1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:kulinar_app/constants.dart';
import 'package:kulinar_app/widgets/error_widgets.dart';
import 'package:kulinar_app/widgets/toastbar_widget.dart';
import 'package:kulinar_app/widgets/custom_drawer_widget.dart';
import 'package:kulinar_app/models/data/shoplist_data_class.dart';
import 'package:flutter_gen/gen_l10n/app_localizations.dart';
class ShoplistView extends StatefulWidget {
const ShoplistView({Key? key}) : super(key: key);
@override
ShoplistViewState createState() => ShoplistViewState();
}
class ShoplistViewState extends State<ShoplistView> {
final FocusNode _focusNode = FocusNode();
final TextEditingController _controller = TextEditingController();
final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
final GlobalKey<AnimatedListState> _listKey = GlobalKey<AnimatedListState>();
PersistentBottomSheetController? _bottomSheetController;
bool _open = false;
@override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
appBar: AppBar(title: Text(AppLocalizations.of(context)!.category7)),
drawer: const CustomDrawer(initialIndex: 4),
floatingActionButton: _buildFloatingActionButton(),
body: _buildAnimatedList(),
);
}
Widget _buildFloatingActionButton() {
return FloatingActionButton(
child: Icon(_open ? Icons.remove_rounded : Icons.add_rounded, color: cIconColor),
onPressed: () {
if (_open) {
_closeInput();
} else {
_bottomSheetController = _scaffoldKey.currentState!.showBottomSheet((context) => _buildBottomSheetInput());
_open = !_open;
setState(() {});
}
},
);
}
// TODO: FIXME: Sometimes exception "cant call insertItem of null" is thrown when first item is added or last is removed
Widget _buildAnimatedList() {
if (ShoplistData.shoplist.isEmpty) return const NoContentError();
return AnimatedList(
key: _listKey,
initialItemCount: ShoplistData.shoplist.length,
itemBuilder: (BuildContext context, int index, Animation<double> animation) {
return SlideTransition(
position: animation.drive(Tween(begin: const Offset(1.0, 0.0), end: const Offset(0.0, 0.0))),
child: Dismissible(
key: Key(_getUniqueKeyString(ShoplistData.shoplist[index])),
background: _buildDimissibleBackground(true),
secondaryBackground: _buildDimissibleBackground(false),
child: ListTile(
title: Text(ShoplistData.shoplist[index]),
),
onDismissed: (_) {
String _content = AppLocalizations.of(context)!.removed;
String _actionLabel = AppLocalizations.of(context)!.undo;
_removeItem(index);
ToastBar.showToastBar(context, _content, actionLabel: _actionLabel, actionCallback: () => _addItem(ShoplistData.removed.removeLast()));
},
),
);
},
);
}
Widget _buildDimissibleBackground(bool left) {
return Container(
color: cPrimaryColor,
/*
child: Row(
mainAxisAlignment: left ? MainAxisAlignment.start : MainAxisAlignment.end,
children: [
Padding(
padding: const EdgeInsets.all(8.0),
child: Icon(
Icons.delete_rounded,
color: cIconColor,
),
),
],
),
*/
);
}
Widget _buildBottomSheetInput() {
_focusNode.requestFocus();
return WillPopScope(
child: Container(
height: 75.0,
color: cPrimaryColor,
child: Padding(
padding: const EdgeInsets.all(15.0),
child: TextFormField(
controller: _controller,
style: cRecipeTitleStyle.copyWith(color: cIconColor),
cursorColor: cIconColor,
focusNode: _focusNode,
textInputAction: TextInputAction.done,
onEditingComplete: () {
String _text = _controller.text.trim();
_closeInput();
_controller.clear();
if (_text != "") _addItem(_text);
},
),
),
),
onWillPop: () async {
return false;
},
);
}
String _getUniqueKeyString(String item) {
return base64Encode(utf8.encode(item));
}
void _removeItem(int index) {
_listKey.currentState!.removeItem(index, (_, __) => Container());
ShoplistData.removed.add(ShoplistData.shoplist.removeAt(index));
ShoplistData.save();
setState(() {});
}
void _addItem(String string) {
ShoplistData.shoplist.add(string);
if (ShoplistData.shoplist.length > 1) _listKey.currentState!.insertItem(ShoplistData.shoplist.indexOf(string));
ShoplistData.save();
setState(() {});
}
void _closeInput() {
_bottomSheetController!.close();
_focusNode.unfocus();
_open = !_open;
setState(() {});
}
}
|
