Visio javascript API - 无法 read/extract 塑造数据

Question

我无法检索基本的形状信息，最重要的信息是 .getBounds()。有了这个我就可以知道 (X, Y) 的位置以及形状的大小。

我现在只能检索到形状的名称和文本。

我正在使用这个 javascript Visio API。 https://docs.microsoft.com/en-us/javascript/api/visio?view=visio-js-1.1

这是我目前的代码。

 Visio.run(this.state.session, function (context) {
        var page = context.document.getActivePage();
        var shapes = page.shapes;
        shapes.load(); // This loads the shapes.

        // need to call context.sync() in order to actually read the shapes?
        return context.sync().then(function () {
            for (var i = 0; i < shapes.items.length; i++) {
                var shape = shapes.items[i];
                myShapes.push(shape);

                // At this point i know the shape's Name. 
                // but its .getBounds() is failing.
            }
        });

如何 get/invoke visio Shape 的 .getBounds() 方法？

我看到的错误（当我尝试执行 shape.getBounds() 时）是这样的：

RichApi.Error: The value of the result object has not been loaded yet. Before reading the value property, call "context.sync()" on the associated request context.

Answer 1

我找到了解决方案。一开始并不明显，直到我读了这篇文章。但本质上，我调用的任何方法 returns 都是 visio 代理的新实例。由于它是一个新实例，我需要再次调用 load/sync。

这里是article，实际上把事情说清楚了（不像微软提供的官方文档）。

参见名为 加载方法与属性的部分。

The reason that this is an error is that you are retrieving the object anew the second time when you reference it – and so you get a brand new proxy object, which has no knowledge of the information you loaded on its twin. This, by the way, is a very common mistake when working with collections: to first fetch collection.getItem("key") and call load on it, then sync, and then re-query collection.getItem("key") – with the latter being a brand new copy of the original object, which defeats the purpose of having loaded the item to begin with!

Visio javascript API - 无法 read/extract 塑造数据

Visio javascript API - Can't read/extract Shape data

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