JBossDeveloper

Thanks for your ideas in order to assign an action to a HtmlMenuItem with MethodExpression/setActionExpression instead of deprecated MethodBinding/setAction.

Please, would you say me how to use MethodExpression/setActionExpression in this situation ?

I have unsuccessfully tried as follows:

import javax.el.MethodExpression;
...
HtmlMenuItem menuItem = new HtmlMenuItem();
menuItem.setValue("Sec. Change Passsword");
MethodExpression methodExp = new MethodExpression("#{otherBean.action}");
menuItem.setActionExpression(methodExp);

is it possible to apply a4j:repeat tag to repeat menuItem?

I would like to use the <a4j:repeat> tag to put dynamic MenuItems into the DropDownMenu but I fail doing this. Creating the MenuItems dynamically in Java as described above in this thread works fine but feels like a workaround to me. I would like to have the layouts in XML if possible.

<h:form>
<h:panelGrid ...>
<rich:dropDownMenu value="Something with options">
<a4j:repeat value="#{anyModel.options}" var="oneOption">
<rich:menuItem value="#{oneOption}"/>
</a4j:repeat>
</rich:dropDownMenu>
</h:panelGrid>
</h:form>

...could someone tell me why this approach does not work?

I guess a4j:repeat won't do the job, not sure though..

You can use binding for your dropDownMenu and create menuItems in backing bean.. the following code worked for me

import org.richfaces.component.html.HtmlDropDownMenu;
import org.richfaces.component.html.HtmlMenuItem;
...
private HtmlDropDownMenu dropDownMenu = new HtmlDropDownMenu();
...
public TestPage() {
 HtmlMenuItem item = new HtmlMenuItem();
 item.setValue("item");

 FacesContext fc = FacesContext.getCurrentInstance();
 ELContext el = fc.getELContext();
 MethodExpression me = fc.getApplication().getExpressionFactory().createMethodExpression(el, "#{testPage.testMeth}", null, new Class[0]);
 item.setActionExpression(me);

 getDropDownMenu().getChildren().add(item);
}

new Class[0]

<rich:dropDownMenu value="Menu" binding="#{testPage.dropDownMenu}">

I gave a bad example earlier so now I will make up for my misstake. The following code does not work...

<h:form>
 <h:panelGrid ...>
 <rich:dropDownMenu value="Something with options">
 <a4j:repeat value="#{anyModel.options}" var="oneOption">
 <rich:menuItem binding="#{oneOption}" value="#{oneOption}"/>
 </a4j:repeat>
 </rich:dropDownMenu>
 </h:panelGrid>
</h:form>

<h:form>
 <h:panelGrid ...>
 <rich:dropDownMenu value="Something with options">
...made the repeat logic programmatically in the binding method </rich:dropDownMenu>
 </h:panelGrid>
</h:form>

You shouldn't use repeat components for such cases. You should use c:forEach

I cannot seem find the necessary includes for this code:

FacesContext fc = FacesContext.getCurrentInstance();
ELContext el = fc.getELContext();
 MethodExpression me = fc.getApplication().getExpressionFactory().createMethodExpression(el, "#{testPage.testMeth}", null, new Class[0]);

Did you tried:

ExpressionFactory factory = SeamExpressionFactory.INSTANCE;

FacesContext fc = FacesContext.getCurrentInstance();
ELContext el = fc.getELContext();

MethodExpression expression = factory.createMethodExpression(el, menuItem.getAction(), Object.class,new Class<?>[0]);

I'm not using seam.

There must be a way to do this without seam I guess?

I have successfully followed your indications for building a dropDownMenu dynamically, but I have problems assigning an action with a parameter to a HtmlMenuItem.

Here is the page code:

<rich:dropDownMenu binding="#{menuBean.myMenu}" >
</rich:dropDownMenu>

Here is the Java code in the menuBean:

private HtmlDropDownMenu getMyMenu() {
 HtmlDropDownMenu menu = new HtmlDropDownMenu();
 menu.setStyle("border:1px solid #BCD1FF");
 menu.setValue("Security Actions");

 HtmlMenuItem menuItem = new HtmlMenuItem();
 String subOption = "Sec. Change Passsword";
 menuItem.setValue(subOption);

 Application app = FacesContext.getCurrentInstance().getApplication();
 java.lang.Class[] params = { java.lang.String.class };
 MethodBinding mb = app.createMethodBinding ("#{otherBean.action}", params );
 ??? java.lang.Object[] args = { new java.lang.String( subOption ) };
 ??? mb.invoke( javax.faces.context.FacesContext.getCurrentInstance(), args );
 menuItem.setAction (mb);

 menu.getChildren().add(menuItem);
 return menu;
 }

Why do you use deprecated createMethodBinding instead of createMethodExpression?

Can anybody from the richfaces team show a code example of how this should be done?

Ie a complete createMethodExpression code example?

"dmitry.demyankov" wrote:
Why do you use deprecated createMethodBinding instead of createMethodExpression?

"Dsleeper" wrote:
Can anybody from the richfaces team show a code example of how this should be done?

Ie a complete createMethodExpression code example?

<rich:dropDownMenu binding="#{webmenu.myMenu}" >
</rich:dropDownMenu>

public class WebMenu
{
 private static org.slf4j.Logger _log = org.slf4j.LoggerFactory.getLogger( WebMenu.class );

 private String lastItem = "None";

 public org.richfaces.component.html.HtmlDropDownMenu getMyMenu()
 {
 _log.trace( "Creating menu" );

 org.richfaces.component.html.HtmlDropDownMenu menu =
 new org.richfaces.component.html.HtmlDropDownMenu();
 menu.setValue( "Security Actions" );

 org.richfaces.component.html.HtmlMenuItem menuItem =
 new org.richfaces.component.html.HtmlMenuItem();
 String subOption = "Sec. Change Passsword";
 menuItem.setValue( subOption );

 javax.faces.application.Application app =
 javax.faces.context.FacesContext.getCurrentInstance().getApplication();
 javax.faces.el.MethodBinding mb = app.createMethodBinding( "#{webmenu.onItemClick}", new Class[] { javax.faces.event.ActionEvent.class } );
 menuItem.setActionListener( mb );

 menu.getChildren().add( menuItem );
 return( menu );
 }

 public void onItemClick( javax.faces.event.ActionEvent event )
 {
 Object obj = event.getSource();

 if( obj instanceof org.richfaces.component.html.HtmlMenuItem )
 {
 org.richfaces.component.html.HtmlMenuItem item =
 (org.richfaces.component.html.HtmlMenuItem)obj;
 if( item != null )
 {
 lastItem = item.getValue().toString();
 _log.trace( "Clicked On: " + lastItem );
 }
 }
 }
}

hello, i have the following problem:
http://www.jboss.org/index.html?module=bb&op=viewtopic&t=123268

in my .ear file there are:
./
./lib/richfaces-ui
./lib/richfaces-impl

because if i dont include them i got class not found exception: UIDropDownMenu.

also:

./war/WEB-INF/lib/richfaces-impl
./war/WEB-INF/lib/richfaces-ui

maybe the problem is with classloading ?