Showing recents in search

A list of recent queries will display when search first launches, or
when text query is empty.

Fix: 32452066
Test: make RunSettingsRoboTests
Change-Id: Ic697f8c0795f2315a01406537c7ce1bbf9a813be

src/com/android/settings/search2/SavedQueryViewHolder.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2017 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.search2;
+
+import android.view.View;
+import android.widget.TextView;
+
+public class SavedQueryViewHolder extends SearchViewHolder {
+
+    public final TextView titleView;
+
+    public SavedQueryViewHolder(View view) {
+        super(view);
+        titleView = (TextView) view.findViewById(android.R.id.title);
+    }
+
+    @Override
+    public void onBind(SearchFragment fragment, SearchResult result) {
+        titleView.setText(result.title);
+        itemView.setOnClickListener(v -> {
+            fragment.onSavedQueryClicked(result.title);
+        });
+    }
+}