Add Fast Pair devices "See all" page.

Bug: 296507968
Test: FastPairDeviceGroupControllerTest
Change-Id: I3939f65ac9262673d99e7041df5b9dc04bd43722

src/com/android/settings/connecteddevice/fastpair/FastPairDeviceDashboardFragment.java

@@ -0,0 +1,55 @@
+/*
+ * 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.fastpair;
+
+import android.app.settings.SettingsEnums;
+
+import com.android.settings.R;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.search.BaseSearchIndexProvider;
+import com.android.settingslib.search.SearchIndexable;
+
+/** This fragment contains list of available FastPair device */
+@SearchIndexable(forTarget = SearchIndexable.MOBILE)
+public class FastPairDeviceDashboardFragment extends DashboardFragment {
+
+    private static final String TAG = "FastPairDeviceFrag";
+
+    @Override
+    public int getHelpResource() {
+        return R.string.help_url_connected_devices_fast_pair_devices;
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.fast_pair_devices;
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return SettingsEnums.FAST_PAIR_DEVICES;
+    }
+
+    /** For Search. */
+    public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
+            new BaseSearchIndexProvider(R.xml.fast_pair_devices);
+}

src/com/android/settings/connecteddevice/fastpair/FastPairDeviceGroupController.java

@@ -0,0 +1,143 @@
+/*
+ * 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.fastpair;
+
+import android.bluetooth.BluetoothAdapter;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.pm.PackageManager;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.VisibleForTesting;
+import androidx.lifecycle.DefaultLifecycleObserver;
+import androidx.lifecycle.LifecycleOwner;
+import androidx.preference.Preference;
+import androidx.preference.PreferenceGroup;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.connecteddevice.DevicePreferenceCallback;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settings.flags.Flags;
+import com.android.settings.overlay.FeatureFactory;
+
+/**
+ * Controller to maintain the {@link PreferenceGroup} for all Fast Pair devices. It uses {@link
+ * DevicePreferenceCallback} to add/remove {@link Preference}
+ */
+public class FastPairDeviceGroupController extends BasePreferenceController
+        implements PreferenceControllerMixin, DefaultLifecycleObserver, DevicePreferenceCallback {
+
+    private static final String KEY = "fast_pair_device_list";
+
+    @VisibleForTesting PreferenceGroup mPreferenceGroup;
+    private final FastPairDeviceUpdater mFastPairDeviceUpdater;
+    private final BluetoothAdapter mBluetoothAdapter;
+    @VisibleForTesting IntentFilter mIntentFilter;
+
+    @VisibleForTesting
+    BroadcastReceiver mReceiver =
+            new BroadcastReceiver() {
+                @Override
+                public void onReceive(Context context, Intent intent) {
+                    updatePreferenceVisibility();
+                }
+            };
+
+    public FastPairDeviceGroupController(Context context) {
+        super(context, KEY);
+        if (Flags.enableSubsequentPairSettingsIntegration()) {
+            FastPairFeatureProvider fastPairFeatureProvider =
+                    FeatureFactory.getFeatureFactory().getFastPairFeatureProvider();
+            mFastPairDeviceUpdater =
+                    fastPairFeatureProvider.getFastPairDeviceUpdater(context, this);
+        } else {
+            mFastPairDeviceUpdater = null;
+        }
+        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
+        mIntentFilter = new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED);
+    }
+
+    @Override
+    public void onStart(@NonNull LifecycleOwner owner) {
+        if (mFastPairDeviceUpdater != null) {
+            mFastPairDeviceUpdater.registerCallback();
+        }
+        mContext.registerReceiver(mReceiver, mIntentFilter, Context.RECEIVER_EXPORTED_UNAUDITED);
+    }
+
+    @Override
+    public void onStop(@NonNull LifecycleOwner owner) {
+        if (mFastPairDeviceUpdater != null) {
+            mFastPairDeviceUpdater.unregisterCallback();
+        }
+        mContext.unregisterReceiver(mReceiver);
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        mPreferenceGroup = screen.findPreference(KEY);
+        mPreferenceGroup.setVisible(false);
+
+        if (isAvailable()) {
+            final Context context = screen.getContext();
+            mFastPairDeviceUpdater.setPreferenceContext(context);
+            mFastPairDeviceUpdater.forceUpdate();
+        }
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return (mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH)
+                        && mFastPairDeviceUpdater != null)
+                ? AVAILABLE
+                : UNSUPPORTED_ON_DEVICE;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY;
+    }
+
+    @Override
+    public void onDeviceAdded(Preference preference) {
+        if (preference == null) return;
+        mPreferenceGroup.addPreference(preference);
+        updatePreferenceVisibility();
+    }
+
+    @Override
+    public void onDeviceRemoved(Preference preference) {
+        if (preference == null) return;
+        mPreferenceGroup.removePreference(preference);
+        updatePreferenceVisibility();
+    }
+
+    private void updatePreferenceVisibility() {
+        mPreferenceGroup.setVisible(
+                mBluetoothAdapter != null
+                        && mBluetoothAdapter.isEnabled()
+                        && mPreferenceGroup.getPreferenceCount() > 0);
+    }
+
+    @VisibleForTesting
+    public void setPreferenceGroup(PreferenceGroup preferenceGroup) {
+        mPreferenceGroup = preferenceGroup;
+    }
+}