SystemUIService.java revision 0ad460b087abbd4b523a2e61ff27b0bf6fb5be92 
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.util.Slog;
31
32public class SystemUIService extends Service {
33    static final String TAG = "SystemUIService";
34
35    /**
36     * The class names of the stuff to start.
37     */
38    final Object[] SERVICES = new Object[] {
39            R.string.config_statusBarComponent,
40            com.android.systemui.power.PowerUI.class,
41        };
42
43    /**
44     * Hold a reference on the stuff we start.
45     */
46    SystemUI[] mServices;
47
48    private Class chooseClass(Object o) {
49        if (o instanceof Integer) {
50            final String cl = getString((Integer)o);
51            try {
52                return getClassLoader().loadClass(cl);
53            } catch (ClassNotFoundException ex) {
54                throw new RuntimeException(ex);
55            }
56        } else if (o instanceof Class) {
57            return (Class)o;
58        } else {
59            throw new RuntimeException("Unknown system ui service: " + o);
60        }
61    }
62
63    @Override
64    public void onCreate() {
65        final int N = SERVICES.length;
66        mServices = new SystemUI[N];
67        for (int i=0; i<N; i++) {
68            Class cl = chooseClass(SERVICES[i]);
69            Slog.d(TAG, "loading: " + cl);
70            try {
71                mServices[i] = (SystemUI)cl.newInstance();
72            } catch (IllegalAccessException ex) {
73                throw new RuntimeException(ex);
74            } catch (InstantiationException ex) {
75                throw new RuntimeException(ex);
76            }
77            mServices[i].mContext = this;
78            Slog.d(TAG, "running: " + mServices[i]);
79            mServices[i].start();
80        }
81    }
82
83    @Override
84    public void onConfigurationChanged(Configuration newConfig) {
85        for (SystemUI ui: mServices) {
86            ui.onConfigurationChanged(newConfig);
87        }
88    }
89
90    /**
91     * Nobody binds to us.
92     */
93    @Override
94    public IBinder onBind(Intent intent) {
95        return null;
96    }
97
98    @Override
99    protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
100        if (checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
101                != PackageManager.PERMISSION_GRANTED) {
102            pw.println("Permission Denial: can't dump StatusBar from from pid="
103                    + Binder.getCallingPid()
104                    + ", uid=" + Binder.getCallingUid());
105            return;
106        }
107
108        if (args == null || args.length == 0) {
109            for (SystemUI ui: mServices) {
110                pw.println("dumping service: " + ui.getClass().getName());
111                ui.dump(fd, pw, args);
112            }
113        } else {
114            String svc = args[0];
115            for (SystemUI ui: mServices) {
116                String name = ui.getClass().getName();
117                if (name.endsWith(svc)) {
118                    ui.dump(fd, pw, args);
119                }
120            }
121        }
122    }
123}
124
125