public ReversibleInstancePropertyEdit(ReversibleInstancePropertySetter <TProperty> setter, TProperty oldValue,
TProperty newValue)
{
this.setter = setter;
this.oldValue = oldValue;
this.newValue = newValue;
}
/// <summary>
/// Set a property /field value, if a transaction is active it is transacted and undoable, if the owner supports INotifyPropertyChanged, the required events will be raised
/// </summary>
/// <typeparam name = "TProperty"></typeparam>
/// The property type to be set
/// <param name = "field"></param>
/// The field to be set
/// <param name = "newValue"></param>
/// The value to set the field to
/// <param name = "setter"></param>
/// The function to set and unset the field
/// <param name = "notifyPropertyName"></param>
/// A list of property names of the owner to raise notification on
internal static void SetModelValue <TProperty>(IPersistIfcEntity target, ref TProperty field, TProperty newValue,
ReversibleInstancePropertySetter <TProperty> setter,
string notifyPropertyName)
{
//The object must support Property Change Notification so notify
ISupportChangeNotification iPropChanged = target as ISupportChangeNotification;
if (iPropChanged != null)
{
Transaction.AddPropertyChange(setter, field, newValue);
#if SupportActivation
target.Activate(true);
#endif
iPropChanged.NotifyPropertyChanging(notifyPropertyName);
field = newValue;
iPropChanged.NotifyPropertyChanged(notifyPropertyName);
}
else
{
throw new Exception(
string.Format(
"Request to Notify Property Changes on type {0} that does not support ISupportChangeNotification",
target.GetType().Name));
}
}
/// <summary>
/// Adds a reversible property change to the current transaction (if any).
/// </summary>
/// <param name = "setter">A instance method (delegate) that sets the property of to a given value</param>
/// <typeparam name = "TProperty">Type of property</typeparam>
/// <param name = "oldValue">The present value of the property</param>
/// <param name = "newValue">The new value to be assigned to the property</param>
public static void AddPropertyChange <TProperty>(ReversibleInstancePropertySetter <TProperty> setter,
TProperty oldValue, TProperty newValue)
{
Transaction txn = _current;
if (txn != null)
{
txn.AddEdit(new ReversibleInstancePropertyEdit <TProperty>(setter, oldValue, newValue));
}
}
