/// <summary>
/// 处理向此雇员添加新联系人详细信息的操作
/// </summary>
/// <typeparam name="T">要添加的联系人详细信息的类型</typeparam>
private void AddContactDetail <T>() where T : ContactDetail
{
ContactDetail detail = this.unitOfWork.CreateObject <T>();
this.unitOfWork.AddContactDetail(this.Model, detail);
ContactDetailViewModel vm = ContactDetailViewModel.BuildViewModel(detail);
this.ContactDetails.Add(vm);
this.CurrentContactDetail = vm;
}
/// <summary>
/// 初始化 EmployeeViewModel 类的新实例。
/// </summary>
/// <param name="employee">此 ViewModel 基于的基础雇员</param>
/// <param name="managerLookup">要用于查找经理的现有雇员集合</param>
/// <param name="departmentLookup">要用于查找部门的现有部门集合</param>
/// <param name="unitOfWork">用于管理更改的 UnitOfWork</param>
public EmployeeViewModel(Employee employee, ObservableCollection <EmployeeViewModel> managerLookup, ObservableCollection <DepartmentViewModel> departmentLookup, IUnitOfWork unitOfWork)
: base(employee)
{
if (employee == null)
{
throw new ArgumentNullException("employee");
}
this.unitOfWork = unitOfWork;
this.ManagerLookup = managerLookup;
this.DepartmentLookup = departmentLookup;
// 生成联系人详细信息的数据结构
this.ContactDetails = new ObservableCollection <ContactDetailViewModel>();
foreach (var detail in employee.ContactDetails)
{
ContactDetailViewModel vm = ContactDetailViewModel.BuildViewModel(detail);
if (vm != null)
{
this.ContactDetails.Add(vm);
}
}
// 响应从此 ViewModel 外部进行的任何更改
this.DepartmentLookup.CollectionChanged += (sender, e) =>
{
if (e.OldItems != null && e.OldItems.Contains(this.Department))
{
this.Department = null;
}
};
this.ManagerLookup.CollectionChanged += (sender, e) =>
{
if (e.OldItems != null && e.OldItems.Contains(this.Manager))
{
this.Manager = null;
}
};
this.AddEmailAddressCommand = new DelegateCommand((o) => this.AddContactDetail <Email>());
this.AddPhoneNumberCommand = new DelegateCommand((o) => this.AddContactDetail <Phone>());
this.AddAddressCommand = new DelegateCommand((o) => this.AddContactDetail <Address>());
this.DeleteContactDetailCommand = new DelegateCommand((o) => this.DeleteCurrentContactDetail(), (o) => this.CurrentContactDetail != null);
}