FIX #7144 check on close date added for buttons display

modules/cases/detail_index_cases.php

@@ -212,7 +212,7 @@ else
     <input type="hidden" name="id" id="id" value="<?php functions::xecho($case_id);?>" />
     <p align="center">
     <?php
-    if ($core_tools->test_service('update_case', 'cases',false) == 1)
+    if ($core_tools->test_service('update_case', 'cases',false) == 1 && $case_indexes["case_closing_date"] == NULL)
     { ?>
         <input type="submit" class="button"  value="<?php echo _MODIFY_DOC;?>" name="submit_index_doc" />
     <?php
@@ -223,7 +223,7 @@ else
         <input type="button" class="button"  value="<?php echo _JOIN_RES_ON_THIS_CASE;?>" name="join_res" onclick="window.open('<?php echo $_SESSION['config']['businessappurl'];?>index.php?display=true&module=cases&page=search_adv_for_cases&searched_item=res_id&searched_value=<?php functions::xecho($case_indexes['case_id']);?>','', 'scrollbars=yes,menubar=no,toolbar=no,resizable=yes,status=no,width=1020,height=710');"/>
     <?php
     }*/
-    if ($core_tools->test_service('close_case', 'cases',false) == 1)
+    if ($core_tools->test_service('close_case', 'cases',false) == 1 && $case_indexes["case_closing_date"] == NULL)
     { ?>
         <input type="button" class="button"  value="<?php echo _CLOSE_THIS_CASE;?>" name="join_res" onclick="window.location.href='<?php echo $_SESSION['config']['businessappurl'];?>index.php?display=true&module=cases&page=db_close_case&case_id=<?php functions::xecho($case_indexes['case_id']);?>' "/>
     <?php