From d282f4bb380ce9c445d6bd3a4c9f001bb6b5f501 Mon Sep 17 00:00:00 2001
From: davidpkj <davidpenkow1@gmail.com>
Date: Sun, 17 Jul 2022 19:25:26 +0200
Subject: Initial Commit

---
 lib/views/shoplist_view.dart | 167 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 167 insertions(+)
 create mode 100644 lib/views/shoplist_view.dart

(limited to 'lib/views/shoplist_view.dart')

diff --git a/lib/views/shoplist_view.dart b/lib/views/shoplist_view.dart
new file mode 100644
index 0000000..a9caed8
--- /dev/null
+++ b/lib/views/shoplist_view.dart
@@ -0,0 +1,167 @@
+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
+  _ShoplistView createState() => _ShoplistView();
+}
+
+class _ShoplistView 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: CustomDrawer(initalIndex: 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.length == 0) return NoContentError();
+
+    return AnimatedList(
+      key: _listKey,
+      initialItemCount: ShoplistData.shoplist.length,
+      itemBuilder: (BuildContext context, int index, Animation<double> animation) {
+        return SlideTransition(
+          position: animation.drive(Tween(begin: Offset(1.0, 0.0), end: 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: cRecipeTextStyle.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(() {});
+  }
+}
-- 
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