JavaFX creating a new scene from KeyCombination correctly - model-view-controller

Question

I dont like menu bars so I am limiting my application to KeyCombinations to spawn events. I have the key combination working however I have a feeling I am not using controllers correctly. I need to edit the new scene within my controller but instead I find myself doing so within the try/catch of the KeyCombination event.
I would like to make all changes to the scene in class SettingsController.java
where I create a new scene/view
final KeyCombination settingsCMD = new KeyCodeCombination(KeyCode.S, KeyCombination.CONTROL_DOWN);
scene.addEventHandler(KeyEvent.KEY_PRESSED, new EventHandler<KeyEvent>()
{
#Override
public void handle(KeyEvent event)
{
if (settingsCMD.match(event))
{
System.out.println("CTRL + S was pressed on " + name + " display\n" +
"Opening Settings Scene");
/*
* This is where we need to launch a scene for settings
*/
try
{
Parent root = FXMLLoader.load(getClass().getResource("/sample/view/settingsscreen.fxml"));
Stage settingsStage = new Stage();
settingsStage.setTitle("Settings");
settingsStage.setScene(new Scene(root, 500 , 400));
settingsStage.show();
// This really needs to be done in the controller. How do I do this?
JSON jsonTools = new JSON();
jsonTools.readJSONSettings();
jsonTools.writeJSONSettings();
} catch (Exception e)
{
e.printStackTrace();
}
}
}
});
SettingsController.java
public class SettingsController
{
#FXML private TextField hostname;
public String getText()
{
String textProp = textProperty().get();
System.out.println("testProperty is " + textProp + "\n");
return textProp;
}
public void setText(String value)
{
textProperty().set(value);
}
private StringProperty textProperty()
{
return hostname.textProperty();
}
}

Answer 1

You can get a reference to the view controller class from the FXMLLoader:
FXMLLoader loader = new FXMLLoader(getClass().getResource(resource));
Scene scene = new Scene(loader.load());
parentStage.setScene(scene);
Controller controller = loader.getController();
On this reference you can call the appropriate method
final KeyCombination settingsCMD = new KeyCodeCombination(KeyCode.S, KeyCombination.CONTROL_DOWN);
scene.addEventHandler(KeyEvent.KEY_PRESSED, new EventHandler<KeyEvent>()
{
#Override
public void handle(KeyEvent event)
{
if (settingsCMD.match(event))
{
System.out.println("CTRL + S was pressed on " + name + " display\n" +
"Opening Settings Scene");
/*
* This is where we need to launch a scene for settings
*/
try
{
FXMLLoader loader = new FXMLLoader.load(getClass().getResource("/sample/view/settingsscreen.fxml"));
Parent root = loader.load();
SettingsController controller = loader.getController();
Stage settingsStage = new Stage();
settingsStage.setTitle("Settings");
settingsStage.setScene(new Scene(root, 500 , 400));
settingsStage.show();
controller.yourMethod();
} catch (Exception e)
{
e.printStackTrace();
}
}
}
});