[Question] ListView add PopupMenuBtton lag

[chenjijun]

Question

User ListView add 200+ ListTile ,ListTile trailing use popupMenuButton, PopupMenuItem bind func(page.show_dialog(ft.Snackbar(ft.text())) ,when click PopupMenuItem ,it will lag 5 seconds then show the dialog
macos 26 flet 0.80.1

Code sample

import flet as ft

class ListView(ft.Container):
    def __init__(self, items: list,ref=None,func=None) -> None:
        super().__init__()
        self.items = items or []
        # self.devices = [ft.Text(item[0]) for item in items]
        self.expand = True
        
        self.border = ft.Border.all(1, ft.Colors.GREY_300)
        self.border_radius = 10


        self.pop_menu = ft.PopupMenuButton(
                            items=[
                                ft.PopupMenuItem(content="Sm",on_click=self.show),
                                ft.PopupMenuItem(content="Med"),
                                ft.PopupMenuItem(content="Lg"),
                            ],)

        self.list_view =  ft.ListView(

            ref=ref,
            expand=True,
            
            controls=[
                ft.ListTile(
                    title=item[0],
                    subtitle=item[1],
                    leading=ft.Icon(ft.Icons.DEVICE_HUB),
                    trailing=self.pop_menu ,
                    on_click=lambda e: self.page.show_dialog(ft.AlertDialog(
                        title=ft.Text("Item Clicked"),
                        content=ft.Text(f"You clicked on {e.control.title}"),
                        on_dismiss=lambda e: self.page.pop_dialog(),
                        actions=[
                            ft.TextButton("OK", on_click=lambda : self.delete_item(e.control))
                                          ]
                            )
                ))
                
                for item in self.items
            ]
        )
        self.content = self.list_view

    def delete_item(self, item):
        self.list_view.controls.remove(item)
        self.page.pop_dialog()

    def show(self,e):
        print(e.control.parent.parent.title)
        self.page.show_dialog(ft.SnackBar(ft.Text(e.control.parent.parent.title)))

Error message

No response

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• I have searched for answers to my question both in the issues and in previous discussions.

[FeodorFitsner]

Why closed?

[chenjijun]

my code is error, i user lambda inside ft.PopupMenuItem(content="Sm",on_click=self.show) To
ft.PopupMenuItem(
"Sm",
on_click=lambda e, t=tile: self.show(t),
)

it looks work good

[chenjijun]

another lag:
in this Alert code ,if self.clear_result not a async func, the dialog close very slow .

self.clear_alert = ft.AlertDialog(
                title=ft.Text("Info"),
                content=ft.Text("Sure Clear All results?"),
                actions=[
                    ft.TextButton("Quit", on_click=lambda e: self.page.pop_dialog()),
                    ft.TextButton("Enter", on_click=self.clear_result),
                ],
            )
def clear_result(self):
        self.page.pop_dialog() 
        self.result_table.rows.clear()
        self.result_table.update()

Change to user async and add await asyncio.sleep(0.1) , the dialog close fast

async def clear_result(self):
        self.page.pop_dialog() 
        self.result_table.rows.clear()
        self.result_table.update()
        await asyncio.sleep(0.1)

[chenjijun]

i try to use ft.context.disable_auto_update() ,it very helpful