How to get caller form name ?

This is an example for enabling and disabling of button1 and button2  on basis of caller form

Public void buttonEnable()

{

    UserGroupList           userGroupList,userGroupList1;

    ProjParameters          projParameters;

    formRun                    caller;

    ;

    caller = element.args().caller(); // caller form

    if(caller.args().name() == formStr(ProjTable)) // caller form name

    {

        projParameters = ProjParameters::find();

        

       // Checking that the CurUserId() is there of one particular group or not

        Select userGroupList where userGroupList.UserId == curUserId()

                                   && userGroupList.groupId == projParameters.SalesAcceptanceChangeOrder;

        if(userGroupList)

        {

            Button1.enabled(true);

        }

        else

        {

            Button1.enabled(false);

        }

        Select userGroupList1 where userGroupList1.UserId == curUserId()

                                   && userGroupList1.groupId == projParameters.CommercialAcceptanceChangeOrder;

        if(userGroupList1)

        {

            Button2.enabled(true);

        }

        else

        {

            Button2.enabled(false);

        }

    }

    if(caller.args().name() == formStr(ProjQuoteTable))

    {

        projParameters = ProjParameters::find();

        Select userGroupList where userGroupList.UserId == curUserId()

                                   && userGroupList.groupId == projParameters.SalesAcceptanceQtn;

        if(userGroupList)

        {

            Button1.enabled(true);

        }

        else

        {

            Button1.enabled(false);

        }

        Select userGroupList1 where userGroupList1.UserId == curUserId()

                                   && userGroupList1.groupId == projParameters.CommercialAcceptanceQtn;

        if(userGroupList1)

        {

            Button2.enabled(true);

        }

        else

        {

            Button2.enabled(false);

        }

    }

}