The Paraview slice handles are not shown in Trame view-port!

[NimaGhorab]

Hello guys.
This is my function that opens a PVD file and sets a slice item after the PVD file is loaded:

def open_pvd_file_paraview(path: str):
    with server.state:
        server.reader = pvs.PVDReader(FileName=path)
        server.surface = pvs.Show(proxy=server.reader)
        # server.surface.Representation = server.state.representation
        server.surface.SetRepresentationType(server.state.representation)
        point_contour_names = [array.Name for array in server.reader.PointData]
        server.state.contour_list = point_contour_names
        server.state.contour = point_contour_names[0]
        server.state.timestep_list = [str(timestep) for timestep in pvs.GetAnimationScene().TimeKeeper.TimestepValues]
        server.state.timestep = server.state.timestep_list[-1]

        slice1 = pvs.Slice(registrationName='Slice1', Input=server.reader)
        slice1.SliceType = 'Plane'
        slice1.HyperTreeGridSlicer = 'Plane'
        slice1.UseDual = 0
        slice1.Crinkleslice = 0
        slice1.Triangulatetheslice = 1
        slice1.SliceOffsetValues = [0.0]
        slice1.PointMergeMethod = 'Uniform Binning'

        renderView1 = pvs.GetActiveViewOrCreate('RenderView')

        slice1Display = pvs.Show(slice1, renderView1, 'GeometryRepresentation')
        pvs.SetActiveSource(slice1)
        active = pvs.GetActiveSource()
        pvs.ShowInteractiveWidgets(slice1Display)

        server.controller.view_update()

I use VtkRemoteLocalView for showing stuff as follows:

            html_view = paraview.VtkRemoteLocalView(pvs.GetActiveViewOrCreate("RenderView"), namespace="view")
            server.controller.view_update = html_view.update
            server.controller.view_update_geometry = html_view.update_geometry
            server.controller.view_update_image = html_view.update_image
            server.controller.view_reset_camera = html_view.reset_camera

My problem is that in Paraview the handles of the slice tool are shown with no problem, meanwhile in Trame I can't see the handles of the slice.
Is there any workaround?
Thank you so much in advance.

[jourdain]

3D widgets are not exposed in ParaView from the Python API. The actual code for toggling those rely on the Qt layer and therefore is missing in pure python execution like trame. But this is something we are thinking of cleaning up in ParaView.

[Swai-Nima-Ghorab]

Thank you so much dear @jourdain.
Is there any other workaround to have Paraview tool handles and controllers in Trame Viewport?
Is there an example code showing it?
Thanks a lot.

[jourdain]

We can enable 3D widgets in trame but the code is not trivial and all the places I've done it are in commercial applications, so I can not provide any pointer for references. Sorry

[NimaGhorab]

Thanks a lot, dear @jourdain.
I managed to use vtkImplicitPlaneWidget2 to create and show a 3D widget in the Trame viewport.