added Multiline Texfield Control

.gitignore

@@ -9,4 +9,5 @@
 .buildpath
 .classpath
 .project
-./out/
+./out/
+./target/

.idea/libraries/antlr_antlr4_runtime.xml

@@ -0,0 +1,10 @@
+<component name="libraryTable">
+  <library name="antlr.antlr4.runtime" type="repository">
+    <properties maven-id="org.antlr:antlr4-runtime:4.12.0" />
+    <CLASSES>
+      <root url="jar://$MAVEN_REPOSITORY$/org/antlr/antlr4-runtime/4.12.0/antlr4-runtime-4.12.0.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES />
+  </library>
+</component>

pom.xml

@@ -12,6 +12,11 @@
         <maven.compiler.source>17</maven.compiler.source>
         <maven.compiler.target>17</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <antlr4.version>4.12.0</antlr4.version>  <!-- Use the latest ANTLR version as of your current date -->
+
     </properties>
 
     <repositories>
@@ -19,6 +24,7 @@
             <id>jitpack.io</id>
             <url>https://jitpack.io</url>
         </repository>
+
     </repositories>
 
     <dependencies>
@@ -28,8 +34,37 @@
             <version>4.2</version>
         </dependency>
 
+
+        <!-- ANTLR4 runtime -->
+        <dependency>
+            <groupId>org.antlr</groupId>
+            <artifactId>antlr4-runtime</artifactId>
+            <version>${antlr4.version}</version>
+        </dependency>
+
+
+
+
     </dependencies>
 
 
+    <build>
+        <plugins>
+            <!-- ANTLR4 Maven plugin -->
+            <plugin>
+                <groupId>org.antlr</groupId>
+                <artifactId>antlr4-maven-plugin</artifactId>
+                <version>${antlr4.version}</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>antlr4</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
 
 </project>

src/main/java/controlP5/MultilineTextfield.java

@@ -0,0 +1,26 @@
+package controlP5;
+
+import processing.event.KeyEvent;
+
+public class MultilineTextfield extends Textfield {
+
+    public MultilineTextfield(ControlP5 theControlP5, String theName) {
+        super(theControlP5, theName);
+    }
+
+    @Override
+    public void keyEvent(KeyEvent theKeyEvent) {
+        if (isUserInteraction && isTexfieldActive && isActive && theKeyEvent.getAction() == KeyEvent.PRESS) {
+            if (ignorelist.contains(cp5.getKeyCode())) {
+                return;
+            }
+            if (cp5.getKeyCode() == ENTER) {
+                // Append a new line character to the text buffer
+                _myTextBuffer.insert(_myTextBufferIndex, '\n');
+                setIndex(_myTextBufferIndex + 1);
+            } else {
+                super.keyEvent(theKeyEvent);
+            }
+        }
+    }
+}

src/main/java/controlP5/Textfield.java

@@ -384,7 +384,7 @@ public class Textfield extends Controller< Textfield > {
 		return s;
 	}
 
-	private Textfield setIndex( int theIndex ) {
+	protected Textfield setIndex( int theIndex ) {
 		_myTextBufferIndex = theIndex;
 		return this;
 	}