Create NetworkScorerPicker preference controller to set preference summary.

Bug: 35854552
Test: make ROBOTEST_FILTER=NetworkScorerPickerPreferenceControllerTest
RunSettingsRoboTests -j40

Change-Id: I6dbd18abd67613ed0f85a52f1a3e13fdab0dca6c

src/com/android/settings/network/NetworkScoreManagerWrapper.java

@@ -56,6 +56,13 @@ public class NetworkScoreManagerWrapper {
         return mNetworkScoreManager.getActiveScorerPackage();
     }
 
+    /**
+     * Returns metadata about the active scorer or <code>null</code> if there is no active scorer.
+     */
+    @Nullable
+    public NetworkScorerAppData getActiveScorer() {
+        return mNetworkScoreManager.getActiveScorer();
+    }
 
     /**
      * Set the active scorer to a new package and clear existing scores.

src/com/android/settings/network/NetworkScorerPickerPreferenceController.java

@@ -0,0 +1,69 @@
+/*
+ * 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.network;
+
+import android.content.Context;
+import android.net.NetworkScorerAppData;
+import android.provider.Settings;
+import android.support.v7.preference.Preference;
+import com.android.settings.R;
+import com.android.settings.core.PreferenceController;
+
+/**
+ * {@link PreferenceController} that shows the active network scorer and toggles the preference
+ * based on {@link Settings.Global.NETWORK_RECOMMENDATIONS_ENABLED}.
+ */
+public class NetworkScorerPickerPreferenceController extends PreferenceController {
+
+    private static final String KEY_NETWORK_SCORER_PICKER = "network_scorer_picker";
+
+    private final NetworkScoreManagerWrapper mNetworkScoreManager;
+
+    public NetworkScorerPickerPreferenceController(Context context,
+            NetworkScoreManagerWrapper networkScoreManager) {
+        super(context);
+        mNetworkScoreManager = networkScoreManager;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_NETWORK_SCORER_PICKER;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        boolean enabled = Settings.Global.getInt(mContext.getContentResolver(),
+                Settings.Global.NETWORK_RECOMMENDATIONS_ENABLED, 0) == 1;
+        preference.setEnabled(enabled);
+        if (!enabled) {
+            preference.setSummary(null);
+            return;
+        }
+
+        NetworkScorerAppData scorer = mNetworkScoreManager.getActiveScorer();
+        if (scorer == null) {
+            preference.setSummary(mContext.getString(
+                    R.string.network_scorer_picker_none_preference));
+        } else {
+            preference.setSummary(scorer.getRecommendationServiceLabel());
+        }
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return true;
+    }
+}

src/com/android/settings/wifi/ConfigureWifiSettings.java

@@ -15,9 +15,11 @@
  */
 package com.android.settings.wifi;
 
+import static android.content.Context.NETWORK_SCORE_SERVICE;
 import static android.content.Context.WIFI_SERVICE;
 
 import android.content.Context;
+import android.net.NetworkScoreManager;
 import android.net.wifi.WifiManager;
 import android.provider.SearchIndexableResource;
 
@@ -25,6 +27,8 @@ import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
 import com.android.settings.core.PreferenceController;
 import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.network.NetworkScoreManagerWrapper;
+import com.android.settings.network.NetworkScorerPickerPreferenceController;
 import com.android.settings.network.WifiCallingPreferenceController;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.search.Indexable;
@@ -69,6 +73,9 @@ public class ConfigureWifiSettings extends DashboardFragment {
         controllers.add(new CellularFallbackPreferenceController(context));
         controllers.add(new NotifyOpenNetworksPreferenceController(context, getLifecycle()));
         controllers.add(new WifiWakeupPreferenceController(context, getLifecycle()));
+        controllers.add(new NetworkScorerPickerPreferenceController(context,
+                new NetworkScoreManagerWrapper(
+                        (NetworkScoreManager) getSystemService(NETWORK_SCORE_SERVICE))));
         controllers.add(new WifiSleepPolicyPreferenceController(context));
         controllers.add(new WifiP2pPreferenceController(context, getLifecycle(), mWifiManager));
         controllers.add(new WifiCallingPreferenceController(context));

tests/robotests/src/com/android/settings/network/NetworkScorerPickerPreferenceControllerTest.java

@@ -0,0 +1,103 @@
+/*
+ * 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.network;
+
+import static android.provider.Settings.Global.NETWORK_RECOMMENDATIONS_ENABLED;
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.net.NetworkScorerAppData;
+import android.provider.Settings;
+import android.support.v7.preference.Preference;
+import com.android.settings.R;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class NetworkScorerPickerPreferenceControllerTest {
+
+    private static final String TEST_SCORER_PACKAGE = "Test Package";
+    private static final String TEST_SCORER_CLASS = "Test Class";
+    private static final String TEST_SCORER_LABEL = "Test Label";
+
+    private Context mContext;
+    @Mock
+    private NetworkScoreManagerWrapper mNetworkScorer;
+    private NetworkScorerPickerPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mController = new NetworkScorerPickerPreferenceController(mContext, mNetworkScorer);
+    }
+
+    @Test
+    public void testIsAvailable_shouldAlwaysReturnTrue() {
+        assertThat(mController.isAvailable()).isTrue();
+    }
+
+    @Test
+    public void updateState_preferenceSetSummaryAsActiveScorerLabel() {
+        Settings.System.putInt(mContext.getContentResolver(), NETWORK_RECOMMENDATIONS_ENABLED, 1);
+        ComponentName scorer = new ComponentName(TEST_SCORER_PACKAGE, TEST_SCORER_CLASS);
+        NetworkScorerAppData scorerAppData = new NetworkScorerAppData(
+                0, scorer, TEST_SCORER_LABEL, null /* enableUseOpenWifiActivity */);
+        when(mNetworkScorer.getActiveScorer()).thenReturn(scorerAppData);
+        Preference preference = mock(Preference.class);
+
+        mController.updateState(preference);
+
+        verify(preference).setSummary(TEST_SCORER_LABEL);
+    }
+
+    @Test
+    public void updateState_noActiveScorer_preferenceSetSummaryToNone() {
+        Settings.System.putInt(mContext.getContentResolver(), NETWORK_RECOMMENDATIONS_ENABLED, 1);
+        when(mNetworkScorer.getActiveScorer()).thenReturn(null);
+        Preference preference = mock(Preference.class);
+
+        mController.updateState(preference);
+
+        verify(preference).setSummary(mContext.getString(
+                R.string.network_scorer_picker_none_preference));
+    }
+
+    @Test
+    public void updateState_networkRecommendationsDisabled_preferenceDisabled() {
+        Settings.System.putInt(mContext.getContentResolver(), NETWORK_RECOMMENDATIONS_ENABLED, 0);
+        when(mNetworkScorer.getActiveScorer()).thenReturn(null);
+        Preference preference = mock(Preference.class);
+
+        mController.updateState(preference);
+
+        verify(preference).setEnabled(false);
+        verify(preference).setSummary(null);
+    }
+}