I'm trying to put a Java SystemTray icon on gnome's notification panel (I'm using OpenSuse 13.2, that uses gnome 3.14).
Its not working, although SystemTray.isSupported() is returning "true". I'm not seeing any icon on the screen. I was expecting it to appear next to OpenSuse's notification area.
This is the main's code:
public static void main(String[] args) {
//checking for support
if (!SystemTray.isSupported()) {
System.out.println("System tray is not supported !!! ");
return;
}
SystemTray systemTray = SystemTray.getSystemTray();
Image image = Toolkit.getDefaultToolkit().getImage("icon.ico");
//popupmenu
PopupMenu trayPopupMenu = new PopupMenu();
//1t menuitem for popupmenu
MenuItem action = new MenuItem("Action");
action.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(null, "Action Clicked");
}
});
trayPopupMenu.add(action);
//2nd menuitem of popupmenu
MenuItem close = new MenuItem("Close");
close.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
trayPopupMenu.add(close);
//setting tray icon
TrayIcon trayIcon = new TrayIcon(image, "SystemTray Demo", trayPopupMenu);
//adjust to default size as per system recommendation
trayIcon.setImageAutoSize(true);
try {
systemTray.add(trayIcon);
} catch (AWTException awtException) {
awtException.printStackTrace();
}
System.out.println("end of main");
}//end of main
This question is similar to this one. What I have is a JPopupMenu that pops up from an icon on the system tray. At this point, the system tray is the only manifestation of the program. That is, there are no other windows open, the icon in the system tray is the only way I can access the program. I used a JPopupMenu over the AWT PopupMenu because I wanted to get the system Look and Feel applied to the popup menu - when I used just a plain PopupMenu, I could not get the system's Look and Feel, I just kept getting Swing's Metal Look and Feel. I used this work-around to get this behavior (described here):
systemTrayPopupMenu = buildSystemTrayJPopupMenu();
trayIcon = new TrayIcon(iconImage, "Application Name", null /* Popup Menu */);
trayIcon.addMouseListener (new MouseAdapter () {
#Override
public void mouseReleased (MouseEvent me) {
if (me.isPopupTrigger()) {
systemTrayPopupMenu.setLocation(me.getX(), me.getY());
systemTrayPopupMenu.setInvoker(systemTrayPopupMenu);
systemTrayPopupMenu.setVisible(true);
}
}
};
When I right click on the tray icon, it shows the menu, and naturally, when I make a selection, the menu disappears. However, when I bring up the menu, then click out of it, it does not disappear. To make it disappear currently, I have to either make a selection, or select one of the menu items that are disabled.
I tried adding a FocusListener to it, however, there is no indication that the focusLost or focusGained methods ever get called. Additionally, I cannot make it disappear when another Window gains focus because there are no other windows present. Since this pop-up menu comes from a TrayIcon and not a typical button, I cannot use the solution mentioned here to get around the FocusListener not calling focusLost.
Ultimately, what I am wondering is either:
1) Is there a way to get the system's look and feel for a normal AWT PopupMenu?, or
2) Is there a way to make the JPopupMenu disappear when it loses focus?
EDIT: Per request, here is my SSCCE:
import java.awt.*;
import java.awt.event.*;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.*;
public class SwingSystemTray {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run () {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
new SwingSystemTray ();
} catch (Exception e) {
System.out.println("Not using the System UI defeats the purpose...");
e.printStackTrace();
}
}
});
}
protected SystemTray systemTray;
protected TrayIcon trayIcon;
protected JPopupMenu systemTrayPopupMenu;
protected Image iconImage;
public SwingSystemTray () throws IOException {
iconImage = getIcon ();
if (SystemTray.isSupported()) {
systemTray = SystemTray.getSystemTray();
systemTrayPopupMenu = buildSystemTrayJPopupMenu();
trayIcon = new TrayIcon(iconImage, "Application Name", null /* Popup Menu */);
trayIcon.addMouseListener (new MouseAdapter () {
#Override
public void mouseReleased (MouseEvent me) {
if (me.isPopupTrigger()) {
systemTrayPopupMenu.setLocation(me.getX(), me.getY());
systemTrayPopupMenu.setInvoker(systemTrayPopupMenu);
systemTrayPopupMenu.setVisible(true);
}
}
});
try {
systemTray.add(trayIcon);
} catch (AWTException e) {
System.out.println("Could not place item at tray. Exiting.");
}
}
}
protected JPopupMenu buildSystemTrayJPopupMenu () {
final JPopupMenu menu = new JPopupMenu ();
final JMenuItem showMenuItem = new JMenuItem("Show");
final JMenuItem hideMenuItem = new JMenuItem("Hide");
final JMenuItem exitMenuItem = new JMenuItem("Exit");
hideMenuItem.setEnabled(false);
ActionListener listener = new ActionListener () {
#Override
public void actionPerformed (ActionEvent ae) {
Object source = ae.getSource();
if (source == showMenuItem) {
System.out.println("Shown");
showMenuItem.setEnabled(false);
hideMenuItem.setEnabled(true);
}
else if (source == hideMenuItem) {
System.out.println("Hidden");
hideMenuItem.setEnabled(false);
showMenuItem.setEnabled(true);
}
else if (source == exitMenuItem) {
System.exit(0);
}
}
};
for (JMenuItem item : new JMenuItem [] {showMenuItem, hideMenuItem, exitMenuItem}) {
if (item == exitMenuItem) menu.addSeparator();
menu.add(item);
item.addActionListener(listener);
}
return menu;
}
protected Image getIcon () throws IOException {
// Build the 16x16 image programmatically, start with BMP Header
byte [] iconData = new byte[822];
System.arraycopy(new byte [] {0x42,0x4d,0x36,0x03, 0,0,0,0, 0,0,0x36,0,
0,0,0x28,0, 0,0,16,0, 0,0,16,0, 0,0,16,0, 24,0,0,0, 0,0,0,3},
0, iconData, 0, 36);
for (int i = 36; i < 822; iconData[i++] = 0);
for (int i = 56; i < 822; i += 3) iconData[i] = -1;
return ImageIO.read(new java.io.ByteArrayInputStream(iconData));
}
}
I found a hack that I feel will work just nicely. I have yet to test it in Windows XP, but it works in Windows 7. This involves adding a "hidden dialog" that displays behind the popup menu, as if the popup menu originated from the hidden dialog in the first place. The only real trick is getting the hidden dialog to stay behind the popup menu. At least in Windows 7, it displays behind the system tray, so you never really see it in the first place. A WindowFocusListener can be added to this hidden dialog, and so when you click out of the popup menu, you are also clicking out of the hidden dialog. I have added this capability to the SSCCE that I posted previously to illustrate how adding this works:
package org.test;
import java.awt.*;
import java.awt.event.*;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.*;
public class SwingSystemTray {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run () {
try {
/* We are going for the Windows Look and Feel here */
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
new SwingSystemTray ();
} catch (Exception e) {
System.out.println("Not using the System UI defeats the purpose...");
e.printStackTrace();
}
}
});
}
protected SystemTray systemTray;
protected TrayIcon trayIcon;
protected JPopupMenu systemTrayPopupMenu;
protected Image iconImage;
/* Added a "hidden dialog" */
protected JDialog hiddenDialog;
public SwingSystemTray () throws IOException {
iconImage = getIcon ();
if (SystemTray.isSupported()) {
systemTray = SystemTray.getSystemTray();
systemTrayPopupMenu = buildSystemTrayJPopupMenu();
trayIcon = new TrayIcon(iconImage, "Application Name", null /* Popup Menu */);
trayIcon.addMouseListener (new MouseAdapter () {
#Override
public void mouseReleased (MouseEvent me) {
if (me.isPopupTrigger()) {
systemTrayPopupMenu.setLocation(me.getX(), me.getY());
/* Place the hidden dialog at the same location */
hiddenDialog.setLocation(me.getX(), me.getY());
/* Now the popup menu's invoker is the hidden dialog */
systemTrayPopupMenu.setInvoker(hiddenDialog);
hiddenDialog.setVisible(true);
systemTrayPopupMenu.setVisible(true);
}
}
});
trayIcon.addActionListener(new ActionListener() {
#Override
public void actionPerformed (ActionEvent ae) {
System.out.println("actionPerformed");
}
});
try {
systemTray.add(trayIcon);
} catch (AWTException e) {
System.out.println("Could not place item at tray. Exiting.");
}
}
/* Initialize the hidden dialog as a headless, titleless dialog window */
hiddenDialog = new JDialog ();
hiddenDialog.setSize(10, 10);
/* Add the window focus listener to the hidden dialog */
hiddenDialog.addWindowFocusListener(new WindowFocusListener () {
#Override
public void windowLostFocus (WindowEvent we ) {
hiddenDialog.setVisible(false);
}
#Override
public void windowGainedFocus (WindowEvent we) {}
});
}
protected JPopupMenu buildSystemTrayJPopupMenu () {
final JPopupMenu menu = new JPopupMenu ();
final JMenuItem showMenuItem = new JMenuItem("Show");
final JMenuItem hideMenuItem = new JMenuItem("Hide");
final JMenuItem exitMenuItem = new JMenuItem("Exit");
hideMenuItem.setEnabled(false);
ActionListener listener = new ActionListener () {
#Override
public void actionPerformed (ActionEvent ae) {
/* We want to make sure the hidden dialog goes away after selection */
hiddenDialog.setVisible(false);
Object source = ae.getSource();
if (source == showMenuItem) {
System.out.println("Shown");
showMenuItem.setEnabled(false);
hideMenuItem.setEnabled(true);
}
else if (source == hideMenuItem) {
System.out.println("Hidden");
hideMenuItem.setEnabled(false);
showMenuItem.setEnabled(true);
}
else if (source == exitMenuItem) {
System.exit(0);
}
}
};
for (JMenuItem item : new JMenuItem [] {showMenuItem, hideMenuItem, exitMenuItem}) {
if (item == exitMenuItem) menu.addSeparator();
menu.add(item);
item.addActionListener(listener);
}
return menu;
}
protected Image getIcon () throws IOException {
// Build the 16x16 image programmatically, start with BMP Header
byte [] iconData = new byte[822];
System.arraycopy(new byte [] {0x42,0x4d,0x36,0x03, 0,0,0,0, 0,0,0x36,0,
0,0,0x28,0, 0,0,16,0, 0,0,16,0, 0,0,16,0, 24,0,0,0, 0,0,0,3},
0, iconData, 0, 36);
for (int i = 36; i < 822; iconData[i++] = 0);
for (int i = 56; i < 822; i += 3) iconData[i] = -1;
return ImageIO.read(new java.io.ByteArrayInputStream(iconData));
}
}
This solution gives me requirement #2 that I was looking for, which is to make the JPopupMenu disappear when it loses focus on a system tray using the Windows system look and feel.
Note: I have not gotten the JPopupMenu feature to work on the system tray in CentOS/RedHat Linux. For those, I will have to just use a normal AWT PopupMenu.
A JPopupMenu can't be displayed by itself. That is it needs to be added to a window. Try to use a WindowListener and then hide the popup on a windowDeactivated() event. After the popup is visible you should be able to get the window by using:
Window window = SwingUtilities.windowForComonent(systemTrayPopupMenu);
I just used a MouseListener on the JPopup menu which invokes a timer Thread upon mouse exit; if the mouse re-enters, I reset the "mouseStillOnMenu" flag. Set the "Thread.sleep() value to however long you want the user to be able leave the menu - if you click on a a menu item normally, the default menu close behavior is invoked and closes the menu.
#Override
public void mouseEntered(MouseEvent arg0) {
mouseStillOnMenu = true;
}
#Override
public void mouseExited(MouseEvent arg0) {
mouseStillOnMenu = false;
new Thread(new Runnable() {
#Override
public void run() {
try {
Thread.sleep(1000); //waits one second before checking if mouse is still on the menu
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (!isMouseStillOnMenu()) {
jpopup.setVisible(false);
}
}
}).start();
}
So I've stolen this cool PopupComposite, and I am really satisfied with it.
There's just one issue. If it put a org.eclipse.swt.widgets.Text in it, I open the popup, focus the Text, and press ESC, then both the Text and the PopupComposite dispose themselves.
I really can't figure out where the dispose call is coming from. Is it a Shell issue? What Shell should I use with the popup?
SSCCE:
/**
*
* #author ggrec
*
*/
public class PopupCompositeTester
{
public static void main(final String[] args)
{
new PopupCompositeTester();
}
private PopupCompositeTester()
{
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new GridLayout(1, false));
createContents(shell);
shell.pack();
shell.open();
while (!shell.isDisposed())
{
if ( !display.readAndDispatch() )
display.sleep();
}
display.dispose();
}
private static void createContents(final Composite parent)
{
final Button button = new Button(parent, SWT.PUSH);
button.setText("Poke Me");
final PopupComposite popup = new PopupComposite(parent.getShell());
new Text(popup, SWT.NONE);
popup.pack();
button.addSelectionListener(new SelectionAdapter()
{
#Override public void widgetSelected(final SelectionEvent e)
{
popup.show( Display.getDefault().map(parent, null, button.getLocation()) );
}
});
}
}
The reason for this is because when you focus the text field and press Escape, the field sends a SWT.TRAVERSE_ESCAPE event to its parent shell. The shell (in your case not being a top-level shell) responds by calling Shell.close(). You can work around that by adding a traverse listener to your text field, which would cancel the event (code below).
new Text(popup, SWT.NONE).addTraverseListener(new TraverseListener() {
#Override
public void keyTraversed(TraverseEvent e) {
if(e.detail == SWT.TRAVERSE_ESCAPE) {
e.doit = false;
}
}
});
Keep in mind, this is a rather crude solution to your specific issue. I would not recommend using this for anything other than testing purposes. You can read more about this here -> http://help.eclipse.org/indigo/index.jsp?topic=%2Forg.eclipse.platform.doc.isv%2Freference%2Fapi%2Forg%2Feclipse%2Fswt%2Fevents%2FTraverseEvent.html
And here: http://help.eclipse.org/helios/index.jsp?topic=%2Forg.eclipse.platform.doc.isv%2Freference%2Fapi%2Forg%2Feclipse%2Fswt%2Fwidgets%2FShell.html
Because my "bug" is actually a normal behaviour of the SWT platform, I've used the following workaround:
/**
* Lazy initialization of the popup composite
*/
private void createPopup()
{
// popupContainer is now a field
if (popupContainer != null && !popupContainer.isDisposed())
return;
// ... create popup AND its contents ...
}
and in the button listener:
createPopup();
popup.show( Display.getDefault().map(parent, null, button.getLocation()) );
Thank you #blgt
When I have a operation running in the back ground, I am setting my cursor to busy until the process completes. Is there a way to also grey out and disable the current Display/Dialog/Shell until the process completes. I want to visually let the user know that something is working and they have to wait.
EDIT
plotButton.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event arg0) {
getShell().setEnabled(!getShell().getEnabled());
getShell().setCursor(new Cursor(Display.getCurrent(), SWT.CURSOR_WAIT));
recursiveSetEnabled(getShell(), getShell().getEnabled());
startPrinterListOperation(); <== This is method that runs operation
}
});
Method that runs a printer operation.
private void startPrinterListOperation() {
listOp = new AplotPrinterListOperation(appReg.getString("aplot.message.GETPRINTERLIST"), session);
listOp.addOperationListener(new MyOperationListener(this) {
public void endOperationImpl() {
try {
printers.clear();
printers.addAll((ArrayList<PrinterProfile>) listOp.getPrinters());
Display.getDefault().asyncExec(new Runnable() {
public void run() {
showAplotPlotterDialog(); <== When operation returns - opens selection dialog
}
});
}
finally {
listOp.removeOperationListener(this);
listOp = null;
}
}
});
session.queueOperation(listOp);
} // end startPrinterListOperation()
showAplotPlotterDialog() (Seperate Class) opens a dialog with network printers, then with a button push sends a job to the selected printer. When that operation finishes the Plotter Dialog closes - This is the end of that method - baseDialog is the MAIN GUI
finally {
plotOp.removeOperationListener(this);
plotOp = null;
Display.getDefault().asyncExec(new Runnable() {
public void run() {
baseDialog.removeAllTableRows();
baseDialog.plotRequestCompleted = true;
baseDialog.setResultsButtonVisibility();
getShell().close();
}
});
}
The following should do what you want. It will recursively disable and grey out all the Controls in your Shell. The Shell itself does not have a setGrayed method, but this will work:
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
Button button = new Button(shell, SWT.PUSH);
button.setText("Button");
button.addListener(SWT.Selection, new Listener() {
#Override
public void handleEvent(Event arg0) {
shell.setEnabled(!shell.getEnabled());
shell.setCursor(new Cursor(display, SWT.CURSOR_WAIT));
recursiveSetEnabled(shell, shell.getEnabled());
}
});
new Text(shell, SWT.NONE).setText("TEXT");
shell.setSize(400, 400);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
private static void recursiveSetEnabled(Control control, boolean enabled) {
if (control instanceof Composite)
{
Composite comp = (Composite) control;
for (Control c : comp.getChildren())
recursiveSetEnabled(c, enabled);
}
else
{
control.setEnabled(enabled);
}
}
Use
BusyIndicator.showWhile(Display.getDefault(), new Runnable()
{
public void run()
{
//operation
}
});
It sets the busy cursor on all Shells (Window, Dialog, ...) for the current Display until the Runnable.run() is executed.
Baz's answer was a great start for me, but doesn't act on Combo since it extends Composite. By making the call to setEnabled unconditional, every Control (including Combo) are enabled/disabled correctly.
private static void recursiveSetEnabled(Control control, boolean enabled) {
if (control instanceof Composite)
{
Composite comp = (Composite) control;
for (Control c : comp.getChildren())
recursiveSetEnabled(c, enabled);
}
control.setEnabled(enabled);
}
Is it possible to listen to events from browser with Java?
The main task is to add command "copy to file" to pop-up menu of right click of the mouse. This command must add selected text in browser, in Notepad, in winword (any selectable text) to specific text file.
I've just tried code which adds icon to tray but I do not know whether it can it be developed for solving my task.
import java.awt.*;
import java.awt.event.*;
public class SystemTrayTest
{
public SystemTrayTest()
{
final TrayIcon trayIcon;
if (SystemTray.isSupported()) {
SystemTray tray = SystemTray.getSystemTray();
Image image = Toolkit.getDefaultToolkit().getImage("tray.gif");
MouseListener mouseListener = new MouseListener() {
public void mouseClicked(MouseEvent e) {
System.out.println("Tray Icon - Mouse clicked!");
}
public void mouseEntered(MouseEvent e) {
System.out.println("Tray Icon - Mouse entered!");
}
public void mouseExited(MouseEvent e) {
System.out.println("Tray Icon - Mouse exited!");
}
public void mousePressed(MouseEvent e) {
System.out.println("Tray Icon - Mouse pressed!");
}
public void mouseReleased(MouseEvent e) {
System.out.println("Tray Icon - Mouse released!");
}
};
ActionListener exitListener = new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.out.println("Exiting...");
System.exit(0);
}
};
PopupMenu popup = new PopupMenu();
MenuItem defaultItem = new MenuItem("Exit");
defaultItem.addActionListener(exitListener);
popup.add(defaultItem);
trayIcon = new TrayIcon(image, "Tray Demo", popup);
ActionListener actionListener = new ActionListener() {
public void actionPerformed(ActionEvent e) {
trayIcon.displayMessage("Action Event",
"An Action Event Has Been Peformed!",
TrayIcon.MessageType.INFO);
}
};
trayIcon.setImageAutoSize(true);
trayIcon.addActionListener(actionListener);
trayIcon.addMouseListener(mouseListener);
// Depending on which Mustang build you have, you may need to uncomment
// out the following code to check for an AWTException when you add
// an image to the system tray.
// try {
tray.add(trayIcon);
// } catch (AWTException e) {
// System.err.println("TrayIcon could not be added.");
// }
} else {
System.err.println("System tray is currently not supported.");
}
}
/**
* #param args the command line arguments
*/
public static void main(String[] args)
{
SystemTrayTest main = new SystemTrayTest();
}
}
You are talking about accessing clipboard events. this may helps you. How do we get notified about system clipboard events?