RE: SAP HTML Viewer – GET and POST method

      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

      Hi Davide ,   Copy Code 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.   Copy Code 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:…

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      alex Default Asked on November 2, 2016 in user interface-development.
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      1 Answers

        Hi Davide ,

         

        1. CLASS cl_myevent_handler DEFINITION.
        2.  
        3. PUBLIC SECTION.
        4. METHODS: on_sapevent
        5. FOR EVENT sapevent OF cl_gui_html_viewer
        6. IMPORTING action frame getdata postdata query_table.
        7.  
        8. ENDCLASS. “cl_myevent_handler DEFINITION
        9. DATA: evt_receiver TYPE REF TO cl_myevent_handler.

         

        1. IF html_control IS INITIAL.
        2. prog_repid = sy-repid.
        3.  
        4. CREATE OBJECT my_container
        5. EXPORTING
        6. container_name = ‘MAIN’.
        7.  
        8. CREATE OBJECT html_control
        9. EXPORTING
        10. parent = my_container.
        11. IF sy-subrc NE 0.
        12. *
        13. ENDIF.
        14.  
        15. * register event
        16. myevent-eventid = html_control->m_id_sapevent.
        17. myevent-appl_event = ‘x’.
        18. APPEND myevent TO myevent_tab.
        19. CALL METHOD html_control->set_registered_events
        20. EXPORTING
        21. events = myevent_tab.
        22.  
        23. CREATE OBJECT evt_receiver.
        24.  
        25. SET HANDLER evt_receiver->on_sapevent
        26. FOR html_control.
        27.  
        28. DATA: doc_url(80).
        29.  
        30. CALL METHOD html_control->load_html_document
        31. EXPORTING
        32. document_id = ‘ZVTLM1’
        33. IMPORTING
        34. assigned_url = doc_url
        35. EXCEPTIONS
        36. OTHERS = 1.
        37.  
        38. IF sy-subrc EQ 0.
        39. CALL METHOD html_control->show_url
        40. EXPORTING
        41. url = doc_url.
        42. 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

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