WPF_Practice/PacticeSolution/AddressBook_MVVMSampleV2/ViewModel/AddViewModel.cs

using AddressBook_MVVMSampleV2.Interface;
using AddressBook_MVVMSampleV2.Model;
using ReactiveUI;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reactive;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;

namespace AddressBook_MVVMSampleV2.ViewModel
{
    public class AddViewModel : ReactiveObject
    {
        public enum ViewType
        {
            Add,
            Modify
        }

        public Person PersonData { get; set; }

        public ICommand OkCommand { get; private set; }
        public ICommand CancelCommand { get; private set; }

        public AddViewModel() : this(null, ViewType.Add)
        {
            
        }

        public AddViewModel(Person data = null, ViewType type = ViewType.Add)
        {
            if (type == ViewType.Modify)
                this.Caption = "Modifty information";
            else
                this.Caption = "Add infomation";

            this.PersonData = data;
            this.OkCommand = ReactiveCommand.Create<IDialogView, Unit>(view => FuncOkCommand(view));
            this.CancelCommand = ReactiveCommand.Create<IDialogView, Unit>(view => FuncCancelCommand(view));
        }

        private string _caption;
        public string Caption
        {
            get { return _caption; }
            set { this.RaiseAndSetIfChanged(ref _caption, value); }
        }

        private Unit FuncOkCommand(IDialogView view)
        {
            view.DialogResult = true;
            view.Close();

            return Unit.Default;
        }

        private Unit FuncCancelCommand(IDialogView view)
        {
            view.DialogResult = false;
            view.Close();

            return Unit.Default;
        }
    }
}