Flex 4 PrintDataGrid validNextPage 不起作用

发布于 2024-12-01 16:18:50 字数 746 浏览 2 评论 0原文

我正在尝试为 Flex 创建一个报告查看器。报告将从 PrintDataGrid 构建，因为它是 Flex 中唯一通过 validNextPage 和 nextPage() 支持多页的组件。

基本上，我试图通过以下代码填充报告页面的集合：

var index:int = 0;
dataProvider = new ArrayCollection();
do {
    var rep:Report = new Report();
    rep.height = 841;
    rep.width = 595;
    rep.pageNumber = index + 1;

    var i:int = index;
    while (i > 0) {
        rep.nextPage();
        i--;
    }

    dataProvider.addItem(rep);
    index++;
} while (rep.validNextPage);

我的问题是我陷入了无限循环，因为 validNextPage 始终返回 true。我正在尝试做一些不可能的事情吗？我看到了一些将报告页面添加到 FlexPrintJob 的示例，但我从未见过将报告页面添加到屏幕上的组件的示例。

我遇到的另一个问题是，该报告应该是动态的（可排序），但我无法将相同的报告添加到两个父级，因此我在每次迭代时创建一个新报告（但这在我尝试对报告进行排序时会出现问题）因为我将有此报告的几个实例）

有人知道如何做到这一点吗？

原文

I'm trying to create a report viewer for flex.
The reports will be built from a PrintDataGrid since it's the only component in flex that supports multi-pages through validNextPage and nextPage().

Basically, I'm trying to populate a collection of the report pages through the following code:

var index:int = 0;
dataProvider = new ArrayCollection();
do {
    var rep:Report = new Report();
    rep.height = 841;
    rep.width = 595;
    rep.pageNumber = index + 1;

    var i:int = index;
    while (i > 0) {
        rep.nextPage();
        i--;
    }

    dataProvider.addItem(rep);
    index++;
} while (rep.validNextPage);

My problem is that I get stuck in an endless loop since validNextPage returns true all the time.
Am I trying to do something impossible? I saw some examples of adding a report page to FlexPrintJob but I've never seen an example of adding a report page to a component on the screen.

Another issue that I have is that this report should be dynamic (sortable) but I can't add the same report to 2 parents, hence I create a new Report on every iteration (but that will become problematic as I try to sort the report since i'll have several instances of this report)

Anyone has any idea how to do it?

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