/// <summary>
/// This method evaluates if one IWebElement contains a child selected by the predicate. It can be used to select
/// one container element based on its child elements.
/// </summary>
/// <param name="element">The container element to be evaludated.</param>
/// <param name="childEnum">Enum Identifier of the child element, which carries the CSS selector.</param>
/// <param name="predicate">Function to see if the child element meets predefined criteria.</param>
/// <returns>"true": The container IWebElement contains the expected child IWebElement, otherwise "false".</returns>
public static bool HasChildOf(this IWebElement element, Enum childEnum, Func <IWebElement, bool> predicate)
{
string childLocatorCss = childEnum.Css();
IWebElement child = null;
try
{
//child = GenericWait<IWebElement>.Until(() =>
// element.FindElementByCss(childLocatorCss), null, 1000);
ReadOnlyCollection <IWebElement> candidates = null;
candidates = GenericWait <ReadOnlyCollection <IWebElement> > .Until(
() => candidates = element.FindElementsByCss(childLocatorCss),
x => x.Count != 0,
200
);
var qualified = candidates.Where(predicate).ToList();
bool result = qualified.Count != 0;
return(result);
}
catch (Exception)
{
return(false);
}
}
/// <summary>
/// Assuming Elements can be found with CSS selector within time specified by waitInMills, keep executing the
/// FindElementsByCssSelector() of either Driver or a specific IWebElement until timeout.
/// </summary>
/// <param name="findFunc">The FindElementsByCssSelector() of either Driver or a specific IWebElement.</param>
/// <param name="css">CSS Selector string.</param>
/// <param name="waitInMills">Maximum time to wait when the findFunc returns 0-length collection.</param>
/// <returns>The non-empty collection immediately or empty collection after time is out.</returns>
public ReadOnlyCollection <IWebElement> WaitToFindElements(Func <string, ReadOnlyCollection <IWebElement> > findFunc,
string css,
int waitInMills)
{
return(GenericWait <ReadOnlyCollection <IWebElement> > .Until(
() => findFunc(css), collction => collction.Count != 0, waitInMills
));
}