DarkLaf equivalent of "File breadcrumbs"

[GraxCode]

General description

This component was included in WebLaF under the name "File breadcrumbs". I am looking for a darklaf implementation. Is there one?

Additional context
Intellij also has such a bar. Examples here:

[weisJ]

I'm currently writing a library swingdsl containing several quality of life enhancements for developing swing applications. It also contains a BreadcrumbBar implementation. Though it currently doesn't provide the popup mechanism from WebLaf or IntelliJ, this is something I can add (including some specialized version for Files).

[weisJ]

I think the most convenient way to do this would be to connect the breadcrumb bar with a TreeModel, where clicking an element opens a popup with all children. Do you already have a tree model of the folder structure at hand?

[GraxCode]

I don't. I intend to use it as a simple file browsing tool (as in intellij).

[weisJ]

I see. Luckily I already have a TreeModel for file structures at hand 😄

[weisJ]

With the latest snapshot version of swing.dsl there is now a BreadcrumbBar for files available.

Here is a short working example of how to use it:

fun main() = onSwingThread {
    LafManager.install()
    frame {
        content {
            borderPanel {
                val fsv = FileSystemView.getFileSystemView()
                val rootFiles = fsv.getFiles(fsv.roots[0], true)
                val fileTree = FileTree(showHiddenFiles = false, *rootFiles)
                fileTree.setSelectionRow(0)
                north {
                    +createFileBreadcrumbBar(fileTree)
                }
                center {
                    scrollPane { +fileTree }
                }
            }
        }
        centerOnScreen()
        visible = true
    }
}

Note that the FileTree implementation populates it's content lazily, which may result in a tiny amount of wait before child nodes are visible, even for small directories. I'll probably add support for pre-fetching directories up to a certain depth further down the road.
Also the popup, which is displayed, when clicking a folder in the breadcrumbs currently isn't limited in it's size. Eventually this will make use of the scrollable popups available in darklaf.

[GraxCode]

Is this also usable using a down-to-earth java swing application? I really appreciate your work. Thank you very much.

[weisJ]

Yes :). Here is the equivalent Java code:

SwingUtilities.invokeLater(() -> {
    LafManager.install();

    JFrame frame = new JFrame();
    JPanel content = new JPanel(new BorderLayout());

    FileSystemView fsv = FileSystemView.getFileSystemView();
    File[] rootFiles = fsv.getFiles(fsv.getRoots()[0], true);
    FileTree fileTree = new FileTree(false, rootFiles);

    content.add(FileBreadcrumbBar.create(fileTree), BorderLayout.NORTH);
    content.add(new JScrollPane(fileTree), BorderLayout.CENTER);
    frame.setContentPane(content);
    frame.pack();

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
});

[GraxCode]

Do I have to add swing-dsl as a library? Is it on maven / jitpack?

[weisJ]

The library is available on maven: https://search.maven.org/artifact/com.github.weisj/swing-dsl
Though the file breadcrumbs aren’t yet available in a released version, so you‘ll need to use a snapshot version.

[GraxCode]

I don't really want to add an unnecessary library to my project for a look and feel class. It would be nicer to have it as a darklaf implementation, but that's probably going to eat some time as it is written in kotlin i assume.

[weisJ]

I'll try to see whether it's feasible to port it to a standalone Java library.

[weisJ]

What I’ll do for now is to extract the components into a separate library. Of course this will still pull in the kotlin stdlib (which isn’t too big), but will allow me to rewrite the components in java once I find time for it.

[weisJ]

I have now done that. The coordinates are:

implementation("com.github.weisj:swing-extensions-components:latest.integration")

[GraxCode]

Wow, that's pretty amazing! Will try it out when I have time.

[GraxCode]

Getting a java.lang.ClassNotFoundException: com.github.weisj.darklaf.icons.IconLoader when trying to use with 3.0.0.

[weisJ]

Please try implementation("com.github.weisj:swing-extensions-components:0.2.0-SNAPSHOT"). If it works I'll release it as a stable version.

[GraxCode]

Seems to work now. (I only tested the breadcrumb stuff.)

[GraxCode]

I am still not sure how to implement a BreadcrumbBar correctly with my own tree structure.

[weisJ]

Here is an example

DefaultMutableTreeNode root = new DefaultMutableTreeNode();
root.add(new DefaultMutableTreeNode("Child 1"));
root.add(new DefaultMutableTreeNode("Child 2"));
TreeModel treeModel = new DefaultTreeModel(root);
JTree tree = new JTree(treeModel);
TreeBreadCrumbModel<DefaultMutableTreeNode, String> breadCrumbModel = new TreeBreadCrumbModel<>(
    tree, treeNode -> (String) treeNode.getUserObject());
BreadcrumbBar<DefaultMutableTreeNode, String> breadcrumbBar = new BreadcrumbBar<>(breadCrumbModel);