Add Argument.tabCompletes to Supplier for dynamic use

SpigotCore_Main/src/de/steamwar/command/Argument.java

@@ -22,10 +22,12 @@
 package de.steamwar.command;
 
 import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
 
 import java.util.*;
 import java.util.function.Function;
 import java.util.function.Predicate;
+import java.util.function.Supplier;
 import java.util.stream.Collectors;
 
 public class Argument<T> {
@@ -36,18 +38,18 @@ public class Argument<T> {
     public static final Argument<Float> FLOAT = new Argument<>(ArgumentType.FLOAT, f -> true);
     public static final Argument<Double> DOUBLE = new Argument<>(ArgumentType.DOUBLE, d -> true);
     public static final Argument<String> STRING = new Argument<>(ArgumentType.STRING, string -> true);
-    public static final Argument<String> PLAYER = new Argument<>(ArgumentType.STRING, string -> Bukkit.getPlayer(string) == null, Bukkit::getPlayer);
+    public static final Argument<String> PLAYER = new Argument<>(ArgumentType.STRING, string -> Bukkit.getPlayer(string) == null, Bukkit::getPlayer, () -> Bukkit.getOnlinePlayers().stream().map(Player::getName).toArray(String[]::new));
 
     private ArgumentType<T> argumentType;
     private Predicate<T> constraint;
-    private String[] tabCompletes;
+    private Supplier<String[]> tabCompletes;
     private Function<T, ?> valueMapper;
 
     public Argument(ArgumentType<T> argumentType, Predicate<T> constraint, String... tabCompletes) {
-        this(argumentType, constraint, o -> o, tabCompletes);
+        this(argumentType, constraint, o -> o, () -> tabCompletes);
     }
 
-    public <M> Argument(ArgumentType<T> argumentType, Predicate<T> constraint, Function<T, M> valueMapper, String... tabCompletes) {
+    public <M> Argument(ArgumentType<T> argumentType, Predicate<T> constraint, Function<T, M> valueMapper, Supplier<String[]> tabCompletes) {
         this.argumentType = argumentType;
         this.constraint = constraint;
         this.valueMapper = valueMapper;
@@ -76,7 +78,7 @@ public class Argument<T> {
                 // Check number constraints if needed
                 if (argumentType.number && !constraint.test(argumentMapped)) return Optional.empty();
             }
-            List<String> strings = Arrays.stream(tabCompletes).filter(t -> t.startsWith(s)).collect(Collectors.toList());
+            List<String> strings = Arrays.stream(tabCompletes.get()).filter(t -> t.startsWith(s)).collect(Collectors.toList());
             if (strings.isEmpty()) strings.add(s);
             return Optional.of(strings);
         } catch (NumberFormatException e) {
@@ -156,7 +158,7 @@ public class Argument<T> {
     @Override
     public String toString() {
         return "Argument{" +
-                "tabCompletes=" + Arrays.toString(tabCompletes) +
+                "tabCompletes=" + Arrays.toString(tabCompletes.get()) +
                 '}';
     }