private GeckoNode GetFirstChildWithClass(GeckoElement parentElement, string targetClass)
{
// Something here can be null when adding pages very quickly, possibly because something
// is incompletely constructed or in the course of being disposed? So be very careful.
if (parentElement == null || parentElement.ChildNodes == null)
return null;
var targetWithSpaces = " " + targetClass + " "; // search for this to avoid partial word matches
return parentElement.ChildNodes.FirstOrDefault(e =>
{
var ge = e as GeckoElement;
if (ge == null)
return false;
var attr = ge.Attributes["class"];
if (attr == null)
return false;
var content = " " + attr.TextContent + " "; // wrapping spaces allow us to find targetWithSpaces at start or end
if (content == null)
return false;
return content.Contains(targetWithSpaces);
});
}
