protected override void Modified(UndoRedoProperty property, object oldValue)
{
owner.OnListChanged(
new ListChangedEventArgs2(
ListChangedType.ItemChanged,
index,
property,
oldValue));
}
public bool Run(UndoRedoManager undoRedoManager, ActionType type)
{
switch (operation)
{
case Operation.Insert:
{
int count = owner.Count;
int index = this.index;
if (type != ActionType.Undo)
{
if ((index < 0) || (index > count))
{
return(false);
}
owner.List.Insert(index, item);
owner.OnListChanged(
new ListChangedEventArgs2(ListChangedType.ItemAdded, index));
}
else
{
if ((index < 0) || (index >= count))
{
return(false);
}
owner.List.RemoveAt(index);
owner.OnListChanged(
new ListChangedEventArgs2(
ListChangedType.ItemDeleted,
index,
item));
}
break;
}
case Operation.Remove:
{
type = type != ActionType.Undo ? ActionType.Undo : ActionType.Do;
goto case Operation.Insert;
}
case Operation.Set:
{
if ((index < 0) || (index >= owner.Count))
{
return(false);
}
T prevItem = owner.List[index];
if (EqualityComparer <T> .Default.Equals(prevItem, item))
{
return(false);
}
owner.List[index] = item;
item = prevItem;
owner.OnListChanged(
new ListChangedEventArgs2(ListChangedType.ItemChanged, index, item));
break;
}
}
return(true);
}
