/// <summary>
/// This function returns the link type state from the name in argument
/// </summary>
/// <param name="link">name of the type you need</param>
/// <returns>the type of link you asked for</returns>
private model.LinkType GetLinkType(Link link)
{
if (!this.linkTypeList.ContainsKey(link.TypeName))
{
this.linkTypeList.Add(link.TypeName, new LinkType(link.Verb, link.RelatedNode1.TypeName, link.RelatedNode2.TypeName));
if (this.LinkTypesChanged != null)
{
this.LinkTypesChanged(this, new EventArgs());
}
}
return this.linkTypeList[link.TypeName];
}
/// <summary>
/// Creates and returns a link but doesn't add it to the current model
/// </summary>
/// <remarks>
/// If a link with same ID already exist, modifies existing link with the given values and returns it
/// You must add the link to the model after creation.
/// </remarks>
/// <param name="id">ID of the link</param>
/// <param name="nodeFrom">ID of the first node relative to the link</param>
/// <param name="nodeTo">ID of the second node relative to the link</param>
/// <param name="actions">List of all action that could be performed on the link (XML)</param>
/// <param name="drawingInformation">An Xml representation of all information needed to draw a link on the graph</param>
/// <param name="strength">Strength between the two nodes</param>
/// <param name="style">Style of the link</param>
/// <param name="verb">Verb used in the link description</param>
/// <param name="complement">Complement used in the link description</param>
/// <returns>Created link</returns>
public Link CreateLink(
string id,
string nodeFrom,
string nodeTo,
List<string> actions,
string drawingInformation,
float strength,
string style,
string verb,
string complement)
{
bool linkExist = false;
Link link = null;
// make sure this link is unique
foreach (Link otherLink in new List<Link>(this.linkList))
{
if (otherLink.ID.Equals(id))
{
// if the link already exist
linkExist = true;
link = otherLink;
}
}
if (!linkExist)
{
// get related nodes
Node node1 = null;
Node node2 = null;
foreach (Node node in new List<Node>(this.nodeList))
{
if (node.ID.Equals(nodeFrom))
{
node1 = node;
}
if (node.ID.Equals(nodeTo))
{
node2 = node;
}
}
if (node1 == null)
{
throw new ArgumentException("the link \"" + id + "\" cannot be create. (the value of property \"From\" isn't a valid node ID)");
}
if (node2 == null)
{
throw new ArgumentException("the link \"" + id + "\" cannot be create. (the value of property \"To\" isn't a valid node ID)");
}
// creating the link
link = new Link(id, node1, node2);
// we add it to the model
this.linkList.Add(link);
}
link.Actions = actions;
link.DrawingInformation = drawingInformation;
link.Strength = strength;
link.StyleName = style;
link.Verb = verb;
this.GetLinkType(link);
link.Complement = complement;
return link;
}