@Override
	public void requestFocus() {
		if (isEditable) {
			JTextField textField = getTextField();
			textField.requestFocus();
		}
		else {
			super.requestFocus();
		}

	}
Sets the selection end in the editor's text field.
@param selectionEnd the end of the selection
@see JTextField#setSelectionEnd(int)
Ghidra/Framework/Docking/src/main/java/docking/widgets/combobox/GhidraComboBox.java