public void Connect()
{
try
{
// - Display wait message
Cursor.Current = Cursors.WaitCursor;
// - Get conferences ordered by start time
Conference[] confs = DBHelper.GetConferences();
// - Add items with parents: year, month, date
TreeNode lastNode = null;
Conference lastConf = null;
if (confs != null && confs.Length > 0)
{
this.Nodes.Clear();
}
foreach (Conference conf in confs)
{
TreeNode newNode = new TreeNode(string.Format(CultureInfo.CurrentCulture, Strings.Conference,
conf.Start.ToShortTimeString(), conf.Description));
newNode.Tag = conf;
newNode.ImageIndex = conferenceImageIndex;
newNode.SelectedImageIndex = conferenceImageIndex;
TreeNode parent = null;
bool tripSwitch = (lastNode == null);
#region Add parents for this node
// Optimize creation of parents by tracking the last node & using the knowledge
// that confs is organized by startTime (thank you, Mr. SQL, for the "order by" command.)
// My apologies for the lack of readability of this code. It _was_ worse...
if (tripSwitch || conf.Start.Year != lastConf.Start.Year)
{
parent = this.Nodes.Add(conf.Start.Year.ToString(CultureInfo.InvariantCulture));
parent.Tag = ParentNode.Year;
parent.ImageIndex = folderImageIndex;
parent.SelectedImageIndex = parent.ImageIndex;
if (tripSwitch != true)
{
tripSwitch = true;
}
}
if (tripSwitch || conf.Start.Month != lastConf.Start.Month)
{
if (!tripSwitch)
{
parent = lastNode.Parent.Parent.Parent;
}
parent = parent.Nodes.Add(conf.Start.ToString("MMMM", CultureInfo.InvariantCulture));
parent.Tag = ParentNode.Month;
parent.ImageIndex = folderImageIndex;
parent.SelectedImageIndex = parent.ImageIndex;
if (tripSwitch != true)
{
tripSwitch = true;
}
}
if (tripSwitch || conf.Start.Day != lastConf.Start.Day)
{
if (!tripSwitch)
{
parent = lastNode.Parent.Parent;
}
parent = parent.Nodes.Add(conf.Start.ToLongDateString());
parent.Tag = ParentNode.Date;
parent.ImageIndex = folderImageIndex;
parent.SelectedImageIndex = parent.ImageIndex;
}
else
{
parent = lastNode.Parent;
}
#endregion
// Pri3: Optimize getting of participants/streams. Try to find a way to do it only after
// each conference is expanded (note that a conference can't be "expanded" if it doesn't
// have any children yet. consider using a placeholder)
#region Get participants / streams
Participant[] participants = DBHelper.GetParticipants(conf.ConferenceID);
foreach (Participant part in participants)
{
// Create Participant node
TreeNode partNode = new TreeNode(string.Format(CultureInfo.CurrentCulture,
Strings.Participant, part.CName));
partNode.Tag = part;
partNode.ImageIndex = participantImageIndex;
partNode.SelectedImageIndex = partNode.ImageIndex;
// Add all of the streams for this participant
Stream[] streams = DBHelper.GetStreamsFaster(part.ParticipantID);
foreach (Stream str in streams)
{
TreeNode streamNode = partNode.Nodes.Add(string.Format(CultureInfo.CurrentCulture,
Strings.Stream, str.Name));
streamNode.Tag = str;
// Set the payload type icon
MSR.LST.Net.Rtp.PayloadType payload = (MSR.LST.Net.Rtp.PayloadType)Enum.Parse(typeof(MSR.LST.Net.Rtp.PayloadType), str.Payload);
if (payload == MSR.LST.Net.Rtp.PayloadType.dynamicVideo)
{
streamNode.ImageIndex = videoImageIndex;
}
else if (payload == MSR.LST.Net.Rtp.PayloadType.dynamicAudio)
{
streamNode.ImageIndex = soundImageIndex;
}
else //if( payload == MSR.LST.Net.Rtp.PayloadType.dynamicPresentation )
{
streamNode.ImageIndex = presentationImageIndex;
}
streamNode.SelectedImageIndex = streamNode.ImageIndex;
}
newNode.Nodes.Add(partNode);
}
#endregion
parent.Nodes.Add(newNode);
lastNode = newNode;
lastConf = conf;
}
foreach (TreeNode rootNode in base.Nodes)
{
rootNode.Expand();
}
this.canConnect = true;
// - Remove wait message
Cursor.Current = Cursors.Default;
}
catch
{
this.canConnect = false;
}
}