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