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Catch JavaScript events in CL_GUI_HTML_VIEWER

0 Kudos
2,329

Hi together,

I use the CL_GUI_HTML_VIEWER in an application and try to catch the onKeyPress event.

The Template works fine, when it is loaded directly in the IE. When I load it in the

CL_GUI_HTML_VIEWER the event is not raised.

Does anyone have an idea?

Thanks in advance...Thomas

1 ACCEPTED SOLUTION

Former Member
0 Kudos
346

Hi Thomas

   The class CL_GUI_HTML_VIEWER does not respond html events but only the ON_SAPEVENT event which responds to html SUBMIT or POST events.

So try to do something as following also for more you can see the SAPHTML_EVENTS_DEMO program.

the class handler for SAPEVENT of your html viewer

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.

CLASS CL_MYEVENT_HANDLER IMPLEMENTATION.

 
METHOD ON_SAPEVENT.

   
CLEAR EDACTION.
    EDACTION      
= ACTION.

    CASE ACTION.
     
WHEN 'onkeypress'.  

      your code here

      WHEN OTHERS.
   
ENDCASE.
 
ENDMETHOD.ENDCLASS.

*******An HTML template

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

<script type="text/javascript">

function displayResult()

    {

    var x;

    if(window.event) // IE8 and earlier

        {

        x=event.keyCode;

        }

    else if(event.which) // IE9/Firefox/Chrome/Opera/Safari

        {

        x=event.which;

        }

    keychar=String.fromCharCode(x);

    var FormKeyPress        = document.createElement("form");

       FormKeyPress.action = "SAPEVENT:onkeypress";

       FormKeyPress.method = "post";

       FormKeyPress.id     = "FormKeyPress";

    var Keychar          = document.createElement("input");

       Keychar.type     = "hidden";

       Keychar.name     = "keychar";

       Keychar.id       = "keychar";

       Keychar.value    = keychar;

       Keychar.readonly = "readonly";   

    FormKeyPress.appendChild(Keychar);

    var fDiv=document.getElementById("formDiv");

     fDiv.appendChild(FormKeyPress );

     FormKeyPress.submit();

    }

    </script>

    <title></title>

  </head>

  <body>

    <p>

      A function is triggered when the user presses a key in the input field.

      The function alerts the key pressed.

    </p>

    <form>

      <input type="text" onkeypress="displayResult()">

    </form>

    <div id="formDiv" style="height:1%;top:00px"></div>

  </body>

</html>

regrards

2 REPLIES 2

Former Member
0 Kudos
347

Hi Thomas

   The class CL_GUI_HTML_VIEWER does not respond html events but only the ON_SAPEVENT event which responds to html SUBMIT or POST events.

So try to do something as following also for more you can see the SAPHTML_EVENTS_DEMO program.

the class handler for SAPEVENT of your html viewer

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.

CLASS CL_MYEVENT_HANDLER IMPLEMENTATION.

 
METHOD ON_SAPEVENT.

   
CLEAR EDACTION.
    EDACTION      
= ACTION.

    CASE ACTION.
     
WHEN 'onkeypress'.  

      your code here

      WHEN OTHERS.
   
ENDCASE.
 
ENDMETHOD.ENDCLASS.

*******An HTML template

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

<script type="text/javascript">

function displayResult()

    {

    var x;

    if(window.event) // IE8 and earlier

        {

        x=event.keyCode;

        }

    else if(event.which) // IE9/Firefox/Chrome/Opera/Safari

        {

        x=event.which;

        }

    keychar=String.fromCharCode(x);

    var FormKeyPress        = document.createElement("form");

       FormKeyPress.action = "SAPEVENT:onkeypress";

       FormKeyPress.method = "post";

       FormKeyPress.id     = "FormKeyPress";

    var Keychar          = document.createElement("input");

       Keychar.type     = "hidden";

       Keychar.name     = "keychar";

       Keychar.id       = "keychar";

       Keychar.value    = keychar;

       Keychar.readonly = "readonly";   

    FormKeyPress.appendChild(Keychar);

    var fDiv=document.getElementById("formDiv");

     fDiv.appendChild(FormKeyPress );

     FormKeyPress.submit();

    }

    </script>

    <title></title>

  </head>

  <body>

    <p>

      A function is triggered when the user presses a key in the input field.

      The function alerts the key pressed.

    </p>

    <form>

      <input type="text" onkeypress="displayResult()">

    </form>

    <div id="formDiv" style="height:1%;top:00px"></div>

  </body>

</html>

regrards

0 Kudos
346

Hi George,

thanks a lot for your quick response and for this hint, it works...

Thomas