This is the TornadoFX take on the Todo MVC application.
MainView encapsulates the Header, TodoList and Footer while the TodoList uses TodoItemFragment for each ListView cell.
The Footer contains three toggle buttons that allow you to select what todo items to show. The selection
represents a predicate set on a SortedFilteredList.
We leverage the built in ListView editing support to toggle between a label and a textfield for the
text of the todo item. When the edit is committed, the underlying SortedFilteredList will update
automatically to reflect the changes. If the edited todo item no longer satisfies the current filtering
predicate, the item will no longer be visible. This all comes for free by leveraging the SortedFilteredList
together with the native ListView editing support.
I opted for using builders together with declarative constructs like removeWhen, toggleClass and whenVisible
to configure actions and changes in UI state. This makes for source code that is easy to read and understand
as well as being a pleasure to maintain. I believe this showcases some of the greatest advantages TornadoFX
offers compared to almost every other UI framework.
I opted for a model with some coupling, by injecting the controller and calling functions instead of using the event bus. If there is any interest I'll create an alternative implementation with events.