package com.lemenzo.gallery.selection;import android.net.Uri;import java.util.*;public final class SelectionController{private final LinkedHashSet<Uri>s=new LinkedHashSet<>();public boolean toggle(Uri u){if(s.remove(u))return false;s.add(u);return true;}public void clear(){s.clear();}public int size(){return s.size();}public List<Uri> items(){return new ArrayList<>(s);}}