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
event.detail = DND.DROP_COPY;
          }
        super.dragEnter(event);
    }
    /* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ViewerDropAdapter#dragOperationChanged(org.eclipse.swt.dnd.DropTargetEvent)
	 */
	public void dragOperationChanged(DropTargetEvent event) {
		super.dragOperationChanged(event);
	}
    /**
     * Returns an error status with the given info.
     */
    private IStatus error(String message) {
        return error(message, null);
    }
    /**
     * Returns an error status with the given info.
     */
    private IStatus error(String message, Throwable exception) {
        return new Status(IStatus.ERROR, PlatformUI.PLUGIN_ID, 0, message,
                exception);
    }
    /**
     * Returns the actual target of the drop, given the resource
     * under the mouse.  If the mouse target is a file, then the drop actually
     * occurs in its parent.  If the drop location is before or after the
     * mouse target and feedback is enabled, the target is also the parent.
     */