Added new toggle for Content Capture on Settings -> Privacy

Test: manual verification
Test: atest EnableContentCapturePreferenceControllerTest

Bug: 119264902

Change-Id: I2e29d7892892e6a0f90a97e35c48df231d67b0b6

res/values/strings.xml

@@ -10716,4 +10716,12 @@
 
     <!-- Message for forget passpoint dialog [CHAR LIMIT=none] -->
     <string name="forget_passpoint_dialog_message">Your subscription with this provider may be cancelled. Recurring subscriptions will not be cancelled. For more information, check with your provider.</string>
+
+    <!-- Keywords for Content Capture feature [CHAR_LIMIT=32] -->
+    <string name="keywords_content_capture">content capture</string>
+    <!-- Title of the 'Content Capture' feature toggle in the Settings -> Privacy screen [CHAR LIMIT=none]-->
+    <string name="content_capture">Content Capture</string>
+    <!-- Description of the 'Content Capture' feature toggle in the Settings -> Privacy screen [CHAR LIMIT=NONE]-->
+    <string name="content_capture_summary">Allow Android to save information seen on your screen or heard in video or audio content. Android makes helpful suggestions based on your device activity.</string>
+
 </resources>

res/xml/privacy_dashboard_settings.xml

@@ -62,6 +62,13 @@
         android:summary="@string/summary_placeholder"
         settings:searchable="false"/>
 
+    <!-- Content Capture -->
+    <SwitchPreference
+        android:key="content_capture"
+        android:title="@string/content_capture"
+        android:summary="@string/content_capture_summary"
+        settings:controller="com.android.settings.privacy.EnableContentCapturePreferenceController"/>
+
     <!-- Privacy Service -->
     <PreferenceCategory
         android:key="privacy_services"/>

src/com/android/settings/privacy/EnableContentCapturePreferenceController.java

@@ -0,0 +1,58 @@
+/*
+ * 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.privacy;
+
+import android.content.Context;
+import android.os.IBinder;
+import android.os.ServiceManager;
+import android.os.UserHandle;
+import android.provider.Settings;
+import android.view.contentcapture.ContentCaptureManager;
+
+import com.android.settings.core.TogglePreferenceController;
+
+public class EnableContentCapturePreferenceController extends TogglePreferenceController {
+
+    private static final String KEY_SHOW_PASSWORD = "content_capture";
+    private static final int MY_USER_ID = UserHandle.myUserId();
+
+    public EnableContentCapturePreferenceController(Context context) {
+        super(context, KEY_SHOW_PASSWORD);
+    }
+
+    @Override
+    public boolean isChecked() {
+        boolean enabled = Settings.Secure.getIntForUser(mContext.getContentResolver(),
+                Settings.Secure.CONTENT_CAPTURE_ENABLED, 1, MY_USER_ID) == 1;
+        return enabled;
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        Settings.Secure.putIntForUser(mContext.getContentResolver(),
+                Settings.Secure.CONTENT_CAPTURE_ENABLED, isChecked ? 1 : 0, MY_USER_ID);
+        return true;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        // We cannot look for ContentCaptureManager, because it's not available if the service
+        // didn't whitelist Settings
+        IBinder service = ServiceManager.checkService(Context.CONTENT_CAPTURE_MANAGER_SERVICE);
+        return service != null ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+}

tests/robotests/src/com/android/settings/privacy/EnableContentCapturePreferenceControllerTest.java

@@ -0,0 +1,103 @@
+/*
+ * 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.privacy;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.provider.Settings;
+import android.provider.Settings.SettingNotFoundException;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
+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;
+
+@RunWith(RobolectricTestRunner.class)
+public class EnableContentCapturePreferenceControllerTest {
+
+    @Mock
+    private PreferenceScreen mScreen;
+
+    private Context mContext;
+    private EnableContentCapturePreferenceController mController;
+    private Preference mPreference;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mController = new EnableContentCapturePreferenceController(mContext);
+        mPreference = new Preference(mContext);
+        mPreference.setKey(mController.getPreferenceKey());
+    }
+
+    @Test
+    public void isChecked_settingIsOff_false() throws Exception {
+        setProperty(0);
+
+        assertThat(mController.isChecked()).isFalse();
+    }
+
+    @Test
+    public void isChecked_settingIsOn_true() throws Exception {
+        setProperty(1);
+
+        assertThat(mController.isChecked()).isTrue();
+    }
+
+    @Test
+    public void changePref_turnOn_shouldChangeSettingTo1() throws Exception {
+        setProperty(0);
+
+        mController.onPreferenceChange(mPreference, true);
+
+        assertThat(mController.isChecked()).isTrue();
+        assertProperty(1);
+    }
+
+    @Test
+    public void changePref_turnOff_shouldChangeSettingTo0() throws Exception {
+        setProperty(1);
+
+        mController.onPreferenceChange(mPreference, false);
+
+        assertThat(mController.isChecked()).isFalse();
+        assertProperty(0);
+    }
+
+    private void setProperty(int newValue) throws SettingNotFoundException {
+        final ContentResolver contentResolver = mContext.getContentResolver();
+        Settings.Secure.putInt(contentResolver, Settings.Secure.CONTENT_CAPTURE_ENABLED, newValue);
+    }
+
+    private void assertProperty(int expectedValue) throws SettingNotFoundException {
+        final ContentResolver contentResolver = mContext.getContentResolver();
+        assertThat(Settings.Secure.getInt(contentResolver, Settings.Secure.CONTENT_CAPTURE_ENABLED))
+                .isEqualTo(expectedValue);
+    }
+}