void OnAggregatedObjectHasUnsavedChangesChanged(object sender, EventArgs e)
{
TrackableModelBase obj = (TrackableModelBase)sender;
if (obj.HasUnsavedChanges)
{
HasUnsavedChanges = true;
}
}
public void TrackChanges()
{
PropertyChanged += (s, e) =>
{
PropertyInfo property = GetType().GetRuntimeProperty(e.PropertyName);
if (!TrackPropertyChanges(property))
{
return;
}
HasUnsavedChanges = true;
};
foreach (PropertyInfo currentProperty in GetType().GetRuntimeProperties())
{
PropertyInfo property = currentProperty;
if (!typeof(TrackableModelBase).GetTypeInfo().IsAssignableFrom(property.PropertyType.GetTypeInfo()))
{
continue;
}
if (!TrackPropertyChanges(property))
{
continue;
}
TrackableModelBase oldValue = null;
PropertyChangedEventHandler onAggregatedPropertyChanged = (s, e) =>
{
if (e.PropertyName != property.Name)
{
return;
}
TrackableModelBase newValue = (TrackableModelBase)property.GetValue(this);
if (oldValue != null)
{
oldValue.HasUnsavedChangesChanged -= OnAggregatedObjectHasUnsavedChangesChanged;
}
if (newValue != null)
{
newValue.HasUnsavedChangesChanged += OnAggregatedObjectHasUnsavedChangesChanged;
}
oldValue = newValue;
};
PropertyChanged += onAggregatedPropertyChanged;
onAggregatedPropertyChanged(this, new PropertyChangedEventArgs(property.Name));
}
}