/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.webview;
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import android.content.Context;
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import android.content.pm.ApplicationInfo;
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import android.content.pm.PackageInfo;
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import android.content.pm.PackageManager;
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import android.os.RemoteException;
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import android.util.Log;
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import android.webkit.UserPackage;
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import android.webkit.WebViewFactory;
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import android.webkit.WebViewProviderInfo;
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import android.widget.Toast;
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import com.android.settings.R;
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import java.util.ArrayList;
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import java.util.List;
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public class WebViewUpdateServiceWrapper {
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private static final String TAG = "WVUSWrapper";
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public WebViewUpdateServiceWrapper() {
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}
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/**
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* Fetch the package currently used as WebView implementation.
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*/
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public PackageInfo getCurrentWebViewPackage() {
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try {
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return WebViewFactory.getUpdateService().getCurrentWebViewPackage();
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} catch (RemoteException e) {
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Log.e(TAG, e.toString());
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}
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return null;
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}
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/**
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* Fetches ApplicationInfo objects for all currently valid WebView packages.
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* A WebView package is considered valid if it can be used as a WebView implementation. The
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* validity of a package is not dependent on whether the package is installed/enabled.
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*/
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public List<ApplicationInfo> getValidWebViewApplicationInfos(Context context) {
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WebViewProviderInfo[] providers = null;
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try {
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providers = WebViewFactory.getUpdateService().getValidWebViewPackages();
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} catch (RemoteException e) {
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}
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List<ApplicationInfo> pkgs = new ArrayList<>();
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for (WebViewProviderInfo provider : providers) {
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try {
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pkgs.add(context.getPackageManager().getApplicationInfo(
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provider.packageName, PACKAGE_FLAGS));
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} catch (PackageManager.NameNotFoundException e) {
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}
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}
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return pkgs;
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}
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/**
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* Change WebView provider to {@param packageName}.
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*
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* @return whether the change succeeded.
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*/
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public boolean setWebViewProvider(String packageName) {
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try {
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return packageName.equals(
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WebViewFactory.getUpdateService().changeProviderAndSetting(packageName));
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} catch (RemoteException e) {
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Log.e(TAG, "RemoteException when trying to change provider to " + packageName, e);
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}
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return false;
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}
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/**
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* Fetch PackageInfos for the package named {@param packageName} for all users on the device.
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*/
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public List<UserPackage> getPackageInfosAllUsers(Context context, String packageName) {
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return UserPackage.getPackageInfosAllUsers(context, packageName, PACKAGE_FLAGS);
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}
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/**
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* Show a toast to explain the chosen package can no longer be chosen.
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*/
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public void showInvalidChoiceToast(Context context) {
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// The user chose a package that became invalid since the list was last updated,
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// show a Toast to explain the situation.
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Toast toast = Toast.makeText(context,
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R.string.select_webview_provider_toast_text, Toast.LENGTH_SHORT);
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toast.show();
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}
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static final int PACKAGE_FLAGS = PackageManager.MATCH_ANY_USER;
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}
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