/// <inheritdoc />
public IParameterVisualiser InstantiateVisualiser(Type type)
{
Type visualiserType = VisualiserType(type);
IParameterVisualiserInfo info = AttributeMapping[type];
if (info.IsGeneric)
{
return((IParameterVisualiser)Activator.CreateInstance(visualiserType.MakeGenericType(type)));
}
return((IParameterVisualiser)Activator.CreateInstance(visualiserType));
}
/// <summary>
/// Add a new <see cref="IParameterVisualiser"/> to the mapping. This requires the class itself and some additional information.
/// </summary>
/// <param name="visualiserClass">The class that represents the type (e.g. <see cref="SigmaCheckBox"/>).
/// For the default Sigma parameter handling, <see ref="visualiserClass"/> has to implement <see cref="IParameterVisualiser"/> and
/// requires a public parameterless constructor.</param>
/// <param name="parameterInfo">The info for the visualiser (type it represents ... ).</param>
/// <returns><c>True</c> if the type could be added successfully. <c>False</c> otherwise (e.g. an <see cref="IParameterVisualiser"/> with a higher
/// priority has already been added).</returns>
public virtual bool Add(Type visualiserClass, IParameterVisualiserInfo parameterInfo)
{
if (!typeof(IParameterVisualiser).IsAssignableFrom(visualiserClass))
{
_log.Warn($"{visualiserClass.Name} does not implement the interface {nameof(IParameterVisualiser)} - be aware that this can cause weird errors when using Sigmas default parameter display.");
}
if (visualiserClass.GetConstructor(Type.EmptyTypes) == null)
{
_log.Warn($"{visualiserClass.Name} does not have a public parameterless constructor - be aware that this can cause weird errors when using Sigmas default parameter display.");
}
if (!typeof(UIElement).IsAssignableFrom(visualiserClass))
{
_log.Warn($"{visualiserClass.Name} does not derive from {nameof(UIElement)} - be aware that this can cause weird errors when using Sigmas default parameter display.");
}
Type storedClass;
IParameterVisualiserInfo storedAttribte;
// if the mapping has already been added
if (TypeMapping.TryGetValue(parameterInfo.Type, out storedClass) && AttributeMapping.TryGetValue(parameterInfo.Type, out storedAttribte))
{
// if the a differnt type is being represented (necessarry for generics)
if (!ReferenceEquals(visualiserClass, storedClass))
{
// if the new values have a lower priority, we return false
if (parameterInfo.Priority <= storedAttribte.Priority)
{
_log.Warn($"{parameterInfo.Type} is currently visualised by {storedClass.Name}; {visualiserClass.Name} tried to be the visualiser but has a lower priority ({parameterInfo.Priority} <= {storedAttribte.Priority}).");
return(false);
}
_log.Debug($"{parameterInfo.Type} was visualised by {storedClass.Name}; {visualiserClass.Name} has a higher priority and is therefore the new visualiser ({parameterInfo.Priority} > {storedAttribte.Priority}).");
}
}
TypeMapping[parameterInfo.Type] = visualiserClass;
AttributeMapping[parameterInfo.Type] = parameterInfo;
return(true);
}
