如何使用 SeleniumBasic (VBA) 与 chrome://downloads/ 中的 Shadow-Root DOM 元素交互

How use SeleniumBasic (VBA) to interact with Shadow-Root DOM element in the chrome://downloads/

我正在尝试与 Chrome 下载页面 (chrome://downloads/) 中的元素进行交互,以便能够了解下载何时完成。

但是我无法与此页面中的元素进行交互。我发现这是因为 shadow-root DOM 元素。

我在 google 中找到了一些如何使用 java 或 C 与这些元素交互的示例,但从未使用 VBA。你能帮忙把这些命令翻译成 VBA 吗?

https://medium.com/rate-engineering/a-guide-to-working-with-shadow-dom-using-selenium-b124992559f

https://medium.com/@alan.canlin/how-to-find-web-elements-in-shadow-doms-using-selenium-webdriver-and-c-36978f7de9ba

Google 代码页:

这是确保脚本等待下载完成的简单方法。

Function getDownLoadedFileName(maxTimeInMins As int)
    Dim startTime As Date
    startTime = Now()
    Dim downloadPercentage As int
    Do While ElapsedTime(Now(),startTime) < maxTimeInMins 
         downloadPercentage = driver.execute_script( "return document.querySelector('downloads-manager').shadowRoot.querySelector('#downloadsList downloads-item').shadowRoot.querySelector('#progress').value")
        If (downloadPercentage = 100) Then
            getDownLoadedFileName = driver.execute_script("return document.querySelector('downloads-manager').shadowRoot.querySelector('#downloadsList downloads-item').shadowRoot.querySelector('div#content  #file-link').text")
        End If
    Loop
End Function

Function ElapsedTime(endTime As Date, startTime As Date) 
    Dim Interval As Date 
    ' Calculate the time interval. 
    Interval = endTime - startTime 

    ' Format and return the time interval in seconds. 
    ElapsedTime = Int(CSng(Interval * 24 * 3600))
End Function

非常感谢!完美运行。

我只是在这里发帖,需要做一些小的修改:

Option Explicit

子Accessing_ShadowRoot_Object()

'================================='
'Declaração Early-Binding:
'================================='
Dim Selenium As New ChromeDriver  '
'================================='

Selenium.Start "chrome", "chrome://downloads"
Selenium.get "/"

Dim Nome_Download As String
Nome_Download = getDownLoadedFileName(Selenium, 10)

Debug.Print Nome_Download

结束子

Public 函数 getDownLoadedFileName(Driver As WebDriver, maxTimeInMins As Integer)

Dim startTime As Date
startTime = Now()
Dim downloadPercentage
Do While ElapsedTime(Now(), startTime) < maxTimeInMins
    downloadPercentage = Driver.ExecuteScript("return document.querySelector('downloads-manager').shadowRoot.querySelector('#frb0').shadowRoot.querySelector('#progress').value")
    Debug.Print downloadPercentage
    If (downloadPercentage = 100) Then
        getDownLoadedFileName = Driver.ExecuteScript("return document.querySelector('downloads-manager').shadowRoot.querySelector('#downloadsList downloads-item').shadowRoot.querySelector('div#content  #file-link').text")
    End If
    DoEvents
Loop

结束函数

函数 ElapsedTime(结束时间为日期,开始时间为日期)

Dim Interval As Date
' Calculate the time interval.
Interval = endTime - startTime

' Format and return the time interval in seconds.
ElapsedTime = Int(CSng(Interval * 24 * 3600))

结束函数