Add event for player editing sign (#9300)

Addresses https://github.com/PaperMC/Paper/issues/9293

patches/api/0420-Add-event-for-player-editing-sign.patch

@@ -0,0 +1,81 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: by77er <by77er@gmail.com>
+Date: Sat, 10 Jun 2023 19:06:24 -0400
+Subject: [PATCH] Add event for player editing sign
+
+
+diff --git a/src/main/java/io/papermc/paper/event/player/PlayerOpenSignEvent.java b/src/main/java/io/papermc/paper/event/player/PlayerOpenSignEvent.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..4f81a6dbe6694d40f27445f5d17aed48ad75498a
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/event/player/PlayerOpenSignEvent.java
+@@ -0,0 +1,69 @@
++package io.papermc.paper.event.player;
++
++import org.bukkit.block.Sign;
++import org.bukkit.block.sign.Side;
++import org.bukkit.entity.Player;
++import org.bukkit.event.Cancellable;
++import org.bukkit.event.HandlerList;
++import org.bukkit.event.player.PlayerEvent;
++import org.jetbrains.annotations.NotNull;
++
++/**
++ * Called when a player begins editing a sign's text.
++ * <p>
++ * Cancelling this event stops the sign editing menu from opening.
++ */
++public class PlayerOpenSignEvent extends PlayerEvent implements Cancellable {
++    private static final HandlerList HANDLER_LIST = new HandlerList();
++    private boolean cancel = false;
++    @NotNull private final Sign sign;
++    @NotNull private final Side side;
++
++    public PlayerOpenSignEvent(@NotNull Player editor, @NotNull Sign sign, @NotNull Side side) {
++        super(editor);
++        this.sign = sign;
++        this.side = side;
++    }
++
++    /**
++     * Gets the sign that was clicked.
++     *
++     * @return {@link Sign} that was clicked
++     */
++    @NotNull
++    public Sign getSign() {
++        return sign;
++    }
++
++    /**
++     * Gets which side of the sign was clicked.
++     *
++     * @return {@link Side} that was clicked
++     * @see Sign#getSide(Side)
++     */
++    @NotNull
++    public Side getSide() {
++        return side;
++    }
++
++    @Override
++    public boolean isCancelled() {
++        return cancel;
++    }
++
++    @Override
++    public void setCancelled(boolean cancel) {
++        this.cancel = cancel;
++    }
++
++    @NotNull
++    @Override
++    public HandlerList getHandlers() {
++        return HANDLER_LIST;
++    }
++
++    @NotNull
++    public static HandlerList getHandlerList() {
++        return HANDLER_LIST;
++    }
++}

patches/server/0006-MC-Dev-fixes.patch

@@ -184,6 +184,31 @@ index 4d2d23ff118e9307d50ca2a5194b83450c91a752..ab6dc3449a1d3b7acf1d7bf5ac1c2422
          }));
          this.byName = Maps.newHashMap(builder.build()); // CraftBukkit
          RecipeManager.LOGGER.info("Loaded {} recipes", map1.size());
+diff --git a/src/main/java/net/minecraft/world/level/block/SignBlock.java b/src/main/java/net/minecraft/world/level/block/SignBlock.java
+index 91bb294be2cd8ab3467a62006a5a2751e0bec4ba..5ab7df0042391cb621ed78a187dc20333e344186 100644
+--- a/src/main/java/net/minecraft/world/level/block/SignBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/SignBlock.java
+@@ -76,18 +76,9 @@ public abstract class SignBlock extends BaseEntityBlock implements SimpleWaterlo
+     public InteractionResult use(BlockState state, Level world, BlockPos pos, Player player, InteractionHand hand, BlockHitResult hit) {
+         ItemStack itemStack = player.getItemInHand(hand);
+         Item item = itemStack.getItem();
+-        Item signBlockEntity = itemStack.getItem();
+-        SignApplicator var10000;
+-        if (signBlockEntity instanceof SignApplicator signApplicator) {
+-            var10000 = signApplicator;
+-        } else {
+-            var10000 = null;
+-        }
+-
+-        SignApplicator signApplicator2 = var10000;
++        SignApplicator signApplicator2 = item instanceof SignApplicator signApplicator ? signApplicator : null; // Paper - decompile fixes
+         boolean bl = signApplicator2 != null && player.mayBuild();
+-        BlockEntity bl2 = world.getBlockEntity(pos);
+-        if (bl2 instanceof SignBlockEntity signBlockEntity) {
++        if (world.getBlockEntity(pos) instanceof SignBlockEntity signBlockEntity) { // Paper - decompile fixes
+             if (!world.isClientSide) {
+                 boolean bl2 = signBlockEntity.isFacingFrontText(player);
+                 SignText signText = signBlockEntity.getText(bl2);
 diff --git a/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java b/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java
 index b445f90b70d5a74f5bdc1b081500da4742e1c093..afba733824d84d650e669eda028bf4d28cf006b4 100644
 --- a/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java

patches/server/0980-Add-event-for-player-editing-sign.patch

@@ -0,0 +1,27 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: by77er <by77er@gmail.com>
+Date: Mon, 12 Jun 2023 12:56:46 -0400
+Subject: [PATCH] Add event for player editing sign
+
+
+diff --git a/src/main/java/net/minecraft/world/level/block/SignBlock.java b/src/main/java/net/minecraft/world/level/block/SignBlock.java
+index 5ab7df0042391cb621ed78a187dc20333e344186..f7fda6fb4e908869310c783e68f7ad7025840592 100644
+--- a/src/main/java/net/minecraft/world/level/block/SignBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/SignBlock.java
+@@ -144,6 +144,16 @@ public abstract class SignBlock extends BaseEntityBlock implements SimpleWaterlo
+     }
+ 
+     public void openTextEdit(Player player, SignBlockEntity blockEntity, boolean front) {
++        // Paper start
++        org.bukkit.entity.Player bukkitPlayer = (org.bukkit.entity.Player) player.getBukkitEntity();
++        org.bukkit.block.Block bukkitBlock = org.bukkit.craftbukkit.block.CraftBlock.at(blockEntity.getLevel(), blockEntity.getBlockPos());
++        org.bukkit.craftbukkit.block.CraftSign<?> bukkitSign = (org.bukkit.craftbukkit.block.CraftSign<?>) org.bukkit.craftbukkit.block.CraftBlockStates.getBlockState(bukkitBlock);
++        io.papermc.paper.event.player.PlayerOpenSignEvent event = new io.papermc.paper.event.player.PlayerOpenSignEvent(
++            bukkitPlayer,
++            bukkitSign,
++            front ? org.bukkit.block.sign.Side.FRONT : org.bukkit.block.sign.Side.BACK);
++        if (!event.callEvent()) return;
++        // Paper end
+         blockEntity.setAllowedPlayerEditor(player.getUUID());
+         player.openTextEdit(blockEntity, front);
+     }