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      */
notifyRelroCreationCompleted()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      */
waitForAndGetProvider()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      */
changeProviderAndSetting(String newProvider)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      */
getValidWebViewPackages()54     WebViewProviderInfo[] getValidWebViewPackages();
55 
56     /**
57      * Fetch all packages that could potentially implement WebView.
58      */
getAllWebViewPackages()59     WebViewProviderInfo[] getAllWebViewPackages();
60 
61     /**
62      * Used by DevelopmentSetting to get the name of the WebView provider currently in use.
63      */
getCurrentWebViewPackageName()64     String getCurrentWebViewPackageName();
65 
66     /**
67      * Used by Settings to determine whether a certain package can be enabled/disabled by the user -
68      * the package should not be modifiable in this way if it is a fallback package.
69      */
isFallbackPackage(String packageName)70     boolean isFallbackPackage(String packageName);
71 
72     /**
73      * Enable or disable the WebView package fallback mechanism.
74      */
enableFallbackLogic(boolean enable)75     void enableFallbackLogic(boolean enable);
76 }
77