books

packages/components/lib/toly_ui/navigation/toly_navigation_rail.dart

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+import 'package:flutter/material.dart';
+
+import 'menu_meta.dart';
+
+class TolyNavigationRail extends StatelessWidget {
+  final ValueChanged<int> onDestinationSelected;
+  final Color backgroundColor;
+  final int? selectedIndex;
+  final Widget? leading;
+  final Widget? tail;
+  final List<MenuMeta> items;
+  const TolyNavigationRail({
+    Key? key,
+    required this.onDestinationSelected,
+    required this.selectedIndex,
+    required this.items,
+    this.leading,
+    this.tail,
+    required this.backgroundColor,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: 64,
+      color: backgroundColor,
+      child: Column(
+        children: [
+          if(leading!=null) leading!,
+          Expanded(
+              child: LeftNavigationMenu(
+            items: items,
+            selectedIndex: selectedIndex,
+            onTapItem: onDestinationSelected,
+          )),
+          if(tail!=null) tail!,
+        ],
+      ),
+    );
+  }
+}
+
+class LeftNavigationMenu extends StatelessWidget {
+  final List<MenuMeta> items;
+  final ValueChanged<int> onTapItem;
+
+  final int? selectedIndex;
+
+  const LeftNavigationMenu(
+      {Key? key,
+      required this.items,
+      required this.selectedIndex,
+      required this.onTapItem})
+      : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: items.asMap().keys.map((int index) {
+        return LeftNavigationBarItemWidget(
+          item: items[index],
+          selected: index == selectedIndex,
+          onTap: () {
+            onTapItem.call(index);
+          },
+        );
+      }).toList(),
+    );
+  }
+}
+
+class LeftNavigationBarItemWidget extends StatefulWidget {
+  final MenuMeta item;
+  final bool selected;
+  final VoidCallback onTap;
+
+  const LeftNavigationBarItemWidget(
+      {Key? key,
+      required this.item,
+      required this.selected,
+      required this.onTap})
+      : super(key: key);
+
+  @override
+  State<LeftNavigationBarItemWidget> createState() =>
+      _LeftNavigationBarItemWidgetState();
+}
+
+class _LeftNavigationBarItemWidgetState
+    extends State<LeftNavigationBarItemWidget> {
+  bool _hover = false;
+
+  @override
+  Widget build(BuildContext context) {
+    Color? bgColor;
+    Color iconColor;
+    if (widget.selected) {
+      bgColor = Colors.white.withOpacity(0.2);
+      iconColor = Colors.white;
+    } else {
+      bgColor = _hover ? Colors.white.withOpacity(0.1) : null;
+      iconColor = Colors.white.withOpacity(0.8);
+    }
+
+    return InkWell(
+      onTap: widget.selected
+          ? null
+          : () {
+              widget.onTap();
+              setState(() {
+                _hover = false;
+              });
+            },
+      onHover: widget.selected
+          ? null
+          : (v) {
+              setState(() {
+                _hover = v;
+              });
+            },
+      child: Container(
+        alignment: Alignment.center,
+        margin: EdgeInsets.only(bottom: 10),
+        width: 50,
+        height: 50,
+        decoration: BoxDecoration(
+            color: bgColor, borderRadius: BorderRadius.circular(8)),
+        child: Wrap(
+          direction: Axis.vertical,
+          crossAxisAlignment: WrapCrossAlignment.center,
+          spacing: 2,
+          children: [
+            Icon(
+              widget.item.icon,
+              color: iconColor,
+            ),
+            Text(
+              widget.item.label,
+              style: TextStyle(color: iconColor, fontSize: 12),
+            )
+          ],
+        ),
+      ),
+    );
+  }
+}