Calendar: Ignore event drag&drop in read-only calendars in Year View

src/calendar/gui/comp-util.c

@@ -2557,6 +2557,10 @@ cal_comp_util_move_component_by_days (GtkWindow *parent,
 	g_return_val_if_fail (E_IS_CAL_COMPONENT (in_comp), FALSE);
 	g_return_val_if_fail (days != 0, FALSE);
 
+	/* Silently skip requests for read-only clients */
+	if (e_client_is_readonly (E_CLIENT (client)))
+		return TRUE;
+
 	registry = e_cal_model_get_registry (model);
 
 	if (e_cal_component_has_attendees (in_comp) &&

src/calendar/gui/e-year-view.c

@@ -1438,6 +1438,18 @@ year_view_month_drag_motion_cb (GtkWidget *widget,
 		month != self->priv->drag_month ||
 		year != self->priv->drag_year);
 
+	if (can_drop) {
+		GSList *link;
+
+		can_drop = FALSE;
+
+		for (link = self->priv->drag_data; link && !can_drop; link = g_slist_next (link)) {
+			DragData *dd = link->data;
+
+			can_drop = !e_client_is_readonly (E_CLIENT (dd->client));
+		}
+	}
+
 	gdk_drag_status (context,
 		can_drop ? gdk_drag_context_get_selected_action (context) : 0, time);