Introduce edit-sign flag

Bukkit/src/main/java/com/plotsquared/bukkit/BukkitPlatform.java

@@ -37,6 +37,7 @@
 import com.plotsquared.bukkit.listener.EntitySpawnListener;
 import com.plotsquared.bukkit.listener.PaperListener;
 import com.plotsquared.bukkit.listener.PlayerEventListener;
+import com.plotsquared.bukkit.listener.PlayerEventListener1201;
 import com.plotsquared.bukkit.listener.ProjectileEventListener;
 import com.plotsquared.bukkit.listener.ServerListener;
 import com.plotsquared.bukkit.listener.SingleWorldListener;
@@ -359,6 +360,9 @@ public void onEnable() {
 
         if (Settings.Enabled_Components.EVENTS) {
             getServer().getPluginManager().registerEvents(injector().getInstance(PlayerEventListener.class), this);
+            if ((serverVersion()[1] == 20 && serverVersion()[2] >= 1) || serverVersion()[1] > 20) {
+                getServer().getPluginManager().registerEvents(injector().getInstance(PlayerEventListener1201.class), this);
+            }
             getServer().getPluginManager().registerEvents(injector().getInstance(BlockEventListener.class), this);
             if (serverVersion()[1] >= 17) {
                 getServer().getPluginManager().registerEvents(injector().getInstance(BlockEventListener117.class), this);

Bukkit/src/main/java/com/plotsquared/bukkit/listener/PlayerEventListener1201.java

@@ -0,0 +1,63 @@
+/*
+ * PlotSquared, a land and world management plugin for Minecraft.
+ * Copyright (C) IntellectualSites <https://intellectualsites.com>
+ * Copyright (C) IntellectualSites team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.plotsquared.bukkit.listener;
+
+import com.plotsquared.bukkit.util.BukkitUtil;
+import com.plotsquared.core.location.Location;
+import com.plotsquared.core.plot.Plot;
+import com.plotsquared.core.plot.PlotArea;
+import com.plotsquared.core.plot.flag.implementations.EditSignFlag;
+import com.plotsquared.core.util.PlotFlagUtil;
+import org.bukkit.block.Sign;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerSignOpenEvent;
+
+/**
+ * For events since 1.20.1
+ * @since TODO
+ */
+public class PlayerEventListener1201 implements Listener {
+
+    @EventHandler(ignoreCancelled = true)
+    @SuppressWarnings({"removal", "UnstableApiUsage"}) // thanks Paper, thanks Spigot
+    public void onPlayerSignOpenEvent(PlayerSignOpenEvent event) {
+        Sign sign = event.getSign();
+        Location location = BukkitUtil.adapt(sign.getLocation());
+        PlotArea area = location.getPlotArea();
+        if (area == null) {
+            return;
+        }
+        Plot plot = location.getOwnedPlot();
+        if (plot == null) {
+            if (PlotFlagUtil.isAreaRoadFlagsAndFlagEquals(area, EditSignFlag.class, false)) {
+                event.setCancelled(true);
+            }
+            return;
+        }
+        if (plot.isAdded(event.getPlayer().getUniqueId())) {
+            return; // allow for added players
+        }
+        if (!plot.getFlag(EditSignFlag.class)) {
+            plot.debug(event.getPlayer().getName() + " could not edit the sign because of edit-sign = false");
+            event.setCancelled(true);
+        }
+    }
+
+}

Core/src/main/java/com/plotsquared/core/plot/flag/GlobalFlagContainer.java

@@ -42,6 +42,7 @@
 import com.plotsquared.core.plot.flag.implementations.DisablePhysicsFlag;
 import com.plotsquared.core.plot.flag.implementations.DoneFlag;
 import com.plotsquared.core.plot.flag.implementations.DropProtectionFlag;
+import com.plotsquared.core.plot.flag.implementations.EditSignFlag;
 import com.plotsquared.core.plot.flag.implementations.EntityCapFlag;
 import com.plotsquared.core.plot.flag.implementations.EntityChangeBlockFlag;
 import com.plotsquared.core.plot.flag.implementations.ExplosionFlag;
@@ -153,6 +154,7 @@ private GlobalFlagContainer() {
         this.addFlag(DeviceInteractFlag.DEVICE_INTERACT_FALSE);
         this.addFlag(DisablePhysicsFlag.DISABLE_PHYSICS_FALSE);
         this.addFlag(DropProtectionFlag.DROP_PROTECTION_FALSE);
+        this.addFlag(EditSignFlag.EDIT_SIGN_FALSE);
         this.addFlag(EntityChangeBlockFlag.ENTITY_CHANGE_BLOCK_FALSE);
         this.addFlag(ExplosionFlag.EXPLOSION_FALSE);
         this.addFlag(ForcefieldFlag.FORCEFIELD_FALSE);

Core/src/main/java/com/plotsquared/core/plot/flag/implementations/EditSignFlag.java

@@ -0,0 +1,41 @@
+/*
+ * PlotSquared, a land and world management plugin for Minecraft.
+ * Copyright (C) IntellectualSites <https://intellectualsites.com>
+ * Copyright (C) IntellectualSites team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.plotsquared.core.plot.flag.implementations;
+
+import com.plotsquared.core.configuration.caption.TranslatableCaption;
+import com.plotsquared.core.plot.flag.types.BooleanFlag;
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+/**
+ * @since TODO
+ */
+public class EditSignFlag extends BooleanFlag<EditSignFlag> {
+    public static final EditSignFlag EDIT_SIGN_TRUE = new EditSignFlag(true);
+    public static final EditSignFlag EDIT_SIGN_FALSE = new EditSignFlag(false);
+
+    private EditSignFlag(final boolean value) {
+        super(value, TranslatableCaption.of("flags.flag_description_edit_sign"));
+    }
+
+    @Override
+    protected EditSignFlag flagOf(@NonNull final Boolean value) {
+        return value ? EDIT_SIGN_TRUE : EDIT_SIGN_FALSE;
+    }
+
+}

Core/src/main/java/com/plotsquared/core/util/EventDispatcher.java

@@ -63,6 +63,7 @@
 import com.plotsquared.core.plot.Rating;
 import com.plotsquared.core.plot.flag.PlotFlag;
 import com.plotsquared.core.plot.flag.implementations.DeviceInteractFlag;
+import com.plotsquared.core.plot.flag.implementations.EditSignFlag;
 import com.plotsquared.core.plot.flag.implementations.MiscPlaceFlag;
 import com.plotsquared.core.plot.flag.implementations.MobPlaceFlag;
 import com.plotsquared.core.plot.flag.implementations.PlaceFlag;
@@ -74,6 +75,7 @@
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.function.pattern.Pattern;
+import com.sk89q.worldedit.world.block.BlockCategories;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.block.BlockTypes;
 import net.kyori.adventure.text.Component;
@@ -392,6 +394,12 @@ public boolean checkPlayerBlockEvent(
                 if (player.hasPermission(Permission.PERMISSION_ADMIN_INTERACT_OTHER.toString(), false)) {
                     return true;
                 }
+                // we check for the EditSignFlag in the PlayerSignOpenEvent again, but we must not cancel the interact event
+                // or send a message if the flag is true
+                if (BlockCategories.ALL_SIGNS != null && BlockCategories.ALL_SIGNS.contains(blockType)
+                        && plot.getFlag(EditSignFlag.class)) {
+                    return true;
+                }
                 if (notifyPerms) {
                     player.sendMessage(
                             TranslatableCaption.of("commandconfig.flag_tutorial_usage"),

Core/src/main/resources/lang/messages_en.json

@@ -555,6 +555,7 @@
   "flags.flag_description_device_interact": "<gray>Set to `true` to allow devices to be interacted with in the plot.</gray>",
   "flags.flag_description_disable_physics": "<gray>Set to `true` to disable block physics in the plot.</gray>",
   "flags.flag_description_drop_protection": "<gray>Set to `true` to prevent dropped items from being picked up by non-members of the plot.</gray>",
+  "flags.flag_description_edit_sign": "<gray>Set to `true` to allow editing signs in the plot.</gray>",
   "flags.flag_description_feed": "<gray>Specify an interval in seconds and an optional amount by which the players will be fed (amount is 1 by default).</gray>",
   "flags.flag_description_forcefield": "<gray>Set to `true` to enable member forcefield in the plot.</gray>",
   "flags.flag_description_grass_grow": "<gray>Set to `false` to prevent grass from growing within the plot.</gray>",

build.gradle.kts

@@ -1,8 +1,8 @@
 import com.diffplug.gradle.spotless.SpotlessPlugin
 import com.github.jengelman.gradle.plugins.shadow.ShadowPlugin
 import groovy.json.JsonSlurper
-import java.net.URI
 import xyz.jpenilla.runpaper.task.RunServer
+import java.net.URI
 
 plugins {
     java