Show tolltip on empty callsign

application/views/visitor/layout/footer.php

@@ -23,7 +23,8 @@
 </script>
 
     <script type="text/javascript" src="<?php echo base_url();?>assets/js/leaflet/L.Maidenhead.js"></script>
-    <script id="leafembed" type="text/javascript" src="<?php echo base_url();?>assets/js/leaflet/leafembed.js" tileUrl="<?php echo $this->optionslib->get_option('map_tile_server');?>"></script>    <script type="text/javascript">
+    <script id="leafembed" type="text/javascript" src="<?php echo base_url();?>assets/js/leaflet/leafembed.js" tileUrl="<?php echo $this->optionslib->get_option('map_tile_server');?>"></script>
+    <script type="text/javascript">
       $(function () {
         $('[data-toggle="tooltip"]').tooltip()
       });
@@ -257,6 +258,7 @@
             function validateForm() {
                 let x = document.forms["searchForm"]["callsign"].value;
                 if (x == "") {
+                    $('#searchcall').tooltip('show')
                     return false;
                 }
             }

application/views/visitor/layout/header.php

@@ -78,7 +78,7 @@
 			$this->CI =& get_instance();
 			if ($this->CI->public_search_enabled($slug) || $this->session->userdata('user_type') >= 2) { ?>
 				<form method="post" name="searchForm" action="<?php echo site_url('visitor/search'); ?>" onsubmit="return validateForm()" class="form-inline">
-				<input class="form-control mr-sm-2" id="searchcall" type="search" name="callsign" placeholder="<?php echo lang('menu_search_text'); ?>" <?php if (isset($callsign) && $callsign != '') { echo 'value="'.strtoupper($callsign).'"'; } ?> aria-label="Search">
+				<input class="form-control mr-sm-2" id="searchcall" type="search" name="callsign" placeholder="<?php echo lang('menu_search_text'); ?>" <?php if (isset($callsign) && $callsign != '') { echo 'value="'.strtoupper($callsign).'"'; } ?> aria-label="Search" data-toogle="tooltip" data-placement="bottom" data-original-title="Please enter a callsign!">
 					<input type="hidden" name="public_slug" value="<?php echo $slug; ?>">
 					<button class="btn btn-outline-success my-2 my-sm-0" type="submit"><i class="fas fa-search"></i> <?php echo lang('menu_search_button'); ?></button>
 				</form>