From 406f308cc92378a7812ea429f414a6f770798564 Mon Sep 17 00:00:00 2001
From: joe <burtonjae@hotmail.co.uk>
Date: Thu, 7 Mar 2024 21:19:51 +0000
Subject: [PATCH] Remember the old max chat length before changing it, fixing
 VFP incompatibility

---
 .../clientcommands/mixin/MixinChatScreen.java     | 15 +++++++++++++--
 src/main/resources/clientcommands.aw              |  2 ++
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/main/java/net/earthcomputer/clientcommands/mixin/MixinChatScreen.java b/src/main/java/net/earthcomputer/clientcommands/mixin/MixinChatScreen.java
index 86c43e4e4..f391aaf7b 100644
--- a/src/main/java/net/earthcomputer/clientcommands/mixin/MixinChatScreen.java
+++ b/src/main/java/net/earthcomputer/clientcommands/mixin/MixinChatScreen.java
@@ -4,8 +4,10 @@
 import net.earthcomputer.clientcommands.command.VarCommand;
 import net.minecraft.client.gui.components.EditBox;
 import net.minecraft.client.gui.screens.ChatScreen;
+import org.jetbrains.annotations.Nullable;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.ModifyVariable;
@@ -13,9 +15,12 @@
 
 @Mixin(ChatScreen.class)
 public class MixinChatScreen {
-
     @Shadow protected EditBox input;
 
+    @Unique
+    @Nullable
+    private Integer oldMaxLength = null;
+
     // replace the text before the Fabric Command API executes it,
     // but ensure the message is added to the history in its raw form.
     @ModifyVariable(method = "handleChatInput", at = @At(value = "INVOKE", target = "Ljava/lang/String;startsWith(Ljava/lang/String;)Z", remap = false), argsOnly = true)
@@ -30,10 +35,16 @@ private String onHandleChatInput(String message) {
     @Inject(method = "onEdited", at = @At("HEAD"))
     private void onEdited(String value, CallbackInfo ci) {
         if (value.startsWith("/") && ClientCommands.isClientcommandsCommand(value.substring(1).split(" ")[0])) {
+            if (oldMaxLength == null) {
+                oldMaxLength = input.maxLength;
+            }
             input.setMaxLength(32767);
         } else {
             // TODO: what if other mods try to do the same thing?
-            input.setMaxLength(256);
+            if (oldMaxLength != null) {
+                input.setMaxLength(oldMaxLength);
+                oldMaxLength = null;
+            }
         }
     }
 }
diff --git a/src/main/resources/clientcommands.aw b/src/main/resources/clientcommands.aw
index c2bb3f5b4..3ebc898e2 100644
--- a/src/main/resources/clientcommands.aw
+++ b/src/main/resources/clientcommands.aw
@@ -13,6 +13,8 @@ accessible method net/minecraft/client/Minecraft openChatScreen (Ljava/lang/Stri
 accessible method net/minecraft/network/chat/HoverEvent <init> (Lnet/minecraft/network/chat/HoverEvent$TypedHoverEvent;)V
 accessible class net/minecraft/network/chat/HoverEvent$TypedHoverEvent
 
+accessible field net/minecraft/client/gui/components/EditBox maxLength I
+
 accessible field net/minecraft/network/ConnectionProtocol flows Ljava/util/Map;
 accessible field net/minecraft/network/ConnectionProtocol$CodecData packetSet Lnet/minecraft/network/ConnectionProtocol$PacketSet;
 accessible field net/minecraft/network/ConnectionProtocol$PacketSet classToId Lit/unimi/dsi/fastutil/objects/Object2IntMap;