private void CloseToolStripMenuItem_Click(object sender, EventArgs e)
{
try
{
MainPanel.Close();
IsSaved = false;
SavePath = "";
UpdateTitle(Language.DICT["MainTitleEmptyName"]);
Undos.Clear();
Redos.Clear();
CurrentStatusLabel.Text = Language.DICT["StslblCloseSucceed"];
}
catch (Exception ex)
{
MyMessageBox.Show(Language.DICT["MainText"], Language.DICT["MsgFatalClose"] + ex.Message);
CurrentStatusLabel.Text = Language.DICT["StslblCloseFailed"];
}
}
/// <inheritdoc/>
public bool Undo()
{
if (Undos.Count > 0)
{
IsPaused = true;
var state = Undos.Pop();
if (Undos.Count == 0)
{
_canUndo.OnNext(false);
}
state.Undo.Invoke();
Redos.Push(state);
_canRedo.OnNext(true);
_canClear.OnNext(true);
IsPaused = false;
return(true);
}
return(false);
}
private void UndoToolStripMenuItem_Click(object sender, EventArgs e)
{
try
{
if (Undos.Count > 0)
{
MakeRedo();
Misc.DeepCopy(Undos.Last(), MainPanel.PalSource.Data);
Undos.RemoveAt(Undos.Count - 1);
MainPanel.Refresh();
CurrentStatusLabel.Text = Language.DICT["StslblUndoSucceed"];
}
}
catch (Exception ex)
{
MyMessageBox.Show(Language.DICT["MainTitle"], Language.DICT["MsgFatalUndo"] + ex.Message);
CurrentStatusLabel.Text = Language.DICT["StslblUndoFailed"];
}
}
/// <inheritdoc/>
public void Snapshot(Action undo, Action redo)
{
if (undo == null)
{
throw new ArgumentNullException(nameof(undo));
}
if (redo == null)
{
throw new ArgumentNullException(nameof(redo));
}
if (Redos.Count > 0)
{
Redos.Clear();
_canRedo.OnNext(false);
}
Undos.Push(new State(undo, redo));
_canUndo.OnNext(true);
_canClear.OnNext(true);
}
private void PushUndo(Undos undo)
{
_undos.Push(undo);
}
