Bug 312540 [LinkedResources] Copy resource in Navigator and Project Explorer always shows dialog
N20100511-2000. When copying an IFile from one to another folder in the Navigator or Project Explorer, I always get the dialog no matter how I've set the preferences on the 'Linked Resources' page (even if I disable linked resources).
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/navigator/NavigatorDropAdapter.java
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.
     */
    private IStatus info(String message) {
        return new Status(IStatus.INFO, PlatformUI.PLUGIN_ID, 0, message, null);
    }