public static bool WaitForPageToLoad()

in Microsoft.Dynamics365.UIAutomation.Browser/Extensions/SeleniumExtensions.cs [283:336]
49 lines of code
11 McCabe index (conditional complexity)

        public static bool WaitForPageToLoad(this IWebDriver driver, TimeSpan? timeout = null)
        {
            string state = string.Empty;
            try
            {
                WebDriverWait wait = new WebDriverWait(driver, timeout ?? Constants.DefaultTimeout);

                //Checks every 500 ms whether predicate returns true if returns exit otherwise keep trying till it returns ture
                wait.Until(d =>
                {
                    try
                    {
                        state = ((IJavaScriptExecutor) driver).ExecuteScript(@"return document.readyState").ToString();
                    }
                    catch (InvalidOperationException)
                    {
                        //Ignore
                    }
                    catch (NoSuchWindowException)
                    {
                        //when popup is closed, switch to last windows
                        driver.LastWindow();
                    }

                    //In IE7 there are chances we may get state as loaded instead of complete
                    return (state.Equals("complete", StringComparison.InvariantCultureIgnoreCase));
                });
            }
            catch (TimeoutException)
            {
                //sometimes Page remains in Interactive mode and never becomes Complete, then we can still try to access the controls
                if (!state.Equals("interactive", StringComparison.InvariantCultureIgnoreCase))
                    throw;
            }
            catch (NullReferenceException)
            {
                //sometimes Page remains in Interactive mode and never becomes Complete, then we can still try to access the controls
                if (!state.Equals("interactive", StringComparison.InvariantCultureIgnoreCase))
                    throw;
            }
            catch (WebDriverException)
            {
                if (driver.WindowHandles.Count == 1)
                {
                    driver.SwitchTo().Window(driver.WindowHandles[0]);
                }

                state = ((IJavaScriptExecutor) driver).ExecuteScript(@"return document.readyState").ToString();
                if (!(state.Equals("complete", StringComparison.InvariantCultureIgnoreCase) || state.Equals("loaded", StringComparison.InvariantCultureIgnoreCase)))
                    throw;
            }

            return true;
        }