gecko/mobile/android/base/GeckoConnectivityReceiver.java
2012-07-17 17:54:54 -07:00

74 lines
2.5 KiB
Java

/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko;
import android.app.Activity;
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.util.Log;
public class GeckoConnectivityReceiver extends BroadcastReceiver {
/*
* Keep the below constants in sync with
* http://mxr.mozilla.org/mozilla-central/source/netwerk/base/public/nsINetworkLinkService.idl
*/
private static final String LINK_DATA_UP = "up";
private static final String LINK_DATA_DOWN = "down";
private static final String LINK_DATA_UNKNOWN = "unknown";
private static final String LOGTAG = "GeckoConnectivityReceiver";
private IntentFilter mFilter;
private static boolean isRegistered = false;
public GeckoConnectivityReceiver() {
mFilter = new IntentFilter();
mFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
}
@Override
public void onReceive(Context context, Intent intent) {
String status;
ConnectivityManager cm = (ConnectivityManager)
context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo info = cm.getActiveNetworkInfo();
if (info == null)
status = LINK_DATA_UNKNOWN;
else if (!info.isConnected())
status = LINK_DATA_DOWN;
else
status = LINK_DATA_UP;
if (GeckoApp.checkLaunchState(GeckoApp.LaunchState.GeckoRunning))
GeckoAppShell.onChangeNetworkLinkStatus(status);
}
public void registerFor(Activity activity) {
if (!isRegistered) {
// registerReciever will return null if registering fails
isRegistered = activity.registerReceiver(this, mFilter) != null;
if (!isRegistered)
Log.e(LOGTAG, "Registering receiver failed");
}
}
public void unregisterFor(Activity activity) {
if (isRegistered) {
try {
activity.unregisterReceiver(this);
} catch (IllegalArgumentException iae) {
Log.e(LOGTAG, "Unregistering receiver failed", iae);
}
isRegistered = false;
}
}
}