When filtering through cards how are you keeping track of and resetting the filtered cards

Question

I am trying to implement a feature where multiple filters can be added at a time, and it works to the point of I can filter multiple times but when I get rid of a filter it doesn't add the cards back in. Any ideas on how I can do that?

Answer 1

I used an arraylist of cards and cleared the list every time a new search was done, resetting it to the visible list to the full collection of cards and then taking from that list what I need according to the new filters. Rather than altering the old list, I just kinda started from scratch.

Answer 2

I used an observable list of filter objects. Whenever a filter is added or removed the event triggers and it calls the method that filters and displays cards.

Answer 3

The way I worked through it was with an observable list, as it is an Array list that is notified when changed are made and keeps it up to date.

Answer 4

You can add Visible flag to Card Class. Then an applyFilter method that sets this flag based on the filter, then a removeFilter method updates the visibility based on the remaining filters. Then getVisibleCards method returns the currently visible cards.

Answer 5

We have a global List that we use in a method that .collects() a list of filtered cards and observes the changes by setting the new value of List. Ours might be a little different because we use checkboxes that return a boolean value, so that makes it a little more straightforward to see if we should be adding the cards back into the list if the checkbox has been unchecked (false)