from nicegui import ui


def main_demo() -> None:
    grid = ui.aggrid({
        'columnDefs': [
            {'headerName': 'Name', 'field': 'name'},
            {'headerName': 'Age', 'field': 'age'},
        ],
        'rowData': [
            {'name': 'Alice', 'age': 18},
            {'name': 'Bob', 'age': 21},
            {'name': 'Carol', 'age': 42},
        ],
        'rowSelection': 'multiple',
    }).classes('max-h-40')

    def update():
        grid.options['rowData'][0]['age'] += 1
        grid.update()

    ui.button('Update', on_click=update)
    ui.button('Select all', on_click=lambda: grid.call_api_method('selectAll'))