Slot

The UiSlotWidthHandler can be used to easily handle dynamic slot widths. The handler provides two different attributes:

This width itself (a, b, c, ...)
The information to show the slot or not (showA, showB, showC...)

<j:row id="row">
	<j:slot width="#{handlerSlotBean.uiSlot.a}" rendered="#{handlerSlotBean.uiSlot.showA}">
		<p:panel header="Slot A" styleClass="jeeslPanel jeesl-panel">
			<j:inputGrid labelWidth="9">
				<p:outputLabel value="Width"/>
				<h:panelGroup styleClass="ui-outputtext"><h:outputText value="#{handlerSlotBean.uiSlot.a}"/></h:panelGroup>
			</j:inputGrid>
		</p:panel>
	</j:slot>
	<j:slot width="#{handlerSlotBean.uiSlot.b}" rendered="#{handlerSlotBean.uiSlot.showB}">
		<p:panel header="Slot B" styleClass="jeeslPanel jeesl-panel">
			<j:inputGrid labelWidth="9">
				<p:outputLabel value="Width"/>
				<h:panelGroup styleClass="ui-outputtext"><h:outputText value="#{handlerSlotBean.uiSlot.b}"/></h:panelGroup>
			</j:inputGrid>
		</p:panel>
	</j:slot>
	<j:slot width="#{handlerSlotBean.uiSlot.c}" rendered="#{handlerSlotBean.uiSlot.showC}">
		<p:panel header="Slot C" styleClass="jeeslPanel jeesl-panel">
			<j:inputGrid labelWidth="9">
				<p:outputLabel value="Width"/>
				<h:panelGroup styleClass="ui-outputtext"><h:outputText value="#{handlerSlotBean.uiSlot.c}"/></h:panelGroup>
			</j:inputGrid>
		</p:panel>
	</j:slot>
	<j:slot width="#{handlerSlotBean.uiSlot.d}" rendered="#{handlerSlotBean.uiSlot.showD}">
		<p:panel header="Slot D" styleClass="jeeslPanel jeesl-panel">
			<j:inputGrid labelWidth="9">
				<p:outputLabel value="Width"/>
				<h:panelGroup styleClass="ui-outputtext"><h:outputText value="#{handlerSlotBean.uiSlot.d}"/></h:panelGroup>
			</j:inputGrid>
		</p:panel>
	</j:slot>
</j:row>

@Named @ViewScoped
public class HandlerSlotBean extends AbstractJeeBean implements Serializable
{
	final static Logger logger = LoggerFactory.getLogger(HandlerSlotBean.class);
	private static final long serialVersionUID = 1L;
	
	private final UiSlotWidthHandler uiSlot;
	public UiSlotWidthHandler getUiSlot() {return uiSlot;}

	public HandlerSlotBean()
	{
		uiSlot = new UiSlotWidthHandler();
	}
	
	@PostConstruct public void init()
	{
		super.initSecurity();
		test1();
	}
	
	public void test1() {uiSlot.set(2,2,2,6);}
	public void test2() {uiSlot.set(5,3,2,2);}
	public void test3() {uiSlot.set(6,3,3);}
	public void test4() {uiSlot.set(8,2,0,2);}
}

Resource not found: 
/jeesl/java/org/jeesl/controller/handler/ui/UiSlotWidthHandler.java
 must be available in the classpath