passing my Class JFrame object into a side function

Question

I have created a side class to help me manage functions that i reuses in all of my GUI JFrames

i am using an undecorated JFrame, and i have added a simple functions to be able to drag it around

public class SideFunctions {

static int xMouse, yMouse;

public static void frameDragMouseDragged(JFrame frame, MouseEvent e) {
    int x = e.getXOnScreen();
    int y = e.getYOnScreen();

    frame.setLocation(x - xMouse, y - yMouse);
}

public static void frameDragMouseClicked(JFrame frame, MouseEvent e) {
    xMouse = e.getX();
    yMouse = e.getY();
}

inside my EntranceScreen class which extends JFrame i try to do this

    private void createFrameDragLabel() {
    frameDrag = new JLabel();
    frameDrag.addMouseMotionListener(new MouseMotionAdapter() {
        @Override
        public void mouseDragged(MouseEvent arg0) {
            SideFunctions.frameDragMouseDragged(this, arg0);
        }
    });
    frameDrag.addMouseListener(new MouseAdapter() {
        @Override
        public void mousePressed(MouseEvent arg0) {
            SideFunctions.frameDragMouseClicked(this, arg0);
        }
    });
    frameDrag.setBounds(0, 0, 700, 400);
}

i want 'this' to refer to the JFrame instance but it is refering to the MouseMotionAdapter / MouseAdapter, how can i pass the JFrame object itself?

Rocco · Accepted Answer · 2021-04-20T13:36:21.967

1

this refers to the most inner class you currently are, so the anonymous MouseAdapter. Use EntranceScreen.this instead.

edited Apr 20 '21 at 13:36

answered Apr 20 '21 at 13:27

Rocco

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passing my Class JFrame object into a side function

1 Answers1