Add summary text for more top level setting tiles

- Connected devices
- App & notifs
- Battery

Bug: 110405144
Test: robotests
Change-Id: Ife44f7c5165483a1bad903ce90a241108ab5da25

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

@@ -0,0 +1,68 @@
+/*
+ * 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.icu.text.ListFormatter;
+import android.os.UserHandle;
+import android.text.BidiFormatter;
+import android.text.TextUtils;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settingslib.accounts.AuthenticatorHelper;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class TopLevelAccountEntryPreferenceController extends BasePreferenceController {
+    public TopLevelAccountEntryPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE_UNSEARCHABLE;
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        final AuthenticatorHelper authHelper = new AuthenticatorHelper(mContext,
+                UserHandle.of(UserHandle.myUserId()), null /* OnAccountsUpdateListener */);
+        final String[] types = authHelper.getEnabledAccountTypes();
+        final BidiFormatter bidiFormatter = BidiFormatter.getInstance();
+        final List<CharSequence> summaries = new ArrayList<>();
+
+        if (types == null || types.length == 0) {
+            summaries.add(mContext.getString(R.string.account_dashboard_default_summary));
+        } else {
+            // Show up to 3 account types, ignore any null value
+            int accountToAdd = Math.min(3, types.length);
+
+            for (int i = 0; i < types.length && accountToAdd > 0; i++) {
+                final CharSequence label = authHelper.getLabelForType(mContext, types[i]);
+                if (TextUtils.isEmpty(label)) {
+                    continue;
+                }
+
+                summaries.add(bidiFormatter.unicodeWrap(label));
+                accountToAdd--;
+            }
+        }
+        return ListFormatter.getInstance().format(summaries);
+    }
+}