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Re: [Tm4j-tmnav-dev] tmnav extended to applet
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From: Christoph F. <cf...@fo...> - 2004-10-24 07:53:14
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Hi Rinalldo Am Sonntag, den 24.10.2004, 15:36 +1000 schrieb Rinalldo Yasahardja: > Sorry, a bit lenghty mail here... > a short one from me, on technical things only, since I'm a bit in a hurry. But thanks for your detailed descripton. > On Sat, 23 Oct 2004, Christoph Froehlich wrote: > > > Hi Rinalldo > > > > Am Sonntag, den 24.10.2004, 00:44 +1000 schrieb Rinalldo Yasahardja: > >> Hi, I sent msgs previously regarding extending tmnav so it works on > >> applet. It is now working until i clicked on the close button from the > >> window (the cross shaped button). The applet closes but also closes the > >> browser (which is NOT intended). > >> > > Congratulations. I would be very interested to hear how you have done > > it. And, maybe there is a chance to see it running in public? > > > > for what I did, in summary: > create an Applet class (called TMNavApplet in my case), then override > the init() function. That class should extends Applet. Inside the init() > function, you then do what you normally do in your main function, that is, > in case of TMNav, just move the content of main function inside the init() > function. As you know, TMNav can be run with several options such as -f > (which perform factory startup), etc. You then create a html page similar > like this: > > <html> > <applet code="org/tm4j/tmnav/app/TMNavApplet.class" archive="all.jar" > height=200 width=200 > alt="if this run, u see tmnav"> > <param name=option value="-f"> > > <!-- put the path to the server here (URL) > example: http://www.cse.unsw.edu.au/~ryas138/index.xtm --> > <param name=filename value="pattern_v1.xtm"> > Your browser is completely ignoring the <APPLET> tag! > </applet> > </html> > > you then call the getParameter function inside your TMNavApplet class to > access the value passed by parameter (in this case, > getParameter("option") would return "-f") > > the filename is for testing so TMNav can grab the file from the server. > you should also modify the logging.properties file path so that it is > grabbed from the server (rather than the client, like the current TMNav > behaviour), that way you remove all security issues that took me 2 weeks > to solve... =) Oh. Dont't you get exceptions from the applet? > I would love to let you see it works on public but I would have to ask > permission first. Currently, since this is only for internal use, I doubt > connection outside the working environment will be allowed. But I can > always send you the development so you can play around with your own > server. But I didnt do the integration with the server bit, so I wont have > a clue about it. Let me fix this issue first though... =) > > > As consequence to clicking the window closing button, TMNav calls > > System.exit(int). Maybe this is an overkill when running as an applet> > > I did searches and found that Applet does not normally allow > System.exit(int) to be called. But I am still confused about this and will > look into it this week. Do you implement window closing button with your > custom listener ? If you do, do you know in which file ? > - System.exit(int) is called in TMNav.closeInstance(int). The customListener for window clsing is implemented in the constructor of TMNavMainFrame. > > > > > >> Since my teammates are supposed to access TMNav when connected to the > >> server, closing the browser would then force them to re-open browser and > >> log in back to the server manually. > >> > >> Also, when starting TMNav, if I got msg saying "Node Removed" then TMNav > >> doesnt launch, anyone know what is going on ? > >> > > Is it exactly what TMNav says? I searched the source code, but can't > > find that string, neither in tmnav nor in panckoucke. > > > > Maybe it's not comming from TMNav but from third-party code, called by > > tmnav. One thing which comes to my mind is, that TMNav stores session > > data with the help of java.util.prefs-package (this package uses the > > notion of a node as well). I don't know how the implementations react, > > when called from an applets context. > > could be but I doubt it though. In my case, there are times when I close > TMNav applet but it doesnt crash the browser. However, when I tried to > invoke the applet again, it says Node Removed (may be it caught an > exception or something). However, I am a little bit suspicious with the > clearSessionData() in TMNav.java . In my case, I force TMNav to > always run > using "-f" parameter, which calls clearSessionData(). However, something > just prevent of running TMNav more than once. There is also a chance that > when the window close button is closed, the applet might not free the > resources used properly, but I dont know about it too... > > but my suspicion is in the line that says TMNavRootNode.removeNode() > in clearSessionData() since > the msg said Node Removed and TMNav failed to start. > If removeNode() did not fail, you should see a message beginning with "Removed Session data..." If it fails, you should see a stack trace. But you see neither, correct? Another question. Did you try to run TMNavApplet without the -f option? And: If you don't need the session to be stored, you can remove session.storeSession() from TMNav.closeInstance(). Just to see what happens. > In other words, users can now log in to the server, then run TMNav once, > and hope that when they close TMNav, it doesnt crash the browser... This is much more than last week :) bye c > > > > > > Do you have more hints? > > > > c > > > >> thanks heaps in advance > >> > >> > >> ------------------------------------------------------- > >> This SF.net email is sponsored by: IT Product Guide on ITManagersJournal > >> Use IT products in your business? Tell us what you think of them. Give us > >> Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more > >> http://productguide.itmanagersjournal.com/guidepromo.tmpl > >> _______________________________________________ > >> Tm4j-tmnav-dev mailing list > >> Tm4...@li... > >> https://lists.sourceforge.net/lists/listinfo/tm4j-tmnav-dev > > -- > > Christoph Froehlich <cf...@fo...> > > -- Christoph Froehlich <cf...@fo...> |
