public TodoChangeMessage DeleteTodo(string id)
{
var result = new TodoChangeMessage();
var todo = todoDictionary[id];
if (todo.Parent != null)
{
var oldParent = todo.Parent;
oldParent.DeleteChild(todo);
result.Upsert = result.Upsert.Concat(new[] { TodoConvert.ConvertSingle(oldParent) });
}
else
{
topTodo.Remove(todo);
}
if (todo.HasChildren)
{
foreach (var children in todo.Children)
{
result.Merge(DeleteTodoWithoutParent(children.Id));
}
}
result.Delete = result.Delete.Concat(new[] { TodoConvert.ConvertSingle(todo) });
todoDictionary.Remove(id);
return(result);
}
public TodoChangeMessage DeleteTodo(IEnumerable <TodoData> todo)
{
var result = new TodoChangeMessage();
foreach (var t in todo)
{
result.Merge(DeleteTodo(t.Id));
}
return(result);
}
public TodoChangeMessage UpsertTodoRange(IEnumerable <TodoData> data)
{
var result = new TodoChangeMessage();
foreach (var todo in data)
{
result.Merge(UpsertTodo(todo));
}
return(result);
}
private TodoChangeMessage DeleteTodoWithoutParent(string id)
{
var result = new TodoChangeMessage();
var todo = todoDictionary[id];
if (todo.HasChildren)
{
foreach (var children in todo.Children)
{
result.Merge(DeleteTodoWithoutParent(children.Id));
}
}
result.Delete = result.Delete.Concat(new[] { TodoConvert.ConvertSingle(todo) });
todoDictionary.Remove(id);
return(result);
}
public void OnUpdate(TodoChangeMessage data)
{
manager.UpsertTodoRange(data.Upsert);
manager.DeleteTodo(data.Delete);
ChangeTodo?.Invoke();
}
public void ApplyChange(TodoChangeMessage data)
{
UpsertTodoRange(data.Upsert);
DeleteTodo(data.Delete);
}
public void Merge(TodoChangeMessage message)
{
Upsert = Upsert.Concat(message.Upsert).ToArray();
Delete = Delete.Concat(message.Delete).ToArray();
}
