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JFace Action and Thread -> QUID ? Why no GUI refresh ??? [message #463698]

Sat, 12 November 2005 21:14

jmi

Messages: 84
Registered: July 2009

Member

Hi,

I create an SWT application with JFace Action. I have a problem of thread synchronization i think.
When a process a search with the action defined here after (view code), the GUI is not refresh before the end of the Thread.

What can i do to solve this ?

Thanks

JMi

import org.eclipse.jface.action.Action;
...

public class MyAction extends Action {

...

/**
* @see org.eclipse.jface.action.IAction#run()
*/
public void run() {
BusyIndicator.showWhile(null, new Runnable() {
public void run() {
try {
runBusy();
} catch (final MyException argE) {
// TODO - faire traitement
// throw argE;
} catch (final Exception argE) {
// TODO - faire traitement
LOG.error(argE.getMessage(), argE);
// throw new MyException(argE);
}
}
});
}

protected void runBusy() throws MyException {
try {
<b>// MY PROBLEM : Reset all the fields -> set all the fields to "blank"
// Unfortunatelly, it is done after the thread finished...
// Do i have to call another thread ????</b>
viewer.refreshWithEmptyData();<b>// This is done after the thread finished ???????</b>

String cd = viewer.getCd(false);

if (bo == null) {
bo = new MyBO(dateFormat);
}

// Get data from the server
MyDataTO data = bo.findByCd(cd);

if (data != null) {
// Display the data
viewer.setData(data);
}
// set focus
viewer.setFocus();
} catch (final MyException argE) {
viewer.unsetData(false);
throw argE;
} catch (final Exception argE) {
LOG.error(argE.getMessage(), argE);
viewer.unsetData(false);
throw new MyException(argE);
}
}

...

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Re: JFace Action and Thread -> QUID ? Why no GUI refresh ??? [message #463701 is a reply to message #463698]

Sat, 12 November 2005 22:44

Messages: 20
Registered: July 2009

Junior Member

Hi Jmi,

jmi schrieb:
> Hi,
>
> I create an SWT application with JFace Action. I have a problem of thread synchronization i think.
> When a process a search with the action defined here after (view code), the GUI is not refresh before the end of the Thread.
>
> What can i do to solve this ?

I think you should use the "Job"-API

There is an article on eclipse.org wich describe how to use them.

http://www.eclipse.org/articles/Article-Concurrency/jobs-api .

marc

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