/// <summary>
/// Creates a new link between the startNode and the endNode.
/// The startPort and endPort are the ports for the start and end nodes.
/// </summary>
/// <param name="startNode">The starting node</param>
/// <param name="endNode">The ending node</param>
/// <param name="startPort">The starting port</param>
/// <param name="endPort">the ending port</param>
/// <param name="mapdata">The Mapdata to use for generating the unique id of the link.</param>
/// <param name="origLink">The original link</param>
/// <param name="toBeAddedLinks">The number of links yet to be added.</param>
/// <returns>The new link created.</returns>
private MapLink CreateNewLink(
MapNode startNode, MapNode endNode, MapPort startPort, MapPort endPort, MapData mapdata,
MapLink origLink, int toBeAddedLinks)
{
//Create new link
long newLinkId = GetUniqueId(typeof(MapLink), mapdata, toBeAddedLinks);
MapLink newLink = new MapLink();
newLink.Id = newLinkId;
newLink.Name = MapLinkNamePrefix + newLinkId;
//Add the nodes
newLink.AddNode(startNode);
newLink.AddNode(endNode);
//Add the ports
newLink.AddPort(startPort);
newLink.AddPort(endPort);
//Copy attributes of original link and set owner id of the new attributes. Also add to mapdata
CopyAttributes(origLink, newLink, newLinkId, mapdata);
//create a new attribute to store the original link id
MapAttribute origLinkIdAttr = new MapAttribute();
origLinkIdAttr.Name = "origLinkId";
origLinkIdAttr.StringValue = origLink.Id.ToString();
long newAttrId = GetUniqueId(typeof(MapAttribute), mapdata, 0);
origLinkIdAttr.Id = newAttrId;
origLinkIdAttr.OwnerType = "link";
origLinkIdAttr.OwnerId = newLink.Id;
origLinkIdAttr.Type = AttrTypeString;
//Add the new attribute to the new link and the map data
newLink.Attributes.Add(origLinkIdAttr);
mapdata.AddAttribute(origLinkIdAttr);
//Set new link's element type from original link
newLink.ElementType = origLink.ElementType;
return(newLink);
}
/// <summary>
/// Copies the attributes of an old link to a new one.
/// </summary>
/// <param name="origLink">The old link</param>
/// <param name="newLink">The new link</param>
/// <param name="newLinkId">The id of the new link</param>
/// <param name="mapdata">The mapdata into which the new attributes will be added.</param>
private void CopyAttributes(MapLink origLink, MapLink newLink, long newLinkId, MapData mapdata)
{
foreach (MapAttribute attr in origLink.Attributes)
{
//Create a new attribute and set its properties
MapAttribute newattr = new MapAttribute();
newattr.Id = GetUniqueId(typeof(MapAttribute), mapdata, 0);
newattr.OwnerId = newLinkId;
newattr.Name = attr.Name;
newattr.OwnerType = attr.OwnerType;
newattr.Type = attr.Type;
newattr.IntValue = attr.IntValue;
newattr.StringValue = attr.StringValue;
newattr.DoubleValue = attr.DoubleValue;
newattr.DateTimeValue = attr.DateTimeValue;
//Add new attribute to the new link
newLink.AddAttribute(newattr);
//Add new attribute to the new mapdata
mapdata.AddAttribute(newattr);
}
}
