public void RedoLastCommand()
{
if (UndoHistory.Count == 0)
{
throw new InvalidOperationException("Il n'y a aucune action à redo.");
}
Command LastCmdToRedo = UndoHistory.Pop().GetCommand();
if (LastCmdToRedo.CanDo(this))
{
LastCmdToRedo.Do(this);
CommandHistory.Push(new CommandMemento(LastCmdToRedo));
if (LastCmdToRedo is MovePiece)
{
MovePieceCount++;
}
if (LastCmdToRedo is MoveBall)
{
MoveBallCount++;
}
}
else
{
throw new InvalidOperationException("Impossible de refaire la dernière action :" + LastCmdToRedo.GetType() + "\n");
}
}
/// <summary>
/// Undoes the last change made and pushes it to the redo stack,
/// if possible.
/// </summary>
public void Undo()
{
if (CanUndo())
{
RedoHistory.Push(new AppPalUndo(Palette, UndoHistory.Peek().Name));
var state = UndoHistory.Pop();
SetPalette(state.Palette, false);
}
}
/// <summary>
/// Handles the event that occurs when the redo menu is clicked.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void RedoTextMenuClick(object sender, EventArgs e)
{
string edit = (string)UndoHistory.Pop(); // Edit string
int loc = (int)UndoHistory.Pop(); // Location of edit
bool isDel = (bool)UndoHistory.Pop(); // Indicates whether the edit is a deletion
EditHistory.Push(isDel);
EditHistory.Push(loc);
EditHistory.Push(edit);
DoEdit(isDel, loc, edit);
}
/// <summary>
/// Undoes the last change made and pushes it to the redo stack,
/// if possible.
/// </summary>
public void Undo()
{
if (CanUndo())
{
RedoHistory.Push(new AppState(HsvColor, SchemeType));
AppState s = UndoHistory.Pop();
SetColor(s.Color, false, false);
SetSchemeType(s.SchemeType, false, false);
// because we didn't use the setters to fire events
// because we'd be wastefully firing two otherwise
OnResultChanged(new EventArgs());
}
}