edit
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103
XLAB2/PrfrvdEditWindowViewModel.cs
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103
XLAB2/PrfrvdEditWindowViewModel.cs
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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 PrfrvdEditWindowViewModel : ObservableObject
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{
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private readonly IReadOnlyList<PrfrvdDirectoryItem> _existingItems;
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private int _activityId;
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private string _validationMessage;
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public PrfrvdEditWindowViewModel(PrfrvdDirectoryItem seed, bool isNew, IReadOnlyList<PrfrvdDirectoryItem> existingItems, PrsnDirectoryService service)
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{
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var source = seed ?? new PrfrvdDirectoryItem();
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_existingItems = existingItems ?? Array.Empty<PrfrvdDirectoryItem>();
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Id = source.Id;
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EmploymentId = source.EmploymentId;
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IsNew = isNew;
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ActivityItems = service.LoadSpvdprReferences();
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ActivityId = source.ActivityId;
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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 int ActivityId
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{
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get { return _activityId; }
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set { SetProperty(ref _activityId, value); }
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}
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public IReadOnlyList<DirectoryLookupItem> ActivityItems { get; private set; }
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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 int EmploymentId { 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 string Title
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{
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get { return IsNew ? "Новый вид деятельности персоны" : "Редактирование вида деятельности персоны"; }
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}
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public string ValidationMessage
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{
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get { return _validationMessage; }
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private set { SetProperty(ref _validationMessage, value); }
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}
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public PrfrvdDirectoryItem ToResult()
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{
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return new PrfrvdDirectoryItem
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{
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ActivityId = ActivityId,
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EmploymentId = EmploymentId,
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Id = Id
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};
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}
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private void Cancel(object parameter)
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{
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RaiseCloseRequested(false);
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}
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private void Confirm(object parameter)
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{
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if (ActivityId <= 0)
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{
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ValidationMessage = "Укажите вид деятельности персонала.";
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return;
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}
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var duplicate = _existingItems.FirstOrDefault(delegate(PrfrvdDirectoryItem item)
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{
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return item != null
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&& item.Id != Id
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&& item.ActivityId == ActivityId;
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});
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if (duplicate != null)
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{
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ValidationMessage = "Выбранный вид деятельности уже существует у этой записи персонала.";
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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 void RaiseCloseRequested(bool? dialogResult)
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{
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var handler = CloseRequested;
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if (handler != null)
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{
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handler(this, dialogResult);
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}
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}
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}
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}
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