Under "recent location requests", add "See all"

Under Settings -> Security & Location -> Location, add "See all" button
under recent location requests

On location settings page, display at most 3 recent location requests.
If there are more than 3, show a "see all" button.
When user clicks "See all", take them to a new fragment with all recent
location requests.

Test: Robo
Test: Manual
Bug: 70350519
Change-Id: Id1f9a8da1593814a8f30f8e6ec8ac75fb10f6672

src/com/android/settings/location/RecentLocationRequestSeeAllFragment.java

@@ -0,0 +1,89 @@
+/*
+ * Copyright 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.location;
+
+
+import android.content.Context;
+import android.provider.SearchIndexableResource;
+import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
+import com.android.settings.R;
+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.core.lifecycle.Lifecycle;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/** Dashboard Fragment to display all recent location requests, sorted by recency. */
+public class RecentLocationRequestSeeAllFragment extends DashboardFragment {
+
+    private static final String TAG = "RecentLocationReqAll";
+
+    public static final String PATH =
+            "com.android.settings.location.RecentLocationRequestSeeAllFragment";
+
+    @Override
+    public int getMetricsCategory() {
+      return MetricsEvent.RECENT_LOCATION_REQUESTS_ALL;
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.location_recent_requests_see_all;
+    }
+
+    @Override
+    protected String getLogTag() {
+      return TAG;
+    }
+
+    @Override
+    protected List<AbstractPreferenceController> createPreferenceControllers(Context context) {
+        return buildPreferenceControllers(context, getLifecycle(), this);
+    }
+
+    private static List<AbstractPreferenceController> buildPreferenceControllers(
+            Context context, Lifecycle lifecycle, RecentLocationRequestSeeAllFragment fragment) {
+        final List<AbstractPreferenceController> controllers = new ArrayList<>();
+        controllers.add(
+                new RecentLocationRequestSeeAllPreferenceController(context, lifecycle, fragment));
+        return controllers;
+    }
+
+    /**
+     * For Search.
+     */
+    public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
+            new BaseSearchIndexProvider() {
+                @Override
+                public List<SearchIndexableResource> getXmlResourcesToIndex(
+                        Context context, boolean enabled) {
+                    final SearchIndexableResource sir = new SearchIndexableResource(context);
+                    sir.xmlResId = R.xml.location_recent_requests_see_all;
+                    return Arrays.asList(sir);
+                }
+
+                @Override
+                public List<AbstractPreferenceController> getPreferenceControllers(Context
+                        context) {
+                    return buildPreferenceControllers(
+                            context, /* lifecycle = */ null, /* fragment = */ null);
+                }
+            };
+}