/// <summary>
/// Tries to get the @Name condition from the given XPath expression.
/// </summary>
/// <param name="xpath"></param>
/// <returns></returns>
public static string GetControlNameFromXPath(string xpath)
{
if (xpath.StartsWith("uia:"))
{
xpath = xpath.Substring(4);
}
else
{
return(null);
}
XPathExpression expr = XPath.Parse(xpath, true);
XPathPredicate pred = expr as XPathPredicate;
if (pred != null)
{
// Try to identify when the XPath actually refers to a combo box
XPathStep step = pred.Left as XPathStep;
if (step != null && step.LocalPart == "edit")
{
XPathPredicate tempPred = step.Left as XPathPredicate;
if (tempPred != null)
{
XPathStep tempStep = tempPred.Left as XPathStep;
if (tempStep != null && tempStep.LocalPart == "combobox")
{
pred = tempPred;
}
}
}
XPathOperatorExpression op = pred.Filter as XPathOperatorExpression;
if (op != null)
{
return(FindEqualsCondition(op, "Name") ?? FindEqualsCondition(op, "ID"));
}
}
return(null);
}
public static string FindEqualsCondition(XPathOperatorExpression op, string attributeName)
{
if (op.Operator == "=")
{
XPathStep step = (op.Left as XPathStep) ?? (op.Right as XPathStep);
XPathLiteral lit = (op.Left as XPathLiteral) ?? (op.Right as XPathLiteral);
if (step != null && step.Axis == "attribute" && step.Left == null && step.LocalPart == attributeName &&
lit != null && lit.Value is string)
{
return((string)lit.Value);
}
}
if (op.Operator == "and")
{
XPathOperatorExpression left = op.Left as XPathOperatorExpression;
XPathOperatorExpression right = op.Right as XPathOperatorExpression;
if (left != null)
{
string result = FindEqualsCondition(left, attributeName);
if (result != null)
{
return(result);
}
}
if (right != null)
{
return(FindEqualsCondition(right, attributeName));
}
}
return(null);
}
