public void AddStep(string stepDescription, Action reversionAction)
{
BeginInvoke((Action)(() => {
EditReversionStep newStep = new EditReversionStep(stepDescription, reversionAction);
historyList.Items.Add(newStep);
if (historyList.Items.Count > MAX_STEPS_TO_RETAIN)
{
historyList.Items.RemoveAt(0);
}
historyList.SelectedItem = newStep;
}));
}
private void UndoUpToSelected()
{
List <EditReversionStep> stepsAsList = historyList.Items.Cast <EditReversionStep>().ToList();
EditReversionStep selectedStep = historyList.SelectedItem as EditReversionStep;
if (selectedStep == null)
{
MessageBox.Show(this, "Please select a step to revert to first.", "Undo");
return;
}
EditReversionStep curStep;
do
{
(curStep = stepsAsList.PopLast()).ReversionAction();
} while (curStep != selectedStep);
historyList.Items.Clear();
foreach (EditReversionStep ers in stepsAsList)
{
historyList.Items.Add(ers);
}
historyList.SelectedIndex = historyList.Items.Count - 1;
}