public R ExecuteBusy <R>(IResultingBackgroundWorkerDelegate <R> busyDelegate)
{
IBusyToken token = AcquireBusyToken();
try
{
return(busyDelegate.Invoke());
}
finally
{
token.Finished();
}
}
public void ExecuteBusy(IBackgroundWorkerDelegate busyDelegate)
{
IBusyToken token = AcquireBusyToken();
try
{
busyDelegate.Invoke();
}
finally
{
token.Finished();
}
}
public void Finished(IBusyToken busyToken)
{
bool changed;
lock (pendingTokens)
{
if (!pendingTokens.Remove(busyToken))
{
throw new ArgumentException("Token not known");
}
changed = (pendingTokens.Count == 0);
}
GuiThreadHelper.InvokeInGui(delegate()
{
PropertyChanged(this, busyCountPCE);
// Busy flag might evaluate to false
if (changed)
{
PropertyChanged(this, isBusyPCE);
}
});
}
protected virtual void OnBeginBusy(IBusyToken token)
{
}
public BusyToken(IHasWeakReference vm, IBusyToken token)
: this(vm, token.Message)
{
token.Register(this);
}
public void OnCompleted(IBusyToken token)
{
Dispose();
}
