自习室优化ok

lib/widgets/room/board/board_dialog.dart

@@ -0,0 +1,73 @@
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+import 'package:remixicon/remixicon.dart';
+import 'package:webview_flutter/webview_flutter.dart';
+
+
+class BoardDialog extends StatefulWidget {
+  final WebViewController controller;
+  const BoardDialog({super.key, required this.controller});
+
+  @override
+  State<BoardDialog> createState() => _BoardDialogState();
+}
+
+class _BoardDialogState extends State<BoardDialog> {
+  bool _loading = true;
+
+  @override
+  void initState() {
+    super.initState();
+
+    // 绑定加载事件
+    widget.controller.setNavigationDelegate(
+      NavigationDelegate(
+        onPageStarted: (_) {
+          setState(() => _loading = true);
+        },
+        onPageFinished: (_) {
+          setState(() => _loading = false);
+        },
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      color: Colors.white,
+      padding: const EdgeInsets.all(16),
+      child: Column(
+        children: [
+          Row(
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: [
+              Text('白板', style: Theme.of(context).textTheme.titleSmall),
+              IconButton(
+                onPressed: () => context.pop(),
+                icon: const Icon(RemixIcons.close_circle_fill),
+              ),
+            ],
+          ),
+          Expanded(
+            child: Stack(
+              children: [
+                WebViewWidget(
+                  controller: widget.controller,
+                ),
+                if (_loading)
+                  Container(
+                    color: Colors.white,
+                    child: const Center(
+                      child: CircularProgressIndicator(),
+                    ),
+                  ),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}
+