/* public override Object Perform(Object obj)
* {
* return null;
* }
*/
public override Object Perform(Object obj)
{
Document source = ResolveSourceDocument();
Image image = (Image)GetArgumentObject(SemanticOperationNamedArguments.Metadata);
if (image == null)
{
ParsedUri imagePURL = (ParsedUri)GetArgumentObject(SemanticOperationNamedArguments.ImagePurl);
/* if (imagePURL != null)
* {
* image = sessionScope.GetOrConstructImage(imagePURL);
*
* //TODO -- if it already exists: (1) do we need to download??
* // (2) should we merge metadata
* }
*/
}
else
{
//TODO add to global collections?! if already there merge!
}
if (image != null && image.Location != null)
{
image.SemanticsSessionScope = sessionScope as SemanticsSessionScope;
Document mixin = (Document)GetArgumentObject(SemanticOperationNamedArguments.Mixin);
if (mixin != null)
{
image.AddMixin(mixin);
}
Object captionObject = GetArgumentObject(SemanticOperationNamedArguments.Caption);
String caption = (captionObject != null) ? captionObject.ToString() : null;
int width = GetArgumentInteger(SemanticOperationNamedArguments.Width, 0);
int height = GetArgumentInteger(SemanticOperationNamedArguments.Height, 0);
ParsedUri hrefPURL = (ParsedUri)GetArgumentObject(SemanticOperationNamedArguments.Href);
Document outlink = (Document)GetArgumentObject(SemanticOperationNamedArguments.HrefMetadata);
//if (hrefPURL != null & outlink == null)
// outlink = sessionScope.GetOrConstructDocument(hrefPURL);
ImageClipping imageClipping = image.ConstructClipping(source, outlink, caption, null);
source.AddClipping(imageClipping);
DocumentClosure imageClosure;
if (this.sessionScope is SemanticsSessionScope)
{
imageClosure = image.GetOrConstructClosure();
if (documentParser != null)
{
}
else
{
//imageClosure.RequestMetadata();
}
}
else
{
image.GetOrConstructClosure();
}
return(image);
}
else
{
MetaMetadata mm = GetMetaMetadata();
String mmString = mm != null ? mm.Name : "Couldn't getMetaMetadata()";
Debug.WriteLine("Can't createAndVisualizeImgSurrogate because null PURL: " + mmString
+ " - " + source.Location);
}
return(null);
}
void OnEnable()
{
_clipping = target as ImageClipping;
}