New event: BrigadierSuggestionsEvent to have more control on 1.13+ suggestions

api/src/main/java/net/md_5/bungee/api/event/BrigadierSuggestionsEvent.java

@@ -0,0 +1,40 @@
+package net.md_5.bungee.api.event;
+
+import com.mojang.brigadier.suggestion.Suggestions;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
+import net.md_5.bungee.api.connection.Connection;
+import net.md_5.bungee.api.plugin.Cancellable;
+
+/**
+ * Event called when an 1.13+ player uses tab completion.
+ * This event is fired after {@link TabCompleteEvent}.
+ */
+@Data
+@ToString(callSuper = true)
+@EqualsAndHashCode(callSuper = true)
+public class BrigadierSuggestionsEvent extends TargetedEvent implements Cancellable
+{
+
+    /**
+     * Cancelled state.
+     */
+    private boolean cancelled;
+    /**
+     * The message the player has already entered.
+     */
+    private final String cursor;
+    /**
+     * The suggestions that will be sent to the client. If this list is empty,
+     * the request will be forwarded to the server.
+     */
+    private Suggestions suggestions;
+
+    public BrigadierSuggestionsEvent(Connection sender, Connection receiver, String cursor, Suggestions suggestions)
+    {
+        super( sender, receiver );
+        this.cursor = cursor;
+        this.suggestions = suggestions;
+    }
+}

api/src/main/java/net/md_5/bungee/api/event/TabCompleteEvent.java

@@ -9,6 +9,8 @@ import net.md_5.bungee.api.plugin.Cancellable;
 
 /**
  * Event called when a player uses tab completion.
+ * For 1.13+ clients, you can also use {@link BrigadierSuggestionsEvent} for
+ * more control of the suggestions.
  */
 @Data
 @ToString(callSuper = true)