public class SelectItemGroups extends UISelectItems
The o:selectItemGroups is an extension of UISelectItems which allows you to iterate over a
nested collection representing groups of select items. This is basically the UIComponent counterpart of
javax.faces.model.SelectItemGroup. There is no equivalent (yet) in the standard JSF API. Currently the
only way to represent SelectItemGroup in UI is to manually create and populate them in a backing bean which
can end up to be quite verbose.
Below example assumes a List<Category> as value wherein Category in turn has a
List<Product>.
<h:selectOneMenu value="#{bean.selectedProduct}" converter="omnifaces.SelectItemsConverter">
<f:selectItem itemValue="#{null}" />
<o:selectItemGroups value="#{bean.categories}" var="category" itemLabel="#{category.name}">
<f:selectItems value="#{category.products}" var="product" itemLabel="#{product.name}" />
</o:selectItemGroups>
</h:selectOneMenu>
| Modifier and Type | Field and Description |
|---|---|
static String |
COMPONENT_TYPE
The standard component type.
|
COMPONENT_FAMILYATTRS_WITH_DECLARED_DEFAULT_VALUES, BEANINFO_KEY, bindings, COMPOSITE_COMPONENT_TYPE_KEY, COMPOSITE_FACET_NAME, CURRENT_COMPONENT, CURRENT_COMPOSITE_COMPONENT, FACETS_KEY, HONOR_CURRENT_COMPONENT_ATTRIBUTES_PARAM_NAME, VIEW_LOCATION_KEY| Constructor and Description |
|---|
SelectItemGroups() |
| Modifier and Type | Method and Description |
|---|---|
Object |
getValue()
An override which wraps each UISelectItem(s) child in a
SelectItemGroup. |
void |
setValueExpression(String name,
ValueExpression binding)
An override which checks if this isn't been invoked on
var attribute. |
getFamily, setValueaddClientBehavior, addFacesListener, broadcast, clearInitialState, decode, encodeBegin, encodeChildren, encodeEnd, findComponent, getAttributes, getChildCount, getChildren, getClientBehaviors, getClientId, getDefaultEventName, getEventNames, getFacesContext, getFacesListeners, getFacet, getFacetCount, getFacets, getFacetsAndChildren, getId, getListenersForEventClass, getParent, getPassThroughAttributes, getRenderer, getRendererType, getRendersChildren, getValueBinding, invokeOnComponent, isRendered, isTransient, markInitialState, processDecodes, processRestoreState, processSaveState, processUpdates, processValidators, queueEvent, removeFacesListener, restoreAttachedState, restoreState, saveAttachedState, saveState, setId, setParent, setRendered, setRendererType, setTransient, setValueBinding, subscribeToEvent, unsubscribeFromEventencodeAll, getClientId, getCompositeComponentParent, getContainerClientId, getCurrentComponent, getCurrentCompositeComponent, getNamingContainer, getPassThroughAttributes, getResourceBundleMap, getStateHelper, getStateHelper, getTransientStateHelper, getTransientStateHelper, getValueExpression, initialStateMarked, isCompositeComponent, isInView, isVisitable, popComponentFromEL, processEvent, pushComponentToEL, restoreTransientState, saveTransientState, setInView, visitTreepublic static final String COMPONENT_TYPE
public void setValueExpression(String name, ValueExpression binding)
var attribute.
Finally it delegates to the super method.setValueExpression in class UIComponentIllegalArgumentException - When this value expression is been set on var attribute.public Object getValue()
SelectItemGroup.getValue in class UISelectItemsCopyright © 2012–2022 OmniFaces. All rights reserved.