fix: contextmenu getInstance added

src/lib_gui/qt/element/QtUndoRedo.cpp

@@ -58,14 +58,14 @@ void QtUndoRedo::redo()
 void QtUndoRedo::setUndoButtonEnabled(bool enabled)
 {
     m_undoButton->setEnabled(enabled);
-	QtContextMenu::enableUndo(enabled);
+	QtContextMenu::getInstance()->enableUndo(enabled);
 
 }
 
 void QtUndoRedo::setRedoButtonEnabled(bool enabled)
 {
     m_redoButton->setEnabled(enabled);
-	QtContextMenu::enableRedo(enabled);
+	QtContextMenu::getInstance()->enableRedo(enabled);
 }
 
 void QtUndoRedo::refreshStyle()

src/lib_gui/qt/utility/QtContextMenu.cpp

@@ -23,30 +23,7 @@ QtContextMenu::QtContextMenu(QContextMenuEvent* event, QWidget* origin)
 	: m_menu(origin)
 	, m_point(event->globalPos())
 {
-	if (!s_instance)
+	getInstance();
-	{
-		s_instance = new QtContextMenu();
-
-		s_undoAction = new QAction(tr("Back"), s_instance);
-		s_undoAction->setStatusTip(tr("Go back to last active symbol"));
-		s_undoAction->setToolTip(tr("Go back to last active symbol"));
-		connect(s_undoAction, SIGNAL(triggered()), s_instance, SLOT(undoActionTriggered()));
-
-		s_redoAction = new QAction(tr("Forward"), s_instance);
-		s_redoAction->setStatusTip(tr("Go forward to next active symbol"));
-		s_redoAction->setToolTip(tr("Go forward to next active symbol"));
-		connect(s_redoAction, SIGNAL(triggered()), s_instance, SLOT(redoActionTriggered()));
-
-		s_copyFullPathAction = new QAction(tr("Copy Full Path"), s_instance);
-		s_copyFullPathAction->setStatusTip(tr("Copies the path of this file to the clipboard"));
-		s_copyFullPathAction->setToolTip(tr("Copies the path of this file to the clipboard"));
-		connect(s_copyFullPathAction, SIGNAL(triggered()), s_instance, SLOT(copyFullPathActionTriggered()));
-
-		s_openContainingFolderAction = new QAction(tr("Open Containing Folder"), s_instance);
-		s_openContainingFolderAction->setStatusTip(tr("Opens the folder that contains this file"));
-		s_openContainingFolderAction->setToolTip(tr("Opens the folder that contains this file"));
-		connect(s_openContainingFolderAction, SIGNAL(triggered()), s_instance, SLOT(openContainingFolderActionTriggered()));
-	}
 
 	addUndoActions();
 }
@@ -80,6 +57,36 @@ void QtContextMenu::addFileActions(FilePath filePath)
 	addAction(s_openContainingFolderAction);
 }
 
+QtContextMenu* QtContextMenu::getInstance()
+{
+	if (!s_instance)
+	{
+		s_instance = new QtContextMenu();
+
+		s_undoAction = new QAction(tr("Back"), s_instance);
+		s_undoAction->setStatusTip(tr("Go back to last active symbol"));
+		s_undoAction->setToolTip(tr("Go back to last active symbol"));
+		connect(s_undoAction, SIGNAL(triggered()), s_instance, SLOT(undoActionTriggered()));
+
+		s_redoAction = new QAction(tr("Forward"), s_instance);
+		s_redoAction->setStatusTip(tr("Go forward to next active symbol"));
+		s_redoAction->setToolTip(tr("Go forward to next active symbol"));
+		connect(s_redoAction, SIGNAL(triggered()), s_instance, SLOT(redoActionTriggered()));
+
+		s_copyFullPathAction = new QAction(tr("Copy Full Path"), s_instance);
+		s_copyFullPathAction->setStatusTip(tr("Copies the path of this file to the clipboard"));
+		s_copyFullPathAction->setToolTip(tr("Copies the path of this file to the clipboard"));
+		connect(s_copyFullPathAction, SIGNAL(triggered()), s_instance, SLOT(copyFullPathActionTriggered()));
+
+		s_openContainingFolderAction = new QAction(tr("Open Containing Folder"), s_instance);
+		s_openContainingFolderAction->setStatusTip(tr("Opens the folder that contains this file"));
+		s_openContainingFolderAction->setToolTip(tr("Opens the folder that contains this file"));
+		connect(s_openContainingFolderAction, SIGNAL(triggered()), s_instance, SLOT(openContainingFolderActionTriggered()));
+	}
+
+	return s_instance;
+}
+
 void QtContextMenu::addSeparator()
 {
 	m_menu.addSeparator();

src/lib_gui/qt/utility/QtContextMenu.h

@@ -21,12 +21,14 @@ public:
 	void addUndoActions();
 	void addFileActions(FilePath filePath);
 
+	static QtContextMenu* getInstance();
+
 	void addSeparator();
 
 	void show();
 
-	static void enableUndo(bool enabled);
+	void enableUndo(bool enabled);
-	static void enableRedo(bool enabled);
+	void enableRedo(bool enabled);
 
 private slots:
 	void undoActionTriggered();