Expose dialog for current webview setting.

Change-Id: I91c796b2c75c0ac8047ba0c2555a1036e8c6c616
Fixes: 28554048

AndroidManifest.xml

@@ -2888,6 +2888,18 @@
                         android:value="true" />
         </activity>
 
+        <activity android:name=".WebViewImplementation"
+                  android:exported="true"
+                  android:excludeFromRecents="true"
+                  android:theme="@*android:style/Theme.Material.Light.Dialog.Alert">
+            <intent-filter>
+                <action android:name="android.settings.WEBVIEW_SETTINGS" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+            <meta-data android:name="com.android.settings.PRIMARY_PROFILE_CONTROLLED"
+                android:value="true" />
+        </activity>
+
         <service
             android:name=".SettingsDumpService"
             android:exported="true"

src/com/android/settings/DevelopmentSettings.java

@@ -749,7 +749,7 @@ public class DevelopmentSettings extends RestrictedSettingsFragment
             ArrayList<String> options = new ArrayList<String>();
             ArrayList<String> values = new ArrayList<String>();
             for(int n = 0; n < providers.length; n++) {
-                if (isPackageEnabled(providers[n].packageName)) {
+                if (Utils.isPackageEnabled(getActivity(), providers[n].packageName)) {
                     options.add(providers[n].description);
                     values.add(providers[n].packageName);
                 }
@@ -1929,15 +1929,6 @@ public class DevelopmentSettings extends RestrictedSettingsFragment
                 requestCode, resources.getString(R.string.oem_unlock_enable));
     }
 
-    private boolean isPackageEnabled(String packageName) {
-        try {
-            return getActivity().getPackageManager().getApplicationInfo(packageName, 0).enabled;
-        } catch (NameNotFoundException e) {
-            // Thrown by PackageManager.getApplicationInfo if the package does not exist
-        }
-        return false;
-    }
-
     @Override
     public boolean onPreferenceChange(Preference preference, Object newValue) {
         if (HDCP_CHECKING_KEY.equals(preference.getKey())) {

src/com/android/settings/Utils.java

@@ -36,6 +36,7 @@ import android.content.pm.ApplicationInfo;
 import android.content.pm.IPackageManager;
 import android.content.pm.IntentFilterVerificationInfo;
 import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.pm.ResolveInfo;
 import android.content.pm.UserInfo;
 import android.content.res.Resources;
@@ -87,7 +88,6 @@ import android.view.animation.Animation.AnimationListener;
 import android.view.animation.AnimationUtils;
 import android.widget.ListView;
 import android.widget.TabWidget;
-
 import com.android.internal.app.UnlaunchableAppActivity;
 import com.android.internal.util.UserIcons;
 
@@ -1137,5 +1137,14 @@ public final class Utils extends com.android.settingslib.Utils {
         }
         return null;
     }
+
+    public static boolean isPackageEnabled(Context context, String packageName) {
+        try {
+            return context.getPackageManager().getApplicationInfo(packageName, 0).enabled;
+        } catch (NameNotFoundException e) {
+            // Thrown by PackageManager.getApplicationInfo if the package does not exist
+        }
+        return false;
+    }
 }
 

src/com/android/settings/WebViewImplementation.java

@@ -0,0 +1,113 @@
+/*
+ * 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 com.android.settings;
+
+import android.annotation.Nullable;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnCancelListener;
+import android.content.DialogInterface.OnClickListener;
+import android.content.DialogInterface.OnDismissListener;
+import android.os.Bundle;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.os.UserManager;
+import android.util.Log;
+import android.webkit.IWebViewUpdateService;
+import android.webkit.WebViewProviderInfo;
+import com.android.internal.logging.MetricsProto.MetricsEvent;
+
+import java.util.ArrayList;
+
+public class WebViewImplementation extends InstrumentedActivity implements
+        OnCancelListener, OnDismissListener {
+
+    private static final String TAG = "WebViewImplementation";
+
+    private IWebViewUpdateService mWebViewUpdateService;
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (!UserManager.get(this).isAdminUser()) {
+            finish();
+            return;
+        }
+        mWebViewUpdateService  =
+                IWebViewUpdateService.Stub.asInterface(ServiceManager.getService("webviewupdate"));
+        try {
+            WebViewProviderInfo[] providers = mWebViewUpdateService.getValidWebViewPackages();
+            if (providers == null) {
+                Log.e(TAG, "No WebView providers available");
+                finish();
+                return;
+            }
+
+            String currentValue = mWebViewUpdateService.getCurrentWebViewPackageName();
+            if (currentValue == null) {
+                currentValue = "";
+            }
+
+            int currentIndex = -1;
+            ArrayList<String> options = new ArrayList<>();
+            final ArrayList<String> values = new ArrayList<>();
+            for (WebViewProviderInfo provider : providers) {
+                if (Utils.isPackageEnabled(this, provider.packageName)) {
+                    options.add(provider.description);
+                    values.add(provider.packageName);
+                    if (currentValue.contentEquals(provider.packageName)) {
+                        currentIndex = values.size() - 1;
+                    }
+                }
+            }
+
+            new AlertDialog.Builder(this)
+                    .setTitle(R.string.select_webview_provider_dialog_title)
+                    .setSingleChoiceItems(options.toArray(new String[0]), currentIndex,
+                            new OnClickListener() {
+                        @Override
+                        public void onClick(DialogInterface dialog, int which) {
+                            try {
+                                mWebViewUpdateService.changeProviderAndSetting(values.get(which));
+                            } catch (RemoteException e) {
+                                Log.w(TAG, "Problem reaching webviewupdate service", e);
+                            }
+                            finish();
+                        }
+                    }).setNegativeButton(android.R.string.cancel, null)
+                    .setOnCancelListener(this)
+                    .setOnDismissListener(this)
+                    .show();
+        } catch (RemoteException e) {
+            Log.w(TAG, "Problem reaching webviewupdate service", e);
+            finish();
+        }
+    }
+
+    @Override
+    protected int getMetricsCategory() {
+        return MetricsEvent.WEBVIEW_IMPLEMENTATION;
+    }
+
+    @Override
+    public void onCancel(DialogInterface dialog) {
+        finish();
+    }
+
+    @Override
+    public void onDismiss(DialogInterface dialog) {
+        finish();
+    }
+}