/// <summary>
/// Service method for AddEventHandler. Adds a method with a connect attribute as connect eventhandler.
/// </summary>
private void AddConnectHandlerWithAttribute(object handler, IEventFilter filter, MethodInfo method)
{
var methodParameters = method.GetParameters();
if (methodParameters.Length != 1 || methodParameters[0].ParameterType != typeof(IObjectConnection))
{
return;
}
var exp = Expression.GetActionType(typeof(IObjectConnection));
var delegat = method.CreateDelegate(exp, handler);
typeof(IObjectConnection)
.GetMethod("OnConnect")
.Invoke(this, new object[] { delegat, filter?.GenerateFunc(method) ?? null, handler });
}
private void AddDisconnectHandler(object commandHandler, IEventFilter filter, MethodInfo method)
{
var parameters = method.GetParameters();
if (parameters.Length == 1 && parameters[0].ParameterType == typeof(IObjectConnection))
{
var connectObj = new ConnectEventObject()
{
Action = method.CreateDelegate(typeof(Action <IObjectConnection>), commandHandler) as Action <IObjectConnection>,
CanExecute = filter?.GenerateFunc(method),
};
if (ConnectObject == null)
{
DisconnectObject = connectObj;
}
else
{
connectObj.Next = DisconnectObject;
DisconnectObject = connectObj;
}
}
}
private void AddCommandHandler(object commandHandler, IEventFilter filter, MethodInfo method, MethodInfo deserializerMethod)
{
var methodParameters = method.GetParameters();
if (methodParameters.Length != 2 || methodParameters[0].ParameterType != typeof(IObjectConnection))
{
return;
}
Type commandObjectType = methodParameters[1].ParameterType;
var methodAction = Expression.GetActionType(typeof(IObjectConnection), commandObjectType);
var deserializeMethInfo = deserializerMethod.MakeGenericMethod(commandObjectType);
var deserializeFunc = Expression.GetFuncType(typeof(byte[]), commandObjectType);
var commandObj = new CommandEventObject
{
CommandMethod = Delegate.CreateDelegate(methodAction, commandHandler, method),
DeserializerMethod = Delegate.CreateDelegate(deserializeFunc, serializer, deserializeMethInfo),
CanExecute = filter?.GenerateFunc(method),
};
CommandObjects[commandObjectType.FullName] = commandObj;
}