.gitignore

@@ -1,5 +1,2 @@
-# Maven build directories
+/target/
-target/
+/.settings/
-
-# Eclipse settings directories
-.settings/

.project

@@ -5,6 +5,11 @@
 	<projects>
 	</projects>
 	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
 		<buildCommand>
 			<name>org.eclipse.m2e.core.maven2Builder</name>
 			<arguments>
@@ -12,6 +17,7 @@
 		</buildCommand>
 	</buildSpec>
 	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
 		<nature>org.eclipse.m2e.core.maven2Nature</nature>
 	</natures>
 </projectDescription>

Jenkinsfile

@@ -1,40 +0,0 @@
-pipeline {
-	agent any
-
-	options {
-		ansiColor('xterm')
-	}
-
-	stages {
-		stage('Build') {
-			steps {
-				sh 'mvn -DskipTests clean package'
-			}
-		}
-		stage('Test') {
-			steps {
-				sh 'mvn test'
-			}
-			post {
-				always {
-					junit '*/target/surefire-reports/*.xml'
-				}
-			}
-		}
-		stage('SonarQube Analysis') {
-			when {
-				branch 'develop'
-			}
-			steps {
-				withSonarQubeEnv('KSKE SonarQube') {
-					sh 'mvn org.sonarsource.scanner.maven:sonar-maven-plugin:3.9.1.2184:sonar'
-				}
-			}
-		}
-	}
-	post {
-		success {
-			archiveArtifacts artifacts: '*/target/undo-redo-*.jar'
-		}
-	}
-}

core/.project

@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-	<name>undo-redo-core</name>
-	<comment></comment>
-	<projects>
-	</projects>
-	<buildSpec>
-		<buildCommand>
-			<name>org.eclipse.jdt.core.javabuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>org.eclipse.m2e.core.maven2Builder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-	</buildSpec>
-	<natures>
-		<nature>org.eclipse.jdt.core.javanature</nature>
-		<nature>org.eclipse.m2e.core.maven2Nature</nature>
-	</natures>
-</projectDescription>

core/pom.xml

@@ -1,15 +0,0 @@
-<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
-	<modelVersion>4.0.0</modelVersion>
-
-	<artifactId>undo-redo-core</artifactId>
-	<name>Undo-Redo Core</name>
-	
-	<parent>
-		<groupId>dev.kske</groupId>
-		<artifactId>undo-redo</artifactId>
-		<version>0.0.1-SNAPSHOT</version>
-	</parent>
-
-</project>

core/src/main/java/dev/kske/undoredo/core/Change.java

@@ -1,33 +0,0 @@
-package dev.kske.undoredo.core;
-
-/**
- * Base interface for changes to be registered in an undo manager.
- * 
- * @author Maximilian Käfer
- * @since 0.0.1
- */
-public interface Change {
-
-	/**
-	 * Performs the action implemented by this change.
-	 *
-	 * @since 0.0.1
-	 */
-	void apply();
-
-	/**
-	 * Inverts this change.
-	 * 
-	 * @implSpec This method is not supposed to alter the state of this change, but rather to create
-	 *           a new complementary change.
-	 * @return the inverted change
-	 * @since 0.0.1
-	 */
-	Change invert();
-
-	/**
-	 * @return whether the application of this change would result in an identical state
-	 * @since 0.0.1
-	 */
-	boolean isIdentity();
-}

core/src/main/java/dev/kske/undoredo/core/ChangeManager.java

@@ -1,73 +0,0 @@
-package dev.kske.undoredo.core;
-
-import java.util.List;
-
-/**
- * A change manager keeps track of subsequent changes and allows un- and redoing them. A specific
- * change can be marked using {@link #mark()} to keep track of a saved state in the application that
- * uses the manager.
- *
- * @param <C> the change type to store in this change manager
- * @author Maximilian K&auml;fer
- * @author Kai S. K. Engelbart
- * @since 0.0.1
- */
-public interface ChangeManager<C extends Change> {
-
-	/**
-	 * Applies the given change and appends it to the change list.
-	 *
-	 * @param change the change to add
-	 * @since 0.0.1
-	 */
-	void addChange(C change);
-
-	/**
-	 * Undoes the current change.
-	 *
-	 * @return whether an action was performed
-	 * @since 0.1.0
-	 */
-	boolean undo();
-
-	/**
-	 * Applies the change that was undone before.
-	 *
-	 * @return whether an action was performed
-	 * @since 0.0.1
-	 */
-	boolean redo();
-
-	/**
-	 * Marks the current change.
-	 *
-	 * @since 0.0.1
-	 */
-	void mark();
-
-	/**
-	 * @return whether the current change is marked
-	 * @since 0.0.1
-	 */
-	boolean isAtMarkedIndex();
-
-	/**
-	 * @return whether a change is present that can be undone
-	 * @since 0.0.1
-	 */
-	boolean isUndoAvailable();
-
-	/**
-	 * @return whether a change is present that can be redone
-	 * @since 0.0.1
-	 */
-	boolean isRedoAvailable();
-
-	/**
-	 * Provides an unmodifiable view of the changes stored in this change manager.
-	 *
-	 * @return all stored changes
-	 * @since 0.0.1
-	 */
-	List<C> getChanges();
-}

core/src/main/java/dev/kske/undoredo/core/UnlimitedChangeManager.java

@@ -1,69 +0,0 @@
-package dev.kske.undoredo.core;
-
-import java.util.*;
-
-/**
- * @param <C> the change type to store in this change manager
- * @author Maximilian K&auml;fer
- * @author Kai S. K. Engelbart
- * @since 0.0.1
- */
-public final class UnlimitedChangeManager<C extends Change> implements ChangeManager<C> {
-
-	private final List<C> changes = new ArrayList<>();
-
-	private int	index		= -1;
-	private int	markedIndex	= -1;
-
-	@Override
-	public void addChange(C change) {
-		change.apply();
-		changes.add(change);
-		++index;
-	}
-
-	@Override
-	public boolean undo() {
-		if (isUndoAvailable()) {
-			changes.get(index).invert().apply();
-			--index;
-			return true;
-		}
-		return false;
-	}
-
-	@Override
-	public boolean redo() {
-		if (isRedoAvailable()) {
-			changes.get(index + 1).apply();
-			++index;
-			return true;
-		}
-		return false;
-	}
-
-	@Override
-	public void mark() {
-		markedIndex = index;
-	}
-
-	@Override
-	public boolean isAtMarkedIndex() {
-		return markedIndex == index;
-	}
-
-	@Override
-	public boolean isUndoAvailable() {
-		return index > -1;
-	}
-
-	@Override
-	public boolean isRedoAvailable() {
-		return index < changes.size() - 1;
-	}
-
-	@Override
-	public List<C> getChanges() {
-		return Collections.unmodifiableList(changes);
-	}
-}

core/src/test/java/dev/kske/undoredo/core/ChangeManagerTest.java

@@ -1,104 +0,0 @@
-package dev.kske.undoredo.core;
-
-import static org.junit.jupiter.api.Assertions.*;
-
-import org.junit.jupiter.api.*;
-
-/**
- * @author Kai S. K. Engelbart
- * @since 0.0.1
- */
-class ChangeManagerTest {
-
-	ChangeManager<IntChange>	manager;
-	IntWrapper					wrapper;
-	IntChange					change;
-
-	@BeforeEach
-	void prepareChangeManager() {
-		manager	= new UnlimitedChangeManager<>();
-		wrapper	= new IntWrapper();
-		change	= new IntChange(wrapper, 1);
-	}
-
-	/**
-	 * Tests adding a change.
-	 *
-	 * @since 0.0.1
-	 */
-	@Test
-	@Order(1)
-	void testAddChange() {
-		assertSame(0, wrapper.value);
-		manager.addChange(change);
-		assertSame(1, wrapper.value);
-	}
-
-	/**
-	 * Tests the consistency of the change list.
-	 *
-	 * @since 0.0.1
-	 */
-	@Test
-	@Order(2)
-	void testGetChanges() {
-		assertTrue(manager.getChanges().isEmpty());
-		manager.addChange(change);
-		assertSame(1, manager.getChanges().size());
-		assertEquals(change, manager.getChanges().get(0));
-	}
-
-	/**
-	 * Test undoing a change.
-	 *
-	 * @since 0.0.1
-	 */
-	@Test
-	@Order(2)
-	void testUndo() {
-		assertFalse(manager.isUndoAvailable());
-		assertFalse(manager.undo());
-		manager.addChange(change);
-		assertTrue(manager.isUndoAvailable());
-		assertTrue(manager.undo());
-		assertFalse(manager.isUndoAvailable());
-		assertFalse(manager.undo());
-	}
-
-	/**
-	 * Tests redoing a change.
-	 *
-	 * @since 0.0.1
-	 */
-	@Test
-	@Order(4)
-	void testRedo() {
-		assertFalse(manager.isRedoAvailable());
-		assertFalse(manager.redo());
-		manager.addChange(change);
-		assertFalse(manager.isRedoAvailable());
-		assertFalse(manager.redo());
-		manager.undo();
-		assertTrue(manager.isRedoAvailable());
-		assertTrue(manager.redo());
-		assertFalse(manager.isRedoAvailable());
-		assertFalse(manager.redo());
-	}
-
-	/**
-	 * Tests marking a change.
-	 *
-	 * @since 0.0.1
-	 */
-	@Test
-	@Order(5)
-	void testMark() {
-		assertTrue(manager.isAtMarkedIndex());
-		manager.addChange(change);
-		assertFalse(manager.isAtMarkedIndex());
-		manager.mark();
-		assertTrue(manager.isAtMarkedIndex());
-		manager.undo();
-		assertFalse(manager.isAtMarkedIndex());
-	}
-}

core/src/test/java/dev/kske/undoredo/core/IntChange.java

@@ -1,31 +0,0 @@
-package dev.kske.undoredo.core;
-
-/**
- * @author Kai S. K. Engelbart
- * @since 0.0.1
- */
-class IntChange implements Change {
-
-	private final IntWrapper	wrapper;
-	private final int			value;
-
-	IntChange(IntWrapper wrapper, int value) {
-		this.wrapper	= wrapper;
-		this.value		= value;
-	}
-
-	@Override
-	public void apply() {
-		wrapper.value += value;
-	}
-
-	@Override
-	public Change invert() {
-		return new IntChange(wrapper, -value);
-	}
-
-	@Override
-	public boolean isIdentity() {
-		return value == 0;
-	}
-}

core/src/test/java/dev/kske/undoredo/core/IntWrapper.java

@@ -1,10 +0,0 @@
-package dev.kske.undoredo.core;
-
-/**
- * @author Kai S. K. Engelbart
- * @since 0.0.1
- */
-class IntWrapper {
-
-	int value;
-}

pom.xml

@@ -6,16 +6,11 @@
 	<groupId>dev.kske</groupId>
 	<artifactId>undo-redo</artifactId>
 	<version>0.0.1-SNAPSHOT</version>
-	<packaging>pom</packaging>
 
 	<name>Undo-Redo</name>
 	<description>A Java library for managing changes in an editor history.</description>
 	<url>https://git.kske.dev/kske/event-bus</url>
 
-	<modules>
-		<module>core</module>
-	</modules>
-
 	<licenses>
 		<license>
 			<name>Apache License, Version 2.0</name>
@@ -170,12 +165,8 @@
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
 				<version>3.0.0-M5</version>
-				<configuration>
-					<argLine>--add-opens dev.kske.undoredo.core/dev.kske.undoredo.core=ALL-UNNAMED</argLine>
-				</configuration>
 			</plugin>
 			
 		</plugins>
 	</build>
 </project>
-

src/main/java/dev/kske/undoredo/package-info.java

@@ -5,4 +5,4 @@
  * @author Kai S. K. Engelbart
  * @since 0.0.1
  */
-package dev.kske.undoredo.core;
+package dev.kske.undoredo;

src/main/java/module-info.java

@@ -5,7 +5,7 @@
  * @author Kai S. K. Engelbart
  * @since 0.0.1
  */
-module dev.kske.undoredo.core {
+module dev.kske.undoredo {
 
-	exports dev.kske.undoredo.core;
+	exports dev.kske.undoredo;
 }