RETURN statement "kills" my BSP event handling

Hi,
I've gone through [this|Downloaded Excel data is shown using Chinese characters (!); and everything went just fine. At the end of that code, to make my BSP react and finally display that popup, I had to insert a RETURN statement, and by doing so, the BSP virtually "dies": stops reacting to any ohter event, and finally makes me close the browser. This is the relevant section of my code:
cFolders
OnInputProcessing event
response->set_data( data = lv_xstring ).
navigation->response_complete( ). " signal that response is complete
return.
Why is that happening? What could I do to avoid that behavior, and keep working my custom pushbutton functionality?
Thanks in advance, hope someone could help me.
Regards,
Federico.

Hi Frederico,
I think there is a misunderstanding, what you want your application to do and what response_complete is used for.
Do I understand your requirement right: You want a popup-window with excel content and in background-window the standard application should run unchanged?
That doesn't work with response_complete in OnInputProcessing, because the statement is used to prevent creating the default response of a page in onLayout method
If you use RETURN, the processing of your page is stopped and the response consists only of the content you filled in but not of any default page layout => excel appears but your application seems to be dead
If you do not use RETURN, you navigate to another page (statement cl_cfx_util_ui=>navigate). As navigation in BSPs is realized by a browser redirect, a complete new request-response-zyklus is started => no excel appears, your response seems to be overwritten
Possible solutions are:
1. Instead of sending the response object back to the client, store it in the server-cache (method SERVER_CACHE_UPLOAD of class CL_HTTP_SERVER) in OnInputProcessing and open a new browser window with url of object in server-cache.
OR
2. Open a new browser window with url of a new custom bsp page and generate the response in onInitialization of the new custom page.
Search the forum, you'll find a lot of examples how to use the server-cache and how to open a new window with javacript.
Anyway: read also SAP help to understand the control flow of BSPs: [http://help.sap.com/saphelp_nw70/helpdata/en/a3/4b9afa7aa511d5992e00508b6b8b11/frameset.htm]
Best regards,
CW

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Please clarify:
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What would you suggest the proper syntax for a function fcn_newwindow() call from a pl/sql javascript block that differs from
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More generally, what I'm trying to figure out is under what conditions javascript is executed, if ever, in the pl/sql of a button (either the submit or custom event handler, depending on the button).
I've seen lots of posts asking how to do a simple htp.p('alert("THIS IS TROUBLE")') ; in a pl/sql event handler for a button on a form, but no description of how this can be done successfully.
In addition to alerts, in my case, I'd like to call a javascript fcn from a pl/sql event handle that would pass a URL (e.g., http://www.oracle.com) where the javascript fcn executed
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Its clear in the PL/SQL of a button, you can effect form components since p_session..set_target & p_session.get_target set or get the contents of form components.
So to see if javascript ever works, I tried to focus on something simple that only had to set what amounts to an enviromental variable when we returned to the form after a post. I chose to try to change the html value of TARGET from javascript in the PL/SQL button because it doesn't need to be implemented until we finish the post and return to the form.
So I focused on a hack, setting this.form.TARGET='_blank' in the on_click event handler that forced every subsequent URL call or refresh of the form to be a new window. I then wanted to turn off opening new windows once I'd opened the URL call in a new window by setting TARGET='' in the portal form. I can achieve what I want by coding this.form.TARGET='' in the javascript (on_focus, on_change, or on_mousedown, ...) of every form component that might refresh the form. However, that is a ridiculous hack when a simple htp.p('<script>') ; htp.p('this.form.target=""') ; htp.p('</script>') ; at the end of the button's pl/sql event handle should do the same thing reliably if javascript ever works in the pl/sql event handler.
If we didn't have access to form components through p_session calls, I'd assume it was a scope issue (what is available from the pl/sql event handler). But unless my syntax is just off, when, if ever, can javascript be used in a portal form's pl/sql event handler for a button?
if I code a javascript funtion in the forms' pl/sql before displaying form:
htp.p('<script language="JavaScript">') ;
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but from the same button's pl/sql submit event handler this call doesn't work: htp.p('fcn_new_window("http://www.oracle.com")')
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I can probably figure out hacks to make things work the way I need, but executing javascript from pl/sql event handlers seems to be the expected way to affect portal html pages (forms, reports, ...) and it seems not to work as expected. I don't feel I should have to implement hacks for something as simple as calling a javascript function from pl/sql when almost every example I've found in metalink or the forums or Oracle Press's "portal bible" suggests using javascript from pl/sql via the utility htp.p() to effect web page components in portal.
My TAR on the subject, while still open, returned the result basically: "We can reproduce your situation. Everything looks okay to us, but we can't explain how to use javascript where you want or point you to any documentation that would solve your problem or expain why it should not work the way you want it to. We don't feel its a technical issue. Why don't you post the problem on the portal applications forum."
I'm hoping I'm just missing something fundamental and everything will work if I implement it a little differently. So if anyone sees my error, please let me know.
by the way, not sure this is germain, but in reference to your comment:
"redirections in pl/sql procedures give a peculiar result. in a pl/sql procedure, usually, portals give the last redirection statement and ignore anything else coming after it."
if I try to raise an alert:
htp.p('alert("you screwed up")');
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"Jurgen Beli?n" <[email protected]> wrote in
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>I am writing a custom function that will add a component
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>However,
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// 1.
//     a. Project->Add Reference...
//     b. select the "SAP Business One UI API 2005" From the COM folder
// 2.
//      a. Project->Properties...
//      b. choose Configuration Properties folder (place the arrow on Debugging)
//      c. place the following connection string in the 'Command line arguments' field
// 0030002C0030002C00530041005000420044005F00440061007400650076002C0050004C006F006D0056004900490056
using System;
using System.Windows.Forms;
class CatchingEvents {
    // This parameter will use us to manipulate the
    // SAP Business One Application
    private SAPbouiCOM.Application SBO_Application;
    private void SetApplication() {
        // Use an SboGuiApi object to establish connection
        // with the SAP Business One application and return an
        // initialized appliction object
        SAPbouiCOM.SboGuiApi SboGuiApi = null;
        string sConnectionString = null;
        SboGuiApi = new SAPbouiCOM.SboGuiApi();
        // by following the steps specified above, the following
        // statment should be suficient for either development or run mode
        sConnectionString = System.Convert.ToString( Environment.GetCommandLineArgs().GetValue( 1 ) );
        // connect to a running SBO Application
        SboGuiApi.Connect( sConnectionString );
        // get an initialized application object
        SBO_Application = SboGuiApi.GetApplication( -1 );
    public CatchingEvents() {
        // set SBO_Application with an initialized application object
        SetApplication();
        // events handled by SBO_Application_AppEvent
        SBO_Application.AppEvent += new SAPbouiCOM._IApplicationEvents_AppEventEventHandler( SBO_Application_AppEvent );
        // events handled by SBO_Application_MenuEvent
        SBO_Application.MenuEvent += new SAPbouiCOM._IApplicationEvents_MenuEventEventHandler( SBO_Application_MenuEvent );
        // events handled by SBO_Application_ItemEvent
        SBO_Application.ItemEvent += new SAPbouiCOM._IApplicationEvents_ItemEventEventHandler( SBO_Application_ItemEvent );
        // events handled by SBO_Application_ProgressBarEvent
        SBO_Application.ProgressBarEvent += new SAPbouiCOM._IApplicationEvents_ProgressBarEventEventHandler( SBO_Application_ProgressBarEvent );
        // events handled by SBO_Application_StatusBarEvent
        SBO_Application.StatusBarEvent += new SAPbouiCOM._IApplicationEvents_StatusBarEventEventHandler( SBO_Application_StatusBarEvent );
    private void SBO_Application_AppEvent( SAPbouiCOM.BoAppEventTypes EventType ) {
        // the following are the events sent by the application
        // (Ignore aet_ServerTermination)
        // in order to implement your own code upon each of the events
        // place you code instead of the matching message box statement
        switch ( EventType ) {
            case SAPbouiCOM.BoAppEventTypes.aet_ShutDown:
                SBO_Application.MessageBox( "A Shut Down Event has been caught" + Environment.NewLine + "Terminating Add On...", 1, "Ok", "", "" );
                // Take care of terminating your AddOn application
                System.Windows.Forms.Application.Exit();
                break;
            case SAPbouiCOM.BoAppEventTypes.aet_CompanyChanged:
                SBO_Application.MessageBox( "A Company Change Event has been caught", 1, "Ok", "", "" );
                // Check the new company name, if your add on was not meant for
                // the new company terminate your AddOn
                //     If SBO_Application.Company.Name Is Not "Company1" then
                //          Close
                //     End If
                break;
            case SAPbouiCOM.BoAppEventTypes.aet_LanguageChanged:
                SBO_Application.MessageBox( "A Languge Change Event has been caught", 1, "Ok", "", "" );
                break;
    private void SBO_Application_MenuEvent( ref SAPbouiCOM.MenuEvent pVal, out bool BubbleEvent ) {
        // in order to activate your own forms instead of SAP Business One system forms
        // process the menu event by your self
        // change BubbleEvent to False so that SAP Business One won't process it
        BubbleEvent = true;
        if ( pVal.BeforeAction == true ) {
            SBO_Application.SetStatusBarMessage( "Menu item: " + pVal.MenuUID + " sent an event BEFORE SAP Business One processes it.", SAPbouiCOM.BoMessageTime.bmt_Long, true );
            // to stop SAP Business One from processing this event
            // unmark the following statement
            // BubbleEvent = False
        else {
            SBO_Application.SetStatusBarMessage( "Menu item: " + pVal.MenuUID + " sent an event AFTER SAP Business One processes it.", SAPbouiCOM.BoMessageTime.bmt_Long, true );
    private void SBO_Application_ItemEvent( string FormUID, ref SAPbouiCOM.ItemEvent pVal, out bool BubbleEvent ) {
        // BubbleEvent sets the behavior of SAP Business One.
        // False means that the application will not continue processing this event.
        BubbleEvent = true;
        if ( pVal.FormType != 0 ) {
            // the message box form type is 0
            // I chose not to deal with events triggered by a message box
            // every event will open a message box with the event
            // name and the form UID how sent it
            SAPbouiCOM.BoEventTypes EventEnum = 0;
            EventEnum = pVal.EventType;
            // To prevent an endless loop of MessageBoxes,
            // we'll not notify et_FORM_ACTIVATE and et_FORM_LOAD events
            if ( ( EventEnum != SAPbouiCOM.BoEventTypes.et_FORM_ACTIVATE ) & ( EventEnum != SAPbouiCOM.BoEventTypes.et_FORM_LOAD ) ) {
                SBO_Application.MessageBox( "An " + EventEnum.ToString() + " has been sent by a form with the unique ID: " + FormUID, 1, "Ok", "", "" );
    private void SBO_Application_ProgressBarEvent( ref SAPbouiCOM.ProgressBarEvent pVal, out bool BubbleEvent) {
        SAPbouiCOM.BoProgressBarEventTypes EventEnum = 0;
        EventEnum = pVal.EventType;
        BubbleEvent = true;
        SBO_Application.MessageBox( "The event " + EventEnum.ToString() + " has been sent", 1, "Ok", "", "" );
    private void SBO_Application_StatusBarEvent( string Text, SAPbouiCOM.BoStatusBarMessageType MessageType ) {
        SBO_Application.MessageBox( @"Status bar event with message: """ + Text + @""" has been sent", 1, "Ok", "", "" );
Regards,
Jay.

RETURN statement "kills" my BSP event handling

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