public static bool IsMeetsRequirements(Condition condition, AutomationElement element)
{
var type = condition.GetType();
if (condition == Condition.TrueCondition)
// Always return true.
return true;
if (condition == Condition.FalseCondition)
// Always returns false.
return false;
if (type == typeof(NotCondition))
// Return the negation of the inner condition.
return !IsMeetsRequirements(((NotCondition) condition).Condition, element);
if (type == typeof(OrCondition))
// Return true if any of the inner conditions are true.
return ((OrCondition) condition).GetConditions().Any(inner => IsMeetsRequirements(inner, element));
if (type == typeof(AndCondition))
// Return true if all of the inner conditions are true.
return ((AndCondition) condition).GetConditions().All(inner => IsMeetsRequirements(inner, element));
if (type == typeof(StringPropertyCondition))
// Return true if the string property condition matches.
return ((StringPropertyCondition) condition).IsMatch(element);
if (type == typeof(PropertyCondition)) {
// Return true if the property condition matches.
var propertyCondition = (PropertyCondition) condition;
var actual = element.GetCurrentPropertyValue(propertyCondition.Property);
var expected = propertyCondition.Value;
Trace.WriteLine("Checking '" + AutomationPropertyHelper.ToString(actual) + "'='" + AutomationPropertyHelper.ToString(expected) + "'", "UIAutomation-ConditionHelper");
return AutomationPropertyHelper.Equals(actual, expected);
}
// Don't know how to match any other conditions.
throw new NotSupportedException("Condition '" + type + "' is not supported");
}
