Re: [Tm4j-tmnav-dev] running tmnav on applet

[Christoph F. <cf...@fo...>]

Hi Rinalldo

could you send me your implementation of TMnav.getFrame()?
Thanks
c


Am So, den 17.10.2004 schrieb Rinalldo Yasahardja um 11:40:
> Hi Christoph, thank you for your reply
> 
> This is also the first time for me to convert a stand alone application 
> into applet, so I am still working out the solution.
> 
> In my previous experience in using applet, basically all you have to do is 
> have a frame or anything that you want to display gets constructed 
> properly in the applet class. Then make the applet class "show" that 
> frame. Since tmNav has a frame called TMNavMainFrame in which every panels 
> and menus are included (based on my understanding of the source code), I 
> assume all I have to do is create a TMNavMainFrame class variable in the 
> applet class and constructs it exactly like the TMNavMainFrame is 
> constructed in the tmNav.
> 
> I assumed that all I had to do was to set the TMNavMainFrame in TMNav not 
> to show anything and show TMNavMainFrame which is inside the applet 
> class instead, however I kept getting NullPointerException.
> 
> Even after I put additional method in TMNav class called getFrame() which 
> returns TMNavMainFrame inside TMNav class, it still wouldnt work. So I 
> have the following:
> 
> class myApplet extends Applet{
>    TMNavMainFrame test = null;
>    TMNav application = null; // must have this
> 
>    //init must be overridden
>    void init(){
>      //basically contains what is inside of the main function in TMNav
>      //most important are:
>      // application.getInstance().makeInstance();
> 
>      // application.getInstance().show();
>      // if the show function is called, then TMNav runs on separate window
>      // since i want the frame to be displayed in the applet, it was turned
>      // off
> 
>      test = application.getInstance().getFrame();
>      test.show();
>    }
> }
> 
> with this way, the getFrame() method is somehow returning null and hence I 
> got the NullPointerException (it is supposed to return TMNavMainFrame 
> inside TMNav) and since I called it after everything was constructed 
> properly (that is, after the show() function is normally called in the 
> main function), that I have no idea why it is returning null.
> 
> any comments ?
> 
> On Sun, 17 Oct 2004, Christoph Froehlich wrote:
> 
> > Hi Rinalldo,
> >
> > I've never developed an applet  so I'm just guessing, but I think that
> > you are on the right track. TMNav creates on startup a JFrame that is
> > used as its base container.
> >
> > I just had a look at the code and I think it shouldn't be too difficult
> > to make TMnav use a given java.awt.Container to use at its base
> > container. If it turns out to be fruitful, I would do a refactoring, to
> > enable the use of TMNav as an applet.
> >
> > Nevertheless, some questions come to my mind:
> >
> > When developing an applet, are you creating the basic container by your
> > own, or is it provided by the enviroment (browser, appletviewer)?
> >
> > What is about Menubars in applets. Are they supported?
> >
> > TMnav sometimes opens new frames for some features. (TologQuery, several
> > dialogs). How do you deal with the concepts of opening dialogs in
> > applets. I think you are not allowed to open a window from an applet, or
> > are you?
> >
> >
> > Hmm. I'm not really decided, whether it is possible to refactor TMNav
> > without extravagant expenses. What do you think?
> >
> > bye
> > c
> >
> >
> > PS: If your sole target is to get xtm displayed as a graph in an applet,
> > you may have a look a Jens Kaschniks Hypergraph-Project (for kings &
> > queens: http://hypergraph.sourceforge.net/examples_tm_kaq.html)
> >
> >
> >
> > Am So, den 17.10.2004 schrieb Rinalldo Yasahardja um 9:20:
> >> Hi, I am planning to make tmnav running on applet so I can share work on
> >> the server, that is, so my teammates can directly look at xtm files on the
> >> server using tmnav. The catch is, now tmnav runs on separate window. So
> >> when I viewed the applet using apppletviewer, the applet window said
> >> "Applet loaded" but tmnav is on its own window (which makes sense since it
> >> was a stand alone application anyway). Hence there are 2 windows opened.
> >>
> >> However, when i tested it with html page, the applet did not show anything
> >> on the webpage. Is it possible because of the fact that tmnav runs on its
> >> own window and NOT on the applet window ?
> >>
> >> anyone know how to fix this ?
> >>
> >> thanks heaps in advance
> >>
> >>
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> > -- 
> > Christoph Froehlich <cf...@fo...>
> >
> 
> 
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Christoph Froehlich <cf...@fo...>