[Audiosharing] Hide / show audio streams category.

Only show when there is an active LE buds connecting, and the source is
not currently broadcasting.

Bug: 308368124
Test: Manual
Change-Id: I2cc172a66648901ac8a7e49c5aac734b6bbc7e33

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

@@ -64,7 +64,7 @@ public abstract class AudioSharingBasePreferenceController extends BasePreferenc
         mPreference.setVisible(isVisible);
     }
 
-    private boolean isBroadcasting() {
+    protected boolean isBroadcasting() {
         return mBroadcast != null && mBroadcast.isEnabled(null);
     }
 }

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

@@ -22,6 +22,7 @@ import android.os.Bundle;
 
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
+import com.android.settings.connecteddevice.audiosharing.audiostreams.AudioStreamsCategoryController;
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.widget.SettingsMainSwitchBar;
 
@@ -34,6 +35,7 @@ public class AudioSharingDashboardFragment extends DashboardFragment
     private AudioSharingDeviceVolumeGroupController mAudioSharingDeviceVolumeGroupController;
     private CallsAndAlarmsPreferenceController mCallsAndAlarmsPreferenceController;
     private AudioSharingNamePreferenceController mAudioSharingNamePreferenceController;
+    private AudioStreamsCategoryController mAudioStreamsCategoryController;
 
     public AudioSharingDashboardFragment() {
         super();
@@ -73,6 +75,7 @@ public class AudioSharingDashboardFragment extends DashboardFragment
         mCallsAndAlarmsPreferenceController = use(CallsAndAlarmsPreferenceController.class);
         mCallsAndAlarmsPreferenceController.init(this);
         mAudioSharingNamePreferenceController = use(AudioSharingNamePreferenceController.class);
+        mAudioStreamsCategoryController = use(AudioStreamsCategoryController.class);
     }
 
     @Override
@@ -98,5 +101,6 @@ public class AudioSharingDashboardFragment extends DashboardFragment
         mAudioSharingDeviceVolumeGroupController.updateVisibility(isVisible);
         mCallsAndAlarmsPreferenceController.updateVisibility(isVisible);
         mAudioSharingNamePreferenceController.updateVisibility(isVisible);
+        mAudioStreamsCategoryController.updateVisibility(isVisible);
     }
 }

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

@@ -34,6 +34,7 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.stream.Collectors;
 
 public class AudioSharingUtils {
@@ -229,6 +230,31 @@ public class AudioSharingUtils {
         return false;
     }
 
+    /**
+     * Retrieves the one and only active Bluetooth LE Audio sink device, regardless if the device is
+     * currently in an audio sharing session.
+     *
+     * @param manager The LocalBluetoothManager instance used to fetch connected devices.
+     * @return An Optional containing the active LE Audio device, or an empty Optional if not found.
+     */
+    public static Optional<CachedBluetoothDevice> getActiveSinkOnAssistant(
+            LocalBluetoothManager manager) {
+        if (manager == null) {
+            Log.w(TAG, "getActiveSinksOnAssistant(): LocalBluetoothManager is null!");
+            return Optional.empty();
+        }
+        var groupedDevices = AudioSharingUtils.fetchConnectedDevicesByGroupId(manager);
+        var leadDevices =
+                AudioSharingUtils.buildOrderedConnectedLeadDevices(manager, groupedDevices, false);
+
+        if (!leadDevices.isEmpty() && AudioSharingUtils.isActiveLeAudioDevice(leadDevices.get(0))) {
+            return Optional.of(leadDevices.get(0));
+        } else {
+            Log.w(TAG, "getActiveSinksOnAssistant(): No active lead device!");
+        }
+        return Optional.empty();
+    }
+
     /** Toast message on main thread. */
     public static void toastMessage(Context context, String message) {
         ThreadUtils.postOnMainThread(

src/com/android/settings/connecteddevice/audiosharing/audiostreams/AudioStreamsActiveDeviceSummaryUpdater.java

@@ -30,8 +30,6 @@ import com.android.settingslib.bluetooth.CachedBluetoothDevice;
 import com.android.settingslib.bluetooth.LocalBluetoothManager;
 import com.android.settingslib.utils.ThreadUtils;
 
-import java.util.Optional;
-
 public class AudioStreamsActiveDeviceSummaryUpdater implements BluetoothCallback {
     private static final String TAG = "AudioStreamsActiveDeviceSummaryUpdater";
     private static final boolean DEBUG = BluetoothUtils.D;
@@ -82,31 +80,13 @@ public class AudioStreamsActiveDeviceSummaryUpdater implements BluetoothCallback
     }
 
     private String getSummary() {
-        var activeSink = getActiveSinkOnAssistant(mBluetoothManager);
+        var activeSink = AudioSharingUtils.getActiveSinkOnAssistant(mBluetoothManager);
         if (activeSink.isEmpty()) {
             return "No active LE Audio device";
         }
         return activeSink.get().getName();
     }
 
-    private static Optional<CachedBluetoothDevice> getActiveSinkOnAssistant(
-            LocalBluetoothManager manager) {
-        if (manager == null) {
-            Log.w(TAG, "getActiveSinksOnAssistant(): LocalBluetoothManager is null!");
-            return Optional.empty();
-        }
-        var groupedDevices = AudioSharingUtils.fetchConnectedDevicesByGroupId(manager);
-        var leadDevices =
-                AudioSharingUtils.buildOrderedConnectedLeadDevices(manager, groupedDevices, false);
-
-        if (!leadDevices.isEmpty() && AudioSharingUtils.isActiveLeAudioDevice(leadDevices.get(0))) {
-            return Optional.of(leadDevices.get(0));
-        } else {
-            Log.w(TAG, "getActiveSinksOnAssistant(): No active lead device!");
-        }
-        return Optional.empty();
-    }
-
     /** Interface definition for a callback to be invoked when the summary has been changed. */
     interface OnSummaryChangeListener {
         /**

src/com/android/settings/connecteddevice/audiosharing/audiostreams/AudioStreamsCategoryController.java

@@ -16,15 +16,64 @@
 
 package com.android.settings.connecteddevice.audiosharing.audiostreams;
 
+import android.annotation.Nullable;
+import android.bluetooth.BluetoothProfile;
 import android.content.Context;
+import android.util.Log;
 
+import androidx.annotation.NonNull;
+import androidx.lifecycle.DefaultLifecycleObserver;
+import androidx.lifecycle.LifecycleOwner;
+
+import com.android.settings.bluetooth.Utils;
+import com.android.settings.connecteddevice.audiosharing.AudioSharingBasePreferenceController;
+import com.android.settings.connecteddevice.audiosharing.AudioSharingUtils;
 import com.android.settings.flags.Flags;
-import com.android.settings.widget.PreferenceCategoryController;
+import com.android.settingslib.bluetooth.BluetoothCallback;
+import com.android.settingslib.bluetooth.BluetoothUtils;
+import com.android.settingslib.bluetooth.CachedBluetoothDevice;
+import com.android.settingslib.bluetooth.LocalBluetoothManager;
+import com.android.settingslib.utils.ThreadUtils;
 
-public class AudioStreamsCategoryController extends PreferenceCategoryController {
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
+
+public class AudioStreamsCategoryController extends AudioSharingBasePreferenceController
+        implements DefaultLifecycleObserver {
+    private static final String TAG = "AudioStreamsCategoryController";
+    private static final boolean DEBUG = BluetoothUtils.D;
+    private final LocalBluetoothManager mLocalBtManager;
+    private final Executor mExecutor;
+    private final BluetoothCallback mBluetoothCallback =
+            new BluetoothCallback() {
+                @Override
+                public void onActiveDeviceChanged(
+                        @Nullable CachedBluetoothDevice activeDevice, int bluetoothProfile) {
+                    if (bluetoothProfile == BluetoothProfile.LE_AUDIO) {
+                        updateVisibility(isBroadcasting());
+                    }
+                }
+            };
 
     public AudioStreamsCategoryController(Context context, String key) {
         super(context, key);
+        mLocalBtManager = Utils.getLocalBtManager(mContext);
+        mExecutor = Executors.newSingleThreadExecutor();
+    }
+
+    @Override
+    public void onStart(@NonNull LifecycleOwner owner) {
+        if (mLocalBtManager != null) {
+            mLocalBtManager.getEventManager().registerCallback(mBluetoothCallback);
+        }
+        updateVisibility(isBroadcasting());
+    }
+
+    @Override
+    public void onStop(@NonNull LifecycleOwner owner) {
+        if (mLocalBtManager != null) {
+            mLocalBtManager.getEventManager().unregisterCallback(mBluetoothCallback);
+        }
     }
 
     @Override
@@ -33,4 +82,23 @@ public class AudioStreamsCategoryController extends PreferenceCategoryController
                 ? AVAILABLE
                 : UNSUPPORTED_ON_DEVICE;
     }
+
+    @Override
+    public void updateVisibility(boolean isBroadcasting) {
+        mExecutor.execute(
+                () -> {
+                    boolean hasActiveLe =
+                            AudioSharingUtils.getActiveSinkOnAssistant(mLocalBtManager).isPresent();
+                    if (DEBUG) {
+                        Log.d(
+                                TAG,
+                                "updateVisibility() isBroadcasting : "
+                                        + isBroadcasting
+                                        + " hasActiveLe : "
+                                        + hasActiveLe);
+                    }
+                    ThreadUtils.postOnMainThread(
+                            () -> super.updateVisibility(hasActiveLe && !isBroadcasting));
+                });
+    }
 }