Overhauled command handling and suggestion support.

src/bukkit/java/com/sk89q/bukkit/util/CommandInspector.java

@@ -0,0 +1,32 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.bukkit.util;
+
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+
+public interface CommandInspector {
+
+    String getShortText(Command command);
+
+    String getFullText(Command command);
+
+    boolean testPermission(CommandSender sender, Command command);
+}

src/bukkit/java/com/sk89q/bukkit/util/DynamicPluginCommand.java

@@ -26,9 +26,12 @@ import org.bukkit.OfflinePlayer;
 import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
 import org.bukkit.command.PluginIdentifiableCommand;
+import org.bukkit.command.TabCompleter;
 import org.bukkit.plugin.Plugin;
 
 import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
 
 /**
 * An implementation of a dynamically registered {@link org.bukkit.command.Command} attached to a plugin
@@ -76,6 +79,15 @@ public class DynamicPluginCommand extends org.bukkit.command.Command implements
         return owningPlugin;
     }
 
+    @Override
+    public List<String> tabComplete(CommandSender sender, String alias, String[] args) throws IllegalArgumentException {
+        if (owner instanceof TabCompleter) {
+            return ((TabCompleter) owner).onTabComplete(sender, this, alias, args);
+        } else {
+            return Collections.emptyList();
+        }
+    }
+
     @SuppressWarnings("unchecked")
     @Override
     public boolean testPermissionSilent(CommandSender sender) {
@@ -83,7 +95,10 @@ public class DynamicPluginCommand extends org.bukkit.command.Command implements
             return true;
         }
 
-        if (registeredWith instanceof CommandsManager<?>) {
+        if (registeredWith instanceof CommandInspector) {
+            CommandInspector resolver = (CommandInspector) registeredWith;
+            return resolver.testPermission(sender, this);
+        } else if (registeredWith instanceof CommandsManager<?>) {
             try {
                 for (String permission : permissions) {
                     if (((CommandsManager<CommandSender>) registeredWith).hasPermission(sender, permission)) {

src/bukkit/java/com/sk89q/bukkit/util/DynamicPluginCommandHelpTopic.java

@@ -40,55 +40,64 @@ public class DynamicPluginCommandHelpTopic extends HelpTopic {
         this.cmd = cmd;
         this.name = "/" + cmd.getName();
 
-        String fullTextTemp = null;
-        StringBuilder fullText = new StringBuilder();
-
-        if (cmd.getRegisteredWith() instanceof CommandsManager) {
-            Map<String, String> helpText = ((CommandsManager<?>) cmd.getRegisteredWith()).getHelpMessages();
-            final String lookupName = cmd.getName().replaceAll("/", "");
-            if (helpText.containsKey(lookupName)) { // We have full help text for this command
-                fullTextTemp = helpText.get(lookupName);
-            }
-            // No full help text, assemble help text from info
-            helpText = ((CommandsManager<?>) cmd.getRegisteredWith()).getCommands();
-            if (helpText.containsKey(cmd.getName())) {
-                final String shortText = helpText.get(cmd.getName());
-                if (fullTextTemp == null) {
-                    fullTextTemp = this.name + " " + shortText;
-                }
-                this.shortText = shortText;
-            }
+        if (cmd.getRegisteredWith() instanceof CommandInspector) {
+            CommandInspector resolver = (CommandInspector) cmd.getRegisteredWith();
+            this.shortText = resolver.getShortText(cmd);
+            this.fullText = resolver.getFullText(cmd);
         } else {
-            this.shortText = cmd.getDescription();
-        }
+            String fullTextTemp = null;
+            StringBuilder fullText = new StringBuilder();
 
-        // Put the usage in the format: Usage string (newline) Aliases (newline) Help text
-        String[] split = fullTextTemp == null ? new String[2] : fullTextTemp.split("\n", 2);
-        fullText.append(ChatColor.BOLD).append(ChatColor.GOLD).append("Usage: ").append(ChatColor.WHITE);
-        fullText.append(split[0]).append("\n");
-
-        if (cmd.getAliases().size() > 0) {
-            fullText.append(ChatColor.BOLD).append(ChatColor.GOLD).append("Aliases: ").append(ChatColor.WHITE);
-            boolean first = true;
-            for (String alias : cmd.getAliases()) {
-                if (!first) {
-                    fullText.append(", ");
+            if (cmd.getRegisteredWith() instanceof CommandsManager) {
+                Map<String, String> helpText = ((CommandsManager<?>) cmd.getRegisteredWith()).getHelpMessages();
+                final String lookupName = cmd.getName().replaceAll("/", "");
+                if (helpText.containsKey(lookupName)) { // We have full help text for this command
+                    fullTextTemp = helpText.get(lookupName);
                 }
-                fullText.append(alias);
-                first = false;
+                // No full help text, assemble help text from info
+                helpText = ((CommandsManager<?>) cmd.getRegisteredWith()).getCommands();
+                if (helpText.containsKey(cmd.getName())) {
+                    final String shortText = helpText.get(cmd.getName());
+                    if (fullTextTemp == null) {
+                        fullTextTemp = this.name + " " + shortText;
+                    }
+                    this.shortText = shortText;
+                }
+            } else {
+                this.shortText = cmd.getDescription();
             }
-            fullText.append("\n");
+
+            // Put the usage in the format: Usage string (newline) Aliases (newline) Help text
+            String[] split = fullTextTemp == null ? new String[2] : fullTextTemp.split("\n", 2);
+            fullText.append(ChatColor.BOLD).append(ChatColor.GOLD).append("Usage: ").append(ChatColor.WHITE);
+            fullText.append(split[0]).append("\n");
+
+            if (!cmd.getAliases().isEmpty()) {
+                fullText.append(ChatColor.BOLD).append(ChatColor.GOLD).append("Aliases: ").append(ChatColor.WHITE);
+                boolean first = true;
+                for (String alias : cmd.getAliases()) {
+                    if (!first) {
+                        fullText.append(", ");
+                    }
+                    fullText.append(alias);
+                    first = false;
+                }
+                fullText.append("\n");
+            }
+            if (split.length > 1) {
+                fullText.append(split[1]);
+            }
+            this.fullText = fullText.toString();
         }
-        if (split.length > 1) {
-            fullText.append(split[1]);
-        }
-        this.fullText = fullText.toString();
     }
 
     @Override
     @SuppressWarnings("unchecked")
     public boolean canSee(CommandSender player) {
-        if (cmd.getPermissions() != null && cmd.getPermissions().length > 0) {
+        if (cmd.getRegisteredWith() instanceof CommandInspector) {
+            CommandInspector resolver = (CommandInspector) cmd.getRegisteredWith();
+            return resolver.testPermission(player, cmd);
+        } else if (cmd.getPermissions() != null && cmd.getPermissions().length > 0) {
             if (cmd.getRegisteredWith() instanceof CommandsManager) {
                 try {
                     for (String perm : cmd.getPermissions()) {
@@ -123,7 +132,7 @@ public class DynamicPluginCommandHelpTopic extends HelpTopic {
 
     @Override
     public String getFullText(CommandSender forWho) {
-        if (this.fullText == null || this.fullText.length() == 0) {
+        if (this.fullText == null || this.fullText.isEmpty()) {
             return getShortText();
         } else {
             return this.fullText;

src/bukkit/java/com/sk89q/worldedit/bukkit/BukkitCommandInspector.java

@@ -0,0 +1,83 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.bukkit;
+
+import com.sk89q.bukkit.util.CommandInspector;
+import com.sk89q.minecraft.util.commands.CommandLocals;
+import com.sk89q.worldedit.extension.platform.Actor;
+import com.sk89q.worldedit.util.command.CommandMapping;
+import com.sk89q.worldedit.util.command.Description;
+import com.sk89q.worldedit.util.command.Dispatcher;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+
+import java.util.logging.Logger;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+class BukkitCommandInspector implements CommandInspector {
+
+    private static final Logger logger = Logger.getLogger(BukkitCommandInspector.class.getCanonicalName());
+    private final WorldEditPlugin plugin;
+    private final Dispatcher dispatcher;
+
+    BukkitCommandInspector(WorldEditPlugin plugin, Dispatcher dispatcher) {
+        checkNotNull(plugin);
+        checkNotNull(dispatcher);
+        this.plugin = plugin;
+        this.dispatcher = dispatcher;
+    }
+
+    @Override
+    public String getShortText(Command command) {
+        CommandMapping mapping = dispatcher.get(command.getName());
+        if (mapping != null) {
+            return mapping.getDescription().getShortDescription();
+        } else {
+            logger.warning("BukkitCommandInspector doesn't know how about the command '" + command + "'");
+            return "Help text not available";
+        }
+    }
+
+    @Override
+    public String getFullText(Command command) {
+        CommandMapping mapping = dispatcher.get(command.getName());
+        if (mapping != null) {
+            Description description = mapping.getDescription();
+            return "Usage: " + description.getUsage() + (description.getHelp() != null ? "\n" + description.getHelp() : "");
+        } else {
+            logger.warning("BukkitCommandInspector doesn't know how about the command '" + command + "'");
+            return "Help text not available";
+        }
+    }
+
+    @Override
+    public boolean testPermission(CommandSender sender, Command command) {
+        CommandMapping mapping = dispatcher.get(command.getName());
+        if (mapping != null) {
+            CommandLocals locals = new CommandLocals();
+            locals.put(Actor.class, plugin.wrapCommandSender(sender));
+            return mapping.getCallable().testPermission(locals);
+        } else {
+            logger.warning("BukkitCommandInspector doesn't know how about the command '" + command + "'");
+            return false;
+        }
+    }
+}

src/bukkit/java/com/sk89q/worldedit/bukkit/BukkitServerInterface.java

@@ -125,15 +125,14 @@ public class BukkitServerInterface extends ServerInterface {
     @Override
     public void registerCommands(Dispatcher dispatcher) {
         List<CommandInfo> toRegister = new ArrayList<CommandInfo>();
+        BukkitCommandInspector inspector = new BukkitCommandInspector(plugin, dispatcher);
         for (CommandMapping command : dispatcher.getCommands()) {
             Description description = command.getDescription();
             List<String> permissions = description.getPermissions();
             String[] permissionsArray = new String[permissions.size()];
             permissions.toArray(permissionsArray);
 
-            toRegister.add(new CommandInfo(
-                    description.getUsage(), description.getDescription(),
-                    command.getAllAliases(), dispatcher, permissionsArray));
+            toRegister.add(new CommandInfo(description.getUsage(), description.getShortDescription(), command.getAllAliases(), inspector, permissionsArray));
         }
 
         dynamicCommands.register(toRegister);

src/bukkit/java/com/sk89q/worldedit/bukkit/WorldEditListener.java

@@ -96,20 +96,21 @@ public class WorldEditListener implements Listener {
         String[] split = event.getMessage().split(" ");
 
         if (split.length > 0) {
-            split = plugin.getWorldEdit().commandDetection(split);
-            split[0] = "/" + split[0];
+            split[0] = split[0].substring(1);
+            split = plugin.getWorldEdit().getPlatformManager().getCommandManager().commandDetection(split);
         }
 
-        final String newMessage = StringUtil.joinString(split, " ");
+        final String newMessage = "/" + StringUtil.joinString(split, " ");
 
         if (!newMessage.equals(event.getMessage())) {
             event.setMessage(newMessage);
             plugin.getServer().getPluginManager().callEvent(event);
+
             if (!event.isCancelled()) {
-                if (event.getMessage().length() > 0) {
-                    plugin.getServer().dispatchCommand(event.getPlayer(),
-                            event.getMessage().substring(1));
+                if (!event.getMessage().isEmpty()) {
+                    plugin.getServer().dispatchCommand(event.getPlayer(), event.getMessage().substring(1));
                 }
+
                 event.setCancelled(true);
             }
         }

src/bukkit/java/com/sk89q/worldedit/bukkit/WorldEditPlugin.java

@@ -19,6 +19,7 @@
 
 package com.sk89q.worldedit.bukkit;
 
+import com.google.common.base.Joiner;
 import com.sk89q.util.yaml.YAMLProcessor;
 import com.sk89q.wepif.PermissionsResolverManager;
 import com.sk89q.worldedit.*;
@@ -27,17 +28,21 @@ import com.sk89q.worldedit.bukkit.selections.CylinderSelection;
 import com.sk89q.worldedit.bukkit.selections.Polygonal2DSelection;
 import com.sk89q.worldedit.bukkit.selections.Selection;
 import com.sk89q.worldedit.event.platform.CommandEvent;
+import com.sk89q.worldedit.event.platform.CommandSuggestionEvent;
 import com.sk89q.worldedit.event.platform.PlatformReadyEvent;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extent.inventory.BlockBag;
 import com.sk89q.worldedit.regions.*;
 import org.bukkit.World;
+import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
+import org.bukkit.command.TabCompleter;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.java.JavaPlugin;
 
 import java.io.*;
 import java.util.Enumeration;
+import java.util.List;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 import java.util.zip.ZipEntry;
@@ -47,7 +52,7 @@ import java.util.zip.ZipEntry;
  *
  * @author sk89q
  */
-public class WorldEditPlugin extends JavaPlugin {
+public class WorldEditPlugin extends JavaPlugin implements TabCompleter {
 
     /**
      * The name of the CUI's plugin channel registration
@@ -217,19 +222,32 @@ public class WorldEditPlugin extends JavaPlugin {
     }
 
     @Override
-    public boolean onCommand(CommandSender sender, org.bukkit.command.Command cmd, String commandLabel, String[] args) {
+    public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args) {
         // Add the command to the array because the underlying command handling
         // code of WorldEdit expects it
         String[] split = new String[args.length + 1];
         System.arraycopy(args, 0, split, 1, args.length);
-        split[0] = "/" + cmd.getName();
+        split[0] = cmd.getName();
 
-        CommandEvent event = new CommandEvent(wrapCommandSender(sender), split);
+        CommandEvent event = new CommandEvent(wrapCommandSender(sender), Joiner.on(" ").join(split));
         getWorldEdit().getEventBus().post(event);
 
         return true;
     }
 
+    @Override
+    public List<String> onTabComplete(CommandSender sender, Command cmd, String commandLabel, String[] args) {
+        // Add the command to the array because the underlying command handling
+        // code of WorldEdit expects it
+        String[] split = new String[args.length + 1];
+        System.arraycopy(args, 0, split, 1, args.length);
+        split[0] = cmd.getName();
+
+        CommandSuggestionEvent event = new CommandSuggestionEvent(wrapCommandSender(sender), Joiner.on(" ").join(split));
+        getWorldEdit().getEventBus().post(event);
+        return event.getSuggestions();
+    }
+
     /**
      * Gets the session for the player.
      *