void (boolean visible) { if (getModel().getSize() == 0 && visible) { return; } if (visible) { JBPopupFactory jbPopupFactory = getPopupFactory(); if (jbPopupFactory != null && jbPopupFactory.getChildFocusedPopup(this) != null) { return; } } boolean wasShown = isPopupVisible(); super.setPopupVisible(visible); if (!wasShown && visible && isEditable() && !UIManager.getBoolean("ComboBox.isEnterSelectablePopup")) { ComboBoxEditor editor = getEditor(); Object item = editor.getItem(), selectedItem = getSelectedItem(); if (item == null || item != selectedItem) { configureEditor(editor, selectedItem); } } }