Reinstate Stored State from component

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Permalink Reply by David Rutten on August 28, 2011 at 4:18am

Restoring states should happen via:

 

GH_Document.StateServer.RestoreState(index, restored_objects, missing_objects)

 

However you cannot call this during a solution, since changing a state requires a new solution. You'll need to schedule a new solution using GH_Document.ScheduleSolution(delay, callback) (probably using a delay of 1 ms) and then you can reinstate your state from the callback. Do note that calling RestoreState() always causes a new solution to run, so you might still run into problems this way. You may need to completely rewrite the logic and leave out the solution bit. This is what the RestoreState function looks like:

 




Public Function RestoreState(ByVal index As Int32, _
                             <Out()> ByRef restored_objects As Int32, _
                             <Out()> ByRef missing_objects As Int32) As Boolean
  Dim state As GH_State = Me(index)

  For i As Int32 = 0 To state.StateCount - 1
    Dim id As Guid = state.StateData.Keys(i)
    Dim data As String = state.StateData.Values(i)

    Dim obj As IGH_DocumentObject = m_owner.FindObject(id, False)
    If (obj Is Nothing) Then
      missing_objects += 1
      Continue For
    End If

    If (Not TypeOf obj Is IGH_StateAwareObject) Then
      missing_objects += 1
      Continue For
    End If

    Dim sa_obj As IGH_StateAwareObject = DirectCast(obj, IGH_StateAwareObject)
    sa_obj.LoadState(data)

    restored_objects += 1
  Next

  m_owner.NewSolution(False) 'Leave this out.

  Return True
End Function

 

--

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Sander Mulders on August 28, 2011 at 5:29am

oeh, sounds like a lot of work to simply switch back a few toggles after a bake is done... I'll see what this piece of code brings me.

Permalink Reply by David Rutten on August 29, 2011 at 10:09am

I added an overload to RestoreState that now allows you to prevent the new solution, but this won't solve your immediate problem since you still cannot restore states while you're inside a solution.

 

--

David Rutten

david@mcneel.com

Poprad, Slovakia