Calendar: Fixed failing refresh when creating new assignments

prs.desktop/Components/Calendar/Calendar.xaml.cs

@@ -3,7 +3,6 @@ using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.ComponentModel;
 using System.Diagnostics.CodeAnalysis;
-using System.Globalization;
 using System.Linq;
 using System.Windows;
 using System.Windows.Controls;
@@ -17,10 +16,6 @@ using InABox.Core;
 using InABox.DynamicGrid;
 using InABox.Wpf;
 using InABox.WPF;
-using Org.BouncyCastle.Asn1.X509.Qualified;
-using PRS.Shared;
-using Syncfusion.SfSkinManager;
-using Syncfusion.UI.Xaml.Scheduler;
 using Selection = InABox.Core.Selection;
 using SelectionChangedEventArgs = System.Windows.Controls.SelectionChangedEventArgs;
 
@@ -602,6 +597,8 @@ namespace PRSDesktop
 
         // Populated on each Refresh
         private List<Assignment> _assignments = [];
+
+        private ObservableCollection<ICalendarAppointment> _appointments = new();
         
         private bool bColumnsLoaded;
         
@@ -776,15 +773,15 @@ namespace PRSDesktop
                 
                 LoadBackground();
 
-                var appointments = new List<ICalendarAppointment>();
-                LoadStandardLeaves(appointments);
-                LoadLeaveRequests(appointments);
-                LoadAssignments(appointments);
+                _appointments.Clear();
+                LoadStandardLeaves(_appointments);
+                LoadLeaveRequests(_appointments);
+                LoadAssignments(_appointments);
  
                 try
                 {
                     CalendarControl.Dates = CoreUtils.Range(startDate, endDate, x => x.AddDays(1));
-                    CalendarControl.ItemsSource = appointments;
+                    CalendarControl.ItemsSource = _appointments;
                 }
                 catch (Exception e)
                 {
@@ -932,7 +929,7 @@ namespace PRSDesktop
             CalendarControl.Regions = regions;
         }
         
-        private void LoadStandardLeaves(List<ICalendarAppointment> appointments)
+        private void LoadStandardLeaves(IList<ICalendarAppointment> appointments)
         {
             for (var date = StartDate; date < EndDate; date = date.AddDays(1))
             {
@@ -962,7 +959,7 @@ namespace PRSDesktop
             }
         }
 
-        private void LoadLeaveRequests(List<ICalendarAppointment> appointments)
+        private void LoadLeaveRequests(IList<ICalendarAppointment> appointments)
         {
             for (var date = StartDate; date < EndDate; date = date.AddDays(1))
             {
@@ -985,13 +982,16 @@ namespace PRSDesktop
                         var start = (date.Date == leave.From.Date) ? leave.FromTime : TimeSpan.FromSeconds(0);
                         var finish = (date.Date == leave.To.Date) ? leave.ToTime : TimeSpan.FromDays(1).Subtract(TimeSpan.FromSeconds(1));
                         var blocks = roster.GetBlocks(date, start, finish);
-                        appointments.AddRange(blocks.Select(x => new LeaveRequestAppointment(leave, employee, x)));
+                        foreach(var block in blocks)
+                        {
+                            appointments.Add(new LeaveRequestAppointment(leave, employee, block));
+                        }
                     }
                 }
             }
         }
         
-        private void LoadAssignment(Assignment assignment, List<ICalendarAppointment> appointments)
+        private void LoadAssignment(Assignment assignment, IList<ICalendarAppointment> appointments)
         {
             var employee = _employees.FirstOrDefault(x => x.ID == assignment.EmployeeLink.ID);
             if (employee is null) return;
@@ -1004,7 +1004,7 @@ namespace PRSDesktop
             appointments.Add(model);
         }
 
-        private void LoadAssignments(List<ICalendarAppointment> appointments)
+        private void LoadAssignments(IList<ICalendarAppointment> appointments)
         {
             foreach (var assignment in _assignments)
                 LoadAssignment(assignment, appointments);
@@ -1212,7 +1212,8 @@ namespace PRSDesktop
             
             if ((args.Status == CalendarHandledStatus.Handled) || CheckGrid(ref ag).EditItems([ass]))
             {
-                // TODO: UpdateAssignment(ass);
+                _assignments.Add(ass);
+                LoadAssignment(ass, _appointments);
                 _copiedmodel = null;
             }