private void SetOutputProperty(AnnotationCollection inputAnnotation)
{
var avail = inputAnnotation.Get <IAvailableValuesAnnotation>();
var setVal = avail as IAvailableValuesSelectedAnnotation;
var options = avail.AvailableValues.Cast <object>().ToArray();
setVal.SelectedValue = options[1];
}
/// <summary>
/// If the member has a PictureAttribute and it support being a string value, then it can probably be loaded as an image.
/// </summary>
/// <param name="annotation"></param>
/// <returns></returns>
public FrameworkElement CreateControl(AnnotationCollection annotation)
{
// [Picture] is used.
bool ispic = annotation.Get <IMemberAnnotation>()?.Member.HasAttribute <PictureAttribute>() ?? false;
if (ispic == false)
{
return(null);
}
// It is something that acts like a string.
var stringValueProvider = annotation.Get <IStringValueAnnotation>();
if (stringValueProvider == null)
{
return(null);
}
// create a WPF image control.
var img = new Image();
BindingOperations.SetBinding(img, Image.SourceProperty,
new Binding(nameof(IStringValueAnnotation.Value))
{
Source = stringValueProvider,
Converter = new FileToImageConverter() // this converter converts a file path (local or web) to an image source.
});
// ** Performance Notice **
// This way of showing an image is quite slow. If it is a large image from a slow network drive it could cause the GUI to lag whenever the step is selected.
// consider adding in memory caching of that is the case. For brevity this is not shown here.
//
// Get updates when changes happen to the annotation. For example when the value has changed.
var update = annotation.Get <UpdateMonitor>(true);
if (update != null)
{
// When the value changes explicitly reload the SourceProperty of the image.
update.RegisterSourceUpdated(img, () => img.GetBindingExpression(Image.SourceProperty).UpdateTarget());
}
return(img);
}
public void Annotate(AnnotationCollection annotations)
{
var member = annotations.Get <IMemberAnnotation>()?.Member;
if (member == null)
{
return;
}
if (member.TypeDescriptor == TypeData.FromType(typeof(IPAddress)) == false)
{
return;
}
// now its known that it is an IPAddress
annotations.Add(new IPAnnotation(annotations));
}
