Adding JCEF Browser in jPanel within Netbeans Platform Application

Question

I'm working on a Netbeans Platform application running on Java 11 in which I'd like to use the chromium browser from the JCEF project. ( org.jcef )

I've already implemented the browser within an org.openide.windows.TopComponent and that works just fine by implementing it in the constructor like so:

public BrowserTopComponent() {
        initComponents();

        CefSettings settings = new CefSettings();
        settings.windowless_rendering_enabled = false;

        File jcef_helper = InstalledFileLocator.getDefault().locate(
                "modules/lib/jcef_helper.exe",
                "com.mycompany.nbm.browser",
                false);
        settings.browser_subprocess_path = jcef_helper.getAbsolutePath();
        modules_path = jcef_helper.getAbsolutePath().split("modules")[0] + "modules";

        cefApp_ = CefApp.getInstance(settings);

        client_ = cefApp_.createClient();

        browser_ = client_.createBrowser(HOME, false, false);
        browerUI_ = browser_.getUIComponent();

        add(browerUI_, BorderLayout.CENTER);
    }

Now I'd like to include the browser in another TopComponent but not in its entire area, but instead within just one jPanel .

Theoretically that should be possible by exchanging add(browerUI_, BorderLayout.CENTER); from the previous code with:

jPanelBrowser.add(browerUI_, BorderLayout.CENTER);
jPanelBrowser.validate();

That however did not work at all. It doesn't throw any errors, it just doesn't do anything.

If anyone has any experience in making jcef work in such a scenario, any help would be greatly appreciated!

Answer 1

I ran into a similar issue and found that when you are adding it to a JPanel you have to set the size of the client.

client_.setSize(800, 600)

Once I did that it showed for me.