/// <summary>
/// We remove the property with the info passed in from the transition.
/// </summary>
internal void RemoveProperty(TransitionedPropertyInfo info)
{
lock (_lock)
{
TransitionedProperties.Remove(info);
}
}
/// <summary>
/// Adds a property that should be animated as part of this transition.
/// </summary>
public Transition Add(object target, string propertyName, object destinationValue)
{
// We get the property info...
var targetType = target.GetType();
var propertyInfo = targetType.GetProperty(propertyName);
if (propertyInfo == null)
{
throw new InvalidOperationException($"Object: {target} does not have the property: {propertyName}");
}
// We check that we support the property type...
var propertyType = propertyInfo.PropertyType;
if (!_mapManagedTypes.ContainsKey(propertyType))
{
throw new InvalidOperationException($"Transition does not handle properties of type: {propertyType}");
}
// We can only transition properties that are both getable and setable...
if (!propertyInfo.CanRead || !propertyInfo.CanWrite)
{
throw new InvalidOperationException($"Property is not both getable and setable: {propertyName}");
}
var managedType = _mapManagedTypes[propertyType];
// We can manage this type, so we store the information for the
// transition of this property...
var info = new TransitionedPropertyInfo
{
EndValue = destinationValue,
Target = target,
PropertyInfo = propertyInfo,
ManagedType = managedType
};
lock (_lock)
{
TransitionedProperties.Add(info);
}
return(this);
}