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/*
* Copyright (C) 2017 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.webview;
import static android.provider.Settings.ACTION_WEBVIEW_SETTINGS;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageItemInfo;
import android.content.pm.PackageManager;
import android.support.annotation.VisibleForTesting;
import android.text.TextUtils;
import android.webkit.UserPackage;
import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
import com.android.settings.R;
import com.android.settings.applications.defaultapps.DefaultAppPickerFragment;
import com.android.settingslib.applications.DefaultAppInfo;
import com.android.settingslib.wrapper.PackageManagerWrapper;
import java.util.ArrayList;
import java.util.List;
public class WebViewAppPicker extends DefaultAppPickerFragment {
private WebViewUpdateServiceWrapper mWebViewUpdateServiceWrapper;
private WebViewUpdateServiceWrapper getWebViewUpdateServiceWrapper() {
if (mWebViewUpdateServiceWrapper == null) {
setWebViewUpdateServiceWrapper(createDefaultWebViewUpdateServiceWrapper());
}
return mWebViewUpdateServiceWrapper;
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
if (!mUserManager.isAdminUser()) {
getActivity().finish();
}
}
@Override
protected int getPreferenceScreenResId() {
return R.xml.webview_app_settings;
}
@Override
protected List<DefaultAppInfo> getCandidates() {
final List<DefaultAppInfo> packageInfoList = new ArrayList<DefaultAppInfo>();
final Context context = getContext();
final WebViewUpdateServiceWrapper webViewUpdateService = getWebViewUpdateServiceWrapper();
final List<ApplicationInfo> pkgs =
webViewUpdateService.getValidWebViewApplicationInfos(context);
for (ApplicationInfo ai : pkgs) {
packageInfoList.add(createDefaultAppInfo(context, mPm, ai,
getDisabledReason(webViewUpdateService, context, ai.packageName)));
}
return packageInfoList;
}
@Override
protected String getDefaultKey() {
PackageInfo currentPackage = getWebViewUpdateServiceWrapper().getCurrentWebViewPackage();
return currentPackage == null ? null : currentPackage.packageName;
}
protected boolean setDefaultKey(String key) {
boolean success = getWebViewUpdateServiceWrapper().setWebViewProvider(key);
return success;
}
@Override
protected void onSelectionPerformed(boolean success) {
if (success) {
Activity activity = getActivity();
Intent intent = activity == null ? null : activity.getIntent();
if (intent != null && ACTION_WEBVIEW_SETTINGS.equals(intent.getAction())) {
// If this was started through ACTION_WEBVIEW_SETTINGS then return once we have
// chosen a new package.
getActivity().finish();
}
} else {
getWebViewUpdateServiceWrapper().showInvalidChoiceToast(getActivity());
updateCandidates();
}
}
private WebViewUpdateServiceWrapper createDefaultWebViewUpdateServiceWrapper() {
return new WebViewUpdateServiceWrapper();
}
@VisibleForTesting
void setWebViewUpdateServiceWrapper(WebViewUpdateServiceWrapper wvusWrapper) {
mWebViewUpdateServiceWrapper = wvusWrapper;
}
@Override
public int getMetricsCategory() {
return MetricsEvent.WEBVIEW_IMPLEMENTATION;
}
private static class WebViewAppInfo extends DefaultAppInfo {
public WebViewAppInfo(Context context, PackageManagerWrapper pm,
PackageItemInfo packageItemInfo, String summary, boolean enabled) {
super(context, pm, packageItemInfo, summary, enabled);
}
@Override
public CharSequence loadLabel() {
String versionName = "";
try {
versionName = mPm.getPackageManager().
getPackageInfo(packageItemInfo.packageName, 0).versionName;
} catch (PackageManager.NameNotFoundException e) {
}
return String.format("%s %s", super.loadLabel(), versionName);
}
}
@VisibleForTesting
DefaultAppInfo createDefaultAppInfo(Context context, PackageManagerWrapper pm,
PackageItemInfo packageItemInfo, String disabledReason) {
return new WebViewAppInfo(context, pm, packageItemInfo, disabledReason,
TextUtils.isEmpty(disabledReason) /* enabled */);
}
/**
* Returns the reason why a package cannot be used as WebView implementation.
* This is either because of it being disabled, uninstalled, or hidden for any user.
*/
@VisibleForTesting
String getDisabledReason(WebViewUpdateServiceWrapper webviewUpdateServiceWrapper,
Context context, String packageName) {
List<UserPackage> userPackages =
webviewUpdateServiceWrapper.getPackageInfosAllUsers(context, packageName);
for (UserPackage userPackage : userPackages) {
if (!userPackage.isInstalledPackage()) {
// Package uninstalled/hidden
return context.getString(
R.string.webview_uninstalled_for_user, userPackage.getUserInfo().name);
} else if (!userPackage.isEnabledPackage()) {
// Package disabled
return context.getString(
R.string.webview_disabled_for_user, userPackage.getUserInfo().name);
}
}
return null;
}
}