90 lines
2.4 KiB
Dart
90 lines
2.4 KiB
Dart
import 'package:flutter/material.dart';
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class HoverSubmenu extends StatefulWidget {
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final String title;
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final List<String> submenuItems;
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const HoverSubmenu(
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{super.key, required this.title, required this.submenuItems});
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@override
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State<HoverSubmenu> createState() => _HoverSubmenuState();
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}
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class _HoverSubmenuState extends State<HoverSubmenu> {
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OverlayEntry? _submenuOverlay;
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final LayerLink _submenuLink = LayerLink();
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void _showSubmenu(BuildContext context) {
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_submenuOverlay = _createSubmenu();
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Overlay.of(context).insert(_submenuOverlay!);
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}
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void _hideSubmenu() {
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_submenuOverlay?.remove();
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_submenuOverlay = null;
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}
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OverlayEntry _createSubmenu() {
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return OverlayEntry(
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builder: (context) => Positioned(
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left: 250, // Adjust submenu position
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top: 0,
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child: CompositedTransformFollower(
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link: _submenuLink,
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offset: Offset(200, 0),
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child: MouseRegion(
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onExit: (_) => _hideSubmenu(),
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child: Material(
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elevation: 4,
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color: Colors.white,
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child: Container(
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width: 200,
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padding: EdgeInsets.all(10),
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(8),
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boxShadow: [BoxShadow(color: Colors.black26, blurRadius: 4)],
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),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: widget.submenuItems
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.map((item) => ListTile(
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title: Text(item),
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onTap: () {
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_hideSubmenu();
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print('$item clicked');
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},
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))
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.toList(),
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),
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),
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),
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),
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),
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),
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);
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}
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@override
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Widget build(BuildContext context) {
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return CompositedTransformTarget(
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link: _submenuLink,
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child: MouseRegion(
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onEnter: (_) => _showSubmenu(context),
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child: ListTile(
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title: Text(widget.title),
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trailing: Icon(Icons.arrow_right),
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onTap: () {},
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),
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),
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);
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}
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@override
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void dispose() {
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_submenuOverlay?.remove();
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_submenuOverlay = null;
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super.dispose();
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}
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}
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