274 lines
11 KiB
Dart
274 lines
11 KiB
Dart
import 'package:flutter/material.dart';
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// --- Data Structure for Sidebar Menu Items ---
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class SidebarItem {
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final IconData? icon; // Now nullable, as we might use an image
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final String label;
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final String? route; // Null if it's a parent category
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final List<SidebarItem>? children; // Sub-items
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final bool isParent;
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final String? imagePath; // New: Optional path to an image asset
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SidebarItem({
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this.icon,
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required this.label,
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this.route,
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this.children,
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this.isParent = false,
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this.imagePath, // Initialize the new property
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}) : assert(icon != null || imagePath != null, 'Either icon or imagePath must be provided'); // Ensure one is present
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}
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// --- Collapsible Sidebar Widget ---
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class CollapsibleSidebar extends StatefulWidget {
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final Function(String route) onNavigate;
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final bool isCollapsed; // Receive collapse state from HomePage
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final VoidCallback onToggle; // Receive toggle callback from HomePage (for AppBar button)
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const CollapsibleSidebar({
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super.key,
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required this.onNavigate,
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required this.isCollapsed,
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required this.onToggle,
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});
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@override
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State<CollapsibleSidebar> createState() => _CollapsibleSidebarState();
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}
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class _CollapsibleSidebarState extends State<CollapsibleSidebar> {
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// Define your menu items here based on the routes you provided
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late final List<SidebarItem> _menuItems;
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@override
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void initState() {
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super.initState();
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// --- MODIFIED: Menu items now match the home pages ---
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_menuItems = [
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// ====== AIR ======
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SidebarItem(
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icon: Icons.cloud,
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label: "Air",
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isParent: true,
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children: [
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SidebarItem(
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icon: Icons.handshake,
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label: "Manual",
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isParent: true,
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children: [
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SidebarItem(icon: Icons.description, label: "Info Centre Document", route: '/air/manual/info'),
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SidebarItem(icon: Icons.construction, label: "Installation", route: '/air/manual/installation'),
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SidebarItem(icon: Icons.inventory_2, label: "Collection", route: '/air/manual/collection'),
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SidebarItem(icon: Icons.article, label: "Data Log", route: '/air/manual/data-log'),
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],
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),
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SidebarItem(
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icon: Icons.trending_up, label: "Continuous", isParent: true, children: [
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SidebarItem(icon: Icons.description, label: "Info Centre Document", route: '/air/continuous/info'),
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]),
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SidebarItem(
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icon: Icons.search, label: "Investigative", isParent: true, children: [
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SidebarItem(icon: Icons.description, label: "Info Centre Document", route: '/air/investigative/info'),
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]),
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],
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),
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// ====== RIVER ======
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SidebarItem(
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icon: Icons.water,
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label: "River",
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isParent: true,
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children: [
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SidebarItem(
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icon: Icons.handshake,
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label: "Manual",
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isParent: true,
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children: [
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SidebarItem(icon: Icons.description, label: "Info Centre Document", route: '/river/manual/info'),
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SidebarItem(icon: Icons.pin_drop, label: "In-Situ Sampling", route: '/river/manual/in-situ'),
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SidebarItem(icon: Icons.date_range, label: "Triennial Sampling", route: '/river/manual/triennial'),
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SidebarItem(icon: Icons.article, label: "Data Log", route: '/river/manual/data-log'),
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],
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),
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SidebarItem(
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icon: Icons.trending_up, label: "Continuous", isParent: true, children: [
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SidebarItem(icon: Icons.description, label: "Info Centre Document", route: '/river/continuous/info'),
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]),
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SidebarItem(
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icon: Icons.search, label: "Investigative", isParent: true, children: [
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SidebarItem(icon: Icons.description, label: "Info Centre Document", route: '/river/investigative/info'),
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]),
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],
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),
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// ====== MARINE ======
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SidebarItem(
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icon: Icons.sailing,
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label: "Marine",
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isParent: true,
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children: [
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SidebarItem(
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icon: Icons.handshake,
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label: "Manual",
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isParent: true,
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children: [
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SidebarItem(icon: Icons.description, label: "Info Centre Document", route: '/marine/manual/info'),
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SidebarItem(icon: Icons.assignment, label: "Pre-Sampling", route: '/marine/manual/pre-sampling'),
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SidebarItem(icon: Icons.pin_drop, label: "In-Situ Sampling", route: '/marine/manual/in-situ'),
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SidebarItem(icon: Icons.waves, label: "Tarball Sampling", route: '/marine/manual/tarball'),
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SidebarItem(icon: Icons.article, label: "Data Log", route: '/marine/manual/data-log'),
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],
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),
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SidebarItem(
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icon: Icons.trending_up, label: "Continuous", isParent: true, children: [
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SidebarItem(icon: Icons.description, label: "Info Centre Document", route: '/marine/continuous/info'),
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]),
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SidebarItem(
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icon: Icons.search, label: "Investigative", isParent: true, children: [
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SidebarItem(icon: Icons.description, label: "Info Centre Document", route: '/marine/investigative/info'),
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]),
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],
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),
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// ====== SETTINGS ======
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SidebarItem(icon: Icons.settings, label: "Settings", route: '/settings'),
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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 Container(
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width: widget.isCollapsed ? 70 : 280, // Increased expanded width for sub-menus
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color: Theme.of(context).primaryColor, // Use theme primary color for sidebar
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child: Column(
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children: [
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const SizedBox(height: 16), // Spacing below the (now removed) toggle button area
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Expanded(
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child: ListView(
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padding: EdgeInsets.zero, // Remove default listview padding
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children: [
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if (!widget.isCollapsed) ...[
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// If sidebar is expanded, show full categories with sub-menus
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for (var item in _menuItems)
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_buildExpandableNavItem(item),
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] else ...[
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// If sidebar is collapsed, only show icons for top-level items
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for (var item in _menuItems)
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_buildCollapsedNavItem(item),
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],
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],
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),
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),
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const Divider(color: Colors.white24, height: 1), // Separator before logout
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// Logout item, using an icon as it's a standard action
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_buildNavItem(Icons.logout, "Logout", '/logout', isTopLevel: true),
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],
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),
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);
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}
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// Helper to build the leading widget (Icon or Image) for a sidebar item
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Widget _buildLeadingWidget(SidebarItem item) {
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// Now only checks for icon, as imagePath is not used for top-level items anymore
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// but the property still exists on SidebarItem for potential future use or other items.
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return Icon(item.icon, color: Colors.white);
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}
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// Builds an expandable item for parent categories (only when sidebar is expanded)
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Widget _buildExpandableNavItem(SidebarItem item) {
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if (item.children == null || item.children!.isEmpty) {
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// This case handles a top-level item that is NOT a parent,
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// like the "Settings" item.
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return _buildNavItem(item.icon, item.label, item.route ?? '', isTopLevel: true, imagePath: item.imagePath);
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}
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return Theme(
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data: Theme.of(context).copyWith(dividerColor: Colors.transparent), // Hide divider in expansion tile
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child: ExpansionTile(
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initiallyExpanded: false, // You can set this to true if you want some categories open by default
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leading: _buildLeadingWidget(item), // Use the helper for leading widget
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title: Text(item.label, style: const TextStyle(color: Colors.white)),
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iconColor: Colors.white,
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collapsedIconColor: Colors.white,
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childrenPadding: const EdgeInsets.only(left: 20.0), // Indent sub-items
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children: item.children!.map((childItem) {
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if (childItem.isParent) {
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// Nested expansion tiles for sub-categories like "Manual", "Continuous"
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return _buildExpandableNavItem(childItem);
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} else {
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// Leaf item (actual navigation link)
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return _buildNavItem(childItem.icon, childItem.label, childItem.route ?? '', imagePath: childItem.imagePath);
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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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// Builds a regular navigation item (for sub-items when expanded, or top-level when collapsed)
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Widget _buildNavItem(IconData? icon, String label, String route, {bool isTopLevel = false, String? imagePath}) {
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return InkWell(
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onTap: () {
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if (route.isNotEmpty) {
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widget.onNavigate(route);
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}
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},
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child: Padding(
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padding: EdgeInsets.symmetric(
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vertical: 12,
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horizontal: isTopLevel && widget.isCollapsed ? 0 : 8, // Center icon if top-level and collapsed
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),
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child: isTopLevel && widget.isCollapsed
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? Center(
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child: icon != null
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? Icon(icon, color: Colors.white)
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: const SizedBox.shrink(), // Fallback if no icon or imagePath
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) // Only icon when collapsed
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: Row(
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children: [
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icon != null
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? Icon(icon, color: Colors.white)
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: const SizedBox.shrink(), // Fallback if no icon or imagePath
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const SizedBox(width: 12),
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Expanded( // Use Expanded to prevent text overflow
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child: Text(label, style: const TextStyle(color: Colors.white)),
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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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// Builds a collapsed navigation item (only icon/image) for top-level categories
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Widget _buildCollapsedNavItem(SidebarItem item) {
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return InkWell(
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onTap: () {
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if (item.route != null && item.route!.isNotEmpty) {
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widget.onNavigate(item.route!);
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} else {
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// If a parent item is tapped when collapsed, expand the sidebar
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widget.onToggle();
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}
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},
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child: Padding(
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padding: const EdgeInsets.symmetric(vertical: 8.0, horizontal: 0), // Adjusted vertical padding
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child: Column(
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mainAxisSize: MainAxisSize.min, // Use minimum space
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children: [
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item.icon != null
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? Icon(item.icon, color: Colors.white, size: 24) // Icon size
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: const SizedBox.shrink(), // Fallback if no icon
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const SizedBox(height: 4), // Small space between icon and text
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Text(
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item.label,
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style: const TextStyle(
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color: Colors.white,
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fontSize: 10, // Smaller font size to fit
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),
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overflow: TextOverflow.ellipsis, // Handle long labels
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maxLines: 1, // Ensure it stays on one line
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textAlign: TextAlign.center, // Center the text
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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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} |