147 lines
3.8 KiB
Dart
147 lines
3.8 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:get/get.dart';
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import 'package:loopin/IM/im_friend_listeners.dart';
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import 'package:loopin/api/shop_api.dart';
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import 'package:loopin/service/http.dart';
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/// 单个 Tab 的状态
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class TabState {
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final ScrollController scrollController;
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final RxInt currentPage;
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final RxDouble scrollOffset;
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final RxList dataList;
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final RxBool isLoading;
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final RxBool hasLoaded;
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TabState({
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required this.scrollController,
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required this.currentPage,
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required this.scrollOffset,
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required this.dataList,
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required this.isLoading,
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required this.hasLoaded,
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});
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}
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class ShopIndexController extends GetxController with GetSingleTickerProviderStateMixin {
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TabController? tabController;
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///轮播图数据
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RxList<dynamic> swiperData = <dynamic>[].obs;
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/// tab 分类列表
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RxList<dynamic> tabList = <dynamic>[].obs;
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/// 每个 tab 对应的状态
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final Map<int, TabState> tabs = {};
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/// 当前 tab index
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RxInt currentTabIndex = 0.obs;
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/// 初始化 Tab 分类
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void initTabs({required TickerProvider vsync}) async {
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// 释放旧的 ScrollController
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tabs.forEach((_, state) => state.scrollController.dispose());
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tabs.clear();
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tabList.clear();
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// 先释放旧 TabController（并移除监听）
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tabController?.removeListener(_tabListener);
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tabController?.dispose();
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// 赋值 tab 数据
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final res = await Http.post(ShopApi.shopCategory, data: {
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'level': 1,
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});
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final data = res['data'] as List<dynamic>;
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// logger.w(data);
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tabList.addAll(data);
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// 初始化每个 tab 的状态
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for (int i = 0; i < tabList.length; i++) {
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final controller = ScrollController();
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tabs[i] = TabState(
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scrollController: controller,
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currentPage: 1.obs,
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scrollOffset: 0.0.obs,
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dataList: <dynamic>[].obs,
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isLoading: false.obs,
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hasLoaded: false.obs,
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);
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}
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// 创建新的 TabController
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tabController = TabController(length: tabList.length, vsync: vsync);
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tabController?.addListener(_tabListener);
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// 初始化第一个 tab 的数据
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if (tabList.isNotEmpty) {
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loadSwiperData();
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loadData(0);
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}
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}
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/// Tab 切换监听
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void _tabListener() {
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if (!tabController!.indexIsChanging) {
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currentTabIndex.value = tabController!.index;
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final tab = tabs[currentTabIndex.value];
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if (tab != null && !tab.hasLoaded.value) {
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loadData(currentTabIndex.value);
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}
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}
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}
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Future<void> refreshData(int index) async {
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await loadSwiperData();
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final tab = tabs[index];
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if (tab == null) return;
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tab.currentPage.value = 1;
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tab.dataList.clear();
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tab.isLoading.value = false;
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tab.hasLoaded.value = false;
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await loadData(index);
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}
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/// 加载pageview数据
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Future<void> loadData(int index) async {
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final tab = tabs[index];
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if (tab == null || tab.isLoading.value) return;
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tab.isLoading.value = true;
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final res = await Http.post(ShopApi.shopList, data: {
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'size': 10,
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'current': tab.currentPage.value,
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'categoryId': tabList[index]['id'],
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});
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final data = res['data']['records'];
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logger.w('商品返回数据:$index------------------------->$data');
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tab.dataList.addAll(data);
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// logger.w(res);
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tab.currentPage.value += 1;
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tab.isLoading.value = false;
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tab.hasLoaded.value = true;
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}
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/// 加载swiper数据
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Future<void> loadSwiperData() async {
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final res = await Http.post(ShopApi.shopSwiperList, data: {
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'type': 1,
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});
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final data = res['data'];
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logger.w(res);
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swiperData.assignAll(data);
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}
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@override
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void onClose() {
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tabController?.removeListener(_tabListener);
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tabs.forEach((_, state) => state.scrollController.dispose());
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super.onClose();
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}
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}
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