java.lang.Object
- javax.faces.render.Renderer
- - javax.faces.render.RendererWrapper

All Implemented Interfaces:

FacesWrapper<Renderer>
```
public abstract class RendererWrapper
extends Renderer
implements FacesWrapper<Renderer>
```
Provides a simple implementation of Renderer that can be subclassed by developers wishing to provide specialized behavior to an existing Renderer instance. The default implementation of all methods is to call through to the wrapped Renderer instance.

Usage: extend this class and override getWrapped() to return the instance being wrapping.

Since:

2.2

Field Summary
- Fields inherited from class javax.faces.render.Renderer
  PASSTHROUGH_RENDERER_LOCALNAME_KEY

Constructor Summary

Constructors
Constructor and Description

RendererWrapper()

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Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`String`	`convertClientId(FacesContext context, String clientId)` Convert the component generated client id to a form suitable for transmission to the client.
`void`	`decode(FacesContext context, UIComponent component)` Decode any new state of the specified `UIComponent` from the request contained in the specified `FacesContext`, and store that state on the `UIComponent`.
`void`	`encodeBegin(FacesContext context, UIComponent component)` Render the beginning specified `UIComponent` to the output stream or writer associated with the response we are creating.
`void`	`encodeChildren(FacesContext context, UIComponent component)` Render the child components of this `UIComponent`, following the rules described for `encodeBegin()` to acquire the appropriate value to be rendered.
`void`	`encodeEnd(FacesContext context, UIComponent component)` Render the ending of the current state of the specified `UIComponent`, following the rules described for `encodeBegin()` to acquire the appropriate value to be rendered.
`Object`	`getConvertedValue(FacesContext context, UIComponent component, Object submittedValue)` Attempt to convert previously stored state information into an object of the type required for this component (optionally using the registered `Converter` for this component, if there is one).
`boolean`	`getRendersChildren()` Return a flag indicating whether this `Renderer` is responsible for rendering the children the component it is asked to render.
`abstract Renderer`	`getWrapped()` A class that implements this interface uses this method to return an instance of the class being wrapped.

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

- Constructor Detail
  - RendererWrapper
```
public RendererWrapper()
```
- Method Detail
  - getWrapped
```
public abstract Renderer getWrapped()
```
    Description copied from interface: FacesWrapper
    
    A class that implements this interface uses this method to return an instance of the class being wrapped.
    
    Specified by:
    
    getWrapped in interface FacesWrapper<Renderer>
    
    Returns:
    
    the instance we are wrapping
  - convertClientId
```
public String convertClientId(FacesContext context,
                              String clientId)
```
    Description copied from class: Renderer
    
    Convert the component generated client id to a form suitable for transmission to the client.
    
    The default implementation returns the argument clientId unchanged.
    
    Overrides:
    
    convertClientId in class Renderer
    
    Parameters:
    
    context - FacesContext for the current request
    
    clientId - the client identifier to be converted to client a specific format.
  - getConvertedValue
```
public Object getConvertedValue(FacesContext context,
                                UIComponent component,
                                Object submittedValue)
                         throws ConverterException
```
    Description copied from class: Renderer
    
    Attempt to convert previously stored state information into an object of the type required for this component (optionally using the registered Converter for this component, if there is one). If conversion is successful, the new value should be returned from this method; if not, a ConverterException should be thrown.
    
    Overrides:
    
    getConvertedValue in class Renderer
    
    Parameters:
    
    context - FacesContext for the request we are processing
    
    component - UIComponent to be decoded.
    
    submittedValue - a value stored on the component during decode.
    
    Throws:
    
    ConverterException - if the submitted value cannot be converted successfully.
  - decode
```
public void decode(FacesContext context,
                   UIComponent component)
```
    Description copied from class: Renderer
    
    Decode any new state of the specified UIComponent from the request contained in the specified FacesContext, and store that state on the UIComponent.
    
    During decoding, events may be enqueued for later processing (by event listeners that have registered an interest), by calling queueEvent() on the associated UIComponent.
    
    Overrides:
    
    decode in class Renderer
    
    Parameters:
    
    context - FacesContext for the request we are processing
    
    component - UIComponent to be decoded.
  - encodeBegin
```
public void encodeBegin(FacesContext context,
                        UIComponent component)
                 throws IOException
```
    Description copied from class: Renderer
    
    Render the beginning specified UIComponent to the output stream or writer associated with the response we are creating. If the conversion attempted in a previous call to getConvertedValue() for this component failed, the state information saved during execution of decode() should be used to reproduce the incorrect input.
    
    Overrides:
    
    encodeBegin in class Renderer
    
    Parameters:
    
    context - FacesContext for the request we are processing
    
    component - UIComponent to be rendered
    
    Throws:
    
    IOException - if an input/output error occurs while rendering
  - encodeChildren
```
public void encodeChildren(FacesContext context,
                           UIComponent component)
                    throws IOException
```
    Description copied from class: Renderer
    
    Render the child components of this UIComponent, following the rules described for encodeBegin() to acquire the appropriate value to be rendered. This method will only be called if the rendersChildren property of this component is true.
    
    Overrides:
    
    encodeChildren in class Renderer
    
    Parameters:
    
    context - FacesContext for the response we are creating
    
    component - UIComponent whose children are to be rendered
    
    Throws:
    
    IOException - if an input/output error occurs while rendering
  - encodeEnd
```
public void encodeEnd(FacesContext context,
                      UIComponent component)
               throws IOException
```
    Description copied from class: Renderer
    
    Render the ending of the current state of the specified UIComponent, following the rules described for encodeBegin() to acquire the appropriate value to be rendered.
    
    Overrides:
    
    encodeEnd in class Renderer
    
    Parameters:
    
    context - FacesContext for the response we are creating
    
    component - UIComponent to be rendered
    
    Throws:
    
    IOException - if an input/output error occurs while rendering
  - getRendersChildren
```
public boolean getRendersChildren()
```
    Description copied from class: Renderer
    
    Return a flag indicating whether this Renderer is responsible for rendering the children the component it is asked to render. The default implementation returns false.
    
    Overrides:
    
    getRendersChildren in class Renderer

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Bij voorbaat dank.

Document heeft de 11/06/2005 gemaakt, de laatste keer de 18/08/2025 gewijzigd
Bron van het afgedrukte document:https://www.gaudry.be/nl/java-api-javaee-rf-javax/faces/render/RendererWrapper.html

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Referenties

Manuel PHP : https://docs.oracle.com, RendererWrapper (Java(TM) EE 7 Specification APIs)

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Class RendererWrapper

Field Summary

Fields inherited from class javax.faces.render.Renderer

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

RendererWrapper

Method Detail

getWrapped

convertClientId

getConvertedValue

decode

encodeBegin

encodeChildren

encodeEnd

getRendersChildren

Referenties