import java.awt.BorderLayout;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import javax.swing.ActionMap;
import javax.swing.text.DefaultEditorKit;
import org.openide.awt.ActionID;
import org.openide.awt.ActionReference;
import org.openide.explorer.ExplorerManager;
import org.openide.explorer.ExplorerUtils;
import org.openide.explorer.view.BeanTreeView;
import org.openide.filesystems.FileObject;
import org.openide.filesystems.FileUtil;
import org.openide.loaders.DataFolder;
import org.openide.loaders.DataObject;
import org.openide.loaders.DataObjectNotFoundException;
import org.openide.nodes.FilterNode;
import org.openide.nodes.Node;
import org.openide.util.NbBundle;
import org.openide.windows.TopComponent;
@TopComponent.Description(
preferredID = "FileBrowserTopComponent", persistenceType = TopComponent.PERSISTENCE_ALWAYS)
@TopComponent.Registration( mode = "explorer", openAtStartup = true)
@ActionID( category = "Window", id = "com.mycompany.FileBrowserTopComponent")
@ActionReference( path = "Menu/Window")
@TopComponent.OpenActionRegistration( displayName = "#CTL_FileBrowserTopComponentAction", preferredID = "FileBrowserTopComponent")
@NbBundle.Messages({ "CTL_FileBrowserTopComponentAction=Open File Browser", "CTL_FileBrowserTopComponent=File Browser",
})
public class FileBrowserTopComponent extends TopComponent implements ExplorerManager.Provider { private ExplorerManager mgr = new ExplorerManager(); public FileBrowserTopComponent() throws DataObjectNotFoundException { setDisplayName(Bundle.CTL_FileBrowserTopComponent()); setLayout(new BorderLayout()); add(new BeanTreeView(), BorderLayout.CENTER); File file = new File(System.getProperty("user.home")); FileObject fo = FileUtil.toFileObject(FileUtil.normalizeFile(file)); DataObject dob = DataObject.find(fo); Node rootNode = dob.getNodeDelegate(); mgr.setRootContext(new FileFilterNode(rootNode)); ActionMap map = this.getActionMap(); map.put(DefaultEditorKit.copyAction, ExplorerUtils.actionCopy(mgr)); map.put(DefaultEditorKit.cutAction, ExplorerUtils.actionCut(mgr)); map.put(DefaultEditorKit.pasteAction, ExplorerUtils.actionPaste(mgr)); map.put("delete", ExplorerUtils.actionDelete(mgr, true)); // or false associateLookup(ExplorerUtils.createLookup(mgr, map)); } @Override public ExplorerManager getExplorerManager() { return mgr; } public class FileFilterNode extends FilterNode { public FileFilterNode(Node original) { super(original, new FileFilterNodeChildren(original)); } //Override e.g., icons here... } public class FileFilterNodeChildren extends FilterNode.Children { public FileFilterNodeChildren(Node original) { super(original); } @Override protected Node[] createNodes(Node object) { List<Node> result = new ArrayList<Node>(); for (Node node : super.createNodes(object)) { if (accept(node)) { result.add(node); } } return result.toArray(new Node[0]); } //Example filter for children, e.g., don't include if folder: private boolean accept(Node node) { return node.getLookup().lookup(DataFolder.class) == null; } }
}Thanks to Tim Boudreau for help with the above.