[Integration] Web Dynpro ABAP calling Flex in Popup (without Flash Islands)

Question

Hi,
We do not intend to install Enhancement Package 1 in a near future.
Nevertheless, we do have requirements where Flex should be integrated with Web Dynpro ABAP (Flex components embedded or 'attached' to Web Dynpro ABAP applications).
I would like to open a popup showing a Flex component. Then, the user validates and the Web DYnpro ABAP application is resumed. All this integrated within EP 7.0.
What, according to you, would be the most effective combination : 
- Suspend / Resume plug
- Server-side cookies
- iFrame (although it is deprecated)
Given what I have read so far, it seems encapsulating the .swf within a BSP application would be the best shot. Could it be possible to get rid of this 'additional layer' ?
Thanks in advance.
Best regards,
Guillaume

Answer 1

Web Dynpro ABAP
Define a suspend and a resume plug.
BSP
Retrieve the parameters sent by WDA either by AUTO attributes or the following code
CONSTANTS: c_resume_name          TYPE string  VALUE `sap-wd-resumeurl`.
DATA: lt_tihttpnvp                TYPE tihttpnvp.
FIELD-SYMBOLS: <fs_httpnvp>       LIKE LINE OF lt_tihttpnvp,
               <fs_dept_magasin>  LIKE LINE OF t_dept_magasins.
** Lecture des paramètres envoyés (par le WD ABAP)
CALL METHOD request->get_form_fields
  CHANGING
    fields = lt_tihttpnvp.
READ TABLE lt_tihttpnvp ASSIGNING <fs_httpnvp> WITH KEY name = c_resume_name.
IF sy-subrc = 0.
  e_url = <fs_httpnvp>-value.
ENDIF.
Flex
To return to the Web DYnpro ABAP, call a Javascript function within the BSP using this kind of code :
jsReturn = ExternalInterface.call("sendBackToSAP", selectedDepartmentsParam, orderParam);
BSP
First, to react to the user action in the Flex component, define a Javascript function in the
      function sendBackToSAP(departements, ordre) {
         fireServerEvent(departements, ordre);
         return("Done");
To fire a server-event (in order for BSP to call the WDA resume plug), I use this declaration :
<!--  Event used by the Javascript to trigger OnInputProcessing so as to create
              the server-side cookie -->
       <bsp:htmlbEvent name= "fireServerEvent"
                       id  = "flexAction"
                       p1  = "departements"
                       p2  = "ordre"></bsp:htmlbEvent>
Last, I simply call the URL that the WDA gives me first :
navigation->goto_page( e_url ).
If people are interested in a more detailed presentation, feel free to reply to this post, and I will write a blog about this. Nevertheless, it should become pretty obsolete with the Flash Islands release... 
Edited by: Guillaume Garcia on Oct 11, 2008 11:13 AM