private void mnuUndo_Click(object sender, EventArgs e)
{
UndoableTextOperation op = _undo.PeekUndo();
if (op != null)
{
if (Utils.AskToConfirm("Undo moving " + op.TextContents.Length +
" lines of text to " + op.Destfile + "?"))
{
op.Undo(this.listBox);
_undo.Undo();
}
}
}
void AddToFile(string destfile)
{
UndoableTextOperation op = new UndoableTextOperation();
op.Destfile = destfile;
op.Srcfile = _currentfile;
op.ListIndices = listBox.SelectedIndices.Cast <int>().ToArray();
op.TextContents = listBox.SelectedItems.Cast <string>().ToArray();
if (op.ListIndices.Length > 0)
{
op.Do(this.listBox);
_undo.Add(op);
}
else
{
MessageBox.Show("Nothing selected.");
}
}