private IMethodReturn InterceptPropertySet(IMethodInvocation input, GetNextInterceptionBehaviorDelegate getNext)
{
IMethodReturn result;
var propertyName = input.MethodBase.Name.Substring(4);
var objectType = input.MethodBase.DeclaringType;
var getMethod = objectType.GetMethod(input.MethodBase.Name.Replace("set_", "get_"));
var oldValue = getMethod.Invoke(input.Target, null);
var newVlaue = input.Arguments[0];
if (!Equals(oldValue, newVlaue))
{
var changingHandler = PropertyChanging;
if (changingHandler != null)
{
var changingArgs = GetChangingArgs(input, propertyName);
changingHandler(input.Target, changingArgs);
}
var extChangeNotify = input.Target as IExternalPropertyChangeNotify;
if (extChangeNotify != null)
{
extChangeNotify.OnPropertyChanging(propertyName);
}
result = getNext()(input, getNext);
if (extChangeNotify != null)
{
extChangeNotify.OnPropertyChanged(propertyName);
}
var changedHandler = PropertyChanged;
if (changedHandler != null)
{
var changedArgs = GetChangedArgs(input, propertyName);
changedHandler(input.Target, changedArgs);
List <string> propertyChain;
if (_changeWithMap.TryGetValue(propertyName, out propertyChain))
{
foreach (var p in propertyChain)
{
var args = GetChangedArgs(input, p);
changedHandler(input.Target, args);
}
}
List <MethodInfo> methodChain;
if (_invokeWithMap.TryGetValue(propertyName, out methodChain))
{
var methodInvoked = input.Target as IMethodAutoInvoked;
foreach (var method in methodChain)
{
var parameters = method.GetParameters();
if (parameters.Length == 0)
{
method.Invoke(input.Target, new object[0]);
if (methodInvoked != null)
{
methodInvoked.OnMethodInvoked(method.Name, null);
}
}
else if (parameters[0].ParameterType.IsCompatiableWith <InvokeContext>())
{
var invokeContext = InvokeContext.Create(propertyName, oldValue, newVlaue);
method.Invoke(input.Target, new object[] { invokeContext });
if (methodInvoked != null)
{
methodInvoked.OnMethodInvoked(method.Name, invokeContext);
}
}
}
}
List <IInvalidatableCommand> commandChain;
if (_invalidateWithMap.TryGetValue(propertyName, out commandChain))
{
foreach (var method in commandChain)
{
method.Invalidate();
}
}
}
}
else
{
result = getNext()(input, getNext);
}
return(result);
}