src/com/android/settings/WebViewImplementation.java

   1 /*
   2  * Copyright (C) 2016 The Android Open Source Project
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
   5  * except in compliance with the License. You may obtain a copy of the License at
   6  *
   7  *      http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software distributed under the
  10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  11  * KIND, either express or implied. See the License for the specific language governing
  12  * permissions and limitations under the License.
  13  */
  14
  15 package com.android.settings;
  16
  17 import android.annotation.Nullable;
  18 import android.app.AlertDialog;
  19 import android.content.DialogInterface;
  20 import android.content.DialogInterface.OnCancelListener;
  21 import android.content.DialogInterface.OnClickListener;
  22 import android.content.DialogInterface.OnDismissListener;
  23 import android.os.Bundle;
  24 import android.os.RemoteException;
  25 import android.os.ServiceManager;
  26 import android.os.UserManager;
  27 import android.util.Log;
  28 import android.webkit.IWebViewUpdateService;
  29 import android.webkit.WebViewProviderInfo;
  30 import com.android.internal.logging.MetricsProto.MetricsEvent;
  31
  32 import java.util.ArrayList;
  33
  34 public class WebViewImplementation extends InstrumentedActivity implements
  35         OnCancelListener, OnDismissListener {
  36
  37     private static final String TAG = "WebViewImplementation";
  38
  39     private IWebViewUpdateService mWebViewUpdateService;
  40
  41     @Override
  42     protected void onCreate(@Nullable Bundle savedInstanceState) {
  43         super.onCreate(savedInstanceState);
  44         if (!UserManager.get(this).isAdminUser()) {
  45             finish();
  46             return;
  47         }
  48         mWebViewUpdateService  =
  49                 IWebViewUpdateService.Stub.asInterface(ServiceManager.getService("webviewupdate"));
  50         try {
  51             WebViewProviderInfo[] providers = mWebViewUpdateService.getValidWebViewPackages();
  52             if (providers == null) {
  53                 Log.e(TAG, "No WebView providers available");
  54                 finish();
  55                 return;
  56             }
  57
  58             String currentValue = mWebViewUpdateService.getCurrentWebViewPackageName();
  59             if (currentValue == null) {
  60                 currentValue = "";
  61             }
  62
  63             int currentIndex = -1;
  64             ArrayList<String> options = new ArrayList<>();
  65             final ArrayList<String> values = new ArrayList<>();
  66             for (WebViewProviderInfo provider : providers) {
  67                 if (Utils.isPackageEnabled(this, provider.packageName)) {
  68                     options.add(provider.description);
  69                     values.add(provider.packageName);
  70                     if (currentValue.contentEquals(provider.packageName)) {
  71                         currentIndex = values.size() - 1;
  72                     }
  73                 }
  74             }
  75
  76             new AlertDialog.Builder(this)
  77                     .setTitle(R.string.select_webview_provider_dialog_title)
  78                     .setSingleChoiceItems(options.toArray(new String[0]), currentIndex,
  79                             new OnClickListener() {
  80                         @Override
  81                         public void onClick(DialogInterface dialog, int which) {
  82                             try {
  83                                 mWebViewUpdateService.changeProviderAndSetting(values.get(which));
  84                             } catch (RemoteException e) {
  85                                 Log.w(TAG, "Problem reaching webviewupdate service", e);
  86                             }
  87                             finish();
  88                         }
  89                     }).setNegativeButton(android.R.string.cancel, null)
  90                     .setOnCancelListener(this)
  91                     .setOnDismissListener(this)
  92                     .show();
  93         } catch (RemoteException e) {
  94             Log.w(TAG, "Problem reaching webviewupdate service", e);
  95             finish();
  96         }
  97     }
  98
  99     @Override
 100     protected int getMetricsCategory() {
 101         return MetricsEvent.WEBVIEW_IMPLEMENTATION;
 102     }
 103
 104     @Override
 105     public void onCancel(DialogInterface dialog) {
 106         finish();
 107     }
 108
 109     @Override
 110     public void onDismiss(DialogInterface dialog) {
 111         finish();
 112     }
 113 }