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/*
* 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.launcher3.util;
import android.content.ContentResolver;
import android.database.ContentObserver;
import android.os.Handler;
import android.provider.Settings;
public interface SettingsObserver {
/**
* Registers the content observer to call {@link #onSettingChanged(boolean)} when any of the
* passed settings change. The value passed to onSettingChanged() is based on the key setting.
*/
void register(String keySetting, String ... dependentSettings);
void unregister();
void onSettingChanged(boolean keySettingEnabled);
abstract class Secure extends ContentObserver implements SettingsObserver {
private ContentResolver mResolver;
private String mKeySetting;
public Secure(ContentResolver resolver) {
super(new Handler());
mResolver = resolver;
}
@Override
public void register(String keySetting, String ... dependentSettings) {
mKeySetting = keySetting;
mResolver.registerContentObserver(
Settings.Secure.getUriFor(mKeySetting), false, this);
for (String setting : dependentSettings) {
mResolver.registerContentObserver(
Settings.Secure.getUriFor(setting), false, this);
}
onChange(true);
}
@Override
public void unregister() {
mResolver.unregisterContentObserver(this);
}
@Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
onSettingChanged(Settings.Secure.getInt(mResolver, mKeySetting, 1) == 1);
}
}
abstract class System extends ContentObserver implements SettingsObserver {
private ContentResolver mResolver;
private String mKeySetting;
public System(ContentResolver resolver) {
super(new Handler());
mResolver = resolver;
}
@Override
public void register(String keySetting, String ... dependentSettings) {
mKeySetting = keySetting;
mResolver.registerContentObserver(
Settings.System.getUriFor(mKeySetting), false, this);
for (String setting : dependentSettings) {
mResolver.registerContentObserver(
Settings.System.getUriFor(setting), false, this);
}
onChange(true);
}
@Override
public void unregister() {
mResolver.unregisterContentObserver(this);
}
@Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
onSettingChanged(Settings.System.getInt(mResolver, mKeySetting, 1) == 1);
}
}
}
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