adding packages

2026-01-15 14:38:46 -08:00
parent ef86e3ab6a
commit 6869cf47e5
5253 changed files with 726695 additions and 34 deletions
@@ -0,0 +1,138 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+typedef ItemWidgetBuilder = Widget Function(
+    BuildContext context, dynamic item, bool tablet);
+typedef IndexedWidgetBuilder = Widget Function(BuildContext context, int index);
+
+class CupertinoMasterDetailController extends StatelessWidget {
+  final ItemWidgetBuilder detailBuilder;
+  final IndexedWidgetBuilder itemBuilder;
+  final Widget? onNull, onEmpty;
+  final PreferredSizeWidget? appBar;
+  final dynamic selectedItem;
+  final ValueChanged<dynamic> itemSelected;
+  final List<dynamic> items;
+
+  CupertinoMasterDetailController({
+    required this.detailBuilder,
+    required this.selectedItem,
+    required this.itemSelected,
+    required this.itemBuilder,
+    required this.items,
+    this.appBar,
+    this.onNull,
+    this.onEmpty,
+  });
+
+  Widget _buildMobileLayout(BuildContext context) {
+    return Scaffold(
+        body: CupertinoPageScaffold(
+            child: CustomScrollView(
+                semanticChildCount: items.length,
+                slivers: <Widget>[
+          CupertinoSliverNavigationBar(
+            largeTitle: Text("Presidents"),
+          ),
+          _ItemListing(
+            onEmpty: onEmpty,
+            onNull: onNull,
+            itemBuilder: itemBuilder,
+            items: items,
+            selectedItem: selectedItem,
+            itemSelectedCallback: (item) {
+              Navigator.push(
+                context,
+                MaterialPageRoute(
+                    builder: (context) => detailBuilder(context, item, false)),
+              );
+            },
+          ),
+        ])));
+  }
+
+  Widget _buildTabletLayout(BuildContext context) {
+    return OrientationBuilder(builder: (context, orientation) {
+      return Row(
+        children: <Widget>[
+          Flexible(
+            flex: orientation == Orientation.landscape ? 1 : 2,
+            child: Scaffold(
+                appBar: appBar,
+                body: CustomScrollView(slivers: [
+                  _ItemListing(
+                    onEmpty: onEmpty,
+                    onNull: onNull,
+                    itemBuilder: itemBuilder,
+                    items: items,
+                    selectedItem: selectedItem,
+                    itemSelectedCallback: itemSelected,
+                  ),
+                ])),
+          ),
+          Container(
+            width: 1.0,
+            color: Colors.grey[300],
+          ),
+          Flexible(
+            flex: 3,
+            child: detailBuilder(context, selectedItem, true),
+          ),
+        ],
+      );
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    var shortestSide = MediaQuery.of(context).size.shortestSide;
+    final bool useMobileLayout = shortestSide < 600;
+
+    if (useMobileLayout) {
+      return _buildMobileLayout(context);
+    }
+
+    return _buildTabletLayout(context);
+  }
+}
+
+class _ItemListing extends StatelessWidget {
+  _ItemListing({
+    required this.itemSelectedCallback,
+    this.selectedItem,
+    this.itemBuilder,
+    this.items,
+    this.onNull,
+    this.onEmpty,
+  });
+
+  final ValueChanged<dynamic> itemSelectedCallback;
+  final dynamic selectedItem;
+  final IndexedWidgetBuilder? itemBuilder;
+  final List<dynamic>? items;
+  final Widget? onNull, onEmpty;
+
+  @override
+  Widget build(BuildContext context) {
+    if (items == null) {
+      return onNull ?? Center(child: CircularProgressIndicator());
+    }
+
+    if (items!.isEmpty) {
+      return onEmpty ?? Center(child: Text("No Items Found"));
+    }
+
+    return SliverList(
+      delegate: SliverChildBuilderDelegate(
+        (BuildContext context, int index) {
+          final _child = itemBuilder!(context, index);
+          return GestureDetector(
+            onTap: () => itemSelectedCallback(items![index]),
+            child: _child,
+          );
+        },
+        childCount: items!.length,
+      ),
+    );
+  }
+}