Re: [api-dev] how to dispatch ".uno:ClosePreview" from java ?

[Andreas Schlüns]

Oliver Brinzing wrote:
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Hi,

at the moment I am trying to convert some of my basic macros into a java 
component :-)
but get stuck with the following problem:

dispatching ".uno:ClosePreview" from java seems not to work in all cases,
if I open a message box directly after the "xDispatch.executeDispatch" the 
message
box will be displayed in the preview mode ... after closing the message box, we 
are
still in the preview mode  ... the dispatch got lost ???

I think this i caused due to the async behaviour of the dispatching framwork ...

I also tried xNotifyingDispatcher.dispatchWithNotification() without success 
... :-(

In Basic I used the following:

Function ClosePreview()

        Dim oView as Object
        Dim oDispatcher as Object
        Dim mNoArgs()
        Dim i as Integer

        oView = ThisComponent.getCurrentController()

        If Not hasUnoInterfaces(oView, "com.sun.star.sheet.XSpreadsheetView") 
Then
                oDispatcher = 
createUnoService("com.sun.star.frame.DispatchHelper")
                oDispatcher.executeDispatch(ThisComponent.getCurrentController().Frame, 
".uno:ClosePreview", "",
0, mNoArgs())
                While Not hasUnoInterfaces(oView, 
"com.sun.star.sheet.XSpreadsheetView") and i < 10
                        Wait(0)
                        oView = ThisComponent.getCurrentController()
                        i = i + 1
                Wend
        EndIf

        MsgBox "Hello World..." & CStr(i)
End Function

Any hints ?



Using of the interface XNotifyingDispatch does not make the dispatch 
itself synchron ... it guarantees only, that the given listener will be 
called. Becausde normal XStatusListener used for a XDispatch call are 
not guaranteed to be used !

If you wish to force a synchronous execution of your dispatch you should 
try the argument "Asynchron" as [bool] with a valud "false".
But note: Forcing the synchron mode for an asnychronous operation can 
make trouble. E.g. closing of such preview will destroy resources, which 
are used by your own java code. In such case Disposed- or 
RuntimeExcception can occure, which of course must be handled by your 
code. You have to make sure that all references to these preview was 
released by yourself

/Hint: GarbageCollector .-)

Oliver
- --


Regards
Andreas

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