Add 'Live Caption' preference for hearing aids device in Device details page

Bug: 225117933
Test: make RunSettingsRoboTests ROBOTEST_FILTER=BluetoothDetailsRelatedToolsControllerTest
Change-Id: Ic607fa7d10aa2049ab0852a86a57dd1d5d1ac7df

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

@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2022 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.content.Context;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceCategory;
+import androidx.preference.PreferenceFragmentCompat;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settingslib.bluetooth.CachedBluetoothDevice;
+import com.android.settingslib.core.lifecycle.Lifecycle;
+
+/**
+ * This class adds related tools preference.
+ */
+public class BluetoothDetailsRelatedToolsController extends BluetoothDetailsController{
+    private static final String KEY_RELATED_TOOLS_GROUP = "bluetooth_related_tools";
+    private static final String KEY_LIVE_CAPTION = "live_caption";
+
+    public BluetoothDetailsRelatedToolsController(Context context,
+            PreferenceFragmentCompat fragment, CachedBluetoothDevice device, Lifecycle lifecycle) {
+        super(context, fragment, device, lifecycle);
+        lifecycle.addObserver(this);
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return mCachedDevice.isHearingAidDevice();
+    }
+
+    @Override
+    protected void init(PreferenceScreen screen) {
+        if (!mCachedDevice.isHearingAidDevice()) {
+            return;
+        }
+
+        final PreferenceCategory preferenceCategory = screen.findPreference(getPreferenceKey());
+        final Preference liveCaptionPreference = screen.findPreference(KEY_LIVE_CAPTION);
+        if (!liveCaptionPreference.isVisible()) {
+            preferenceCategory.removePreference(liveCaptionPreference);
+        }
+
+        if (preferenceCategory.getPreferenceCount() == 0) {
+            screen.removePreference(preferenceCategory);
+        }
+    }
+
+    @Override
+    protected void refresh() {}
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_RELATED_TOOLS_GROUP;
+    }
+}