NeomStopwatch class

Audio: tracking listening time per media item (CaseteSession)
Books: tracking total reading session + per-page duration (NupaleSession)
Generator: tracking frequency chamber sessions

Singleton stopwatch manager supporting multiple independent references.

Used for:

Each reference (e.g. media item ID, book name, page key) gets its own Stopwatch instance with accumulated time across pause/resume cycles.

Constructors

currentReference ↔ String: getter/setter pair
hashCode → int: The hash code for this object.
no setterinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

commitLap({String? ref}) → void: Resets the lap counter for ref and restarts timing from 0. Call this after the lap value has been safely captured.
elapsed({String? ref}) → int: Returns total elapsed seconds for ref (accumulated + current if running).
elapsedMilliseconds({String? ref}) → int: Returns total elapsed milliseconds for ref.
isRunning({String? ref}) → bool: Whether a stopwatch exists and is running for ref.
lap({String? ref}) → int: Returns elapsed seconds for ref without resetting. Call commitLap after the value has been safely captured/stored.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
pause({String? ref}) → void: Pauses the stopwatch for ref and accumulates elapsed time.
reset({String? ref}) → void: Resets the accumulated time for ref to 0 without removing the stopwatch.
resume() → void
start({String? ref}) → void: Starts (or resumes) the stopwatch for ref.
stop({String? ref}) → int: Stops the stopwatch for ref and returns total accumulated seconds.
stopAndClear(String ref) → int: Stops, removes the stopwatch for ref, and returns total seconds.
toString() → String: A string representation of this object.
inherited