src/Tizen.Network.Nfc/Tizen.Network.Nfc/NfcP2pAdapter.cs

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
   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 using System;
  18 using System.Runtime.InteropServices;
  19 using System.Collections.Generic;
  20
  21 namespace Tizen.Network.Nfc
  22 {
  23     /// <summary>
  24     /// A class for NFC P2P(Peer to Peer) mode. It allows applications to handle P2P informations.
  25     /// </summary>
  26     /// <since_tizen> 3 </since_tizen>
  27     /// <privilege>http://tizen.org/privilege/nfc</privilege>
  28     public class NfcP2pAdapter : IDisposable
  29     {
  30         private NfcP2p _p2pTarget;
  31         private bool disposed = false;
  32
  33         private event EventHandler<P2pTargetDiscoveredEventArgs> _p2pTargetDiscovered;
  34
  35         private Interop.Nfc.P2pTargetDiscoveredCallback _p2pTargetDiscoveredCallback;
  36
  37         /// <summary>
  38         /// The event for  receiving NFC peer-to-peer target discovered notification.
  39         /// </summary>
  40         /// <since_tizen> 3 </since_tizen>
  41         public event EventHandler<P2pTargetDiscoveredEventArgs> P2pTargetDiscovered
  42         {
  43             add
  44             {
  45                 _p2pTargetDiscovered += value;
  46             }
  47             remove
  48             {
  49                 _p2pTargetDiscovered -= value;
  50             }
  51         }
  52
  53         internal NfcP2pAdapter()
  54         {
  55             RegisterP2pTargetDiscoveredEvent();
  56         }
  57
  58         ~NfcP2pAdapter()
  59         {
  60             Dispose(false);
  61         }
  62
  63         public void Dispose()
  64         {
  65             Dispose(true);
  66             GC.SuppressFinalize(this);
  67         }
  68
  69         private void Dispose(bool disposing)
  70         {
  71             if (disposed)
  72                 return;
  73
  74             if (disposing)
  75             {
  76                 // Free managed objects.
  77                 UnregisterP2pTargetDiscoveredEvent();
  78             }
  79             //Free unmanaged objects
  80             disposed = true;
  81         }
  82
  83         /// <summary>
  84         /// Gets current connected p2p target.
  85         /// </summary>
  86         /// <since_tizen> 3 </since_tizen>
  87         /// <returns>NfcP2p object.</returns>
  88         /// <privilege>http://tizen.org/privilege/nfc</privilege>
  89         /// <exception cref="NotSupportedException">Thrown when Nfc is not supported.</exception>
  90         /// <exception cref="InvalidOperationException">Thrown when the method failed due to invalid operation.</exception>
  91         public NfcP2p GetConnectedTarget()
  92         {
  93             IntPtr targetHandle = IntPtr.Zero;
  94             int ret = Interop.Nfc.GetConnectedTarget(out targetHandle);
  95
  96             if (ret != (int)NfcError.None)
  97             {
  98                 Log.Error(Globals.LogTag, "Failed to get connected p2p target, Error - " + (NfcError)ret);
  99                 NfcErrorFactory.ThrowNfcException(ret);
 100             }
 101             _p2pTarget = new NfcP2p(targetHandle);
 102
 103             return _p2pTarget;
 104         }
 105
 106         private void RegisterP2pTargetDiscoveredEvent()
 107         {
 108             _p2pTargetDiscoveredCallback = (int type, IntPtr p2pTargetHandle, IntPtr userData) =>
 109             {
 110                 NfcDiscoveredType tagType = (NfcDiscoveredType)type;
 111                 P2pTargetDiscoveredEventArgs e = new P2pTargetDiscoveredEventArgs(tagType, p2pTargetHandle);
 112                 _p2pTargetDiscovered.SafeInvoke(null, e);
 113             };
 114
 115             int ret = Interop.Nfc.SetP2pTargetDiscoveredCallback(_p2pTargetDiscoveredCallback, IntPtr.Zero);
 116             if (ret != (int)NfcError.None)
 117             {
 118                 Log.Error(Globals.LogTag, "Failed to set p2p target discovered callback, Error - " + (NfcError)ret);
 119             }
 120         }
 121
 122         private void UnregisterP2pTargetDiscoveredEvent()
 123         {
 124             Interop.Nfc.UnsetP2pTargetDiscoveredCallback();
 125         }
 126     }
 127 }