Perhaps this diagram will help to debug
http://tapestry.apache.org/component-rendering.html
On Monday, 2 April 2012, Chris Mylonas <ch...@opencsta.org> wrote:
> Hi Tapestry List,
>
> After spending a few hours with render phases and all that comes with it
(heartbeat/resources) I'm in a bit of a jam that I don't know where to go
next.
> I'm setting up a basic component called PhoneView that receives an
ArrayList of Phone objects...similar to the Tree example on the wiki [1]
>
> @CleanupRender & @BeforeRenderBody have the same code to make it easy for
the beginner (me!) to see his progress...
> There are 2 items in the array list I have created using a BeanEditForm,
so I presume I should see three lots of the div saying "CHRIS! This is your
amazing test div - " with the render phase name. (2 x BeforeRenderBody) +
(1 x CleanupRender).
>
> I'm not :(
>
> Running your eye over this code/template...can you help me?
>
>
> /**
> * Defines the source of the phones
> */
> @Parameter(required = true)
> private ArrayList<Phone> source ;
>
> /**
> * Iterator to go over the source (Phone) elements
> */
> private Iterator<Phone> iterator;
>
> /**
> *
> */
> @Inject
> private ComponentResources resources ;
>
> /**
> *
> */
> @Parameter
> private Phone currentPhone ;
>
> /**
> *
> */
> @Parameter(defaultPrefix = BindingConstants.LITERAL)
> private Block empty;
>
> /**
> *
> */
> @Environmental
> private Heartbeat heartbeat ;
>
> /**
> * @return
> */
> @SetupRender
> boolean SetupRender(){
> if( source == null ){
> return false ;
> }
> this.iterator = source.iterator();
> return (iterator.hasNext());
> }
>
> @BeginRender
> void beginRender(){
> currentPhone = iterator.next();
> heartbeat.begin();
> }
>
> @BeforeRenderBody
> void beforeRenderBody(MarkupWriter writer){
>
> Element cur = writer.element("div",
>
"class","userbackground").addClassName("adifferentbackground");
> cur.text("CHRIS! This is your amazing test div -
beforeRenderBody");
> writer.end();
>
>
> resources.renderInformalParameters(writer);
> }
> /**
> * @return
> */
> @AfterRender
> boolean afterRender(){
> heartbeat.end();
> return (!iterator.hasNext());
> }
>
> /**
> * @param writer
> */
> @CleanupRender
> void cleanupRender(MarkupWriter writer){
> Element cur = writer.element("div",
>
"class","userbackground").addClassName("adifferentbackground");
> cur.text("CHRIS! This is your amazing test div -
cleanupRender");
> writer.end();
> }
>
>
> And the tml snippet from Index.tml
>
> <t:grid source="phones"/>
> <br/>
> <t:pagelink page="Phone/Create">Add Phone</t:pagelink>
> <br/>
> Chris 1
> <br/>
> <t:PhoneView source="phones"/>
> <br/>
> Chris 2
>
>
>
> Thanks
> Chris
>
>
>
> [1] =
https://wiki.apache.org/tapestry/Tapestry5HowToCreateYourOwnComponents
