Show Bluetooth HID Device connection status in Settings

* Add the HidDeviceProfile class, which wraps the BluetoothHidProfile in
Settings. HidDeviceProfile will be added to local Bluetooth profiles
once the HID Device Service connection is in use. This will allow the
connection status of HID Device profile to be displayed in Settings >
Connected devices > Bluetooth > Device details, and in the device list.
* Rename InputDeviceServiceListener to HidHostServiceListener to
eliminate consufion.

Bug: 69136526
Test: apps with HID Device.
Change-Id: I99bef6745ae58fe7f522432e7841a5910388a352

3 files changed, 215 insertions, 3 deletions

diff --git a/packages/SettingsLib/src/com/android/settingslib/bluetooth/HidDeviceProfile.java b/packages/SettingsLib/src/com/android/settingslib/bluetooth/HidDeviceProfile.java
new file mode 100644
index 000000000000..941964a57eb4
--- /dev/null
+++ b/packages/SettingsLib/src/com/android/settingslib/bluetooth/HidDeviceProfile.java
@@ -0,0 +1,200 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settingslib.bluetooth;
+
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothClass;
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.BluetoothHidDevice;
+import android.bluetooth.BluetoothProfile;
+import android.content.Context;
+import android.util.Log;
+
+import com.android.settingslib.R;
+
+import java.util.Collection;
+import java.util.List;
+
+/**
+ * HidProfile handles Bluetooth HID profile.
+ */
+public class HidDeviceProfile implements LocalBluetoothProfile {
+    private static final String TAG = "HidDeviceProfile";
+    // Order of this profile in device profiles list
+    private static final int ORDINAL = 18;
+    // HID Device Profile is always preferred.
+    private static final int PREFERRED_VALUE = -1;
+    private static final boolean DEBUG = true;
+
+    private final LocalBluetoothAdapter mLocalAdapter;
+    private final CachedBluetoothDeviceManager mDeviceManager;
+    private final LocalBluetoothProfileManager mProfileManager;
+    static final String NAME = "HID DEVICE";
+
+    private BluetoothHidDevice mService;
+    private boolean mIsProfileReady;
+
+    HidDeviceProfile(Context context, LocalBluetoothAdapter adapter,
+            CachedBluetoothDeviceManager deviceManager,
+            LocalBluetoothProfileManager profileManager) {
+        mLocalAdapter = adapter;
+        mDeviceManager = deviceManager;
+        mProfileManager = profileManager;
+        adapter.getProfileProxy(context, new HidDeviceServiceListener(),
+                BluetoothProfile.HID_DEVICE);
+    }
+
+    // These callbacks run on the main thread.
+    private final class HidDeviceServiceListener
+            implements BluetoothProfile.ServiceListener {
+
+        public void onServiceConnected(int profile, BluetoothProfile proxy) {
+            if (DEBUG) {
+                Log.d(TAG,"Bluetooth service connected :-)");
+            }
+            mService = (BluetoothHidDevice) proxy;
+            // We just bound to the service, so refresh the UI for any connected HID devices.
+            List<BluetoothDevice> deviceList = mService.getConnectedDevices();
+            for (BluetoothDevice nextDevice : deviceList) {
+                CachedBluetoothDevice device = mDeviceManager.findDevice(nextDevice);
+                // we may add a new device here, but generally this should not happen
+                if (device == null) {
+                    Log.w(TAG, "HidProfile found new device: " + nextDevice);
+                    device = mDeviceManager.addDevice(mLocalAdapter, mProfileManager, nextDevice);
+                }
+                Log.d(TAG, "Connection status changed: " + device);
+                device.onProfileStateChanged(HidDeviceProfile.this,
+                        BluetoothProfile.STATE_CONNECTED);
+                device.refresh();
+            }
+            mIsProfileReady = true;
+        }
+
+        public void onServiceDisconnected(int profile) {
+            if (DEBUG) {
+                Log.d(TAG, "Bluetooth service disconnected");
+            }
+            mIsProfileReady = false;
+        }
+    }
+
+    @Override
+    public boolean isProfileReady() {
+        return mIsProfileReady;
+    }
+
+    @Override
+    public boolean isConnectable() {
+        return true;
+    }
+
+    @Override
+    public boolean isAutoConnectable() {
+        return false;
+    }
+
+    @Override
+    public boolean connect(BluetoothDevice device) {
+        return false;
+    }
+
+    @Override
+    public boolean disconnect(BluetoothDevice device) {
+        if (mService == null) {
+            return false;
+        }
+        return mService.disconnect(device);
+    }
+
+    @Override
+    public int getConnectionStatus(BluetoothDevice device) {
+        if (mService == null) {
+            return BluetoothProfile.STATE_DISCONNECTED;
+        }
+        List<BluetoothDevice> deviceList = mService.getConnectedDevices();
+
+        return !deviceList.isEmpty() && deviceList.contains(device)
+                ? mService.getConnectionState(device)
+                : BluetoothProfile.STATE_DISCONNECTED;
+    }
+
+    @Override
+    public boolean isPreferred(BluetoothDevice device) {
+        return getConnectionStatus(device) != BluetoothProfile.STATE_DISCONNECTED;
+    }
+
+    @Override
+    public int getPreferred(BluetoothDevice device) {
+        return PREFERRED_VALUE;
+    }
+
+    @Override
+    public void setPreferred(BluetoothDevice device, boolean preferred) {
+        // if set preferred to false, then disconnect to the current device
+        if (!preferred) {
+            mService.disconnect(device);
+        }
+    }
+
+    @Override
+    public String toString() {
+        return NAME;
+    }
+
+    @Override
+    public int getOrdinal() {
+        return ORDINAL;
+    }
+
+    @Override
+    public int getNameResource(BluetoothDevice device) {
+        return R.string.bluetooth_profile_hid;
+    }
+
+    @Override
+    public int getSummaryResourceForDevice(BluetoothDevice device) {
+        final int state = getConnectionStatus(device);
+        switch (state) {
+            case BluetoothProfile.STATE_DISCONNECTED:
+                return R.string.bluetooth_hid_profile_summary_use_for;
+            case BluetoothProfile.STATE_CONNECTED:
+                return R.string.bluetooth_hid_profile_summary_connected;
+            default:
+                return Utils.getConnectionStateSummary(state);
+        }
+    }
+
+    @Override
+    public int getDrawableResource(BluetoothClass btClass) {
+        return R.drawable.ic_bt_misc_hid;
+    }
+
+    protected void finalize() {
+        if (DEBUG) {
+            Log.d(TAG, "finalize()");
+        }
+        if (mService != null) {
+            try {
+                BluetoothAdapter.getDefaultAdapter().closeProfileProxy(BluetoothProfile.HID_DEVICE,
+                        mService);
+                mService = null;
+            } catch (Throwable t) {
+                Log.w(TAG, "Error cleaning up HID proxy", t);
+            }
+        }
+    }
+}
diff --git a/packages/SettingsLib/src/com/android/settingslib/bluetooth/HidProfile.java b/packages/SettingsLib/src/com/android/settingslib/bluetooth/HidProfile.java
index 213002fb9726..93c4017fdaf8 100644
--- a/packages/SettingsLib/src/com/android/settingslib/bluetooth/HidProfile.java
+++ b/packages/SettingsLib/src/com/android/settingslib/bluetooth/HidProfile.java
@@ -48,7 +48,7 @@ public class HidProfile implements LocalBluetoothProfile {
     private static final int ORDINAL = 3;
 
     // These callbacks run on the main thread.
-    private final class InputDeviceServiceListener
+    private final class HidHostServiceListener
             implements BluetoothProfile.ServiceListener {
 
         public void onServiceConnected(int profile, BluetoothProfile proxy) {
@@ -86,7 +86,7 @@ public class HidProfile implements LocalBluetoothProfile {
         mLocalAdapter = adapter;
         mDeviceManager = deviceManager;
         mProfileManager = profileManager;
-        adapter.getProfileProxy(context, new InputDeviceServiceListener(),
+        adapter.getProfileProxy(context, new HidHostServiceListener(),
                 BluetoothProfile.HID_HOST);
     }
 
diff --git a/packages/SettingsLib/src/com/android/settingslib/bluetooth/LocalBluetoothProfileManager.java b/packages/SettingsLib/src/com/android/settingslib/bluetooth/LocalBluetoothProfileManager.java
index 34a099cb7ea0..5b202dc58579 100644
--- a/packages/SettingsLib/src/com/android/settingslib/bluetooth/LocalBluetoothProfileManager.java
+++ b/packages/SettingsLib/src/com/android/settingslib/bluetooth/LocalBluetoothProfileManager.java
@@ -22,6 +22,7 @@ import android.bluetooth.BluetoothDevice;
 import android.bluetooth.BluetoothHeadset;
 import android.bluetooth.BluetoothHeadsetClient;
 import android.bluetooth.BluetoothHearingAid;
+import android.bluetooth.BluetoothHidDevice;
 import android.bluetooth.BluetoothHidHost;
 import android.bluetooth.BluetoothMap;
 import android.bluetooth.BluetoothMapClient;
@@ -86,6 +87,7 @@ public class LocalBluetoothProfileManager {
     private MapProfile mMapProfile;
     private MapClientProfile mMapClientProfile;
     private final HidProfile mHidProfile;
+    private HidDeviceProfile mHidDeviceProfile;
     private OppProfile mOppProfile;
     private final PanProfile mPanProfile;
     private PbapClientProfile mPbapClientProfile;
@@ -123,7 +125,7 @@ public class LocalBluetoothProfileManager {
             updateLocalProfiles(uuids);
         }
 
-        // Always add HID and PAN profiles
+        // Always add HID host, HID device, and PAN profiles
         mHidProfile = new HidProfile(context, mLocalAdapter, mDeviceManager, this);
         addProfile(mHidProfile, HidProfile.NAME,
                 BluetoothHidHost.ACTION_CONNECTION_STATE_CHANGED);
@@ -132,6 +134,10 @@ public class LocalBluetoothProfileManager {
         addPanProfile(mPanProfile, PanProfile.NAME,
                 BluetoothPan.ACTION_CONNECTION_STATE_CHANGED);
 
+        mHidDeviceProfile = new HidDeviceProfile(context, mLocalAdapter, mDeviceManager, this);
+        addProfile(mHidDeviceProfile, HidDeviceProfile.NAME,
+                BluetoothHidDevice.ACTION_CONNECTION_STATE_CHANGED);
+
         if(DEBUG) Log.d(TAG, "Adding local MAP profile");
         if (mUseMapClient) {
             mMapClientProfile = new MapClientProfile(mContext, mLocalAdapter, mDeviceManager, this);
@@ -505,6 +511,12 @@ public class LocalBluetoothProfileManager {
             removedProfiles.remove(mHidProfile);
         }
 
+        if (mHidProfile != null && mHidDeviceProfile.getConnectionStatus(device)
+                != BluetoothProfile.STATE_DISCONNECTED) {
+            profiles.add(mHidDeviceProfile);
+            removedProfiles.remove(mHidDeviceProfile);
+        }
+
         if(isPanNapConnected)
             if(DEBUG) Log.d(TAG, "Valid PAN-NAP connection exists.");
         if ((BluetoothUuid.isUuidPresent(uuids, BluetoothUuid.NAP) &&