/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.wifi;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.database.ContentObserver;
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import android.net.Uri;
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import android.os.Handler;
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import android.provider.Settings;
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import android.text.TextUtils;
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import androidx.preference.Preference;
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import androidx.preference.PreferenceScreen;
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import androidx.preference.SwitchPreference;
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import com.android.settings.core.PreferenceControllerMixin;
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import com.android.settingslib.core.AbstractPreferenceController;
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import com.android.settingslib.core.lifecycle.Lifecycle;
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import com.android.settingslib.core.lifecycle.LifecycleObserver;
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import com.android.settingslib.core.lifecycle.events.OnPause;
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import com.android.settingslib.core.lifecycle.events.OnResume;
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/**
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* {@link AbstractPreferenceController} that controls whether we should notify user when open
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* network is available.
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*/
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public class NotifyOpenNetworksPreferenceController extends AbstractPreferenceController
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implements PreferenceControllerMixin, LifecycleObserver, OnResume, OnPause {
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private static final String KEY_NOTIFY_OPEN_NETWORKS = "notify_open_networks";
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private SettingObserver mSettingObserver;
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public NotifyOpenNetworksPreferenceController(Context context, Lifecycle lifecycle) {
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super(context);
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lifecycle.addObserver(this);
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}
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@Override
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public void displayPreference(PreferenceScreen screen) {
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super.displayPreference(screen);
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mSettingObserver = new SettingObserver(screen.findPreference(KEY_NOTIFY_OPEN_NETWORKS));
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}
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@Override
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public void onResume() {
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if (mSettingObserver != null) {
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mSettingObserver.register(mContext.getContentResolver(), true /* register */);
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}
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}
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@Override
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public void onPause() {
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if (mSettingObserver != null) {
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mSettingObserver.register(mContext.getContentResolver(), false /* register */);
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}
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}
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@Override
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public boolean isAvailable() {
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return true;
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}
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@Override
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public boolean handlePreferenceTreeClick(Preference preference) {
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if (!TextUtils.equals(preference.getKey(), KEY_NOTIFY_OPEN_NETWORKS)) {
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return false;
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}
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if (!(preference instanceof SwitchPreference)) {
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return false;
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}
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Settings.Global.putInt(mContext.getContentResolver(),
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Settings.Global.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON,
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((SwitchPreference) preference).isChecked() ? 1 : 0);
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return true;
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}
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@Override
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public String getPreferenceKey() {
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return KEY_NOTIFY_OPEN_NETWORKS;
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}
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@Override
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public void updateState(Preference preference) {
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if (!(preference instanceof SwitchPreference)) {
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return;
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}
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final SwitchPreference notifyOpenNetworks = (SwitchPreference) preference;
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notifyOpenNetworks.setChecked(Settings.Global.getInt(mContext.getContentResolver(),
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Settings.Global.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON, 0) == 1);
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}
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class SettingObserver extends ContentObserver {
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private final Uri NETWORKS_AVAILABLE_URI = Settings.Global.getUriFor(
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Settings.Global.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON);
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private final Preference mPreference;
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public SettingObserver(Preference preference) {
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super(new Handler());
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mPreference = preference;
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}
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public void register(ContentResolver cr, boolean register) {
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if (register) {
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cr.registerContentObserver(NETWORKS_AVAILABLE_URI, false, this);
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} else {
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cr.unregisterContentObserver(this);
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}
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}
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@Override
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public void onChange(boolean selfChange, Uri uri) {
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super.onChange(selfChange, uri);
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if (NETWORKS_AVAILABLE_URI.equals(uri)) {
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updateState(mPreference);
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}
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}
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}
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}
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