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/*
* Copyright (C) 2014 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.launcher3.pm;
import static com.android.launcher3.Utilities.ATLEAST_U;
import static com.android.launcher3.uioverrides.ApiWrapper.queryAllUsers;
import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
import android.content.Context;
import android.content.Intent;
import android.os.Process;
import android.os.UserHandle;
import android.os.UserManager;
import androidx.annotation.AnyThread;
import androidx.annotation.NonNull;
import androidx.annotation.WorkerThread;
import com.android.launcher3.util.MainThreadInitializedObject;
import com.android.launcher3.util.SafeCloseable;
import com.android.launcher3.util.SimpleBroadcastReceiver;
import com.android.launcher3.util.UserIconInfo;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.function.BiConsumer;
/**
* Class which manages a local cache of user handles to avoid system rpc
*/
public class UserCache implements SafeCloseable {
public static final String ACTION_PROFILE_ADDED = ATLEAST_U
? Intent.ACTION_PROFILE_ADDED : Intent.ACTION_MANAGED_PROFILE_ADDED;
public static final String ACTION_PROFILE_REMOVED = ATLEAST_U
? Intent.ACTION_PROFILE_REMOVED : Intent.ACTION_MANAGED_PROFILE_REMOVED;
public static final String ACTION_PROFILE_UNLOCKED = ATLEAST_U
? Intent.ACTION_PROFILE_ACCESSIBLE : Intent.ACTION_MANAGED_PROFILE_UNLOCKED;
public static final String ACTION_PROFILE_LOCKED = ATLEAST_U
? Intent.ACTION_PROFILE_INACCESSIBLE : Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE;
public static final String ACTION_PROFILE_AVAILABLE = "android.intent.action.PROFILE_AVAILABLE";
public static final String ACTION_PROFILE_UNAVAILABLE =
"android.intent.action.PROFILE_UNAVAILABLE";
public static final MainThreadInitializedObject<UserCache> INSTANCE =
new MainThreadInitializedObject<>(UserCache::new);
/** Returns an instance of UserCache bound to the context provided. */
public static UserCache getInstance(Context context) {
return INSTANCE.get(context);
}
private final List<BiConsumer<UserHandle, String>> mUserEventListeners = new ArrayList<>();
private final SimpleBroadcastReceiver mUserChangeReceiver =
new SimpleBroadcastReceiver(this::onUsersChanged);
private final Context mContext;
@NonNull
private Map<UserHandle, UserIconInfo> mUserToSerialMap;
private UserCache(Context context) {
mContext = context;
mUserToSerialMap = Collections.emptyMap();
MODEL_EXECUTOR.execute(this::initAsync);
}
@Override
public void close() {
MODEL_EXECUTOR.execute(() -> mUserChangeReceiver.unregisterReceiverSafely(mContext));
}
@WorkerThread
private void initAsync() {
mUserChangeReceiver.register(mContext,
Intent.ACTION_MANAGED_PROFILE_AVAILABLE,
Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE,
ACTION_PROFILE_ADDED,
ACTION_PROFILE_REMOVED,
ACTION_PROFILE_UNLOCKED,
ACTION_PROFILE_LOCKED,
ACTION_PROFILE_AVAILABLE,
ACTION_PROFILE_UNAVAILABLE);
updateCache();
}
@AnyThread
private void onUsersChanged(Intent intent) {
MODEL_EXECUTOR.execute(this::updateCache);
UserHandle user = intent.getParcelableExtra(Intent.EXTRA_USER);
if (user == null) {
return;
}
String action = intent.getAction();
mUserEventListeners.forEach(l -> l.accept(user, action));
}
@WorkerThread
private void updateCache() {
mUserToSerialMap = queryAllUsers(mContext);
}
/**
* Adds a listener for user additions and removals
*/
public SafeCloseable addUserEventListener(BiConsumer<UserHandle, String> listener) {
mUserEventListeners.add(listener);
return () -> mUserEventListeners.remove(listener);
}
/**
* @see UserManager#getSerialNumberForUser(UserHandle)
*/
public long getSerialNumberForUser(UserHandle user) {
return getUserInfo(user).userSerial;
}
/**
* Returns the user properties for the provided user or default values
*/
@NonNull
public UserIconInfo getUserInfo(UserHandle user) {
UserIconInfo info = mUserToSerialMap.get(user);
return info == null ? new UserIconInfo(user, UserIconInfo.TYPE_MAIN) : info;
}
/**
* @see UserManager#getUserForSerialNumber(long)
*/
public UserHandle getUserForSerialNumber(long serialNumber) {
return mUserToSerialMap
.entrySet()
.stream()
.filter(entry -> serialNumber == entry.getValue().userSerial)
.findFirst()
.map(Map.Entry::getKey)
.orElse(Process.myUserHandle());
}
/**
* @see UserManager#getUserProfiles()
*/
public List<UserHandle> getUserProfiles() {
return List.copyOf(mUserToSerialMap.keySet());
}
}
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