Added new toggle for Content Capture on Settings -> Privacy

Test: manual verification
Test: atest EnableContentCapturePreferenceControllerTest

Bug: 119264902

Change-Id: I2e29d7892892e6a0f90a97e35c48df231d67b0b6

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;
+    }
+}