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/*
* Copyright (C) 2021 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.server.connectivity;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.net.NetworkCapabilities;
import android.os.UserHandle;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* A data class containing all the per-profile network preferences.
*
* A given profile can only have one preference.
*/
public class ProfileNetworkPreferenceList {
/**
* A single preference, as it applies to a given user profile.
*/
public static class Preference {
@NonNull public final UserHandle user;
// Capabilities are only null when sending an object to remove the setting for a user
@Nullable public final NetworkCapabilities capabilities;
public final boolean allowFallback;
public Preference(@NonNull final UserHandle user,
@Nullable final NetworkCapabilities capabilities,
final boolean allowFallback) {
this.user = user;
this.capabilities = null == capabilities ? null : new NetworkCapabilities(capabilities);
this.allowFallback = allowFallback;
}
/** toString */
public String toString() {
return "[ProfileNetworkPreference user=" + user
+ " caps=" + capabilities
+ " allowFallback=" + allowFallback
+ "]";
}
}
@NonNull public final List<Preference> preferences;
public ProfileNetworkPreferenceList() {
preferences = Collections.EMPTY_LIST;
}
private ProfileNetworkPreferenceList(@NonNull final List<Preference> list) {
preferences = Collections.unmodifiableList(list);
}
/**
* Returns a new object consisting of this object plus the passed preference.
*
* It is not expected that unwanted preference already exists for the same user.
* All preferences for the user that were previously configured should be cleared before
* adding a new preference.
* Passing a Preference object containing a null capabilities object is equivalent
* to removing the preference for this user.
*/
public ProfileNetworkPreferenceList plus(@NonNull final Preference pref) {
final ArrayList<Preference> newPrefs = new ArrayList<>(preferences);
if (null != pref.capabilities) {
newPrefs.add(pref);
}
return new ProfileNetworkPreferenceList(newPrefs);
}
/**
* Remove all preferences corresponding to a user.
*/
public ProfileNetworkPreferenceList withoutUser(UserHandle user) {
final ArrayList<Preference> newPrefs = new ArrayList<>();
for (final Preference existingPref : preferences) {
if (!existingPref.user.equals(user)) {
newPrefs.add(existingPref);
}
}
return new ProfileNetworkPreferenceList(newPrefs);
}
public boolean isEmpty() {
return preferences.isEmpty();
}
}
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