CS3650: Visual Languages and Programming

Messages and Variables for Session Recording and Playback for Advanced Virtual Classroom

    Rupa Natarajan

Data Messages

    MsgID:7            Description:  URLs Pushed
    Variables:

• MainURL
• AudioURL
• VideoURL
• ForTeacherOnly (True or False) [note: student is allowed to push page only to teacher]

    MsgID:8            Description:  Instant Message
    Variables:   

• FromFirstName [note: sender's first name]
• FromLastName [note: sender's last name]
• ToFirstName [note: receiver's first name]
• ToLastName [note: receiver's last name]
• MsgColor
• IsAudio (True or False)
• IsBroadCast (True or False) [note: when true ToFirstName and ToLastName will be null]

    MsgID:9            Description: Whiteboard Drawing
    Variables:

• ShapeNum ( total # of shapes on the board e.g. N)
• ShapeType{i}(i=0,1,2......N-1) e.g. ShapeType0, ShapeType1.....[note: there are four shape types:  0:Line;1:Rectangle;2:Ellipse;3:RoundRect;4:Text;]
• If ShapeType is 4: Text, it will followed by
  • PosX{i}(i=0,1,2......N-1) e.g. PosX0, PosX1.......
  • PosY{i}(i=0,1,2......N-1) e.g. PosY0, PosY1.......
  • TextStr{i}(i=0,1,2......N-1) e.g. TextStr0, TextStr1.......
• Otherwise, for other shapes:
  • LeftTopX{i} (i=0,1,2......N-1) e.g. LeftTopX0, LeftTopX1.......
  • LeftTopY{i} (i=0,1,2......N-1) e.g. LeftTopY0, LeftTopY1.......
  • RightBottomX{i}(i=0,1,2......N-1) e.g. RightBottomX0, RightBottomX1.......
  • RightBottomY{i}(i=0,1,2......N-1) e.g. RightBottomY0, RightBottomY1......
  • LineStyle{i}(i=0,1,2......N-1) e.g. LineStyle0, LineStyle1......
  • LineColor{i}(i=0,1,2......N-1) e.g. LineColor0, LineColor1......
  • LineWidth{i}(i=0,1,2......N-1) e.g. LineWidth0, LineWidth1......
  • BrushStyle{i}(i=0,1,2......N-1) e.g. BrushStyle0, BrushStyle1......
  • BrushColor{i}(i=0,1,2......N-1) e.g. BrushColor0, BrushColor1....

    MsgID:1614       Description:  Push Permission
    Variables:

• Granted (True or False)
• ToFirstName
• ToLastName

Control and Configuration Messages

    MsgID:1600            Description:  Start Recording
    Variables:

• FileName [note: The session recorded and saved into this file]
• FilePath
• UseDefault (True or False) [note: When true FileName and FilePath are null]

    MsgID:1601            Description:  Stop Recording
    Variables:          

• FileName [note: The session recorded and saved into this file]
• FilePath

    MsgID:1602            Description:  Pause Recording
    Variables:          

• FileName [note: The session recorded and saved into this file]
• FilePath

    MsgID:1603            Description:  Resume Recording
    Variables:          

• FileName [note: The session recorded and saved into this file]
• FilePath

    MsgID:1604            Description:  Start Playback
    Variables:          

• FileName [note: Playback contents of this file]
• FilePath
• PlaybackMode [note: This can be Auto mode or manual mode]
• URLPlaybackInterval [note: The interval to wait after playing back a URL in AutoMode]
• OtherPlaybackInterval [note: The interval to wait after playing back other Message types except Push URL]

    MsgID:1605            Description:  Stop Playback
    Variables:          

• FileName
• FilePath

    MsgID:1606            Description:  Pause Playback
    Variables:          

• FileName
• FilePath

    MsgID:1607            Description:  Resume Playback
    Variables:          

• FileName [note: Playback contents of this file]
• FilePath

    MsgID:1608            Description:  Playback Next Message - Valid Only in Manual Mode
    Variables:          

• FileName [note: Playback contents of this file]
• FilePath

    MsgID:1609            Description:  Playback Previous Message - Valid Only in Manual Mode
    Variables:          

• FileName [note: Playback contents of this file]
• FilePath

    MsgID:1610            Description:  Playback First Message - Valid Only in Manual Mode
    Variables:          

• FileName [note: Playback contents of this file]
• FilePath

    MsgID:1611            Description:  Playback Last Message - Valid Only in Manual Mode
    Variables:          

• FileName [note: Playback contents of this file]
• FilePath

    MsgID:1612            Description:  Change Playback Options
    Variables:             

• PlaybackMode [note: This can be Auto mode or manual mode]
• URLPlaybackInterval [note: The interval to wait after playing back a URL in AutoMode]
• OtherPlaybackInterval [note: The interval to wait after playing back other Message types except Push URL]

    MsgID:1613            Description:  Error Message
    Variables:             

• ErrorDescription [note: Description of the error that occurred in Recording or Playback]

    MsgID:6            Description:  Operation Acknowledgement
    Variables:             

• Operation (Success or Failure)