Regain javafx focus - javafx

Question

I have an application which runs in background. With jkeymaster I have registered a global hotkey to be fired although my application is not the active one. This is working. I now want to switch my background app in foreground again. Tried with this code:
import com.tulskiy.keymaster.common.HotKey;
import com.tulskiy.keymaster.common.HotKeyListener;
import com.tulskiy.keymaster.common.Provider;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
import javax.swing.*;
import java.awt.*;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
public class TestClientNotWorking extends Application {
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) throws AWTException {
Button btn = new Button();
btn.setText("Say 'Hello World'");
btn.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
System.out.println("Btn said 'Hello World!'");
}
});
HBox root = new HBox(btn);
primaryStage.setScene(new Scene(root, 300, 250));
primaryStage.show();
primaryStage.requestFocus();
Provider provider = Provider.getCurrentProvider(false);
provider.register(KeyStroke.getKeyStroke(KeyEvent.VK_SPACE,
InputEvent.ALT_MASK | InputEvent.SHIFT_MASK),
new HotKeyListener() {
#Override
public void onHotKey(HotKey hotKey) {
Platform.runLater(new Runnable() {
#Override
public void run() {
System.out.println("Recievd");
primaryStage.toFront();
btn.requestFocus();
}
});
}
});
}
}
What happens:
My stage is brought back to foreground, but the focus still remains in the app, were it was before and is not transferred to my primaryStage. Can you please help my how I could gain this?
Thanks in advance

Answer 1

I compiled and run the code. As far as I understand your expectations are:
start application, register key hook
minimize jfx window
press key combination (alt shift space in your case)
result: jfx window is in foreground state, 'Hello World' button is focused
btn.requestFocus() works properly on my OS without any changes but my guess you need to try setIconified\setMaximized instead of primaryStage.toFront();
I changed a little bit your code pls try it and let us know if it works as you want.
public class TestClientNotWorking extends Application {
private final Provider provider = Provider.getCurrentProvider(false);
public static void main(final String[] args) {
launch(args);
}
#Override
public void start(final Stage primaryStage) throws AWTException {
final Button btn = new Button();
btn.setText("Say 'Hello World'");
btn.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(final ActionEvent event) {
System.out.println("Btn said 'Hello World!'");
}
});
final HBox root = new HBox(btn);
primaryStage.setScene(new Scene(root, 300, 250));
primaryStage.show();
root.requestFocus();// remove focus from btn
final KeyStroke stroke = KeyStroke.getKeyStroke("ctrl SPACE");// stroke = KeyStroke.getKeyStroke(KeyEvent.VK_SPACE, InputEvent.SHIFT_MASK | InputEvent.ALT_MASK);
provider.register(stroke, new HotKeyListener() {
#Override
public void onHotKey(final HotKey hotKey) {
Platform.runLater(new Runnable() {
#Override
public void run() {
System.out.println("Recievd");
primaryStage.setIconified(false); // primaryStage.toFront();
btn.requestFocus(); // set focus on btn
}
});
}
});
}
#Override
public void stop() throws Exception {
super.stop();
provider.stop();
}
}