/// <summary>
/// This is called by <see cref="Group.ExpandSubGraph"/> to make sure the group's
/// member <see cref="Node"/>s and <see cref="Link"/>s all exist in the diagram.
/// </summary>
/// <param name="sg">a <see cref="Group"/></param>
/// <remarks>
/// <para>
/// This depends on the diagram's <see cref="Northwoods.GoXam.Diagram.Model"/>
/// being a <see cref="Northwoods.GoXam.Model.ISubGraphModel"/>.
/// You might want to override this method to bring in data to the model,
/// if the needed data isn't in the model already.
/// </para>
/// </remarks>
public virtual void RealizeSubGraphMembers(Group sg) {
if (sg == null) return;
Diagram diagram = this.Diagram;
if (diagram != null && ((diagram.Filter & PartManagerFilter.CollapsedSubGraphMembers) != 0) && sg.IsBoundToData) {
ISubGraphModel sgmodel = diagram.Model as ISubGraphModel;
if (sgmodel == null) return;
GroupPanel gp = sg.GroupPanel;
Point pos = (gp != null ? sg.GetElementPoint(gp, Spot.TopLeft) : new Point());
foreach (Object childdata in sgmodel.GetMemberNodesForGroup(sg.Data)) {
if (FindNodeForData(childdata, sgmodel) == null) {
AddNodeForData(childdata, sgmodel);
if (gp != null) {
Node mem = FindNodeForData(childdata, sgmodel);
if (mem != null) {
Point loc = mem.Position;
if (Double.IsNaN(loc.X) || Double.IsNaN(loc.Y)) mem.Position = pos;
}
}
}
}
ISubGraphLinksModel sglmodel = diagram.Model as ISubGraphLinksModel;
if (sglmodel != null) {
foreach (Object childdata in sglmodel.GetMemberLinksForGroup(sg.Data)) {
if (FindLinkForData(childdata, sglmodel) == null) AddLinkForData(childdata, sglmodel);
}
}
}
}
