100 lines
4.5 KiB
C#
100 lines
4.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Windows.Input;
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namespace XLAB2
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{
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internal sealed class TprmcpEditWindowViewModel : ObservableObject
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{
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private readonly IReadOnlyList<TprmcpDirectoryItem> _existingItems;
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private int _cycleId;
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private string _comment;
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private int _groupId;
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private string _periodMonthsText;
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private string _validationMessage;
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public TprmcpEditWindowViewModel(TprmcpDirectoryItem seed, bool isNew, IReadOnlyList<TprmcpDirectoryItem> existingItems, TypeSizeDirectoryService service)
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{
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var source = seed ?? new TprmcpDirectoryItem();
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_existingItems = existingItems ?? Array.Empty<TprmcpDirectoryItem>();
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Id = source.Id;
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TypeSizeId = source.TypeSizeId;
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IsNew = isNew;
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CycleItems = new[] { new DirectoryLookupItem { Id = 0, Name = string.Empty } }.Concat(service.LoadSpvdmcReferences()).ToList();
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GroupItems = new[] { new DirectoryLookupItem { Id = 0, Name = string.Empty } }.Concat(service.LoadGrsiReferences()).ToList();
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CycleId = source.CycleId ?? 0;
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GroupId = source.GroupId ?? 0;
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PeriodMonthsText = source.PeriodMonths.ToString();
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Comment = source.Comment ?? string.Empty;
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ConfirmCommand = new RelayCommand(Confirm);
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CancelCommand = new RelayCommand(Cancel);
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}
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public event EventHandler<bool?> CloseRequested;
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public ICommand CancelCommand { get; private set; }
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public ICommand ConfirmCommand { get; private set; }
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public IReadOnlyList<DirectoryLookupItem> CycleItems { get; private set; }
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public IReadOnlyList<DirectoryLookupItem> GroupItems { get; private set; }
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public int Id { get; private set; }
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public bool IsNew { get; private set; }
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public int TypeSizeId { get; private set; }
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public int CycleId { get { return _cycleId; } set { SetProperty(ref _cycleId, value); } }
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public int GroupId { get { return _groupId; } set { SetProperty(ref _groupId, value); } }
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public string PeriodMonthsText { get { return _periodMonthsText; } set { SetProperty(ref _periodMonthsText, value); } }
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public string Comment { get { return _comment; } set { SetProperty(ref _comment, value); } }
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public string Title { get { return IsNew ? "Новый период МК" : "Редактирование периода МК"; } }
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public string ValidationMessage { get { return _validationMessage; } private set { SetProperty(ref _validationMessage, value); } }
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public TprmcpDirectoryItem ToResult()
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{
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return new TprmcpDirectoryItem
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{
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Id = Id,
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TypeSizeId = TypeSizeId,
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CycleId = CycleId > 0 ? (int?)CycleId : null,
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GroupId = GroupId > 0 ? (int?)GroupId : null,
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PeriodMonths = int.Parse(PeriodMonthsText.Trim()),
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Comment = Normalize(Comment)
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};
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}
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private void Cancel(object parameter) { RaiseCloseRequested(false); }
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private void Confirm(object parameter)
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{
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int periodMonths;
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if (!int.TryParse((PeriodMonthsText ?? string.Empty).Trim(), out periodMonths))
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{
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ValidationMessage = "Период МК должен быть целым числом.";
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return;
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}
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var duplicate = _existingItems.FirstOrDefault(delegate(TprmcpDirectoryItem item)
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{
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return item != null
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&& item.Id != Id
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&& item.CycleId == (CycleId > 0 ? (int?)CycleId : null)
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&& item.GroupId == (GroupId > 0 ? (int?)GroupId : null)
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&& item.PeriodMonths == periodMonths;
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});
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if (duplicate != null)
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{
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ValidationMessage = "Такой цикл и период МК уже существуют для выбранного типоразмера.";
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return;
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}
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ValidationMessage = string.Empty;
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RaiseCloseRequested(true);
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}
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private static string Normalize(string value) { return string.IsNullOrWhiteSpace(value) ? string.Empty : value.Trim(); }
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private void RaiseCloseRequested(bool? dialogResult)
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{
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var handler = CloseRequested;
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if (handler != null) handler(this, dialogResult);
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}
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}
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}
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