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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.networkrecommendation;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.os.Handler;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.annotation.VisibleForTesting;
import android.text.TextUtils;
import android.util.ArraySet;
import android.util.Log;
import java.util.Set;
import java.util.concurrent.TimeUnit;
/**
* Helper class for building and showing notifications for {@link WifiWakeupController}.
*/
public class WifiWakeupNotificationHelper {
private static final String TAG = "WifiWakeupNotifHelper";
private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
/** Unique ID used for the Wi-Fi Enabled notification. */
private static final int NOTIFICATION_ID = R.string.wifi_wakeup_enabled_notification_title;
@VisibleForTesting
static final String KEY_SHOWN_SSIDS = "key_shown_ssids";
private static final String ACTION_DISMISS_WIFI_ENABLED_NOTIFICATION =
"com.android.networkrecommendation.ACTION_DISMISS_WIFI_ENABLED_NOTIFICATION";
private static final IntentFilter INTENT_FILTER = new IntentFilter();
private static final long NETWORK_CONNECTED_TIMEOUT_MILLIS = TimeUnit.SECONDS.toMillis(30);
static {
INTENT_FILTER.addAction(ACTION_DISMISS_WIFI_ENABLED_NOTIFICATION);
INTENT_FILTER.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
}
private final Context mContext;
private final Resources mResources;
private final NotificationManager mNotificationManager;
private final Handler mHandler;
private final WifiManager mWifiManager;
private final SharedPreferences mSharedPreferences;
@VisibleForTesting
final Runnable mCancelNotification = new Runnable() {
@Override
public void run() {
cancelNotificationAndUnregisterReceiver();
}
};
@VisibleForTesting
final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (ACTION_DISMISS_WIFI_ENABLED_NOTIFICATION.equals(intent.getAction())) {
cancelNotificationAndUnregisterReceiver();
} else if (WifiManager.WIFI_STATE_CHANGED_ACTION.equals(intent.getAction())) {
networkStateChanged();
}
}
};
private boolean mNotificationShown;
private String mConnectedSsid;
public WifiWakeupNotificationHelper(Context context, Resources resources, Handler handler,
NotificationManager notificationManager, WifiManager wifiManager) {
this(context, resources, handler, notificationManager, wifiManager,
context.getSharedPreferences("wifi_wakeup", Context.MODE_PRIVATE));
}
@VisibleForTesting
WifiWakeupNotificationHelper(Context context, Resources resources, Handler handler,
NotificationManager notificationManager, WifiManager wifiManager,
SharedPreferences sharedPreferences) {
mContext = context;
mResources = resources;
mNotificationManager = notificationManager;
mHandler = handler;
mWifiManager = wifiManager;
mSharedPreferences = sharedPreferences;
mNotificationShown = false;
mConnectedSsid = null;
}
/**
* Show a notification that Wi-Fi has been enabled by Wi-Fi Wakeup.
*
* @param wifiConfiguration the {@link WifiConfiguration} that triggered Wi-Fi to wakeup
*/
public void maybeShowWifiEnabledNotification(@NonNull WifiConfiguration wifiConfiguration) {
Set<String> ssidSet = mSharedPreferences.getStringSet(KEY_SHOWN_SSIDS, null);
if (ssidSet == null) {
ssidSet = new ArraySet<>();
} else if (ssidSet.contains(wifiConfiguration.SSID)) {
if (DEBUG) {
Log.d(TAG, "Already showed Wi-Fi Enabled notification for ssid: "
+ wifiConfiguration.SSID);
}
return;
}
ssidSet.add(wifiConfiguration.SSID);
mSharedPreferences.edit().putStringSet(KEY_SHOWN_SSIDS, ssidSet).apply();
String title = mResources.getString(
R.string.wifi_wakeup_enabled_notification_title);
String summary = mResources.getString(
R.string.wifi_wakeup_enabled_notification_context, wifiConfiguration.SSID);
PendingIntent savedNetworkSettingsPendingIntent = PendingIntent.getActivity(mContext, 0,
new Intent(Settings.ACTION_CONFIGURE_WIFI_SETTINGS),
PendingIntent.FLAG_UPDATE_CURRENT);
PendingIntent deletePendingIntent = PendingIntent.getActivity(mContext, 0,
new Intent(ACTION_DISMISS_WIFI_ENABLED_NOTIFICATION),
PendingIntent.FLAG_UPDATE_CURRENT);
Bundle extras = new Bundle();
extras.putString(Notification.EXTRA_SUBSTITUTE_APP_NAME,
mResources.getString(R.string.android_system_label));
Notification notification = new Notification.Builder(mContext)
.setContentTitle(title)
.setSmallIcon(R.drawable.ic_wifi_signal_4)
.setStyle(new Notification.BigTextStyle().bigText(summary))
.setAutoCancel(true)
.setDeleteIntent(deletePendingIntent)
.setPriority(Notification.PRIORITY_LOW)
.setVisibility(Notification.VISIBILITY_PUBLIC)
.setCategory(Notification.CATEGORY_STATUS)
.setContentIntent(savedNetworkSettingsPendingIntent)
.addExtras(extras)
.build();
mNotificationManager.notify(TAG, NOTIFICATION_ID, notification);
mNotificationShown = true;
mContext.registerReceiver(mBroadcastReceiver, INTENT_FILTER, null /* broadcastPermission*/,
mHandler);
mHandler.postDelayed(mCancelNotification, NETWORK_CONNECTED_TIMEOUT_MILLIS);
}
private void cancelNotificationAndUnregisterReceiver() {
if (mNotificationShown) {
mNotificationShown = false;
mConnectedSsid = null;
mNotificationManager.cancel(TAG, NOTIFICATION_ID);
mContext.unregisterReceiver(mBroadcastReceiver);
}
}
private void networkStateChanged() {
if (!mWifiManager.isWifiEnabled()) {
cancelNotificationAndUnregisterReceiver();
return;
}
WifiInfo wifiInfo = mWifiManager.getConnectionInfo();
String ssid = wifiInfo == null ? null : wifiInfo.getSSID();
if (mConnectedSsid == null) {
mConnectedSsid = ssid;
mHandler.removeCallbacks(mCancelNotification);
} else {
if (!TextUtils.equals(ssid, mConnectedSsid)) {
cancelNotificationAndUnregisterReceiver();
}
}
}
}
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