public bool TryGetPropertyValue <T>(PropertyId property, out T value)
{
if (Equals(property, PropertyId.NotSupportedByFramework))
{
throw new NotSupportedByFrameworkException();
}
var isCacheActive = CacheRequest.IsCachingActive;
try
{
var internalValue = this.InternalGetPropertyValue(property.Id, isCacheActive, useDefaultIfNotSupported: false);
if (internalValue == this.Automation.NotSupportedValue)
{
value = default(T);
return(false);
}
value = property.Convert <T>(this.Automation, internalValue);
return(true);
}
catch (Exception ex)
{
if (isCacheActive)
{
var cacheRequest = CacheRequest.Current;
if (!cacheRequest.Properties.Contains(property))
{
throw new PropertyNotCachedException(property, ex);
}
}
// Should actually never come here
throw;
}
}
public void Add(PropertyId property)
{
this.Properties.Add(property);
}
public PropertyNotSupportedException(string message, PropertyId property, Exception innerException)
: base(message, innerException)
{
this.Property = property;
}
public PropertyNotSupportedException(PropertyId property, Exception innerException)
: base(string.Format(DefaultMessageWithData, property.Name), innerException)
{
this.Property = property;
}
public PropertyNotSupportedException(string message, PropertyId property)
: base(message)
{
this.Property = property;
}
public PropertyNotCachedException(PropertyId property)
: base(string.Format(DefaultMessageWithData, property))
{
this.Property = property;
}
public static PatternId GetOrCreate(int id, string name, PropertyId availabilityProperty)
{
return(Cache.GetOrAdd(id, x => new PatternId(x, name, availabilityProperty)));
}
private PatternId(int id, string name, PropertyId availabilityProperty)
{
this.Id = id;
this.Name = name;
this.AvailabilityProperty = availabilityProperty;
}
/// <inheritdoc/>
public void HandlePropertyChangedEvent(AutomationElement sender, PropertyId propertyId, object newValue)
{
this.callAction(sender, propertyId, newValue);
}
/// <summary>
/// Gets the desired property value. Ends in an exception if the property is not supported or not cached.
/// </summary>
public object GetPropertyValue(PropertyId property)
{
return(this.GetPropertyValue <object>(property));
}
/// <summary>
/// Tries to get the property value.
/// Returns false and sets a default value if the property is not supported.
/// </summary>
public bool TryGetPropertyValue(PropertyId property, out object value)
{
return(this.TryGetPropertyValue <object>(property, out value));
}
protected AutomationProperty <T> GetOrCreate <T>(ref AutomationProperty <T> val, PropertyId propertyId)
{
return(val ?? (val = new AutomationProperty <T>(propertyId, this.BasicAutomationElement)));
}
/// <summary>
/// Method to check if the element supports the given property via UIA method.
/// Does not work with cached elements and might be unreliable.
/// </summary>
public bool IsPropertySupportedDirect(PropertyId property)
{
return(this.GetSupportedPropertiesDirect().Contains(property));
}
public PropertyCondition(PropertyId property, object value)
: this(property, value, PropertyConditionFlags.None)
{
}
public PropertyCondition(PropertyId property, object value, PropertyConditionFlags propertyConditionFlags)
{
this.Property = property;
this.Value = value;
this.PropertyConditionFlags = propertyConditionFlags;
}
public static bool TryGet(int id, out PropertyId result)
{
return(Cache.TryGetValue(id, out result));
}