ComfyUI/comfy_extras/nodes_logic.py

from typing_extensions import override
from comfy_api.latest import ComfyExtension, io



class SwitchNode(io.ComfyNode):
    @classmethod
    def define_schema(cls):
        template = io.MatchType.Template("switch")
        return io.Schema(
            node_id="ComfySwitchNode",
            display_name="Switch",
            category="logic",
            inputs=[
                io.Boolean.Input("switch"),
                io.MatchType.Input("on_false", template=template, lazy=True),
                io.MatchType.Input("on_true", template=template, lazy=True),
            ],
            outputs=[
                io.MatchType.Output("output", template=template, display_name="output"),
            ],
        )

    @classmethod
    def check_lazy_status(cls, switch, on_false=None, on_true=None):
        if switch and on_true is None:
            return ["on_true"]
        if not switch and on_false is None:
            return ["on_false"]

    @classmethod
    def execute(cls, switch, on_true, on_false) -> io.NodeOutput:
        return io.NodeOutput(on_true if switch else on_false)


class LogicExtension(ComfyExtension):
    @override
    async def get_node_list(self) -> list[type[io.ComfyNode]]:
        return [
            SwitchNode,
        ]

async def comfy_entrypoint() -> LogicExtension:
    return LogicExtension()