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import asyncio
from trame.app import get_server
from trame.decorators import TrameApp, controller
from trame.ui.html import DivLayout
from trame.widgets import trame
def toggle_node(node, node_id):
if node.get("id") == node_id:
new_visible = (node.get("visible") + 1) % 2
return {**node, "visible": new_visible}
return node
@TrameApp()
class App:
def __init__(self, server=None):
self.server = get_server(server, client_type="vue3")
self.ui = self._build_ui()
@property
def state(self):
return self.server.state
def toggle_visibility(self, node_id):
with self.state:
self.state.pipeline = [toggle_node(n, node_id) for n in self.state.pipeline]
@controller.add_task("on_server_ready")
async def auto_toggle(self, **kwargs):
while True:
for node_id in ["1", "2"]:
await asyncio.sleep(0.1)
self.toggle_visibility(node_id)
def _build_ui(self):
with DivLayout(self.server):
trame.GitTree(
sources=(
"pipeline",
[
{"id": "1", "parent": "0", "visible": 1, "name": "Mesh"},
{"id": "2", "parent": "1", "visible": 1, "name": "Contour"},
],
),
)
if __name__ == "__main__":
app = App()
app.server.start()
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