代写代考 package finalproject.system;

package finalproject.system;

import javafx.scene.control.ScrollPane;
import javafx.scene.layout.VBox;

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import javafx.scene.paint.Color;
import javafx.scene.text.Text;

public class Logger {
private static Logger instance;
private VBox textPanel;
private ScrollPane scrollPanel;
private boolean showSystemLog;

private Logger () {
showSystemLog = true;

public static Logger getInstance() {
if (instance == null)
instance = new Logger();
return instance;

public void init(VBox panel, ScrollPane scroll) {
if (textPanel == null)
textPanel = panel;
if (scrollPanel == null)
scrollPanel = scroll;

public void logMessage(String msg) {
Text t = new Text(msg);
t.setFill(Color.BLACK);
t.getStyleClass().add(“logText”);
textPanel.getChildren().add(t);
scrollPanel.setVvalue(1.0);

public void logSystemMessage(String msg) {
if (!showSystemLog) return;
Text t = new Text(“[System] ” + msg);
t.setFill(Color.web(“#8aa9d4”));
t.getStyleClass().add(“logText”);
textPanel.getChildren().add(t);
scrollPanel.setVvalue(1.0);

public void logErrorMessage(String msg) {
if (!showSystemLog) return;
Text t = new Text(“[Error] ” + msg);
t.setFill(Color.RED);
t.getStyleClass().add(“logText”);
textPanel.getChildren().add(t);
scrollPanel.setVvalue(1.0);

public void toggleSystemLog() {
showSystemLog = !showSystemLog;

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