private void ProjectManager_ProjectChanged(object sender, EventArgs e)
{
UndoHistory.Clear();
RedoHistory.Clear();
HistoryLimitExceeded = false;
CurrentChangeID = 0;
}
public void ClearHistory()
{
UndoHistory.Clear();
RedoHistory.Clear();
HistoryLimitExceeded = false;
ProjectIsModified = false;
CurrentChangeID = 0;
}
public override void DiscardChanges()
{
_directImage.Render();
UndoHistory.Clear();
RedoHistory.Clear();
NotifyOfPropertyChange(() => CanUndo);
NotifyOfPropertyChange(() => CanRedo);
}
private void AddAction(ChangeAction action)
{
RedoHistory.Clear();
UndoHistory.Add(action);
action.ChangeID = ++CurrentChangeID;
if (UndoHistory.Count > MaxHistory)
{
HistoryLimitExceeded = true;
UndoHistory.RemoveAt(0);
}
UndoHistoryChanged?.Invoke(this, EventArgs.Empty);
}
public override void SaveChanges()
{
try
{
_directImage.SaveImage();
UndoHistory.Clear();
RedoHistory.Clear();
NotifyOfPropertyChange(() => CanUndo);
NotifyOfPropertyChange(() => CanRedo);
IsModified = false;
var changeEvent = new ArrangerChangedEvent(_projectArranger, ArrangerChange.Pixels);
_events.PublishOnUIThread(changeEvent);
}
catch (Exception ex)
{
_windowManager.ShowMessageBox($"Could not save the pixel arranger contents\n{ex.Message}\n{ex.StackTrace}", "Save Error");
}
}
/// <summary>
/// Pushes the current state of the application to the undo stack, and purges the redo stack.
/// </summary>
private void PushUndo()
{
UndoHistory.Push(new AppState(HsvColor, SchemeType));
RedoHistory.Clear();
}
/// <summary>
/// Pushes the current state of the application to the undo stack, and purges the redo stack.
/// </summary>
private void PushUndo(string action)
{
UndoHistory.Push(new AppPalUndo(Palette, action));
RedoHistory.Clear();
}