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Курнат Андрей
237
XLAB2/PrsnEditWindowViewModel.cs
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237
XLAB2/PrsnEditWindowViewModel.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 PrsnEditWindowViewModel : ObservableObject
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{
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private readonly IReadOnlyList<PrsnDirectoryItem> _existingItems;
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private string _email;
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private string _externalId;
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private string _firstName;
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private string _fullName;
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private string _guid;
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private string _lastName;
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private string _notes;
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private string _patronymic;
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private string _phone;
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private string _validationMessage;
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public PrsnEditWindowViewModel(PrsnDirectoryItem seed, bool isNew, IReadOnlyList<PrsnDirectoryItem> existingItems)
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{
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var source = seed ?? new PrsnDirectoryItem();
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_existingItems = existingItems ?? Array.Empty<PrsnDirectoryItem>();
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Id = source.Id;
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IsNew = isNew;
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FullName = source.FullName ?? string.Empty;
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LastName = source.LastName ?? string.Empty;
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FirstName = source.FirstName ?? string.Empty;
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Patronymic = source.Patronymic ?? string.Empty;
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Phone = source.Phone ?? string.Empty;
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Email = source.Email ?? string.Empty;
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Notes = source.Notes ?? string.Empty;
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Guid = source.Guid ?? string.Empty;
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ExternalId = source.ExternalId ?? 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 string Email
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{
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get { return _email; }
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set { SetProperty(ref _email, value); }
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}
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public string ExternalId
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{
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get { return _externalId; }
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set { SetProperty(ref _externalId, value); }
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}
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public string FirstName
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{
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get { return _firstName; }
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set { SetProperty(ref _firstName, value); }
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}
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public string FullName
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{
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get { return _fullName; }
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set { SetProperty(ref _fullName, value); }
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}
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public string Guid
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{
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get { return _guid; }
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set { SetProperty(ref _guid, value); }
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}
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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 LastName
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{
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get { return _lastName; }
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set { SetProperty(ref _lastName, value); }
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}
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public string Notes
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{
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get { return _notes; }
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set { SetProperty(ref _notes, value); }
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}
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public string Patronymic
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{
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get { return _patronymic; }
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set { SetProperty(ref _patronymic, value); }
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}
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public string Phone
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{
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get { return _phone; }
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set { SetProperty(ref _phone, value); }
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}
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public string Title
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{
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get { return IsNew ? "Новая персона" : "Редактирование 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 PrsnDirectoryItem ToResult()
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{
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return new PrsnDirectoryItem
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{
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Email = NormalizeNullable(Email),
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ExternalId = NormalizeNullable(ExternalId),
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FirstName = NormalizeNullable(FirstName),
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FullName = NormalizeRequired(FullName),
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Guid = NormalizeNullable(Guid),
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Id = Id,
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LastName = NormalizeNullable(LastName),
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Notes = NormalizeNullable(Notes),
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Patronymic = NormalizeNullable(Patronymic),
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Phone = NormalizeNullable(Phone)
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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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var normalizedFullName = NormalizeRequired(FullName);
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var normalizedLastName = NormalizeNullable(LastName);
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var normalizedFirstName = NormalizeNullable(FirstName);
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var normalizedPatronymic = NormalizeNullable(Patronymic);
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var normalizedPhone = NormalizeNullable(Phone);
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var normalizedEmail = NormalizeNullable(Email);
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var normalizedNotes = NormalizeNullable(Notes);
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var normalizedGuid = NormalizeNullable(Guid);
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var normalizedExternalId = NormalizeNullable(ExternalId);
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if (normalizedFullName.Length == 0)
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{
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ValidationMessage = "Укажите ФИО.";
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return;
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}
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if (normalizedFullName.Length > PrsnDirectoryRules.FullNameMaxLength)
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{
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ValidationMessage = string.Format("ФИО не должно превышать {0} символов.", PrsnDirectoryRules.FullNameMaxLength);
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return;
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}
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if (!ValidateMaxLength(normalizedLastName, PrsnDirectoryRules.LastNameMaxLength, "Фамилия")
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|| !ValidateMaxLength(normalizedFirstName, PrsnDirectoryRules.FirstNameMaxLength, "Имя")
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|| !ValidateMaxLength(normalizedPatronymic, PrsnDirectoryRules.PatronymicMaxLength, "Отчество")
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|| !ValidateMaxLength(normalizedPhone, PrsnDirectoryRules.PhoneMaxLength, "Телефон")
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|| !ValidateMaxLength(normalizedEmail, PrsnDirectoryRules.EmailMaxLength, "E-mail")
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|| !ValidateMaxLength(normalizedGuid, PrsnDirectoryRules.GuidMaxLength, "GUID персоны")
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|| !ValidateMaxLength(normalizedExternalId, PrsnDirectoryRules.ExternalIdMaxLength, "Дополнительный идентификатор персоны")
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|| !ValidateMaxLength(normalizedNotes, PrsnDirectoryRules.NotesMaxLength, "Дополнительные сведения о персоне"))
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{
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return;
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}
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var duplicate = _existingItems.FirstOrDefault(delegate(PrsnDirectoryItem item)
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{
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return item != null
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&& item.Id != Id
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&& string.Equals(NormalizeRequired(item.FullName), normalizedFullName, StringComparison.OrdinalIgnoreCase)
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&& string.Equals(NormalizeNullable(item.ExternalId) ?? string.Empty, normalizedExternalId ?? string.Empty, StringComparison.OrdinalIgnoreCase);
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});
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if (duplicate != null)
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{
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ValidationMessage = normalizedExternalId == null
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? string.Format("Персона \"{0}\" без дополнительного идентификатора уже существует в справочнике.", normalizedFullName)
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: string.Format("Персона \"{0}\" с дополнительным идентификатором \"{1}\" уже существует в справочнике.", normalizedFullName, normalizedExternalId);
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return;
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}
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var duplicateGuid = _existingItems.FirstOrDefault(delegate(PrsnDirectoryItem item)
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{
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return item != null
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&& item.Id != Id
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&& !string.IsNullOrWhiteSpace(item.Guid)
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&& normalizedGuid != null
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&& string.Equals(item.Guid.Trim(), normalizedGuid, StringComparison.OrdinalIgnoreCase);
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});
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if (duplicateGuid != null)
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{
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ValidationMessage = string.Format("GUID персоны \"{0}\" уже существует в справочнике.", normalizedGuid);
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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 string NormalizeNullable(string value)
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{
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return string.IsNullOrWhiteSpace(value) ? null : value.Trim();
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}
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private string NormalizeRequired(string value)
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{
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return string.IsNullOrWhiteSpace(value) ? string.Empty : value.Trim();
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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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private bool ValidateMaxLength(string value, int maxLength, string fieldName)
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{
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if (value != null && value.Length > maxLength)
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{
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ValidationMessage = string.Format("{0} не должно превышать {1} символов.", fieldName, maxLength);
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return false;
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}
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return true;
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}
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}
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}
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