| /* |
| * 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.applications.assist; |
| |
| import android.content.ContentResolver; |
| import android.database.ContentObserver; |
| import android.net.Uri; |
| import android.provider.Settings; |
| |
| import androidx.annotation.MainThread; |
| |
| import com.android.settingslib.utils.ThreadUtils; |
| |
| import java.util.List; |
| |
| public abstract class AssistSettingObserver extends ContentObserver { |
| |
| private final Uri ASSIST_URI = |
| Settings.Secure.getUriFor(Settings.Secure.ASSISTANT); |
| |
| public AssistSettingObserver() { |
| super(null /* handler */); |
| } |
| |
| public void register(ContentResolver cr, boolean register) { |
| if (register) { |
| cr.registerContentObserver(ASSIST_URI, false, this); |
| final List<Uri> settingUri = getSettingUris(); |
| if (settingUri != null) { |
| for (Uri uri : settingUri) { |
| cr.registerContentObserver(uri, false, this); |
| } |
| } |
| } else { |
| cr.unregisterContentObserver(this); |
| } |
| } |
| |
| @Override |
| public void onChange(boolean selfChange, Uri uri) { |
| super.onChange(selfChange, uri); |
| boolean shouldUpdatePreference = false; |
| final List<Uri> settingUri = getSettingUris(); |
| if (ASSIST_URI.equals(uri) || (settingUri != null && settingUri.contains(uri))) { |
| shouldUpdatePreference = true; |
| } |
| if (shouldUpdatePreference) { |
| ThreadUtils.postOnMainThread(() -> { |
| onSettingChange(); |
| }); |
| |
| } |
| } |
| |
| protected abstract List<Uri> getSettingUris(); |
| |
| @MainThread |
| public abstract void onSettingChange(); |
| } |