State diagram demos

Very simple showing change from State1 to State2

    ---
    title: Very simple diagram
    ---
    stateDiagram
      accTitle: This is the accessible title
      accDescr:This is an accessible description
      State1 --> State2
    

This has classDef statements to apply style classes to specific states

Here are the classDef statements:

classDef notMoving fill:white
classDef movement font-style:italic
classDef badBadEvent fill:#f00,color:white,font-weight:bold,stroke-width:2px,stroke:yellow


And these are how they are applied:

class Still notMoving
class Moving, Crash movement
class Crash badBadEvent


    ---
    title: Very simple diagram
    ---
    stateDiagram
      direction TB

      accTitle: This is the accessible title
      accDescr: This is an accessible description

      classDef notMoving fill:white
      classDef movement font-style:italic
      classDef badBadEvent fill:#f00,color:white,font-weight:bold,stroke-width:2px,stroke:yellow

      [*]--> Still
      Still --> [*]
      Still --> Moving
      Moving --> Still
      Moving --> Crash
      Crash --> [*]

      class Still notMoving
      class Moving, Crash movement
      class Crash badBadEvent
      class end badBadEvent
    

Here is a diagram that uses the ::: operator to apply styles to states

Here are the classDef statements:

classDef notMoving fill:white
classDef movement font-style:italic
classDef badBadEvent fill:#f00,color:white,font-weight:bold,stroke-width:2px,stroke:yellow


And these are how they are applied:

[*] --> Still:::notMoving
...
Still --> Moving:::movement
...
Moving --> Crash:::movement
Crash:::badBadEvent --> [*]


Note that both the starting state and the end state have styles applied:
The start state has the start classDef style
and the end state has the stop classDef style applied.

    stateDiagram
      direction TB

		  accTitle: This is the accessible title
      accDescr: This is an accessible description

      classDef notMoving fill:white
      classDef movement font-style:italic
      classDef badBadEvent fill:#f00,color:white,font-weight:bold,stroke-width:2px,stroke:yellow

      [*] --> Still:::notMoving
      Still --> [*]
      Still --> Moving:::movement
      Moving --> Still
      Moving --> Crash:::movement
      Crash:::badBadEvent --> [*]
    

    stateDiagram-v2
      accTitle: very very simple state
      accDescr: This is a state diagram showing one state
      State1
    

States with spaces in them

      stateDiagram
        classDef yourState font-style:italic,font-weight:bold,fill:white

        yswsii: Your state with spaces in it
        [*] --> yswsii:::yourState
        [*] --> SomeOtherState
        SomeOtherState --> YetAnotherState
        yswsii --> YetAnotherState
        YetAnotherState --> [*]
    

You can label the relationships

    stateDiagram-v2
    [*] --> State1
    State1 --> State2 : Transition 1
    State1 --> State3 : Transition 2
    State1 --> State4 : Transition 3
    State1 --> [*]
    

This shows Composite states

    stateDiagram-v2
    [*] --> First
    First --> Second
    First --> Third

    state "the first composite" as First {
        [*] --> 1st
        state innerFirst {
          state "1 in innerFirst" as 1st1st
          1st2nd: 2 in innerFirst
          [*] --> 1st1st
          1st1st --> 1st2nd
          %% 1st2nd --> 1st
        }
        1st --> innerFirst
        innerFirst --> 2nd
    }
    state Second {
        2nd --> [*]
    }
    state Third {
        [*] --> 3rd
        3rd --> [*]
    }
    

Composite states can link to themselves

      stateDiagram-v2
            state Active {
              Idle
            }
            Inactive --> Idle: ACT
            Active --> Active: LOG
    

transition labels can span multiple lines using "br" tags or \n

      stateDiagram-v2
      [*] --> S1
      S1 --> S2: This long line uses a br tag
to create multiple
lines.
      S1 --> S3: This transition description uses \na newline character\nto create multiple\nlines.

    

You can add Notes

    stateDiagram-v2
      direction LR
      State1: A state with a note
      note right of State1
        Important information!
You can write notes.
And\nthey\ncan\nbe\nmulti-\nline.
      end note
      State1 --> State2
      note left of State2 : Notes can be to the left of a state\n(like this one).
      note right of State2 : Notes can be to the right of a state\n(like this one).