private void updateCapLockWarning() {
		try {
			boolean capsLockOn =
				Toolkit.getDefaultToolkit().getLockingKeyState(KeyEvent.VK_CAPS_LOCK);
			if (capsLockOn) {
				setStatusText("Warning! Caps-Lock is on", MessageType.WARNING);
			}
			else {
				clearStatusText();
			}
		}
		catch (UnsupportedOperationException e) {
			// unable to detect caps-lock
		}
	}
Simple dialog with single input field to prompt user for password.
<p>
User can cancel, or cancel-all, which can be determined by inspecting
the value of the semi-visible member variables.
<p>
Treat this as an internal detail of PopupGUIPasswordProvider.
Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/crypto/PasswordDialog.java