norns 0.1.3

A Framwork for Interval Timer. Run multiple timers sequentially! easy to use, customizable, and with no common time-related bugs.

Norns

A Framework for Interval Timer

🚧 Alpha version - Use with care. 🚧

Norns [ˈnornez̠]

1. Goddesses in Norse mythology responsible for shaping the course of human destinies.
2. A Framework for Interval Timer that will make your time-management easier.

Features

• ⏰➞⏰➞⏰➞⏰ Run multiple timers sequentially.
• Customizable. You can set business-specific actions on timers.
• Easy to use. Don't worry about common bugs caused when dealing with time! Just describe your business logic to Norns.

Installing

dependencies:
  norns: ^0.1.2

import 'package:norns/norns.dart';

A simple Pomodoro Console App

final norns = Norns();
final timerMetadata = {1: 'Pomodoro', 2: 'Break Time'};
final pointMetadata = {1: 'elpased'};
final perOneSeconds = [pointPeriodic(key: 1, point: 1.s, period: 1.s)];

norns.addAllTimers([
  timer(key: 1, duration: 5.s, points: perOneSeconds),
  timer(key: 2, duration: 2.s, points: perOneSeconds),
]);
norns.setOnPoint((running, point) {
  final pointType = point.type.toShortString();
  final timerName = timerMetadata[running.key]?.padRight(10) ?? '';
  final pointName = pointMetadata[point.key] ?? '';
  final elpased = '${point.point - running.startedAt}'.substring(0, 7);

  print('[$timerName] [$pointType] $elpased $pointName');
});
norns.resume();

[Pomodoro  ] [Timer Start] 0:00:00 
[Pomodoro  ] [Point] 0:00:01 elpased
[Pomodoro  ] [Point] 0:00:02 elpased
[Pomodoro  ] [Point] 0:00:03 elpased
[Pomodoro  ] [Point] 0:00:04 elpased
[Pomodoro  ] [Point] 0:00:05 elpased
[Pomodoro  ] [Timer End] 0:00:05 
[Break Time] [Timer Start] 0:00:00 
[Break Time] [Point] 0:00:01 elpased
[Break Time] [Point] 0:00:02 elpased
[Break Time] [Timer End] 0:00:02

Usage

• addTimer and addAllTimers add timers to Norns
• resume starts Norns
• pause stop Norns
• reset initialize Norns
• breakCurrentRunningTimer skip the current running timer.
• setOnFire sets the onFire callback.
• setOnTimerChange sets the onTimerChange callback.
• setOnFinished sets the onFinished callback.
• removeOnFire removes the onFire callback
• removeOnTimerChange removes the onTimerChange callback.
• removeOnFinished removes the onFinished callback.

Norns Lifecycle

• onFire

  Called when the first startup.

• onTimerChange

  Called when timers change.

• onFinished

  Called when all timers finished.

• onPoint

  Called when:

  • a timer starts

  • a timer ends

  • a timer broken(skipped)

  • a time-point you set reached. you can set custom time-points with:

  • point

    The example below represents that a timer has a duration of 10 seconds and custom time-points of 5 seconds and 7 seconds.

    timer(
      duration: 10.s,
      points: [
        point(point: 5.s),
        point(point: 7.s)
      ],
    );
    

    and you can receive the events as follows.

    norns.setOnPoint((runningTimer, point) {
      if (point.isTimerStart) {
        // do something when a timer starts
      } 
      if (point.isTimerEnd) {
        // do something when a timer ends
      }
      if (point.isTimerBroken) {
        // do something when a timer is broken(skipped)
      }
      if (point.isPoint) {
        // user-defined actions here
      }
    });
    

  • pointFromEnd

    Maybe you want to set an action like 1 seconds left. The example below represents that a timer has a duration of 10 seconds and the custom time-point 9 seconds.

    timer(
      duration: 10.s,
      points: [
        pointFromEnd(point: 1.s),
      ],
    );
    

  • pointPeriodic

    Time-points that run periodically.

    timer(
      duration: 10.s,
      points: [
        pointPeriodic(point: 1.s, period: 1.s),
      ],
    );