| Tray icon/menu [message #906349] |
Sat, 01 September 2012 07:41  |
 Wolfram Swoboda
Messages: 2
Registered: September 2012 |
Junior Member |
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Hello,
I have a problem concerning a tray icon with menu in an E4 RCP application. I want to 'minimize' my main window to the tray and show it again on a tray-icon click.
- How do i define a tray icon
I tried it with creating an invisible window in the Application.e4xmi, added a Part to it which contains the code for the tray item:
...
final Tray tray = display.getSystemTray();
TrayItem trayItem = new TrayItem(tray, SWT.NONE);
...
This works fine, the icon shows, BUT when i try to make the main window invisible it closes the whole application, which is logical because there is no more visible window left.
trayItem.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
mainWindow.setVisible(!mainWindow.isVisible());
}
);
Is there a way to prohibit the workbench from closing when the last window is set invisible?
Is there a better way/a best practice to create a tray icon/menu with E4?
Any ideas?
[Updated on: Sat, 01 September 2012 07:41] Report message to a moderator |
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| Re: Tray icon/menu [message #906475 is a reply to message #906349] |
Sat, 01 September 2012 15:51  |
Wolfram Swoboda
Messages: 2
Registered: September 2012 |
Junior Member |
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|
I found a solution but i'ts not pretty, more an evil hack, but it works. Better solutions are most welcome  .
The trick is to create the Tray in a new Display+Shell, in a new Thread and stall the UI Thread of the main Window:
private final ExecutorService trayRunner = Executors.newSingleThreadExecutor();
private Thread uiThread;
@PostConstruct
public void createControls(final MTrimmedWindow window, EModelService modelservice,MApplication application, Display display,IWorkbench workbench){
display.asyncExec(new Runnable() {
@Override
public void run() {
uiThread = Thread.currentThread();
}
});
createSystemTray(window,display);
}
private void createSystemTray(final MTrimmedWindow window,final Display uiDisplay){
trayRunner.execute(new Runnable() {
@Override
public void run() {
Display trayRunnerDisplay = new Display();
final Shell shell = new Shell(trayRunnerDisplay);
//shell.setVisible(false);
//shell.open();
Tray tray = trayRunnerDisplay.getSystemTray();
final TrayItem trayItem = new TrayItem(tray, SWT.NONE);
ImageDescriptor icon = null;
try {
icon = ImageDescriptor.createFromURL(new URL("platform:/plugin/at.swoboda.bakkup/icons/bakkup_icon.gif"));
} catch (MalformedURLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
trayItem.setImage(icon.createImage());
trayItem.setText("Bakkup");
trayItem.setToolTipText("Bakkup Trayitem");
System.out.println("Tray thread ="+Thread.currentThread().getId());
trayItem.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
if(window.isVisible()){
uiDisplay.asyncExec(new Runnable() {
@Override
public void run() {
window.setVisible(false);
try {
while(true){
uiThread.sleep(10000);
}
} catch (InterruptedException e) {
window.setVisible(true);
System.out.println("interrupted");
}
}
});
}else{
uiThread.interrupt();
}
}
});
while (!shell.isDisposed ()) {
if (!trayRunnerDisplay.readAndDispatch ()) trayRunnerDisplay.sleep ();
}
}
});
}
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