Re: [ jEdit-devel ] Bug in Beanshell?

[Matthieu C. <cho...@gm...>]

Right, I think the best way to handle this is to listen on the EditBus for
ViewUpdate.EDIT_PANE_CHANGED in the macro and
execute the code you want in the EBComponent like this


final EBComponent comp = new EBComponent()
{
    public void handleMessage(EBMessage message)
    {
        if (message instanceof ViewUpdate)
        {
            ViewUpdate vu = (ViewUpdate) message;
            if (vu.getWhat() != ViewUpdate.EDIT_PANE_CHANGED)
                return;
            EditBus.removeFromBus(comp);
            // Necessary because you must not block the EditBus with a modal
dialog
            SwingUtilities.invokeLater(new Runnable()
                           {
                           public void run()
                           {
                               View view = jEdit.getActiveView();
                               ta = view.getTextArea();
                               Macros.message(view,
((Buffer)ta.getBuffer()).getPath());
                           }
                           });
        }

    }
};
EditBus.addToBus(comp);
view.nextTextArea();

By the way I tested like this with an anonymous inner class

EditBus.addToBus(new EBComponent()
{
    public void handleMessage(EBMessage message)
    {
        if (message instanceof ViewUpdate)
        {
            ViewUpdate vu = (ViewUpdate) message;
            if (vu.getWhat() != ViewUpdate.EDIT_PANE_CHANGED)
                return;
            EditBus.removeFromBus(this);

            SwingUtilities.invokeLater(new Runnable()
                           {
                           public void run()
                           {
                               View view = jEdit.getActiveView();
                               ta = view.getTextArea();
                               Macros.message(view,
((Buffer)ta.getBuffer()).getPath());
                           }
                           });
        }

    }
});
view.nextTextArea();


But the line EditBus.removeFromBus(this); fails because "this" is not the
same instance of EBComponent that was added to the EditBus, I have no
explanation for this, I suppose it is a bug in beanshell

Matthieu




On Tue, Feb 10, 2009 at 10:07 PM, Shlomy Reinstein <sre...@gm...>wrote:

> This is not a bug, it's a threading thing. "view.nextTextArea()"
> shifts the focus to the next text area, but this executes
> asynchronously using "invokeLater". Before it actually executes, and
> makes the next text area current, the Macros.message command is
> executed, and still uses the current text area.
> Shlomy
>
> On Tue, Feb 10, 2009 at 10:43 PM, Robert Schwenn <Ro...@sc...>
> wrote:
> > Hi, I just stumbled into an issue I can't understand and suspect it to be
> a
> > bug possibly. The listed macro should do only two simple things, provided
> > the active view is split:
> >
> > 1. move the caret into the next textArea (=> this works well)
> > 2. should get the "current" textArea, where the caret now resides (=>
> this
> > does *not* work)
> >
> > Why does step 2 not work?
> >
> >
> > // Here is the macro:
> > view.nextTextArea();
> > ta = jEdit.getActiveView().getTextArea();
> > Macros.message(view, ta.getBuffer().getPath());
> >
> >
> >
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> and
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> >
> >
>
>
> ------------------------------------------------------------------------------
> Create and Deploy Rich Internet Apps outside the browser with
> Adobe(R)AIR(TM)
> software. With Adobe AIR, Ajax developers can use existing skills and code
> to
> build responsive, highly engaging applications that combine the power of
> local
> resources and data with the reach of the web. Download the Adobe AIR SDK
> and
> Ajax docs to start building applications today-
> http://p.sf.net/sfu/adobe-com
> --
> -----------------------------------------------
> jEdit Developers' List
> jEd...@li...
> https://lists.sourceforge.net/lists/listinfo/jedit-devel
>