| /* |
| * 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.server.am; |
| |
| import android.app.AlertDialog; |
| import android.app.Service; |
| import android.content.ActivityNotFoundException; |
| import android.content.Context; |
| import android.content.DialogInterface; |
| import android.content.Intent; |
| import android.content.res.Resources; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.util.Slog; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.WindowManager; |
| import android.widget.TextView; |
| |
| import com.android.internal.R; |
| |
| /** |
| * Dialog to show when a user switch it about to happen. The intent is to snapshot the screen |
| * immediately after the dialog shows so that the user is informed that something is happening |
| * in the background rather than just freeze the screen and not know if the user-switch affordance |
| * was being handled. |
| */ |
| final class UserSwitchingDialog extends AlertDialog { |
| private static final String TAG = "ActivityManagerUserSwitchingDialog"; |
| |
| private static final int MSG_START_USER = 1; |
| |
| private final ActivityManagerService mService; |
| private final int mUserId; |
| |
| public UserSwitchingDialog(ActivityManagerService service, Context context, |
| int userId, String userName, boolean aboveSystem) { |
| super(context); |
| |
| mService = service; |
| mUserId = userId; |
| |
| // Set up the dialog contents |
| setCancelable(false); |
| Resources res = getContext().getResources(); |
| // Custom view due to alignment and font size requirements |
| View view = LayoutInflater.from(getContext()).inflate(R.layout.user_switching_dialog, null); |
| ((TextView) view.findViewById(R.id.message)).setText( |
| res.getString(com.android.internal.R.string.user_switching_message, userName)); |
| setView(view); |
| |
| if (aboveSystem) { |
| getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ERROR); |
| } |
| WindowManager.LayoutParams attrs = getWindow().getAttributes(); |
| attrs.privateFlags = WindowManager.LayoutParams.PRIVATE_FLAG_SYSTEM_ERROR | |
| WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS; |
| getWindow().setAttributes(attrs); |
| } |
| |
| @Override |
| public void show() { |
| super.show(); |
| // TODO: Instead of just an arbitrary delay, wait for a signal that the window was fully |
| // displayed by the window manager |
| mHandler.sendMessageDelayed(mHandler.obtainMessage(MSG_START_USER), 250); |
| } |
| |
| private final Handler mHandler = new Handler() { |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_START_USER: |
| mService.startUserInForeground(mUserId, UserSwitchingDialog.this); |
| break; |
| } |
| } |
| }; |
| } |