The Stateflow® API does not currently support the direct creation of supertransitions. Supertransitions are transitions between different levels in a chart. A supertransition can be between a state in a top-level chart and a state in one of its substates, or between states residing in different substates. For a better understanding of supertransitions, see Move Between Levels of Hierarchy by Using Supertransitions.
You can use a workaround for indirectly creating supertransitions. In this example, a supertransition is desired from a junction inside a subchart to a junction outside the subchart. In order to use the Stateflow API to create the supertransition in this example, first use the API to create the superstate as an ordinary state with a transition between its contained junction and a junction outside it.
Now set the
IsSubchart property of the state A to true (=1).
This step makes state
A a subchart, and the transition between the
junctions is now a supertransition.
You can also connect supertransitions to and from objects in an existing subchart
A, for example) with these steps:
Save the original position of subchart
to a temporary workspace variable.
For example, if the subchart
A has the API handle
sA, store its position with this command:
sA_pos = sA.Position;
A to a state by setting
IsSubchart property to false (=0).
sA.IsSubchart = 0;
A by setting the
IsGrouped property to false (=0).
sA.IsGrouped = 0;
When you convert a subchart to a normal state, it stays grouped to hide the contents of the subchart. When you ungroup the subchart, it might resize to display its contents.
Make the necessary transition connections.
See Create New Objects in the Chart for an example of creating a transition.
IsSubchart property of state
A back to true (=1).
sA.IsSubchart = 1;
A its original
sA.Position = sA_pos;
When you convert a subchart to a normal state and ungroup it, it might resize to accommodate the size of its contents. The first step of this procedure stores the original position of the subchart so that this position can be restored after the transition connection is made.