[Audiosharing] Add calls and alarms device picker when sharing.

Flagged with enable_le_audio_sharing

Bug: 305620450
Test: Manual
Change-Id: I211bbd83e29a1ea865c3e368f0fcacf3a98255e9

src/com/android/settings/connecteddevice/audiosharing/CallsAndAlarmsPreferenceController.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2023 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.connecteddevice.audiosharing;
+
+import android.content.Context;
+import android.util.Log;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.flags.Flags;
+
+/** PreferenceController to control the dialog to choose the active device for calls and alarms */
+public class CallsAndAlarmsPreferenceController extends BasePreferenceController {
+
+    private static final String TAG = "CallsAndAlarmsPreferenceController";
+
+    private static final String PREF_KEY = "calls_and_alarms";
+
+    private Preference mPreference;
+    private DashboardFragment mFragment;
+
+    public CallsAndAlarmsPreferenceController(Context context) {
+        super(context, PREF_KEY);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return Flags.enableLeAudioSharing() ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return PREF_KEY;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreference = screen.findPreference(getPreferenceKey());
+        mPreference.setOnPreferenceClickListener(
+                preference -> {
+                    if (mFragment != null) {
+                        CallsAndAlarmsDialogFragment.show(mFragment);
+                    } else {
+                        Log.w(TAG, "Dialog fail to show due to null host.");
+                    }
+                    return true;
+                });
+    }
+
+    /**
+     * Initialize the controller.
+     *
+     * @param fragment The fragment to host the {@link CallsAndAlarmsDialogFragment} dialog.
+     */
+    public void init(DashboardFragment fragment) {
+        this.mFragment = fragment;
+    }
+}