Add setting to bypass lock screen

Test: manual
Test: make RunSettingsRoboTests ROBOTEST_FILTER=LockscreenBypassPreferenceControllerTest
Bug: 130327302
Change-Id: I324c6e384480fa8576ba58d0bf73c1ef20484ee0

res/values/strings.xml

@@ -7976,6 +7976,15 @@
     <!-- Configure Notifications: Title for the option controlling notifications on the lockscreen. [CHAR LIMIT=30] -->
     <string name="lock_screen_notifications_title">Lock screen</string>
 
+    <!-- Configure lock screen: Title for the option of unlocking directly to home. [CHAR LIMIT=30] -->
+    <string name="lockscreen_bypass_title">Skip lock screen</string>
+
+    <!-- Configure lock screen: Summary for the option of unlocking directly to home. [CHAR LIMIT=60] -->
+    <string name="lockscreen_bypass_summary">After face unlock, go directly to last used screen</string>
+
+    <!-- Configure lock screen: Search keywords for the option of unlocking directly to home. [CHAR LIMIT=60] -->
+    <string name="keywords_lockscreen_bypass">Lock screen, Lockscreen, Skip, Bypass</string>
+
     <!-- Configure Notifications: Title for the option controlling notifications for work profile. [CHAR LIMIT=30] -->
     <string name="locked_work_profile_notification_title">When work profile is locked</string>
 

res/xml/privacy_dashboard_settings.xml

@@ -62,6 +62,14 @@
         android:summary="@string/summary_placeholder"
         settings:searchable="false"/>
 
+    <!-- Bypass lock screen -->
+    <SwitchPreference
+        android:key="privacy_lockscreen_bypass"
+        android:title="@string/lockscreen_bypass_title"
+        android:summary="@string/lockscreen_bypass_summary"
+        settings:keywords="@string/keywords_lockscreen_bypass"
+        settings:controller="com.android.settings.security.LockscreenBypassPreferenceController" />
+
     <!-- Privacy Service -->
     <PreferenceCategory
         android:key="privacy_services"

res/xml/security_lockscreen_settings.xml

@@ -30,6 +30,13 @@
             android:summary="@string/summary_placeholder"
             settings:keywords="@string/keywords_lock_screen_notif"/>
 
+        <SwitchPreference
+            android:key="security_lockscreen_bypass"
+            android:title="@string/lockscreen_bypass_title"
+            android:summary="@string/lockscreen_bypass_summary"
+            settings:searchable="false"
+            settings:controller="com.android.settings.security.LockscreenBypassPreferenceController" />
+
         <com.android.settingslib.RestrictedSwitchPreference
             android:key="security_lockscreen_add_users_when_locked"
             android:title="@string/user_add_on_lockscreen_menu"

src/com/android/settings/security/LockscreenBypassPreferenceController.java

@@ -0,0 +1,59 @@
+/*
+ * 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.security;
+
+import android.content.Context;
+import android.hardware.face.FaceManager;
+import android.provider.Settings;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.settings.core.TogglePreferenceController;
+
+public class LockscreenBypassPreferenceController extends TogglePreferenceController {
+
+    @VisibleForTesting
+    protected FaceManager mFaceManager;
+
+    public LockscreenBypassPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+        mFaceManager = context.getSystemService(FaceManager.class);
+    }
+
+    @Override
+    public boolean isChecked() {
+        boolean defaultValue = mContext.getResources().getBoolean(
+                com.android.internal.R.bool.config_faceAuthDismissesKeyguard);
+        return Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.FACE_UNLOCK_DISMISSES_KEYGUARD, defaultValue ? 1 : 0) != 0;
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        Settings.Secure.putInt(mContext.getContentResolver(),
+                Settings.Secure.FACE_UNLOCK_DISMISSES_KEYGUARD, isChecked ? 1 : 0);
+        return true;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        if (mFaceManager != null && mFaceManager.isHardwareDetected()) {
+            return mFaceManager.hasEnrolledTemplates() ? AVAILABLE : DISABLED_DEPENDENT_SETTING;
+        } else {
+            return UNSUPPORTED_ON_DEVICE;
+        }
+    }
+}

tests/robotests/src/com/android/settings/security/LockscreenBypassPreferenceControllerTest.java

@@ -0,0 +1,77 @@
+/*
+ * 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.security;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.hardware.face.FaceManager;
+import android.provider.Settings;
+
+import androidx.preference.SwitchPreference;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.util.ReflectionHelpers;
+
+@RunWith(RobolectricTestRunner.class)
+public class LockscreenBypassPreferenceControllerTest {
+
+    @Mock
+    private FaceManager mFaceManager;
+    private SwitchPreference mPreference;
+
+    private Context mContext;
+    private LockscreenBypassPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mPreference = new SwitchPreference(mContext);
+
+        mController = new LockscreenBypassPreferenceController(mContext, "TestKey");
+        ReflectionHelpers.setField(mController, "mFaceManager", mFaceManager);
+    }
+
+    @Test
+    public void isAvailable_whenHardwareDetected() {
+        assertThat(mController.isAvailable()).isFalse();
+        when(mFaceManager.isHardwareDetected()).thenReturn(true);
+        assertThat(mController.isAvailable()).isTrue();
+    }
+
+    @Test
+    public void onPreferenceChange_settingIsUpdated() {
+        boolean defaultValue = mContext.getResources().getBoolean(
+                com.android.internal.R.bool.config_faceAuthDismissesKeyguard);
+        boolean state = Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.FACE_UNLOCK_DISMISSES_KEYGUARD, defaultValue ? 1 : 0) != 0;
+
+        assertThat(mController.onPreferenceChange(mPreference, !state)).isTrue();
+        boolean newState = Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.FACE_UNLOCK_DISMISSES_KEYGUARD, 0) != 0;
+        assertThat(newState).isEqualTo(!state);
+    }
+}