Help getting started

fxspark · April 29, 2010, 3:49pm

Hi all,

I am banging my head against the wall for the past few days trying to figure out why I can’t get my project to run.

This is just a simple “hello world” project that was included in smartgwt package.

I keep getting this error:

14:11:48.858 [ERROR] [example2] Unable to load module entry point class com.example.myproject.client.Example2 (see associated exception for details)
com.google.gwt.core.client.JavaScriptException: (TypeError): Cannot call method 'setAutoDraw' of undefined
 stack: TypeError: Cannot call method 'setAutoDraw' of undefined
    at unknown source
    at __gwt_jsInvoke (http://127.0.0.1:8888/example2/hosted.html?example2:70:35)
    at http://127.0.0.1:8888/example2/hosted.html?example2:263:16
    at z (http://127.0.0.1:8888/example2/example2.nocache.js:2:140)
    at http://127.0.0.1:8888/example2/example2.nocache.js:8:585
 type: non_object_property_call
 arguments: setAutoDraw,
 __gwt_ObjectId: 1
    at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:195)
    at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:120)
    at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:507)
    at com.google.gwt.dev.shell.ModuleSpace.invokeNativeVoid(ModuleSpace.java:284)
    at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeVoid(JavaScriptHost.java:107)
    at com.smartgwt.client.widgets.BaseWidget.init(BaseWidget.java)
    at com.smartgwt.client.widgets.BaseWidget.<clinit>(BaseWidget.java:46)
    at com.example.myproject.client.Example2.onModuleLoad(Example2.java:22)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.gwt.dev.shell.ModuleSpace.onLoad(ModuleSpace.java:369)
    at com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:185)
    at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:380)
    at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:222)
    at java.lang.Thread.run(Unknown Source)

Please help if you can, much appreciated.

Jason

fxspark · April 29, 2010, 4:00pm

More

OK, I thought I figured it out but NO! It’s bugging the hell out of me!

Please help, what is causing the error above? I tried everyhing, I tried reinstalling eclipse, GWT, SmartGWT etc. I made sure the libraries are added to build path, and followed simple instructions on http://forums.smartclient.com/showpost.php?p=21720&postcount=5

There doesn’t seem to be any problem with the code, here it is anyway:

package com.example.myproject.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.RootPanel;
import com.smartgwt.client.widgets.IButton;
import com.smartgwt.client.widgets.events.ClickHandler;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.util.SC;


public class Example2 implements EntryPoint {
	public void onModuleLoad() {
		
		IButton button = new IButton("Hello World");
		button.addClickHandler(new ClickHandler() {
							   public void onClick(ClickEvent event) {
							   SC.say("Hello World from SmartGWT");
							   }
							   });
		
		button.draw();
		
		RootPanel.get().add(button);
	}
}

This is the XML file:

<?xml version="1.0" encoding="UTF-8"?>
<module rename-to='example2'>
  <inherits name='com.google.gwt.user.User'/>

  <inherits name='com.google.gwt.user.theme.standard.Standard'/>
  <entry-point class='com.example.myproject.client.Example2'/>
  <inherits name="com.smartgwt.SmartGwt" />
  <source path='client'/>
  <source path='shared'/>

</module>

and the HTML file:

<!doctype html>
<html>
  <head>
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">

    <link type="text/css" rel="stylesheet" href="Example2.css">

    <title>Web Application Starter Project</title>
    
    <script> var isomorphicDir="example2/sc/"</script>
    <script type="text/javascript" language="javascript" src="example2/example2.nocache.js"></script>
    
  </head>

  <body>
  </body>
</html>

please please please help

fxspark · April 29, 2010, 7:16pm

Error image attached

This is the screenshot of the Development Mode tab

svjard · April 29, 2010, 7:29pm

Remove the RootPanel.get().add(button); line

mike.art1 · April 29, 2010, 7:31pm

Also remove <inherits name=‘com.google.gwt.user.theme.standard.Standard’/>

fxspark · April 29, 2010, 7:34pm

Thanks

Thanks for the reply - that was actually a typo, I removed the line and the error still shows up. In google chrome (even in IE 8) I get the a pop-up error (see attached image)

fxspark · April 29, 2010, 7:40pm

Ok, I removed this line too.. Still getting the error. I’m attaching a snip of my project explorer view to help you help me troubleshoot. Thanks guys! appreciate it.

svjard · April 29, 2010, 7:42pm

Its has to do with GWT not SmartGWT, have you tried loading your app with 9997 port? Have you tried -bindaddress flag with the compile? Have you tried deploying it instead of hosted mode? Finally have you tried a previous GWT version?

fxspark · April 29, 2010, 7:53pm

Yes, I’ve tried port 9997
Yes, I’ve tried the -bindaddress 0.0.0.0 argument

No, I haven’t tried deploying it. I’m pretty sure it’ll work in deployed mode. But how do I get around fixing this problem so I can start developing with smartgwt?

and No, I haven’t tried previous version of GWT. I have the latest version 2.0.3 and latest smartgwt 2.1

Edit: I forgot to mention that it doesn’t seem to be a GWT problem, since I can run the default example gwt application without any problems. It’s when I change it around and add smartgwt + relevant code that I get these errors.

svjard · April 29, 2010, 8:20pm

It is a GWT thing, but have you tried using localhost instead of the IP?

fxspark · April 29, 2010, 8:22pm

Yup, tried that as well…

aaaaaaaaaaaaaaaaaaah!!!

svjard · April 29, 2010, 8:31pm

Are you using the GWT plugin as the base? If so I would recommend simply NOT and start a new fresh project. Or even since you have the HelloWorld code just go to Eclipse->Import..->Existing Projects into Workspace.

fxspark · April 29, 2010, 8:39pm

Not sure what you mean by “using the GWT plugin as the base”. I started the project by going to File -> New-> Web Application Project

This is how the tutorial shows it. What other way should I do it?

Also, I couldn’t import the helloworld-2.0 project that was included with smartgwt-2.1, since it doesn’t have the eclipse project file. So I simply created a new project, and copied just the relevant code.