+// Copyright (C) 2014-2019 CEA/DEN, EDF R&D
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+
+#include "ModuleBase_WidgetUndoLabel.h"
+#include "ModuleBase_IWorkshop.h"
+
+#include <QPushButton>
+#include <QLayout>
+#include <QString>
+#include <QLabel>
+
+ModuleBase_WidgetUndoLabel::ModuleBase_WidgetUndoLabel(QWidget* theParent,
+ ModuleBase_IWorkshop* theWorkshop,
+ const Config_WidgetAPI* theData)
+ : ModuleBase_WidgetLabel(theParent, theData),
+ myWorkshop(theWorkshop)
+{
+ myUndoBtn = new QPushButton(tr("Undo"), this);
+ myUndoBtn->hide();
+ layout()->addWidget(myUndoBtn);
+ connect(myUndoBtn, SIGNAL(clicked(bool)), SLOT(onUndo()));
+}
+
+
+bool ModuleBase_WidgetUndoLabel::restoreValueCustom()
+{
+ bool aRes = ModuleBase_WidgetLabel::restoreValueCustom();
+ bool aError = myLabel->text().length() > 0;
+ myUndoBtn->setVisible(aError);
+ myWorkshop->setCancelEnabled(!aError);
+ return aRes;
+}
+
+
+void ModuleBase_WidgetUndoLabel::onUndo()
+{
+ myWorkshop->undo();
+}
\ No newline at end of file