public MethodInfo[] getAddRemoveMethodsForEvent(Type targetType, String eventName)
{
ParamChecker.AssertParamNotNull(targetType, "targetType");
ParamChecker.AssertParamNotNull(eventName, "eventName");
MethodInfo[] addRemoveMethods;
EventKeyItem keyItem = new EventKeyItem(targetType, eventName);
lock (typeToAddRemoveMethodsMapOld)
{
addRemoveMethods = DictionaryExtension.ValueOrDefault(typeToAddRemoveMethodsMapOld, keyItem);
if (addRemoveMethods != null)
{
return(addRemoveMethods);
}
}
MethodInfo addMethod = targetType.GetMethod("add_" + eventName);
MethodInfo removeMethod = targetType.GetMethod("remove_" + eventName);
if (addMethod == null || removeMethod == null)
{
throw new ExtendableException("No autogenerated event methods for event field '" + eventName + "' found on type " + targetType.Name
+ ". Looked for a member like 'public event " + typeof(PropertyChangedEventHandler).Name + " " + eventName + ";");
}
addRemoveMethods = new MethodInfo[] { addMethod, removeMethod };
lock (typeToAddRemoveMethodsMapOld)
{
if (!typeToAddRemoveMethodsMapOld.ContainsKey(keyItem))
{
typeToAddRemoveMethodsMapOld.Add(keyItem, addRemoveMethods);
}
}
return(addRemoveMethods);
}
public override bool Equals(Object obj)
{
if (Object.ReferenceEquals(obj, this))
{
return(true);
}
if (!(obj is EventKeyItem))
{
return(false);
}
EventKeyItem other = (EventKeyItem)obj;
return(Object.Equals(type, other.type) && Object.Equals(eventName, other.eventName));
}
protected MethodInfo[] getAddRemoveMethodsForEvent(Type targetType)
{
ParamChecker.AssertParamNotNull(targetType, "targetType");
MethodInfo[] addRemoveMethods;
EventKeyItem keyItem = new EventKeyItem(targetType, null);
lock (typeToAddRemoveMethodsMapOld)
{
addRemoveMethods = DictionaryExtension.ValueOrDefault(typeToAddRemoveMethodsMapOld, keyItem);
if (addRemoveMethods != null)
{
return(addRemoveMethods);
}
}
MethodInfo[] methods = targetType.GetMethods();
MethodInfo addMethod = null, removeMethod = null;
foreach (MethodInfo method in methods)
{
if (!method.IsSpecialName)
{
// Look for special methods autogenerated by the 'event' keyword
continue;
}
ParameterInfo[] paramInfos = method.GetParameters();
if (paramInfos.Length != 1)
{
// The autogenerated methods by the 'event' keyword always have exactly 1 argument
continue;
}
String methodName = method.Name;
if (methodName.StartsWith("add_"))
{
if (addMethod != null)
{
throw new ExtendableException("Autogenerated event methods not uniquely resolvable. Maybe there are more than exactly 1 members like 'public event <EventType> <EventName>;' on type " + targetType.FullName + "?");
}
addMethod = method;
}
else if (methodName.StartsWith("remove_"))
{
if (removeMethod != null)
{
throw new ExtendableException("Autogenerated event methods not uniquely resolvable. Maybe there are more than exactly 1 members like 'public event <EventType> <EventName>;' on type " + targetType.FullName + "?");
}
removeMethod = method;
}
}
if (addMethod == null || removeMethod == null)
{
throw new ExtendableException("No autogenerated event methods found. Looked for a member like 'public event <EventType> <EventName>;' on type " + targetType.FullName);
}
addRemoveMethods = new MethodInfo[] { addMethod, removeMethod };
lock (typeToAddRemoveMethodsMapOld)
{
if (!typeToAddRemoveMethodsMapOld.ContainsKey(keyItem))
{
typeToAddRemoveMethodsMapOld.Add(keyItem, addRemoveMethods);
}
}
return(addRemoveMethods);
}
