Initial 1.19 update

.gitignore

@@ -3,3 +3,9 @@ out/
 .idea/
 *.iml
 *.class
+.gradle/
+build/
+bin/
+.classpath
+.settings/
+.project

README.md

@@ -1,2 +1,3 @@
 # GxGUI
-My GUI lib for Spigot 1.18
+
+Gxorge's GUI library updated for 1.19 by https://true-og.net

build.gradle

@@ -0,0 +1,109 @@
+plugins {
+	
+    id 'java' // Tell gradle this is a java project.
+    id 'com.github.johnrengelman.shadow' version '8.1.1' // Import utility to package libraries into .jar file.
+    id 'eclipse' // Import eclipse plugin for IDE integration.
+    id 'maven-publish' // Import maven publish repo for Jitpack.
+
+}
+
+java {
+ 
+	// Declare java version.
+ 	sourceCompatibility = JavaVersion.VERSION_17
+
+}
+
+group = "com.hotten.gxgui" // Declare bundle identifier.
+version = "1.1" // Declare plugin version (will be in .jar).
+
+def apiVersion = "1.19" // Declare minecraft server target version.
+
+processResources {
+
+    def props = [
+        version: version,
+        apiVersion: apiVersion,
+    ]
+
+    inputs.properties props // Indicates to rerun if version changes.
+
+    filesMatching("plugin.yml") {
+
+        expand props
+
+    }
+
+}
+
+repositories {
+
+    mavenCentral()
+
+    maven {
+
+        url "https://repo.purpurmc.org/snapshots" // Get purpur API from purpur maven repository.
+
+    }
+    
+    maven {
+    
+        url "https://jitpack.io"
+    
+    }
+
+}
+
+dependencies {
+
+    compileOnly "org.purpurmc.purpur:purpur-api:1.19.4-R0.1-SNAPSHOT" // Declare purpur API version to be packaged.
+    implementation 'com.github.cnie109:Utilities-OG:c1c6c4ac33' // Import Utilities-OG API.
+
+	// Import project lombok.
+	compileOnly 'org.projectlombok:lombok:1.18.30'
+	annotationProcessor 'org.projectlombok:lombok:1.18.30'
+
+	testCompileOnly 'org.projectlombok:lombok:1.18.30'
+	testAnnotationProcessor 'org.projectlombok:lombok:1.18.30'
+
+}
+
+shadowJar {
+
+    minimize()
+    
+}
+
+jar.dependsOn shadowJar
+
+tasks.jar.configure {
+
+    archiveClassifier = "part"
+
+}
+
+tasks.shadowJar.configure {
+
+    archiveClassifier = null
+
+}
+
+tasks.withType(JavaCompile).configureEach {
+
+    options.compilerArgs += ["-parameters"]
+    options.encoding = 'UTF-8' // Override the system character set with a universal set.
+    options.fork = true // Enable compilation in a separate daemon process.
+
+}
+
+publishing {
+    publications {
+        maven(MavenPublication) {
+            groupId = 'com.hotten.gxgui'
+            artifactId = 'gxgui'
+            version = '1.1'
+
+            from components.java
+        }
+    }
+}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,249 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

jitpack.yml

@@ -0,0 +1,7 @@
+jdk:
+  - 17.0.8
+before_install:
+  - sdk install java 17.0.8-graalce
+  - sdk use java 17.0.8-graalce
+install:
+  - ./gradlew build publishToMavenLocal

pom.xml

@@ -1,50 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-
-    <groupId>uk.hotten.gxui</groupId>
-    <artifactId>GxUI</artifactId>
-    <version>1.2</version>
-
-    <repositories>
-        <repository>
-            <id>spigot-repo</id>
-            <url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
-        </repository>
-    </repositories>
-
-    <dependencies>
-        <dependency>
-            <groupId>org.spigotmc</groupId>
-            <artifactId>spigot-api</artifactId>
-            <version>1.18.2-R0.1-SNAPSHOT</version>
-            <scope>provided</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>1.18.8</version>
-        </dependency>
-    </dependencies>
-
-    <properties>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
-    </properties>
-
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <configuration>
-                    <source>11</source>
-                    <target>11</target>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
-
-</project>

settings.gradle

@@ -0,0 +1 @@
+rootProject.name = "GxGUI"

src/main/java/uk/hotten/gxui/GUIBase.java

@@ -1,6 +1,11 @@
 package uk.hotten.gxui;
 
-import lombok.Getter;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.StringTokenizer;
+
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.Sound;
@@ -14,254 +19,278 @@ import org.bukkit.event.inventory.ClickType;
 import org.bukkit.event.inventory.InventoryClickEvent;
 import org.bukkit.event.inventory.InventoryCloseEvent;
 import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.InventoryHolder;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
 import org.bukkit.plugin.java.JavaPlugin;
 import org.bukkit.scheduler.BukkitRunnable;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.StringTokenizer;
+import lombok.Getter;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.TextComponent;
+import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
 
 public abstract class GUIBase implements Listener {
 
-    private JavaPlugin plugin;
+	private JavaPlugin plugin;
 
-    private HashMap<Integer, GUIItem> inventoryContents;
+	private HashMap<Integer, GUIItem> inventoryContents;
 
-    @Getter private String inventoryName;
-    @Getter private int inventorySize;
-    @Getter private boolean fillEmpty;
+	@Getter private String inventoryName;
+	@Getter private int inventorySize;
+	@Getter private boolean fillEmpty;
 
-    @Getter private Sound openSound;
-    @Getter private float openSoundFloat;
-    @Getter private Sound errorSound;
-    @Getter private float errorSoundFloat;
+	@Getter private Sound openSound;
+	@Getter private float openSoundFloat;
+	@Getter private Sound errorSound;
+	@Getter private float errorSoundFloat;
 
-    @Getter private Player player;
+	@Getter private Player player;
 
-    private Inventory inventory;
+	private Inventory inventory;
 
-    private boolean isOpen = false; //prevents accidental un-registration from other GUIs that have the same name
+	private boolean isOpen = false; // prevents accidental un-registration from other GUIs that have the same name
 
-    private HashMap<Integer, String> itemErrors;
-    private HashMap<Integer, Integer> itemTimings;
+	private HashMap<Integer, String> itemErrors;
+	private HashMap<Integer, Integer> itemTimings;
 
-    public GUIBase(JavaPlugin plugin, Player player, String inventoryName, int inventorySize, boolean fillEmpty) {
-        this.plugin = plugin;
-        this.player = player;
-        this.inventoryName = inventoryName;
-        this.inventorySize = inventorySize;
-        this.fillEmpty = fillEmpty;
-        inventoryContents = new HashMap<>();
+	public GUIBase(JavaPlugin plugin, Player player, String inventoryName, int inventorySize, boolean fillEmpty) {
+		this.plugin = plugin;
+		this.player = player;
+		this.inventoryName = inventoryName;
+		this.inventorySize = inventorySize;
+		this.fillEmpty = fillEmpty;
+		inventoryContents = new HashMap<>();
 
-        openSound = null;
+		openSound = null;
 
-        errorSound = Sound.ENTITY_ITEM_BREAK;
-        errorSoundFloat = (float) 0.6;
+		errorSound = Sound.ENTITY_ITEM_BREAK;
+		errorSoundFloat = (float) 0.6;
 
-        itemErrors = new HashMap<>();
-        itemTimings = new HashMap<>();
-    }
+		itemErrors = new HashMap<>();
+		itemTimings = new HashMap<>();
+	}
 
-    public GUIBase(JavaPlugin plugin, Player player, String inventoryName, int inventorySize, boolean fillEmpty, Sound openSound, float openSoundFloat, Sound errorSound, float errorSoundFloat) {
-        this.plugin = plugin;
-        this.player = player;
-        this.inventoryName = inventoryName;
-        this.inventorySize = inventorySize;
-        this.fillEmpty = fillEmpty;
-        inventoryContents = new HashMap<>();
+	public GUIBase(JavaPlugin plugin, Player player, String inventoryName, int inventorySize, boolean fillEmpty, Sound openSound, float openSoundFloat, Sound errorSound, float errorSoundFloat) {
+		this.plugin = plugin;
+		this.player = player;
+		this.inventoryName = inventoryName;
+		this.inventorySize = inventorySize;
+		this.fillEmpty = fillEmpty;
+		inventoryContents = new HashMap<>();
 
-        this.openSound = openSound;
-        this.openSoundFloat = openSoundFloat;
+		this.openSound = openSound;
+		this.openSoundFloat = openSoundFloat;
 
-        this.errorSound = errorSound;
-        this.errorSoundFloat = errorSoundFloat;
+		this.errorSound = errorSound;
+		this.errorSoundFloat = errorSoundFloat;
 
-        itemErrors = new HashMap<>();
-        itemTimings = new HashMap<>();
-    }
+		itemErrors = new HashMap<>();
+		itemTimings = new HashMap<>();
+	}
 
-    public void open(boolean refresh) {
-        if (!isOpen)
-            Bukkit.getServer().getPluginManager().registerEvents(this, plugin);
-        if (openSound != null)
-            player.playSound(player.getLocation(), openSound, 100f, openSoundFloat);
-        isOpen = true;
-        inventory = Bukkit.getServer().createInventory(null, inventorySize, inventoryName);
+	public void open(boolean refresh) {
+		if (! isOpen)
+			Bukkit.getServer().getPluginManager().registerEvents(this, plugin);
+		if (openSound != null)
+			player.playSound(player.getLocation(), openSound, 100f, openSoundFloat);
+		isOpen = true;
 
-        inventoryContents.clear();
-        setupItems();
+		Inventory playersInventory = player.getInventory();
+		InventoryHolder inventoryContainer = playersInventory.getHolder(false);
+		TextComponent nameHandler = LegacyComponentSerializer.legacyAmpersand().deserialize(inventoryName);
+		inventory = Bukkit.createInventory(inventoryContainer, inventorySize, nameHandler);
 
-        for (Map.Entry<Integer, GUIItem> i : inventoryContents.entrySet()) {
-            inventory.setItem(i.getKey(), i.getValue().build());
-        }
+		inventoryContents.clear();
+		setupItems();
 
-        if (fillEmpty) {
-            for (int i = 0; i<inventorySize; i++) {
-                if (inventory.getItem(i) == null) {
-                    inventory.setItem(i, fillSlot());
-                }
-            }
-        }
+		for (Map.Entry<Integer, GUIItem> i : inventoryContents.entrySet()) {
+			inventory.setItem(i.getKey(), i.getValue().build());
+		}
 
-        player.openInventory(inventory);
+		if (fillEmpty) {
+			for (int i = 0; i < inventorySize; i++) {
+				if (inventory.getItem(i) == null) {
+					inventory.setItem(i, fillSlot());
+				}
+			}
+		}
 
-        if (refresh) {
-            new BukkitRunnable() {
+		player.openInventory(inventory);
 
-                @Override
-                public void run() {
-                    Inventory inv = ((HumanEntity) player).getOpenInventory().getTopInventory();
+		if (refresh) {
+			new BukkitRunnable() {
 
-                    if (!player.getOpenInventory().getTitle().equalsIgnoreCase(inventoryName)) {
-                        cancel();
-                        return;
-                    }
+				@Override
+				public void run() {
+					Inventory inventory = ((HumanEntity) player).getOpenInventory().getTopInventory();
+					Component inventoryTitle = player.getOpenInventory().title();
+					String inventoryTitleText = inventoryTitle.examinableName();
+					if (! inventoryTitleText.equalsIgnoreCase(inventoryName)) {
+						cancel();
+						return;
+					}
 
-                    inv.clear();
-                    inventoryContents.clear();
-                    setupItems();
+					inventory.clear();
+					inventoryContents.clear();
+					setupItems();
+					int counter = 0;
+					for (Map.Entry<Integer, GUIItem> i : inventoryContents.entrySet()) {
+						if (itemErrors.containsKey(i.getKey())) {
 
-                    for (Map.Entry<Integer, GUIItem> i : inventoryContents.entrySet()) {
-                        if (itemErrors.containsKey(i.getKey())) {
-                            GUIItem error = new GUIItem(Material.RED_STAINED_GLASS_PANE, 1, "§c§lERROR");
-                            ArrayList<String> errorLore = addLinebreaks(itemErrors.get(i.getKey()), 30, "§7");
-                            error.lore(errorLore);
+							GUIItem error = new GUIItem(Material.RED_STAINED_GLASS_PANE, 1, addLinebreaks(itemErrors.get(i.getKey()), 30, "&7").get(counter), "&c&lERROR");
 
+							counter++;
+							int tick = itemTimings.get(i.getKey());
+							tick++;
+							itemTimings.remove(i.getKey());
+							itemTimings.put(i.getKey(), tick);
 
-                            int tick = itemTimings.get(i.getKey());
-                            tick++;
-                            itemTimings.remove(i.getKey());
-                            itemTimings.put(i.getKey(), tick);
+							if (tick >= 9) {
+								itemErrors.remove(i.getKey());
+								itemTimings.remove(i.getKey());
+								inventory.setItem(i.getKey(), i.getValue().build());
+								continue;
+							}
 
-                            if (tick >= 9) {
-                                itemErrors.remove(i.getKey());
-                                itemTimings.remove(i.getKey());
-                                inventory.setItem(i.getKey(), i.getValue().build());
-                                continue;
-                            }
+							inventory.setItem(i.getKey(), error.build());
 
-                            inventory.setItem(i.getKey(), error.build());
-                            continue;
-                        }
-                        inv.setItem(i.getKey(), i.getValue().build());
-                    }
+							continue;
 
-                    if (fillEmpty) {
-                        for (int i = 0; i<inventorySize; i++) {
-                            if (inventory.getItem(i) == null) {
-                                inventory.setItem(i, fillSlot());
-                            }
-                        }
-                    }
-                }
-            }.runTaskTimer(plugin, 0, 5);
-        }
-    }
+						}
 
-    public abstract void setupItems();
+						inventory.setItem(i.getKey(), i.getValue().build());
 
-    public void addItem(Integer slot, GUIItem item) {
-        inventoryContents.put(slot, item);
-    }
+					}
 
-    private ItemStack fillSlot() {
-        ItemStack i = new ItemStack(Material.GRAY_STAINED_GLASS_PANE, 1);
-        ItemMeta m = i.getItemMeta();
-        m.setDisplayName(" ");
-        i.setItemMeta(m);
-        return i;
-    }
+					if (fillEmpty) {
+						for (int i = 0; i<inventorySize; i++) {
+							if (inventory.getItem(i) == null) {
+								inventory.setItem(i, fillSlot());
+							}
+						}
+					}
+				}
+			}.runTaskTimer(plugin, 0, 5);
+		}
+	}
 
-    @EventHandler
-    public void handle(InventoryClickEvent event) {
-        Player clickedPlayer = (Player) event.getWhoClicked();
-        ClickType clickType = event.getClick();
-        Inventory inventory = event.getClickedInventory();
-        ItemStack item = event.getCurrentItem();
-        String invName = event.getView().getTitle();
+	public abstract void setupItems();
 
-        if (clickedPlayer != player)
-            return;
+	public static ArrayList<TextComponent> convertToTextComponents(List<String> stringList) {
+		ArrayList<TextComponent> textComponents = new ArrayList<>();
 
-        if (inventory == null)
-            return;
+		for (String str : stringList) {
+			TextComponent textComponent = LegacyComponentSerializer.legacyAmpersand().deserialize(str);
+			textComponents.add(textComponent);
+		}
 
-        if (invName.equalsIgnoreCase(inventoryName)) {
-            if (item == null || !item.hasItemMeta() || item.getItemMeta().getDisplayName().equalsIgnoreCase(" ")) {
-                if (errorSound != null)
-                    player.playSound(player.getLocation(), errorSound, 100f, errorSoundFloat);
-                event.setCancelled(true);
-                return;
-            }
+		return textComponents;
+	}
 
-            if (itemErrors.containsKey(event.getSlot())) {
-                player.playSound(player.getLocation(), Sound.BLOCK_NOTE_BLOCK_BASS, 100f, 0.7f);
-                event.setCancelled(true);
-                return;
-            }
+	public void addItem(Integer slot, GUIItem item) {
+		inventoryContents.put(slot, item);
+	}
 
-            if (inventoryContents.containsKey(event.getSlot())) {
-                GUIItem guiItem = inventoryContents.get(event.getSlot());
-                event.setCancelled(true);
+	private ItemStack fillSlot() {
+		ItemStack i = new ItemStack(Material.GRAY_STAINED_GLASS_PANE, 1);
+		ItemMeta m = i.getItemMeta();
+		TextComponent emptySlotDisplayName = LegacyComponentSerializer.legacyAmpersand().deserialize(" ");
+		m.displayName(emptySlotDisplayName);
+		i.setItemMeta(m);
+		return i;
+	}
 
-                if (!guiItem.isButton()) {
-                    if (guiItem.playErrorSound() && errorSound != null)
-                        player.playSound(player.getLocation(), errorSound, 100f, errorSoundFloat);
-                    return;
-                }
+	@EventHandler
+	public void handle(InventoryClickEvent event) {
+		Player clickedPlayer = (Player) event.getWhoClicked();
+		ClickType clickType = event.getClick();
+		Inventory inventory = event.getClickedInventory();
+		ItemStack item = event.getCurrentItem();
+		Component inventoryName = event.getView().title();
+		String inventoryTitleText = inventoryName.examinableName();
 
-                boolean exec = guiItem.executeClick(clickType);
-                if (!exec) {
-                    if (guiItem.playErrorSound() && errorSound != null)
-                        player.playSound(player.getLocation(), errorSound, 100f, errorSoundFloat);
-                }
-            }
-        }
-    }
+		if (clickedPlayer != player)
+			return;
 
-    @EventHandler(priority = EventPriority.HIGHEST)
-    public void close(InventoryCloseEvent event) {
-        Player closer = (Player) event.getPlayer();
+		if (inventory == null)
+			return;
 
-        if (event.getView().getTitle().equalsIgnoreCase(inventoryName) && isOpen) {
-            if (closer == player) {
-                HandlerList.unregisterAll(this);
-                isOpen = false;
-            }
-        }
-    }
+		if (inventoryTitleText.equalsIgnoreCase(inventoryName.examinableName())) {
+			if (item == null || ! item.hasItemMeta() || item.getItemMeta().displayName().examinableName().equalsIgnoreCase(" ")) {
+				if (errorSound != null)
+					player.playSound(player.getLocation(), errorSound, 100f, errorSoundFloat);
+				event.setCancelled(true);
+				return;
+			}
 
-    public void showErrorItem(Player player, Integer item, String error, boolean sound) {
-        itemErrors.put(item, error);
-        itemTimings.put(item, 0);
-        if (sound)
-            player.playSound(player.getLocation(), Sound.BLOCK_NOTE_BLOCK_BASS, 100f, 0.7f);
-    }
+			if (itemErrors.containsKey(event.getSlot())) {
+				player.playSound(player.getLocation(), Sound.BLOCK_NOTE_BLOCK_BASS, 100f, 0.7f);
+				event.setCancelled(true);
+				return;
+			}
 
-    public ArrayList<String> addLinebreaks(String input, int maxLineLength, String toAppendAfterNewline) {
-        ArrayList<String> result = new ArrayList<>();
+			if (inventoryContents.containsKey(event.getSlot())) {
+				GUIItem guiItem = inventoryContents.get(event.getSlot());
+				event.setCancelled(true);
 
-        StringTokenizer tok = new StringTokenizer(input, " ");
-        StringBuilder output = new StringBuilder();
-        output.insert(0, toAppendAfterNewline);
-        int lineLen = 0;
-        while (tok.hasMoreTokens()) {
-            String word = tok.nextToken();
+				if (! guiItem.isButton()) {
+					if (guiItem.isPlayErrorSound() && errorSound != null)
+						player.playSound(player.getLocation(), errorSound, 100f, errorSoundFloat);
+						event.setCancelled(true);
+					return;
+				}
 
-            if (lineLen + word.length() > maxLineLength) {
-                result.add(output.toString());
-                output = new StringBuilder();
-                output.append(toAppendAfterNewline);
-                lineLen = 0;
-            }
-            output.append(word).append(" ");
-            lineLen += word.length();
-        }
-        result.add(output.toString());
+				boolean exec = guiItem.executeClick(clickType);
+				if (! exec) {
+					if (guiItem.isPlayErrorSound() && errorSound != null)
+						player.playSound(player.getLocation(), errorSound, 100f, errorSoundFloat);
+				}
+			}
+		}
+	}
 
-        return result;
-    }
+	@EventHandler(priority = EventPriority.HIGHEST)
+	public void close(InventoryCloseEvent event) {
+		Player closer = (Player) event.getPlayer();
+		Component inventoryTitle = player.getOpenInventory().title();
+		String inventoryTitleText = inventoryTitle.examinableName();
+		if (inventoryTitleText.equalsIgnoreCase(inventoryName) && isOpen) {
+			if (closer == player) {
+				HandlerList.unregisterAll(this);
+				isOpen = false;
+			}
+		}
+	}
+
+	public void showErrorItem(Player player, Integer item, String error, boolean sound) {
+		itemErrors.put(item, error);
+		itemTimings.put(item, 0);
+		if (sound)
+			player.playSound(player.getLocation(), Sound.BLOCK_NOTE_BLOCK_BASS, 100f, 0.7f);
+	}
+
+	public ArrayList<String> addLinebreaks(String input, int maxLineLength, String toAppendAfterNewline) {
+		ArrayList<String> result = new ArrayList<>();
+
+		StringTokenizer tok = new StringTokenizer(input, " ");
+		StringBuilder output = new StringBuilder();
+		output.insert(0, toAppendAfterNewline);
+		int lineLen = 0;
+		while (tok.hasMoreTokens()) {
+			String word = tok.nextToken();
+
+			if (lineLen + word.length() > maxLineLength) {
+				result.add(output.toString());
+				output = new StringBuilder();
+				output.append(toAppendAfterNewline);
+				lineLen = 0;
+			}
+			output.append(word).append(" ");
+			lineLen += word.length();
+		}
+		result.add(output.toString());
+
+		return result;
+	}
 }

src/main/java/uk/hotten/gxui/GUIButton.java

@@ -2,9 +2,9 @@ package uk.hotten.gxui;
 
 public abstract interface GUIButton {
 
-    public abstract boolean leftClick();
-    public abstract boolean leftClickShift();
-    public abstract boolean rightClick();
-    public abstract boolean rightClickShift();
+	public abstract boolean leftClick();
+	public abstract boolean leftClickShift();
+	public abstract boolean rightClick();
+	public abstract boolean rightClickShift();
 
 }

src/main/java/uk/hotten/gxui/GUIItem.java

@@ -1,8 +1,11 @@
 package uk.hotten.gxui;
 
-import lombok.Getter;
-import lombok.Setter;
-import lombok.experimental.Accessors;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.enchantments.Enchantment;
 import org.bukkit.event.inventory.ClickType;
@@ -10,9 +13,11 @@ import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
 import org.bukkit.inventory.meta.SkullMeta;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Map;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.experimental.Accessors;
+import net.kyori.adventure.text.TextComponent;
+import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
 
 @Accessors(fluent = true)
 public class GUIItem {
@@ -76,17 +81,18 @@ public class GUIItem {
      */
     public ItemStack build() {
         ItemStack i;
+        TextComponent displayNameTextComponent = LegacyComponentSerializer.legacyAmpersand().deserialize(displayName);
+        List<TextComponent> loreTextComponent = GUIBase.convertToTextComponents(lore);
         try {
-            if (!isSkull) {
+            if (! isSkull) {
                 if (type != -1)
-                    i = new ItemStack(item, amount); //TODO: shorts
+                    i = new ItemStack(item, amount); // TODO: shorts?
                 else
                     i = new ItemStack(item, amount);
                 ItemMeta m = i.getItemMeta();
-                if (!displayName.equals("Not Set"))
-                    m.setDisplayName(displayName);
-                m.setLore(lore);
-
+                if (! displayName.equals("Not Set"))
+                    m.displayName(displayNameTextComponent);
+                m.lore(loreTextComponent);
                 if (!enchantments.isEmpty())
                     for (Map.Entry<Enchantment, Integer> e : enchantments.entrySet())
                         m.addEnchant(e.getKey(), e.getValue(), true);
@@ -95,10 +101,10 @@ public class GUIItem {
             } else {
                 i = new ItemStack(item, amount);
                 SkullMeta m = (SkullMeta) i.getItemMeta();
-                m.setOwner(skullOwner);
+                m.setOwningPlayer(Bukkit.getOfflinePlayer(skullOwner));
                 if (!displayName.equals("Not Set"))
-                    m.setDisplayName(displayName);
-                m.setLore(lore);
+                    m.displayName(displayNameTextComponent);
+                m.lore(loreTextComponent);
 
                 i.setItemMeta(m);
             }
@@ -110,7 +116,15 @@ public class GUIItem {
         return i;
     }
 
-    public boolean isButton() {
+    public boolean isPlayErrorSound() {
+		return playErrorSound;
+	}
+
+	public void setPlayErrorSound(boolean playErrorSound) {
+		this.playErrorSound = playErrorSound;
+	}
+
+	public boolean isButton() {
         return !(button == null);
     }
 

src/main/resources/plugin.yml

@@ -0,0 +1,7 @@
+name: GxGUI
+author: Gxorge
+description: Gxorge's GUI library updated for 1.19 by TrueOG Network
+website: https://github.com/Gxorge/GxGUI
+version: '${version}'
+api-version: '${apiVersion}'
+main: uk/hotten/gxui