| /* |
| * Copyright (C) 2019 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.permissioncontroller.role.ui.specialappaccess; |
| |
| import android.content.Context; |
| import android.content.Intent; |
| import android.os.Bundle; |
| import android.os.Process; |
| import android.os.UserHandle; |
| import android.util.ArrayMap; |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| import androidx.fragment.app.Fragment; |
| import androidx.lifecycle.ViewModelProviders; |
| import androidx.preference.Preference; |
| import androidx.preference.PreferenceFragmentCompat; |
| import androidx.preference.PreferenceManager; |
| import androidx.preference.PreferenceScreen; |
| |
| import com.android.permissioncontroller.role.model.Role; |
| import com.android.permissioncontroller.role.model.Roles; |
| import com.android.permissioncontroller.role.ui.RoleItem; |
| import com.android.permissioncontroller.role.ui.TwoTargetPreference; |
| |
| import java.util.List; |
| |
| /** |
| * Child fragment for the list of special app accesses. Must be added as a child fragment and its |
| * parent fragment must be a {@link PreferenceFragmentCompat} which implements {@link Parent}. |
| * |
| * @param <PF> type of the parent fragment |
| */ |
| public class SpecialAppAccessListChildFragment<PF extends PreferenceFragmentCompat |
| & SpecialAppAccessListChildFragment.Parent> extends Fragment |
| implements Preference.OnPreferenceClickListener { |
| |
| private SpecialAppAccessListViewModel mViewModel; |
| |
| /** |
| * Create a new instance of this fragment. |
| * |
| * @return a new instance of this fragment |
| */ |
| @NonNull |
| public static SpecialAppAccessListChildFragment newInstance() { |
| return new SpecialAppAccessListChildFragment(); |
| } |
| |
| @Override |
| public void onActivityCreated(@Nullable Bundle savedInstanceState) { |
| super.onActivityCreated(savedInstanceState); |
| |
| mViewModel = ViewModelProviders.of(this).get(SpecialAppAccessListViewModel.class); |
| mViewModel.getLiveData().observe(this, roleItems -> onRoleListChanged()); |
| } |
| |
| private void onRoleListChanged() { |
| List<RoleItem> roleItems = mViewModel.getLiveData().getValue(); |
| if (roleItems == null) { |
| return; |
| } |
| |
| PF preferenceFragment = requirePreferenceFragment(); |
| PreferenceManager preferenceManager = preferenceFragment.getPreferenceManager(); |
| Context context = preferenceManager.getContext(); |
| PreferenceScreen preferenceScreen = preferenceFragment.getPreferenceScreen(); |
| ArrayMap<String, Preference> oldPreferences = new ArrayMap<>(); |
| if (preferenceScreen == null) { |
| preferenceScreen = preferenceManager.createPreferenceScreen(context); |
| preferenceFragment.setPreferenceScreen(preferenceScreen); |
| } else { |
| for (int i = preferenceScreen.getPreferenceCount() - 1; i >= 0; --i) { |
| Preference preference = preferenceScreen.getPreference(i); |
| |
| preferenceScreen.removePreference(preference); |
| preference.setOrder(Preference.DEFAULT_ORDER); |
| oldPreferences.put(preference.getKey(), preference); |
| } |
| } |
| |
| int roleItemsSize = roleItems.size(); |
| for (int i = 0; i < roleItemsSize; i++) { |
| RoleItem roleItem = roleItems.get(i); |
| |
| Role role = roleItem.getRole(); |
| TwoTargetPreference preference = (TwoTargetPreference) oldPreferences.get( |
| role.getName()); |
| if (preference == null) { |
| preference = preferenceFragment.createPreference(context); |
| preference.setKey(role.getName()); |
| preference.setIconSpaceReserved(true); |
| preference.setTitle(role.getShortLabelResource()); |
| preference.setPersistent(false); |
| preference.setOnPreferenceClickListener(this); |
| } |
| |
| role.preparePreferenceAsUser(preference, Process.myUserHandle(), context); |
| |
| preferenceScreen.addPreference(preference); |
| } |
| |
| preferenceFragment.onPreferenceScreenChanged(); |
| } |
| |
| @Override |
| public boolean onPreferenceClick(@NonNull Preference preference) { |
| String roleName = preference.getKey(); |
| Context context = requireContext(); |
| Role role = Roles.get(context).get(roleName); |
| UserHandle user = Process.myUserHandle(); |
| Intent intent = role.getManageIntentAsUser(user, context); |
| if (intent == null) { |
| intent = SpecialAppAccessActivity.createIntent(roleName, context); |
| } |
| startActivity(intent); |
| return true; |
| } |
| |
| @NonNull |
| private PF requirePreferenceFragment() { |
| //noinspection unchecked |
| return (PF) requireParentFragment(); |
| } |
| |
| /** |
| * Interface that the parent fragment must implement. |
| */ |
| public interface Parent { |
| |
| /** |
| * Create a new preference for a special app access. |
| * |
| * @param context the {@code Context} to use when creating the preference. |
| * |
| * @return a new preference for a special app access |
| */ |
| @NonNull |
| TwoTargetPreference createPreference(@NonNull Context context); |
| |
| /** |
| * Callback when changes have been made to the {@link PreferenceScreen} of the parent |
| * {@link PreferenceFragmentCompat}. |
| */ |
| void onPreferenceScreenChanged(); |
| } |
| } |