tree_state_machine

tree_state_machine is a Dart package for defining and executing hierarchical state machines.

Features

• Hierarchical state trees
• Asynchronous message processing
• Stream based event notifications
• Declarative state definitions
• Nested state machines

Overview

The tree_state_machine package provides APIs for defining a hierarchical tree of states, and creating state machines that can manage an instance of a state tree. The state machine can be used to dispatch messages to the current state for processing, and receive notifications as state transitions occur.

Refer to UML state machines for further conceptual background on hierarchical state machines.

Documentation

See the API documentation for details on the following topics:

• Getting started
• State Trees
• Message Handlers
• Transition Handlers
• State Machines

Further References

• The tree_state_router package, for declarative routing in Flutter apps based on a TreeStateMachine.