how to handle split buttons in Selenium WebDriver

Split button dropdowns use the same general style as the dropdown button but add a primary action along with the dropdown.

Example:

Below is the code snippet.

String objs="//table[@id='PlanningModule_planWorkflow_workflowLockButton']//tr[2]/td[@class='x-btn-mc']/em[@class='x-btn-split']/button";

WebElement ele =driver.findElement(By.xpath(objs));

ele.click();

 ele.sendKeys(Keys.ARROW_DOWN);              

 driver.findElement(By.xpath("//div[@class=' x-menu-list']//a[@id='PlanningModule_planWorkflow_Lock _lock ' and contains(text(),'Full Lock')]")).click();