Initial draft for PlaceholderAPI support (needs performance improvements)

plugin/pom.xml

@@ -114,6 +114,11 @@
             <artifactId>ProtocolLib</artifactId>
         </dependency>
 
+        <dependency>
+            <groupId>me.clip</groupId>
+            <artifactId>placeholderapi</artifactId>
+        </dependency>
+
         <dependency>
             <groupId>org.bstats</groupId>
             <artifactId>bstats-bukkit-lite</artifactId>

plugin/src/main/java/me/filoghost/holographicdisplays/HolographicDisplays.java

@@ -12,6 +12,7 @@ import me.filoghost.fcommons.config.exception.ConfigException;
 import me.filoghost.fcommons.logging.ErrorCollector;
 import me.filoghost.holographicdisplays.api.internal.HolographicDisplaysAPIProvider;
 import me.filoghost.holographicdisplays.bridge.bungeecord.BungeeServerTracker;
+import me.filoghost.holographicdisplays.bridge.placeholderapi.PlaceholderAPIHook;
 import me.filoghost.holographicdisplays.bridge.protocollib.ProtocolLibHook;
 import me.filoghost.holographicdisplays.commands.HologramCommandManager;
 import me.filoghost.holographicdisplays.core.nms.NMSManager;
@@ -112,6 +113,7 @@ public class HolographicDisplays extends FCommonsPlugin implements ProtocolPacke
         load(true, errorCollector);
         
         ProtocolLibHook.setup(this, nmsManager, this, errorCollector);
+        PlaceholderAPIHook.setup();
         
         placeholderManager.startUpdaterTask(this);
 

plugin/src/main/java/me/filoghost/holographicdisplays/bridge/placeholderapi/PlaceholderAPIHook.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) filoghost and contributors
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+package me.filoghost.holographicdisplays.bridge.placeholderapi;
+
+import me.clip.placeholderapi.PlaceholderAPI;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+
+public class PlaceholderAPIHook {
+    
+    private static boolean enabled;
+
+    public static void setup() {
+        if (!Bukkit.getPluginManager().isPluginEnabled("PlaceholderAPI")) {
+            return;
+        }
+        
+        enabled = true;
+    }
+
+    public static boolean containsPlaceholders(String text) {
+        return PlaceholderAPI.containsPlaceholders(text);
+    }
+    
+    public static String replacePlaceholders(Player player, String text) {
+        return PlaceholderAPI.setPlaceholders(player, text);
+    }
+
+    public static boolean isEnabled() {
+        return enabled;
+    }
+
+}

plugin/src/main/java/me/filoghost/holographicdisplays/bridge/protocollib/PacketListener.java

@@ -12,6 +12,7 @@ import com.comphenix.protocol.events.PacketAdapter;
 import com.comphenix.protocol.events.PacketContainer;
 import com.comphenix.protocol.events.PacketEvent;
 import com.comphenix.protocol.wrappers.WrappedWatchableObject;
+import me.filoghost.holographicdisplays.bridge.placeholderapi.PlaceholderAPIHook;
 import me.filoghost.holographicdisplays.bridge.protocollib.packet.AbstractPacket;
 import me.filoghost.holographicdisplays.bridge.protocollib.packet.WrapperPlayServerEntityMetadata;
 import me.filoghost.holographicdisplays.bridge.protocollib.packet.WrapperPlayServerSpawnEntityLiving;
@@ -148,6 +149,10 @@ class PacketListener extends PacketAdapter {
                 }
             }
         }
+        
+        if (PlaceholderAPIHook.isEnabled() && PlaceholderAPIHook.containsPlaceholders(text)) {
+            text = PlaceholderAPIHook.replacePlaceholders(player, text);
+        }
 
         return text;
     }

plugin/src/main/resources/plugin.yml

@@ -4,7 +4,7 @@ author: filoghost
 version: ${pluginVersion}
 api-version: 1.13
 
-softdepend: [ProtocolLib]
+softdepend: [ProtocolLib, PlaceholderAPI]
 
 commands:
    holograms:

pom.xml

@@ -56,6 +56,11 @@
             <id>dmulloy2-repo</id>
             <url>https://repo.dmulloy2.net/repository/public/</url>
         </repository>
+        
+        <repository>
+            <id>placeholderapi-repo</id>
+            <url>https://repo.extendedclip.com/content/repositories/placeholderapi/</url>
+        </repository>
     </repositories>
     
     <dependencyManagement>
@@ -199,6 +204,13 @@
                 <version>4.5.0</version>
                 <scope>provided</scope>
             </dependency>
+
+            <dependency>
+                <groupId>me.clip</groupId>
+                <artifactId>placeholderapi</artifactId>
+                <version>2.8.1</version>
+                <scope>provided</scope>
+            </dependency>
     
             <dependency>
                 <groupId>org.bstats</groupId>