/// <summary>
/// Returns a new IEdgeViewModel that is a copy of the current
/// edge view model but with the specified source and target
/// nodes
/// </summary>
/// <param name="source">The source Node for this edge</param>
/// <param name="target">The target Node for this edge</param>
/// <returns>an edge view model</returns>
public virtual IEdgeViewModel Copy(INode source, INode target)
{
// Create a copy of the parent edgeLine
IEdge newEdge = this.ParentEdge.Copy(source, target);
// Create a new edge view model based on the the type
// of the new edge that was just created
//EdgeViewModelBase oldEdgeVM = GetEdgeViewModel(newEdge);
IEdgeViewModel newEdgeVM = null;
//TODO: TRY AND UPDATE TO USE GENERICS
if (this is SimilarityEdgeViewModel)
{
newEdgeVM = new SimilarityEdgeViewModel(newEdge as SimilarityDataEdge, this.Scope)
{
Visibility = this.Visibility,
EdgeLine = new EdgeLine(ParentEdge.Type)
{
Opacity = this.EdgeLine.Opacity,
Color = this.EdgeLine.Color,
Thickness = this.EdgeLine.Thickness,
LabelForegroundColor = this.EdgeLine.LabelForegroundColor,
LabelBackgroundColor = this.EdgeLine.LabelBackgroundColor,
LabelFontStyle = this.EdgeLine.LabelFontStyle,
LabelFontWeight = this.EdgeLine.LabelFontWeight,
LabelTextUnderline = this.EdgeLine.LabelTextUnderline,
LabelFont = this.EdgeLine.LabelFont
}
};
}
else
{
newEdgeVM = new StandardEdgeViewModel(newEdge, this.Scope)
{
Visibility = this.Visibility,
EdgeLine = new EdgeLine(ParentEdge.Type)
{
Opacity = this.EdgeLine.Opacity,
Color = this.EdgeLine.Color,
Thickness = this.EdgeLine.Thickness,
LabelForegroundColor = this.EdgeLine.LabelForegroundColor,
LabelBackgroundColor = this.EdgeLine.LabelBackgroundColor,
LabelFontStyle = this.EdgeLine.LabelFontStyle,
LabelFontWeight = this.EdgeLine.LabelFontWeight,
LabelTextUnderline = this.EdgeLine.LabelTextUnderline,
LabelFont = this.EdgeLine.LabelFont
}
};
}
return(newEdgeVM);
}
/// <summary>
/// Creates a new SimilarityEdgeViewModel or retrieves
/// an existing one from the cache
/// </summary>
/// <param name="sourceNode">The source node</param>
/// <param name="targetNode">The target node</param>
/// <param name="similarityValue">The similarity value for the provided source and target node</param>
/// <returns>a new (or cached) SimilarityEdgeViewModel</returns>
private void GenerateSimilarityEdgeVM(SimilarityDataEdge similarityEdge)
{
List <SimilarityEdgeViewModel> nodeSimilarityEdges;
SimilarityEdgeViewModel newEdgeVM = null;
//TODO: WE NEED TO CLEAR THE CACHE AT SOME POINT IN TIME
// Get the cache list of edges for the source node
if (attributeEdgeCache.TryGetValue(similarityEdge.Source, out nodeSimilarityEdges))
{
// Loop over all the edges to try and find if we already have one
// for the given source and target nodes
foreach (SimilarityEdgeViewModel currentEdgeVM in nodeSimilarityEdges)
{
if (currentEdgeVM.ParentEdge.Target == similarityEdge.Target)
{
// The edge was previously cached
newEdgeVM = currentEdgeVM;
break;
}
}
}
else
{
// Initialize the edge cache list
attributeEdgeCache[similarityEdge.Target] = new List <SimilarityEdgeViewModel>();
}
// If we found an edge, we should return it
if (newEdgeVM != null)
{
GraphManager.Instance.DefaultGraphComponentsInstance.AddEdgeViewModel(newEdgeVM);
}
// If we are here, we need to create a brand new edge
newEdgeVM = new SimilarityEdgeViewModel(similarityEdge, this.scope);
GraphManager.Instance.DefaultGraphComponentsInstance.AddEdgeViewModel(newEdgeVM);
}
