Develop Reference

RightClick Menu not working after JFrame Resize

I am developing a Java Swing application that will have several panels in it, one of which is NASA's WorldWind. In this WorldWind panel I need to have a right click menu for various actions. I was successful in adding the right click menu and all is good, until the user resizes the window.
I am not sure what about that action would be causing the right click menu to stop working. The mouse listener is working fine still, but the menu no longer shows up. None of the objects get garbage collected, nothing seems to change.
Here is a quick sample of how my code is set up:
class ClickListener extends MouseAdapter {
public void mouseClicked(MouseEvent e) {
if (SwingUtilities.isRightMouseButton(e) == true) {
showRightClickMenu(e);
} else {
addPoint(e);
}
}
}
void showRightClickMenu(MouseEvent e) {
System.out.println("In Right Click");
if (menu == null) {
setupRightClickMenu();
}
menu.show(e.getComponent(), e.getX(), e.getY());
}
void setupRightClickMenu() {
menu = new JPopupMenu("RightClick");
JMenuItem button1 = new JMenuItem("Show Waypoint Table");
button1.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent arg0) {
// ptTable.showTable();
}
});
menu.add(button1);
JMenuItem button2 = new JMenuItem("Clear Waypoints");
button2.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent arg0) {
ptLayer.removeAllRenderables();
}
});
menu.add(button2);
}
I can set the size to whatever I want at application launch and the right click works, but once I resize, it fails. Any ideas?
UPDATE
Actually after playing with it a bit more and talking with someone else I am working with, it looks like it may be drawing the menu behind the WorldWind canvas. I am not sure why this is, but I need to make sure it shows in front of it.
I tried changing the JPopupMenu property talked about here, but that does not seem to help.

Java jpopupmenu on mouseExited

I'm trying to create system tray icon with two popup menus, one should be called with left mouse button and another with right. AWT offers simple way to create PopupMenu but it's not posible to call menu with left mouse button without making invisible JFrame or something. So, I find out that swing JPopupMenu can be called by any of mouse buttons. But JPopupMenu have bug (I don't know if this is really a bug or I'm not so good in Java) that it's not hiding when I press mouse outside JPopupMenu. I've tried to use mouse listener's function mouseExited, but it works only on JPopupMenu border. If mouse leaves JPopupMenu border it hides and I can't press any of JPopupMenu buttons. Maybe, anyone had the same problem and could help me find out how to make it work right.
public static JPopupMenu jpm;
public static TrayIcon ti;
public static void main(String args[]) throws IOException, AWTException,
ClassNotFoundException, InstantiationException,
IllegalAccessException, UnsupportedLookAndFeelException {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
SystemTray st = SystemTray.getSystemTray();
Image icon = ImageIO.read(SipLogin.class
.getResource("/resources/phone-yellow-small.png"));
ti = new TrayIcon(icon, "Sip login", null);
jpm = new JPopupMenu();
JMenuItem jmi1 = new JMenuItem("JMenuItem1");
JMenuItem jmi2 = new JMenuItem("JMenuItem2");
JMenuItem jmi3 = new JMenuItem("JMenuItem3");
JMenuItem jmi4 = new JMenuItem("JMenuItem4");
ti.addMouseListener(new MouseAdapter() {
public void mouseReleased(MouseEvent e) {
if (e.isPopupTrigger()) {
jpm.setLocation(e.getX(), e.getY());
jpm.setInvoker(jpm);
jpm.setVisible(true);
}
}
});
jpm.add(jmi1);
jpm.add(jmi2);
jpm.add(jmi3);
jpm.add(jmi4);
jpm.addMouseListener(new MouseAdapter() {
public void mouseExited(MouseEvent e) {
jpm.setVisible(false);
}
});
st.add(ti);
}

Take that one mouse listener and separate the left and right click:
Change from
ti.addMouseListener(new MouseAdapter() {
public void mouseReleased(MouseEvent e) {
if (e.isPopupTrigger()) {
jpm.setLocation(e.getX(), e.getY());
jpm.setInvoker(jpm);
jpm.setVisible(true);
}
}
});
to
ti.addMouseListener(new MouseAdapter() {
public void mouseReleased(MouseEvent e) {
if(e.getclickCount < 2){
if(e.getButton().equals(MouseEvent.Button1){
showPopup1();
}
if(e.getButton().equals(MouseEvent.Button3){
showPopup2();
}
}
}
});

thanks for very useful conversation, but I need to add some words:
Sometimes when you add menuItems the JPopupMenu behaves in unpredictable manner (it is not closed, when you mouseover your mouse from it).
In this case you need to delete the mouse motion listeners from your menu items
JMenuItem jmi1 = new JMenuItem("JMenuItem1");
jmi1.removeMouseMotionListener(jmi1.getMouseMotionListeners()[0]);
jmi1.removeMouseListener(jmi1.getMouseListeners()[0]);

Changing the Background of a button after it is clicked (i.e. after Action performed)

I am trying to change the background of a JButton after it is clicked. Currently my buttons are located in a GridLayout (3x3) and look like this:
tiles.add(new JButton(new AbstractAction("") {
#Override
public void actionPerformed(ActionEvent e) {
this.setIcon("foo.png");
}
}));
This does not work. How do I manipulate the background of the image from within the actionperformed?

A JToggleButton might be ideal for this, as shown on Swing JToolbarButton pressing
Note that you would need to add some code to ensure a button was only clickable once.
Alternately you might use a standard JButton and call AbstractButton.setDisabledIcon(Icon). Disable the button when clicked, and it will flip to the alternate icon.

You can create your own listener that implements the MouseListener. This way, you can control when the background of the button changes (when the mouse is released, pressed, etc). Here is an example
//Add the listener to the button
myButton.addMouseListener(new customActionListener());
//Create the listener
class customActionListener implements MouseListener {
public void mouseExited(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
Icon icon = new ImageIcon("icon.gif");
myButton.setIcon(icon);
}
public void mouseClicked(MouseEvent e) {
}
}
At whatever point you want to set the background back to its default, use:
myButton.setIcon(new ImageIcon());

Can't get keyboard focus on JTextField in JDialog

I have a Swing app that has a JDialog pop up and ask for a username and password. I thought it'd be good to have the keyboard focus already in the username field, but everything I've tried so far doesn't work (even though one solution I tried works for a different text field in the program), so....I need some help. Here's my code:
//JTextField usernameField = ...
JDialog dialog = pane.createDialog("Password:");
dialog.setVisible(true);
//Take 1
usernameField.requestFocusInWindow();
//Take 2
dialog.addWindowFocusListener(new WindowAdapter() {
public void windowGainedFocus(WindowEvent e) {
usernameField.requestFocusInWindow();
}
});
//Take 3 - This is what I used elsewhere quite successfully
dialog.addComponentListener(new ComponentAdapter() {
public void componentShown(ComponentEvent e ) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
usernameField.requestFocusInWindow();
}
});
}
});
For what it's worth, this is with Linux / X11 / Openbox. And when I use GTK, I have to press Tab once to select the appropriate field, but when I use Metal, I have to press it twice.
Thanks in advance.

See Dialog Focus for tips & strategies.

Right click on JButton

I am trying to write a Minesweeper clone in Java for fun. I have a grid of JButtons whose labels I will change to represent the danger count, flags, etc.
My problem is, I don't know how to get a right click on a JButton to depress the button. I've done the following:
button.addMouseListener(new MouseAdapter(){
public void mouseClicked(MouseEvent e){
boolean mine = field.isMine(x, y);
if (e.isPopupTrigger()) {
button.setText("F");
}
else {
if (mine) {
button.setText("X");
}
}
}
});
This doesn't seem to be working at all; the "F" is never shown, only the "X" part. But more importantly, this does nothing for depressing the button.
EDIT: Macs have popup trigger happen on mousePress, not mouseClick.
EDIT: Here's the solution I worked out based off of accepted answer:
button.addMouseListener(new MouseAdapter(){
boolean pressed;
#Override
public void mousePressed(MouseEvent e) {
button.getModel().setArmed(true);
button.getModel().setPressed(true);
pressed = true;
}
#Override
public void mouseReleased(MouseEvent e) {
//if(isRightButtonPressed) {underlyingButton.getModel().setPressed(true));
button.getModel().setArmed(false);
button.getModel().setPressed(false);
if (pressed) {
if (SwingUtilities.isRightMouseButton(e)) {
button.setText("F");
}
else {
button.setText("X");
}
}
pressed = false;
}
#Override
public void mouseExited(MouseEvent e) {
pressed = false;
}
#Override
public void mouseEntered(MouseEvent e) {
pressed = true;
}
});
add(button);
Minesweeper clone http://grab.by/1y9z

Button can't be pressed by right click. Add such a lines to you mouse listener
mousePressed:
if(isRightButtonPressed) {underlyingButton.getModel().setPressed(true));
mouseReleased:
if(needReset) {underlyingButton.getModel().setPressed(false));
or do there whatever want.

I wouldn't use isPopupTrigger but directly check for the right button:
button.addMouseListener(new MouseAdapter(){
public void mouseClicked(MouseEvent e){
boolean mine = field.isMine(x, y);
if (e.getButton() == MouseEvent.BUTTON2) {
button.setText("F");
}
...

Just a small addition: the simplest way to check for the right button is SwingUtilities.isRightMouseButton

As you have mentioned that checking for "mousePressed" solved your issue. And the Javadoc of isPopupTrigger would explain the need for this:
public boolean isPopupTrigger()
...
Note: Popup menus are triggered differently on different systems. Therefore, isPopupTrigger should be checked in both mousePressed and mouseReleased for proper cross-platform functionality.
Also see the section on The Mouse Listener API in the Java Swing tutorial.

MouseEvent has some properties
static int BUTTON1
static int BUTTON2
static int BUTTON3
among others. Check those when your event fires.
EDIT
public int getButton()
Returns which, if any, of the mouse buttons has changed state.

The button being visibly depressed on right click isn't part of the "normal" behavior of buttons. You may be able to fake it using JToggleButtons, or simply changing the button's background color and maybe border while the right mouse button is being held down.

If you are certain that the event is properly being triggered (debug FTW!) and that the button.setText("F") is happening, then perhaps you simply need to repaint.
Repaint the button.
http://java.sun.com/javase/6/docs/api/javax/swing/JComponent.html#repaint(java.awt.Rectangle)

This works for me fine on Mac:
import java.awt.event.*;
import javax.swing.*;
public class ButtonTest extends JFrame {
JButton button;
public ButtonTest() {
button = new JButton("W");
button.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
if (e.getButton() == 3) { // if right click
button.setText("F");
button.getModel().setPressed(false);
// button.setEnabled(true);
} else {
button.setText("X");
button.getModel().setPressed(true);
// button.setEnabled(false);
}
}
});
this.add(button);
this.setVisible(true);
}
public static void main(String[] args) {
new ButtonTest();
}
}
You might as well check for e.getButton() == 2 but I don't know when this one is triggered on Macs.