def RenderCell()

in render-wallboard.py [0:0]

• 49 lines of code
• 28 McCabe index (conditional complexity)

def RenderCell(WallboardName, Row, Column):
    global AgentStates,Thresholds,Logger,Data,Calculations
    
    #
    # Given a particular cell, figure out the right colours and cell contents.
    # A cell may contain static text, a number or agent state derived directly
    # from the data read from the DDB table, or it may be a calculation we need
    # to perform. Also need to ensure that thresholds are checked for numerical
    # values where present.
    #
    Address      = "R"+str(Row)+"C"+str(Column)
    HTML         = ""
    AgentDetails = ""
    
    if Address not in Cells[WallboardName]: return(HTML)
    Cell = Cells[WallboardName][Address]
    LocalStates = AgentStates[WallboardName]

    Style = [] 
    Style.append("border: 1px solid black; padding: 5px;")
    if "TextColour" in Cell: Style.append("color: "+Cell["TextColour"]+";")
    if "TextSize"   in Cell: Style.append("font-size: "+Cell["TextSize"]+"px;")

    Background = ""
    if "Reference" in Cell:
        State = ""
        if Cell["Reference"] in Calculations[WallboardName]: # We need to calculate this one
            Data[Cell["Reference"]] = DoCalculation(WallboardName, Cell["Reference"])
        elif Cell["Reference"].lower() in Data: # Data already exists
            State = Data[Cell["Reference"]]
        elif Cell["Reference"] == "=allagents": # Any agent at all
            (AgentDetails, State) = GetNextAgent(False)
        elif Cell["Reference"] == "=activeagents": # Active agents only
            (AgentDetails, State) = GetNextAgent(True)

        if len(State) > 0:
            State = State.lower()
            if State in LocalStates:
                Background = LocalStates[State]

    if "ThresholdReference" in Cell:
        NewBackground = CheckThreshold(WallboardName, Cell["ThresholdReference"])
        if len(NewBackground) > 0: Background = NewBackground
        
    if len(Background) == 0:
        if "BackgroundColour" in Cell: Background = Cell["BackgroundColour"]
    if len(Background) > 0: Style.append("background: "+Background+";")

    Tag = "R"+str(Row)+"C"+str(Column)
    HTML += "<td label=\""+Tag+"\" class=\""+Tag+"\""
    if "Rows"     in Cell: HTML += " rowspan=\""+Cell["Rows"]+"\""
    if "Columns"  in Cell: HTML += " colspan=\""+Cell["Columns"]+"\""
    if len(Style) > 0: HTML += " style=\""+" ".join(Style)+"\""
    HTML += ">"

    if "Text" in Cell: HTML += "<div class=\"text\">"+Cell["Text"]+"</div>"
    if "Reference" in Cell:
        if Cell["Reference"] in Data:
            HTML += "<div class=\"data\">"+Data[Cell["Reference"]]+"</div>"
        elif Cell["Reference"] == "=allagents" or Cell["Reference"] == "=activeagents":
            HTML += AgentDetails
        else:
            Logger.warning("Data reference "+Cell["Reference"]+" in cell "+Address+" does not exist for wallboard "+WallboardName)

    HTML += "</td>"
    return(HTML)