public void AutoWireEvents(ILogic logic)
{
var logicType = logic.GetType();
var methodsForAutoWire = TypeCacheUtils.NeedsAutoWire(logicType);
foreach (var methodEx in methodsForAutoWire)
{
var method = methodEx.method;
var attr = methodEx.HandlerAttribute;
ILogicWithViewModel <IViewModel> logicWithViewModel = logic as ILogicWithViewModel <IViewModel>;
string componentName;
string eventId;
//We have an attribute with no arguments like [Handler] void MethodName(...) { ... }
if (attr.IsDefault)
{
if (methodEx.MethodAndEventParts != null)
{
var methodNameParts = methodEx.MethodAndEventParts;
Debug.Assert(methodNameParts.Count() == 2);
componentName = methodNameParts[0];
eventId = methodNameParts[1];
}
else
{
componentName = null;
eventId = method.Name;
}
}
else
{
componentName = attr.GetControl();
eventId = attr.GetEvent();
}
TraceUtil.WriteLine(string.Format("AutoWire Event for {0} {1}", componentName, eventId));
//Is this event on a Form?
if (logicWithViewModel != null)
{
if (logicWithViewModel.ViewModel == null)
{
Debug.Assert(false, "A Form does not have its corresponding ViewModel");
}
else
{
if (componentName != null)
{
var componentProp = logicWithViewModel.ViewModel.GetType().Property(componentName);
if (componentProp != null)
{
var component = componentProp.GetValue(logicWithViewModel.ViewModel, null) as IStateObject;
var controlArray = component is IList;
if (component != null && !controlArray)
{
RegisterMethodForEvent(logicWithViewModel, method, componentName, eventId, component);
}
else if (component == null && componentProp.PropertyType.IsArray)
{
var array = logicWithViewModel.ViewModel.GetPropertyValue(componentName) as IList;
if (array != null)
{
foreach (IStateObject element in array)
{
RegisterMethodForEvent(logicWithViewModel, method, componentName, eventId, element);
}
}
}
}
}
}
}
else if (logic is IStateObject)
{
IStateObject stateObject = (IStateObject)logic;
//If this is not a form then it must something like an IModel or an IDependentViewModel
if (componentName != null)
{
var componentProp = logicType.Property(componentName);
if (componentProp != null)
{
var component = componentProp.GetValue(logic, null) as IStateObject;
if (component != null)
{
RegisterMethodForEvent(logic, method, componentName, eventId, component);
}
else
{
TraceUtil.TraceError("EventAggregator::AutoWriteEvents failed for method [" + method.Name + "] property not found for [" + componentName + "]");
continue;
}
}
}
else
{
RegisterMethodForEvent(logic, method, NONCOMPONENT_EVENT, eventId, stateObject);
}
}
else
{
throw new NotSupportedException("Events can only be register on object instances implementing ILogicView<T> or (ILogic and IDependentViewModel) or IModel");
}
}
}
