[gnome-calendar/gbsneto/recurring-event-editing-fixes: 10/18] event-editor/dialog: Don't show MOD_ALL if schedule changed

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 0c13911ef81cb40b1cad0c680ff6b2f146cc2a9d
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Oct 14 14:12:20 2022 -0300

    event-editor/dialog: Don't show MOD_ALL if schedule changed
    
    We get into seriously tricky situations if we try and change the
    date & time of an event with recurrency, and pass MOD_ALL. That's
    because it is ambioguous *where* the change must be applied.
    
    Don't allow selecting MOD_ALL when the scheduling of the recurrent
    event changes.
    
    Fixes https://gitlab.gnome.org/GNOME/gnome-calendar/-/issues/882

 src/gui/event-editor/gcal-event-editor-dialog.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)
---
diff --git a/src/gui/event-editor/gcal-event-editor-dialog.c b/src/gui/event-editor/gcal-event-editor-dialog.c
index bf2f34a3..e2d0eba2 100644
--- a/src/gui/event-editor/gcal-event-editor-dialog.c
+++ b/src/gui/event-editor/gcal-event-editor-dialog.c
@@ -328,6 +328,7 @@ on_done_button_clicked_cb (GtkButton             *button,
   GcalCalendar *selected_calendar;
   GcalCalendar *calendar;
   GcalManager *manager;
+  gboolean schedule_changed;
   gint i;
 
   manager = gcal_context_get_manager (self->context);
@@ -336,6 +337,7 @@ on_done_button_clicked_cb (GtkButton             *button,
   if (gcal_calendar_is_read_only (calendar))
     GCAL_GOTO (out);
 
+  schedule_changed = FALSE;
   if (!self->event_is_new)
     {
       gboolean anything_changed = FALSE;
@@ -346,8 +348,16 @@ on_done_button_clicked_cb (GtkButton             *button,
 
           section_changed = gcal_event_editor_section_changed (self->sections[i]);
           anything_changed |= section_changed;
+
+          if (self->sections[i] == self->schedule_section)
+            schedule_changed = section_changed;
         }
 
+      GCAL_TRACE_MSG ("Event %s changed: %d, schedule changed: %d",
+                      gcal_event_get_uid (self->event),
+                      anything_changed,
+                      schedule_changed);
+
       if (!anything_changed)
         goto out;
     }
@@ -379,7 +389,7 @@ on_done_button_clicked_cb (GtkButton             *button,
     {
       gcal_utils_ask_recurrence_modification_type (GTK_WIDGET (self),
                                                    self->event,
-                                                   TRUE,
+                                                   !schedule_changed,
                                                    on_ask_recurrence_response_save_cb,
                                                    self);
       return;