Flexflow

Usage

defmodule Review do
  use Flexflow.Process, version: 1

  defmodule Reviewing do
    use Flexflow.Event
  end

  defmodule Submit do
    use Flexflow.Transition
  end

  ## Start event
  event {Start, "draft"}
  ## End event, `async` mode means this transition run's in a separated elixir process.
  event {End, "reviewed"}, async: true
  event {End, "canceled"}
  ## Intermediate event
  event "rejected"
  ## Custom event
  event Reviewing

  ## Define a transition
  ## `a ~> b` is a shortcut of `{a, b}`
  transition "modify1", "draft" ~> "draft"
  transition "cancel1", "draft" ~> "canceled"

  ## Custom transition
  transition Submit, "draft" ~> Reviewing

  transition "modify2", "rejected" ~> "rejected"
  transition "cancel2", "rejected" ~> "canceled"

  ## With custom name
  transition {Submit, "submit2"}, "rejected" ~> Reviewing

  transition "reject", Reviewing ~> "rejected"
  transition "agree", Reviewing ~> "reviewed"
end

Graphviz Dot

```dot // custom_mark digraph review { size ="4,4"; draft [label="draft",shape=doublecircle,color=".7 .3 1.0"]; reviewed [label="reviewed",style=bold,shape=circle,color=red]; canceled [label="canceled",shape=circle,color=red]; rejected [label="rejected",shape=box]; reviewing [label="reviewing",shape=box]; draft -> draft [label="modify1"]; draft -> canceled [label="cancel1"]; draft -> reviewing [label="submit_draft"]; rejected -> rejected [label="modify2"]; rejected -> canceled [label="cancel2"]; rejected -> reviewing [label="submit2"]; reviewing -> rejected [label="reject"]; reviewing -> reviewed [label="agree"]; } // custom_mark ```