Package org.apache.tapestry5.internal.services

Class PageRenderQueueImpl

java.lang.Object

org.apache.tapestry5.internal.services.PageRenderQueueImpl

All Implemented Interfaces:

PageRenderQueue

@Scope("perthread")
public class PageRenderQueueImpl
extends Object
implements PageRenderQueue

This services keeps track of the page being rendered and the root command for the partial render, it is therefore request/thread scoped. There's a filter pipeline around the rendering, and that gets to be stateless because this service, at the end of the pipeline, is stateful.

Constructor Summary

Constructors

Constructor	Description
PageRenderQueueImpl(LoggerSource loggerSource)

Method Summary

Modifier and Type	Method	Description
void	addPartialMarkupRendererFilter(PartialMarkupRendererFilter filter)	Adds an optional filter to the rendering.
void	addPartialRenderer(RenderCommand renderer)	Adds a rendering command to the queue of rendering commands.
Page	getRenderingPage()	Returns the page that is rendering markup content.
void	initializeForCompletePage(Page page)	Initializes the queue for rendering of a complete page.
boolean	isPartialRenderInitialized()	Returns true if either PageRenderQueue.addPartialRenderer(org.apache.tapestry5.runtime.RenderCommand) or PageRenderQueue.addPartialMarkupRendererFilter(org.apache.tapestry5.services.PartialMarkupRendererFilter) has been invoked.
void	render(MarkupWriter writer)	Render to the markup writer, as setup by the PageRenderQueue.initializeForCompletePage(org.apache.tapestry5.internal.structure.Page) or PageRenderQueue.addPartialRenderer(org.apache.tapestry5.runtime.RenderCommand) methods.
void	renderPartial(MarkupWriter writer, JSONObject reply)	Performs a partial markup render, as configured via PageRenderQueue.addPartialRenderer(org.apache.tapestry5.runtime.RenderCommand).
void	setRenderingPage(Page page)	Sets the default page that will render the response.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PageRenderQueueImpl

public PageRenderQueueImpl(LoggerSource loggerSource)

Method Detail

initializeForCompletePage

public void initializeForCompletePage(Page page)

Description copied from interface: PageRenderQueue

Initializes the queue for rendering of a complete page.

Specified by:

initializeForCompletePage in interface PageRenderQueue

setRenderingPage

public void setRenderingPage(Page page)

Description copied from interface: PageRenderQueue

Sets the default page that will render the response.

Specified by:

setRenderingPage in interface PageRenderQueue

isPartialRenderInitialized

public boolean isPartialRenderInitialized()

Description copied from interface: PageRenderQueue

Returns true if either PageRenderQueue.addPartialRenderer(org.apache.tapestry5.runtime.RenderCommand) or PageRenderQueue.addPartialMarkupRendererFilter(org.apache.tapestry5.services.PartialMarkupRendererFilter) has been invoked.

Specified by:

isPartialRenderInitialized in interface PageRenderQueue

addPartialRenderer

public void addPartialRenderer(RenderCommand renderer)

Description copied from interface: PageRenderQueue

Adds a rendering command to the queue of rendering commands. This must not be invoked until after the rendering page has been identified.

Specified by:

addPartialRenderer in interface PageRenderQueue

Parameters:

renderer - responsible for rendering a portion of the final markup

getRenderingPage

public Page getRenderingPage()

Description copied from interface: PageRenderQueue

Returns the page that is rendering markup content.

Specified by:

getRenderingPage in interface PageRenderQueue

render

public void render(MarkupWriter writer)

Description copied from interface: PageRenderQueue

Render to the markup writer, as setup by the PageRenderQueue.initializeForCompletePage(org.apache.tapestry5.internal.structure.Page) or PageRenderQueue.addPartialRenderer(org.apache.tapestry5.runtime.RenderCommand) methods.

Specified by:

render in interface PageRenderQueue

Parameters:

writer - to write markup to

addPartialMarkupRendererFilter

public void addPartialMarkupRendererFilter(PartialMarkupRendererFilter filter)

Description copied from interface: PageRenderQueue

Adds an optional filter to the rendering. Optional filters are temporary, used just during the current partial render (as opposed to filters contributed to the PartialMarkupRenderer service which are permanent, shared and stateless. Filters are added to the end of the pipeline (after all permanent contributions). Filters will be executed in the order in which they are added.

Specified by:

addPartialMarkupRendererFilter in interface PageRenderQueue

Parameters:

filter - to add to the pipeline

renderPartial

public void renderPartial(MarkupWriter writer,
                          JSONObject reply)

Description copied from interface: PageRenderQueue

Performs a partial markup render, as configured via PageRenderQueue.addPartialRenderer(org.apache.tapestry5.runtime.RenderCommand).

Specified by:

renderPartial in interface PageRenderQueue

Parameters:

writer - to which markup should be written

reply - JSONObject which will contain the partial response