import flet as ft

def main(page: ft.Page):
    def close_dialog(e):
        dialog.open = False
        page.update()
    
    def open_dialog(e):
        dialog.open = True
        page.update()
    
    dialog = ft.AlertDialog(
        title=ft.Text("Session expired"),
        content=ft.Text("Please sign in again to continue."),
        actions=[
            ft.TextButton("Cancel", on_click=close_dialog),
            ft.TextButton("Sign in", on_click=close_dialog),
        ],
    )
    
    page.overlay.append(dialog)
    
    page.add(
        ft.ElevatedButton("Show Dialog", on_click=open_dialog)
    )

ft.app(target=main)

import flet as ft

def main(page: ft.Page):
    def delete_file(e):
        print("File deleted")
        warning_dialog.open = False
        page.update()
    
    def cancel_delete(e):
        warning_dialog.open = False
        page.update()
    
    def show_warning(e):
        warning_dialog.open = True
        page.update()
    
    warning_dialog = ft.AlertDialog(
        modal=True,
        icon=ft.Icon(ft.Icons.WARNING_AMBER_ROUNDED, size=50, color=ft.Colors.AMBER),
        title=ft.Text("Delete File?"),
        content=ft.Column([
            ft.Text("This action cannot be undone."),
            ft.Text("Are you sure you want to delete this file?"),
        ], tight=True, spacing=5),
        actions=[
            ft.TextButton("Cancel", on_click=cancel_delete),
            ft.FilledButton(
                "Delete",
                on_click=delete_file,
                style=ft.ButtonStyle(
                    bgcolor=ft.Colors.RED,
                    color=ft.Colors.WHITE
                )
            ),
        ],
        actions_alignment=ft.MainAxisAlignment.END,
        bgcolor=ft.Colors.SURFACE_VARIANT,
        shape=ft.RoundedRectangleBorder(radius=10),
    )
    
    page.overlay.append(warning_dialog)
    
    page.add(
        ft.ElevatedButton("Delete File", on_click=show_warning)
    )

ft.app(target=main)

import flet as ft

def main(page: ft.Page):
    def close_modal(e):
        modal_dialog.open = False
        page.update()
    
    def open_modal(e):
        modal_dialog.open = True
        page.update()
    
    modal_dialog = ft.AlertDialog(
        modal=True,  # User must interact with dialog
        title=ft.Text("Terms and Conditions"),
        content=ft.Text(
            "By clicking 'Agree', you accept our terms and conditions. "
            "This is a modal dialog, so you must make a choice."
        ),
        actions=[
            ft.TextButton("Disagree", on_click=close_modal),
            ft.FilledButton("Agree", on_click=close_modal),
        ],
    )
    
    page.overlay.append(modal_dialog)
    
    page.add(
        ft.ElevatedButton("Show Terms", on_click=open_modal)
    )

ft.app(target=main)