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{{Short description|XML-based markup language}}
{{Use mdy dates|date=June 2013}}
{{Infobox file format
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| url = [http://www.w3.org/TR/scxml/ http://www.w3.org/TR/scxml/]
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'''SCXML''' stands for State Chart XML: State Machine Notation for Control Abstraction. It is an [[XML]]-based [[markup language]] that provides a generic [[state-machine]]-based execution environment based on [[Harel statechart]]s.
SCXML is able to describe complex [[finite
==Goals==
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==
According to the W3C SCXML specification,<ref>[http://www.w3.org/TR/scxml/ State Chart XML (SCXML): State Machine Notation for Control Abstraction specification]
*As a high-level dialog language controlling VoiceXML 3.0's encapsulated speech modules (voice form, voice picklist, etc.)
*As a voice application metalanguage, where in addition to VoiceXML 3.0 functionality, it may also control database access and business logic modules.
*As a multimodal control language in the MultiModal Interaction framework, combining VoiceXML 3.0 dialogs with dialogs in other modalities including keyboard and mouse, ink, vision, haptics, etc. It may also control combined modalities such as lipreading (combined [[speech recognition]] and vision) speech input with keyboard as fallback, and multiple keyboards for multi-user editing.
*As the state machine framework for a future version of CCXML.
*As an extended call center management language, combining CCXML call control functionality with computer-telephony integration for call centers that integrate telephone calls with computer screen pops, as well as other types of message exchange such as chats, instant messaging, etc.
*As a general [[process control]] language in other contexts not involving speech processing.
The draft W3C [[VoiceXML]] 3.0 specification<ref>[http://www.w3.org/TR/voicexml30/ Voice Extensible Markup Language (VoiceXML) 3.0 specification]</ref> includes State Chart and SCXML Representation to define functionality.
===Multimodal applications===
[[File:Multimodal2.png|A multimodal configuration]]
The W3C document Authoring Applications for the Multimodal Architecture<ref>[http://www.w3.org/TR/mmi-auth/ Authoring Applications for the Multimodal Architecture]</ref> describes a multimodal system that implements the W3C Multimodal Architecture and gives an example of a simple multimodal application authored using various W3C markup languages, including SCXML, CCXML, VoiceXML 2.1 and HTML.
(Apache Licensed, see on [http://jakarta.apache.org/commons/scxml/usecases/scxml-stopwatch.html this page])▼
==Implementations==
*[http://scxmlcc.org scxmlcc] An efficient scxml to C++ compiler.
*[http://jakarta.apache.org/commons/scxml/ Apache Commons SCXML], a pure Java library to parse and execute SCXML diagrams
*[https://github.com/fmorbini/scxmlgui SCXMLgui] Java Visual Editor for SCXML.▼
*[https://scion.scxml.io SCION] SCXML implemented in portable JavaScript.
*[https://github.com/Touffy/JSSCxml JSSCxml] a Web browser implementation
*[https://github.com/tklab-tud/uscxml uSCXML] C/C++ interpreter and transformer/compiler with language bindings for Java and C#. Full ECMAScript support via JavaScriptCore or Google's v8, additional LUA and Prolog datamodels, only rudimentary support for XPath datamodel. PROMELA datamodel for formal verification with the SPIN model-checker.
*[https://github.com/Phrogz/LXSC LXSC] Lua XML StateChart interpreter - parses and executes SCXML state machines with a Lua data model.
*[http://code.qt.io/cgit/qt/qtscxml.git Qt SCXML Engine] implemented in C++ as well and tightly integrated with their [[Signals and slots|Signals and Slots]] concept, with a visual editor integrated in [[Qt Creator]].
*[https://xstate.js.org XState] implemented in TypeScript.
== Inactive implementations ==
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*[http://pyscxml.spyderbrain.com The PySCXML Console] a web-based interactive SCXML console for running and interacting with SCXML documents. Supports the ECMAScript datamodel.
*[https://code.google.com/archive/p/scxml4flex/ SCXML4Flex] ActionScript/Flex partial port of [https://github.com/jroxendal/PySCXML PySCXML].
▲*[https://github.com/fmorbini/scxmlgui SCXMLgui] Java Visual Editor for SCXML.
==See also==
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==External links==
*[http://www.w3.org/TR/scxml/ W3C SCXML specification 1.0]
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{{W3C standards}}
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