FileUpload.java

/*
 *  Copyright 2026, TeamDev. All rights reserved.
 *
 *  Redistribution and use in source and/or binary forms, with or without
 *  modification, must retain the above copyright notice and the following
 *  disclaimer.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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package com.teamdev.jxbrowser.examples;

import static com.teamdev.jxbrowser.engine.RenderingMode.HARDWARE_ACCELERATED;

import com.teamdev.jxbrowser.browser.callback.OpenFileCallback;
import com.teamdev.jxbrowser.engine.Engine;
import com.teamdev.jxbrowser.view.swing.BrowserView;
import java.awt.BorderLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.nio.file.Paths;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.WindowConstants;

/**
 * This example demonstrates how to register your OpenFileCallback and override the functionality
 * that displays file chooser when user uploads file using INPUT TYPE="file" HTML element on a web
 * page.
 */
public final class FileUpload {

    public static void main(String[] args) {
        var engine = Engine.newInstance(HARDWARE_ACCELERATED);
        var browser = engine.newBrowser();

        SwingUtilities.invokeLater(() -> {
            var view = BrowserView.newInstance(browser);

            var frame = new JFrame("File Upload");
            frame.addWindowListener(new WindowAdapter() {
                @Override
                public void windowClosing(WindowEvent e) {
                    engine.close();
                }
            });
            frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
            frame.add(view, BorderLayout.CENTER);
            frame.setSize(700, 500);
            frame.setLocationRelativeTo(null);
            frame.setVisible(true);
        });

        browser.set(OpenFileCallback.class, (params, tell) ->
                tell.open(Paths.get("file.txt")));

        browser.navigation().loadHtml("""
            Please specify a file, or a set of files:<br/>
            <input type='file' name='datafile' size='40' />
        """);
    }
}