public void HandleWhenChanged <TProperty>(ChangedEventHandler <TProperty> propertyChangedHandler, int propertyPathPos, params string[] propertyPath)
{
int pathCount = propertyPath.Length - propertyPathPos;
string currentpathPropertyName = propertyPath[propertyPathPos];
if (pathCount > 1)
{
var propertyInfo = this.GetType().GetProperty(currentpathPropertyName);
var propertyType = propertyInfo.PropertyType;
Type iNotifyingObjectType = typeof(INotifyingObject);
//var notifyingObjectType = typeof(NotifyingObject<>);
if (iNotifyingObjectType.IsAssignableFrom(propertyType))
{
INotifyingObject childNotifyingObject = (INotifyingObject)propertyInfo.GetValue(this, null);
if (childNotifyingObject != null)
{
childNotifyingObject.HandleWhenChanged(propertyChangedHandler, propertyPathPos + 1, propertyPath);
}
else
{
PropertyEventsPath currentPropertyEventsPath;
if (_propertiesEvents == null)
{
_propertiesEvents = new Dictionary <string, PropertyEventsPath>();
currentPropertyEventsPath = new PropertyEventsPath();
_propertiesEvents.Add(currentpathPropertyName, currentPropertyEventsPath);
}
else
{
currentPropertyEventsPath = _propertiesEvents.GetValueOrAddIfNotExists(currentpathPropertyName, () => new PropertyEventsPath());
}
for (int pathPos = propertyPathPos, i = 1; i < pathCount; pathPos++, i++)
{
PropertyEventsPath child;
if (currentPropertyEventsPath.PropertiesEvents == null)
{
currentPropertyEventsPath.PropertiesEvents = new Dictionary <string, PropertyEventsPath>();
child = new PropertyEventsPath();
currentPropertyEventsPath.PropertiesEvents.Add(propertyPath[pathPos], child);
}
else
{
child = currentPropertyEventsPath.PropertiesEvents.GetValueOrAddIfNotExists(propertyPath[pathPos], () => new PropertyEventsPath());
}
currentPropertyEventsPath = child;
}
if (currentPropertyEventsPath.Events == null)
{
currentPropertyEventsPath.Events = new List <Delegate>();
}
currentPropertyEventsPath.Events.Add(propertyChangedHandler);
}
}
else
{
throw new InvalidOperationException(string.Format(
"You can't specify a property that has a parent type which is not derived from NotifyingObject<{0}>. "
+ "Details: The type \"{0}\" is not derived from NotifyingObject<{0}>", propertyType.FullName));
}
}
else
{
PropertyEventsPath currentPropertyEventsPath;
if (_propertiesEvents == null)
{
_propertiesEvents = new Dictionary <string, PropertyEventsPath>();
currentPropertyEventsPath = new PropertyEventsPath();
currentPropertyEventsPath.Events = new List <Delegate>();
_propertiesEvents.Add(currentpathPropertyName, currentPropertyEventsPath);
}
else
{
currentPropertyEventsPath = _propertiesEvents.GetValueOrAddIfNotExists(currentpathPropertyName, () => new PropertyEventsPath());
if (currentPropertyEventsPath.Events == null)
{
currentPropertyEventsPath.Events = new List <Delegate>();
}
}
currentPropertyEventsPath.Events.Add(propertyChangedHandler);
}
}
