JFile

// Default mode (BUTTON)
JFile fileUpload = new JFile();

// With specific mode
JFile fileUpload = new JFile(JFile.Mode mode);

public enum Mode {
    BUTTON,      // Standard upload button
    AVATAR,      // Circular avatar uploader (120x120)
    SQUARE,      // Square image uploader (120x120)
    DROP_ZONE    // Large drag-and-drop area
}

JFile fileUpload = new JFile();
fileUpload.setMaxFileSize(20 * 1024 * 1024); // 20 MB
fileUpload.getValidExtensions().addAll(".pdf", ".doc", ".docx");

fileUpload.getSelectedFiles().addListener(
    (ListChangeListener.Change<? extends File> c) -> {
        while (c.next()) {
            if (c.wasAdded()) {
                c.getAddedSubList().forEach(file -> 
                    System.out.println("Uploaded: " + file.getName())
                );
            }
        }
    }
);

JFile avatarUpload = new JFile(JFile.Mode.AVATAR);
avatarUpload.getValidExtensions().addAll(".png", ".jpg", ".jpeg");
avatarUpload.setMaxFileSize(2 * 1024 * 1024); // 2 MB
avatarUpload.setShowRemove(true);
avatarUpload.setShowEdit(true);

// Load existing avatar
File existingAvatar = user.getAvatarFile();
if (existingAvatar != null) {
    avatarUpload.setPreviewFromFile(existingAvatar);
}

// Listen for changes
avatarUpload.getSelectedFiles().addListener(
    (ListChangeListener.Change<? extends File> c) -> {
        if (!avatarUpload.getSelectedFiles().isEmpty()) {
            File newAvatar = avatarUpload.getSelectedFiles().get(0);
            uploadAvatarToServer(newAvatar);
        }
    }
);

JFile productImage = new JFile(JFile.Mode.SQUARE);
productImage.getValidExtensions().addAll(".png", ".jpg", ".webp");
productImage.setMaxFileSize(5 * 1024 * 1024); // 5 MB
productImage.setShowEdit(true);

// Set from URL
Image defaultImage = new Image(product.getImageUrl());
productImage.setPreviewImage(defaultImage);

JFile dropZone = new JFile(JFile.Mode.DROP_ZONE);
dropZone.setMaxFileCount(10);
dropZone.setMaxFileSize(50 * 1024 * 1024); // 50 MB per file
dropZone.getValidExtensions().addAll(".pdf", ".doc", ".xls", ".ppt");

dropZone.setPrefHeight(200);

dropZone.getSelectedFiles().addListener(
    (ListChangeListener.Change<? extends File> c) -> {
        int count = dropZone.getSelectedFiles().size();
        System.out.println(count + " files selected");
    }
);

public class UserProfileForm extends VBox {
    
    private final JTextField nameField;
    private final JTextField emailField;
    private final JFile avatarUpload;
    
    public UserProfileForm() {
        setSpacing(16);
        setPadding(new Insets(20));
        
        nameField = new JTextField();
        nameField.setPlaceholder("Full Name");
        
        emailField = new JTextField();
        emailField.setPlaceholder("Email Address");
        
        avatarUpload = new JFile(JFile.Mode.AVATAR);
        avatarUpload.getValidExtensions().addAll(".png", ".jpg");
        avatarUpload.setShowRemove(true);
        avatarUpload.setShowEdit(true);
        
        JLabel avatarLabel = new JLabel("Profile Picture");
        avatarLabel.addClass("text-sm", "font-bold");
        
        getChildren().addAll(
            new JLabel("Personal Information").addClass("text-lg", "font-bold"),
            nameField,
            emailField,
            avatarLabel,
            avatarUpload
        );
    }
    
    public void loadUser(User user) {
        nameField.setText(user.getName());
        emailField.setText(user.getEmail());
        if (user.getAvatarPath() != null) {
            avatarUpload.setPreviewFromFile(new File(user.getAvatarPath()));
        }
    }
    
    public void save() {
        User user = new User();
        user.setName(nameField.getText());
        user.setEmail(emailField.getText());
        
        if (!avatarUpload.getSelectedFiles().isEmpty()) {
            File avatar = avatarUpload.getSelectedFiles().get(0);
            user.setAvatar(avatar);
        }
        
        userService.save(user);
    }
}