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/*
* Copyright (C) 2015 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.systemui.statusbar.policy;
import android.content.Context;
import android.content.Intent;
import android.net.NetworkCapabilities;
import android.net.NetworkInfo;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.Handler;
import android.os.Message;
import android.os.Messenger;
import android.util.Log;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.util.AsyncChannel;
import com.android.systemui.statusbar.policy.NetworkController.IconState;
import java.util.List;
import java.util.Objects;
public class WifiSignalController extends
SignalController<WifiSignalController.WifiState, SignalController.IconGroup> {
private final WifiManager mWifiManager;
private final AsyncChannel mWifiChannel;
private final boolean mHasMobileData;
public WifiSignalController(Context context, boolean hasMobileData,
CallbackHandler callbackHandler, NetworkControllerImpl networkController) {
super("WifiSignalController", context, NetworkCapabilities.TRANSPORT_WIFI,
callbackHandler, networkController);
mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
mHasMobileData = hasMobileData;
Handler handler = new WifiHandler();
mWifiChannel = new AsyncChannel();
Messenger wifiMessenger = mWifiManager.getWifiServiceMessenger();
if (wifiMessenger != null) {
mWifiChannel.connect(context, handler, wifiMessenger);
}
// WiFi only has one state.
mCurrentState.iconGroup = mLastState.iconGroup = new IconGroup(
"Wi-Fi Icons",
WifiIcons.WIFI_SIGNAL_STRENGTH,
WifiIcons.QS_WIFI_SIGNAL_STRENGTH,
AccessibilityContentDescriptions.WIFI_CONNECTION_STRENGTH,
WifiIcons.WIFI_NO_NETWORK,
WifiIcons.QS_WIFI_NO_NETWORK,
WifiIcons.WIFI_NO_NETWORK,
WifiIcons.QS_WIFI_NO_NETWORK,
AccessibilityContentDescriptions.WIFI_NO_CONNECTION
);
}
@Override
protected WifiState cleanState() {
return new WifiState();
}
@Override
public void notifyListeners() {
// only show wifi in the cluster if connected or if wifi-only
boolean wifiVisible = mCurrentState.enabled
&& (mCurrentState.connected || !mHasMobileData);
String wifiDesc = wifiVisible ? mCurrentState.ssid : null;
boolean ssidPresent = wifiVisible && mCurrentState.ssid != null;
String contentDescription = getStringIfExists(getContentDescription());
IconState statusIcon = new IconState(wifiVisible, getCurrentIconId(), contentDescription);
IconState qsIcon = new IconState(mCurrentState.connected, getQsCurrentIconId(),
contentDescription);
mCallbackHandler.setWifiIndicators(mCurrentState.enabled, statusIcon, qsIcon,
ssidPresent && mCurrentState.activityIn, ssidPresent && mCurrentState.activityOut,
wifiDesc);
}
/**
* Extract wifi state directly from broadcasts about changes in wifi state.
*/
public void handleBroadcast(Intent intent) {
String action = intent.getAction();
if (action.equals(WifiManager.WIFI_STATE_CHANGED_ACTION)) {
mCurrentState.enabled = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE,
WifiManager.WIFI_STATE_UNKNOWN) == WifiManager.WIFI_STATE_ENABLED;
} else if (action.equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) {
final NetworkInfo networkInfo = (NetworkInfo)
intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
mCurrentState.connected = networkInfo != null && networkInfo.isConnected();
// If Connected grab the signal strength and ssid.
if (mCurrentState.connected) {
// try getting it out of the intent first
WifiInfo info = intent.getParcelableExtra(WifiManager.EXTRA_WIFI_INFO) != null
? (WifiInfo) intent.getParcelableExtra(WifiManager.EXTRA_WIFI_INFO)
: mWifiManager.getConnectionInfo();
if (info != null) {
mCurrentState.ssid = getSsid(info);
} else {
mCurrentState.ssid = null;
}
} else if (!mCurrentState.connected) {
mCurrentState.ssid = null;
}
} else if (action.equals(WifiManager.RSSI_CHANGED_ACTION)) {
// Default to -200 as its below WifiManager.MIN_RSSI.
mCurrentState.rssi = intent.getIntExtra(WifiManager.EXTRA_NEW_RSSI, -200);
mCurrentState.level = WifiManager.calculateSignalLevel(
mCurrentState.rssi, WifiIcons.WIFI_LEVEL_COUNT);
}
notifyListenersIfNecessary();
}
private String getSsid(WifiInfo info) {
String ssid = info.getSSID();
if (ssid != null) {
return ssid;
}
// OK, it's not in the connectionInfo; we have to go hunting for it
List<WifiConfiguration> networks = mWifiManager.getConfiguredNetworks();
int length = networks.size();
for (int i = 0; i < length; i++) {
if (networks.get(i).networkId == info.getNetworkId()) {
return networks.get(i).SSID;
}
}
return null;
}
@VisibleForTesting
void setActivity(int wifiActivity) {
mCurrentState.activityIn = wifiActivity == WifiManager.DATA_ACTIVITY_INOUT
|| wifiActivity == WifiManager.DATA_ACTIVITY_IN;
mCurrentState.activityOut = wifiActivity == WifiManager.DATA_ACTIVITY_INOUT
|| wifiActivity == WifiManager.DATA_ACTIVITY_OUT;
notifyListenersIfNecessary();
}
/**
* Handler to receive the data activity on wifi.
*/
private class WifiHandler extends Handler {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED:
if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) {
mWifiChannel.sendMessage(Message.obtain(this,
AsyncChannel.CMD_CHANNEL_FULL_CONNECTION));
} else {
Log.e(mTag, "Failed to connect to wifi");
}
break;
case WifiManager.DATA_ACTIVITY_NOTIFICATION:
setActivity(msg.arg1);
break;
default:
// Ignore
break;
}
}
}
static class WifiState extends SignalController.State {
String ssid;
@Override
public void copyFrom(State s) {
super.copyFrom(s);
WifiState state = (WifiState) s;
ssid = state.ssid;
}
@Override
protected void toString(StringBuilder builder) {
super.toString(builder);
builder.append(',').append("ssid=").append(ssid);
}
@Override
public boolean equals(Object o) {
return super.equals(o)
&& Objects.equals(((WifiState) o).ssid, ssid);
}
}
}
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