XPresentation2 returns a null XSlideShowController

[Dustin Breese]

I'm very new to the api, but have figured out how to get a slide show
to open and query a few things about it such as the number of pages,
etc.  However, when I obtain the XPresentation2 reference and query it
for the XSlideShowController, it is returning null.  How do I get a
reference to the XSlideShowController?

Here's my existing Java code (I'm sure it could be more compact, but I
haven't made it work yet, let alone clean it up!):

XComponentContext xContext = Bootstrap.bootstrap();

XMultiComponentFactory xMCF = xContext.getServiceManager();

Object desktop =
xMCF.createInstanceWithContext("com.sun.star.frame.Desktop",
xContext);

XComponentLoader xComponentLoader = (XComponentLoader)
UnoRuntime.queryInterface(XComponentLoader.class,desktop);

XComponent xDocument =
xComponentLoader.loadComponentFromURL("file:///Users/dbreese/Documents/test.odp",
"_default", 0, new PropertyValue[0]);

XPresentationSupplier supplier = (XPresentationSupplier)
UnoRuntime.queryInterface(XPresentationSupplier.class, xDocument);

XPresentation pres = supplier.getPresentation();
                       
XPresentation2 pres2 = (XPresentation2)
UnoRuntime.queryInterface(XPresentation2.class, pres);
// if I do "pres2.start();" or even "pres.start();", my slideshow does
go full screen and stars here

XSlideShowController slideController = pres2.getController();
System.err.println("slideController = " + slideController);

Always produces:
slideController = null

Thanks,
Dustin

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[Ariel Constenla-Haile]

Hello Dustin,

On Tuesday 13 October 2009, 16:13, Dustin Breese wrote:
> I'm very new to the api, but have figured out how to get a slide show
> to open and query a few things about it such as the number of pages,
> etc.  However, when I obtain the XPresentation2 reference and query it
> for the XSlideShowController, it is returning null.  How do I get a
> reference to the XSlideShowController?

you don't have a SlideShow controller if there is no slide show to control,
that is: start the slide show to get a controller, something like:


               XPresentationSupplier xPresentationSupplier =
                        (XPresentationSupplier) UnoRuntime.queryInterface(
                        XPresentationSupplier.class, xComponent);
               
                XPresentation xPresentation_ =
xPresentationSupplier.getPresentation();
                XPresentation2 xPresentation = (XPresentation2)
UnoRuntime.queryInterface(
                        XPresentation2.class, xPresentation_);
               
                PropertyValue[] aPresentationArgs = new PropertyValue[3];
               
                aPresentationArgs[0] = new PropertyValue();
                aPresentationArgs[0].Name = "IsAlwaysOnTop";
                aPresentationArgs[0].Value = Boolean.TRUE;
               
                aPresentationArgs[1] = new PropertyValue();
                aPresentationArgs[1].Name = "IsFullScreen";
                aPresentationArgs[1].Value = Boolean.FALSE;
               
                aPresentationArgs[2] = new PropertyValue();
                aPresentationArgs[2].Name = "IsAutomatic";
                aPresentationArgs[2].Value = Boolean.TRUE;
               
                xPresentation.startWithArguments(aPresentationArgs);

            // maybe put the thread to sleep a little...?
            if (xPresentation.isRunning()) {
                xSlideShowController = xPresentation.getController();

                if (xSlideShowController != null) {
                    xSlideShowController.addSlideShowListener(this);
                    m_bIsListening = true;
                }
            }



Regards
--
Ariel Constenla-Haile
La Plata, Argentina

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[Dustin Breese]

On Tue, Oct 13, 2009 at 1:45 PM, Ariel Constenla-Haile
<ariel.constenla.haile@...> wrote:

> Hello Dustin,
>
> On Tuesday 13 October 2009, 16:13, Dustin Breese wrote:
>> I'm very new to the api, but have figured out how to get a slide show
>> to open and query a few things about it such as the number of pages,
>> etc.  However, when I obtain the XPresentation2 reference and query it
>> for the XSlideShowController, it is returning null.  How do I get a
>> reference to the XSlideShowController?
>
> you don't have a SlideShow controller if there is no slide show to control,
> that is: start the slide show to get a controller, something like:
>
>
>               XPresentationSupplier xPresentationSupplier =
>                        (XPresentationSupplier) UnoRuntime.queryInterface(
>                        XPresentationSupplier.class, xComponent);
>
>                XPresentation xPresentation_ =
> xPresentationSupplier.getPresentation();
>                XPresentation2 xPresentation = (XPresentation2)
> UnoRuntime.queryInterface(
>                        XPresentation2.class, xPresentation_);
>
>                PropertyValue[] aPresentationArgs = new PropertyValue[3];
>
>                aPresentationArgs[0] = new PropertyValue();
>                aPresentationArgs[0].Name = "IsAlwaysOnTop";
>                aPresentationArgs[0].Value = Boolean.TRUE;
>
>                aPresentationArgs[1] = new PropertyValue();
>                aPresentationArgs[1].Name = "IsFullScreen";
>                aPresentationArgs[1].Value = Boolean.FALSE;
>
>                aPresentationArgs[2] = new PropertyValue();
>                aPresentationArgs[2].Name = "IsAutomatic";
>                aPresentationArgs[2].Value = Boolean.TRUE;
>
>                xPresentation.startWithArguments(aPresentationArgs);
>
>            // maybe put the thread to sleep a little...?
>            if (xPresentation.isRunning()) {
>                xSlideShowController = xPresentation.getController();
>
>                if (xSlideShowController != null) {
>                    xSlideShowController.addSlideShowListener(this);
>                    m_bIsListening = true;
>                }
>            }
>
>
>
> Regards
> --
> Ariel Constenla-Haile
> La Plata, Argentina
>
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> To unsubscribe, e-mail: dev-unsubscribe@...
> For additional commands, e-mail: dev-help@...
>
>

That was the missing link -- pausing after the "start()".  I'm now
able to control the slide show properly and get the reference to the
XSlideShowController.

Muchas Gracias!
Dustin

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