| /* |
| * 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); |
| } |
| } |
| } |
| } |