@startuml Trends

    participant DD                  as DD
    participant TD                  as TD
    participant SW                  as SW
    participant UI                  as UI
    actor       USER                as US

    'Possible actions and interaction types
    ' TD -> SW: MSG: Message
    ' SW -> TD: MSG: Message
    ' SW -> UI: CMD: command
    ' UI -> SW: ACT: Action
    ' US -> UI: User actions are:
    '   ENT: User enters a value or string
    '   TCH: User touches a button (RadioButton, CheckBox, ...)
    '   SET: User sets/slides a slider
    '   SCL: User scrolls a flipable area
    '
    'Messages conventions:
    '[x<hex message ID> <Req/Rsp/Dat>  \n  <P1>,<P..>]
    '[x<hex message ID> <Req/Rsp/Dat>  \n  <P1>,# certain amount of parameters according to the content]
    '[x<hex message ID> <Req/Rsp/Dat>  \n  <P1>,X The rest of the parameters do not matter.]

    note over UI
        See Vitals SDD for details on Vitals Interval Timer
    end note

    == Trends Data - Data Collection ==
    DD -> SW: MSG: [x1F: Data]\nDD Conductivity Data
    SW -> SW: ACT: Cache Collected Data
    TD -> SW: MSG: [x24: Data]\nPressure Data
    SW -> SW: ACT: Cache Collected Data
    TD -> SW: MSG: [x3D: Data]\nSaline Bolus Data
    SW -> SW: ACT: Cache Collected Data
    TD -> SW: MSG: [x3E: Data]\nUltrafiltration Data
    SW -> SW: ACT: Cache Collected Data
    TD -> SW: MSG: [x4F: Data]\nSet Point Data
    SW -> SW: ACT: Cache Collected Data

    == Trends History - Data Collection ==
    TD -> SW: MSG: [x3B: id]\nTreatment Log Alarm
    SW -> SW: Store Treatment Log Alarm data
    SW -> UI: CMD: Display new Trend History entry
    TD -> SW: MSG: [x3D: eventId]\nTreatment Log Event
    SW -> SW: Store Treatment Log Event data
    SW -> UI: CMD: Display new Trend History entry

    == Interval Timer Timeout==
    SW -> SW: ACT: Interval Timer Timeout
    SW -> UI: ACT: onDidTimeout
    alt Interval is OFF
        UI -> SW: ACT: onNoVitalsRecord
        SW -> SW: ACT: Record cached Trend Data as new entry (no Vitals)
        SW -> UI: CMD: Display new Trend Data entry
        SW -> SW: ACT: Clear Cached Data
    else Interval is ON
        alt Blood Pressure Cuff is Enabled
            UI -> SW: ACT: onIntervalRequestVitals
            SW -> SW: ACT: Snapshot and Timestamp Cached Data
            SW -> TD: MSG: [x63: Req]\nVitals Request
            alt accepted
                TD -> SW: MSG: [x64: Rsp 1]\nVitals Response
                alt Vitals Received
                    TD -> SW: MSG: [x65: Data]\nVitals Data
                    SW -> SW: ACT: Record cached Trend Data and Vitals Data as new entry 
                    SW -> UI: CMD: Display new Trend Data entry
                    SW -> SW: ACT: Clear Cached Data
                else Vitals Wait 2 Minute Timeout
                    SW -> UI: CMD: onDidTimeout
                    UI -> SW: ACT: onIntervalTimeoutVitals
                    SW -> SW: ACT: Record snapshot Trend Data as new entry
                    SW -> UI: CMD: Display new Trend Data entry
                    SW -> SW: ACT: Clear Cached Data
                end
            else rejected
                TD -> SW: MSG: [x64: Rsp 0]\nVitals Response
                SW -> UI: CMD: Vitals Request Adjustment Triggered
                UI -> US: ACT: Manual Vitals Pop-up
                US -> UI: TCH: Enter Manual Vitals Measurement
                UI -> SW: ACT: onManualVitals
                SW -> SW: ACT: Record Trend Data entry
                SW -> UI: CMD: Display new Trend Data entry
                SW -> SW: ACT: Clear Cached Data
            end
        end
    end

    == Clearing Trends Data and Trends History ==
    TD -> SW: MSG: [0x12: Data]\nTD OpMode
    SW -> UI: InTreatment
    UI -> SW: doClearData
    SW -> SW: Clear Trends Data and History

@enduml