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true,
but what if it is not possible to do all operations in the
Runnable?
Do all your operations inside the runnable - finish off the
whole task inside the run method.
----- Original Message -----
Sent: Wednesday, June 11, 2003 1:17
PM
Subject: RE: suspend the awt
thread
But after the call:
new Thread(runnable).start();
I
need to wait for the new Thread to finish, because I want to get some object
from that runnable and it will only be available when the run() is
completed.
I
tried with:
while( thread.isAlive() )
{
Thread.sleep(300);
}
but this sleeps the awt thread, so no painting happens
anymore
Sorry, since the dialog is modal you need to show it in
the run of the runnable (again in the SwingUtilities and not in the
actionPerformed).
public void actionPerformed(ActionEvent ae)
{
Runnable runnable = new Runnable()
{
public void run()
{
startProgressDialog(); // remember to do this in the swing
thread
try {
// do some long operation and update progress dialog in
the Swing thread when appropriate
} finally {
closeProgressDialog(); // remember to do this in the
swing thread
}
}
new
Thread(runnable).start();
}
----- Original Message -----
Sent: Wednesday, June 11,
2003 12:33 PM
Subject: Re: suspend the
awt thread
Yes, create the dialog and start the progress bar in
the action peformed and then update it with calls to
SwingUtilities.invokeLater in your MyRunnable class. Make sure you close
the dialog in a finally block.
Hope this helps.
Regards
Sachin
----- Original Message -----
Sent: Wednesday, June
11, 2003 12:18 PM
Subject: RE: suspend the
awt thread
Yes, a) is what I want to do. Now the
progressbar is started in the MyRunnable() class. Are you saying that
I should start it within the actionPerformed()
method?
Sorry - sent it before completing my sentence - I
meant to say a) seems the best way . :-)
----- Original Message
-----
Sent: Wednesday,
June 11, 2003 12:14 PM
Subject: Re: suspend
the awt thread
Hey,
From what I understood what you wish to achieve
is that the UI should continue to repaint but the user should not
be able to interact with it while you complete your
task?
You can -
a) Show a modal dialog that says "Please Wait"
or shows a progress bar preferably with a cancel button - this
dialog disappears on the completion of your task. (I think this is
the
b) Disable all input event dispatching until
your operation concludes by replacing the EventQueue with your
own.
c) A harder way to achieve this is to have the
glass pane take focus, block mouse events and disable all
menus.
Does this help?
Regards
Sachin
----- Original Message
-----
Sent: Wednesday,
June 11, 2003 11:40 AM
Subject: suspend
the awt thread
Hi,
I want to suspend the awt thread but still get
painting done. Is this possible?
assume this piece of code:
actionPerformed(ActionEvent e)
{
Runnable myRunnable = new MyRunnable();
Thread workerThread = new Thread( myRunnable );
workerThread.start();
//
Wait here for workerThread to finish
//
but still paint!
Oject
o = myRunnable.getObject();
// do
something with o
}
You are in the actionPerformed, so this gets
executed on the awt thread. The workerThread starts with some
lengthy operation and we want to wait in the actionPerformed for
it to finish and then continue with our work. How do I do
it?
kind regards,
Wim
-------------
Ing. Wim
Deblauwe
Software Development
Engineer
Medical Imaging Systems -
BarcoView
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Unless indicated otherwise, the information contained in this message is privileged and confidential, and is intended only for the use of the addressee(s) named above and others who have been specifically authorized to receive it. If you are not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this message and/or attachments is strictly prohibited. The company accepts no liability for any damage caused by any virus transmitted by this email. Furthermore, the company does not warrant a proper and complete transmission of this information, nor does it accept liability for any delays. If you have received this message in error, please contact the sender and delete the message. Thank you.
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