pack Later - Java Swing

Java examples for Swing:JFrame

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Description

pack Later

Demo Code


//package com.java2s;

import java.awt.Component;

import java.awt.Window;

import java.awt.event.HierarchyEvent;
import java.awt.event.HierarchyListener;

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

import javax.swing.SwingUtilities;

public class Main {
    public static void packLater(final Window win, final Component parent) {
        win.pack();//from www.  ja  v  a  2  s.  c  o  m
        win.setLocationRelativeTo(parent);
        win.addWindowListener(new WindowAdapter() {
            @Override
            public void windowOpened(WindowEvent e) {
                win.pack();
                win.setLocationRelativeTo(parent);
            }
        });
    }

    public static void addWindowListener(final Component source,
            final WindowListener listener) {
        if (source instanceof Window) {
            ((Window) source).addWindowListener(listener);
        } else {
            source.addHierarchyListener(new HierarchyListener() {
                @Override
                public void hierarchyChanged(HierarchyEvent e) {
                    if ((e.getChangeFlags() & HierarchyEvent.SHOWING_CHANGED) == HierarchyEvent.SHOWING_CHANGED) {
                        SwingUtilities.getWindowAncestor(source)
                                .addWindowListener(listener);
                    }
                }
            });
        }
    }
}

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