Implemented a reusable button, ascending & descending & allows for mu…

[atreeon]

Hi, I did exactly the same thing a few days ago! Here is another one to choose from.

This version makes a few things type safe, for example the list must implement a new abstract class called Sortable

class Items implements Sortable {
  String name;
  int ram;
  Items(this.name, this.ram);

  Map<String, Comparable> sortableFields() {
    return {'name': name, 'price': price};
  }
}

It also does the asc, desc, sortable fields must implement Comparable, and I created a new button. I also added a couple of dart tests. I've updated the example too so you can see how it is supposed to work