How to use the fury.window function in fury

from fury import window
from viz_shader_canvas import cube


import vtk


scene = window.Scene()
showm = window.ShowManager(scene, order_transparent=True)

canvas_actor = cube()
canvas_actor.GetProperty().BackfaceCullingOff()
scene.add(canvas_actor)
scene.background((1, 1, 1))
mapper = canvas_actor.GetMapper()

# Modify the vertex shader to pass the position of the vertex
mapper.AddShaderReplacement(
    vtk.vtkShader.Vertex,
    "//VTK::Normal::Dec",  # replace the normal block
    True,  # before the standard replacements
    """
    //VTK::Normal::Dec  // we still want the default
    out vec4 myVertexMC;

vertices=vertices, triangles=triangles, colors=primitive_colors,
    normals=normals, backface_culling=True)

##############################################################################
# We add all actors (visual objects) defined above to the scene.

scene.add(point_actor)
scene.add(arrow_actor)
scene.add(primitive_actor)
scene.add(actor.axes())

##############################################################################
# The ShowManager class is the interface between the scene, the window and the
# interactor.

showm = window.ShowManager(scene,
                           size=(900, 768), reset_camera=False,
                           order_transparent=True)

##############################################################################
# We want to make a small animation for fun!
# We can determine the duration of animation with using the ``counter``.
# Use itertools to avoid global variables.

counter = itertools.count()

##############################################################################
# The timer will call this user defined callback every 200 milliseconds. The
# application will exit after the callback has been called 20 times.


def timer_callback(_obj, _event):

element.set_visibility(True)
    if values.index(listbox.selected[0]) == 4:
        cube.SetVisibility(True)


listbox.on_change = display_element

###############################################################################
# Show Manager
# ==================================
#
# Now that all the elements have been initialised, we add them to the show
# manager.

current_size = (800, 800)
show_manager = window.ShowManager(size=current_size, title="DIPY UI Example")

show_manager.scene.add(listbox)
for example in examples:
    for element in example:
        show_manager.scene.add(element)
show_manager.scene.add(cube)
show_manager.scene.reset_camera()
show_manager.scene.set_camera(position=(0, 0, 200))
show_manager.scene.reset_clipping_range()
show_manager.scene.azimuth(30)

# To interact with the UI, set interactive = True
interactive = False

if interactive:
    show_manager.start()

def cube_maker(color=(1, 1, 1), size=(0.2, 0.2, 0.2), center=(0, 0, 0)):
    cube = window.vtk.vtkCubeSource()
    cube.SetXLength(size[0])
    cube.SetYLength(size[1])
    cube.SetZLength(size[2])
    if center is not None:
        cube.SetCenter(*center)
    cube_mapper = window.vtk.vtkPolyDataMapper()
    cube_mapper.SetInputConnection(cube.GetOutputPort())
    cube_actor = window.vtk.vtkActor()
    cube_actor.SetMapper(cube_mapper)
    if color is not None:
        cube_actor.GetProperty().SetColor(color)
    return cube_actor