Add a rename dialog for paired Bluetooth devices

This adds an icon to the paired device details page which users can
click on to bring up a dialog for changing the display name for that
device.

We already had a dialog for changing the advertised name of the local
Bluetooth adapter that's used on the main Bluetooth settings page, so
I've made that abstract and created two new subclasses to encapsulate
the slight differences for this use case.

Bug: 62535241
Test: make RunSettingsRoboTests
Change-Id: I1c407f276e12aedf066a336e24b4ccd16d67c4df

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

@@ -0,0 +1,82 @@
+/*
+ * 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.settings.bluetooth;
+
+import android.bluetooth.BluetoothDevice;
+import android.content.Context;
+import android.os.Bundle;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.logging.nano.MetricsProto;
+import com.android.settings.R;
+import com.android.settingslib.bluetooth.CachedBluetoothDevice;
+import com.android.settingslib.bluetooth.LocalBluetoothManager;
+
+/** Provides a dialog for changing the display name of a remote bluetooth device. */
+public class RemoteDeviceNameDialogFragment extends BluetoothNameDialogFragment {
+    public static final String TAG = "RemoteDeviceName";
+    private static final String KEY_CACHED_DEVICE_ADDRESS = "cached_device";
+
+    private CachedBluetoothDevice mDevice;
+
+    public static RemoteDeviceNameDialogFragment newInstance(CachedBluetoothDevice device) {
+        Bundle args = new Bundle(1);
+        args.putString(KEY_CACHED_DEVICE_ADDRESS, device.getDevice().getAddress());
+        RemoteDeviceNameDialogFragment fragment = new RemoteDeviceNameDialogFragment();
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @VisibleForTesting
+    CachedBluetoothDevice getDevice(Context context) {
+        String deviceAddress = getArguments().getString(KEY_CACHED_DEVICE_ADDRESS);
+        LocalBluetoothManager manager = Utils.getLocalBtManager(context);
+        BluetoothDevice device = manager.getBluetoothAdapter().getRemoteDevice(deviceAddress);
+        return manager.getCachedDeviceManager().findDevice(device);
+    }
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        mDevice = getDevice(context);
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return MetricsProto.MetricsEvent.DIALOG_BLUETOOTH_PAIRED_DEVICE_RENAME;
+    }
+
+    @Override
+    protected int getDialogTitle() {
+        return R.string.bluetooth_device_name;
+    }
+
+    @Override
+    protected String getDeviceName() {
+        if (mDevice != null) {
+            return mDevice.getName();
+        }
+        return null;
+    }
+
+    @Override
+    protected void setDeviceName(String deviceName) {
+        if (mDevice != null) {
+            mDevice.setName(deviceName);
+        }
+    }
+}