protected override Message MakeBeaconMessage()
{
using(Synchronizer.Lock(this.m_Model.Participant.SyncRoot)) {
if(this.m_Model.Participant.Role == null)
return null;
using(Synchronizer.Lock(this.m_Model.Participant.Role.SyncRoot)) {
Message role = RoleMessage.ForRole(this.m_Model.Participant.Role);
if(this.m_Model.Participant.Role is InstructorModel) {
InstructorModel instructor = ((InstructorModel) this.m_Model.Participant.Role);
if(instructor.CurrentPresentation != null)
role.InsertChild(new InstructorCurrentPresentationChangedMessage(instructor.CurrentPresentation));
if(instructor.CurrentDeckTraversal != null) {
using(Synchronizer.Lock(instructor.CurrentDeckTraversal.SyncRoot)) {
Message traversal = new InstructorCurrentDeckTraversalChangedMessage(instructor.CurrentDeckTraversal);
Message predecessor = traversal.Predecessor;
traversal.Predecessor = new SlideInformationMessage(instructor.CurrentDeckTraversal.Current.Slide);
traversal.Predecessor.InsertChild(new TableOfContentsEntryMessage(instructor.CurrentDeckTraversal.Current));
traversal.Predecessor.AddOldestPredecessor(predecessor);
role.InsertChild(traversal);
}
}
}
return role;
}
}
}
/// <summary>
/// Even though we are not an instructor, here we fake an instructor beacon message for the purpose of unicast to multicast
/// bridging.
/// </summary>
/// <returns></returns>
protected Message NonInstructorMakeBeaconMessage()
{
InstructorModel instructor = new InstructorModel(m_NonInstructorId);
Message role = RoleMessage.ForRole(instructor);
using (Synchronizer.Lock(this.m_Model.Workspace)) {
if (this.m_Model.Workspace.CurrentPresentation != null) {
using (Synchronizer.Lock(this.m_Model.Workspace.CurrentPresentation.SyncRoot)) {
if (this.m_Model.Workspace.CurrentPresentation.Value != null) {
role.InsertChild(new InstructorCurrentPresentationChangedMessage(this.m_Model.Workspace.CurrentPresentation));
}
}
}
if (this.m_Model.Workspace.CurrentDeckTraversal != null) {
using (Synchronizer.Lock(this.m_Model.Workspace.CurrentDeckTraversal.SyncRoot)) {
if (this.m_Model.Workspace.CurrentDeckTraversal.Value != null) {
Message traversal = new InstructorCurrentDeckTraversalChangedMessage(this.m_Model.Workspace.CurrentDeckTraversal.Value,false);
Message predecessor = traversal.Predecessor;
using (Synchronizer.Lock((~this.m_Model.Workspace.CurrentDeckTraversal).SyncRoot)) {
using (Synchronizer.Lock((~this.m_Model.Workspace.CurrentDeckTraversal).Current.SyncRoot)) {
traversal.Predecessor = new SlideInformationMessage((~this.m_Model.Workspace.CurrentDeckTraversal).Current.Slide);
TableOfContentsModel.Entry entry = (~this.m_Model.Workspace.CurrentDeckTraversal).Current;
if (entry != null)
traversal.Predecessor.InsertChild(new TableOfContentsEntryMessage(entry));
traversal.Predecessor.AddOldestPredecessor(predecessor);
role.InsertChild(traversal);
}
}
}
}
}
}
return role;
}
