public interface ClientBehavior extends Behavior
ClientBehavior is the base contract for Behaviors that attach script content to client-side
events exposed by ClientBehaviorHolder components. Instances of ClientBehavior may be attached
to components that implement the ClientBehaviorHolder contract by calling
ClientBehaviorHolder.addClientBehavior(java.lang.String, jakarta.faces.component.behavior.ClientBehavior). Once a ClientBehavior has been attached to a
ClientBehaviorHolder component, the component calls getScript(jakarta.faces.component.behavior.ClientBehaviorContext) to obtain the behavior's script and
the component wires this up to the appropriate client-side event handler. Note that the script content returned by
this method is always in-line script content. If the implementing class wants to invoke functions defined in other
script resources, the implementing class must use the ResourceDependency or
ResourceDependencies annotation.
| Modifier and Type | Method and Description |
|---|---|
void |
decode(FacesContext context,
UIComponent component)
Decode any new state of this |
java.util.Set<ClientBehaviorHint> |
getHints()
Returns hints that describe the behavior of the ClientBehavior implementation. |
java.lang.String |
getScript(ClientBehaviorContext behaviorContext)
Return the script that implements this ClientBehavior's client-side logic. |
java.lang.String getScript(ClientBehaviorContext behaviorContext)
Return the script that implements this ClientBehavior's client-side logic.
ClientBehavior.getScript() implementations are allowed to return null to indicate that no script is required for this particular getScript() call. For example, a ClientBehavior implementation may return null if the Behavior is disabled.
behaviorContext - the ClientBehaviorContext that provides properties that might influence this
getScript() call. Note that ClientBehaviorContext instances are short-lived objects that are only valid for the
duration of the call to getScript(). ClientBehavior implementations must not hold onto references to
ClientBehaviorContexts.java.lang.NullPointerException - if behaviorContext is nullvoid decode(FacesContext context, UIComponent component)
Decode any new state of this ClientBehavior from the request contained in the specified FacesContext.
During decoding, events may be enqueued for later processing (by event listeners who have registered an interest), by
calling queueEvent(). Default implementation delegates decoding to
ClientBehaviorRenderer.decode(FacesContext, UIComponent, ClientBehavior)
context - FacesContext for the request we are processingcomponent - UIComponent the component associated with this Behaviorjava.lang.NullPointerException - if context or component is null.java.util.Set<ClientBehaviorHint> getHints()
Returns hints that describe the behavior of the ClientBehavior implementation. The hints may impact how Renderers
behave in the presence of Behaviors. For example, when a Behavior that specifies
ClientBehaviorHint.SUBMITTING is present, the Renderer may choose to alternate the scripts that it
generates itself.