Portal Eventing JSP TreeView

Question

I am trying to refactor a piece of code that was originally designed using HTMLB to create a tree view role menu that invokes an event in another iView.
My question is, can portal eventing be done with traditional  JavaScript as opposed to using HTMLB? We are not using WebDynPro for this project.
I would like to use a jsp treeview to re-engineer the existing htmlb tree structure, but wanted to get some feedback on the options...thanks

Answer 1

Hi Ryan,
> whether or not the eventing
> has to be done on the server side
The eventing between iViews is done by EPCF, and this is, as said, a pure JS framework. Often it might be senseful for the iView which gets "informed" by some other iView about some event with some event data, to use this data and to refresh itself. This depends on the concrete use case.
Having this said, it is obviously totally independent if you usue EPCF from some portal HTMLB-JSP, a "pure" JSP without HTMLB or a BSP - all of these things end up in HTML with the possibility to include JS - the EPCF calls.
See http://help.sap.com/saphelp_nw04/helpdata/en/82/04b340be3dff5fe10000000a155106/frameset.htm for further details.
> Can all of this be done without post backs
> to the server,
As said before, the eventing through EPCF works on client side, but in many cases it makes sense to refresh some iView with some data sent by the event.
Imagine a List-Details iView combination. The user has one iView with a list of products and another iView with the details of one product. By choosing one product in the list iView, this iView could raise an event, which is subscribed by the details iView, for example passing some product-ID. Now it would make sense to refresh the details iView with the ID given. The alternative would be to load all details data and only to show up the chosen details and to switch on the event. Two disadvantages: It's much harder to code and you may have a very long transmission/network time for the inital call of this iView.
> without using htmlb using JSP not BSP
See above, it's independent from the HTML-Layer.
> can you store a result set in a client side object,
> like a cookie, and if so, how?
For sure, somehow you can (at least some representation). But here I'm unsure again, in which direction this question aims, if this is really helpful.
Hope it helps
Detlev