Re: [Rubycocoa-talk] Long processing?

[Neil S. <ne...@ha...>]

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Actually, now I'm having some trouble.  It was actually working for me
just fine when I was disabling an NSTextField, and changing the title of
an NSButton at the start of a thread, then enabling the field and
restoring the button title back at the end.

It started crashing on me when I tried adding an NSProgressIndicator to
spin during the processing, though.  So, I took your hint and looked up
what performSelector is, but it still crashes on me when I do this in my
WindowController:

def buttonClicked
	# Clear table data array

	Thread.new do
		self.performSelector('startupCheck')

		data loop do
			# Do stuff, and add to the table data array
			@table.noteNumberOfRowsChanged
		end

		self.performSelector('endCheck')
	end
end

def startupCheck
	@resultsSpinner.startAnimation_
	@textField.setEnabled(false)
	@button.setTitle('Cancel')
end

def endCheck
	@resultsSpinner.stopAnimation_
	@textField.setEnabled(true)
	@button.setTitle('Validate')
end

The app crashes for me on the stopAnimation_ call, but doesn't crash
when I omit that call.

So am I doing this wrong here?  I'm learning Cocoa as I go here, never
having used it before trying Ruby Cocoa.  What would be the right way to
call back to the main thread?

thanks,

P.S. I have the underscores added because I get a 'methodSignature is
null' exception if I make the call without the underscore.

- --
Neil Stevens - ne...@ha...

'A republic, if you can keep it.' -- Benjamin Franklin
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