protected override bool UpdateTarget(ReceiveContext context)
{
if (SubmissionStatusModel.GetInstance().Role == "student" &&
sender_.Role == "instructor")
{
Guid id1;
Guid id2;
using (Synchronizer.Lock(SubmissionStatusModel.GetInstance().SyncRoot)){
id1 = SubmissionStatusModel.GetInstance().Id;
}
using (Synchronizer.Lock(sender_.SyncRoot)) {
id2 = sender_.Id;
}
if (id1 == id2)
{
using (Synchronizer.Lock(SubmissionStatusModel.GetInstance().SyncRoot)) {
SubmissionStatusModel.GetInstance().SubmissionStatus = SubmissionStatusModel.Status.Received;
}
}
}
else if (SubmissionStatusModel.GetInstance().Role == "instructor" &&
sender_.Role == "student")
{
Guid id1;
using (Synchronizer.Lock(sender_.SyncRoot)) {
id1 = sender_.Id;
}
using (Synchronizer.Lock(SubmissionStatusModel.GetInstance().SyncRoot)) {
///we need to toggle the Id in order for the listener to recognize the event.
SubmissionStatusModel.GetInstance().Id = Guid.Empty;
SubmissionStatusModel.GetInstance().Id = id1;
}
}
return(true);
}
public SubmissionStatusNetworkService(SendingQueue sender, RoleModel role)
{
submission_status_model_ = SubmissionStatusModel.GetInstance();
if (role is StudentModel)
{
submission_status_model_.Role = "student";
submission_status_model_.Changed["SubmissionStatus"].Add(new PropertyEventHandler(this.StudentSendStatus));
}
else if (role is InstructorModel)
{
submission_status_model_.Role = "instructor";
submission_status_model_.Changed["Id"].Add(new PropertyEventHandler(this.InstructorSendStatus));
}
sender_ = sender;
}
/// <summary>
/// Send the current ink as a student submission slide
/// </summary>
/// <param name="sender">The object which sent this event, i.e. this class</param>
/// <param name="args">The parameters for the property</param>
private void HandleSendSubmission(object sender, PropertyEventArgs args)
{
if (this.m_SendingLock)
{
return;
}
using (Synchronizer.Lock(SubmissionStatusModel.GetInstance().SyncRoot)) {
SubmissionStatusModel.GetInstance().SubmissionStatus = SubmissionStatusModel.Status.NotReceived;
}
///declare variables we will be using
UW.ClassroomPresenter.Network.Messages.Message pres, deck, slide, sheet;
// Construct the message to send
using (this.m_Model.Workspace.Lock()) {
// Add the presentation
if (this.m_Model.Workspace.CurrentPresentation == null)
{
return;
}
///the presentation message we will be sending
pres = new PresentationInformationMessage(this.m_Model.Workspace.CurrentPresentation);
pres.Group = Groups.Group.Submissions;
//Add the current deck model that corresponds to this slide deck at the remote location
if ((~this.m_Model.Workspace.CurrentDeckTraversal) == null)
{
return;
}
using (Synchronizer.Lock((~this.m_Model.Workspace.CurrentDeckTraversal).SyncRoot)) {
DeckModel dModel = (~this.m_Model.Workspace.CurrentDeckTraversal).Deck;
foreach (DeckPairModel match in this.m_Model.Workspace.DeckMatches)
{
///check to see if the decks are the same
if (match.LocalDeckTraversal.Deck == (~this.m_Model.Workspace.CurrentDeckTraversal).Deck)
{
dModel = match.RemoteDeckTraversal.Deck;
}
}
///create the deck message from this matched deck
deck = new DeckInformationMessage(dModel);
///make the deck a submission type deck.
deck.Group = Groups.Group.Submissions;
///tack this message onto the end.
pres.InsertChild(deck);
///add the particular slide we're on the to message.
if ((~this.m_Model.Workspace.CurrentDeckTraversal).Current == null)
{
return;
}
using (Synchronizer.Lock((~this.m_Model.Workspace.CurrentDeckTraversal).Current.Slide.SyncRoot)) {
// Add the Slide Message
slide = new StudentSubmissionSlideInformationMessage((~this.m_Model.Workspace.CurrentDeckTraversal).Current.Slide, Guid.NewGuid(), Guid.NewGuid());
slide.Group = Groups.Group.Submissions;
deck.InsertChild(slide);
// Find the correct user ink layer to send
RealTimeInkSheetModel m_Sheet = null;
int count = 0;
foreach (SheetModel s in (~this.m_Model.Workspace.CurrentDeckTraversal).Current.Slide.AnnotationSheets)
{
if (s is RealTimeInkSheetModel && (s.Disposition & SheetDisposition.Remote) == 0)
{
m_Sheet = (RealTimeInkSheetModel)s;
count++;
}
}
// DEBUGGING
if (count > 1)
{
Debug.Assert(true, "Bad Count", "Bad");
}
// Find the existing ink on the slide
Ink extracted;
using (Synchronizer.Lock(m_Sheet.Ink.Strokes.SyncRoot)) {
// Ensure that each stroke has a Guid which will uniquely identify it on the remote side
foreach (Stroke stroke in m_Sheet.Ink.Strokes)
{
if (!stroke.ExtendedProperties.DoesPropertyExist(InkSheetMessage.StrokeIdExtendedProperty))
{
stroke.ExtendedProperties.Add(InkSheetMessage.StrokeIdExtendedProperty, Guid.NewGuid().ToString());
}
}
// Extract all of the strokes
extracted = m_Sheet.Ink.ExtractStrokes(m_Sheet.Ink.Strokes, ExtractFlags.CopyFromOriginal);
}
// Find the Realtime ink on the slide
RealTimeInkSheetModel newSheet = null;
using (Synchronizer.Lock(m_Sheet.SyncRoot)) {
newSheet = new RealTimeInkSheetModel(Guid.NewGuid(), m_Sheet.Disposition | SheetDisposition.Remote, m_Sheet.Bounds);
using (Synchronizer.Lock(newSheet.SyncRoot)) {
newSheet.CurrentDrawingAttributes = m_Sheet.CurrentDrawingAttributes;
}
}
// Add a message to *create* the student's RealTimeInkSheetModel on the instructor client (without any ink).
sheet = SheetMessage.ForSheet(newSheet, SheetMessage.SheetCollection.AnnotationSheets);
sheet.Group = Groups.Group.Submissions;
slide.InsertChild(sheet);
//Scale the ink if necessary
if (ViewerStateModel.NonStandardDpi)
{
extracted.Strokes.Transform(ViewerStateModel.DpiNormalizationSendMatrix);
}
// Add a message to copy the ink from the student's RealTimeInkSheetModel to the just-created sheet on the instructor.
sheet = new InkSheetStrokesAddedMessage(newSheet, (Guid)slide.TargetId, SheetMessage.SheetCollection.AnnotationSheets, extracted);
sheet.Group = Groups.Group.Submissions;
slide.InsertChild(sheet);
///Add each text and image sheet into the message as children of the ink sheet if it is public
foreach (SheetModel s in (~this.m_Model.Workspace.CurrentDeckTraversal).Current.Slide.AnnotationSheets)
{
if (s is TextSheetModel && !(s is StatusLabel) && (s.Disposition & SheetDisposition.Remote) == 0)
{
TextSheetModel text_sheet = (TextSheetModel)s;
text_sheet = (TextSheetModel)text_sheet.Clone();
///some ugly code here due to synchronization
bool sheet_is_public;
using (Synchronizer.Lock(text_sheet.SyncRoot)) {
sheet_is_public = text_sheet.IsPublic;
}
if (sheet_is_public)
{
TextSheetMessage t_message = new TextSheetMessage(text_sheet, SheetMessage.SheetCollection.AnnotationSheets);
t_message.Group = Groups.Group.Submissions;
slide.InsertChild(t_message);
}
}
if (s is ImageSheetModel && !(s is StatusLabel) && (s.Disposition & SheetDisposition.Remote) == 0)
{
ImageSheetModel image_sheet = (ImageSheetModel)s;
image_sheet = (ImageSheetModel)image_sheet.Clone();
ImageSheetMessage i_message = new ImageSheetMessage(image_sheet, SheetMessage.SheetCollection.AnnotationSheets);
i_message.Group = Groups.Group.Submissions;
slide.InsertChild(i_message);
}
}
//Lock the current sending.
this.LockSending();
// Send the message
this.m_Sender.Send(pres);
}
}
}
}
public SubmissionStatusMessage(Message parent, SerializedPacket p) : base(parent, p)
{
this.sender_ = (!SerializedPacket.IsNullPacket(p.PeekNextPart())) ?
new SubmissionStatusModel(p.PeekNextPart()) : null; p.GetNextPart();
}
/// <summary>
/// constructor for creating a confirmation message from the instructor.
/// Here Id is the id of the student this message is for.
/// </summary>
/// <param name="status"></param>
/// <param name="id"></param>
public SubmissionStatusMessage(SubmissionStatusModel submission_model)
: base(Guid.NewGuid())
{
///the model that send this.
sender_ = submission_model;
}
