terminal function can be edited, edted value is applied to element

sources/undocommand/changeelementdatacommand.cpp

@@ -0,0 +1,39 @@
+/*
+        Copyright 2006-2021 The QElectroTech Team
+        This file is part of QElectroTech.
+
+        QElectroTech is free software: you can redistribute it and/or modify
+        it under the terms of the GNU General Public License as published by
+        the Free Software Foundation, either version 2 of the License, or
+        (at your option) any later version.
+
+        QElectroTech 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 General Public License for more details.
+
+        You should have received a copy of the GNU General Public License
+        along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "changeelementdatacommand.h"
+#include "../qetgraphicsitem/element.h"
+
+ChangeElementDataCommand::ChangeElementDataCommand(Element *element, ElementData new_data) :
+    m_element(element),
+    m_old_data(element->elementData()),
+    m_new_data(new_data)
+{
+    setText(QObject::tr("Modifier les propriétés d'un élement"));
+}
+
+void ChangeElementDataCommand::undo() {
+    if (m_element) {
+        m_element.data()->m_data = m_old_data;
+    }
+}
+
+void ChangeElementDataCommand::redo() {
+    if (m_element) {
+        m_element.data()->m_data = m_new_data;
+    }
+}