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