package com.boydti.fawe.installer;

import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class MovablePanel extends JPanel {
    private Point initialClick;
    private JFrame parent;

    public MovablePanel(final JFrame parent) {
        this.parent = parent;

        addMouseListener(new MouseAdapter() {
            public void mousePressed(MouseEvent e) {
                initialClick = e.getPoint();
                getComponentAt(initialClick);
            }
        });

        addMouseMotionListener(new MouseMotionAdapter() {
            @Override
            public void mouseDragged(MouseEvent e) {

                // get location of Window
                int thisX = parent.getLocation().x;
                int thisY = parent.getLocation().y;

                // Determine how much the mouse moved since the initial click
                int xMoved = (thisX + e.getX()) - (thisX + initialClick.x);
                int yMoved = (thisY + e.getY()) - (thisY + initialClick.y);

                // Move window to this position
                int X = thisX + xMoved;
                int Y = thisY + yMoved;
                parent.setLocation(X, Y);
            }
        });
    }
}