From 98b4d2ff882b937a29ee0dbeb2d02ad825da1fb5 Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Thu, 8 Jun 2023 12:19:59 +1000
Subject: [PATCH] SPIGOT-7372, SPIGOT-7373: Signs can't be edited, issues with
 SignChangeEvent

---
 .../level/block/entity/TileEntitySign.patch   | 76 ++++++++++++-------
 .../bukkit/craftbukkit/block/CraftSign.java   |  2 +-
 2 files changed, 49 insertions(+), 29 deletions(-)

diff --git a/nms-patches/net/minecraft/world/level/block/entity/TileEntitySign.patch b/nms-patches/net/minecraft/world/level/block/entity/TileEntitySign.patch
index a0c04cccf..027b472c8 100644
--- a/nms-patches/net/minecraft/world/level/block/entity/TileEntitySign.patch
+++ b/nms-patches/net/minecraft/world/level/block/entity/TileEntitySign.patch
@@ -1,6 +1,6 @@
 --- a/net/minecraft/world/level/block/entity/TileEntitySign.java
 +++ b/net/minecraft/world/level/block/entity/TileEntitySign.java
-@@ -31,7 +31,17 @@
+@@ -31,7 +31,18 @@
  import net.minecraft.world.phys.Vec3D;
  import org.slf4j.Logger;
  
@@ -9,6 +9,7 @@
 +import net.minecraft.EnumChatFormat;
 +import net.minecraft.nbt.NBTBase;
 +import net.minecraft.server.level.EntityPlayer;
++import org.bukkit.block.sign.Side;
 +import org.bukkit.craftbukkit.block.CraftBlock;
 +import org.bukkit.craftbukkit.util.CraftChatMessage;
 +import org.bukkit.entity.Player;
@@ -19,7 +20,7 @@
  
      private static final Logger LOGGER = LogUtils.getLogger();
      private static final int MAX_TEXT_LINE_WIDTH = 90;
-@@ -100,7 +110,7 @@
+@@ -100,7 +111,7 @@
      @Override
      protected void saveAdditional(NBTTagCompound nbttagcompound) {
          super.saveAdditional(nbttagcompound);
@@ -28,7 +29,7 @@
          Logger logger = TileEntitySign.LOGGER;
  
          Objects.requireNonNull(logger);
-@@ -119,7 +129,7 @@
+@@ -119,7 +130,7 @@
      @Override
      public void load(NBTTagCompound nbttagcompound) {
          super.load(nbttagcompound);
@@ -37,7 +38,14 @@
          Logger logger;
  
          if (nbttagcompound.contains("front_text")) {
-@@ -179,6 +189,7 @@
+@@ -173,12 +184,13 @@
+     public void updateSignText(EntityHuman entityhuman, boolean flag, List<FilteredText> list) {
+         if (!this.isWaxed() && entityhuman.getUUID().equals(this.getPlayerWhoMayEdit()) && this.level != null) {
+             this.updateText((signtext) -> {
+-                return this.setMessages(entityhuman, list, signtext);
++                return this.setMessages(entityhuman, list, signtext, flag); // CraftBukkit
+             }, flag);
+             this.setAllowedPlayerEditor((UUID) null);
              this.level.sendBlockUpdated(this.getBlockPos(), this.getBlockState(), this.getBlockState(), 3);
          } else {
              TileEntitySign.LOGGER.warn("Player {} just tried to change non-editable sign", entityhuman.getName().getString());
@@ -45,33 +53,45 @@
          }
      }
  
-@@ -198,6 +209,25 @@
-             } else {
-                 signtext = signtext.setMessage(i, IChatBaseComponent.literal(filteredtext.raw()).setStyle(chatmodifier), IChatBaseComponent.literal(filteredtext.filteredOrEmpty()).setStyle(chatmodifier));
+@@ -188,7 +200,8 @@
+         return this.setText((SignText) unaryoperator.apply(signtext), flag);
+     }
+ 
+-    private SignText setMessages(EntityHuman entityhuman, List<FilteredText> list, SignText signtext) {
++    private SignText setMessages(EntityHuman entityhuman, List<FilteredText> list, SignText signtext, boolean front) { // CraftBukkit
++        SignText originalText = signtext; // CraftBukkit
+         for (int i = 0; i < list.size(); ++i) {
+             FilteredText filteredtext = (FilteredText) list.get(i);
+             ChatModifier chatmodifier = signtext.getMessage(i, entityhuman.isTextFilteringEnabled()).getStyle();
+@@ -200,6 +213,27 @@
              }
-+
-+            // CraftBukkit start
-+            Player player = ((EntityPlayer) entityhuman).getBukkitEntity();
-+            String[] lines = new String[4];
-+
-+            for (int j = 0; j < list.size(); ++j) {
-+                lines[j] = CraftChatMessage.fromComponent(signtext.getMessage(j, entityhuman.isTextFilteringEnabled()));
-+            }
-+
-+            SignChangeEvent event = new SignChangeEvent(CraftBlock.at(this.level, this.worldPosition), player, lines);
-+            entityhuman.level().getCraftServer().getPluginManager().callEvent(event);
-+
-+            if (!event.isCancelled()) {
-+                IChatBaseComponent[] components = org.bukkit.craftbukkit.block.CraftSign.sanitizeLines(event.getLines());
-+                for (int j = 0; j < components.length; j++) {
-+                    signtext = signtext.setMessage(j, components[j]);
-+                }
-+            }
-+            // CraftBukkit end
          }
  
++        // CraftBukkit start
++        Player player = ((EntityPlayer) entityhuman).getBukkitEntity();
++        String[] lines = new String[4];
++
++        for (int j = 0; j < list.size(); ++j) {
++            lines[j] = CraftChatMessage.fromComponent(signtext.getMessage(j, entityhuman.isTextFilteringEnabled()));
++        }
++
++        SignChangeEvent event = new SignChangeEvent(CraftBlock.at(this.level, this.worldPosition), player, lines, (front) ? Side.FRONT : Side.BACK);
++        entityhuman.level().getCraftServer().getPluginManager().callEvent(event);
++
++        if (!event.isCancelled()) {
++            IChatBaseComponent[] components = org.bukkit.craftbukkit.block.CraftSign.sanitizeLines(event.getLines());
++            for (int j = 0; j < components.length; j++) {
++                signtext = signtext.setMessage(j, components[j]);
++            }
++        } else {
++            signtext = originalText;
++        }
++        // CraftBukkit end
++
          return signtext;
-@@ -250,11 +280,37 @@
+     }
+ 
+@@ -250,11 +284,37 @@
          return flag1;
      }
  
@@ -111,7 +131,7 @@
      }
  
      @Override
-@@ -283,7 +339,7 @@
+@@ -283,7 +343,7 @@
  
      private void markUpdated() {
          this.setChanged();
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java b/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
index 581ecce8f..c23ad78fd 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
@@ -109,7 +109,7 @@ public class CraftSign<T extends TileEntitySign> extends CraftBlockEntityState<T
 
         for (int i = 0; i < 4; i++) {
             if (i < lines.length && lines[i] != null) {
-                components[i] = CraftChatMessage.fromString(lines[i])[0];
+                components[i] = IChatBaseComponent.literal("").append(CraftChatMessage.fromString(lines[i])[0]); // SPIGOT-7372: Vanilla wants a literal first
             } else {
                 components[i] = IChatBaseComponent.empty();
             }