1/*
2 * Copyright (C) 2007 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 android.ddm;
18
19import org.apache.harmony.dalvik.ddmc.Chunk;
20import org.apache.harmony.dalvik.ddmc.ChunkHandler;
21import org.apache.harmony.dalvik.ddmc.DdmServer;
22import android.util.Log;
23import java.nio.ByteBuffer;
24
25
26/**
27 * Track our app name.  We don't (currently) handle any inbound packets.
28 */
29public class DdmHandleAppName extends ChunkHandler {
30
31    public static final int CHUNK_APNM = type("APNM");
32
33    private volatile static String mAppName = "";
34
35    private static DdmHandleAppName mInstance = new DdmHandleAppName();
36
37
38    /* singleton, do not instantiate */
39    private DdmHandleAppName() {}
40
41    /**
42     * Register for the messages we're interested in.
43     */
44    public static void register() {}
45
46    /**
47     * Called when the DDM server connects.  The handler is allowed to
48     * send messages to the server.
49     */
50    public void connected() {}
51
52    /**
53     * Called when the DDM server disconnects.  Can be used to disable
54     * periodic transmissions or clean up saved state.
55     */
56    public void disconnected() {}
57
58    /**
59     * Handle a chunk of data.
60     */
61    public Chunk handleChunk(Chunk request) {
62        return null;
63    }
64
65
66
67    /**
68     * Set the application name.  Called when we get named, which may be
69     * before or after DDMS connects.  For the latter we need to send up
70     * an APNM message.
71     */
72    public static void setAppName(String name, int userId) {
73        if (name == null || name.length() == 0)
74            return;
75
76        mAppName = name;
77
78        // if DDMS is already connected, send the app name up
79        sendAPNM(name, userId);
80    }
81
82    public static String getAppName() {
83        return mAppName;
84    }
85
86    /*
87     * Send an APNM (APplication NaMe) chunk.
88     */
89    private static void sendAPNM(String appName, int userId) {
90        if (false)
91            Log.v("ddm", "Sending app name");
92
93        ByteBuffer out = ByteBuffer.allocate(
94                            4 /* appName's length */
95                            + appName.length()*2 /* appName */
96                            + 4 /* userId */);
97        out.order(ChunkHandler.CHUNK_ORDER);
98        out.putInt(appName.length());
99        putString(out, appName);
100        out.putInt(userId);
101
102        Chunk chunk = new Chunk(CHUNK_APNM, out);
103        DdmServer.sendChunk(chunk);
104    }
105
106}
107
108