zhiying_base_widget/lib/pages/search_page/search_page.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:zhiying_base_widget/pages/search_page/notifier/search_tag_notifier.dart';
import 'package:zhiying_base_widget/pages/search_think_page/bloc/search_think_bloc.dart';
import 'package:zhiying_base_widget/pages/search_think_page/bloc/search_think_repository.dart';
import 'package:zhiying_comm/zhiying_comm.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:provider/provider.dart';

import 'bloc/search_bloc.dart';
import 'bloc/search_repository.dart';

///
/// 搜索页
///
class SearchPage extends StatelessWidget {
  final Map<String, dynamic> data;

  SearchPage(this.data, {Key key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MultiProvider(
      providers: [
        ChangeNotifierProvider.value(value: SearchTagNotifier())
      ],
      child: MultiProvider(
        providers: [

          /// 搜索页面的bloc
          BlocProvider<SearchBloc>(
            create: (_) => SearchBloc(repository: SearchRepository())..add(SearchInitEvent(model: data)),
          ),

          /// 输入框联想的bloc
          BlocProvider<SearchThinkBloc>(
            create: (_)=> SearchThinkBloc(SearchThinkRepository()),
          ),

        ],
        child: SearchPageContianer(),
      ),
      // child: BlocProvider<SearchBloc>(
      //   create: (_) => SearchBloc(repository: SearchRepository())..add(SearchInitEvent(model: data)),
      //   child: SearchPageContianer(),
      // ),
    );
  }
}

class SearchPageContianer extends StatefulWidget {
  @override
  _SearchPageContianerState createState() => _SearchPageContianerState();
}

class _SearchPageContianerState extends State<SearchPageContianer> {
  /// tab轮播
  TabController _tabController;

  @override
  void initState() {
    _tabController = TabController(length: 6, vsync: ScrollableState());
    super.initState();
  }

  @override
  void dispose() {
    _tabController?.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return MediaQuery.removePadding(
      removeTop: true,
      context: context,
      child: Container(
        width: double.infinity,
        child: BlocConsumer<SearchBloc, SearchState>(
          listener: (BuildContext context, SearchState state) {
            if (state is SearchErrorState) {
              print('数据加载出错');
            }
          },
          buildWhen: (previous, current) {
            /// 数据加载出错不进行build
            if (current is SearchErrorState) {
              return false;
            }

            /// 搜索成功，跳转结果页面
            if (current is SearchSubmitSuccessState) {
              return false;
            }

            /// 搜索失败，不进行build
            if (current is SearchSubmitErrorState) {
              return false;
            }

            return true;
          },
          builder: (context, state) {
            print('currente state = $state');
            if (state is SearchLoadedState) {
              return _getMainWidget(state?.model);
            }

            /// 骨架屏幕
            return _getMainWidget(null);
          },
        ),
      ),
    );
  }

  /// 主视图
  Widget _getMainWidget(List<Map<String, dynamic>> datas) {
    return AnnotatedRegion<SystemUiOverlayStyle>(
      value: SystemUiOverlayStyle.dark,
      child: Scaffold(
        backgroundColor: Colors.white,
        body: Listener(
          onPointerDown: (down) => RouterUtil.hideKeyboard(context),
          child: Column(
            children: _createContentWidget(datas),
          ),
        ),
      ),
    );
  }

  List<Widget> _createContentWidget(List<Map<String, dynamic>> datas) {
    List<Widget> list = [];
    int length = datas?.length ?? 0;
    if (length <= 0) {
      /// 骨架屏幕？
      list.add(Container(
        height: 200,
        width: double.infinity,
        color: Colors.white,
        // child: Center(
        //   child: Text('暂时无数据哦~'),
        // ),
      ));
    } else {
      for (int i = 0; i < datas.length; i++) {
        WidgetModel item = WidgetModel.fromJson(Map<String, dynamic>.from(datas[i]));
        print('item.modName ${item.modName}');
        list.addAll(WidgetFactory.create(
          item.modName,
          isSliver: false,
          model: datas[i],
        ));
      }
    }
    return list;
  }

  // List<Widget> _createContent(BuildContext context, List<Map<String, dynamic>> datas) {
  //   List<Widget> list = List();
  //
  //   int length = datas?.length ?? 0;
  //
  //   if (length <= 0) {
  //     list.add(SliverToBoxAdapter(
  //       child: Container(
  //         height: 200,
  //         child: Center(
  //           child: Text('暂时无数据哦~'),
  //         ),
  //       ),
  //     ));
  //     return list;
  //   }
  //
  //   for (int i = 0; i < 3; i++) {
  //     WidgetModel item = WidgetModel.fromJson(Map<String, dynamic>.from(datas[i]));
  //     print('item.modName ${item.modName}');
  //     list.addAll(WidgetFactory.create(
  //       item.modName,
  //       isSliver: true,
  //       model: datas[i],
  //     ));
  //   }
  //
  //   return list;
  // }
}