Component pattern

component/pom.xml

@@ -1,65 +1,15 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-    This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
-
-    The MIT License
-    Copyright © 2014-2022 Ilkka Seppälä
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in
-    all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-    THE SOFTWARE.
-
--->
-<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">
-    <parent>
-        <artifactId>java-design-patterns</artifactId>
-        <groupId>com.iluwatar</groupId>
-        <version>1.26.0-SNAPSHOT</version>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
-
-    <artifactId>component</artifactId>
-    <dependencies>
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-api</artifactId>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-assembly-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <configuration>
-                            <archive>
-                                <manifest>
-                                    <mainClass>com.iluwatar.component.App</mainClass>
-                                </manifest>
-                            </archive>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>
-        </plugins>
-    </build>
-</project>
+<dependencies>
+    <!-- JUnit 5 Dependency -->
+    <dependency>
+        <groupId>org.junit.jupiter</groupId>
+        <artifactId>junit-jupiter-api</artifactId>
+        <version>5.8.2</version>
+        <scope>test</scope>
+    </dependency>
+    <dependency>
+        <groupId>org.junit.jupiter</groupId>
+        <artifactId>junit-jupiter-engine</artifactId>
+        <version>5.8.2</version>
+        <scope>test</scope>
+    </dependency>
+</dependencies>

component/src/main/java/com/iluwatar/component/FirstTask.java

@@ -0,0 +1,36 @@
+package com.iluwatar.component;
+public class FirstTask implements Task {
+  private String title;
+
+  public FirstTask(String title) {
+    this.title = title;
+  }
+
+  @Override
+  public String getTitle() {
+    return title;
+  }
+
+  @Override
+  public void setTitle(String title) {
+    this.title = title;
+  }
+
+  @Override
+  public void addTask(Task task) {
+    // Not applicable for FirstTask, as it's a leaf node.
+  }
+
+  @Override
+  public void removeTask(Task task) {
+    // Not applicable for FirstTask, as it's a leaf node.
+  }
+
+  @Override
+  public void display() {
+    System.out.println("FirstTask: " + title);
+  }
+}
+
+
+

component/src/main/java/com/iluwatar/component/GameObject.java

@@ -1,118 +1 @@
-/*
- * This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
- *
- * The MIT License
- * Copyright © 2014-2022 Ilkka Seppälä
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-package com.iluwatar.component;
 
-import com.iluwatar.component.component.graphiccomponent.GraphicComponent;
-import com.iluwatar.component.component.graphiccomponent.ObjectGraphicComponent;
-import com.iluwatar.component.component.inputcomponent.DemoInputComponent;
-import com.iluwatar.component.component.inputcomponent.InputComponent;
-import com.iluwatar.component.component.inputcomponent.PlayerInputComponent;
-import com.iluwatar.component.component.physiccomponent.ObjectPhysicComponent;
-import com.iluwatar.component.component.physiccomponent.PhysicComponent;
-import lombok.Getter;
-import lombok.RequiredArgsConstructor;
-
-/**
- * The GameObject class has three component class instances that allow
- * the creation of different game objects based on the game design requirements.
- */
-@Getter
-@RequiredArgsConstructor
-public class GameObject {
-  private final InputComponent inputComponent;
-  private final PhysicComponent physicComponent;
-  private final GraphicComponent graphicComponent;
-
-  private final String name;
-  private int velocity = 0;
-  private int coordinate = 0;
-
-  /**
-   * Creates a player game object.
-   *
-   * @return player object
-   */
-  public static GameObject createPlayer() {
-    return new GameObject(new PlayerInputComponent(),
-        new ObjectPhysicComponent(),
-        new ObjectGraphicComponent(),
-        "player");
-  }
-
-
-  /**
-   * Creates a NPC game object.
-   *
-   * @return npc object
-   */
-  public static GameObject createNpc() {
-    return new GameObject(
-            new DemoInputComponent(),
-        new ObjectPhysicComponent(),
-        new ObjectGraphicComponent(),
-        "npc");
-  }
-
-  /**
-   * Updates the three components of the NPC object used in the demo in App.java
-   * note that this is simply a duplicate of update() without the key event for
-   * demonstration purposes.
-   *
-   * <p>This method is usually used in games if the player becomes inactive.
-   */
-  public void demoUpdate() {
-    inputComponent.update(this, 0);
-    physicComponent.update(this);
-    graphicComponent.update(this);
-  }
-
-  /**
-   * Updates the three components for objects based on key events.
-   *
-   * @param e key event from the player.
-   */
-  public void update(int e) {
-    inputComponent.update(this, e);
-    physicComponent.update(this);
-    graphicComponent.update(this);
-  }
-
-  /**
-   * Update the velocity based on the acceleration of the GameObject.
-   *
-   * @param acceleration the acceleration of the GameObject
-   */
-  public void updateVelocity(int acceleration) {
-    this.velocity += acceleration;
-  }
-
-
-  /**
-   * Set the c based on the current velocity.
-   */
-  public void updateCoordinate() {
-    this.coordinate += this.velocity;
-  }
-}

component/src/main/java/com/iluwatar/component/Task.java

@@ -0,0 +1,10 @@
+package com.iluwatar.component;
+
+public interface Task {
+  String getTitle();
+  void setTitle(String title);
+  void addTask(Task task);
+  void removeTask(Task task);
+  void display();
+}
+

component/src/main/java/com/iluwatar/component/TaskFactory.java

@@ -0,0 +1,14 @@
+package com.iluwatar.component;
+
+public class TaskFactory {
+
+  // Creates and returns a simple task
+  public static Task createFirstTask(String title) {
+    return new FirstTask(title);
+  }
+
+  // Creates and returns a task list
+  public static TaskList createTaskList(String title) {
+    return new TaskList(title);
+  }
+}

component/src/main/java/com/iluwatar/component/TaskList.java

@@ -0,0 +1,46 @@
+package com.iluwatar.component;
+import java.util.ArrayList;
+import java.util.List;
+
+public class TaskList implements Task {
+  private String title;
+  private final List<Task> tasks;
+
+  public TaskList(String title) {
+    this.title = title;
+    this.tasks = new ArrayList<>();
+  }
+
+  @Override
+  public String getTitle() {
+    return title;
+  }
+
+  @Override
+  public void setTitle(String title) {
+    this.title = title;
+  }
+
+  @Override
+  public void addTask(Task task) {
+    tasks.add(task);
+  }
+
+  @Override
+  public void removeTask(Task task) {
+    tasks.remove(task);
+  }
+
+  @Override
+  public void display() {
+    System.out.println("Task List: " + title);
+    for (Task task : tasks) {
+      task.display();
+    }
+  }
+
+  // Getter method for testing
+  public List<Task> getTasks() {
+    return tasks;
+  }
+}