StyledListBox.java 文件源码

public StyledListBox(boolean isMultipleSelect) {
    super();
    setStyleName("form-control");
    setMultipleSelect(isMultipleSelect);
    addChangeHandler(new ChangeHandler() {

        @Override
        public void onChange(ChangeEvent event) {
            if (!isMultipleSelect()) {
                int selected = getSelectedIndex();
                if (selected == -1) {
                    setValue(null, true);
                } else {
                    setValue(associatedValues.get(selected), true);
                }
            }
        }

    });
}