packages.dart/deprecated/dynamic_tabs/lib/ui/more_screen.dart

import 'package:cupertino_controllers/cupertino_controllers.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';

import '../data/classes/tab.dart';
import '../data/models/index.dart';
import '../dynamic_tabs.dart';
import 'edit_screen.dart';

class MoreTab extends StatelessWidget {
  const MoreTab({
    this.adaptive = false,
    required this.primaryColor,
    required this.accentColor,
    required this.navigator,
  })  : breakpoint = null,
        masterDetail = false;

  const MoreTab.fluid({
    this.adaptive = false,
    required this.primaryColor,
    required this.accentColor,
    required this.navigator,
    this.breakpoint = 720,
  }) : masterDetail = true;

  final bool adaptive;
  final Color? primaryColor;
  final Color? accentColor;
  final NavigatorState navigator;
  final bool masterDetail;
  final double? breakpoint;

  @override
  Widget build(BuildContext context) {
    final media = MediaQuery.of(context);
    final _landscape = media.orientation == Orientation.landscape;
    return LayoutBuilder(
      builder: (context, constraints) {
        final _expanded = masterDetail && constraints.maxWidth >= breakpoint!;
        return Builder(
          builder: (context) {
            final model = TabProvider.of(context)!.state;
            if (adaptive && defaultTargetPlatform == TargetPlatform.iOS) {
              if (_landscape &&
                  masterDetail &&
                  constraints.maxWidth >= breakpoint!) {
                return Row(
                  children: <Widget>[
                    Container(
                      width: 350,
                      child: CupertinoPage(
                        primaryColor: primaryColor,
                        accentColor: accentColor,
                        expanded: _expanded,
                        onEdit: () => _goToEditScreen(context, model),
                        onTap: (index) {
                          final _index =
                              model.allTabs.indexOf(model.extraTabs[index]);
                          model.changeTab(_index);
                        },
                      ),
                    ),
                    Expanded(child: model.child),
                  ],
                );
              }
              return CupertinoPage(
                primaryColor: primaryColor,
                accentColor: accentColor,
                expanded: _expanded,
                onEdit: () => _goToEditScreen(context, model),
                onTap: (index) async {
                  final _index = model.allTabs.indexOf(model.extraTabs[index]);
                  model.changeTab(_index);
                  await navigator.push(
                    CupertinoPageRoute(
                      builder: (context) => model.child,
                    ),
                  );
                },
              );
            }

            if (_landscape &&
                masterDetail &&
                constraints.maxWidth >= breakpoint!) {
              return Row(
                children: <Widget>[
                  Container(
                    width: 350,
                    child: new MaterialPage(
                      primaryColor: primaryColor,
                      accentColor: accentColor,
                      expanded: _expanded,
                      onEdit: () => _goToEditScreen(context, model),
                      onTap: model.changeTab,
                    ),
                  ),
                  Expanded(child: model.child),
                ],
              );
            }
            return MaterialPage(
              primaryColor: primaryColor,
              accentColor: accentColor,
              expanded: _expanded,
              onEdit: () => _goToEditScreen(context, model),
              onTap: (index) async {
                final _index = model.allTabs.indexOf(model.extraTabs[index]);
                model.changeTab(_index);
                await navigator.push(
                  MaterialPageRoute(
                    builder: (context) {
                      return Material(child: model.child);
                    },
                  ),
                );
              },
            );
          },
        );
      },
    );
  }

  void _goToEditScreen(BuildContext context, TabState state) {
    Navigator.of(context, rootNavigator: true)
        .push<List<DynamicTab>>(MaterialPageRoute(
      builder: (context) => EditScreen(
        maxTabs: state.maxTabs,
        adaptive: adaptive,
        tabs: state.allTabs,
      ),
      fullscreenDialog: true,
    ))
        .then((newTabs) {
      if (newTabs != null) {
        final _list = newTabs.map((t) => t.tag).toList();
        state.changeTabOrder(_list);
      }
    });
  }
}

class MaterialPage extends StatelessWidget {
  const MaterialPage({
    Key? key,
    required this.primaryColor,
    required this.accentColor,
    required this.expanded,
    required this.onEdit,
    required this.onTap,
  }) : super(key: key);

  final bool expanded;
  final VoidCallback onEdit;
  final ValueChanged<int> onTap;
  final Color? primaryColor;
  final Color? accentColor;

  @override
  Widget build(BuildContext context) {
    return Builder(
      builder: (context) {
        final model = TabProvider.of(context)!.state;
        return Scaffold(
            appBar: AppBar(
              title: Text("More"),
              actions: <Widget>[
                IconButton(
                  icon: Icon(Icons.edit),
                  onPressed: onEdit,
                ),
              ],
            ),
            body: SafeArea(
              child: ListView.builder(
                padding: EdgeInsets.all(0.0),
                itemCount: model.extraTabs.length,
                itemBuilder: (BuildContext context, int index) {
                  final i = model.extraTabs[index];
                  return ListTile(
                    leading: i.tab.icon,
                    title: i.tab.label,
                    selected: expanded ? index == model.subIndex : false,
                    trailing:
                        !expanded ? Icon(Icons.keyboard_arrow_right) : null,
                    onTap: () => onTap(index),
                  );
                },
              ),
            ));
      },
    );
  }
}

class CupertinoPage extends StatelessWidget {
  const CupertinoPage({
    Key? key,
    required this.primaryColor,
    required this.accentColor,
    required this.onTap,
    required this.onEdit,
    required this.expanded,
  }) : super(key: key);

  final Color? primaryColor;
  final Color? accentColor;
  final ValueChanged<int> onTap;
  final VoidCallback onEdit;
  final bool expanded;

  @override
  Widget build(BuildContext context) {
    return Builder(
      builder: (context) {
        final model = TabProvider.of(context)!.state;
        return CupertinoPageScaffold(
          child: CustomScrollView(
            slivers: <Widget>[
              CupertinoSliverNavigationBar(
                backgroundColor: primaryColor,
                transitionBetweenRoutes: !expanded,
                heroTag: Key('more-tab'),
                largeTitle: Text("More"),
                trailing: CupertinoButton(
                  child: Text("Edit"),
                  padding: EdgeInsets.all(0.0),
                  onPressed: onEdit,
                ),
              ),
              SliverPadding(
                padding: MediaQuery.of(context)
                    .removePadding(
                      removeTop: true,
                      removeLeft: true,
                      removeRight: true,
                    )
                    .padding,
                sliver: SliverList(
                  delegate: SliverChildBuilderDelegate(
                    (BuildContext context, int index) {
                      final i = model.extraTabs[index];
                      final Icon _icon = i.tab.icon as Icon;
                      final Text _text = i.tab.label as Text;
                      return DefaultTextStyle(
                          style: CupertinoTheme.of(context).textTheme.textStyle,
                          child: CupertinoListTile(
                            leading: _icon.icon!,
                            title: _text,
                            selected:
                                expanded ? index == model.subIndex : false,
                            lastItem: false,
                            ios: CupertinoListTileData(
                              style: CupertinoCellStyle.subtitle,
                              accessory: expanded
                                  ? CupertinoAccessory.none
                                  : CupertinoAccessory.disclosureIndicator,
                            ),
                            onTap: () => onTap(index),
                          ));
                    },
                    childCount: model.extraTabs.length,
                  ),
                ),
              ),
            ],
          ),
        );
      },
    );
  }
}