New toggle for peoplehub in Notification settings

Fixes: 146150828
Test: manual, atest
Change-Id: I7c21b81b1337ca0daf5b846f6ba9c7e6a239f09f
diff --git a/res/values/strings.xml b/res/values/strings.xml
index d9020e8..a03dd53 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -7909,6 +7909,9 @@
     <!-- Configure Notifications: Title for the notification badging option. [CHAR LIMIT=30 BACKUP_MESSAGE_ID=5125022693565388760] -->
     <string name="notification_badging_title">Allow notification dots</string>
 
+    <!-- Configure Notifications: Title for the people notification strip option. [CHAR LIMIT=60] -->
+    <string name="notification_people_strip_title">Show strip of recent conversations</string>
+
     <!-- Configure Notifications: Title for the notification bubbles option. [CHAR LIMIT=60] -->
     <string name="notification_bubbles_title">Bubbles</string>
     <!-- Developer setting summary for bubbles [CHAR LIMIT=NONE] -->
diff --git a/res/xml/configure_notification_settings.xml b/res/xml/configure_notification_settings.xml
index fdfde67..7dea4e6 100644
--- a/res/xml/configure_notification_settings.xml
+++ b/res/xml/configure_notification_settings.xml
@@ -118,6 +118,11 @@
             android:summary="@string/summary_placeholder"
             android:ringtoneType="notification"/>
 
+        <SwitchPreference
+            android:key="notification_people_strip"
+            android:title="@string/notification_people_strip_title"
+            settings:controller="com.android.settings.notification.NotificationPeopleStripPreferenceController"/>
+
         <Preference
             android:key="gesture_swipe_down_fingerprint_notifications"
             android:title="@string/fingerprint_swipe_for_notifications_title"
diff --git a/src/com/android/settings/notification/NotificationPeopleStripPreferenceController.java b/src/com/android/settings/notification/NotificationPeopleStripPreferenceController.java
new file mode 100644
index 0000000..e16443e
--- /dev/null
+++ b/src/com/android/settings/notification/NotificationPeopleStripPreferenceController.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2019 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.notification;
+
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.ContentObserver;
+import android.net.Uri;
+import android.os.Handler;
+import android.os.Looper;
+import android.provider.Settings;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settings.core.TogglePreferenceController;
+import com.android.settingslib.core.lifecycle.LifecycleObserver;
+import com.android.settingslib.core.lifecycle.events.OnPause;
+import com.android.settingslib.core.lifecycle.events.OnResume;
+
+import com.google.common.annotations.VisibleForTesting;
+
+/** Controls toggle setting for people strip in system ui. */
+public class NotificationPeopleStripPreferenceController extends TogglePreferenceController
+        implements PreferenceControllerMixin, Preference.OnPreferenceChangeListener,
+        LifecycleObserver, OnResume, OnPause {
+
+    @VisibleForTesting
+    static final int ON = 1;
+    @VisibleForTesting
+    static final int OFF = 0;
+
+    private final Uri mPeopleStripUri =
+            Settings.Secure.getUriFor(Settings.Secure.PEOPLE_STRIP);
+
+    private Preference mPreference;
+    private Runnable mUnregisterOnPropertiesChangedListener;
+
+    public NotificationPeopleStripPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreference = screen.findPreference("notification_people_strip");
+    }
+
+    @Override
+    public void onResume() {
+        if (mPreference == null) {
+            return;
+        }
+        ContentObserver observer = new ContentObserver(new Handler(Looper.getMainLooper())) {
+            @Override
+            public void onChange(boolean selfChange) {
+                super.onChange(selfChange);
+                updateState(mPreference);
+            }
+        };
+        ContentResolver contentResolver = mContext.getContentResolver();
+        mUnregisterOnPropertiesChangedListener =
+                () -> contentResolver.unregisterContentObserver(observer);
+        contentResolver.registerContentObserver(mPeopleStripUri, false, observer);
+    }
+
+    @Override
+    public void onPause() {
+        if (mUnregisterOnPropertiesChangedListener != null) {
+            mUnregisterOnPropertiesChangedListener.run();
+            mUnregisterOnPropertiesChangedListener = null;
+        }
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+
+    @Override
+    public boolean isSliceable() {
+        return false;
+    }
+
+    @Override
+    public boolean isChecked() {
+        int value = Settings.Secure.getInt(
+                mContext.getContentResolver(),
+                Settings.Secure.PEOPLE_STRIP,
+                OFF);
+        return value != OFF;
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        return Settings.Secure.putInt(
+                mContext.getContentResolver(),
+                Settings.Secure.PEOPLE_STRIP,
+                isChecked ? ON : OFF);
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/notification/NotificationPeopleStripPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/notification/NotificationPeopleStripPreferenceControllerTest.java
new file mode 100644
index 0000000..786ffb3
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/notification/NotificationPeopleStripPreferenceControllerTest.java
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2019 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.notification;
+
+import static android.provider.Settings.Secure.PEOPLE_STRIP;
+
+import static com.android.settings.notification.NotificationPeopleStripPreferenceController.OFF;
+import static com.android.settings.notification.NotificationPeopleStripPreferenceController.ON;
+
+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.Context;
+import android.provider.Settings;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+import androidx.preference.TwoStatePreference;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Answers;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class NotificationPeopleStripPreferenceControllerTest {
+
+    private static final String KEY_PEOPLE_STRIP = "notification_people_strip";
+
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private Context mContext;
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private PreferenceScreen mScreen;
+
+    private NotificationPeopleStripPreferenceController mController;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mController = new NotificationPeopleStripPreferenceController(mContext, KEY_PEOPLE_STRIP);
+        Preference preference = new Preference(RuntimeEnvironment.application);
+        preference.setKey(mController.getPreferenceKey());
+        when(mScreen.findPreference(preference.getKey())).thenReturn(preference);
+    }
+
+    @Test
+    public void updateState_preferenceSetCheckedWhenSettingIsOn() {
+        final TwoStatePreference preference = mock(TwoStatePreference.class);
+        final Context context = RuntimeEnvironment.application;
+        Settings.Secure.putInt(context.getContentResolver(), PEOPLE_STRIP, ON);
+
+        mController = new NotificationPeopleStripPreferenceController(context, KEY_PEOPLE_STRIP);
+        mController.updateState(preference);
+
+        verify(preference).setChecked(true);
+    }
+
+    @Test
+    public void updateState_preferenceSetUncheckedWhenSettingIsOff() {
+        final TwoStatePreference preference = mock(TwoStatePreference.class);
+        final Context context = RuntimeEnvironment.application;
+        Settings.Secure.putInt(context.getContentResolver(), PEOPLE_STRIP, OFF);
+
+        mController = new NotificationPeopleStripPreferenceController(context, KEY_PEOPLE_STRIP);
+        mController.updateState(preference);
+
+        verify(preference).setChecked(false);
+    }
+
+    @Test
+    public void isChecked_settingIsOff_shouldReturnFalse() {
+        Settings.Secure.putInt(mContext.getContentResolver(), PEOPLE_STRIP, OFF);
+
+        assertThat(mController.isChecked()).isFalse();
+    }
+
+    @Test
+    public void isChecked_settingIsOn_shouldReturnTrue() {
+        Settings.Secure.putInt(mContext.getContentResolver(), PEOPLE_STRIP, ON);
+
+        assertThat(mController.isChecked()).isTrue();
+    }
+
+    @Test
+    public void setChecked_setFalse_disablesSetting() {
+        Settings.Secure.putInt(mContext.getContentResolver(), PEOPLE_STRIP, ON);
+
+        mController.setChecked(false);
+        int updatedValue = Settings.Secure.getInt(mContext.getContentResolver(), PEOPLE_STRIP, -1);
+
+        assertThat(updatedValue).isEqualTo(OFF);
+    }
+
+    @Test
+    public void setChecked_setTrue_enablesSetting() {
+        Settings.Secure.putInt(mContext.getContentResolver(), PEOPLE_STRIP, OFF);
+
+        mController.setChecked(true);
+        int updatedValue = Settings.Secure.getInt(mContext.getContentResolver(), PEOPLE_STRIP, -1);
+
+        assertThat(updatedValue).isEqualTo(ON);
+    }
+}