PiliPlus/lib/pages/rank/view.dart

import 'dart:async';
import 'package:PiliPalaX/common/constants.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:get/get.dart';
import '../../utils/feed_back.dart';
import './controller.dart';

class RankPage extends StatefulWidget {
  const RankPage({Key? key}) : super(key: key);

  @override
  State<RankPage> createState() => _RankPageState();
}

class _RankPageState extends State<RankPage>
    with AutomaticKeepAliveClientMixin, TickerProviderStateMixin {
  final RankController _rankController = Get.put(RankController());
  late int _selectedTabIndex = 0;

  @override
  bool get wantKeepAlive => true;

  @override
  void initState() {
    super.initState();
    _rankController.tabController =
        TabController(vsync: this, length: _rankController.tabs.length);
    _selectedTabIndex = _rankController.initialIndex.value;
    _rankController.tabController.addListener(() {
      print("_rankController.tabController.index");
      print(_rankController.tabController.index);
      if (!_rankController.tabController.indexIsChanging) {
        // _rankController.onRefresh();
        setState(() {
          _selectedTabIndex = _rankController.tabController.index;
        });
      }
    });
  }
  @override
  void dispose() {
    _rankController.tabController.removeListener(() {});
    _rankController.tabController.dispose();
    super.dispose();
  }
  @override
  Widget build(BuildContext context) {
    super.build(context);

    return Scaffold(
      appBar: AppBar(
        toolbarHeight: 0,
        elevation: 0,
        systemOverlayStyle: SystemUiOverlayStyle(
          // Customize the status bar here
          statusBarIconBrightness:
              MediaQuery.of(context).platformBrightness == Brightness.dark
                  ? Brightness.light
                  : Brightness.dark,
        ),
      ),
      body: Row(
        children: [
          const SizedBox(
            width: StyleString.cardSpace,
          ),
          LayoutBuilder(builder: (context, constraint) {
            return SingleChildScrollView(
                child: ConstrainedBox(
                    constraints:
                        BoxConstraints(minHeight: constraint.maxHeight + 100),
                    child: IntrinsicHeight(
                        child: NavigationRail(
                      minWidth: 55.0,
                      selectedIndex: _selectedTabIndex,
                      onDestinationSelected: (int index) {
                        feedBack();
                        if (_selectedTabIndex == index) {
                          _rankController.tabsCtrList[index]().animateToTop();
                        } else {
                          setState(() {
                            _rankController.tabController.index = index;
                            _selectedTabIndex = index;
                          });
                        }
                      },
                      labelType: NavigationRailLabelType.none,
                      destinations: [
                        for (var tab in _rankController.tabs)
                          NavigationRailDestination(
                            icon: Text(tab['label']),
                            // selectedIcon: Text(tab['label']),
                            label: const SizedBox.shrink(),
                          ),
                      ],
                    ))));
          }),
          Expanded(
            child: TabBarView(
              controller: _rankController.tabController,
              children: _rankController.tabsPageList,
            ),
          ),
        ],
      ),
    );
  }
}