Re: Developer shell Crash
I Just updated my version of java and was able able to get a readable Static dump here it is # An unexpected error has been detected by Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x, pid=17118, tid=2892163984 # # Java VM: Java HotSpot(TM) Client VM (1.6.0_01-b06 mixed mode) # An error report file with more information is saved as hs_err_pid17118.log # # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp # terminate called after throwing an instance of 'std::out_of_range' what(): vector::_M_range_check /usr/lib/GWT: No such file or directory. Cannot access memory at address 0x59e7c8ee /opt/gwt/samples/Mail/17118: No such file or directory../Mail-shell: line 3: 17118 Killed java -cp $APPDIR/src:$APPDIR/ bin:$APPDIR/../../gwt-user.jar:$APPDIR/../../gwt-dev-linux.jar com.google.gwt.dev.GWTShell -out $APPDIR/www $@ com.google.gwt.sample.mail.Mail/Mail.html No stack. /usr/share/bug-buddy/gdb-cmd:3: Error in sourced command file: No registers. and the dump System: Linux 2.6.22.18-0.2-bigsmp #1 SMP 2008-06-09 13:53:20 +0200 i686 X Vendor: The X.Org Foundation X Vendor Release: 7020 Selinux: No Accessibility: Disabled GTK+ Theme: Gilouche Icon Theme: Industrial Memory status: size: 210640896 vsize: 210640896 resident: 15937536 share: 14041088 rss: 29978624 rss_rlim: 1014799360 CPU usage: start_time: 1220769267 rtime: 180 utime: 148 stime: 32 cutime:0 cstime: 0 timeout: 0 it_real_value: 0 frequency: 100 --- .xsession-errors (3258 sec old) - GCJ PLUGIN: thread 0x89c2c40: NP_GetMIMEDescription return GCJ PLUGIN: thread 0x89c2c40: NP_GetValue GCJ PLUGIN: thread 0x89c2c40: NP_GetValue: returning plugin name. GCJ PLUGIN: thread 0x89c2c40: NP_GetValue return GCJ PLUGIN: thread 0x89c2c40: NP_GetValue GCJ PLUGIN: thread 0x89c2c40: NP_GetValue: returning plugin description. GCJ PLUGIN: thread 0x89c2c40: NP_GetValue return gnome-session: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. Window manager warning: Fatal IO error 11 (Resource temporarily unavailable) on display ':0.0'. nm-applet: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. gnome-cups-icon: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. nautilus: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. gecko: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. gnome-panel: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. opensuse-updater-gnome-applet: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. -- On Sep 6, 1:00 am, jdmoncr [EMAIL PROTECTED] wrote: Hello I am new to GWT and I runing in to seem to be running problem where I try to excute the app-shell i get it cashes every time then the gnome reporting tool popups in my console this message popup as will ./StockWatcher-shell 157fc3f5-83f3-48b0-73276a9b-16cffee3 is dumped here is my specs of my environment i am runing OS-openSuse 10.3 Keneal- Linux exchage 2.6.22.18-0.2-bigsmp #1 SMP 2008-06-09 13:53:20 +0200 i686 athlon i386 GNU/Linux window manager-gnome desktop java -version-java version 1.5.0_12 Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_12-b04) Java HotSpot(TM) Client VM (build 1.5.0_12-b04, mixed mode) the dump seem to be in binary format as will so can not see the errors Has anyone seen this before --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: Developer shell Crash
I Just updated my version of java and was able able to get a readable Static dump here it is # An unexpected error has been detected by Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x, pid=17118, tid=2892163984 # # Java VM: Java HotSpot(TM) Client VM (1.6.0_01-b06 mixed mode) # An error report file with more information is saved as hs_err_pid17118.log # # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp # terminate called after throwing an instance of 'std::out_of_range' what(): vector::_M_range_check /usr/lib/GWT: No such file or directory. Cannot access memory at address 0x59e7c8ee /opt/gwt/samples/Mail/17118: No such file or directory../Mail-shell: line 3: 17118 Killed java -cp $APPDIR/src:$APPDIR/ bin:$APPDIR/../../gwt-user.jar:$APPDIR/../../gwt-dev-linux.jar com.google.gwt.dev.GWTShell -out $APPDIR/www $@ com.google.gwt.sample.mail.Mail/Mail.html No stack. /usr/share/bug-buddy/gdb-cmd:3: Error in sourced command file: No registers. and the dump System: Linux 2.6.22.18-0.2-bigsmp #1 SMP 2008-06-09 13:53:20 +0200 i686 X Vendor: The X.Org Foundation X Vendor Release: 7020 Selinux: No Accessibility: Disabled GTK+ Theme: Gilouche Icon Theme: Industrial Memory status: size: 210640896 vsize: 210640896 resident: 15937536 share: 14041088 rss: 29978624 rss_rlim: 1014799360 CPU usage: start_time: 1220769267 rtime: 180 utime: 148 stime: 32 cutime:0 cstime: 0 timeout: 0 it_real_value: 0 frequency: 100 --- .xsession-errors (3258 sec old) - GCJ PLUGIN: thread 0x89c2c40: NP_GetMIMEDescription return GCJ PLUGIN: thread 0x89c2c40: NP_GetValue GCJ PLUGIN: thread 0x89c2c40: NP_GetValue: returning plugin name. GCJ PLUGIN: thread 0x89c2c40: NP_GetValue return GCJ PLUGIN: thread 0x89c2c40: NP_GetValue GCJ PLUGIN: thread 0x89c2c40: NP_GetValue: returning plugin description. GCJ PLUGIN: thread 0x89c2c40: NP_GetValue return gnome-session: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. Window manager warning: Fatal IO error 11 (Resource temporarily unavailable) on display ':0.0'. nm-applet: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. gnome-cups-icon: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. nautilus: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. gecko: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. gnome-panel: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. opensuse-updater-gnome-applet: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. -- On Sep 6, 1:00 am, jdmoncr [EMAIL PROTECTED] wrote: Hello I am new to GWT and I runing in to seem to be running problem where I try to excute the app-shell i get it cashes every time then the gnome reporting tool popups in my console this message popup as will ./StockWatcher-shell 157fc3f5-83f3-48b0-73276a9b-16cffee3 is dumped here is my specs of my environment i am runing OS-openSuse 10.3 Keneal- Linux exchage 2.6.22.18-0.2-bigsmp #1 SMP 2008-06-09 13:53:20 +0200 i686 athlon i386 GNU/Linux window manager-gnome desktop java -version-java version 1.5.0_12 Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_12-b04) Java HotSpot(TM) Client VM (build 1.5.0_12-b04, mixed mode) the dump seem to be in binary format as will so can not see the errors Has anyone seen this before --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: Developer shell Crash
Here is the java error ouput # # An unexpected error has been detected by Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x, pid=18675, tid=3084528528 # # Java VM: Java HotSpot(TM) Client VM (1.6.0_01-b06 mixed mode) # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp # --- T H R E A D --- Current thread (0x08057c00): JavaThread main [_thread_in_Java, id=18686] siginfo: [error occurred during error reporting, step 90, id 0xb] Stack: [0xb7d52000,0xb7da3000), sp=0xb7da0d20, free space=315k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) V [libjvm.so+0x3ae327] V [libjvm.so+0x3aef34] C [+0x440] __kernel_rt_sigreturn+0x0 V [libjvm.so+0x3add75] V [libjvm.so+0x3ae327] V [libjvm.so+0x3079c0] V [libjvm.so+0x305278] C [+0x420] __kernel_sigreturn+0x0 j org.apache.xerces.dom.DeferredDocumentImpl.createNode(S)I+20 j org.apache.xerces.dom.DeferredDocumentImpl.createDeferredDocument()I +3 j org.apache.xerces.parsers.AbstractDOMParser.startDocument(Lorg/ apache/xerces/xni/XMLLocator;Ljava/lang/String;Lorg/apache/xerces/xni/ Augmentations;)V+231 j org.apache.xerces.impl.XMLNamespaceBinder.startDocument(Lorg/apache/ xerces/xni/XMLLocator;Ljava/lang/String;Lorg/apache/xerces/xni/ Augmentations;)V+21 j org.apache.xerces.impl.dtd.XMLDTDValidator.startDocument(Lorg/ apache/xerces/xni/XMLLocator;Ljava/lang/String;Lorg/apache/xerces/xni/ Augmentations;)V+71 j org.apache.xerces.impl.XMLDocumentScannerImpl.startEntity(Ljava/ lang/String;Lorg/apache/xerces/xni/XMLResourceIdentifier;Ljava/lang/ String;)V+58 j org.apache.xerces.impl.XMLEntityManager.startEntity(Ljava/lang/ String;Lorg/apache/xerces/xni/parser/XMLInputSource;ZZ)V+394 j org.apache.xerces.impl.XMLEntityManager.startDocumentEntity(Lorg/ apache/xerces/xni/parser/XMLInputSource;)V+15 j org.apache.xerces.impl.XMLDocumentScannerImpl.setInputSource(Lorg/ apache/xerces/xni/parser/XMLInputSource;)V+13 j org.apache.xerces.parsers.DTDConfiguration.parse(Z)Z+19 j org.apache.xerces.parsers.DTDConfiguration.parse(Lorg/apache/xerces/ xni/parser/XMLInputSource;)V+29 j org.apache.xerces.parsers.XMLParser.parse(Lorg/apache/xerces/xni/ parser/XMLInputSource;)V+9 j org.apache.xerces.parsers.DOMParser.parse(Lorg/xml/sax/ InputSource;)V+43 j org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Lorg/xml/sax/ InputSource;)Lorg/w3c/dom/Document;+55 j javax.xml.parsers.DocumentBuilder.parse(Ljava/io/InputStream;)Lorg/ w3c/dom/Document;+25 j org.apache.commons.modeler.util.DomUtil.readXml(Ljava/io/ InputStream;)Lorg/w3c/dom/Document;+39 j org.apache.commons.modeler.modules.MbeansDescriptorsDOMSource.execute()V +27 j org.apache.commons.modeler.modules.MbeansDescriptorsDOMSource.loadDescriptors(Lorg/ apache/commons/modeler/Registry;Ljava/lang/String;Ljava/lang/ String;Ljava/lang/Object;)Ljava/util/List;+22 j org.apache.commons.modeler.Registry.load(Ljava/lang/String;Ljava/ lang/Object;Ljava/lang/String;)Ljava/util/List;+221 j org.apache.commons.modeler.Registry.loadDescriptors(Ljava/lang/ String;Ljava/lang/Object;Ljava/lang/String;)V+4 j org.apache.commons.modeler.Registry.loadDescriptors(Ljava/lang/ String;Ljava/lang/ClassLoader;)V+183 j org.apache.commons.modeler.Registry.findDescriptor(Ljava/lang/ Class;Ljava/lang/String;)V+95 j org.apache.commons.modeler.Registry.findManagedBean(Ljava/lang/ Object;Ljava/lang/Class;Ljava/lang/String;)Lorg/apache/commons/modeler/ ManagedBean;+60 j org.apache.commons.modeler.Registry.findManagedBean(Ljava/lang/ Class;Ljava/lang/String;)Lorg/apache/commons/modeler/ManagedBean;+4 j org.apache.commons.modeler.Registry.registerComponent(Ljava/lang/ Object;Ljavax/management/ObjectName;Ljava/lang/String;)V+90 j org.apache.catalina.core.StandardEngine.init()V+117 j org.apache.catalina.core.StandardEngine.start()V+16 j org.apache.catalina.startup.Embedded.start()V+104 j com.google.gwt.dev.shell.tomcat.EmbeddedTomcatServer.init(Lcom/ google/gwt/core/ext/TreeLogger;ILjava/io/File;)V+390 j com.google.gwt.dev.shell.tomcat.EmbeddedTomcatServer.start(Lcom/ google/gwt/core/ext/TreeLogger;ILjava/io/File;)Ljava/lang/String;+23 j com.google.gwt.dev.GWTShell.startUp()Z+55 j com.google.gwt.dev.GWTShell.run()V+4 j com.google.gwt.dev.GWTShell.main([Ljava/lang/String;)V+20 v ~StubRoutines::call_stub V [libjvm.so+0x209a4d] V [libjvm.so+0x305bc8] V [libjvm.so+0x2098e0] V [libjvm.so+0x232d06] V [libjvm.so+0x2243ab] C [java+0x1b98] JavaMain+0x2c8 C [libpthread.so.0+0x5192] --- P R O C E S S --- Java Threads: ( = current thread ) 0x0833c000 JavaThread Keep-Alive-Timer daemon [_thread_blocked, id=18746] 0x08420400 JavaThread Timer-0 daemon [_thread_blocked, id=18739] 0x08421000 JavaThread Thread-0 daemon [_thread_in_Java, id=18736] 0x080be400 JavaThread Low Memory Detector daemon [_thread_blocked, id=18706] 0x080bcc00 JavaThread CompilerThread0 daemon [_thread_blocked,
Re: Google Chrome GWT
I experienced the same issue and already opened an issue in both gwt and chrome bugtracker. In my app it's absolutely random if StackPanel works on Chrome. If I change some of the content, it suddenly works and vice versa. No idea, I guess it's a timing/event problem. On 5 Sep., 04:34, El Cucurucho [EMAIL PROTECTED] wrote: Ian, I managed to replicate the problem I'm having with StackPanel in chrome onhttp://examples.roughian.com It's difficult to provide exact steps to replicate the problem, as I managed to encounter the problem by trying many different things. However, I was unable to replicate it by following exact steps that had previously led to the problem. But to give you a rough idea, you should be able to see what's happening by first going to the StackPanel, selecting 'Two', then spend some time playing with other panels, widgets and listeners. After doing that for some time, return to the StackPanel, and you may find that it will not switch between subpanels. It will probably take a few attempts to break it, but there is definitely a problem there. I'd like it if a few other people could check it out, and maybe help find the cause so that I can submit it to the Chrome developers. Cheers, Luke On Sep 3, 10:07 am, Ian Bambury [EMAIL PROTECTED] wrote: If it happens in Safari as well, then it's probably a general WebKit problem (Chrome (i.e.Chromium) and Safari are all WebKit-based). If it's a problem in Chrome and not in Safari then it's probably a V8 problem (the JS engine).. If it happens only in Chrome and it's not a CSS problem (try it out in a HelloWorld program) then if you post it here, I'll see if I can reproduce it. If it's just in Chrome, then you can report it, but GWT doesn't support Chrome :-) Ian 2008/9/3 Mehdi Rabah [EMAIL PROTECTED] I have some problems, Accordion panel and ListBox are not working (I don't know if it's because it's inside a maps InfoWindow) I'm not sure If I should open an issue, other experiencing problems ? On Wed, Sep 3, 2008 at 12:27 AM, Brian [EMAIL PROTECTED] wrote: The Google Chrome browser is out, and I'm running through my GWT app with it -- it's fast! No problems yet, looks great. -- Ian http://examples.roughian.com Internet communications are not secure and therefore I do not accept legal responsibility for the contents of this message. Any views or opinions do not necessarily represent what I really think unless otherwise specifically stated and even then, I might still be lying. This message may contain confidential privileged information, but if it does, I've nicked it from someone else. If you have received this email in error then tough, hit delete, and don't bother me about it, I really don't care. Batteries not included. Contents may go up as well as down. Shares may vary in size. May cause drowsiness, if affected, go to bed. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: GWT + comet?
As you said, comet is a complex problem on the server side. On the client it's relatively straightforward. Some issues: 1) You either need an async webserver (such as something based on the fairly new java Simple, or the continuation support available in jetty), or you need an OS + VM combo which can handle tons of threads without a high overhead (the latest linux + the latest java 6 seems capable of this). Be especially careful if you've got a frontloader (such as Apache) that merely redirects to your actual java stuff. Apache, out of the box, will probably not use the new worked thread mechanism to communicate with the java server at the backend, and by default apache will start serving up 'busy' pages if more than 50 simultaneous connections are already running. You get to 50 very quickly when using comet. If this is your setup, google around for how to implement apache+comet+java properly. Personally I just run jetty only, no apache. 2) The only safe way to do comet is to make a request from the client to the server, then the server returns NOTHING, not a single byte, it just waits, and then, once data is available, it sends it, and then closes the connection. In response, the client should open another connection and this whole song and dance number is repeated. The reason you can't just keep sending data across a single HTTP connection, is because the HTTP standard has no concept of 'flush'. A proxy or even the webclient itself (IE and Safari both do some limited caching, for example) will simply assume more will come very shortly, and never forward the data to the endpoint (your GWT app). In order to do this concept right, you need some sort of tracking number. For example, imagine an IRC (chat) client using comet. You could simply assign to each chat line in the chat room an index number, and upon first connect, tell the client the last chat line index number spoken. From here on out, comet can be done by letting the client request http://www.mychatserver.com/chats/line?idx=; + lastReceivedChatLineIdx++ - the server, upon receiving such a request, first checks if a line with that idx has already been said. If so, it is returned immediately (no comet). if NOT, it will not return an error, it will instead just wait and hold the connection open. Your servlet should register a listener of some sort with the central repository of chat messages, so it can wake up when the line with the given idx is actually spoken. You can't just ask for 'the next line' without a tracker ID of some sort, because in between receiving one line, processing it on the client, and opening another connection, a line might have been spoken. Without tracking you'd miss this line. 3) Because proxies, webservers, and web clients all have HTTP timeouts, and they are all different, you should manually close the connection after ~50 seconds. In our chat example, you'd send back something like: [NO CHAT] to indicate to the client that in the entire 50 second span, the chat line with idx '1234' never came up so far. In response, the client should re-open the connection with the exact same request (gimme line 1234). 4) For efficiency you may want to let the server respond with all relevant messages that have a tracker ID equal to or larger than the requested item. For example, in our chat app, if a client asks for message #1234, but on the server you already know that we're on message 1237 (a burst of rapid chats just recently happened, for example), then you should just send 1234, 1235, 1236, and 1237 in one go. You'll need a way to delimit each 'packet' of information in the response in this case. You could use JSON, for example. Or use a GWT- RPC call, though I don't know the specifics of making that work right with comet. 5) Web clients internally have a 2 connections limit. This means that, for any given full server name, if there are already 2 open connections, and a third thing is requested from this server, the client will queue up this request instead of sending it. Once one of those 2 open connections is closed, it will send it. This is perfectly reasonable when all requests are handled as fast as possible, but in comet, the whole point is that requests are NOT handled as fast as possible. If you have multiple comet elements on a single web page (Let's say, a 'live' stock ticker AND a chat box, each running a separate comet connection), then you're out of connections, and the act of requesting a simple image in response to a mouse over or some such never goes through! There are two solutions to this: A) run your non-AJAX calls off a different server. For example, serve up images from img.yourhost.com instead of just yourhost.com. You can't do this for your comet connections, because those usually use AJAX calls, and those must go to the same domain as the web page (Same Origin Policy, wikipedia that if you don't know what that is). This won't help you if you have 3 separate comety things going on, and it won't help
Announce: MathEclipse GWT module 0.0.6 released
Hello I've just released this refactored MathEclipse parser package as a GWT 1.5 module: http://sourceforge.net/project/showfiles.php?group_id=67067package_id=206641release_id=624702 The MathEclipse parser package could be used to evaluate math expressions in double and complex numeric mode. From the Changelog: * refactored the parser package names to be directly usable as a GWT module. * all classes below the package org.matheclipse.parser.client are now compilable from Java to JavaScript by the GWT compiler. * in your *.gwt.xml module you have to insert the line: inherits name=org.matheclipse.parser.Parser/ and to add the meparser-0.0.6.jar on your classpath to use it with GWT. For more information about the GWT module mechanism see: http://code.google.com/webtoolkit/documentation/com.google.gwt.doc.De... * Example for using the double evaluator: DoubleEvaluator engine = new DoubleEvaluator(); double d = engine.evaluate(str); * Example for using the complex number evaluator: ComplexEvaluator engine = new ComplexEvaluator(); Complex c = engine.evaluate(str); String complexStr = ComplexEvaluator.toString(c); * for more examples please see the JUnit tests in the Eclipse project: org.matheclipse.parser.test http://matheclipse.cvs.sourceforge.net/matheclipse/org.matheclipse.parser.test/src/org/matheclipse/parser/test/ Your feedback for improving MathEclipse is appreciated. See the forum at: http://groups.google.de/group/matheclipse -- Axel Kramer http://www.matheclipse.org WikiBlog: http://www.groovy-news.org/e/page/axelclk --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
How to create a busy/loading icon?
Good Day To All, How can I create a busy/loading icon while my flextable is being rendered? By the way, my flextable is consist of comboboxes that contain a large amount of data so while the page is being rendered, there is a slight delay of displaying the contents of the flextable. Thanks, Karl Chan --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: Announce: MathEclipse GWT module 0.0.6 released
great, keep up the good work! Rakesh Wagh --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: accessing parentpanel method from dialogbox
thanks in the parentpanel, i create method getinstance(), so i can access the method from dialogbox On Sep 6, 7:19 pm, gregor [EMAIL PROTECTED] wrote: Hi YoeZ, DialogBox implements SourcesPopupEvents, therefore if you have your parent panel implement the PopupListener interface and register iteself as a listener with the DialogBox, it will be notified via void onPopupClosed(PopupPanel sender, boolean autoClosed) when the DialogBox closes, and can access what it needs from the sender (which is the DialogBox). regards gregor On Sep 6, 6:59 am, YoeZ [EMAIL PROTECTED] wrote: dear all, how can i access parentpanel method from DialogboxPanel? i want to send variable from dialogbox to parent panel. thanks before --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: GWT + comet?
Thanks for the excellent response, that was very helpful. Everything makes sense, I was taking a look at Jetty and it seems easy to use for what I want to do. I had been writing my own java nio server for a class I was taking, it's cool to see how Jetty has taken advantage of the nio stuff to support 'comet'. From a game development point of view, this is great because we can wait for the server to send us data instead of constantly polling it. One thing that still seems to be missing is fast graphics support, to actually render dynamic game data. I was working with the gwt canvas intensively a few months ago, but was disappointed to find out that IE's support for it was just horrible. Firefox and Safari (and probably Chrome now) can do a decent job of rendering simple primitives fast in a canvas. In fact, my iPhone could render primitives faster than IE! I wonder if there is any development on this (providing a fast canvas for direct pixel manipulation) by the browsers. Right now it seems like the only way to do it is by using Flash. Anyway thanks again for all those answers, definitely got me in the right direction, Mark On Sep 7, 6:30 am, Reinier Zwitserloot [EMAIL PROTECTED] wrote: As you said, comet is a complex problem on the server side. On the client it's relatively straightforward. Some issues: 1) You either need an async webserver (such as something based on the fairly new java Simple, or the continuation support available in jetty), or you need an OS + VM combo which can handle tons of threads without a high overhead (the latest linux + the latest java 6 seems capable of this). Be especially careful if you've got a frontloader (such as Apache) that merely redirects to your actual java stuff. Apache, out of the box, will probably not use the new worked thread mechanism to communicate with the java server at the backend, and by default apache will start serving up 'busy' pages if more than 50 simultaneous connections are already running. You get to 50 very quickly when using comet. If this is your setup, google around for how to implement apache+comet+java properly. Personally I just run jetty only, no apache. 2) The only safe way to do comet is to make a request from the client to the server, then the server returns NOTHING, not a single byte, it just waits, and then, once data is available, it sends it, and then closes the connection. In response, the client should open another connection and this whole song and dance number is repeated. The reason you can't just keep sending data across a single HTTP connection, is because the HTTP standard has no concept of 'flush'. A proxy or even the webclient itself (IE and Safari both do some limited caching, for example) will simply assume more will come very shortly, and never forward the data to the endpoint (your GWT app). In order to do this concept right, you need some sort of tracking number. For example, imagine an IRC (chat) client using comet. You could simply assign to each chat line in the chat room an index number, and upon first connect, tell the client the last chat line index number spoken. From here on out, comet can be done by letting the client requesthttp://www.mychatserver.com/chats/line?idx=; + lastReceivedChatLineIdx++ - the server, upon receiving such a request, first checks if a line with that idx has already been said. If so, it is returned immediately (no comet). if NOT, it will not return an error, it will instead just wait and hold the connection open. Your servlet should register a listener of some sort with the central repository of chat messages, so it can wake up when the line with the given idx is actually spoken. You can't just ask for 'the next line' without a tracker ID of some sort, because in between receiving one line, processing it on the client, and opening another connection, a line might have been spoken. Without tracking you'd miss this line. 3) Because proxies, webservers, and web clients all have HTTP timeouts, and they are all different, you should manually close the connection after ~50 seconds. In our chat example, you'd send back something like: [NO CHAT] to indicate to the client that in the entire 50 second span, the chat line with idx '1234' never came up so far. In response, the client should re-open the connection with the exact same request (gimme line 1234). 4) For efficiency you may want to let the server respond with all relevant messages that have a tracker ID equal to or larger than the requested item. For example, in our chat app, if a client asks for message #1234, but on the server you already know that we're on message 1237 (a burst of rapid chats just recently happened, for example), then you should just send 1234, 1235, 1236, and 1237 in one go. You'll need a way to delimit each 'packet' of information in the response in this case. You could use JSON, for example. Or use a GWT- RPC call, though I don't know the
Re: How to make DialogBox modal both in terms of code execution and events?
Thanks for the explanation. Makes sense.
Easier to understand for RPC, a bit harder to get for UI events.
On Sep 1, 8:56 am, Jason Morris [EMAIL PROTECTED] wrote:
This is the way it's done.
You can think of JavaScript as running on the event-dispatch-thread.
Therefore, opening a DialogBox and making the thread wait until a button is
clicked results in the following on the queue:
++ +-+
| wait for click | - | click event |
++ +-+
the wait for click will wait for ever since it never lets the thread move onto
the click event task and process the actual event.
This is a simplification, but in essence the way it works. I wrote about this
problem in terms of GWT RPC... but the principal is the same:
http://lemnik.wordpress.com/2008/07/04/gwt-rpc-is-called-aynchronous-...
Hope that explains things a bit.
lama wrote:
I have the same question.
I've had to workaround this by adding callbacks to transfer the data
from the dialog back to the caller.
Regards,
lama
On Aug 29, 9:16 am, gwt-user [EMAIL PROTECTED] wrote:
1. To illustrate the first point. In the following code:
boolean ok = Window.confirm(Are you sure .);
if (ok) {
}
code inside the if block will be executed only after user presses
button on the confirm dialog. Is it possible to do the same with
instance of DialogBox?
2. The following code
DialogBox dialog = new DialogBox(true, true);
dialog.show();
does not ignore keyboard and mouse events for widgets not contained by
the dialog
Thank you,
Boris
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Re: GWT + comet?
Glad you liked the missive. I've saved a bookmark for future reference in case someone else comes in and asks (Comet usually comes up once a month or so). For game development: Just screw IE. There's no way to do halfway decent graphics on IE, period. Go flash, or tell people to switch to firefox/opera/safari/comet. All 3 non-IE browsers are trying to speed up javascript. Opera 9.5 has a fairly spiffy javascript engine already, and both firefox and webkit are on the verge of shipping custom very smart and very fast VMs for javascript (tracemonkey for firefox, and squirrelfish for safari). Then there's V8, which you can see at work today in Google Chrome. It looks like V8, Tracemonkey, and squirrelfish will all be roughly as fast as one another (can you say meep meep?) - should do wonders for attempts to write games in canvas. Which brings us back to IE. F!*k IE. There's future hope though: I believe apple has rescinded copyright/patent claims on canvas, or they ran out, so in theory nothing is stopping IE from implementing them now - though as I understand it, Microsoft never expressed interest in supporting them. Microsoft is part of the W3C and evidently they have not been able to use their considerable weight there to stop the latest news at W3C. W3C's own home-grown XHTML 2.0 effort has effectively been mothballed indefinitely, and instead HTML5 has been adopted (HTML5 started as something from the WHAT-WG, which is a much less officious entity compared to W3C, and consists of the developers of Opera, WebKit (Safari), and Gecko (Firefox/mozilla). - e.g. the anti-IE league, and the main reason stuff like canvas has seeded so quickly to the other non-IE browsers) HTML5 has been dollied up with some lip service to XHTML but make no mistake: Few really expected the W3C to 'fold' to the clearly superior HTML5 work in progress. HTML5 includes Canvas (see http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas.html for proof). The question now becomes: Does Microsoft break even more from the W3C than they already have (remember, IE isn't exactly standards compliant). So far betas of IE8 indicate that Microsoft is seriously attempting to build a more compatible browser, so there's hope. Then again, armchair analysts (like myself ㋛) believe that Microsoft is still trying to prevent the web from becoming the host of virtually every computer app out there, in order to keep their own OS (Windows) in a safe market leader position. Microsoft's stranglehold on the web community by way of IE is one of the things holding web apps back, so there are plenty of pessimists who believe that the final version of IE8 will be a big disappointment. On Sep 7, 9:41 pm, markww [EMAIL PROTECTED] wrote: Thanks for the excellent response, that was very helpful. Everything makes sense, I was taking a look at Jetty and it seems easy to use for what I want to do. I had been writing my own java nio server for a class I was taking, it's cool to see how Jetty has taken advantage of the nio stuff to support 'comet'. From a game development point of view, this is great because we can wait for the server to send us data instead of constantly polling it. One thing that still seems to be missing is fast graphics support, to actually render dynamic game data. I was working with the gwt canvas intensively a few months ago, but was disappointed to find out that IE's support for it was just horrible. Firefox and Safari (and probably Chrome now) can do a decent job of rendering simple primitives fast in a canvas. In fact, my iPhone could render primitives faster than IE! I wonder if there is any development on this (providing a fast canvas for direct pixel manipulation) by the browsers. Right now it seems like the only way to do it is by using Flash. Anyway thanks again for all those answers, definitely got me in the right direction, Mark On Sep 7, 6:30 am, Reinier Zwitserloot [EMAIL PROTECTED] wrote: As you said, comet is a complex problem on the server side. On the client it's relatively straightforward. Some issues: 1) You either need an async webserver (such as something based on the fairly new java Simple, or the continuation support available in jetty), or you need an OS + VM combo which can handle tons of threads without a high overhead (the latest linux + the latest java 6 seems capable of this). Be especially careful if you've got a frontloader (such as Apache) that merely redirects to your actual java stuff. Apache, out of the box, will probably not use the new worked thread mechanism to communicate with the java server at the backend, and by default apache will start serving up 'busy' pages if more than 50 simultaneous connections are already running. You get to 50 very quickly when using comet. If this is your setup, google around for how to implement apache+comet+java properly. Personally I just run jetty only, no apache. 2) The only safe way to do
Re: Imagedata isn't reloaded
Append a unique ID as query string of the image URL, i.e. the time the
file was last modified as integer.
/upload/images/12345.jpg?1220824911
On Sep 7, 11:34 pm, Paul van Hoven [EMAIL PROTECTED]
wrote:
I have a simple Widget where the user can set its user picture. It has
a fileupload and shows the user image. So when the user wants to
change his user picture, he simply clicks on the fileupload chooses
picture and this is then send to the server. On the server side the
picture is safed as userId.jpg where userId is a unique integer
associated with each user. So everytime the user updates his foto, his
file named userId.jpg is simply overwritten, keeps its name and
after the fileupload succeeded on the client side in the public void
onSubmitComplete(FormSubmitCompleteEvent event) method I make an RPC
call to the server to retrieve the new image data, such that the user
can see his newly changed picture. But there is a problem.
The image in the widget is constructed by
setupWidget() {
Image userPicture = new Image( GWT.getHostPageBaseURL() +
umi.userPic.thumbPath );
userPicture.setPixelSize( umi.userPic.width, umi.userPic.height );
...
}
So after having gotten the new image data from the server the method
setupWidget() is called andthe new picture gets the same path as the
old one was, since the userId.jpg hasn't changed name but content.
The problem: The new image is not reloaded, i.e. the same image as the
old one is shown. But the size of the picture changes. So now I have
the old picture but poorly scaled. I've already tried not to create a
new image but to call setURL() on the old userpicture. But it
doesn't work either.
Why is the image not reloaded properly?
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Re: How to make DialogBox modal both in terms of code execution and events?
Iama, under what conditions do you need to use callbacks? Can you give an
example?
Also, to gwt-user: you may get mouse-down/mouse-up events (which is wrong,
but just changes the appearance of a button, or sets focus) but I don't
think you can do anything with them (like enter text, or click). Either way,
consider a blinder (glass panel, whatever you want to call it) to block the
page off (faded or not faded).
Ian
2008/9/1 lama [EMAIL PROTECTED]
I have the same question.
I've had to workaround this by adding callbacks to transfer the data
from the dialog back to the caller.
Regards,
lama
On Aug 29, 9:16 am, gwt-user [EMAIL PROTECTED] wrote:
1. To illustrate the first point. In the following code:
boolean ok = Window.confirm(Are you sure .);
if (ok) {
}
code inside the if block will be executed only after user presses
button on the confirm dialog. Is it possible to do the same with
instance of DialogBox?
2. The following code
DialogBox dialog = new DialogBox(true, true);
dialog.show();
does not ignore keyboard and mouse events for widgets not contained by
the dialog
Thank you,
Boris
--
Ian
http://examples.roughian.com
2B or not 2B,
that is FF
=
Internet communications are not secure and therefore I will not accept legal
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else. If you have received this email in error then tough, hit delete, and
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Re: MVC, GWT and Model Annotations
I'd file a bug with the GWT Designer people then It works perfectly fine when you do UI creation by hand. On Sep 4, 7:43 pm, Alline [EMAIL PROTECTED] wrote: I am importing the Hibernate libraries to my classpath already. The problem is that I am trying to use the GWT Designer and this application doesn't let me import any external library inside my client package. :( On Sep 4, 2:24 pm, Folke [EMAIL PROTECTED] wrote: If you want to keep yourannotationson your entity classes and your entity classes inside client packages you have to includeHibernatein your classpath. The GWT compiler needs to know about them. You can either strip theannotationsand map your entities with an hbm.xml or you make an annotation-less copy of each entity class and use them as data transfer object (DTOs). May I ask why it is a problem to includeHibernatein your classpath when compiling your GWT app? Theseannotationsdo not appear in the JavaScript. On Sep 4, 10:06 pm, Alline [EMAIL PROTECTED] wrote: Hi, I am using GWT and I had to put my Model package inside the GWT client package. The problem is that I am usingHibernateAnnotationsto persist my data, and theannotationsstays inside the Model Classes. So, I am forced to importHibernatelibraries inside to my client package. I didn't like that... Do you have a suggestion for a way that I can work together with hibernateannotations, MVC and GWT ?- Hide quoted text - - Show quoted text - --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: Difference Between GWT componant and GWTEXT
It depends if you're talking about ExtGWT or Gwt-ext. Nevertheless, I usually recommend to avoid both of them. You're better off in the long run using your own widgets or ones in the incubator. Gwt-ext amounts to a bunch of JSNI calls to the ExtJS library. Its performance is atrocious and it has far too many quirks (event handling is way different, hard to integrate with GWT widgets, etc). The widgets in that library are nowhere near the level of quality that you get from the regular GWT ones. The ExtGWT library is licensed under GPL v3.0, so it can't be used in commercial apps. I haven't tried it so I won't comment. However, from what I've heard, you're better off using the standard GWT widgets and maybe some stuff from the incubator (although some if it is really quirky). Regards, Arthur Kalmenson On Sep 4, 1:17 am, Jigar [EMAIL PROTECTED] wrote: hi, can any one explain me what is the different between com.google.gwt.user.client.ui and com.gwtext.client.widgets controls... moreover i want to know that is GWTExt can not be used for the commercial purpose, but can we use GWT component for commercial purpose? Thanx in advance --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
is communication over GWT-RPC secure
Hi All, i am a new to Security, i am using GWT-RPC for login, i read the GWT LoginFAQ, and see that they are recommending using GWT-RPC for login, but my concern is, how secure is GWT-RPC over the wire, if some one is sniffing, is the data protected over the wire ?. Can you please let me know how would you approach login if you were using GWT-RPC. thanks for the help Hari --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
MySQL RPC Example
Thought I would post my MySQL example. http://gawkat.com/MySQLConn/ - GWT MySQL demo getting data http://code.google.com/p/gwt-examples/wiki/project_MySQLConn - MySQL code snippets Download the Eclipse project via the SVN. I made an example widget in which a widget grabs MySQL data from the server and display it to screen. I use an object array to transport the data from the server to the client and often back to the server. Check out the demo and code snippets for more information on how I do it. I show the object array at the bottom of my gwt-examples. Hope the MySQL RPC example helps, have fun dissecting it. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
