void OnAddItemClicked (object sender, EventArgs e)
{
var todoItem = new TodoItem () {
ID = Guid.NewGuid ().ToString (),
Notes = string.Empty
};
var todoPage = new TodoItemPage ();
todoPage.BindingContext = todoItem;
Navigation.PushAsync (todoPage);
}
List<Amazon.SimpleDB.Model.Attribute> ToSimpleDBAttributes (TodoItem item)
{
return new List<Amazon.SimpleDB.Model.Attribute> () {
new Amazon.SimpleDB.Model.Attribute () {
Name = "Name",
Value = item.Name
},
new Amazon.SimpleDB.Model.Attribute () {
Name = "Notes",
Value = item.Notes
},
new Amazon.SimpleDB.Model.Attribute () {
Name = "Done",
Value = item.Done.ToString ()
},
};
}
List<ReplaceableAttribute> ToSimpleDBReplaceableAttributes (TodoItem item)
{
return new List<ReplaceableAttribute> () {
new ReplaceableAttribute () {
Name = "Name",
Value = item.Name,
Replace = true
},
new ReplaceableAttribute () {
Name = "Notes",
Value = item.Notes,
Replace = true
},
new ReplaceableAttribute () {
Name = "Done",
Value = item.Done.ToString (),
Replace = true
}
};
}
List<Amazon.SimpleDB.Model.Attribute> ToSimpleDBAttributes (TodoItem item)
{
return new List<Amazon.SimpleDB.Model.Attribute> () {
new Amazon.SimpleDB.Model.Attribute () {
Name = "Name",
Value = item.Name
},
new Amazon.SimpleDB.Model.Attribute () {
Name = "Notes",
Value = item.Notes
},
new Amazon.SimpleDB.Model.Attribute () {
Name = "Done",
Value = item.Done.ToString ()
},
// The users email address is used to identify data in SimpleDB
new Amazon.SimpleDB.Model.Attribute () {
Name = "User",
Value = App.User.Email
}
};
}
public Task SaveTaskAsync(TodoItem item)
{
return storage.SaveTodoItemAsync(item);
}
public Task DeleteTaskAsync(TodoItem item)
{
return storage.DeleteTodoItemAsync(item);
}
public async Task DeleteTodoItemAsync (TodoItem todoItem)
{
try {
var attributeList = ToSimpleDBAttributes (todoItem);
var request = new DeleteAttributesRequest () {
DomainName = tableName,
ItemName = todoItem.ID,
Attributes = attributeList
};
await client.DeleteAttributesAsync (request);
} catch (Exception ex) {
Debug.WriteLine (@" ERROR {0}", ex.Message);
}
}
TodoItem FromSimpleDBAttributes (List<Amazon.SimpleDB.Model.Attribute> attributeList, string id)
{
var todoItem = new TodoItem ();
todoItem.ID = id;
todoItem.Name = attributeList.Where (attr => attr.Name == "Name").FirstOrDefault ().Value;
todoItem.Notes = attributeList.Where (attr => attr.Name == "Notes").FirstOrDefault ().Value;
todoItem.Done = Convert.ToBoolean (attributeList.Where (attr => attr.Name == "Done").FirstOrDefault ().Value);
return todoItem;
}
