Re: [Jython-users] Threads

[Kevin M. <kev...@er...>]

Thanks, your example was very useful.

If I call MyThread().run() and I am not in the event-dispatching thread,
everything works fine. I can do long tasks and call invokeLater to update
the GUI with each result.

If I call MyThread().run() when a button is pressed, then
isEventDispatchThread() returns true and the updater function is called
directly. This is because button events are handled in the
event-dispatching thread, but the result is that the GUI is not updated
until the button event finishes :(

What I am doing wrong?


/Kevin



On Thu, 19 Jul 2001, D-Man wrote:

> On Thu, Jul 19, 2001 at 03:57:38PM +0200, Kevin McNamee wrote:
> |
> | I am trying to use threads so that I can revalidate some panes while
> | performing a series of long tasks, i.e.
> |
> | long task
> | update & revalidate pane
> | long task
> | update & revalidate pane
> | etc.
>
> Ok.  You have this loop in a thread (some subclass of
> java.lang.Thread).  When you want to update the GUI you update it via
> the SwingUtilities class.  Ex :
>
> class MyThread( java.lang.Thread ) :
>     def run( self ) :
>         for ... :
>             ...
>
>             # now update the GUI,  create an java.lang.Runnable that
>             # does the work
>             class updater( java.lang.Runnable ) :
>                 def run( self ) :
>                     <update the gui here>
>
>             if javax.swing.SwingUtilities.isEventDispatchThread() :
>                 # we are already in the AWT_EventQueue thread, it is
>                 # safe to touch the GUI
>                 updater().run()
>             else :
>                 # request that the updater be run in the
>                 # AWT_EventQueue thread
>                 javax.swing.SwingUtilities.invokeLater( updater() )
>
>
>
> HTH,
> -D
>
>
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>

_________________________________________________
Name/Title : Kevin McNamee, Software Consultant
Phone      : +46 13 32 1165
E-Mail     : kev...@er...