menu/application: Remove singleton.

The singleton pattern should not be used in most cases, because it
behaves like global variables.

5 files changed, 27 insertions, 39 deletions

diff --git a/src/main.cpp b/src/main.cpp
index 9e1ba84b..c9df9373 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -27,8 +27,8 @@
 
 int main (int argc, char** argv)
 {
-	usdx::Application::get_instance()->run();
-	usdx::Application::free();
+	usdx::Application app;
+	app.run();
 
 	return EXIT_SUCCESS;
 }
diff --git a/src/menu/application.cpp b/src/menu/application.cpp
index 92e6b8a8..520ea27f 100644
--- a/src/menu/application.cpp
+++ b/src/menu/application.cpp
@@ -41,14 +41,19 @@ namespace usdx
 	log4cpp::Category&  Application::log =
 		log4cpp::Category::getInstance("usdx.menu.application");
 
-	Application* Application::instance = NULL;
+	Config* Application::config = NULL;
 
-	Application::Application(Container* parent)
-		: Container(parent), config(NULL), display(NULL), fps_manager(NULL),
+	boost::thread::id Application::gl_thread;
+
+	Application::Application(void)
+		: Container(NULL), display(NULL), fps_manager(NULL),
 		  running(false), frames_per_second(50)
 	{
 		log4cpp::PropertyConfigurator::configure("log4cpp.property");
-		config = new Config();
+
+		if (config == NULL) {
+			config = new Config();
+		}
 
 		set_size(config->get_graphics_resolution());
 		SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO);
@@ -67,41 +72,23 @@ namespace usdx
 		}
 
 		SDL_Quit();
-
-		// reset instance to be able to recreate the singleton
-		instance = NULL;
-	}
-
-	Application* Application::get_instance(void)
-	{
-		if (! instance) {
-			instance = new Application(NULL);
-		}
-
-		return instance;
-	}
-
-	void Application::free(void)
-	{
-		delete instance;
-		instance = NULL;
 	}
 
 	Config* Application::get_config(void)
 	{
-		return get_instance()->config;
+		return config;
 	}
 
 	bool Application::is_gl_thread(void)
 	{
-		return boost::this_thread::get_id() == get_instance()->gl_thread;
+		return boost::this_thread::get_id() == gl_thread;
 	}
 
 	void Application::main_loop(SDL_Surface* display)
 	{
 		SDL_Event event;
 		EventManager event_manager;
-		MouseManager mouse_manager(event_manager);
+		MouseManager mouse_manager(this, event_manager);
 		event_thread = boost::thread(boost::bind(&EventManager::handle_events, &event_manager));
 
 		SoftwareMousePointer pointer(this, &event_manager);
diff --git a/src/menu/application.hpp b/src/menu/application.hpp
index a47bd42a..6d1b2b44 100644
--- a/src/menu/application.hpp
+++ b/src/menu/application.hpp
@@ -28,6 +28,7 @@
 #include <SDL/SDL.h>
 #include <SDL/SDL_framerate.h>
 #include <boost/thread/thread.hpp>
+#include <boost/noncopyable.hpp>
 #include <log4cpp/Category.hh>
 #include <list>
 
@@ -37,13 +38,12 @@
 
 namespace usdx
 {
-	class Application : public Container
+	class Application : public Container, public boost::noncopyable
 	{
 	private:
 		static log4cpp::Category&  log;
-		static Application* instance;
 
-		Config* config;
+		static Config* config;
 
 		SDL_Surface* display;
 		FPSmanager* fps_manager;
@@ -56,20 +56,17 @@ namespace usdx
 		 * This is the main loop.
 		 */
 		void main_loop(SDL_Surface* display);
-		boost::thread::id gl_thread;
+		static boost::thread::id gl_thread;
 		boost::thread event_thread;
 
 		void init_fps_manager(void);
 
 	protected:
-		Application(Container* parent);
 
 	public:
+		Application(void);
 		virtual ~Application();
 
-		static Application* get_instance(void);
-		static void free(void);
-
 		static Config* get_config(void);
 		static bool is_gl_thread(void);
 
diff --git a/src/menu/mouse_manager.cpp b/src/menu/mouse_manager.cpp
index 3be6cb1b..db4db7ea 100644
--- a/src/menu/mouse_manager.cpp
+++ b/src/menu/mouse_manager.cpp
@@ -24,6 +24,7 @@
 
 #include <cstddef>
 
+#include "application.hpp"
 #include "mouse_manager.hpp"
 #include "utils/rectangle.hpp"
 #include "container.hpp"
@@ -34,8 +35,8 @@ namespace usdx
 	log4cpp::Category& MouseManager::log =
 		log4cpp::Category::getInstance("usdx.menu.mouse_manager");
 
-	MouseManager::MouseManager(EventManager& event_manager)
-		: last_active(NULL)
+	MouseManager::MouseManager(Application* app, EventManager& event_manager)
+		: app(app), last_active(NULL)
 	{
 		mouse_move_connection = event_manager.mouse_move.connect(
 			boost::bind(&MouseManager::on_mouse_move, this, _1));
@@ -75,7 +76,7 @@ namespace usdx
 	{
 		if (current == NULL) {
 			// start search from top level
-			return Application::get_instance();
+			return app;
 		}
 
 		if (!current->get_absolut_rect().is_in(p)) {
diff --git a/src/menu/mouse_manager.hpp b/src/menu/mouse_manager.hpp
index 90e896c5..c977e85d 100644
--- a/src/menu/mouse_manager.hpp
+++ b/src/menu/mouse_manager.hpp
@@ -35,11 +35,14 @@
 
 namespace usdx
 {
+	class Application;
+
     class MouseManager
 	{
 	private:
 		static log4cpp::Category&  log;
 
+		Application *app;
 		DrawableControl *last_active;
 		MouseEvent event;
 
@@ -55,7 +58,7 @@ namespace usdx
 		void on_mouse_up(uint8_t button, const Point<int>& p);
 
 	public:
-		MouseManager(EventManager& event_manager);
+		MouseManager(Application* app, EventManager& event_manager);
 		virtual ~MouseManager();
 
 		/**