Show label under icon in toolbar buttons

[Marco Rossi <ma...@markreds.it>]

Hello,
In my RCP application I would like to get a toolbar that shows the action label under the icon of each button (similar to Mac OS applications).

I’ve found this post https://blogs.oracle.com/geertjan/custom-tabbed-toolbar-with-corporate-image-and-central-registry-integration <https://blogs.oracle.com/geertjan/custom-tabbed-toolbar-with-corporate-image-and-central-registry-integration> that I’ve adapted to my needs and it works except for that actions with a Presenter.Toolbar that is not a button (for example the QuickSearch and other custom actions similar to https://platform.netbeans.org/tutorials/70/nbm-google.html <https://platform.netbeans.org/tutorials/70/nbm-google.html>). In that cases I’m unable to show the components in the toolbar.

Maybe is there another way to achieve this?

Here is my code:

public abstract class ToolbarComponentProvider {
    
    public abstract JComponent createToolbar();
    
    public static ToolbarComponentProvider getDefault() {
        ToolbarComponentProvider provider = Lookup.getDefault().lookup(ToolbarComponentProvider.class);
        if (provider == null) {
            provider = new DefaultToolbarComponentProvider();
        }
        return provider;
    }
    
    private static class DefaultToolbarComponentProvider extends ToolbarComponentProvider {
        
        private Icon loadIconBaseWithExtension(String base, String extension, int size) {
            String resourceID =  base + size + extension;
            Image image = ImageUtilities.loadImage(resourceID);
            return (image != null) ? new ImageIcon(image) : null;
        }
        
        private JButton createButton(Action action) {
            JButton button = new JButton(action);
            button.setFocusable(false);
            button.setBorderPainted(false);
            button.setMargin(new java.awt.Insets(0, 2, 0, 2));
            button.setText(Actions.cutAmpersand( (String) action.getValue(Action.NAME)));
            
            String iconBase = (String) action.getValue("iconBase");
            if (iconBase != null) {
                int lastDot = iconBase.lastIndexOf('.');
                int lastSlash = iconBase.lastIndexOf('/');
                
                if ((lastSlash > lastDot) || (lastDot == -1)) { // no .extension
                    button.setIcon(loadIconBaseWithExtension(iconBase, "", 24));
                } else {
                    String base = iconBase.substring(0, lastDot);
                    String ext = iconBase.substring(lastDot);
                    button.setIcon(loadIconBaseWithExtension(base, ext, 24));
                }
                
                button.setVerticalTextPosition(SwingConstants.BOTTOM);
                button.setHorizontalTextPosition(SwingConstants.CENTER);
            }
                
            return button;
        }
        
        @Override
        public JComponent createToolbar() {
//            ToolbarPool.getDefault().waitFinished();
//            return ToolbarPool.getDefault();
            
            JPanel container = new JPanel(new FlowLayout(FlowLayout.LEFT, 0, 0));
            FileObject fo = FileUtil.getConfigFile("Toolbars");
            for (FileObject parent : FileUtil.getOrder(Arrays.asList(fo.getChildren()), true)) {
                if (parent.isFolder()) {
                    int count = 0;
                    JToolBar toolbar = new JToolBar(parent.getName());
                    for (FileObject child : FileUtil.getOrder(Arrays.asList(parent.getChildren()), true)) {
                        try {
                            DataObject dataObj = DataObject.find(child);
                            Object instanceObj;
                            InstanceCookie ic = dataObj.getLookup().lookup(InstanceCookie.class);
                            try {
                                instanceObj = ic.instanceCreate();
                            } catch (IOException | ClassNotFoundException ex) {
                                instanceObj = null;
                            }
                            if (instanceObj instanceof Action) {
                                Action action = (Action) instanceObj;
                                if (instanceObj instanceof Presenter.Toolbar) {
                                    Component component = ( (Presenter.Toolbar) instanceObj).getToolbarPresenter();
                                    if (component instanceof JPanel) {
                                        // adding the component to toolbar but it never show
                                        toolbar.add(component);
                                        count++;
                                        continue;
                                    }
                                }
                                toolbar.add(createButton(action));
                                count++;
                            }
                        } catch (DataObjectNotFoundException ex) {
                            Logger.getLogger(ToolbarComponentProvider.class.getName()).severe(ex.getMessage());
                        }
                    }
                    if (count > 0) {
                        toolbar.add(new JSeparator(SwingConstants.VERTICAL));
                        toolbar.setFloatable(Boolean.TRUE.equals(parent.getAttribute("draggable")));
                        container.add(parent.getName(), toolbar);
                    }                        
                }
            }
            
            return container;
        }
        
    }
    
}

Mark Reds