public boolean isEnabled(ProjectDocument item, ProjectDocument[] selectedItems) { String sourceString = PluginServices.getFromClipboard(); if (sourceString == null) return false; ProjectExtension projectExtension = (ProjectExtension) PluginServices.getExtension(ProjectExtension.class); Project project = projectExtension.getProject(); String docType = ((ProjectWindow) projectExtension.getProjectWindow()).getDocumentSelected(); return project.isValidXMLForImport(sourceString, docType); }