feat(window): Add close button functionality to Window class and update DemoModule

src/main/java/de/extio/game_engine/renderer/container/Window.java

@@ -7,7 +7,10 @@ import de.extio.game_engine.event.EventService;
 import de.extio.game_engine.module.ModuleService;
 import de.extio.game_engine.renderer.RendererControl;
 import de.extio.game_engine.renderer.model.RenderingBoLayer;
+import de.extio.game_engine.renderer.model.bo.ControlRenderingBo;
+import de.extio.game_engine.renderer.model.bo.ControlRenderingBo.WindowCloseButtonControl;
 import de.extio.game_engine.renderer.model.bo.DrawWindowRenderingBo;
+import de.extio.game_engine.renderer.model.event.UiControlEvent;
 import de.extio.game_engine.renderer.work.RendererWorkingSet;
 import de.extio.game_engine.renderer.work.RenderingBoPool;
 
@@ -15,10 +18,25 @@ import de.extio.game_engine.renderer.work.RenderingBoPool;
 @Scope("prototype")
 public class Window extends Container {
 	
+	private boolean closeButton;
+
+	private String closeButtonName = "";
+	
+	private Runnable onCloseAction;
+	
 	public Window(final ModuleService moduleService, final RenderingBoPool renderingBoPool, final RendererControl rendererControl, final EventService eventService, final RendererWorkingSet rendererWorkingSet) {
 		super(moduleService, renderingBoPool, rendererControl, eventService, rendererWorkingSet);
 	}
 
+	@Override
+	public void onActivate() {
+		if (this.closeButton) {
+			this.eventService.register(UiControlEvent.class, this.getId(), this::onCloseButtonControlEvent);
+		}
+
+		super.onActivate();
+	}
+	
 	@Override
 	public void draw() {
 		if (this.area.getDimension().getX() <= 0 || this.area.getDimension().getY() <= 0) {
@@ -38,6 +56,55 @@ public class Window extends Container {
 				.setLayer(RenderingBoLayer.UI0_BGR);
 		this.rendererWorkingSet.put(this.id, windowFrame);
 		
+		if (this.closeButton) {
+			this.closeButtonName = this.id + "_CloseButton";
+			final var closeButtonBo = this.renderingBoPool.acquire(this.closeButtonName, ControlRenderingBo.class)
+					.setType(WindowCloseButtonControl.class)
+					.setCustomData(this.draggable)
+					.setEnabled(true)
+					.setVisible(true)
+					.withDimensionAbsolute(this.area.getDimension())
+					.withPositionAbsoluteAnchorTopLeft(this.area.getPosition())
+					.setLayer(RenderingBoLayer.UI0_1);
+			this.rendererWorkingSet.put(this.id, closeButtonBo);
+		}
+
 		super.draw();
 	}
+
+	private void onCloseButtonControlEvent(final UiControlEvent event) {
+		if (this.closeButton && this.closeButtonName.equals(event.getId())) {
+			if (this.onCloseAction != null) {
+				this.onCloseAction.run();
+			}
+			else {
+				this.getModuleService().changeActiveState(this.getId(), false);
+			}
+		}
+	}
+	
+	public boolean hasCloseButton() {
+		return closeButton;
+	}
+	
+	/**
+	 * Sets whether the window has a close button. Must be set before activation.
+	 */
+	public void setCloseButton(final boolean closeButton) {
+		this.closeButton = closeButton;
+	}
+
+	public Runnable getOnCloseAction() {
+		return onCloseAction;
+	}
+
+	/**
+	 * Sets the action to be performed when the close button is pressed.
+	 * If not set, the window module will simply be deactivated on close button press.
+	 * 
+	 * @param onCloseAction The action to be performed on close button press.
+	 */
+	public void setOnCloseAction(final Runnable onCloseAction) {
+		this.onCloseAction = onCloseAction;
+	}
 }

src/test/java/de/extio/game_engine/demo/DemoModule.java

@@ -50,6 +50,7 @@ public class DemoModule extends AbstractClientModule {
 		this.secondaryWindow.setNormalizedPosition(RendererControl.REFERENCE_RESOLUTION.divide(7).multiply(3));
 		this.secondaryWindow.setNormalizedDimension(RendererControl.REFERENCE_RESOLUTION.divide(7).multiply(2));
 		this.secondaryWindow.setDraggable(true);
+		this.secondaryWindow.setCloseButton(true);
 		
 		this.getModuleService().changeActiveState(this.getId(), true);
 		this.getModuleService().changeDisplayState(this.getId(), true);