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Java Forum / GUI / July 2005Copy/Paste in an applet under MacOS
Hi all, I wrote a text editing applet using a JTextArea or a JTextPane (depending on what the user wants to write) and until now, all worked fine (I work in Linux and Windows environment). But last day, I was asking why the copy/paste didn't work under MacOS. I first thought the Apple VM was the source of the error, but I was wrong since a customer lend me a PowerBook to find out what happened. The installed VM is the Sun one, version 1.4.2_08 (the same is installed under both Linux and Windows). So, do I miss something ? Is there a secret option to allow copy/paste under MacOS ? Or is it an OS bug ? Thank you for your (numerous, I hope) forthcoming answers. > I wrote a text editing applet .. URL? >..using a JTextArea or a JTextPane > (depending on what the user wants to write) and until now, all worked > fine (I work in Linux and Windows environment). But last day, I was > asking why the copy/paste Is it signed? >..didn't work under MacOS. SecurityExceptions?  SignatureAndrew Thompson physci.org 1point1c.org javasaver.com lensescapes.com athompson.info In Hypno-Vision > URL? I can't, it's on a customer's website and htaccess protected > Is it signed? As far as I know, I suppose it's not, since I didn't do anything for > SecurityExceptions? Actually, I didn't manage to open the Java console in Safari... :-( >>Is it signed? > > As far as I know, I suppose it's not, since I didn't do anything for To be clear, is this a java.awt.TextField/TextArea? Sun's implementation of these classes allow ^C, ^X, and ^V to operate, but prohibit their simulation from the applet. Apple may not support that feature. Perhaps you can do something with JavaScript. It's a pity applets do not support javax.jnlp. Tom Hawtin SignatureUnemployed English Java programmer To be clear, it is javax.swing.JTextArea/JTextPane I hope I won't have to use JavaScript, cause it's already a JS-bloated applet ;-) I finally found how to open the Java console, unfortunately, there isn't any exception throwed. The console is empty, free from any error informations (I should feel happy, instead I feel a bit disappointed) > I finally found how to open the Java console, unfortunately, there > isn't any exception throwed. Really? <http://www.physci.org/codes/javafaq.jsp#stacktrace> Where is your (short) code that shows how you are doing it? <http://www.physci.org/codes/sscce.jsp> Where's the URL? Oh ..wait. >> URL? > I can't, it's on a customer's website and htaccess protected Well, drag it out to a public site.. (read the SSCCE document carefully) SignatureAndrew Thompson physci.org 1point1c.org javasaver.com lensescapes.com athompson.info Beats A Hard Kick In The Face About stacktrace, you know, I already a die-hard fan of the e.printStackTrace() method, but there isn't really any exception throwed. Here is an usable URL : http://demo30.point52.com/admin/form_article.php?action=mod&id=4&id_gal=0&num_pa ge=1&od=0 login: demo password: demo > Here is an usable URL : > http://demo30.point52.com/admin/form_article.php?action=mod&id=4&id_gal=0&num_pa ge=1&od=0 > > login: demo > password: demo 'usable' is one word for it - but not one I would use. I want to validate your applet page before proceeding. After fighting through the login(?!?) and selecting a drop down from the list then clicking one of the buttons with text in French(?) I have yet to see any applet (or object) tags. If you want further help from me, put the effort in to prepare an SSCSE[1], and give us an URL for the *applet* (not some friggin' selector/nav page) where we (& the W3C validator) can *see* it. [1] <http://www.physci.org/codes/sscce.jsp> SignatureAndrew Thompson physci.org 1point1c.org javasaver.com lensescapes.com athompson.info Too Hot For Radio Here is a corrected, in english, URL : (login & password are the same than above) http://demo30.point52.com/admin/form_article.php?action=mod&id=5&id_gal=0&num_pa ge=1&od=0 Pass through the first page by clicking on the "Next" button, the applet is on the second page. I'm working and a SSCCE but don't expect it before tomorrow. Finally, here is the SSCCE (you can test it on http://www.point52.com/test/) : import java.awt.BorderLayout; import javax.swing.JApplet; import javax.swing.JScrollPane; import javax.swing.JTextPane; public class MyTextArea extends JApplet { private JScrollPane scp; private JTextPane txa; public void init() { getContentPane().setLayout(new BorderLayout()); txa = new JTextPane(); txa.setEditable(true); scp = new JScrollPane(); scp.setViewportView(txa); getContentPane().add(scp, BorderLayout.CENTER); } } Sorry, the ending } is missing > Finally, here is the SSCCE (you can test it on > http://www.point52.com/test/) : Now that's what I call an SSCCE.. Now, to get back to what Thomas mentioned.. "Sun's implementation of these classes allow ^C, ^X, and ^V to operate, but prohibit their simulation from the applet. Apple may not support that feature." I suspect that is it. Anybody got a Mac Java'd browser can check it? [ It copies just fine from both Sun Java'd Mozilla and IE on Windows, but that is hardly relevant. ] SignatureAndrew Thompson physci.org 1point1c.org javasaver.com lensescapes.com athompson.info LIVE From Omicron Persei 8 > > Finally, here is the SSCCE (you can test it on > > http://www.point52.com/test/) : [quoted text clipped - 13 lines] > [ It copies just fine from both Sun Java'd Mozilla > and IE on Windows, but that is hardly relevant. ] I've tried it in Safari 2.0 and in Firefox 1.0.6 under Mac OS X 10.4.2 with Java 1.4.2_08. It works just as I expected -- no cut/copy/paste actions are taken. I'm reasonably sure that interacting with the system clipboard in an unsigned applet isn't supposed to be possible. Just to be clear, Apple's Java should *not* behave differently from Sun's, overall. <http://www.apple.com/macosx/features/java/> tells about it (with marketing-oriented emphases, of course), but it's supposed to be as close to Sun's own implementation as possible, with some adjustments to suit the Mac OS X environment and the UI expectations of Mac users. = Steve = SignatureSteve W. Jackson Montgomery, Alabama > I've tried it in Safari 2.0 and in Firefox 1.0.6 under Mac OS X 10.4.2 > with Java 1.4.2_08. It works just as I expected -- no cut/copy/paste > actions are taken. Thanks Steve. I take it, from the OP's silence, that effectively answers the question. Signed applet and programmatic cut/paste might be the only way to go with Mac OS. ..Unles the OP wants to experiment with an AWT *TextArea*. Might that work? SignatureAndrew Thompson physci.org 1point1c.org javasaver.com lensescapes.com athompson.info You Can't Prove It Won't Happen > > I've tried it in Safari 2.0 and in Firefox 1.0.6 under Mac OS X 10.4.2 > > with Java 1.4.2_08. It works just as I expected -- no cut/copy/paste [quoted text clipped - 6 lines] > way to go with Mac OS. ..Unles the OP wants to experiment > with an AWT *TextArea*. Might that work? Wow...too long since I checked these groups... I've never done any AWT or applet work. But I may be a bit confused anyway. I thought I understood that the proper behavior of an applet that's not signed was to prohibit access to the *system* clipboard as a security measure. If so, then any automatic behavior of appropriate keyboard equivalents would be non-functional on Mac OS X and other platforms (i.e., Windows with Sun's implementation). But I didn't check the behavior of that applet on my work Windows XP system... In any case, Apple's states that its Java implementation meets Sun's requirements. If Sun calls for unsigned applets being restricted from system clipboard access, then (barring a bug) it should behave that way. = Steve = SignatureSteve W. Jackson Montgomery, Alabama Thank you for your numerous answers I haven't try to sign my applet but anyway I agree with you Steve about Apple statement. It should behave the same way. For the moment, if the copy/paste functionality doesn't work, the drag'n'drop does. Weird isn't it ? Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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