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using System;
using System.ComponentModel;
using System.Windows.Input;
using MVPtoMVVM.domain;
using MVPtoMVVM.repositories;
namespace MVPtoMVVM.mvvm.viewmodels
{
public class TodoItemViewModel : INotifyPropertyChanged
{
private readonly ITodoItemRepository todoItemRepository;
private Synchronizer<TodoItemViewModel> updater;
public TodoItemViewModel(ITodoItemRepository todoItemRepository)
{
this.todoItemRepository = todoItemRepository;
SaveCommand = new SimpleCommand(Save, CanSave);
DeleteCommand = new SimpleCommand(Delete);
updater = new Synchronizer<TodoItemViewModel>(PropertyChanged);
}
private void Delete()
{
todoItemRepository.Delete(Id);
Parent.TodoItems.Remove(this);
Parent.Update(x => x.TodoItems);
}
private bool CanSave()
{
return !string.IsNullOrEmpty(Description) && DueDate >= DateTime.Today;
}
private void Save()
{
var todoItem = todoItemRepository.Get(Id) ?? new TodoItem();
todoItem.DueDate = DueDate;
todoItem.Description = Description;
todoItemRepository.Save(todoItem);
}
public event PropertyChangedEventHandler PropertyChanged = (o,e)=> { };
public int Id { get; set; }
private string description;
public string Description
{
get { return description; }
set
{
description = value;
updater.Update(x => x.Description);
SaveCommand.Changed();
}
}
private DateTime dueDate;
public DateTime DueDate
{
get { return dueDate; }
set { dueDate = value;
updater.Update(x => x.DueDate);
SaveCommand.Changed();
}
}
public IObservableCommand SaveCommand { get; set; }
public IObservableCommand DeleteCommand { get; set; }
public MainWindowViewModel Parent { get; set; }
}
}
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