How to use xPath in Selenium WebDriver to grab SVG elements?

Question

I am testing an API, based on OpenLayers, with Selenium WebDriver (Java version).

I want to test a functionality that uses OpenLayers.Control.ModifyFeature. I want to click on drawn features (SVG), drag then and check if they are present, visible or hidden.

I have drawn a polygon, and I have selected it. See the image below:

The HTML of these SVG elements is here:

<svg id="OpenLayers_Layer_Vector_161_svgRoot" width="1235" height="495" viewBox="0 0 1235 495" style="display: block;">
    <g id="OpenLayers_Layer_Vector_161_root" transform="" style="visibility: visible;">
        <g id="OpenLayers_Layer_Vector_161_vroot">
            <path id="OpenLayers_Geometry_Polygon_200" d=" M 393.0000000000964,213.9999999999891 486.0000000003338,275.9999999997126 384.00000000036925,284.9999999994434 393.0000000000964,213.9999999999891 z" fill-rule="evenodd" fill="blue" fill-opacity="0.4" stroke="blue" stroke-opacity="1" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="pointer" />
            <circle id="OpenLayers_Geometry_Point_619" cx="439.50000000021464" cy="244.99999999985084" r="6" fill="#009900" fill-opacity="0.5" stroke="#ee9900" stroke-opacity="1" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="inherit" />
            <circle id="OpenLayers_Geometry_Point_621" cx="435.00000000035106" cy="280.49999999958163" r="6" fill="#009900" fill-opacity="0.5" stroke="#ee9900" stroke-opacity="1" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="inherit" />
            <circle id="OpenLayers_Geometry_Point_623" cx="388.50000000023283" cy="249.4999999997126" r="6" fill="#009900" fill-opacity="0.5" stroke="#ee9900" stroke-opacity="1" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="inherit" />
            <circle id="OpenLayers_Geometry_Point_202" cx="393.0000000000964" cy="213.9999999999891" r="6" fill="#990000" fill-opacity="1" stroke="#ee9900" stroke-opacity="1" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="inherit" />
            <circle id="OpenLayers_Geometry_Point_203" cx="486.0000000003338" cy="275.9999999997126" r="6" fill="#990000" fill-opacity="1" stroke="#ee9900" stroke-opacity="1" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="inherit" />
            <circle id="OpenLayers_Geometry_Point_204" cx="384.00000000036925" cy="284.9999999994434" r="6" fill="#990000" fill-opacity="1" stroke="#ee9900" stroke-opacity="1" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted" cursor="inherit" />
        </g>
        <g id="OpenLayers_Layer_Vector_161_troot" />
    </g>
</svg>

Suppose I want to select the red points.

I tried:

String xpath = "//circle[contains(@id, 'OpenLayers_Geometry_Point') AND fill = '#990000']";
List<WebElement> vertices = driver.findElements(By.xpath(xpath));

But it always returns an empty list [].

What am I doing wrong here? Could anybody help me, please?

Thanks a lot.

EDIT 1 - Function: verticesAreVisible

Before the clicking actions, I want to get the elements and check if they are visible. I am using this function.

public static boolean verticesAreVisible(WebDriver driver, String xpath) {
    List<WebElement> list = driver.findElements(By.xpath(xpath));
    if (list.isEmpty()) {
        return false;
    }
    boolean visible = true;
    for (int i = 0; i < list.size(); i++) {
        visible = visible && list.get(i).isDisplayed();
    }
    return !verticesAreNotVisible(driver) && visible;
}

EDIT 2 - Correct xPath

// This solution from Razib is valid if the SVG is on the root node
String xpath = "/*[name()='svg']/*[name()='circle']";
// I changed it so that any descendant is valid "//"
String xpath = "//*[name()='svg']//*[name()='circle']";
// Since I wanted only the red vertices, I added this
String xpath = "//*[name()='svg']//*[name()='circle' and @fill='#990000']";

Solution 1

May be you need to use the Actions with name attribute in Xpath. In your XPath use it -

"/*[name()='svg']/*[name()='SVG OBJECT']"  

Then try the following code snippet -

WebElement svgObj = driver.findElement(By.xpath(XPATH));
Actions actionBuilder = new Actions(driver);
actionBuilder.click(svgObj).build().perform();

Solution 2

To locate the red points i.e. the elements with attribute fill="#990000" and id attribute containing OpenLayers_Geometry_Point you can use either of the following Locator Strategies:

• Using xpath:

  //*[name()='svg']/*[name()='g']/*[name()='g']//*[name()='circle' and contains(@fill, '990000')][starts-with(@id, 'OpenLayers_Geometry_Point')]
  

• Using css-selectors:

  svg > g > g circle[fill$='990000'][id^='OpenLayers_Geometry_Point']
  

Ideally, you need to induce WebDriverWait for the visibilityOfAllElementsLocatedBy() and you can use either of the following Locator Strategies:

• Using cssSelector:

  List<WebElement> vertices = new WebDriverWait(driver, 20).until(ExpectedConditions.visibilityOfAllElementsLocatedBy(By.cssSelector("svg > g > g circle[fill$='990000'][id^='OpenLayers_Geometry_Point']")));
  

• Using xpath:

  List<WebElement> vertices = new WebDriverWait(driver, 20).until(ExpectedConditions.visibilityOfAllElementsLocatedBy(By.xpath("//*[name()='svg']/*[name()='g']/*[name()='g']//*[name()='circle' and contains(@fill, '990000')][starts-with(@id, 'OpenLayers_Geometry_Point')]")));
  

---

References

You can find a couple of relevant details discussions in:

• How to click on SVG elements using XPath and Selenium WebDriver through Java
• Clicking on svg using selenium python
• Unable to locate SVG elements through xpath on Kendo UI chart
• Creating XPATH for svg tag
• How to access to 'rect' type element through Selenium-Python

Solution 3

Try @fill instead of fill and OpenLayers_Geometry_Point instead of OpenLayers.Geometry.Point.

Comments

[Huibin Zhang]

Hi I find this xpath is more easy to use, actions is not needed. //*[local-name()='svg']//*[local- name()='g' and and @fill='#990000'']

[joaorodr84]

Hi @peetya. Thanks for the 'OpenLayers_Geometry_Point' tip. I completely forgot to replace dots with underscores. Anyway, the '@fill' tip did not work. If I use this xPath '//*[contains(@id, 'OpenLayers_Geometry_Point')]', I get the 6 points. But I only want the 3 red.

[joaorodr84]

Hi @Razib. I struggled some time to get this working, but thanks to your tip, it works now! :) Thank you very much!!! See the edits on my post for more details on the solution.