ViewHandlerWrapper (Java EE 5 SDK)

javax.faces.application Class ViewHandlerWrapper

java.lang.Object
  javax.faces.application.ViewHandler
      javax.faces.application.ViewHandlerWrapper

public abstract class ViewHandlerWrapper

extends ViewHandler

Provides a simple implementation of ViewHandler that can be subclassed by developers wishing to provide specialized behavior to an existing ViewHandler instance. The default implementation of all methods is to call through to the wrapped ViewHandler.

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

从以下版本开始:

1.2

ViewHandlerWrapper

public ViewHandlerWrapper()

getWrapped

protected abstract ViewHandler getWrapped()

返回:

the instance that we are wrapping.

calculateCharacterEncoding

public String calculateCharacterEncoding(FacesContext context)

The default behavior of this method is to call ViewHandler.calculateCharacterEncoding(javax.faces.context.FacesContext) on the wrapped ViewHandler object.

重写:

calculateCharacterEncoding in class ViewHandler

从以下版本开始:

1.2

另请参见:

ViewHandler.calculateCharacterEncoding(javax.faces.context.FacesContext)

calculateLocale

public Locale calculateLocale(FacesContext context)

The default behavior of this method is to call ViewHandler.calculateLocale(javax.faces.context.FacesContext) on the wrapped ViewHandler object.

规范说明:

calculateLocale in class ViewHandler

参数:

context - FacesContext for the current request

从以下版本开始:

1.2

另请参见:

ViewHandler.calculateLocale(javax.faces.context.FacesContext)

calculateRenderKitId

public String calculateRenderKitId(FacesContext context)

The default behavior of this method is to call ViewHandler.calculateRenderKitId(javax.faces.context.FacesContext) on the wrapped ViewHandler object.

规范说明:

calculateRenderKitId in class ViewHandler

参数:

context - FacesContext for the current request

从以下版本开始:

1.2

另请参见:

ViewHandler.calculateRenderKitId(javax.faces.context.FacesContext)

createView

public UIViewRoot createView(FacesContext context,
                             String viewId)

The default behavior of this method is to call ViewHandler.createView(javax.faces.context.FacesContext, String) on the wrapped ViewHandler object.

规范说明:

createView in class ViewHandler

从以下版本开始:

1.2

另请参见:

ViewHandler.createView(javax.faces.context.FacesContext, String)

getActionURL

public String getActionURL(FacesContext context,
                           String viewId)

The default behavior of this method is to call ViewHandler.getActionURL(javax.faces.context.FacesContext, String) on the wrapped ViewHandler object.

规范说明:

getActionURL in class ViewHandler

参数:

context - FacesContext for this request

viewId - View identifier of the desired view

从以下版本开始:

1.2

另请参见:

ViewHandler.getActionURL(javax.faces.context.FacesContext, String)

getResourceURL

public String getResourceURL(FacesContext context,
                             String path)

The default behavior of this method is to call ViewHandler.getResourceURL(javax.faces.context.FacesContext, String) on the wrapped ViewHandler object.

规范说明:

getResourceURL in class ViewHandler

参数:

context - FacesContext for the current request

path - Resource path to convert to a URL

从以下版本开始:

1.2

另请参见:

ViewHandler.getResourceURL(javax.faces.context.FacesContext, String)

initView

public void initView(FacesContext context)
              throws FacesException

The default behavior of this method is to call ViewHandler.initView(javax.faces.context.FacesContext) on the wrapped ViewHandler object.

重写:

initView in class ViewHandler

抛出异常:

FacesException - if a problem occurs setting the encoding, such as the UnsupportedEncodingException thrown by the underlying Servlet or Portlet technology when the encoding is not supported.

从以下版本开始:

1.2

另请参见:

ViewHandler.initView(javax.faces.context.FacesContext)

renderView

public void renderView(FacesContext context,
                       UIViewRoot viewToRender)
                throws IOException,
                       FacesException

The default behavior of this method is to call ViewHandler.renderView(javax.faces.context.FacesContext, javax.faces.component.UIViewRoot) on the wrapped ViewHandler object.

规范说明:

renderView in class ViewHandler

参数:

context - FacesContext for the current request

viewToRender - the view to render

抛出异常:

IOException - if an input/output error occurs

FacesException - if a servlet error occurs

从以下版本开始:

1.2

另请参见:

ViewHandler.renderView(javax.faces.context.FacesContext, javax.faces.component.UIViewRoot)

restoreView

public UIViewRoot restoreView(FacesContext context,
                              String viewId)

The default behavior of this method is to call ViewHandler.restoreView(javax.faces.context.FacesContext, String) on the wrapped ViewHandler object.

规范说明:

restoreView in class ViewHandler

参数:

context - FacesContext for the current request

viewId - the view identifier for the current request

从以下版本开始:

1.2

另请参见:

ViewHandler.restoreView(javax.faces.context.FacesContext, String)

writeState

public void writeState(FacesContext context)
                throws IOException

The default behavior of this method is to call ViewHandler.writeState(javax.faces.context.FacesContext) on the wrapped ViewHandler object.

规范说明:

writeState in class ViewHandler

参数:

context - FacesContext for the current request

抛出异常:

IOException - if an input/output error occurs

从以下版本开始:

1.2

另请参见:

ViewHandler.writeState(javax.faces.context.FacesContext)

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