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Encapsulation of grouped account selection events and collective events.

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This commit is contained in:
Burak Kaan Köse
2024-12-29 19:37:36 +01:00
parent eef2ee1baa
commit f7bfbd5080
16 changed files with 242 additions and 49 deletions
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82
Wino.Calendar/Services/AccountCalendarStateService.cs
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@@ -1,13 +1,91 @@
using System.Collections.ObjectModel;
using System;
using System.Collections.ObjectModel;
using System.Linq;
using CommunityToolkit.Mvvm.ComponentModel;
using Wino.Calendar.ViewModels.Data;
using Wino.Calendar.ViewModels.Interfaces;
namespace Wino.Calendar.Services
{
/// <summary>
/// Encapsulated state manager for collectively managing the state of account calendars.
/// Callers must react to the events to update their state only from this service.
/// </summary>
public partial class AccountCalendarStateService : ObservableObject, IAccountCalendarStateService
{
public event EventHandler<GroupedAccountCalendarViewModel> CollectiveAccountGroupSelectionStateChanged;
public event EventHandler<AccountCalendarViewModel> AccountCalendarSelectionStateChanged;
[ObservableProperty]
private ObservableCollection<GroupedAccountCalendarViewModel> _groupedAccountCalendars = new ObservableCollection<GroupedAccountCalendarViewModel>();
private ReadOnlyObservableCollection<GroupedAccountCalendarViewModel> groupedAccountCalendars;
private ObservableCollection<GroupedAccountCalendarViewModel> _internalGroupedAccountCalendars = new ObservableCollection<GroupedAccountCalendarViewModel>();
public AccountCalendarStateService()
{
GroupedAccountCalendars = new ReadOnlyObservableCollection<GroupedAccountCalendarViewModel>(_internalGroupedAccountCalendars);
}
private void SingleGroupCalendarCollectiveStateChanged(object sender, EventArgs e)
=> CollectiveAccountGroupSelectionStateChanged?.Invoke(this, sender as GroupedAccountCalendarViewModel);
private void SingleCalendarSelectionStateChanged(object sender, AccountCalendarViewModel e)
=> AccountCalendarSelectionStateChanged?.Invoke(this, e);
public void AddGroupedAccountCalendar(GroupedAccountCalendarViewModel groupedAccountCalendar)
{
groupedAccountCalendar.CalendarSelectionStateChanged += SingleCalendarSelectionStateChanged;
groupedAccountCalendar.CollectiveSelectionStateChanged += SingleGroupCalendarCollectiveStateChanged;
_internalGroupedAccountCalendars.Add(groupedAccountCalendar);
}
public void RemoveGroupedAccountCalendar(GroupedAccountCalendarViewModel groupedAccountCalendar)
{
groupedAccountCalendar.CalendarSelectionStateChanged -= SingleCalendarSelectionStateChanged;
groupedAccountCalendar.CollectiveSelectionStateChanged -= SingleGroupCalendarCollectiveStateChanged;
_internalGroupedAccountCalendars.Remove(groupedAccountCalendar);
}
public void ClearGroupedAccountCalendar()
{
foreach (var groupedAccountCalendar in _internalGroupedAccountCalendars)
{
RemoveGroupedAccountCalendar(groupedAccountCalendar);
}
}
public void AddAccountCalendar(AccountCalendarViewModel accountCalendar)
{
// Find the group that this calendar belongs to.
var group = _internalGroupedAccountCalendars.FirstOrDefault(g => g.Account.Id == accountCalendar.Account.Id);
if (group == null)
{
// If the group doesn't exist, create it.
group = new GroupedAccountCalendarViewModel(accountCalendar.Account, new[] { accountCalendar });
AddGroupedAccountCalendar(group);
}
else
{
group.AccountCalendars.Add(accountCalendar);
}
}
public void RemoveAccountCalendar(AccountCalendarViewModel accountCalendar)
{
var group = _internalGroupedAccountCalendars.FirstOrDefault(g => g.Account.Id == accountCalendar.Account.Id);
// We don't expect but just in case.
if (group == null) return;
group.AccountCalendars.Remove(accountCalendar);
if (group.AccountCalendars.Count == 0)
{
RemoveGroupedAccountCalendar(group);
}
}
}
}