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      1 /*
      2  * Copyright (C) 2011 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.settings.bluetooth;
     18 
     19 import android.bluetooth.BluetoothAdapter;
     20 import android.bluetooth.BluetoothClass;
     21 import android.bluetooth.BluetoothDevice;
     22 import android.bluetooth.BluetoothPan;
     23 import android.bluetooth.BluetoothProfile;
     24 import android.content.Context;
     25 import android.util.Log;
     26 
     27 import com.android.settings.R;
     28 
     29 import java.util.HashMap;
     30 import java.util.List;
     31 
     32 /**
     33  * PanProfile handles Bluetooth PAN profile (NAP and PANU).
     34  */
     35 final class PanProfile implements LocalBluetoothProfile {
     36     private static final String TAG = "PanProfile";
     37     private static boolean V = true;
     38 
     39     private BluetoothPan mService;
     40     private boolean mIsProfileReady;
     41 
     42     // Tethering direction for each device
     43     private final HashMap<BluetoothDevice, Integer> mDeviceRoleMap =
     44             new HashMap<BluetoothDevice, Integer>();
     45 
     46     static final String NAME = "PAN";
     47 
     48     // Order of this profile in device profiles list
     49     private static final int ORDINAL = 4;
     50 
     51     // These callbacks run on the main thread.
     52     private final class PanServiceListener
     53             implements BluetoothProfile.ServiceListener {
     54 
     55         public void onServiceConnected(int profile, BluetoothProfile proxy) {
     56             if (V) Log.d(TAG,"Bluetooth service connected");
     57             mService = (BluetoothPan) proxy;
     58             mIsProfileReady=true;
     59         }
     60 
     61         public void onServiceDisconnected(int profile) {
     62             if (V) Log.d(TAG,"Bluetooth service disconnected");
     63             mIsProfileReady=false;
     64         }
     65     }
     66 
     67     public boolean isProfileReady() {
     68         return mIsProfileReady;
     69     }
     70 
     71     PanProfile(Context context) {
     72         BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
     73         adapter.getProfileProxy(context, new PanServiceListener(),
     74                 BluetoothProfile.PAN);
     75     }
     76 
     77     public boolean isConnectable() {
     78         return true;
     79     }
     80 
     81     public boolean isAutoConnectable() {
     82         return false;
     83     }
     84 
     85     public boolean connect(BluetoothDevice device) {
     86         if (mService == null) return false;
     87         List<BluetoothDevice> sinks = mService.getConnectedDevices();
     88         if (sinks != null) {
     89             for (BluetoothDevice sink : sinks) {
     90                 mService.disconnect(sink);
     91             }
     92         }
     93         return mService.connect(device);
     94     }
     95 
     96     public boolean disconnect(BluetoothDevice device) {
     97         if (mService == null) return false;
     98         return mService.disconnect(device);
     99     }
    100 
    101     public int getConnectionStatus(BluetoothDevice device) {
    102         if (mService == null) {
    103             return BluetoothProfile.STATE_DISCONNECTED;
    104         }
    105         return mService.getConnectionState(device);
    106     }
    107 
    108     public boolean isPreferred(BluetoothDevice device) {
    109         // return current connection status so profile checkbox is set correctly
    110         return getConnectionStatus(device) == BluetoothProfile.STATE_CONNECTED;
    111     }
    112 
    113     public int getPreferred(BluetoothDevice device) {
    114         return -1;
    115     }
    116 
    117     public void setPreferred(BluetoothDevice device, boolean preferred) {
    118         // ignore: isPreferred is always true for PAN
    119     }
    120 
    121     public String toString() {
    122         return NAME;
    123     }
    124 
    125     public int getOrdinal() {
    126         return ORDINAL;
    127     }
    128 
    129     public int getNameResource(BluetoothDevice device) {
    130         if (isLocalRoleNap(device)) {
    131             return R.string.bluetooth_profile_pan_nap;
    132         } else {
    133             return R.string.bluetooth_profile_pan;
    134         }
    135     }
    136 
    137     public int getSummaryResourceForDevice(BluetoothDevice device) {
    138         int state = getConnectionStatus(device);
    139         switch (state) {
    140             case BluetoothProfile.STATE_DISCONNECTED:
    141                 return R.string.bluetooth_pan_profile_summary_use_for;
    142 
    143             case BluetoothProfile.STATE_CONNECTED:
    144                 if (isLocalRoleNap(device)) {
    145                     return R.string.bluetooth_pan_nap_profile_summary_connected;
    146                 } else {
    147                     return R.string.bluetooth_pan_user_profile_summary_connected;
    148                 }
    149 
    150             default:
    151                 return Utils.getConnectionStateSummary(state);
    152         }
    153     }
    154 
    155     public int getDrawableResource(BluetoothClass btClass) {
    156         return R.drawable.ic_bt_network_pan;
    157     }
    158 
    159     // Tethering direction determines UI strings.
    160     void setLocalRole(BluetoothDevice device, int role) {
    161         mDeviceRoleMap.put(device, role);
    162     }
    163 
    164     boolean isLocalRoleNap(BluetoothDevice device) {
    165         if (mDeviceRoleMap.containsKey(device)) {
    166             return mDeviceRoleMap.get(device) == BluetoothPan.LOCAL_NAP_ROLE;
    167         } else {
    168             return false;
    169         }
    170     }
    171 
    172     protected void finalize() {
    173         if (V) Log.d(TAG, "finalize()");
    174         if (mService != null) {
    175             try {
    176                 BluetoothAdapter.getDefaultAdapter().closeProfileProxy(BluetoothProfile.PAN, mService);
    177                 mService = null;
    178             }catch (Throwable t) {
    179                 Log.w(TAG, "Error cleaning up PAN proxy", t);
    180             }
    181         }
    182     }
    183 }
    184