Add a stylus controller to Bluetooth Device Details.

Feature is currently flagged behing SETTINGS_SHOW_STYLUS_PREFERENCES.

Bug: 251201006
Test: SettingsRoboTests StylusDevicesControllerTest
DD: go/stylus-connected-devices-doc
Change-Id: I438b7fe5ca1c94f9dfb506c8918d0e6cb005ca33

src/com/android/settings/bluetooth/BluetoothDeviceDetailsFragment.java

@@ -23,12 +23,15 @@ import android.app.settings.SettingsEnums;
 import android.bluetooth.BluetoothDevice;
 import android.content.Context;
 import android.content.res.TypedArray;
+import android.hardware.input.InputManager;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.UserManager;
 import android.provider.DeviceConfig;
 import android.text.TextUtils;
+import android.util.FeatureFlagUtils;
 import android.util.Log;
+import android.view.InputDevice;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -37,9 +40,11 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.view.ViewTreeObserver;
 
+import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 
 import com.android.settings.R;
+import com.android.settings.connecteddevice.stylus.StylusDevicesController;
 import com.android.settings.core.SettingsUIDeviceConfig;
 import com.android.settings.dashboard.RestrictedDashboardFragment;
 import com.android.settings.overlay.FeatureFactory;
@@ -72,6 +77,7 @@ public class BluetoothDeviceDetailsFragment extends RestrictedDashboardFragment
         CachedBluetoothDevice getDevice(String deviceAddress);
 
         LocalBluetoothManager getManager(Context context);
+
         UserManager getUserManager();
     }
 
@@ -85,6 +91,9 @@ public class BluetoothDeviceDetailsFragment extends RestrictedDashboardFragment
     @VisibleForTesting
     CachedBluetoothDevice mCachedDevice;
 
+    @Nullable
+    InputDevice mInputDevice;
+
     private UserManager mUserManager;
 
     public BluetoothDeviceDetailsFragment() {
@@ -118,6 +127,21 @@ public class BluetoothDeviceDetailsFragment extends RestrictedDashboardFragment
         return getSystemService(UserManager.class);
     }
 
+    @Nullable
+    @VisibleForTesting
+    InputDevice getInputDevice(Context context) {
+        InputManager im = context.getSystemService(InputManager.class);
+
+        for (int deviceId : im.getInputDeviceIds()) {
+            String btAddress = im.getInputDeviceBluetoothAddress(deviceId);
+
+            if (btAddress != null && btAddress.equals(mDeviceAddress)) {
+                return im.getInputDevice(deviceId);
+            }
+        }
+        return null;
+    }
+
     public static BluetoothDeviceDetailsFragment newInstance(String deviceAddress) {
         Bundle args = new Bundle(1);
         args.putString(KEY_DEVICE_ADDRESS, deviceAddress);
@@ -132,6 +156,12 @@ public class BluetoothDeviceDetailsFragment extends RestrictedDashboardFragment
         mManager = getLocalBluetoothManager(context);
         mCachedDevice = getCachedDevice(mDeviceAddress);
         mUserManager = getUserManager();
+
+        if (FeatureFlagUtils.isEnabled(context,
+                FeatureFlagUtils.SETTINGS_SHOW_STYLUS_PREFERENCES)) {
+            mInputDevice = getInputDevice(context);
+        }
+
         super.onAttach(context);
         if (mCachedDevice == null) {
             // Close this page if device is null with invalid device mac address
@@ -191,6 +221,12 @@ public class BluetoothDeviceDetailsFragment extends RestrictedDashboardFragment
                 }
             };
 
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setTitleForInputDevice();
+    }
+
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
             Bundle savedInstanceState) {
@@ -269,6 +305,7 @@ public class BluetoothDeviceDetailsFragment extends RestrictedDashboardFragment
                     mCachedDevice, lifecycle));
             controllers.add(new BluetoothDetailsMacAddressController(context, this, mCachedDevice,
                     lifecycle));
+            controllers.add(new StylusDevicesController(context, mInputDevice, lifecycle));
             controllers.add(new BluetoothDetailsRelatedToolsController(context, this, mCachedDevice,
                     lifecycle));
             controllers.add(new BluetoothDetailsPairOtherController(context, this, mCachedDevice,
@@ -289,4 +326,16 @@ public class BluetoothDeviceDetailsFragment extends RestrictedDashboardFragment
         resolvedAttributes.recycle();
         return width;
     }
+
+    @VisibleForTesting
+    void setTitleForInputDevice() {
+        // TODO(b/254835745) once source filter for bt stylus merged
+        // && mInputDevice.supportsSource(InputDevice.SOURCE_BLUETOOTH_STYLUS))
+        if (mInputDevice != null) {
+            // This will override the default R.string.device_details_title "Device Details"
+            // that will show on non-stylus bluetooth devices.
+            // That title is set via the manifest and also from BluetoothDeviceUpdater.
+            getActivity().setTitle(getContext().getString(R.string.stylus_device_details_title));
+        }
+    }
 }