dde_gesture_manager/app/lib/pages/local_manager.dart

import 'package:dde_gesture_manager/constants/constants.dart';
import 'package:dde_gesture_manager/extensions.dart';
import 'package:dde_gesture_manager/models/content_layout.provider.dart';
import 'package:dde_gesture_manager/models/local_schemes_provider.dart';
import 'package:dde_gesture_manager/models/scheme.provider.dart';
import 'package:dde_gesture_manager/widgets/dde_button.dart';
import 'package:flutter/animation.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/painting.dart';

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

  @override
  State<LocalManager> createState() => _LocalManagerState();
}

class _LocalManagerState extends State<LocalManager> {
  late ScrollController _scrollController;
  int? _hoveringIndex;
  int? _selectedIndex;

  @override
  void initState() {
    super.initState();
    _scrollController = ScrollController();
  }

  Color _getItemBackgroundColor(int index) {
    Color _color = index % 2 == 0 ? context.t.scaffoldBackgroundColor : context.t.backgroundColor;
    if (index == _hoveringIndex) _color = context.t.scaffoldBackgroundColor;
    if (index == _selectedIndex) _color = Colors.blueAccent;
    return _color;
  }

  @override
  Widget build(BuildContext context) {
    var isOpen = context.watch<ContentLayoutProvider>().localManagerOpened == true;
    var localschemes = context.watch<LocalSchemesProvider>().schemes ?? [];
    return AnimatedContainer(
      duration: mediumDuration,
      curve: Curves.easeInOut,
      width: isOpen ? localManagerPanelWidth : 0,
      child: OverflowBox(
        alignment: Alignment.centerRight,
        maxWidth: localManagerPanelWidth,
        minWidth: localManagerPanelWidth,
        child: Material(
          color: context.t.backgroundColor,
          elevation: isOpen ? 10 : 0,
          child: Padding(
            padding: const EdgeInsets.all(8.0),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.start,
              children: [
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    Container(width: defaultButtonHeight),
                    Flexible(
                      child: Center(
                        child: Text(
                          LocaleKeys.local_manager_title,
                          textAlign: TextAlign.center,
                          style: TextStyle(
                            fontWeight: FontWeight.bold,
                          ),
                        ).tr(),
                      ),
                    ),
                    DButton(
                      width: defaultButtonHeight - 2,
                      height: defaultButtonHeight - 2,
                      onTap: () => context.read<ContentLayoutProvider>().setProps(localManagerOpened: !isOpen),
                      child: Icon(
                        CupertinoIcons.chevron_left_2,
                        size: 20,
                      ),
                    ),
                  ],
                ),
                Flexible(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: [
                      Flexible(
                        child: ListView.builder(
                          controller: _scrollController,
                          itemBuilder: (context, index) => GestureDetector(
                            onDoubleTap: () {
                              context.read<SchemeProvider>().copyFrom(localschemes[index].scheme);
                              setState(() {
                                _selectedIndex = index;
                              });
                            },
                            onTap: () {
                              setState(() {
                                _selectedIndex = index;
                              });
                            },
                            child: MouseRegion(
                              cursor: SystemMouseCursors.click,
                              onEnter: (_) {
                                setState(() {
                                  _hoveringIndex = index;
                                });
                              },
                              child: Container(
                                color: _getItemBackgroundColor(index),
                                child: Padding(
                                  padding: const EdgeInsets.only(right: 12.0),
                                  child: Row(
                                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                                    children: [
                                      Text(localschemes[index].scheme.name ?? ''),
                                      Text('456'),
                                    ],
                                  ),
                                ),
                              ),
                            ),
                          ),
                          itemCount: localschemes.length,
                        ),
                      ),
                      Container(
                        height: 150,
                        color: Colors.black,
                      ),
                    ],
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}