Editing geometry while onActivePathChanged

[thomthom]

I'm using the ModelObserver's onActivePathChanged event to detect when components/groups are closed after editing. When that condition is met I call a method which deletes and adds some edges to a component definition in the model.

However, when an edge is added or removed onActivePathChanged is called again for every change. And since onActivePathChanged calls the method which causes the edges to be added or removed I now suddenly have an endless loop that runs until the call stack is full and SU bugsplats.

onActivePathChanged -- calls --> updateComponentMethod
updateComponentMethod -- when adding/removing edges; calls --> onActivePathChanged --> LOOP!!!

If I remove the lines that add or removed the edges the loop doesn't occur.
I have worked around it by setting a module variable when I start updating which makes onActivePathChanged exit immediately if the update flag is set to true.

But I don't understand at all why onActivePathChanged is called back when I add/remove edges. Some kind of weird bug?