Get key combination code of multiple keys - javafx

Question

I want to ask you can I get key code combination of multiple keys. For example I can get the key code from this example:
public void handle(KeyEvent event) {
if (event.getCode() == KeyCode.TAB) {
}
}
But how I can get the key code of this example:
textField.setText("");
// Process only desired key types
if (event.getCode().isLetterKey()
|| event.getCode().isDigitKey()
|| event.getCode().isFunctionKey()) {
String shortcut = event.getCode().getName();
if (event.isAltDown()) {
shortcut = "Alt + " + shortcut;
}
if (event.isControlDown()) {
shortcut = "Ctrl + " + shortcut;
}
if (event.isShiftDown()) {
shortcut = "Shift + " + shortcut;
}
textField.setText(shortcut);
shortcutKeyEvent = event;
} else {
shortcutKeyEvent = null;
}
Is it possible to get the key code combination of these keys Ctrl + Tab or Ctrl + A?

Answer 1

No, the handled keyEvent has only one main KeyCode, for example this code
public void handle(KeyEvent event) {
if (event.getCode() == KeyCode.TAB) {
}
}
will handle TAB, ALT + TAB, or CTRL + TAB etc. If you only interested in CTRL + TAB, you have 2 choices:
1) using isControlDown()
public void handle(KeyEvent event) {
if (event.getCode() == KeyCode.TAB && event.isControlDown()) {
}
}
2) using KeyCodeCombination
final KeyCombination kb = new KeyCodeCombination(KeyCode.TAB, KeyCombination.CONTROL_DOWN);
...
...
public void handle(KeyEvent event) {
if (kb.match(event)) {
}
}

Answer 2

I Don't see directly there is any way except Menus
but still We can handle multi key event e.g. Ctrl + S by below work around.
at controller class level keep
public static boolean halfCtrlSPressed=false;
and in Event filter add logic as
if(ke.getCode().getName() == "Ctrl") {
halfCtrlSPressed=true;
}else if(ke.getCode().getName() == "S" && halfCtrlSPressed) {
halfCtrlSPressed=false;
//doDomething
}