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## javax.faces.render
Class ClientBehaviorRenderer

    java.lang.Object
      javax.faces.render.ClientBehaviorRenderer

    public abstract class ClientBehaviorRenderer

extends Object

A ClientBehaviorRenderer produces the client-side script that implements a `ClientBehavior`'s client-side logic. It can also enqueue server-side `BehaviorEvent`s that may be processed later by event listeners that have registered an interest.

Individual `ClientBehaviorRenderer` instances will be instantiated as requested during the rendering process, and will remain in existence for the remainder of the lifetime of a web application. Because each instance may be invoked from more than one request processing thread simultaneously, they MUST be programmed in a thread-safe manner.

Since:
  2.0

Constructor Summary
`ClientBehaviorRenderer()`

Method Summary
`void` | `decode(FacesContext context, UIComponent component, ClientBehavior behavior)` Decode any new state of this `ClientBehavior` from the request contained in the specified `FacesContext`.
`String` | `getScript(ClientBehaviorContext behaviorContext, ClientBehavior behavior)` Return the script that implements this ClientBehavior's client-side logic.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### ClientBehaviorRenderer

    public ClientBehaviorRenderer()

Method Detail

### getScript

    public String getScript(ClientBehaviorContext behaviorContext,
                            ClientBehavior behavior)

  Return the script that implements this ClientBehavior's client-side logic. The default implementation returns `null`.

  ClientBehaviorRenderer.getScript() implementations are allowed to return null to indicate that no script is required for this particular getScript() call. For example, a ClientBehaviorRenderer implementation may return null if the associated ClientBehavior is disabled.

  Parameters:
    `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(). ClientBehaviorRenderer implementations must not hold onto references to ClientBehaviorContexts.
    `behavior` - the ClientBehavior instance that generates script.
  Returns:
    script that provides the client-side behavior, or null if no script is required.
  Since:
    2.0

### decode

    public void decode(FacesContext context,
                       UIComponent component,
                       ClientBehavior behavior)

  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()`.

  Parameters:
    `context` - `FacesContext` for the request we are processing
    `component` - `UIComponent` the component associated with this `Behavior`
    `behavior` - `ClientBehavior` the behavior instance
  Throws:
    `NullPointerException` - if `context`, `component` `behavior` is `null`
  Since:
    2.0

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