[evolution] I#1749 - ECalComponentPreview: Show component (non-public) classification

[Milan Crha <mcrha src gnome org>]

commit b5eef5cff5319686fbf9663e098b20caf853186e
Author: Milan Crha <mcrha redhat com>
Date:   Mon Jan 3 18:55:55 2022 +0100

    I#1749 - ECalComponentPreview: Show component (non-public) classification
    
    Closes https://gitlab.gnome.org/GNOME/evolution/-/issues/1749

 src/calendar/gui/e-cal-component-preview.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
---
diff --git a/src/calendar/gui/e-cal-component-preview.c b/src/calendar/gui/e-cal-component-preview.c
index c50371e33a..e2f841b876 100644
--- a/src/calendar/gui/e-cal-component-preview.c
+++ b/src/calendar/gui/e-cal-component-preview.c
@@ -376,6 +376,26 @@ cal_component_preview_write_html (ECalComponentPreview *preview,
                cal_component_preview_add_table_line (buffer, _("Priority:"), tmp);
        }
 
+       prop = i_cal_component_get_first_property (icomp, I_CAL_CLASS_PROPERTY);
+       if (prop) {
+               switch (i_cal_property_get_class (prop)) {
+               case I_CAL_CLASS_PRIVATE:
+                       tmp = _("Private");
+                       break;
+               case I_CAL_CLASS_CONFIDENTIAL:
+                       tmp = _("Confidential");
+                       break;
+               default:
+                       tmp = NULL;
+                       break;
+               }
+
+               if (tmp)
+                       cal_component_preview_add_table_line (buffer, _("Classification:"), tmp);
+
+               g_object_unref (prop);
+       }
+
        if (e_cal_component_has_organizer (comp)) {
                ECalComponentOrganizer *organizer;