java - 需要帮助点击阴影Root(闭合)类型下的元素

Question

单击位于阴影根内部的元素时出现空指针异常(已关闭)

尝试用 Java 脚本处理它:

public WebElement getShadowRootElement(WebElement element) {
    return (WebElement)
            ((JavascriptExecutor)
                    driver).executeScript("return 
arguments[0].shadowRoot", element);
}

结果:

Cannot read property 'shadowRoot' of null

添加了屏幕截图:1.

Answer 1

如果您的用例是与 <path> 交互<svg> 内的元素标签，确实在 #shadow-root (closed) 内。

@hayatoito(Shadow DOM 的创建者)在 comment明确提到:

The original motivation of introducing a closed shadow tree is "Never allow an access to a node in a closed shadow tree, via any APIs, from outside", AFAIK. Like that we can not access a node in the internal hidden shadow tree which is used in <video> element, in Blink.

In fact, I designed a closed shadow tree in such a way. If there is a way to access a node in a closed shadow tree, it should be considered as a bug of the spec.

I think it's totally okay to have an API to allow an access in the layer of Chrome apps or extensions. However, for a normal web app, I think the current agreement is "Never allow it".

If we allowed it, that means we do not need a closed shadow tree. Just having an open shadow tree is enough, I think.

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WebDriver 视角

最近，@AutomatedTester [Mozilla Corporation 首席培根官 David Burns] 发起了关于 WebDriver - Testability of web components 的讨论

• Requests
• Proposals
• Issue Tracker

目前，Selenium 团队已开放接受拉取请求。

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片尾

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