// 新增两个小工具
/// 把 RouteMatchList 变成完整路径列表
static List<String> _currentPaths(BuildContext context) {
final matches = GoRouter.of(context).routerDelegate.currentConfiguration;
return matches.matches
.map((m) => m.matchedLocation)
.where((loc) => loc != '/') // 去掉根 "/" 占位
.toList();
}
/// 安全地连续 pop
static void _popTimes(BuildContext context, int times) {
for (var i = 0; i < times; i++) {
if (!GoRouter.of(context).canPop()) break;
if (!context.mounted) return;
GoRouter.of(context).pop();
}
}
/// 一直返回，直到栈顶路径 == targetRoute
static Future<T?> goUntil<T extends Object?>(
String targetRoute, {
Map<String, dynamic>? parameters,
}) async {
final context = validateContext();
final router = GoRouter.of(context);
// 当前路由栈
final paths = _currentPaths(context);
// 找到目标索引
final index = paths.lastIndexWhere((p) => p == targetRoute);
if (index == -1) {
UNITIRoute.go('/', parameters: parameters);
return null;
}
// 需要 pop 的次数
final popCount = paths.length - 1 - index;
_popTimes(context, popCount);
return null;
}
/// 跳转到 newRoute，并移除从栈顶到 targetRoute 之后的所有页面
static Future<T?> goOffNamedUntil<T extends Object?>(
String newRoute,
String targetRoute, {
Map<String, dynamic>? parameters,
}) async {
final context = validateContext();
final router = GoRouter.of(context);
// 当前路由栈
final paths = _currentPaths(context);
final index = paths.lastIndexWhere((p) => p == targetRoute);
final popCount = index == -1 ? paths.length : paths.length - 1 - index;
_popTimes(context, popCount);
return UNITIRoute.push(newRoute, parameters: parameters);
}
