CC-5638: Shows become unlinked when moving the end time back

Disabled linked checkbox field in show form while the show is playing
Added a warning message if the user attempts to change this value
Update .po and .mo files with the warning message string

airtime_mvc/application/controllers/LocaleController.php

@@ -177,6 +177,7 @@ class LocaleController extends Zend_Controller_Action
             //preferences/support-setting.js
             "Image must be one of jpg, jpeg, png, or gif" => _("Image must be one of jpg, jpeg, png, or gif"),
             //schedule/add-show.js
+            "Warning: You cannot change this field while the show is currently playing" => _("Warning: You cannot change this field while the show is currently playing"),
             "No result found" => _("No result found"),
             "This follows the same security pattern for the shows: only users assigned to the show can connect." => _("This follows the same security pattern for the shows: only users assigned to the show can connect."),
             "Specify custom authentication which will work only for this show." => _("Specify custom authentication which will work only for this show."),

airtime_mvc/application/services/ShowFormService.php

@@ -257,12 +257,16 @@ class Application_Service_ShowFormService
             $form->getElement('add_show_linked')->setOptions(array('disabled' => true));
         }
 
-        /* Because live editing of a linked show is disabled, we will disable
-         * the linking option if the current show is being edited. We don't
-         * want the user to suddenly not be able to edit the current show
+        /* Because live editing of a linked show is disabled, we will make
+         * the linking option readonly if the current show is being edited. We
+         * dont' want the user to suddenly not be able to edit the current show
+         * 
+         * Readonly does not work with checkboxes but we can't disable it
+         * because the value won't get posted. In add-show.js we stop the
+         * onclick event from firing by returning false
          */
         if ($this->hasShowStarted($nextFutureShowStart)) {
-            $form->getElement('add_show_linked')->setOptions(array('disabled' => true));
+            $form->getElement('add_show_linked')->setAttrib('readonly', 'readonly');
         }
     }
 

airtime_mvc/public/js/airtime/schedule/add-show.js

@@ -264,6 +264,13 @@ function setAddShowEvents(form) {
     });
 
     form.find("#add_show_linked").click(function(){
+        if ($(this).attr("readonly")) {
+            if ($("#show-link-readonly-warning").length === 0) {
+                $(this).parent().after("<ul id='show-link-readonly-warning' class='errors'><li>"+$.i18n._("Warning: You cannot change this field while the show is currently playing")+"</li></ul>");
+            }
+            return false;
+        }
+
         if (!$(this).attr("checked") && $("#show-link-warning").length === 0) {
             $(this).parent().after("<ul id='show-link-warning' class='errors'><li>"+$.i18n._("Warning: Shows cannot be re-linked")+"</li></ul>");
         }