1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.systemui;
18
19import java.io.FileDescriptor;
20import java.io.PrintWriter;
21
22import android.app.Service;
23import android.content.BroadcastReceiver;
24import android.content.Context;
25import android.content.Intent;
26import android.content.pm.PackageManager;
27import android.content.res.Configuration;
28import android.os.Binder;
29import android.os.IBinder;
30import android.os.RemoteException;
31import android.os.ServiceManager;
32import android.util.Slog;
33import android.view.IWindowManager;
34import android.view.WindowManagerGlobal;
35import android.view.accessibility.AccessibilityManager;
36
37public class SystemUIService extends Service {
38    static final String TAG = "SystemUIService";
39
40    /**
41     * The class names of the stuff to start.
42     */
43    final Object[] SERVICES = new Object[] {
44            0, // system bar or status bar, filled in below.
45            com.android.systemui.power.PowerUI.class,
46            com.android.systemui.media.RingtonePlayer.class,
47        };
48
49    /**
50     * Hold a reference on the stuff we start.
51     */
52    SystemUI[] mServices;
53
54    private Class chooseClass(Object o) {
55        if (o instanceof Integer) {
56            final String cl = getString((Integer)o);
57            try {
58                return getClassLoader().loadClass(cl);
59            } catch (ClassNotFoundException ex) {
60                throw new RuntimeException(ex);
61            }
62        } else if (o instanceof Class) {
63            return (Class)o;
64        } else {
65            throw new RuntimeException("Unknown system ui service: " + o);
66        }
67    }
68
69    @Override
70    public void onCreate() {
71        // Tell the accessibility layer that this process will
72        // run as the current user, i.e. run across users.
73        AccessibilityManager.createAsSharedAcrossUsers(this);
74
75        // Pick status bar or system bar.
76        IWindowManager wm = WindowManagerGlobal.getWindowManagerService();
77        try {
78            SERVICES[0] = wm.hasSystemNavBar()
79                    ? R.string.config_systemBarComponent
80                    : R.string.config_statusBarComponent;
81        } catch (RemoteException e) {
82            Slog.w(TAG, "Failing checking whether status bar can hide", e);
83        }
84
85        final int N = SERVICES.length;
86        mServices = new SystemUI[N];
87        for (int i=0; i<N; i++) {
88            Class cl = chooseClass(SERVICES[i]);
89            Slog.d(TAG, "loading: " + cl);
90            try {
91                mServices[i] = (SystemUI)cl.newInstance();
92            } catch (IllegalAccessException ex) {
93                throw new RuntimeException(ex);
94            } catch (InstantiationException ex) {
95                throw new RuntimeException(ex);
96            }
97            mServices[i].mContext = this;
98            Slog.d(TAG, "running: " + mServices[i]);
99            mServices[i].start();
100        }
101    }
102
103    @Override
104    public void onConfigurationChanged(Configuration newConfig) {
105        for (SystemUI ui: mServices) {
106            ui.onConfigurationChanged(newConfig);
107        }
108    }
109
110    /**
111     * Nobody binds to us.
112     */
113    @Override
114    public IBinder onBind(Intent intent) {
115        return null;
116    }
117
118    @Override
119    protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
120        if (args == null || args.length == 0) {
121            for (SystemUI ui: mServices) {
122                pw.println("dumping service: " + ui.getClass().getName());
123                ui.dump(fd, pw, args);
124            }
125        } else {
126            String svc = args[0];
127            for (SystemUI ui: mServices) {
128                String name = ui.getClass().getName();
129                if (name.endsWith(svc)) {
130                    ui.dump(fd, pw, args);
131                }
132            }
133        }
134    }
135}
136
137