eject button functionality

src/slic3r/GUI/GUI_App.cpp

@@ -275,7 +275,7 @@ bool GUI_App::on_init_inner()
         this->obj_manipul()->update_if_dirty();
 
 
-		//RemovableDriveManager::get_instance().update(wxGetLocalTime());
+		RemovableDriveManager::get_instance().update(wxGetLocalTime(), true);
 
 
         // Preset updating & Configwizard are done after the above initializations,

src/slic3r/GUI/Plater.cpp

@@ -4694,7 +4694,7 @@ void Plater::export_gcode()
 	{
 		if (!RemovableDriveManager::get_instance().is_path_on_removable_drive(start_dir))
 		{
-			start_dir = RemovableDriveManager::get_instance().get_last_drive_path();
+			start_dir = RemovableDriveManager::get_instance().get_drive_path();
 		}
 	}
     wxFileDialog dlg(this, (printer_technology() == ptFFF) ? _(L("Save G-code file as:")) : _(L("Save SL1 file as:")),
@@ -4995,11 +4995,11 @@ void Plater::send_gcode()
 
 void Plater::eject_drive()
 {
-	if (GUI::RemovableDriveManager::get_instance().update())
+	if (GUI::RemovableDriveManager::get_instance().update(0, true))
 	{
 		RemovableDriveManager::get_instance().erase_callbacks();
 		RemovableDriveManager::get_instance().add_callback(std::bind(&Plater::drive_ejected_callback, this));
-		RemovableDriveManager::get_instance().eject_drive(RemovableDriveManager::get_instance().get_last_drive_path());		
+		RemovableDriveManager::get_instance().eject_drive(RemovableDriveManager::get_instance().get_last_save_path());
 	}	
 }
 void Plater::drive_ejected_callback()

src/slic3r/GUI/RemovableDriveManager.cpp

@@ -198,15 +198,16 @@ INT_PTR WINAPI WinProcCallback(HWND hWnd, UINT message, WPARAM wParam, LPARAM lP
 			DEVICE_NOTIFY_WINDOW_HANDLE // type of recipient handle
 		);
 		break;
+	/*
 	case WM_DEVICECHANGE:
 	{
 		if(wParam == DBT_DEVICEREMOVECOMPLETE)
 		{
-			std::cout << "WM_DEVICECHANGE\n";
-			RemovableDriveManager::get_instance().update();
+-			RemovableDriveManager::get_instance().update(0, true);
 		}
 	}
 	break;
+	*/
 	default:
 		// Send all other messages on to the default windows handler.
 		lRet = DefWindowProc(hWnd, message, wParam, lParam);
@@ -403,7 +404,7 @@ RemovableDriveManager::RemovableDriveManager():
 
 void RemovableDriveManager::init()
 {
-	add_callback([](void) { RemovableDriveManager::get_instance().print(); });
+	//add_callback([](void) { RemovableDriveManager::get_instance().print(); });
 #if _WIN32
 	register_window();
 #elif __APPLE__
@@ -441,8 +442,18 @@ bool  RemovableDriveManager::is_drive_mounted(const std::string &path)
 	}
 	return false;
 }
-
-std::string RemovableDriveManager::get_last_drive_path()
+std::string RemovableDriveManager::get_drive_path()
+{
+	if (m_current_drives.size() == 0)
+	{
+		reset_last_save_path();
+		return "";
+	}
+	if (m_last_save_path != "")
+		return m_last_save_path;
+	return m_current_drives.back().path;
+}
+std::string RemovableDriveManager::get_last_save_path()
 {
 	return m_last_save_path;
 }
@@ -456,7 +467,7 @@ void RemovableDriveManager::check_and_notify()
 	if(m_drives_count != m_current_drives.size())
 	{
 		//std::cout<<" vs "<< m_current_drives.size();
-		if(m_drives_count > m_current_drives.size() && m_last_save_path != "" && !is_drive_mounted(m_last_save_path))
+		if(m_callbacks.size() != 0 && m_drives_count > m_current_drives.size() && m_last_save_path != "" && !is_drive_mounted(m_last_save_path))
 		{
 			for (auto it = m_callbacks.begin(); it != m_callbacks.end(); ++it)
 			{
@@ -485,6 +496,7 @@ void RemovableDriveManager::set_last_save_path(const std::string& path)
 }
 bool RemovableDriveManager::is_last_drive_removed()
 {
+	m_drives_count = m_current_drives.size();
 	if(m_last_save_path == "")
 	{
 		return true;

src/slic3r/GUI/RemovableDriveManager.hpp

@@ -32,10 +32,11 @@ public:
 	
 	//update() searches for removable devices, returns false if empty.
 	void init();
-	bool update(const long time = 0, bool check = true);  //time = 0 is forced update, time expects wxGetLocalTime()
+	bool update(const long time = 0, bool check = false);  //time = 0 is forced update, time expects wxGetLocalTime()
 	bool is_drive_mounted(const std::string &path);
 	void eject_drive(const std::string &path);
-	std::string get_last_drive_path();
+	std::string get_last_save_path();
+	std::string get_drive_path();
 	std::vector<DriveData> get_all_drives();
 	bool is_path_on_removable_drive(const std::string &path);
 	void add_callback(std::function<void()> callback); // callback will notify only if device with last save path was removed

src/slic3r/GUI/RemovableDriveManagerMM.mm

@@ -17,7 +17,7 @@
 -(void) on_device_unmount: (NSNotification*) notification
 {
     NSLog(@"on device change");
-    Slic3r::GUI::RemovableDriveManager::get_instance().update();
+    Slic3r::GUI::RemovableDriveManager::get_instance().update(0,true);
 }
 -(void) add_unmount_observer
 {