});
stage.copyStacktraceButton.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent t) {
Clipboard clipboard = Clipboard.getSystemClipboard();
Map<DataFormat, Object> map = new HashMap<DataFormat, Object>();
map.put(DataFormat.PLAIN_TEXT, stage.stacktrace);
clipboard.setContent(map);
}
});
stage.showingProperty().addListener(new ChangeListener<Boolean>() {