SAP HTML Viewer - GET and POST method

[former_member998879]

Hi gurus,

I'm working with SAP HTML Viewer control. I've seen that with this controller i can load an external html page, such as

in the SAPHTML_DEMO1 example report. I wonder if is possible provide data from the report to html page through the controller, and receive data from the html page, after a page submi, and acquire it from the ABAP side.

Is it possible? Any idea?

Thanks in advance for the help!

Regards

Davide

[Former Member]

Hi Davide ,

CLASS cl_myevent_handler DEFINITION.

  PUBLIC SECTION.
    METHODS: on_sapevent
               FOR EVENT sapevent OF cl_gui_html_viewer
                 IMPORTING action frame getdata postdata query_table.

ENDCLASS.                    "cl_myevent_handler DEFINITION
DATA: evt_receiver TYPE REF TO cl_myevent_handler.

  IF html_control IS INITIAL.
    prog_repid = sy-repid.

    CREATE OBJECT my_container
        EXPORTING
            container_name = 'MAIN'.

    CREATE OBJECT html_control
         EXPORTING
              parent    = my_container.
    IF sy-subrc NE 0.
*
    ENDIF.

* register event
    myevent-eventid = html_control->m_id_sapevent.
    myevent-appl_event = 'x'.
    APPEND myevent TO myevent_tab.
    CALL METHOD html_control->set_registered_events
      EXPORTING
        events = myevent_tab.

    CREATE OBJECT evt_receiver.

    SET HANDLER evt_receiver->on_sapevent
                FOR html_control.

  DATA: doc_url(80).

  CALL METHOD html_control->load_html_document
    EXPORTING
      document_id  = 'ZVTLM1'
    IMPORTING
      assigned_url = doc_url
    EXCEPTIONS
      OTHERS       = 1.

  IF sy-subrc EQ 0.
    CALL METHOD html_control->show_url
      EXPORTING
        url = doc_url.
  ENDIF.

CLASS cl_myevent_handler IMPLEMENTATION.

METHOD on_sapevent.

CLEAR edaction.

CLEAR edframe.

CLEAR edgetdata.

CLEAR edpostdataline.

edaction = action.

edframe = frame.

edgetdata = getdata.

postdata_tab = postdata.

IF NOT postdata_tab IS INITIAL.

READ TABLE postdata_tab INDEX 1 INTO edpostdataline.

ENDIF.

edquery_table = query_table.

• BREAK-POINT.

CASE action.

WHEN 'VEHICLE'.

PERFORM get_vehicle.

WHEN 'INVOICE'.

PERFORM get_invoice.

WHEN 'REPORTS'.

PERFORM reports.

WHEN 'PRINT'.

PERFORM print_invoice.

WHEN OTHERS.

ENDCASE.

ENDMETHOD. "on_sapevent

ENDCLASS. "cl_myevent_handler IMPLEMENTATION

}

The event mechanism of the Control Framework allows you to use handler methods in your

programs to react to events triggered by the control (for example, a double-click).1. Assume you are working with a custom control that has the ABAP wrapper cl_gui_xyz.

DATA my_control TYPE REF TO cl_gui_xyz.

Registering Events with the Control Framework

2. Define an internal table (type cntl_simple_events) and a corresponding work area (type

cntl_simple_event).

DATA events TYPE cntl_simple_events.

DATA wa_events TYPE cntl_simple_event.

3. Now fill the event table with the relevant events. To do this, you need the event ID

(event_id field). You can find this information in the Class Browser by looking at the

attributes of the class cl_gui_xyz. You must also decide whether the event is to be a

system event (appl_event = ' ') or an application event (appl_event = 'X').

wa_events-eventid = event_id.

wa_events-appl_event = appl_event.

APPEND wa_events TO events.

4. You must now send the event table to the frontend so that it knows which events it has to

direct to the backend.

CALL METHOD my_control->set_registered_events

events = events.

To react to the events of you custom control, you must now specify a handler method for it. This

can be either an instance method or a static method

Hope this will help you.

Please revert to me if you need more help in this.

Regards,

Nikhil

[former_member998879]

Hi Nikhil,

thanks for your reply, but i don't understand.

Take for example the report SAPHTML_DEMO1. It simulates a browser into SAP GUI.

My request is:

i load an external html page ( for example www.abcd.xx/page.htm ) which contains some html input field valorized.

Can I pressing a button (application item ) on a GUI ( such as that used for refresh the page,

defined on "user_command_0100" module of the report wih the code HRFR ) get back the value of the html input field?

I hope to have explained it well.

Davide

[former_member998879]

Finally i found a solution!

Simply look this report: SAPHTML_EVENTS_DEMO

It shows how variable are passed from ABAP to HTML and vice versa.

Best regards

Davide

[former_member998879]

Thanks everyone, thanks SDN!

[carlosandres_gonzalez]

Hello, I was looking for an answer and finally I get it.  please see this link

https://wiki.scn.sap.com/wiki/x/GQx2Gg

I hope this helps.

Regards

Carlos Andres Gonzalez