展开 Datatable JSF 中表格行的折叠

问题描述

我一直在尝试使用核心 JSF 实现表格行展开/折叠的功能，而且我必须保留排序.在核心 JSF 中有没有办法实现这个功能?

I have been trying to achieve this functionality of expand/collapse of table rows using core JSF and also I have to preserve the sorting. Is there a way in core JSF where I can achieve this functionality?

推荐答案

如果你坚持只使用参考实现，那么你就不能使用嵌套的 h:dataTable 和/或 h:panelGroup 和一个 good 的 CSS 镜头，以使其很好地对齐.然后，您可以使用 JavaScript 以智能方式显示/隐藏行详细信息.

If you insist in using reference implementation only, then you can't go around using a nested h:dataTable and/or h:panelGroup and a good shot of CSS to get it aligned nicely. You can then use JavaScript the smart way to show/hide row details.

这是一个基本的开球示例:

Here's a basic kickoff example:

<h:dataTable value="#{bean.orders}" var="order">
    <h:column>
        <h:panelGrid columns="3">
            <h:graphicImage id="expand" value="expand.gif" onclick="toggleDetails(this);" />
            <h:outputText value="#{order.id}" />
            <h:outputText value="#{order.name}" />
        </h:panelGrid>
        <h:dataTable id="details" value="#{order.details}" var="detail" style="display: none;">
            <h:column><h:outputText value="#{detail.date}" /></h:column>
            <h:column><h:outputText value="#{detail.description}" /></h:column>
            <h:column><h:outputText value="#{detail.quantity}" /></h:column>
        </h:dataTable>
    </h:column>
</h:dataTable>

toggleDetails() 函数看起来像(注意它考虑了 JSF 生成的客户端 ID):

The toggleDetails() function can look like (note that it takes JSF generated client ID into account):

function toggleDetails(image) {
    var detailsId = image.id.substring(0, image.id.lastIndexOf(':')) + ':details';
    var details = document.getElementById(detailsId);
    if (details.style.display == 'none') {
        details.style.display = 'block';
        image.src = 'collapse.gif';
    } else {
        details.style.display = 'none';
        image.src = 'expand.gif';
    }
}

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