/// <summary>
/// Construct a Change instance with actions for undo / redo.
/// </summary>
/// <param name="instance">The instance that changed.</param>
/// <param name="propertyName">The property name that changed. (Case sensitive, used by reflection.)</param>
/// <param name="oldValue">The old value of the property.</param>
/// <param name="newValue">The new value of the property.</param>
/// <returns>A Change that can be added to the UndoRoot's undo stack.</returns>
public static Change GetChange(ISongElement instance, string propertyName, object oldValue, object newValue)
{
var change = new DelegateChange(instance,
() => instance.GetType().GetProperty(propertyName).SetValue(instance, oldValue, null),
() => instance.GetType().GetProperty(propertyName).SetValue(instance, newValue, null),
new ChangeKey <object, string>(instance, propertyName)
);
return(change);
}
/// <summary>
/// Construct a Change instance with actions for undo / redo.
/// </summary>
/// <param name="instance">The instance that changed.</param>
/// <param name="propertyName">The property name that changed. (Case sensitive, used by reflection.)</param>
/// <param name="oldValue">The old value of the property.</param>
/// <param name="newValue">The new value of the property.</param>
/// <returns>A Change that can be added to the UndoRoot's undo stack.</returns>
public static Change GetChange(ISongElement instance, string propertyName, object oldValue, object newValue)
{
var change = new DelegateChange(instance,
() => instance.GetType().GetProperty(propertyName).SetValue(instance, oldValue, null),
() => instance.GetType().GetProperty(propertyName).SetValue(instance, newValue, null),
new ChangeKey<object, string>(instance, propertyName)
);
return change;
}
public static void OnChanging(ISongElement instance, Action undoAction, Action redoAction, string description)
{
if (!instance.Root.IsUndoEnabled)
{
return;
}
var ch = new DelegateChange(instance, undoAction, redoAction, new ChangeKey <object, string>(instance, description));
instance.Root.UndoManager.Root.AddChange(ch, description);
}
public void UndoRoot_Supports_Adding_ChangeSets_Directly()
{
var change = new DelegateChange(Document1.A,
() => Document1.A.Name = "Original",
() => Document1.A.Name = "NewValue",
new Tuple <object, string>(Document1.A, "Name"));
var undoRoot = UndoService.Current[Document1];
// var changeSet = new ChangeSet(undoRoot, "Change Document.A.Name", change);
undoRoot.AddChange(change, "Change Document.A.Name");
Assert.AreEqual(1, undoRoot.UndoStack.Count());
Assert.AreEqual(0, undoRoot.RedoStack.Count());
var origValue = Document1.A.Name;
undoRoot.Undo();
Assert.AreEqual("Original", Document1.A.Name);
undoRoot.Redo();
Assert.AreEqual("NewValue", Document1.A.Name);
}
public static void OnChanging(ISongElement instance, Action undoAction, Action redoAction, string description)
{
if (!instance.Root.IsUndoEnabled)
return;
var ch = new DelegateChange(instance, undoAction, redoAction, new ChangeKey<object, string>(instance, description));
instance.Root.UndoManager.Root.AddChange(ch, description);
}
