Tab complete /p list

Bukkit/src/main/java/com/plotsquared/bukkit/managers/BukkitWorldManager.java

@@ -36,6 +36,9 @@ import org.jetbrains.annotations.Nullable;
 
 import java.io.File;
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
 
 /**
  * Default Bukkit world manager. It will handle world creation by
@@ -76,4 +79,13 @@ public class BukkitWorldManager implements PlatformWorldManager<World> {
         return "bukkit";
     }
 
+    @Override public Collection<String> getWorlds() {
+        final List<World> worlds = Bukkit.getWorlds();
+        final List<String> worldNames = new ArrayList<>();
+        for (final World world : worlds) {
+            worldNames.add(world.getName());
+        }
+        return worldNames;
+    }
+
 }

Core/src/main/java/com/plotsquared/core/command/ListCmd.java

@@ -42,6 +42,7 @@ import com.plotsquared.core.util.MathMan;
 import com.plotsquared.core.util.Permissions;
 import com.plotsquared.core.util.StringComparison;
 import com.plotsquared.core.util.StringMan;
+import com.plotsquared.core.util.TabCompletions;
 import com.plotsquared.core.util.query.PlotQuery;
 import com.plotsquared.core.util.query.SortingStrategy;
 import com.plotsquared.core.util.task.RunnableVal3;
@@ -49,12 +50,16 @@ import com.plotsquared.core.uuid.UUIDMapping;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.LinkedList;
 import java.util.List;
 import java.util.UUID;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 import java.util.function.Consumer;
+import java.util.stream.Collectors;
 
 @CommandDeclaration(command = "list",
     aliases = {"l", "find", "search"},
@@ -397,4 +402,48 @@ public class ListCmd extends SubCommand {
             }, "/plot list " + args[0], Captions.PLOT_LIST_HEADER_PAGED.getTranslated());
     }
 
+    @Override public Collection<Command> tab(PlotPlayer player, String[] args, boolean space) {
+        final List<String> completions = new LinkedList<>();
+        if (EconHandler.manager != null && Permissions
+            .hasPermission(player, Captions.PERMISSION_LIST_FOR_SALE)) {
+            completions.add("forsale");
+        }
+        if (Permissions.hasPermission(player, Captions.PERMISSION_LIST_MINE)) {
+            completions.add("mine");
+        }
+        if (Permissions.hasPermission(player, Captions.PERMISSION_LIST_SHARED)) {
+            completions.add("shared");
+        }
+        if (Permissions.hasPermission(player, Captions.PERMISSION_LIST_WORLD)) {
+            completions.addAll(PlotSquared.imp().getWorldManager().getWorlds());
+        }
+        if (Permissions.hasPermission(player, Captions.PERMISSION_LIST_TOP)) {
+            completions.add("top");
+        }
+        if (Permissions.hasPermission(player, Captions.PERMISSION_LIST_ALL)) {
+            completions.add("all");
+        }
+        if (Permissions.hasPermission(player, Captions.PERMISSION_LIST_UNOWNED)) {
+            completions.add("unowned");
+        }
+        if (Permissions.hasPermission(player, Captions.PERMISSION_LIST_DONE)) {
+            completions.add("done");
+        }
+        if (Permissions.hasPermission(player, Captions.PERMISSION_LIST_EXPIRED)) {
+            completions.add("expired");
+        }
+
+        final List<Command> commands = new LinkedList<>();
+        commands.addAll(completions.stream()
+            .filter(completion -> completion.toLowerCase().startsWith(args[0].toLowerCase()))
+            .map(completion -> new Command(null, true, completion, "", RequiredType.NONE, CommandCategory.TELEPORT) {})
+            .collect(Collectors.toList()));
+
+        if (Permissions.hasPermission(player, Captions.PERMISSION_LIST_PLAYER) && args[0].length() > 0) {
+            commands.addAll(TabCompletions.completePlayers(args[0], Collections.emptyList()));
+        }
+
+        return commands;
+    }
+
 }

Core/src/main/java/com/plotsquared/core/util/PlatformWorldManager.java

@@ -28,6 +28,8 @@ package com.plotsquared.core.util;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.util.Collection;
+
 /**
  * This class should be implemented by each platform to allow PlotSquared to interact
  * with the world management solution used on the server.
@@ -62,4 +64,11 @@ public interface PlatformWorldManager<T> {
      */
     String getName();
 
+    /**
+     * Get the names of all worlds on the server
+     *
+     * @return Worlds
+     */
+    Collection<String> getWorlds();
+
 }