Separate category controller out of HearingDeviceControlsController

We're going to add more different device controls (such as hearing aids presets, volume offset controls or microphone volume controls) into "device_controls_general" PreferenceCategory. It's better to keep the category controller separated from the child controller to better maintain the visibility of the whole category and have a clearer stucture of these controllers.

Bug: 300015207
Test: atest BluetoothDetailsHearingDeviceControllerTest
Test: atest BluetoothDetailsHearingDeviceSettingsControllerTest
Test: atest BluetoothDeviceDetailsFragmentTest
Change-Id: I7f35b02a1120aefa8307e500f7abfce3b8055fbf

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

@@ -0,0 +1,105 @@
+/*
+ * 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 static com.android.settings.bluetooth.BluetoothDetailsHearingDeviceController.KEY_HEARING_DEVICE_GROUP;
+
+import android.content.Context;
+import android.text.TextUtils;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceCategory;
+import androidx.preference.PreferenceFragmentCompat;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.accessibility.AccessibilityHearingAidsFragment;
+import com.android.settings.accessibility.ArrowPreference;
+import com.android.settings.core.SubSettingLauncher;
+import com.android.settingslib.bluetooth.CachedBluetoothDevice;
+import com.android.settingslib.core.lifecycle.Lifecycle;
+
+import com.google.common.annotations.VisibleForTesting;
+
+/**
+ * The controller of the hearing device settings to launch Hearing device page.
+ */
+public class BluetoothDetailsHearingDeviceSettingsController extends BluetoothDetailsController
+        implements Preference.OnPreferenceClickListener {
+
+    @VisibleForTesting
+    static final String KEY_HEARING_DEVICE_SETTINGS = "hearing_device_settings";
+
+    public BluetoothDetailsHearingDeviceSettingsController(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 (!isAvailable()) {
+            return;
+        }
+        final PreferenceCategory group = screen.findPreference(KEY_HEARING_DEVICE_GROUP);
+        final Preference pref = createHearingDeviceSettingsPreference(group.getContext());
+        group.addPreference(pref);
+    }
+
+    @Override
+    protected void refresh() {
+
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_HEARING_DEVICE_SETTINGS;
+    }
+
+    @Override
+    public boolean onPreferenceClick(Preference preference) {
+        if (TextUtils.equals(preference.getKey(), KEY_HEARING_DEVICE_SETTINGS)) {
+            launchAccessibilityHearingDeviceSettings();
+            return true;
+        }
+        return false;
+    }
+
+    private Preference createHearingDeviceSettingsPreference(Context context) {
+        final ArrowPreference preference = new ArrowPreference(context);
+        preference.setKey(KEY_HEARING_DEVICE_SETTINGS);
+        preference.setTitle(context.getString(R.string.bluetooth_hearing_device_settings_title));
+        preference.setSummary(
+                context.getString(R.string.bluetooth_hearing_device_settings_summary));
+        preference.setOnPreferenceClickListener(this);
+
+        return preference;
+    }
+
+    private void launchAccessibilityHearingDeviceSettings() {
+        new SubSettingLauncher(mContext)
+                .setDestination(AccessibilityHearingAidsFragment.class.getName())
+                .setSourceMetricsCategory(
+                        ((BluetoothDeviceDetailsFragment) mFragment).getMetricsCategory())
+                .launch();
+    }
+}