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RAP-2.0 - UnsupportedOperationException in SimpleLifeCycle.sleep() Using JDialog.open(). [message #1058486]

Tue, 14 May 2013 11:02

Erwin Hogeweg

Messages: 37
Registered: July 2009

Member

Hi,

In converting an existing RAP 1.4 to 2, I ran into an issue JFace Dialog.open(). When I call open() on a JFace Dialog Extended class I get a continuous stream of exceptions from the runloop. (see snippet below).

The exception is thrown in the SimpleLifeCycle.sleep() method.

@Override
  public void sleep() {
    String msg = "Display#sleep() not supported in current operation mode.";
    throw new UnsupportedOperationException( msg );
  }

Obviously this lifecycle doesn't like to sleep. Do I need a different LifeCycle? If so, how/where do I get/set that?

I have checked the 1.5 and the 2.0 Migration instructions but didn't see anything in there (unless I missed it).

I have seen people suggest using swt.Dialog instead. Not sure that is the right approach.

Other than this issue the migration seems to be fairly painless, so: "good job to the RAP team".

java.lang.UnsupportedOperationException: Display#sleep() not supported in current operation mode.
at org.eclipse.rap.rwt.internal.lifecycle.SimpleLifeCycle.sleep(SimpleLifeCycle.java:75)
at org.eclipse.swt.widgets.Display.sleep(Display.java:1200)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:843)
at org.eclipse.jface.window.Window.open(Window.java:818)

Any Help is Highly appreciated.

Kind Regards,

Erwin

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Re: RAP-2.0 - UnsupportedOperationException in SimpleLifeCycle.sleep() Using JDialog.open(). [message #1058541 is a reply to message #1058486]

Tue, 14 May 2013 12:27

Ralf Sternberg

Messages: 1313
Registered: July 2009

Senior Member

Hi Erwin,

blocking dialogs are only supported in SWT compatibility mode [1],
supporting this API requires a dedicated UI thread on the server.
However, you can use JFace dialogs in the default mode if you set them
to non-blocking (call dialog.setBlockOnOpen(false)) and override the
methods okPressed, cancelPressed, etc. to react on the results.

HTH, Ralf

[1]
http://eclipse.org/rap/developers-guide/devguide.php?topic=application-setup.html&version=2.0

--
Ralf Sternberg

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