node_Float2.py

import bpy
from node_s import *
from util import *
from bpy.props import FloatProperty

class SvFloatOp(bpy.types.Operator):

    bl_idname = "node.float_config"
    bl_label = "Sverchok floatnode op"
    bl_options = {'REGISTER', 'UNDO'}

    def execute(self, context):
        n = context.node
        n.rna_type.float_[1]['hard_max'] = n.hard_max
        n.rna_type.float_[1]['hard_min'] = n.hard_min
        n.rna_type.float_[1]['soft_max'] = n.soft_max
        n.rna_type.float_[1]['soft_min'] = n.soft_min
        return {'FINISHED'}

class FloatNode2(Node, SverchCustomTreeNode):
    ''' Float2 '''
    bl_idname = 'FloatNode2'
    bl_label = 'Float2'
    bl_icon = 'OUTLINER_OB_EMPTY'
    
    float_ = FloatProperty(
        name='float_', 
        description='float number', 
        default=1.0, options={'ANIMATABLE'}, 
        update=updateNode)

    hard_max = FloatProperty(name='hard_max', default=10.0)
    hard_min = FloatProperty(name='hard_min', default=-10.0)
    soft_max = FloatProperty(name='soft_max', default=1.0)
    soft_min = FloatProperty(name='soft_min', default=-1.0)
    
    def init(self, context):
        # self.inputs.new('StringsSocket', "Float", "Float").prop_name = 'float_'
        self.outputs.new('StringsSocket', "Float", "Float").prop_name = 'float_'
    
    def draw_buttons(self, context, layout):
        layout.prop(self, "float_", text="float")

    def draw_buttons_ext(self, context, layout):
        row = layout.row(align=True)
        row.label('slider limits')

        for propname in ['hard_max', 'hard_min', 'soft_max', 'soft_min']:
            row = layout.row(align=True)
            row.prop(self, propname, text=propname)
        
        row = layout.row(align=True)
        row.operator('node.float_config', text='set these')

    def update(self):
        # need input? make a throughput node instead? 'identity node'

        # if 'Float' in self.inputs and self.inputs['Float'].links:
        #     tmp = SvGetSocketAnyType(self,self.inputs['Float'])
        #     Float = tmp[0][0]
        # else:
        #     Float = self.float_

        if 'Float' in self.outputs and self.outputs['Float'].links:
            SvSetSocketAnyType(self,'Float',[[self.float_]])
    
    def update_socket(self, context):
        self.update()

def register():
    bpy.utils.register_class(FloatNode2)
    bpy.utils.register_class(SvFloatOp)
    
def unregister():
    bpy.utils.unregister_class(SvFloatOp)
    bpy.utils.unregister_class(FloatNode2)

if __name__ == "__main__":
    register()