| /* |
| * 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.systemui.statusbar.policy; |
| |
| import com.android.systemui.BitmapHelper; |
| import com.android.systemui.GuestResumeSessionReceiver; |
| import com.android.systemui.R; |
| import com.android.systemui.qs.QSTile; |
| import com.android.systemui.qs.tiles.UserDetailView; |
| import com.android.systemui.statusbar.phone.SystemUIDialog; |
| |
| import android.app.ActivityManager; |
| import android.app.ActivityManagerNative; |
| import android.app.Dialog; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.DialogInterface; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.UserInfo; |
| import android.database.ContentObserver; |
| import android.graphics.Bitmap; |
| import android.graphics.drawable.Drawable; |
| import android.os.AsyncTask; |
| import android.os.Handler; |
| import android.os.RemoteException; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.provider.Settings; |
| import android.util.Log; |
| import android.util.SparseArray; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.WindowManagerGlobal; |
| import android.widget.BaseAdapter; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| import java.lang.ref.WeakReference; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Keeps a list of all users on the device for user switching. |
| */ |
| public class UserSwitcherController { |
| |
| private static final String TAG = "UserSwitcherController"; |
| private static final boolean DEBUG = false; |
| private static final String SIMPLE_USER_SWITCHER_GLOBAL_SETTING = |
| "lockscreenSimpleUserSwitcher"; |
| |
| private final Context mContext; |
| private final UserManager mUserManager; |
| private final ArrayList<WeakReference<BaseUserAdapter>> mAdapters = new ArrayList<>(); |
| private final GuestResumeSessionReceiver mGuestResumeSessionReceiver |
| = new GuestResumeSessionReceiver(); |
| private final KeyguardMonitor mKeyguardMonitor; |
| |
| private ArrayList<UserRecord> mUsers = new ArrayList<>(); |
| private Dialog mExitGuestDialog; |
| private int mLastNonGuestUser = UserHandle.USER_OWNER; |
| private boolean mSimpleUserSwitcher; |
| private boolean mAddUsersWhenLocked; |
| |
| public UserSwitcherController(Context context, KeyguardMonitor keyguardMonitor) { |
| mContext = context; |
| mGuestResumeSessionReceiver.register(context); |
| mKeyguardMonitor = keyguardMonitor; |
| mUserManager = UserManager.get(context); |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(Intent.ACTION_USER_ADDED); |
| filter.addAction(Intent.ACTION_USER_REMOVED); |
| filter.addAction(Intent.ACTION_USER_INFO_CHANGED); |
| filter.addAction(Intent.ACTION_USER_SWITCHED); |
| filter.addAction(Intent.ACTION_USER_STOPPING); |
| mContext.registerReceiverAsUser(mReceiver, UserHandle.OWNER, filter, |
| null /* permission */, null /* scheduler */); |
| |
| |
| mContext.getContentResolver().registerContentObserver( |
| Settings.Global.getUriFor(SIMPLE_USER_SWITCHER_GLOBAL_SETTING), true, |
| mSettingsObserver); |
| mContext.getContentResolver().registerContentObserver( |
| Settings.Global.getUriFor(Settings.Global.ADD_USERS_WHEN_LOCKED), true, |
| mSettingsObserver); |
| // Fetch initial values. |
| mSettingsObserver.onChange(false); |
| |
| keyguardMonitor.addCallback(mCallback); |
| |
| refreshUsers(UserHandle.USER_NULL); |
| } |
| |
| /** |
| * Refreshes users from UserManager. |
| * |
| * The pictures are only loaded if they have not been loaded yet. |
| * |
| * @param forcePictureLoadForId forces the picture of the given user to be reloaded. |
| */ |
| private void refreshUsers(int forcePictureLoadForId) { |
| |
| SparseArray<Bitmap> bitmaps = new SparseArray<>(mUsers.size()); |
| final int N = mUsers.size(); |
| for (int i = 0; i < N; i++) { |
| UserRecord r = mUsers.get(i); |
| if (r == null || r.info == null |
| || r.info.id == forcePictureLoadForId || r.picture == null) { |
| continue; |
| } |
| bitmaps.put(r.info.id, r.picture); |
| } |
| |
| final boolean addUsersWhenLocked = mAddUsersWhenLocked; |
| new AsyncTask<SparseArray<Bitmap>, Void, ArrayList<UserRecord>>() { |
| @SuppressWarnings("unchecked") |
| @Override |
| protected ArrayList<UserRecord> doInBackground(SparseArray<Bitmap>... params) { |
| final SparseArray<Bitmap> bitmaps = params[0]; |
| List<UserInfo> infos = mUserManager.getUsers(true); |
| if (infos == null) { |
| return null; |
| } |
| ArrayList<UserRecord> records = new ArrayList<>(infos.size()); |
| int currentId = ActivityManager.getCurrentUser(); |
| UserRecord guestRecord = null; |
| int avatarSize = mContext.getResources() |
| .getDimensionPixelSize(R.dimen.max_avatar_size); |
| |
| for (UserInfo info : infos) { |
| boolean isCurrent = currentId == info.id; |
| if (info.isGuest()) { |
| guestRecord = new UserRecord(info, null /* picture */, |
| true /* isGuest */, isCurrent, false /* isAddUser */, |
| false /* isRestricted */); |
| } else if (info.supportsSwitchTo()) { |
| Bitmap picture = bitmaps.get(info.id); |
| if (picture == null) { |
| picture = mUserManager.getUserIcon(info.id); |
| } |
| if (picture != null) { |
| picture = BitmapHelper.createCircularClip( |
| picture, avatarSize, avatarSize); |
| } |
| records.add(new UserRecord(info, picture, false /* isGuest */, isCurrent, |
| false /* isAddUser */, false /* isRestricted */)); |
| } |
| } |
| |
| boolean ownerCanCreateUsers = !mUserManager.hasUserRestriction( |
| UserManager.DISALLOW_ADD_USER, UserHandle.OWNER); |
| boolean currentUserCanCreateUsers = |
| (currentId == UserHandle.USER_OWNER) && ownerCanCreateUsers; |
| boolean anyoneCanCreateUsers = ownerCanCreateUsers && addUsersWhenLocked; |
| boolean canCreateGuest = (currentUserCanCreateUsers || anyoneCanCreateUsers) |
| && guestRecord == null; |
| boolean canCreateUser = (currentUserCanCreateUsers || anyoneCanCreateUsers) |
| && records.size() < UserManager.getMaxSupportedUsers(); |
| boolean createIsRestricted = !addUsersWhenLocked; |
| |
| if (!mSimpleUserSwitcher) { |
| if (guestRecord == null) { |
| if (canCreateGuest) { |
| records.add(new UserRecord(null /* info */, null /* picture */, |
| true /* isGuest */, false /* isCurrent */, |
| false /* isAddUser */, createIsRestricted)); |
| } |
| } else { |
| records.add(guestRecord); |
| } |
| } |
| |
| if (canCreateUser) { |
| records.add(new UserRecord(null /* info */, null /* picture */, |
| false /* isGuest */, false /* isCurrent */, true /* isAddUser */, |
| createIsRestricted)); |
| } |
| |
| return records; |
| } |
| |
| @Override |
| protected void onPostExecute(ArrayList<UserRecord> userRecords) { |
| if (userRecords != null) { |
| mUsers = userRecords; |
| notifyAdapters(); |
| } |
| } |
| }.execute((SparseArray) bitmaps); |
| } |
| |
| private void notifyAdapters() { |
| for (int i = mAdapters.size() - 1; i >= 0; i--) { |
| BaseUserAdapter adapter = mAdapters.get(i).get(); |
| if (adapter != null) { |
| adapter.notifyDataSetChanged(); |
| } else { |
| mAdapters.remove(i); |
| } |
| } |
| } |
| |
| public boolean isSimpleUserSwitcher() { |
| return mSimpleUserSwitcher; |
| } |
| |
| public void switchTo(UserRecord record) { |
| int id; |
| if (record.isGuest && record.info == null) { |
| // No guest user. Create one. |
| id = mUserManager.createGuest(mContext, mContext.getString(R.string.guest_nickname)).id; |
| } else if (record.isAddUser) { |
| id = mUserManager.createUser( |
| mContext.getString(R.string.user_new_user_name), 0 /* flags */).id; |
| } else { |
| id = record.info.id; |
| } |
| |
| if (ActivityManager.getCurrentUser() == id) { |
| if (record.isGuest) { |
| showExitGuestDialog(id); |
| } |
| return; |
| } |
| |
| switchToUserId(id); |
| } |
| |
| private void switchToUserId(int id) { |
| try { |
| WindowManagerGlobal.getWindowManagerService().lockNow(null); |
| ActivityManagerNative.getDefault().switchUser(id); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Couldn't switch user.", e); |
| } |
| } |
| |
| private void showExitGuestDialog(int id) { |
| if (mExitGuestDialog != null && mExitGuestDialog.isShowing()) { |
| mExitGuestDialog.cancel(); |
| } |
| mExitGuestDialog = new ExitGuestDialog(mContext, id); |
| mExitGuestDialog.show(); |
| } |
| |
| private void exitGuest(int id) { |
| int newId = UserHandle.USER_OWNER; |
| if (mLastNonGuestUser != UserHandle.USER_OWNER) { |
| UserInfo info = mUserManager.getUserInfo(mLastNonGuestUser); |
| if (info != null && info.isEnabled() && info.supportsSwitchTo()) { |
| newId = info.id; |
| } |
| } |
| switchToUserId(newId); |
| mUserManager.removeUser(id); |
| } |
| |
| private BroadcastReceiver mReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (DEBUG) { |
| Log.v(TAG, "Broadcast: a=" + intent.getAction() |
| + " user=" + intent.getIntExtra(Intent.EXTRA_USER_HANDLE, -1)); |
| } |
| if (Intent.ACTION_USER_SWITCHED.equals(intent.getAction())) { |
| if (mExitGuestDialog != null && mExitGuestDialog.isShowing()) { |
| mExitGuestDialog.cancel(); |
| mExitGuestDialog = null; |
| } |
| |
| final int currentId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, -1); |
| final int N = mUsers.size(); |
| for (int i = 0; i < N; i++) { |
| UserRecord record = mUsers.get(i); |
| if (record.info == null) continue; |
| boolean shouldBeCurrent = record.info.id == currentId; |
| if (record.isCurrent != shouldBeCurrent) { |
| mUsers.set(i, record.copyWithIsCurrent(shouldBeCurrent)); |
| } |
| if (shouldBeCurrent && !record.isGuest) { |
| mLastNonGuestUser = record.info.id; |
| } |
| if (currentId != UserHandle.USER_OWNER && record.isRestricted) { |
| // Immediately remove restricted records in case the AsyncTask is too slow. |
| mUsers.remove(i); |
| i--; |
| } |
| } |
| notifyAdapters(); |
| } |
| int forcePictureLoadForId = UserHandle.USER_NULL; |
| if (Intent.ACTION_USER_INFO_CHANGED.equals(intent.getAction())) { |
| forcePictureLoadForId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, |
| UserHandle.USER_NULL); |
| } |
| refreshUsers(forcePictureLoadForId); |
| } |
| }; |
| |
| private final ContentObserver mSettingsObserver = new ContentObserver(new Handler()) { |
| public void onChange(boolean selfChange) { |
| mSimpleUserSwitcher = Settings.Global.getInt(mContext.getContentResolver(), |
| SIMPLE_USER_SWITCHER_GLOBAL_SETTING, 0) != 0; |
| mAddUsersWhenLocked = Settings.Global.getInt(mContext.getContentResolver(), |
| Settings.Global.ADD_USERS_WHEN_LOCKED, 0) != 0; |
| refreshUsers(UserHandle.USER_NULL); |
| }; |
| }; |
| |
| public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| pw.println("UserSwitcherController state:"); |
| pw.println(" mLastNonGuestUser=" + mLastNonGuestUser); |
| pw.print(" mUsers.size="); pw.println(mUsers.size()); |
| for (int i = 0; i < mUsers.size(); i++) { |
| final UserRecord u = mUsers.get(i); |
| pw.print(" "); pw.println(u.toString()); |
| } |
| } |
| |
| public static abstract class BaseUserAdapter extends BaseAdapter { |
| |
| final UserSwitcherController mController; |
| |
| protected BaseUserAdapter(UserSwitcherController controller) { |
| mController = controller; |
| controller.mAdapters.add(new WeakReference<>(this)); |
| } |
| |
| @Override |
| public int getCount() { |
| boolean secureKeyguardShowing = mController.mKeyguardMonitor.isShowing() |
| && mController.mKeyguardMonitor.isSecure(); |
| if (!secureKeyguardShowing) { |
| return mController.mUsers.size(); |
| } |
| // The lock screen is secure and showing. Filter out restricted records. |
| final int N = mController.mUsers.size(); |
| int count = 0; |
| for (int i = 0; i < N; i++) { |
| if (mController.mUsers.get(i).isRestricted) { |
| break; |
| } else { |
| count++; |
| } |
| } |
| return count; |
| } |
| |
| @Override |
| public UserRecord getItem(int position) { |
| return mController.mUsers.get(position); |
| } |
| |
| @Override |
| public long getItemId(int position) { |
| return position; |
| } |
| |
| public void switchTo(UserRecord record) { |
| mController.switchTo(record); |
| } |
| |
| public String getName(Context context, UserRecord item) { |
| if (item.isGuest) { |
| if (item.isCurrent) { |
| return context.getString(R.string.guest_exit_guest); |
| } else { |
| return context.getString( |
| item.info == null ? R.string.guest_new_guest : R.string.guest_nickname); |
| } |
| } else if (item.isAddUser) { |
| return context.getString(R.string.user_add_user); |
| } else { |
| return item.info.name; |
| } |
| } |
| |
| public int getSwitchableUsers() { |
| int result = 0; |
| ArrayList<UserRecord> users = mController.mUsers; |
| int N = users.size(); |
| for (int i = 0; i < N; i++) { |
| if (users.get(i).info != null) { |
| result++; |
| } |
| } |
| return result; |
| } |
| |
| public Drawable getDrawable(Context context, UserRecord item) { |
| if (item.isAddUser) { |
| return context.getDrawable(R.drawable.ic_add_circle_qs); |
| } |
| return context.getDrawable(R.drawable.ic_account_circle_qs); |
| } |
| } |
| |
| public static final class UserRecord { |
| public final UserInfo info; |
| public final Bitmap picture; |
| public final boolean isGuest; |
| public final boolean isCurrent; |
| public final boolean isAddUser; |
| /** If true, the record is only visible to the owner and only when unlocked. */ |
| public final boolean isRestricted; |
| |
| public UserRecord(UserInfo info, Bitmap picture, boolean isGuest, boolean isCurrent, |
| boolean isAddUser, boolean isRestricted) { |
| this.info = info; |
| this.picture = picture; |
| this.isGuest = isGuest; |
| this.isCurrent = isCurrent; |
| this.isAddUser = isAddUser; |
| this.isRestricted = isRestricted; |
| } |
| |
| public UserRecord copyWithIsCurrent(boolean _isCurrent) { |
| return new UserRecord(info, picture, isGuest, _isCurrent, isAddUser, isRestricted); |
| } |
| |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("UserRecord("); |
| if (info != null) { |
| sb.append("name=\"" + info.name + "\" id=" + info.id); |
| } else { |
| if (isGuest) { |
| sb.append("<add guest placeholder>"); |
| } else if (isAddUser) { |
| sb.append("<add user placeholder>"); |
| } |
| } |
| if (isGuest) sb.append(" <isGuest>"); |
| if (isAddUser) sb.append(" <isAddUser>"); |
| if (isCurrent) sb.append(" <isCurrent>"); |
| if (picture != null) sb.append(" <hasPicture>"); |
| if (isRestricted) sb.append(" <isRestricted>"); |
| sb.append(')'); |
| return sb.toString(); |
| } |
| } |
| |
| public final QSTile.DetailAdapter userDetailAdapter = new QSTile.DetailAdapter() { |
| private final Intent USER_SETTINGS_INTENT = new Intent("android.settings.USER_SETTINGS"); |
| |
| @Override |
| public int getTitle() { |
| return R.string.quick_settings_user_title; |
| } |
| |
| @Override |
| public View createDetailView(Context context, View convertView, ViewGroup parent) { |
| UserDetailView v; |
| if (!(convertView instanceof UserDetailView)) { |
| v = UserDetailView.inflate(context, parent, false); |
| v.createAndSetAdapter(UserSwitcherController.this); |
| } else { |
| v = (UserDetailView) convertView; |
| } |
| return v; |
| } |
| |
| @Override |
| public Intent getSettingsIntent() { |
| return USER_SETTINGS_INTENT; |
| } |
| |
| @Override |
| public Boolean getToggleState() { |
| return null; |
| } |
| |
| @Override |
| public void setToggleState(boolean state) { |
| } |
| }; |
| |
| private final KeyguardMonitor.Callback mCallback = new KeyguardMonitor.Callback() { |
| @Override |
| public void onKeyguardChanged() { |
| notifyAdapters(); |
| } |
| }; |
| |
| private final class ExitGuestDialog extends SystemUIDialog implements |
| DialogInterface.OnClickListener { |
| |
| private final int mGuestId; |
| |
| public ExitGuestDialog(Context context, int guestId) { |
| super(context); |
| setTitle(R.string.guest_exit_guest_dialog_title); |
| setMessage(context.getString(R.string.guest_exit_guest_dialog_message)); |
| setButton(DialogInterface.BUTTON_NEGATIVE, |
| context.getString(android.R.string.no), this); |
| setButton(DialogInterface.BUTTON_POSITIVE, |
| context.getString(android.R.string.yes), this); |
| setCanceledOnTouchOutside(false); |
| mGuestId = guestId; |
| } |
| |
| @Override |
| public void onClick(DialogInterface dialog, int which) { |
| if (which == BUTTON_NEGATIVE) { |
| cancel(); |
| } else { |
| dismiss(); |
| exitGuest(mGuestId); |
| } |
| } |
| } |
| } |