Universal Connector

universal_connector.py

# ##### BEGIN GPL LICENSE BLOCK #####
#
#  This program is free software; you can redistribute it and/or
#  modify it under the terms of the GNU General Public License
#  as published by the Free Software Foundation; either version 2
#  of the License, or (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software Foundation,
#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####

import bpy
from sverchok.node_tree import SverchCustomTreeNode
from sverchok.data_structure import updateNode

# this function will be located in the sv_obj_helper.py when it is merged
def enum_from_list_idx(*item_list):
    results = []
    for item in item_list:
        idx, item_name = item.split(':')
        results.append((item_name, item_name, "", int(idx)))
    return results


sockets = [
    "1:StringsSocket", "2:VerticesSocket", # "3:SvQuaternionSocket",
    "4:SvColorSocket", "5:MatrixSocket",
    # "6:SvDummySocket",
    "7:ObjectSocket",
    "9:SvObjectSocket"
    # "8:SvTextSocket",
]

socket_types = enum_from_list_idx(*sockets)

class SvUniversalConnector(bpy.types.Node, SverchCustomTreeNode):
    ''' Universal connector '''
    bl_idname = 'SvUniversalConnector'
    bl_label = 'Universal Connector'
    bl_icon = 'PLUGIN'

    def wrapped_process(self, context):
        self.outputs[0].replace_socket(self.selected_socket)
        self.process_node(context)

    
    selected_socket = bpy.props.EnumProperty(
        name="Select Socket",
        items=socket_types, description="offers....", update=wrapped_process
    )

    def sv_init(self, context):
        self.inputs.new('SvDummySocket', 'input')
        self.outputs.new('SvDummySocket', 'output')

    def draw_buttons(self, context, layout):
        layout.prop(self, "selected_socket", text='', icon='PLUGIN')

    def process(self):
        in_sock = self.inputs[0]
        out_sock = self.outputs[0]

        if in_sock.is_linked:
            if (in_sock.bl_idname != in_sock.other.bl_idname):
                in_sock.replace_socket(in_sock.other.bl_idname)
        
            out_sock.sv_set(in_sock.sv_get())


def register():
    bpy.utils.register_class(SvUniversalConnector)


def unregister():
    bpy.utils.unregister_class(SvUniversalConnector)