I have run into more problems. When I try to run osascript through
runtime.exec in a java program it appears to go into la-la land. I see
no activity, and it also appears that the interface is hung. I am able
to trace the plugins call to the browser, but when I use osascript it
appears to hang on the 1st call and all subsequent calls don't appear
in the trace, as if the plugin is hung and not processing any more
requests. Not the behavior using the open command or calling the
browser directly. There I can see trace records everytime I call the
plugin. The call statement looks OK in the trace. And I have no
problem with identical calls in the apple script editor or issuing the
commands in the terminal shell. Is there something different about the
way osascript is executed when called from within a program?
This sounds similar to a problem I just had. I had an About Dialog with
a clickable URL in it and was using Runtime.exec() to run
"/usr/bin/open" and open the URL in Safari.
That all worked, but then the java application hung when you switched
back to it.
Doing "kill -QUIT <pid>" on the java proc, I found the problem was in
the Application event queue. The AboutDialog had been triggered by by
an ApplicationEvent. As long as the modal About Dialog was being
displayed, the Application event queue was still locked.
When I switched back to the java App, i got a ReOpenApplication event,
which couldn't be processed until my About Dialog closed, but i
couldn't get back to that because the Application couldn't regain focus
until the ReOpenApplication event was processed. Deadlock!
The fix was simply to display the dialog from a call to
SwingUtilities.invokeLater() which returns immediately freeing up the
Application queue
I don't know anything about plugins, but you could have a similar
problem where the plugin is hanging when trying to regain focus after
switching back from the launched osascript.
This would explain why the first call works, but further ones don't.
--
Rohan Lloyd
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