internal void DeleteItem(LabelItem item)
{
CancelEdit();
RemoveUndoItem uitem = new RemoveUndoItem(item, mLabelItems.IndexOf(item));
AddUndoItem(uitem);
uitem.Redo(LabelItems);
}
public void AddItem(string text)
{
CancelEdit();
var item = new LabelItem(this, text);
mLabelItems.Add(item);
AddUndoItem(new AddUndoItem(item, LabelItems.IndexOf(item)));
}
void Item_IsEditingChanged(object sender, PropertyChangedEventArgs e)
{
if (mCancelItem != sender || mCancelItem.IsEditing)
{
return;
}
mCancelItem.UnregisterHandler("IsEditing", Item_IsEditingChanged);
mCancelItem = null;
}
public void EditItem(LabelItem item)
{
CancelEdit();
mCancelItem = item;
mCancelItem.StartEdit((oname, nname) => AddUndoItem(new EditUndoItem(item, oname, nname)));
mCancelItem.RegisterHandler("IsEditing", Item_IsEditingChanged);
}
public EditUndoItem(LabelItem item, string old_text, string new_text)
{
Item = item;
OldText = old_text;
NewText = new_text;
}
public RemoveUndoItem(LabelItem item, int index)
: base(item, index)
{
}
public AddUndoItem(LabelItem item, int index)
: base(item, index)
{
}
public AddRemoveUndoItem(LabelItem item, int index)
{
IndexHint = index;
Item = item;
}