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.
PASSTHROUGH_RENDERER_LOCALNAME_KEY
Constructor and Description |
---|
RendererWrapper() |
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. |
public abstract 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 String convertClientId(FacesContext context, 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.public Object getConvertedValue(FacesContext context, UIComponent component, 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 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 renderedIOException
- if an input/output error occurs while renderingpublic void encodeChildren(FacesContext context, UIComponent component) throws 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 renderedIOException
- if an input/output error occurs while renderingpublic void encodeEnd(FacesContext context, UIComponent component) throws 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 renderedIOException
- 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
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