import 'package:flutter/widgets.dart';

/// Carries render-time collaborators (the link-tap hook) down the node tree so
/// individual node widgets stay pure `(node) => Widget` builders.
class PmRenderScope extends InheritedWidget {
  /// Invoked when a link mark or an image `href` is tapped. The navigation /
  /// URL policy is injected from outside — the renderer only exposes the hook.
  final void Function(String href)? onLinkTap;

  const PmRenderScope({
    required this.onLinkTap,
    required super.child,
    super.key,
  });

  static PmRenderScope? maybeOf(BuildContext context) =>
      context.dependOnInheritedWidgetOfExactType<PmRenderScope>();

  @override
  bool updateShouldNotify(PmRenderScope oldWidget) =>
      oldWidget.onLinkTap != onLinkTap;
}