Bug 301131 CreateGroupOperation, GroupDescription should be renamed or merged into existing classes
There are some remaining issues related to renamin Groups into Virtual Folders. org.eclipse.ui.internal.ide.undo.GroupDescription IMO should be merged with FolderDescription org.eclipse.ui.ide.undo.CreateGroupOperation should be merged with CreateFolderOperation IDEResourceInfoUtils#GROUP_TEXT org.eclipse.ui.wizards.datatransfer#ImportOperation#setCreateGroups Remy, if you see other related issues, please add a comment to the bug.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/navigator/NavigatorDropAdapter.java
ArrayList selectedResources = new ArrayList();
        ISelection selection = LocalSelectionTransfer.getInstance()
                .getSelection();
        if (selection instanceof IStructuredSelection) {
            IStructuredSelection ssel = (IStructuredSelection) selection;
            for (Iterator i = ssel.iterator(); i.hasNext();) {
                Object o = i.next();
                if (o instanceof IResource) {
                    selectedResources.add(o);
                }
                else if (o instanceof IAdaptable) {
                    IAdaptable a = (IAdaptable) o;
                    IResource r = (IResource) a.getAdapter(IResource.class);
                    if (r != null) {
                        selectedResources.add(r);
                    }
                }
            }
        }
        return (IResource[]) selectedResources.toArray(new IResource[selectedResources.size()]);
    }
    /**
     * Returns the shell
     */
    private Shell getShell() {
        return getViewer().getControl().getShell();
    }
    /**
     * Returns an error status with the given info.
     */