Added a config option to entirely disable server side cui.

worldedit-bukkit/src/main/resources/defaults/config.yml

@@ -143,3 +143,4 @@ no-double-slash: false
 no-op-permissions: false
 debug: false
 show-help-on-first-use: true
+server-side-cui: true

worldedit-core/src/main/java/com/sk89q/worldedit/LocalConfiguration.java

@@ -134,6 +134,7 @@ public abstract class LocalConfiguration {
     public int butcherDefaultRadius = -1;
     public int butcherMaxRadius = -1;
     public boolean allowSymlinks = false;
+    public boolean serverSideCUI = true;
 
     /**
      * Load the configuration.

worldedit-core/src/main/java/com/sk89q/worldedit/LocalSession.java

@@ -636,6 +636,10 @@ public class LocalSession {
             return; // This is for players only.
         }
 
+        if (!config.serverSideCUI) {
+            return; // Disabled in config.
+        }
+
         Player player = (Player) actor;
 
         if (!useServerCUI || hasCUISupport) {

worldedit-core/src/main/java/com/sk89q/worldedit/command/GeneralCommands.java

@@ -31,6 +31,7 @@ import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.entity.Player;
+import com.sk89q.worldedit.extension.input.DisallowedUsageException;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.util.command.parametric.Optional;
@@ -124,6 +125,9 @@ public class GeneralCommands {
     @CommandPermissions("worldedit.drawsel")
     public void drawSelection(Player player, LocalSession session, CommandContext args) throws WorldEditException {
 
+        if (!WorldEdit.getInstance().getConfiguration().serverSideCUI) {
+            throw new DisallowedUsageException("This functionality is disabled in the configuration!");
+        }
         String newState = args.getString(0, null);
         if (session.shouldUseServerCUI()) {
             if ("on".equals(newState)) {

worldedit-core/src/main/java/com/sk89q/worldedit/util/PropertiesConfiguration.java

@@ -114,6 +114,7 @@ public class PropertiesConfiguration extends LocalConfiguration {
         butcherDefaultRadius = getInt("butcher-default-radius", butcherDefaultRadius);
         butcherMaxRadius = getInt("butcher-max-radius", butcherMaxRadius);
         allowSymlinks = getBool("allow-symbolic-links", allowSymlinks);
+        serverSideCUI = getBool("server-side-cui", serverSideCUI);
 
         LocalSession.MAX_HISTORY_SIZE = Math.max(15, getInt("history-size", 15));
 

worldedit-core/src/main/java/com/sk89q/worldedit/util/YAMLConfiguration.java

@@ -112,6 +112,7 @@ public class YAMLConfiguration extends LocalConfiguration {
         SessionManager.EXPIRATION_GRACE = config.getInt("history.expiration", 10) * 60 * 1000;
 
         showHelpInfo = config.getBoolean("show-help-on-first-use", true);
+        serverSideCUI = config.getBoolean("server-side-cui", true);
 
         String snapshotsDir = config.getString("snapshots.directory", "");
         if (!snapshotsDir.isEmpty()) {

worldedit-sponge/src/main/java/com/sk89q/worldedit/sponge/config/ConfigurateConfiguration.java

@@ -120,6 +120,7 @@ public class ConfigurateConfiguration extends LocalConfiguration {
         SessionManager.EXPIRATION_GRACE = node.getNode("history", "expiration").getInt(10) * 60 * 1000;
 
         showHelpInfo = node.getNode("show-help-on-first-use").getBoolean(true);
+        serverSideCUI = node.getNode("server-side-cui").getBoolean(true);
 
         String snapshotsDir = node.getNode("snapshots", "directory").getString("");
         if (!snapshotsDir.isEmpty()) {