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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.settings.wifi;
import android.content.ContentResolver;
import android.content.Context;
import android.database.ContentObserver;
import android.net.Uri;
import android.os.Handler;
import android.provider.Settings;
import android.support.v14.preference.SwitchPreference;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceScreen;
import android.text.TextUtils;
import com.android.settings.core.PreferenceController;
import com.android.settingslib.core.lifecycle.Lifecycle;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnPause;
import com.android.settingslib.core.lifecycle.events.OnResume;
/**
* {@link PreferenceController} that controls whether we should notify user when open network is
* available.
*/
public class NotifyOpenNetworksPreferenceController extends PreferenceController implements
LifecycleObserver, OnResume, OnPause {
private static final String KEY_NOTIFY_OPEN_NETWORKS = "notify_open_networks";
private SettingObserver mSettingObserver;
public NotifyOpenNetworksPreferenceController(Context context, Lifecycle lifecycle) {
super(context);
lifecycle.addObserver(this);
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
mSettingObserver = new SettingObserver(screen.findPreference(KEY_NOTIFY_OPEN_NETWORKS));
}
@Override
public void onResume() {
if (mSettingObserver != null) {
mSettingObserver.register(mContext.getContentResolver(), true /* register */);
}
}
@Override
public void onPause() {
if (mSettingObserver != null) {
mSettingObserver.register(mContext.getContentResolver(), false /* register */);
}
}
@Override
public boolean isAvailable() {
return true;
}
@Override
public boolean handlePreferenceTreeClick(Preference preference) {
if (!TextUtils.equals(preference.getKey(), KEY_NOTIFY_OPEN_NETWORKS)) {
return false;
}
if (!(preference instanceof SwitchPreference)) {
return false;
}
Settings.Global.putInt(mContext.getContentResolver(),
Settings.Global.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON,
((SwitchPreference) preference).isChecked() ? 1 : 0);
return true;
}
@Override
public String getPreferenceKey() {
return KEY_NOTIFY_OPEN_NETWORKS;
}
@Override
public void updateState(Preference preference) {
if (!(preference instanceof SwitchPreference)) {
return;
}
final SwitchPreference notifyOpenNetworks = (SwitchPreference) preference;
notifyOpenNetworks.setChecked(Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON, 0) == 1);
}
class SettingObserver extends ContentObserver {
private final Uri NETWORKS_AVAILABLE_URI = Settings.Global.getUriFor(
Settings.Global.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON);
private final Preference mPreference;
public SettingObserver(Preference preference) {
super(new Handler());
mPreference = preference;
}
public void register(ContentResolver cr, boolean register) {
if (register) {
cr.registerContentObserver(NETWORKS_AVAILABLE_URI, false, this);
} else {
cr.unregisterContentObserver(this);
}
}
@Override
public void onChange(boolean selfChange, Uri uri) {
super.onChange(selfChange, uri);
if (NETWORKS_AVAILABLE_URI.equals(uri)) {
updateState(mPreference);
}
}
}
}
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