Re: [Jython-users] How to throw a java exception in Jython?

[Don C. <dco...@ch...>]

You can simply raise a Property Veto Exception in your Jython code.

     raise PropertyVetoException("Not allowed to detach toolbar", event)

On 4/29/07, ast...@gm... <ast...@gm...> wrote:
> Hello again..
>
> I have a floatable toolbar in my application. However, I just want the
> end-user to just move it from top, left, right, or bottom
> (BorderLayout.NORTH, etc equivalent) within the app. From what I
> understand, I have to add a propertyChangeListener and throw an
> exception to stop the toolbar from floating. I've never achieved this
> in Java and I'm attempting to do this in Jython. My code right now is
> as follows (with comments on the parts that I have problems with):
>
> import java.beans as beans
> class MyToolbarListener(beans.PropertyChangeListener):
>    def propertyChange(self, event):
>       if event.getNewValue() is None: return
>       tbar = event.getSource()
>       root = swing.SwingUtilities.getRoot(tbar)
>       if root is None: return
>       if root.getTitle() == 'Toolbar': # main JFrame has different title
>       # (Java) throw new PropertyVetoException("Not allowed to detach
> toolbar", event);
>       # (Jython) raise WhatException?
>
> Is there any other way of stopping a toolbar from being detached?
> Because when I think about it, if an error is raised, I don't know
> what to do next :-/
>
> Thanks for reading this confused email :-(
>
> astigmatik
>
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