Event Listeners - Selenium WebDriver

Event Listeners:

Used when I want on Execution of a particular action/event a code should be executed. For E.g. , Say on Click of a click a piece of code should be executed.

This is included in Interface WebDriverEventListener which has the method bodies which can be used for such purpose. The class which implements this is AbstractWebDriverEventListener

Let us see the implementation of Listeners:

Step 1: Create a Class containing the methods to be used , say weblisteners where we can define the methods. Code is as below:

import org.openqa.selenium.WebDriver;

import org.openqa.selenium.WebElement;

import org.openqa.selenium.support.events.AbstractWebDriverEventListener;

public class weblisteners extends AbstractWebDriverEventListener {

      

       public void afterClickOn(WebElement element, WebDriver driver){

              System.out.println("Object Has been Clicked");

       }

}

Step 2: Using the Objects in our main code:

public static void eventListenersExample(){

              WebDriver webdriver = new FirefoxDriver(); // Create a firefox driver

              EventFiringWebDriver driver = new EventFiringWebDriver(webdriver); // Create a EventFiring driver

              weblisteners listener = new weblisteners(); // Creating object of weblisteners clas as created above

             

              driver.register(listener); // Registering the listener

              driver.navigate().to("http://www.google.com.au");

              driver.findElement(By.xpath("//*[@id='gb_70']")).click(); // Only here the EventListeners will be triggered

               

             

         }

Now, when you execute the eventListenersExample code, on each click, the weblisteners class will be invoked and an appropriate action will be taken.

Extending the example:

Let us suppose we want to run a specific code when a user navigates back, then we need to update define the method appropriately in weblisteners class and that’s it.

public class weblisteners extends AbstractWebDriverEventListener {

      

       public void afterClickOn(WebElement element, WebDriver driver){

              System.out.println("Object Has been Clicked");

       }

Public void afterNavigateBack(WebDriver driver){

              System.out.println("User has moved back");

       }

}

The main code is as below:

public static void eventListenersExample(){

              WebDriver webdriver = new FirefoxDriver(); // Create a firefox driver

              EventFiringWebDriver driver = new EventFiringWebDriver(webdriver); // Create a EventFiring driver

              weblisteners listener = new weblisteners(); // Creating object of weblisteners clas as created above

             

              driver.register(listener); // Registering the listener

              driver.navigate().to("http://www.google.com.au");

              driver.findElement(By.xpath("//*[@id='gb_70']")).click(); // Only here the EventListeners will be triggered

               driver.navigate().back(); // here the afterNavigateBack method will be invoked.

             

         }