to-do-list-app-using-java/TodoListAppGUI.java at main · SAICHARAN1205/to-do-list-app-using-java · GitHub

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package src;
import javax.swing.*;
import javax.swing.border.EmptyBorder;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;

public class TodoListAppGUI {

        private JFrame frame;
        private JPanel taskListPanel;
        private ArrayList<JPanel> taskItems;

        public TodoListAppGUI() {
            frame = new JFrame("Java To-Do List");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setSize(500, 600);
            frame.setMinimumSize(new Dimension(400, 400));
            frame.setLocationRelativeTo(null);
            JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
            mainPanel.setBorder(new EmptyBorder(15, 15, 15, 15));
            JLabel titleLabel = new JLabel("My To-Do List", SwingConstants.CENTER);
            titleLabel.setFont(new Font("Arial", Font.BOLD, 24));
            mainPanel.add(titleLabel, BorderLayout.NORTH);
            JPanel inputPanel = new JPanel(new BorderLayout(5, 5));
            JTextField taskInputField = new JTextField();
            taskInputField.setFont(new Font("Arial", Font.PLAIN, 16));
            JButton addTaskButton = new JButton("Add Task");
            addTaskButton.setFont(new Font("Arial", Font.BOLD, 14));
            addTaskButton.setBackground(new Color(59, 130, 246)); // Tailwind's blue-500
            addTaskButton.setForeground(Color.WHITE);
            addTaskButton.setFocusPainted(false);
            addTaskButton.setBorder(BorderFactory.createEmptyBorder(8, 16, 8, 16));

            inputPanel.add(taskInputField, BorderLayout.CENTER);
            inputPanel.add(addTaskButton, BorderLayout.EAST);

            mainPanel.add(inputPanel, BorderLayout.SOUTH);
            taskItems = new ArrayList<>();
            taskListPanel = new JPanel();
            taskListPanel.setLayout(new BoxLayout(taskListPanel, BoxLayout.Y_AXIS));
            JScrollPane scrollPane = new JScrollPane(taskListPanel);
            scrollPane.setBorder(BorderFactory.createEmptyBorder());
            scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);

            mainPanel.add(scrollPane, BorderLayout.CENTER);
            ActionListener addTaskListener = new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e) {
                    String taskText = taskInputField.getText().trim();
                    if (!taskText.isEmpty()) {
                        addTask(taskText);
                        taskInputField.setText("");
                    }
                }
            };
            addTaskButton.addActionListener(addTaskListener);
            taskInputField.addActionListener(addTaskListener);

            frame.add(mainPanel);
            frame.setVisible(true);
        }
        private void addTask(String taskText) {
            JPanel taskPanel = new JPanel();
            taskPanel.setLayout(new BorderLayout(5, 5));
            taskPanel.setBorder(BorderFactory.createCompoundBorder(
                    BorderFactory.createMatteBorder(0, 0, 1, 0, Color.lightGray),
                    BorderFactory.createEmptyBorder(10, 10, 10, 10)
            ));
            JCheckBox completeCheckbox = new JCheckBox();
            completeCheckbox.addActionListener(e -> {
                JLabel label = (JLabel) taskPanel.getComponent(1);
                if (completeCheckbox.isSelected()) {
                    label.setText("<html><strike>" + label.getText() + "</strike></html>");
                    label.setForeground(Color.GRAY);
                } else {
                    String originalText = label.getText().replace("<html><strike>", "").replace("</strike></html>", "");
                    label.setText(originalText);
                    label.setForeground(Color.BLACK);
                }
            });
            JLabel taskLabel = new JLabel(taskText);
            taskLabel.setFont(new Font("Arial", Font.PLAIN, 16));

            JButton deleteButton = new JButton("Delete");
            deleteButton.setFont(new Font("Arial", Font.BOLD, 12));
            deleteButton.setBackground(new Color(239, 68, 68)); // Tailwind's red-500
            deleteButton.setForeground(Color.WHITE);
            deleteButton.setFocusPainted(false);
            deleteButton.setBorder(BorderFactory.createEmptyBorder(5, 10, 5, 10));
            deleteButton.addActionListener(e -> {
                taskListPanel.remove(taskPanel);
                taskItems.remove(taskPanel);
                taskListPanel.revalidate();
                taskListPanel.repaint();
            });

            taskPanel.add(completeCheckbox, BorderLayout.WEST);
            taskPanel.add(taskLabel, BorderLayout.CENTER);
            taskPanel.add(deleteButton, BorderLayout.EAST);

            taskItems.add(taskPanel);
            taskListPanel.add(taskPanel);
            taskListPanel.revalidate();
            taskListPanel.repaint();
        }
        public static void main(String[] args) {
            SwingUtilities.invokeLater(new Runnable() {
                @Override
                public void run() {
                    new TodoListAppGUI();
                }
            });
        }
    }