Announcement

**Isomorphic** · 6 May 2013, 11:01

Hi Fatzopilot
What you're doing here:
- getting the DynamicForm,
- using "getItem" to get the item,
- and using "getIcon" to get the icon in Java scope,
- then adding the handler to it,
should all work as far as we can tell. We've attempted to replicate your results, and found with similar Java code in a simple standalone test, clicking on the icon does indeed show the prompt.

There may be some subtle difference between your usage and our test case that accounts for this. To determine what this might be, could you put together a standalone test case for us that we can run as written on our end, and show us the source for each part?

In other words:
- a bootstrap file which simply loads your component XML and the application.
- Simplify the component XML down to just this Form definition (and show the complete set of XML to us, whether its embedded in the bootstrap or loaded as a separate file)
- an entry point class which does only the steps described here (attempts to add the click handler to the icon) and if necessary draws the form.

This should give us everything we need to see exactly the behavior you're getting.

Thanks
Isomorphic Software

**fatzopilot** · 6 May 2013, 14:14

Hi,

I'm sorry, it don't know what was different the first time but it works now in production/compiled mode...
However, I still get the Exception in dev mode (so it does not work there) and the handler count stays 0.

Here is the code:
Portal.ui.xml

Code:

<isomorphicXML xmlns:fmt="WEB-INF/">
	<DynamicForm ID="ViewsForm">
		<fields>
		    <SelectItem ID="ViewsFormSelectItem" width="240">
		        <title><fmt:message key='tabBar_Views' /></title>
		        <name>ViewsFormSelectItem2</name>
	    		<icons>
	    		    <PickerIcon ID="EditViewButton" width="16" height="16">
					    <src>[SKIN]/actions/edit.png</src>
					    <name>EditViewButton2</name>
					</PickerIcon>
				 </icons>
			</SelectItem>
		</fields>
	</DynamicForm>

	<TabSet ID="PortalTabSet" autoDraw="true" width="100%" height="100%" tabBarAlign="left">
		<tabs>
			<Tab title="Tab0" canClose="true">
				<ID>Tab0</ID>
				<name>Tab0</name>
			</Tab>
		</tabs>
		<tabBarControls>
			<value>tabScroller</value>
			<value>tabPicker</value>
			<value>ViewsForm</value>
		</tabBarControls>
	</TabSet>
	<DataView ID="PortalDataView" width="100%" height="100%"
		overflow="hidden" autoDraw="true">
		<members>
			<Canvas ref="PortalTabSet" />
		</members>
		<modulesDir>modules/</modulesDir>
	</DataView>
</isomorphicXML>

Code:

package com.aCompany.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.GWT.UncaughtExceptionHandler;
import com.google.gwt.event.shared.GwtEvent.Type;
import com.smartgwt.client.rpc.LoadScreenCallback;
import com.smartgwt.client.rpc.RPCManager;
import com.smartgwt.client.util.SC;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.form.DynamicForm;
import com.smartgwt.client.widgets.form.fields.FormItem;
import com.smartgwt.client.widgets.form.fields.FormItemIcon;
import com.smartgwt.client.widgets.form.fields.events.FormItemClickHandler;
import com.smartgwt.client.widgets.form.fields.events.FormItemIconClickEvent;

/**
 * Entry point classes define <code>onModuleLoad()</code>.
 */
public class GWTModule implements EntryPoint {
    /**
     * This is the entry point method.
     */
	@Override
	public void onModuleLoad() {
		
		GWT.setUncaughtExceptionHandler(new UncaughtExceptionHandler() {
			
			@Override
			public void onUncaughtException(Throwable e) {
				GWT.log("Uncaught exception",e);
			}
		});
		
		String[] globalIds = new String[]{
				"ViewsForm"
				};
		
		RPCManager.loadScreen("Portal", new LoadScreenCallback() {
			
			@Override
			public void execute() {
				final DynamicForm dynamicForm = (DynamicForm) Canvas.getById("ViewsForm");
				final FormItem formItemField = dynamicForm.getField("ViewsFormSelectItem2");
				FormItemIcon editIcon = formItemField.getIcon("EditViewButton2");
				editIcon.addFormItemClickHandler(new FormItemClickHandler() {	
					@Override
					public void onFormItemClick(FormItemIconClickEvent event) {
						SC.say(formItemField+" button clicked.");
					}
				});
				SC.say("editIcon.getHandlerCount(new Type<FormItemClickHandler>());"+ editIcon.getHandlerCount(new Type<FormItemClickHandler>()));
			}
		}, globalIds);
	}
}

Regards,
fatzopilot

**Isomorphic** · 6 May 2013, 14:23

Thanks for the response. We'll look into these.
On the positive side, it sounds like you've actually got a working solution as far as end users are concerned at least since the behavior is being added correctly in compiled mode (though obviously we'll try to get to the bottom of these mysterious problems with the handler count / dev mode behavior).

Regards
Isomorphic Software

**sjivan** · 7 May 2013, 10:40

Code:

FormItemIcon editIcon = formItemField.getIcon("EditViewButton2");
editIcon.addFormItemClickHandler(new FormItemClickHandler() {	
	@Override
	public void onFormItemClick(FormItemIconClickEvent event) {
		SC.say(formItemField+" button clicked.");
	}
})

Using a debugger step into the addFormItemClickHandler(..) method --> doAddHandler --> com.google.gwt.event.shared.HandlerManager-->addHandler(type, handler)

Looking at the code path it seems strange that you'd even get into a situation that getHandlerCount returns 0 after the above code is executed. Also step through the getHandlerCount() method and examine the variables. This should hopefully help you narrow down the issue.

Sanjiv

**fatzopilot** · 7 May 2013, 14:22

Hi Sanjiv,

my problem here is that I don't get thus far...
The exception mentioned above is raised at

Code:

dynamicForm.getField("ViewsFormSelectItem2");

or, alternatively at

Code:

dynamicForm.getFields();

Java 7.0.21
Google Web Toolkit 2.5.1 (svn revision releases/2.5@11546)
I get it in FF, Chrome, and IE dev mode on Windows 8 (64-bit).
As mentioned, in compiled mode it works OK, except that even here the handler count is 0;

I've create a small project to replicate the issue: https://www.dropbox.com/s/4kgb3v3cbammqu2/SGWTIntegrationTest.rar

I left the (this time) smartGWTEE (demo) libs included for convenience.
First install grails 2.2.2. :http://dist.springframework.org.s3.amazonaws.com/release/GRAILS/grails-2.2.2.zip
Set the GWT_HOME variable to your GTW directory
Change into the project dir (.../SGWTIntegrationTest/)
run
> grails war
in the project directory. After compilation finished, run
> grails run-gwt-client
Run
> grails run-app
in the same shell.

Call http://localhost:8080/SGWTIntegrationTest/sgwt?gwt.codesvr=127.0.0.1:9997
in the browser.
The same happens in debug mode if the project is imported into GGTS (Grails Eclipse Flavor).

Regards,
fatzopilot

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