Mouse hover and other mouse events in WebDriver
This is widely known issue among web driver community, how to perform mouse hover. I have many scenarios in my test where I needed to perform mouse hover to see calendar, email schedule etc. After many attempts, I found solution which is actually working very well for me but I am not sure if it’s going to work with your application of not. Before going into coding we need to consider few limitations,
- In Firefox, you have to maximize the webpage just before doing mouseover to get the focus on browser.
- Works fine even in normal window size with other browser like IE and Chrome.
For mouse event, you can call Action builder or even java script can do as well. I will not go in more theoretical detail but directly into coding. I am giving the same code I am using in my scripts, so please feel free to change or modify as per your need.
Using Action Builder:
public static bool ElementMouseOver(IWebElement targetElement)
{
Size currentWinSize = _driver.Manage().Window.Size;
_driver.Manage().Window.Maximize();
OpenQA.Selenium.Interactions.Actions builder = new OpenQA.Selenium.Interactions.Actions(_driver);
try
{
builder.MoveToElement(targetElement).Build().Perform();
Thread.Sleep(2000);//2 sec is just to for this blog.
//I use custome method to wait element being appeared after mouse hover event.
//You can use other variable wait time but make sure your give some pause
//otherwise mouse hover will happen for fraction of seconds and then disappear.
_driver.Manage().Window.Size = currentWinSize;
}
catch (Exception e)
{
loggerInfo.Instance.Message(e.Message);
return false;
}
return true;
}
Using JavaScript
public static void MouseHoverByJavaScript(IWebElement targetElement)
{
string javaScript = "var evObj = document.createEvent('MouseEvents');" +
"evObj.initMouseEvent(\"mouseover\",true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);" +
"arguments[0].dispatchEvent(evObj);";
IJavaScriptExecutor js = _driver as IJavaScriptExecutor;
js.ExecuteScript(javaScript, targetElement);
}
You can use above java script to perform other mouse events like click/double click. Please refer initMouseEvent which you can use in above code.
I implemented drag and Drop event as well using Action builder itself.
Drag And Drop
IWebElement source = FindElement("blah blah");
IWebElement target = FindElement("blah blah");
OpenQA.Selenium.Interactions.Actions builder = new OpenQA.Selenium.Interactions.Actions(_driver);
try
{
builder.DragAndDrop(source, target).Build().Perform();
}
catch (Exception e)
{
//log Exception.I use NLog.
}
Everyone uses own approach to handle such events. I mostly use Firefox/Chrome for testing as IE some time very flaky. And personally I hate IE. I tested above code in FF/Chrome and it was working fine. I would like to learn new way to handle such events If you are aware of any and please don’t forget to post in comment below or email me via contact us page.
samwoo111
October 4, 2012I ran into a case where when I drag and drop I have to put a short sleep after moving the mouse and releasing the mouse button. To fix the issue I changed my DragAndDrop function to do this:
Actions builder = new Actions(WTWebUiAuto.webDriver);
builder.ClickAndHold(source);
builder.MoveToElement(target, xOffset, yOffset);
builder.Perform();
Thread.Sleep(delayBeforeDropping);
Actions builder2 = new Actions(WTWebUiAuto.webDriver);
builder2.Release();
builder2.Perform();
samwoo111
October 4, 2012And thanks, your mouseover methods helped fix an issue I was seeing sometimes in firefox.
admin
October 5, 2012Thanks samwoo111 for your comments. I am very glad that above code helped you!.
Deepak
January 22, 2015GREAT lines of code.
Solved my problem
Thanks a lot
public static void MouseHoverByJavaScript(IWebElement targetElement)
{
string javaScript = “var evObj = document.createEvent(‘MouseEvents’);” +
“evObj.initMouseEvent(\”mouseover\”,true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);” +
“arguments[0].dispatchEvent(evObj);”;
IJavaScriptExecutor js = _driver as IJavaScriptExecutor;
js.ExecuteScript(javaScript, targetElement);
}
surekha
July 8, 2015i need mouse hover code for python not java and also for Interent explorer browser .Please provide solution .It may great help for us.
Aditya
July 9, 2015Hi Surekha,
Try this
from selenium.webdriver.common.action_chains import ActionChains
def hover(self):
wd = webdriver_connection.connection
element = wd.find_element_by_link_text(self.locator)
hov = ActionChains(wd).move_to_element(element)
hov.perform()
if this doesn’t work, please post your question in http://learnseleniumtesting.com/forum/
Sreekanth
September 2, 2015Hi,
I am running the selenium scripts on Safari browser but its doesnt support interaction API. can you please send me the workaround javascript code for the below code please.
Actions action = new Actions(driver);
action.moveToElement(element);
action.clickAndHold();
action.moveByOffset(100,200).moveByOffset(-10, -20).moveByOffset(-10, -10).moveByOffset(-10, -20).build().perform();
action.release().build().perform();
Sonali
September 25, 2015Hey Aditya,
Your code has really helped me.
Thanks a lot
Aditya
September 25, 2015Thanks Sonali,
Glad that code was helpful.
Mohit
March 3, 2016The below mouse action code has worked for me while selecting a value from a drop-down :
Actions act = new Actions(driver);
act.moveToElement(driver.findElement(By.xpath(“”))).perform();
act.moveByOffset(10, 0);(driver.findElement(By.xpath(“element path”))).click();
Raveendra
April 7, 2016How i need to copy the text of the field once Hover on element.?
Aditya
April 7, 2016Raveendra,
Once you hover the mouse over the element, you just need to read that items in the same way you read other element. I think you are talking about some special case. Please share the issue with example.