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/**
*
*/
package org.connectbot.service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.NetworkInfo.State;
import android.net.wifi.WifiManager;
import android.net.wifi.WifiManager.WifiLock;
import android.util.Log;
/**
* @author kroot
*
*/
public class ConnectivityReceiver extends BroadcastReceiver {
private static final String TAG = "CB.ConnectivityManager";
private boolean mIsConnected = false;
final private TerminalManager mTerminalManager;
final private WifiLock mWifiLock;
private int mNetworkRef = 0;
private boolean mLockingWifi;
private Object[] mLock = new Object[0];
public ConnectivityReceiver(TerminalManager manager, boolean lockingWifi) {
mTerminalManager = manager;
final ConnectivityManager cm =
(ConnectivityManager) manager.getSystemService(Context.CONNECTIVITY_SERVICE);
final WifiManager wm = (WifiManager) manager.getSystemService(Context.WIFI_SERVICE);
mWifiLock = wm.createWifiLock(TAG);
final NetworkInfo info = cm.getActiveNetworkInfo();
if (info != null) {
mIsConnected = (info.getState() == State.CONNECTED);
}
mLockingWifi = lockingWifi;
final IntentFilter filter = new IntentFilter();
filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
manager.registerReceiver(this, filter);
}
/* (non-Javadoc)
* @see android.content.BroadcastReceiver#onReceive(android.content.Context, android.content.Intent)
*/
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (!action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
Log.w(TAG, "onReceived() called: " + intent);
return;
}
boolean noConnectivity = intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, false);
boolean isFailover = intent.getBooleanExtra(ConnectivityManager.EXTRA_IS_FAILOVER, false);
Log.d(TAG, "onReceived() called; noConnectivity? " + noConnectivity + "; isFailover? " + isFailover);
if (noConnectivity && !isFailover && mIsConnected) {
mIsConnected = false;
mTerminalManager.onConnectivityLost();
} else if (!mIsConnected) {
NetworkInfo info = (NetworkInfo) intent.getExtras()
.get(ConnectivityManager.EXTRA_NETWORK_INFO);
if (mIsConnected = (info.getState() == State.CONNECTED)) {
mTerminalManager.onConnectivityRestored();
}
}
}
/**
*
*/
public void cleanup() {
if (mWifiLock.isHeld())
mWifiLock.release();
mTerminalManager.unregisterReceiver(this);
}
/**
* Increase the number of things using the network. Acquire a Wi-Fi lock
* if necessary.
*/
public void incRef() {
synchronized (mLock) {
mNetworkRef += 1;
acquireWifiLockIfNecessaryLocked();
}
}
/**
* Decrease the number of things using the network. Release the Wi-Fi lock
* if necessary.
*/
public void decRef() {
synchronized (mLock) {
mNetworkRef -= 1;
releaseWifiLockIfNecessaryLocked();
}
}
/**
* @param mLockingWifi
*/
public void setWantWifiLock(boolean lockingWifi) {
synchronized (mLock) {
mLockingWifi = lockingWifi;
if (mLockingWifi) {
acquireWifiLockIfNecessaryLocked();
} else {
releaseWifiLockIfNecessaryLocked();
}
}
}
private void acquireWifiLockIfNecessaryLocked() {
if (mLockingWifi && mNetworkRef > 0 && !mWifiLock.isHeld()) {
mWifiLock.acquire();
}
}
private void releaseWifiLockIfNecessaryLocked() {
if (mNetworkRef == 0 && mWifiLock.isHeld()) {
mWifiLock.release();
}
}
/**
* @return whether we're connected to a network
*/
public boolean isConnected() {
return mIsConnected;
}
}
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