org.apache.tapestry5.internal.services.linktransform
Class LinkTransformerInterceptor

java.lang.Object
  org.apache.tapestry5.internal.services.linktransform.LinkTransformerInterceptor

All Implemented Interfaces:

ComponentEventLinkEncoder

public class LinkTransformerInterceptor
extends Object
implements ComponentEventLinkEncoder

Intercepts some methods of ComponentEventLinkEncoder, passing the returned Links through methods ofLinkTransformer.

Since:

5.2.0

Constructor Summary

LinkTransformerInterceptor(LinkTransformer linkTransformer, ComponentEventLinkEncoder delegate)

Method Summary

Link	createComponentEventLink(ComponentEventRequestParameters parameters, boolean forForm) Creates a link that encapsulates a component event request, including PersistentLocale (if set).
Link	createPageRenderLink(PageRenderRequestParameters parameters) Creates a Link that encapsulates a page render request, including activation context and PersistentLocale (if set).
ComponentEventRequestParameters	decodeComponentEventRequest(Request request) Checks the request, primarily the path, to determine the if the request is a component event request.
PageRenderRequestParameters	decodePageRenderRequest(Request request) Checks the request, primarily the path, to determine the if the request is a page render request.

Methods inherited from class java.lang.Object

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

Constructor Detail

LinkTransformerInterceptor

public LinkTransformerInterceptor(LinkTransformer linkTransformer,
                                  ComponentEventLinkEncoder delegate)

Method Detail

createComponentEventLink

public Link createComponentEventLink(ComponentEventRequestParameters parameters,
                                     boolean forForm)

Description copied from interface: ComponentEventLinkEncoder

Creates a link that encapsulates a component event request, including PersistentLocale (if set).

Forms:

• /context/pagename:eventname -- event on the page, no action context
• /context/pagename:eventname/foo/bar -- event on the page with action context "foo", "bar"
• /context/pagename.foo.bar -- event on component foo.bar within the page, default event, no action context
• /context/pagename.foo.bar/baz.gnu -- event on component foo.bar within the page, default event, with action context "baz", "gnu"
• /context/pagename.bar.baz:eventname/foo/gnu -- event on component bar.baz within the page with action context "foo" , "gnu"

The persistent locale may be placed in between the context name and the page name, i.e., "/context/fr/SomePage".

In many cases the context name is blank, so the path begins with a "/" and then the locale name or page name.

The page name portion may itself consist of a series of folder names, i.e., "admin/user/create". The context portion isn't the concern of this code, since Request.getPath() will already have stripped that off. We can act as if the context is always "/" (the path always starts with a slash).

Passes the resulting Link through the ComponentEventLinkTransformer chain of command, returning the result.

Specified by:

createComponentEventLink in interface ComponentEventLinkEncoder

Parameters:

parameters - defining page, component, activation context and other details

forForm - true if the event link will trigger a form submission

Returns:

link for the component event

createPageRenderLink

public Link createPageRenderLink(PageRenderRequestParameters parameters)

Description copied from interface: ComponentEventLinkEncoder

Creates a Link that encapsulates a page render request, including activation context and PersistentLocale (if set). Passes the resulting Link through the PageRenderLinkTransformer chain of command, returning the result.

Specified by:

createPageRenderLink in interface ComponentEventLinkEncoder

Parameters:

parameters - defining page to render and context

Returns:

link for the page render

decodeComponentEventRequest

public ComponentEventRequestParameters decodeComponentEventRequest(Request request)

Description copied from interface: ComponentEventLinkEncoder

Checks the request, primarily the path, to determine the if the request is a component event request. As a side-effect (necessary for historical reasons), responsible for setting the locale for the thread, including the PersistentLocale ... but only if the locale is a component event.

Specified by:

decodeComponentEventRequest in interface ComponentEventLinkEncoder

Parameters:

request - incoming request

Returns:

component event request details, if a component event request

decodePageRenderRequest

public PageRenderRequestParameters decodePageRenderRequest(Request request)

Description copied from interface: ComponentEventLinkEncoder

Checks the request, primarily the path, to determine the if the request is a page render request. As a side-effect (necessary for historical reasons), responsible for setting the locale for the thread, including the PersistentLocale ... but only if the request is a page render.

Specified by:

decodePageRenderRequest in interface ComponentEventLinkEncoder

Parameters:

request - incoming request

Returns:

page render request details, if a page render request