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 push the implementation being wrapped to the constructor and use getWrapped()
to
access the instance being wrapped.
PASSTHROUGH_RENDERER_LOCALNAME_KEY
Constructor and Description |
---|
RendererWrapper()
Deprecated.
Use the other constructor taking the implementation being wrapped.
|
RendererWrapper(Renderer wrapped)
If this renderer has been decorated, the implementation doing the decorating should push the implementation being wrapped to this constructor. |
Modifier and Type | Method and Description |
---|---|
java.lang.String |
convertClientId(FacesContext context,
java.lang.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. |
java.lang.Object |
getConvertedValue(FacesContext context,
UIComponent component,
java.lang.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. |
Renderer |
getWrapped()
A class that implements this interface uses this method to return an instance of the class being wrapped. |
@Deprecated public RendererWrapper()
public RendererWrapper(Renderer wrapped)
If this renderer has been decorated, the implementation doing the decorating should push the implementation being
wrapped to this constructor. The getWrapped()
will then return the implementation being wrapped.
wrapped
- The implementation being wrapped.public Renderer getWrapped()
FacesWrapper
A class that implements this interface uses this method to return an instance of the class being wrapped.
getWrapped
in interface FacesWrapper<Renderer>
public java.lang.String convertClientId(FacesContext context, java.lang.String clientId)
Renderer
Convert the component generated client id to a form suitable for transmission to the client.
The default implementation returns the argument clientId
unchanged.
convertClientId
in class Renderer
context
- FacesContext
for the current requestclientId
- the client identifier to be converted to client a specific format.clientId
public java.lang.Object getConvertedValue(FacesContext context, UIComponent component, java.lang.Object submittedValue) throws ConverterException
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.
getConvertedValue
in class Renderer
context
- FacesContext
for the request we are processingcomponent
- UIComponent
to be decoded.submittedValue
- a value stored on the component during decode
.ConverterException
- if the submitted value cannot be converted successfully.public void decode(FacesContext context, UIComponent component)
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
.
decode
in class Renderer
context
- FacesContext
for the request we are processingcomponent
- UIComponent
to be decoded.public void encodeBegin(FacesContext context, UIComponent component) throws java.io.IOException
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.
encodeBegin
in class Renderer
context
- FacesContext
for the request we are processingcomponent
- UIComponent
to be renderedjava.io.IOException
- if an input/output error occurs while renderingpublic void encodeChildren(FacesContext context, UIComponent component) throws java.io.IOException
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
.
encodeChildren
in class Renderer
context
- FacesContext
for the response we are creatingcomponent
- UIComponent
whose children are to be renderedjava.io.IOException
- if an input/output error occurs while renderingpublic void encodeEnd(FacesContext context, UIComponent component) throws java.io.IOException
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.
encodeEnd
in class Renderer
context
- FacesContext
for the response we are creatingcomponent
- UIComponent
to be renderedjava.io.IOException
- if an input/output error occurs while renderingpublic boolean getRendersChildren()
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
.
getRendersChildren
in class Renderer