This document describes the expected behaviour of SCC (the Qt State Chart Compiler) in regards to SCXML tags and features.

SCXML

  Ignored: version, profile, exmode

STATE

  Ignored: src

TRANSITION

  Ignored: anchor

  Additional: Qt:animation, a location expression that points to a QPropertyAnimation* object

  Notes: An event in a transition translates to a Qt signal in the state machine object. "*" would occur on any event. Prefix matching is not supported, but * and done events are supported. 

        Conditions are C++ boolean expressions.

PARALLEL

  Ignored: src

HISTORY:

  Notes: The history's default transition cannot have executable content. 

LOG:

  Notes: the level of the log translates to QtMsgType. expr is a c++ expression.

SEND:

  Partially supported: target (only "_internal")

  Ignored attributes: type, idlocation, hints

  Notes: The target attribute can be either empty for a regular event, "_internal" for an internal-queue event, or a location expression to emit a signal in an object.

CANCEL:

  Notes: ID is a string literal, not an expression

DATA:

  Ignored attributes: src

  Additional: Qt:type, to define a C++ type for this data element

  Notes: A data element is converted to a Qt property of the state-machine object. expr/text are C++ expressions

ASSIGN:

  Notes: If dataid is present rather than location, the generated code would use the Qt property system to assign the value. expr is a c++ expression.

PARAM

  Notes: either name, expr or inline-text can appear, as the parameters are translated to a QVariantList.

SCRIPT

  Notes: raw C++ code

Fully supported:

  INITIAL, FINAL, ONENTRY, ONEXIT, IF, ELSEIF, ELSE, LOG, CANCEL, DATAMODEL

Unsupported:

    INVOKE, CONTENT, DONEDATA, FINALIZE, ANCHOR, VALIDATE

Qt:property

  object

  property

  value

Qt:cpp

  text()

system variables

  _event

  _data

  _name

INVOKE

CONTENT

VALIDATE

DONEDATA

script

Qt:cpp

cond

(variables)

param

log

if/elseif/else

assign