Migrate ChooseAccountActivity to DashboardFragment

- Build a controller to generate/manage a list of preferences.
- Move some logics to the controller and add tests.
- Rename to ChooseAccountFragment.

Bug: 73899467
Test: make RunSettingsRoboTests -j
      atest UniquePreferenceTest SettingsGatewayTest
Change-Id: Id2906c4b922ef159d08c803b976671264c54665f

src/com/android/settings/accounts/ChooseAccountFragment.java

@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2018 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.accounts;
+
+import android.content.Context;
+import android.os.UserHandle;
+import android.os.UserManager;
+import android.provider.SearchIndexableResource;
+
+import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
+import com.android.settings.R;
+import com.android.settings.Utils;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.search.BaseSearchIndexProvider;
+import com.android.settings.search.Indexable;
+import com.android.settingslib.core.AbstractPreferenceController;
+import com.android.settingslib.search.SearchIndexable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Activity asking a user to select an account to be set up.
+ */
+@SearchIndexable
+public class ChooseAccountFragment extends DashboardFragment {
+
+    private static final String TAG = "ChooseAccountFragment";
+
+    @Override
+    public int getMetricsCategory() {
+        return MetricsEvent.ACCOUNTS_CHOOSE_ACCOUNT_ACTIVITY;
+    }
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+
+        final String[] authorities = getIntent().getStringArrayExtra(
+                AccountPreferenceBase.AUTHORITIES_FILTER_KEY);
+        final String[] accountTypesFilter = getIntent().getStringArrayExtra(
+                AccountPreferenceBase.ACCOUNT_TYPES_FILTER_KEY);
+        final UserManager userManager = UserManager.get(getContext());
+        final UserHandle userHandle = Utils.getSecureTargetUser(getActivity().getActivityToken(),
+                userManager, null /* arguments */, getIntent().getExtras());
+
+        use(ChooseAccountPreferenceController.class).initialize(authorities, accountTypesFilter,
+                userHandle, getActivity());
+        use(EnterpriseDisclosurePreferenceController.class).setFooterPreferenceMixin(
+                mFooterPreferenceMixin);
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.add_account_settings;
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    protected List<AbstractPreferenceController> createPreferenceControllers(Context context) {
+        return buildControllers(context);
+    }
+
+    private static List<AbstractPreferenceController> buildControllers(Context context) {
+        final List<AbstractPreferenceController> controllers = new ArrayList<>();
+        controllers.add(new EnterpriseDisclosurePreferenceController(context));
+        return controllers;
+    }
+
+    public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
+            new BaseSearchIndexProvider() {
+                @Override
+                public List<SearchIndexableResource> getXmlResourcesToIndex(Context context,
+                        boolean enabled) {
+                    final ArrayList<SearchIndexableResource> result = new ArrayList<>();
+
+                    final SearchIndexableResource sir = new SearchIndexableResource(context);
+                    sir.xmlResId = R.xml.add_account_settings;
+                    result.add(sir);
+                    return result;
+                }
+
+                @Override
+                public List<AbstractPreferenceController> createPreferenceControllers(
+                        Context context) {
+                    return buildControllers(context);
+                }
+            };
+}