# -*- coding: utf-8 -*-
"""Helper class needed for the stevedore integration. Needs to provide
a description() method that returns a dict containing a description of
this node, and a factory() method for creating the graphical and non-graphical
nodes."""
import from_smiles_step
[docs]
class FromSMILESStep(object):
my_description = {
"description": "Creates a 3D molecular structure from a SMILES string.",
"group": "Building",
"name": "from SMILES",
}
def __init__(self, flowchart=None, gui=None):
"""Initialize this helper class, which is used by
the application via stevedore to get information about
and create node objects for the flowchart
"""
pass
[docs]
def description(self):
"""Return a description of what this extension does"""
return FromSMILESStep.my_description
[docs]
def create_node(self, flowchart=None, **kwargs):
"""Return a new node object"""
return from_smiles_step.FromSMILES(flowchart=flowchart, **kwargs)
[docs]
def create_tk_node(self, canvas=None, **kwargs):
"""Return the graphical Tk node object"""
return from_smiles_step.TkFromSMILES(canvas=canvas, **kwargs)