public HaggleEventHandler(HaggleHandle hh, uint type, HaggleCallback callback)
{
if (type < 0 || type >= HaggleEvent.NUM_EVENTS)
{
throw new EventHandlerException("Bad event type");
}
this.callback = callback;
this.unmanagedCallback = new UnmanagedHaggleCallback(this.UnmanagedHandler);
ret = UnmanagedRegisterEventHandler(hh.handle, type, this.unmanagedCallback, IntPtr.Zero);
if (ret < 0)
{
throw new EventHandlerException("Could not register handler.", ret);
}
}
private bool connectToHaggle()
{
bool try_again = true;
while (try_again)
{
try_again = false;
if (HaggleHandle.DaemonPid() == 0)
{
if (!tryLaunchHaggle())
{
return false;
}
}
try
{
hh = new HaggleHandle("PhotoShare");
interestListHandler = new HaggleEventHandler(hh,
HaggleEvent.INTEREST_LIST, new HaggleCallback(this.onInterestList));
hh.RequestInterests();
updatedNeighborHandler = new HaggleEventHandler(hh,
HaggleEvent.NEIGHBOR_UPDATE, new HaggleCallback(this.onNeighborUpdate));
shutdownHandler = new HaggleEventHandler(hh,
HaggleEvent.SHUTDOWN, new HaggleCallback(this.onHaggleShutdown));
newDataObjectHandler = new HaggleEventHandler(hh,
HaggleEvent.NEW_DATAOBJECT, new HaggleCallback(this.onNewDataObject));
Utility.Vibration vib = new Utility.Vibration();
Debug.WriteLine("PhotoShare successfully connected to Haggle\n");
return true;
}
catch (Haggle.HaggleHandle.IPCException ex)
{
if (ex.GetError() == HaggleHandle.HAGGLE_BUSY_ERROR)
{
// FIXME: Should really check if there is another photoshare application running...
HaggleHandle.Unregister("PhotoShare");
Thread.Sleep(2000);
try_again = true;
}
else
{
Debug.WriteLine("Haggle Error: " + ex.ToString() + " errnum=" + ex.GetError());
uint pid = HaggleHandle.DaemonPid();
if (pid > 0)
{
MessageBox.Show("A Haggle PID file exists, but could still not connect to Haggle");
}
else if (pid == 0)
{
if (!tryLaunchHaggle())
{
HaggleHandle.Unregister("PhotoShare");
return false;
}
}
else
{
DialogResult res = MessageBox.Show("Could not connect to Haggle.",
"Haggle Error", MessageBoxButtons.OK, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1);
return false;
}
}
}
catch (Haggle.HaggleEventHandler.EventHandlerException ex)
{
MessageBox.Show(ex.ToString() + " Error=" + ex.GetError());
throw ex;
}
}
Application.Exit();
return false;
}
public HaggleEventHandler(HaggleHandle hh, uint type, HaggleCallback callback)
{
if (type < 0 || type >= HaggleEvent.NUM_EVENTS) {
throw new EventHandlerException("Bad event type");
}
this.callback = callback;
this.unmanagedCallback = new UnmanagedHaggleCallback(this.UnmanagedHandler);
ret = UnmanagedRegisterEventHandler(hh.handle, type, this.unmanagedCallback, IntPtr.Zero);
if (ret < 0)
{
throw new EventHandlerException("Could not register handler.", ret);
}
}