Initial commit

lib/src/widget/smart_selector.dart

@@ -0,0 +1,111 @@
+import 'package:fluent_ui/fluent_ui.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class SmartSelector extends StatefulWidget {
+  final String keyName;
+  final String? label;
+  final String placeholder;
+  final List<String> options;
+  final SmartSelectorItem Function(String)? itemBuilder;
+  final Function(String)? onSelected;
+  final bool serializer;
+  final String? initialValue;
+  final bool enabled;
+  final bool useFirstItemByDefault;
+
+  const SmartSelector({Key? key,
+    required this.keyName,
+    required this.placeholder,
+    required this.options,
+    required this.initialValue,
+    this.itemBuilder,
+    this.onSelected,
+    this.label,
+    this.serializer = true,
+    this.enabled = true,
+    this.useFirstItemByDefault = true})
+      : super(key: key);
+
+  @override
+  State<SmartSelector> createState() => _SmartSelectorState();
+}
+
+class _SmartSelectorState extends State<SmartSelector> {
+  String? _selected;
+
+  @override
+  void initState() {
+    _selected = widget.initialValue;
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return widget.label == null ? _buildBody() : _buildLabel();
+  }
+
+  InfoLabel _buildLabel() {
+    return InfoLabel(label: widget.label!, child: _buildBody());
+  }
+
+  SizedBox _buildBody() {
+    return SizedBox(
+      width: double.infinity,
+      child: DropDownButton(
+        leading: Text(_selected ?? widget.placeholder),
+        items: widget.options.map(_createOption).toList()
+      ),
+    );
+  }
+
+  MenuFlyoutItem _createOption(String option) {
+    var function = widget.itemBuilder ?? _createDefaultItem;
+    var item = function(option);
+    return MenuFlyoutItem(
+        key: item.key,
+        text: item.text,
+        onPressed: () => widget.enabled && item.clickable ? _onSelected(option) : {},
+        leading: item.leading,
+        trailing: item.trailing,
+        selected: item.selected
+    );
+  }
+
+  SmartSelectorItem _createDefaultItem(String name) {
+    return SmartSelectorItem(
+        text: SizedBox(width: double.infinity, child: Text(name)));
+  }
+
+  void _onSelected(String name) {
+    setState(() {
+      widget.onSelected?.call(name);
+      _selected = name;
+      if(!widget.serializer){
+        return;
+      }
+
+      _serialize(name);
+    });
+  }
+
+  Future<void> _serialize(String value) async {
+    final preferences = await SharedPreferences.getInstance();
+    preferences.setString(widget.keyName, value);
+  }
+}
+
+class SmartSelectorItem {
+  final Key? key;
+  final Widget? leading;
+  final Widget text;
+  final Widget? trailing;
+  final bool selected;
+  final bool clickable;
+
+  SmartSelectorItem({this.key,
+    this.leading,
+    required this.text,
+    this.trailing,
+    this.selected = false,
+    this.clickable = true});
+}