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/*
* Copyright (C) 2018 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.packageinstaller.role.ui;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.role.RoleManager;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.os.Bundle;
import android.os.Process;
import android.text.Html;
import android.util.Log;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.DialogFragment;
import androidx.lifecycle.ViewModelProviders;
import com.android.packageinstaller.permission.utils.PackageRemovalMonitor;
import com.android.packageinstaller.permission.utils.Utils;
import com.android.packageinstaller.role.model.Role;
import com.android.packageinstaller.role.model.Roles;
import com.android.packageinstaller.role.utils.PackageUtils;
import com.android.permissioncontroller.R;
import java.util.List;
/**
* {@code Fragment} for a role request.
*/
public class RequestRoleFragment extends DialogFragment {
private static final String LOG_TAG = RequestRoleFragment.class.getSimpleName();
private String mRoleName;
private String mPackageName;
private RequestRoleViewModel mViewModel;
@Nullable
private PackageRemovalMonitor mPackageRemovalMonitor;
/**
* Create a new instance of this fragment.
*
* @param roleName the name of the requested role
* @param packageName the package name of the application requesting the role
*
* @return a new instance of this fragment
*/
public static RequestRoleFragment newInstance(@NonNull String roleName,
@NonNull String packageName) {
RequestRoleFragment fragment = new RequestRoleFragment();
Bundle arguments = new Bundle();
arguments.putString(Intent.EXTRA_ROLE_NAME, roleName);
arguments.putString(Intent.EXTRA_PACKAGE_NAME, packageName);
fragment.setArguments(arguments);
return fragment;
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle arguments = getArguments();
mPackageName = arguments.getString(Intent.EXTRA_PACKAGE_NAME);
mRoleName = arguments.getString(Intent.EXTRA_ROLE_NAME);
}
@NonNull
@Override
public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
Context context = requireContext();
Role role = Roles.get(context).get(mRoleName);
if (role == null) {
Log.w(LOG_TAG, "Unknown role: " + mRoleName);
finish();
return super.onCreateDialog(savedInstanceState);
}
String roleLabel = getString(role.getLabelResource());
ApplicationInfo applicationInfo = PackageUtils.getApplicationInfo(mPackageName, context);
if (applicationInfo == null) {
Log.w(LOG_TAG, "Unknown application: " + mPackageName);
finish();
return super.onCreateDialog(savedInstanceState);
}
String applicationLabel = Utils.getAppLabel(applicationInfo, context);
RoleManager roleManager = context.getSystemService(RoleManager.class);
List<String> currentPackageNames = roleManager.getRoleHolders(mRoleName);
if (currentPackageNames.contains(mPackageName)) {
Log.i(LOG_TAG, "Application is already a role holder, role: " + mRoleName
+ ", package: " + mPackageName);
setResultOkAndFinish();
return super.onCreateDialog(savedInstanceState);
}
String currentApplicationLabel = role.isExclusive() ? getCurrentApplicationLabel(
currentPackageNames, context) : null;
String messageHtml;
if (currentApplicationLabel == null) {
messageHtml = getString(R.string.role_request_message_add, applicationLabel, roleLabel);
} else {
messageHtml = getString(R.string.role_request_message_replace, applicationLabel,
currentApplicationLabel, roleLabel);
}
CharSequence message = Html.fromHtml(messageHtml, Html.FROM_HTML_MODE_LEGACY);
AlertDialog dialog = new AlertDialog.Builder(context, getTheme())
.setMessage(message)
// Set the positive button listener later to avoid the automatic dismiss behavior.
.setPositiveButton(android.R.string.ok, null)
.setNegativeButton(android.R.string.cancel, null)
.create();
dialog.setOnShowListener(dialog2 -> dialog.getButton(Dialog.BUTTON_POSITIVE)
.setOnClickListener(view -> addRoleHolder()));
return dialog;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mViewModel = ViewModelProviders.of(this).get(RequestRoleViewModel.class);
mViewModel.getLiveData().observe(this, this::onManageRoleHolderStateChanged);
}
@Override
public void onStart() {
super.onStart();
Context context = requireContext();
if (PackageUtils.getApplicationInfo(mPackageName, context) == null) {
Log.w(LOG_TAG, "Unknown application: " + mPackageName);
finish();
return;
}
mPackageRemovalMonitor = new PackageRemovalMonitor(context, mPackageName) {
@Override
protected void onPackageRemoved() {
Log.w(LOG_TAG, "Application is uninstalled, role: " + mRoleName + ", package: "
+ mPackageName);
finish();
}
};
mPackageRemovalMonitor.register();
}
@Override
public void onStop() {
super.onStop();
if (mPackageRemovalMonitor != null) {
mPackageRemovalMonitor.unregister();
mPackageRemovalMonitor = null;
}
}
@Override
public void onDismiss(@NonNull DialogInterface dialog) {
super.onDismiss(dialog);
Log.i(LOG_TAG, "Dialog dismissed, role: " + mRoleName + ", package: "
+ mPackageName);
if (getActivity() != null) {
finish();
}
}
private void onManageRoleHolderStateChanged(int state) {
AlertDialog dialog = (AlertDialog) getDialog();
switch (state) {
case ManageRoleHolderStateLiveData.STATE_IDLE:
dialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(true);
dialog.getButton(AlertDialog.BUTTON_NEGATIVE).setEnabled(true);
break;
case ManageRoleHolderStateLiveData.STATE_WORKING:
dialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(false);
dialog.getButton(AlertDialog.BUTTON_NEGATIVE).setEnabled(false);
break;
case ManageRoleHolderStateLiveData.STATE_SUCCESS:
setResultOkAndFinish();
break;
case ManageRoleHolderStateLiveData.STATE_FAILURE:
finish();
break;
}
}
private void addRoleHolder() {
mViewModel.getLiveData().manageRoleHolderAsUser(mRoleName, mPackageName,
Process.myUserHandle(), true, requireContext());
}
private void setResultOkAndFinish() {
requireActivity().setResult(Activity.RESULT_OK);
finish();
}
private void finish() {
requireActivity().finish();
}
private static String getCurrentApplicationLabel(@NonNull List<String> currentPackageNames,
@NonNull Context context) {
if (currentPackageNames.isEmpty()) {
return null;
}
String currentPackageName = currentPackageNames.get(0);
ApplicationInfo currentApplicationInfo = PackageUtils.getApplicationInfo(
currentPackageName, context);
if (currentApplicationInfo == null) {
return null;
}
return Utils.getAppLabel(currentApplicationInfo, context);
}
}
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