1 files changed, 70 insertions, 0 deletions
diff --git a/src/MVPtoMVVM.mvvm/viewmodels/ToDoItemViewModel.cs b/src/MVPtoMVVM.mvvm/viewmodels/ToDoItemViewModel.cs
new file mode 100644
index 0000000..f84b4c2
--- /dev/null
+++ b/src/MVPtoMVVM.mvvm/viewmodels/ToDoItemViewModel.cs
@@ -0,0 +1,70 @@
+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; }
+    }
+}
+\ No newline at end of file