Re: How to determine if popup panel is visible or shown?
There's an existing bug: http://code.google.com/p/google-web-toolkit/issues/detail?id=1665 On Mar 18, 9:12 am, rjcarr rjc...@gmail.com wrote: It seems as soon as I create a popup panel (PopupPanel) and call the isVisible() method it will return true, even before I add a widget to it and before I call show(). I can accept that it behaves differently from other widgets, but how then do I determine whether or not popup is visible (shown)? --~--~-~--~~~---~--~~ 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 google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: Help with the connection
Hi Jully, Follow this instructions if you still run into the same problems post the error messages! http://code.google.com/webtoolkit/gettingstarted.html On Jan 7, 9:37 am, Jully tina.hak...@gmail.com wrote: Hello, Ziyod. I am in the location of GWT, then /samples, then, whatever file I double click(mail-shell, showcase-shell, hello-shell), it's just the same, nothing is lauched but that error message. Thank you for your help = ) On 7 jan, 04:41, Ziyod ziyod2...@gmail.com wrote: Hi Jully, Can you be more specific on steps you took? Once you have installed GWT you should be able to go to /samples folder and pick any of the examples. For example, navigate to GWT_HOME/samples/Showcase (where GWT_HOME = location of gwt) folder and double click on Showcase-shell.cmd file that should launch a showcase sample in hosted mode. I hope that helps to get you started On Jan 6, 11:28 am, Jully tina.hak...@gmail.com wrote: Hi! I'm starting GWT today and it was just a problem to install it. I got it, but whenever I open a sample file it shows an error message that the requested URL could not be retrieved and it fails to connect to 127.0.0.1 I have no idea about the settings or how to fix this, then any help is worth ;) Thank you! --~--~-~--~~~---~--~~ 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 google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: Compiling a single Java class to a plain JavaScript file
Hi Rich, Reinier is right about the GWTCompiler. I thought you were trying to get human-readable javascript. I run this command in Windows(notice -style DETAILED argument): @java -Xmx256M -cp %~dp0\src;%~dp0\bin;%~dp0\../../gwt-user.jar; %~dp0\../../gwt-dev-windows.jar com.google.gwt.dev.GWTCompiler -out %~dp0\www -style DETAILED %* com.google.gwt.sample.hello.Hello On Jan 7, 12:20 am, Reinier Zwitserloot reini...@gmail.com wrote: rapodaca: The GWTCompiler is simply what drives the myProject-compile command; it does the same thing (translates a whole bunch of things into a single JS file), so I doubt its what you're looking for. What you want can't really be done. Java isn't javascript. Take your example just to illustrate the problem here: How would that even translate to javascript? Javascript doesn't have classes. It has prototype based inheritance. Here are your fundamental problems: 1. Javascript's namespacing and object model is so different, that GWT internally generates completely different and unwieldy names for objects and classes. These names are then mangled to unrecognizable shortcodes to reduce the size of the output JS. So, your public void hello method is either going to be called: com.mypackage.Hello::talk () (yes, including closing parentheses to indicate that this version takes no parameters; unlike javascript, in java two methods with the same name but different parameter lists are completely separate, in javascript you can't do that), or it's going to be called something small and effectively random, so something like 'xYq' or some such. There's no code to pick a sane name for interaction, so nothing there that would even think to generate just a function called hello. 2. There's a base set of functions that all GWT projects start out with. The GWT compiler assumes this basis is there. 3. GWT does something called platform targeting. That's why it generates a number of JS files - one for each target platform. Out of the box, there are already multiple platforms (1 for each major supported browser, so there's an Opera, an IE, a Gecko, and a Webkit). I'm not entirely sure but I believe the base, talked about in #2, is already written specifically for each target browser platform. If you are in the market to build such a tool, The GWT sources are a great place to start, but unless you're willing to dig in for a few weeks and do a lot of dev work, I don't think GWT can do what you want. NB: I'm not an expert on the GWT internals so I might have made a few mistakes, but I'm fairly sure the above is true. #1 is certainly true, and already a big deal for you. On Jan 7, 7:20 am, rapodaca rich.apod...@gmail.com wrote: On Jan 6, 5:58 pm, Ziyod ziyod2...@gmail.com wrote: Use GWTCompiler it's part of the com.google.gwt.dev.GWTCompiler package Create a gwtCompiler.cmd file and insert this command: @java -cp %~dp0\gwt-user.jar;%~dp0\gwt-dev-windows.jar com.google.gwt.dev.GWTCompiler %* Hello Ziyod, Thanks for the information. I'm on Linux, but my best guess for translation is (creating file GWT_INSTALL/gwtCompiler): java -cp $HOMEDIR/gwt-user.jar:$HOMEDIR/gwt-dev-linux.jar com.google.gwt.dev.GWTCompiler $@; This is based on the projectCreator script provided in the installation. I notice that HOMEDIR is not set so I go: $ export HOMEDIR=~/tmp/gwt-linux-1.5.3 Then I try: $ ./gwtCompiler com.example.Test Loading module 'com.example.Test' [ERROR] Unable to find 'com/example/Test.gwt.xml' on your classpath; could be a typo, or maybe you forgot to include a classpath entry for source? [ERROR] Build failed I'm not sure what happened or what the com/example/Test.gwt.xml file refers to. Any ideas of how to generate it and where to save it? Find out more:http://www.screaming-penguin.com/GWTDocs That's a good command summary, but unfortunately, I don't see any example usage. --~--~-~--~~~---~--~~ 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 google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
Re: Compiling a single Java class to a plain JavaScript file
Use GWTCompiler it's part of the com.google.gwt.dev.GWTCompiler
package
Create a gwtCompiler.cmd file and insert this command:
@java -cp %~dp0\gwt-user.jar;%~dp0\gwt-dev-windows.jar
com.google.gwt.dev.GWTCompiler %*
GWTCompiler [-logLevel level] [-gen dir] [-out dir] [-treeLogger] [-
style style] module
where
-logLevelThe level of logging detail: ERROR, WARN, INFO, TRACE,
DEBUG, SPAM, or ALL
-gen The directory into which generated files will be written
for review
-out The directory to write output files into (defaults to
current)
-treeLogger Logs output in a graphical tree view
-style Script output style: OBF[USCATED], PRETTY, or DETAILED
(defaults to OBF)
and
module Specifies the name of the module to compile
? OBF—Obfuscated mode. This is a non-human-readable, compressed
version suitable for production use.
? PRETTY—Pretty-printed JavaScript with meaningful names.
? DETAILED—Pretty-printed JavaScript with fully qualified names.
Find out more:
http://www.screaming-penguin.com/GWTDocs
On Jan 6, 1:13 pm, rapodaca rich.apod...@gmail.com wrote:
Greetings,
Is it possible to use GWT to convert a single Java class to a
JavaScript file that can be used within a browser? If so, how?
More specifically, if I have a file called Hello.java containing:
public class Hello
{
public String talk()
{
return hello;
}
}
how can I use GWT to convert it into a single file called hello.js
that could be used to instantiate a Hello object and call it's talk
method?
Almost all of the documentation on GWT I've been able to find deals
with creating a Web site. I'd like to do something much simpler - just
convert my Java class to a Javascript class-like structure that can
instantiate an object and invoke its methods.
This seems like something that should be trivial, but I've had no luck
finding out how to get it done.
Many thanks,
Rich
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Re: Help with the connection
Hi Jully, Can you be more specific on steps you took? Once you have installed GWT you should be able to go to /samples folder and pick any of the examples. For example, navigate to GWT_HOME/samples/Showcase (where GWT_HOME = location of gwt) folder and double click on Showcase-shell.cmd file that should launch a showcase sample in hosted mode. I hope that helps to get you started On Jan 6, 11:28 am, Jully tina.hak...@gmail.com wrote: Hi! I'm starting GWT today and it was just a problem to install it. I got it, but whenever I open a sample file it shows an error message that the requested URL could not be retrieved and it fails to connect to 127.0.0.1 I have no idea about the settings or how to fix this, then any help is worth ;) Thank you! --~--~-~--~~~---~--~~ 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 google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~--~~~~--~~--~--~---
