1/*
2 * Copyright (C) 2012 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
17package com.android.settingslib.bluetooth;
18
19import android.bluetooth.BluetoothAdapter;
20import android.bluetooth.BluetoothClass;
21import android.bluetooth.BluetoothDevice;
22import android.bluetooth.BluetoothInputDevice;
23import android.bluetooth.BluetoothProfile;
24import android.content.Context;
25import android.util.Log;
26
27import com.android.settingslib.R;
28
29import java.util.List;
30
31/**
32 * HidProfile handles Bluetooth HID profile.
33 */
34public final class HidProfile implements LocalBluetoothProfile {
35    private static final String TAG = "HidProfile";
36    private static boolean V = true;
37
38    private BluetoothInputDevice mService;
39    private boolean mIsProfileReady;
40
41    private final LocalBluetoothAdapter mLocalAdapter;
42    private final CachedBluetoothDeviceManager mDeviceManager;
43    private final LocalBluetoothProfileManager mProfileManager;
44
45    static final String NAME = "HID";
46
47    // Order of this profile in device profiles list
48    private static final int ORDINAL = 3;
49
50    // These callbacks run on the main thread.
51    private final class InputDeviceServiceListener
52            implements BluetoothProfile.ServiceListener {
53
54        public void onServiceConnected(int profile, BluetoothProfile proxy) {
55            if (V) Log.d(TAG,"Bluetooth service connected");
56            mService = (BluetoothInputDevice) proxy;
57            // We just bound to the service, so refresh the UI for any connected HID devices.
58            List<BluetoothDevice> deviceList = mService.getConnectedDevices();
59            while (!deviceList.isEmpty()) {
60                BluetoothDevice nextDevice = deviceList.remove(0);
61                CachedBluetoothDevice device = mDeviceManager.findDevice(nextDevice);
62                // we may add a new device here, but generally this should not happen
63                if (device == null) {
64                    Log.w(TAG, "HidProfile found new device: " + nextDevice);
65                    device = mDeviceManager.addDevice(mLocalAdapter, mProfileManager, nextDevice);
66                }
67                device.onProfileStateChanged(HidProfile.this, BluetoothProfile.STATE_CONNECTED);
68                device.refresh();
69            }
70            mIsProfileReady=true;
71        }
72
73        public void onServiceDisconnected(int profile) {
74            if (V) Log.d(TAG,"Bluetooth service disconnected");
75            mIsProfileReady=false;
76        }
77    }
78
79    public boolean isProfileReady() {
80        return mIsProfileReady;
81    }
82
83    HidProfile(Context context, LocalBluetoothAdapter adapter,
84        CachedBluetoothDeviceManager deviceManager,
85        LocalBluetoothProfileManager profileManager) {
86        mLocalAdapter = adapter;
87        mDeviceManager = deviceManager;
88        mProfileManager = profileManager;
89        adapter.getProfileProxy(context, new InputDeviceServiceListener(),
90                BluetoothProfile.INPUT_DEVICE);
91    }
92
93    public boolean isConnectable() {
94        return true;
95    }
96
97    public boolean isAutoConnectable() {
98        return true;
99    }
100
101    public boolean connect(BluetoothDevice device) {
102        if (mService == null) return false;
103        return mService.connect(device);
104    }
105
106    public boolean disconnect(BluetoothDevice device) {
107        if (mService == null) return false;
108        return mService.disconnect(device);
109    }
110
111    public int getConnectionStatus(BluetoothDevice device) {
112        if (mService == null) {
113            return BluetoothProfile.STATE_DISCONNECTED;
114        }
115        List<BluetoothDevice> deviceList = mService.getConnectedDevices();
116
117        return !deviceList.isEmpty() && deviceList.get(0).equals(device)
118                ? mService.getConnectionState(device)
119                : BluetoothProfile.STATE_DISCONNECTED;
120    }
121
122    public boolean isPreferred(BluetoothDevice device) {
123        if (mService == null) return false;
124        return mService.getPriority(device) > BluetoothProfile.PRIORITY_OFF;
125    }
126
127    public int getPreferred(BluetoothDevice device) {
128        if (mService == null) return BluetoothProfile.PRIORITY_OFF;
129        return mService.getPriority(device);
130    }
131
132    public void setPreferred(BluetoothDevice device, boolean preferred) {
133        if (mService == null) return;
134        if (preferred) {
135            if (mService.getPriority(device) < BluetoothProfile.PRIORITY_ON) {
136                mService.setPriority(device, BluetoothProfile.PRIORITY_ON);
137            }
138        } else {
139            mService.setPriority(device, BluetoothProfile.PRIORITY_OFF);
140        }
141    }
142
143    public String toString() {
144        return NAME;
145    }
146
147    public int getOrdinal() {
148        return ORDINAL;
149    }
150
151    public int getNameResource(BluetoothDevice device) {
152        // TODO: distinguish between keyboard and mouse?
153        return R.string.bluetooth_profile_hid;
154    }
155
156    public int getSummaryResourceForDevice(BluetoothDevice device) {
157        int state = getConnectionStatus(device);
158        switch (state) {
159            case BluetoothProfile.STATE_DISCONNECTED:
160                return R.string.bluetooth_hid_profile_summary_use_for;
161
162            case BluetoothProfile.STATE_CONNECTED:
163                return R.string.bluetooth_hid_profile_summary_connected;
164
165            default:
166                return Utils.getConnectionStateSummary(state);
167        }
168    }
169
170    public int getDrawableResource(BluetoothClass btClass) {
171        if (btClass == null) {
172            return R.drawable.ic_lockscreen_ime;
173        }
174        return getHidClassDrawable(btClass);
175    }
176
177    public static int getHidClassDrawable(BluetoothClass btClass) {
178        switch (btClass.getDeviceClass()) {
179            case BluetoothClass.Device.PERIPHERAL_KEYBOARD:
180            case BluetoothClass.Device.PERIPHERAL_KEYBOARD_POINTING:
181                return R.drawable.ic_lockscreen_ime;
182            case BluetoothClass.Device.PERIPHERAL_POINTING:
183                return R.drawable.ic_bt_pointing_hid;
184            default:
185                return R.drawable.ic_bt_misc_hid;
186        }
187    }
188
189    protected void finalize() {
190        if (V) Log.d(TAG, "finalize()");
191        if (mService != null) {
192            try {
193                BluetoothAdapter.getDefaultAdapter().closeProfileProxy(BluetoothProfile.INPUT_DEVICE,
194                                                                       mService);
195                mService = null;
196            }catch (Throwable t) {
197                Log.w(TAG, "Error cleaning up HID proxy", t);
198            }
199        }
200    }
201}
202