (to display as choices to the user).
     53      */
     54     @UnsupportedAppUsage
     55     WebViewProviderInfo[] getValidWebViewPackages();
     56 
     57     /**
     58      * Fetch all packages that could potentially implement WebView.
     59      */
     60     WebViewProviderInfo[] getAllWebViewPackages();
     61 
     62     /**
     63      * Used by DevelopmentSetting to get the name of the WebView provider currently in use.
     64      */
     65     @UnsupportedAppUsage
     66     String getCurrentWebViewPackageName();
     67 
     68     /**
     69      * Used by public API for debugging purposes.
     70      */
     71     PackageInfo getCurrentWebViewPackage();
     72 
     73     /**
     74      * Used by Settings to determine whether multiprocess is enabled.
     75      */
     76     boolean isMultiProcessEnabled();
     77 
     78     /**
     79      * Used by Settings to enable/disable multiprocess.
     80      */
     81     void enableMultiProcess(boolean enable);
     82 }
     83