Extract TemplatesMenu class from MainWindow (#5125)

include/MainWindow.h

@@ -148,7 +148,6 @@ public slots:
 
 	void emptySlot();
 	void createNewProject();
-	void createNewProjectFromTemplate( QAction * _idx );
 	void openProject();
 	bool saveProject();
 	bool saveProjectAs();
@@ -204,9 +203,7 @@ private:
 	QWidget * m_toolBar;
 	QGridLayout * m_toolBarLayout;
 
-	QMenu * m_templatesMenu;
 	QMenu * m_recentlyOpenedProjectsMenu;
-	int m_custom_templates_count;
 
 	struct keyModifiers
 	{
@@ -240,7 +237,6 @@ private:
 
 private slots:
 	void browseHelp();
-	void fillTemplatesMenu();
 	void openRecentlyOpenedProject( QAction * _action );
 	void showTool( QAction * _idx );
 	void updateRecentlyOpenedProjectsMenu();

include/TemplatesMenu.h

@@ -0,0 +1,23 @@
+#ifndef TEMPLATESMENU_H
+#define TEMPLATESMENU_H
+
+#include <QDir>
+#include <QMenu>
+
+class TemplatesMenu : public QMenu
+{
+	Q_OBJECT
+public:
+	TemplatesMenu(QWidget *parent = nullptr);
+	virtual ~TemplatesMenu() = default;
+
+private slots:
+	void createNewProjectFromTemplate( QAction * _idx );
+	void fillTemplatesMenu();
+	int addTemplatesFromDir( const QDir& dir );
+
+private:
+	int m_customTemplatesCount;
+};
+
+#endif // TEMPLATESMENU_H