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      1 /*
      2  * Copyright (C) 2014 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 com.android.bluetooth.mapclient;
     18 
     19 import java.io.IOException;
     20 import java.io.InputStream;
     21 import java.util.ArrayList;
     22 
     23 import javax.obex.ClientSession;
     24 import javax.obex.HeaderSet;
     25 /* Get a listing of subdirectories. */
     26 final class RequestGetFolderListing extends Request {
     27 
     28     private static final String TYPE = "x-obex/folder-listing";
     29 
     30     private FolderListing mResponse = null;
     31 
     32     public RequestGetFolderListing(int maxListCount, int listStartOffset) {
     33 
     34         if (maxListCount < 0 || maxListCount > 65535) {
     35             throw new IllegalArgumentException("maxListCount should be [0..65535]");
     36         }
     37 
     38         if (listStartOffset < 0 || listStartOffset > 65535) {
     39             throw new IllegalArgumentException("listStartOffset should be [0..65535]");
     40         }
     41 
     42         mHeaderSet.setHeader(HeaderSet.TYPE, TYPE);
     43 
     44         ObexAppParameters oap = new ObexAppParameters();
     45         // Allow GetFolderListing for maxListCount value 0 also.
     46         if (maxListCount >= 0) {
     47             oap.add(OAP_TAGID_MAX_LIST_COUNT, (short) maxListCount);
     48         }
     49 
     50         if (listStartOffset > 0) {
     51             oap.add(OAP_TAGID_START_OFFSET, (short) listStartOffset);
     52         }
     53 
     54         oap.addToHeaderSet(mHeaderSet);
     55     }
     56 
     57     @Override
     58     protected void readResponse(InputStream stream) {
     59         mResponse = new FolderListing(stream);
     60     }
     61 
     62     public ArrayList<String> getList() {
     63         if (mResponse == null) {
     64             return null;
     65         }
     66 
     67         return mResponse.getList();
     68     }
     69 
     70     @Override
     71     public void execute(ClientSession session) throws IOException {
     72         executeGet(session);
     73     }
     74 }
     75