How to switch to a new window using Selenium?

Question

In my code i have reached to a page using selenium in whihc there is a link which opens as a popup on the same page, but that link is using , so it is like a new page which is o

Answer 1

After clicking the link you need to wait until Selenium realizes there are now totally 2 windows.

String parent = driver.getWindowHandle();
    driver.findElement(By.xpath("//a[@id='alertHistoryLink']")).click();
    // after clicking on the link
    // call the method numberOfWindowsToBe as follows
    WebDriverWait wait = new WebDriverWait(driver, 15, 100);
    wait.until(numberOfWindowsToBe(2));

public static ExpectedCondition numberOfWindowsToBe(final int numberOfWindows) {
    return new ExpectedCondition() {
      @Override
      public Boolean apply(WebDriver driver) {
                driver.getWindowHandles();
        return driver.getWindowHandles().size() == numberOfWindows;
      }
    };
}

All i want is to get the driver of the popup page only

EDIT: The driver for the master window is the driver for the popup as popup itself is the part of the master window. The only exception is, if the popup is present in a frame, then you need to switch to the frame then you can perform actions on the elements present in the popup.

EDIT: If I understand you correctly, you want to get the page source of the popup. As popup is part of the master window. What I would do is

popup.getAttribute("innerHTML"); Where popup is of type WebElement.

For example if HTML of the master window is like

 

.....


...
...
..
 
//html elements present in popup

...
..

then

WebElement popup = driver.findElement(By.xpath("//div[@id='popup']"));

String htmlInsidePopup = popup.getAttribute("innerHTML");
System.out.println(htmlInsidePopup);

will solve the problem.