org.omnifaces.component.script

Class DeferredScript

java.lang.Object

javax.faces.component.UIComponent

javax.faces.component.UIComponentBase

org.omnifaces.component.script.ScriptFamily

org.omnifaces.component.script.DeferredScript

All Implemented Interfaces:

EventListener, javax.faces.component.PartialStateHolder, javax.faces.component.StateHolder, javax.faces.event.ComponentSystemEventListener, javax.faces.event.FacesListener, javax.faces.event.SystemEventListenerHolder

public class DeferredScript
extends ScriptFamily

DeferredScript is a component which defers the loading of the given script resource to the window load event. In other words, the given script resource is only loaded when the window is really finished with loading. So, the enduser can start working with the webpage without waiting for the additional scripts to be loaded. Usually, it are those kind of scripts which are just for progressive enhancement and thus not essential for the functioning of the webpage.

This will give bonus points with among others the Google PageSpeed tool, on the contrary to placing the script at bottom of body, or using defer="true" or even async="true".

Since:

1.8

Author:

Bauke Scholtz

Field Summary

Fields

Modifier and Type	Field and Description
static String	COMPONENT_TYPE The standard component type.

Fields inherited from class org.omnifaces.component.script.ScriptFamily

COMPONENT_FAMILY

Fields inherited from class javax.faces.component.UIComponent

BEANINFO_KEY, bindings, COMPOSITE_COMPONENT_TYPE_KEY, COMPOSITE_FACET_NAME, CURRENT_COMPONENT, CURRENT_COMPOSITE_COMPONENT, FACETS_KEY, VIEW_LOCATION_KEY

Constructor Summary

Constructors

Constructor and Description
DeferredScript() Construct a new DeferredScript component whereby the renderer type is set to DeferredScriptRenderer.RENDERER_TYPE.

Method Summary

Methods

Modifier and Type	Method and Description
void	processEvent(javax.faces.event.ComponentSystemEvent event)

Methods inherited from class org.omnifaces.component.script.ScriptFamily

getFamily, getRendersChildren

Methods inherited from class javax.faces.component.UIComponentBase

addClientBehavior, addFacesListener, broadcast, clearInitialState, decode, encodeBegin, encodeChildren, encodeEnd, findComponent, getAttributes, getChildCount, getChildren, getClientBehaviors, getClientId, getDefaultEventName, getEventNames, getFacesContext, getFacesListeners, getFacet, getFacetCount, getFacets, getFacetsAndChildren, getId, getParent, getRenderer, getRendererType, getValueBinding, invokeOnComponent, isRendered, isTransient, markInitialState, processDecodes, processRestoreState, processSaveState, processUpdates, processValidators, queueEvent, removeFacesListener, restoreAttachedState, restoreState, saveAttachedState, saveState, setId, setParent, setRendered, setRendererType, setTransient, setValueBinding

Methods inherited from class javax.faces.component.UIComponent

encodeAll, getClientId, getCompositeComponentParent, getContainerClientId, getCurrentComponent, getCurrentCompositeComponent, getListenersForEventClass, getNamingContainer, getResourceBundleMap, getStateHelper, getStateHelper, getValueExpression, initialStateMarked, isCompositeComponent, isInView, isVisitable, popComponentFromEL, pushComponentToEL, setInView, setValueExpression, subscribeToEvent, unsubscribeFromEvent, visitTree

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

COMPONENT_TYPE

public static final String COMPONENT_TYPE

The standard component type.

See Also:

Constant Field Values

Constructor Detail

DeferredScript

public DeferredScript()

Construct a new DeferredScript component whereby the renderer type is set to DeferredScriptRenderer.RENDERER_TYPE.

Method Detail

processEvent

public void processEvent(javax.faces.event.ComponentSystemEvent event)
                  throws javax.faces.event.AbortProcessingException

Specified by:

processEvent in interface javax.faces.event.ComponentSystemEventListener

Overrides:

processEvent in class javax.faces.component.UIComponent

Throws:

javax.faces.event.AbortProcessingException