Apply layout to diagram via scripting

[survex]

How to apply any layout (say spring) to diagram via scripting?

[qwerty]

ProjectInterface.LayoutDiagramEx

q.

[survex]

Here's a definition of the function:
LayoutDiagramEx (string DiagramGUID, long LayoutStyle, long Iterations, long LayerSpacing, long ColumnSpacing, boolean SaveToDiagram)

And description of LayoutStyle parameter:

LayoutStyle accepts the following options
•      Default Options:
    - lsDiagramDefault
    - lsProgramDefault
 
•      Cycle Removal Options:
    - lsCycleRemoveGreedy
    - lsCycleRemoveDFS
 
•      Layering Options:
    - lsLayeringLongestPathSink
    - lsLayeringLongestPathSource

lsLayeringOptimalLinkLength
 
•      Initialize Options:
    - IsInitializeNaive
    - IsInitializeDFSOut

IsInitializeDFSIn
 
•      Crossing Reduction Option:
    - lsCrossReduceAggressive

•      Layout Options - Direction

lsLayoutDirectionUp

lsLayoutDirectionDown

lsLayoutDirectionLeft

lsLayoutDirectionRight

And what should I pass as LayoutStyle parameter? What kind of long should it be?

[qwerty]

Ah, that help... Look into the constants that are defined in the ScriptingLib MDG. Or probably you number the list which appears after ConstLayoutStyles Enum in the help.

q.

[survex]

Here's the working code snippet:

!INC Local Scripts.EAConstants-JScript

function main ()
{
      var DiagramGUID, LayoutStyle, Iterations, LayerSpacing, ColumnSpacing, SaveToDiagram;
      var Project as EA.Project;
      
      Project = Repository.GetProjectInterface();
      
      DiagramGUID = Project.GUIDtoXML( Repository.GetCurrentDiagram().DiagramGUID );
      
      //See ConstLayoutStyles in EAConstants-JScript
      //LayoutStyle = lsDiagramDefault
      LayoutStyle = lsCycleRemoveDFS | lsLayeringOptimalLinkLength | lsInitializeDFSOut | lsLayoutDirectionDown;
      
      Iterations = 4;
      LayerSpacing = 20;
      ColumnSpacing = 20;
      SaveToDiagram = false;

      Project.LayoutDiagramEx( DiagramGUID, LayoutStyle, Iterations, LayerSpacing, ColumnSpacing, SaveToDiagram );
}

main();