当JSF中的下拉更改中存在未解决的输入时显示弹出窗口

<h:selectOneMenu value="#{bean.selectedOption}">
    <f:selectItems value="#{bean.options}" />
    <f:ajax listener="#{bean.handleOptionChange}" render="popup" />
</h:selectOneMenu>

<p:dialog id="popup" widgetVar="popupDialog" modal="true" header="未解决的输入">
    <!-- 弹出窗口内容 -->
</p:dialog>

@ManagedBean
@ViewScoped
public class Bean implements Serializable {
    private List<SelectItem> options;
    private String selectedOption;

    public Bean() {
        // 初始化选项列表
        options = new ArrayList<>();
        options.add(new SelectItem("option1", "选项1"));
        options.add(new SelectItem("option2", "选项2"));
        options.add(new SelectItem("option3", "选项3"));
    }

    public void handleOptionChange(AjaxBehaviorEvent event) {
        // 检查是否存在未解决的输入
        boolean unresolvedInputExists = checkUnresolvedInput();

        if (unresolvedInputExists) {
            // 显示弹出窗口
            PrimeFaces.current().executeScript("PF('popupDialog').show();");
        }
    }

    private boolean checkUnresolvedInput() {
        // 检查是否存在未解决的输入
        // 返回true或false
    }

    // getter和setter方法
}

<p:dialog id="popup" widgetVar="popupDialog" modal="true" header="未解决的输入">
    <h:form>
        <!-- 弹出窗口内容 -->
        <h:inputText value="#{bean.unresolvedInput}" />
        <p:commandButton value="保存" action="#{bean.saveUnresolvedInput}" />
    </h:form>
</p:dialog>

@ManagedBean
@ViewScoped
public class Bean implements Serializable {
    private String unresolvedInput;

    public void saveUnresolvedInput() {
        // 处理保存未解决的输入
    }

    // getter和setter方法
}