/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

declare interface VisibleListContentInfo {
    index: number
    itemIndexInGroup?: number
}

declare type OnScrollVisibleContentChangeCallback = (start: VisibleListContentInfo, end: VisibleListContentInfo) => void;
declare type Optional<T> = T | undefined

declare interface ListInterface { 
    (): ListAttribute
}

declare class ListAttribute extends ScrollableCommonMethod<ListAttribute> {
    someOptional(param: Optional<boolean>): ListAttribute

    //~onScrollVisibleContentChange(handler: OnScrollVisibleContentChangeCallback): ListAttribute;
}

declare const List: ListInterface