Add Markdown text style, scroll-end trigger, lenient setVariable values

TextNode.markdown (MarkdownStyle) renders a text as Markdown. A new
scrollEnd trigger on lists, grids and rows/columns runs when they near
their end. SetVariableAction reads JSON booleans, numbers, lists and
maps as the text newValue holds.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015oUVfxbYsbTuDQJkxfcXev

Author: claude

lib/src/api/models/action/set_variable_action.dart

@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import 'package:json_annotation/json_annotation.dart';
 import 'package:equatable/equatable.dart';
 
@@ -86,8 +88,19 @@ class SetVariableAction extends ActionModel
   );
 
   /// Creates a new [SetVariableAction] instance from a JSON data.
-  factory SetVariableAction.fromJson(Map json) =>
-      _$SetVariableActionFromJson(json);
+  ///
+  /// [newValue] is text; JSON written by hand often gives `true`, `20` or a
+  /// list instead, which becomes its text (lists and maps as JSON).
+  factory SetVariableAction.fromJson(Map json) {
+    final Object? value = json['newValue'];
+    if (value == null || value is String) {
+      return _$SetVariableActionFromJson(json);
+    }
+    return _$SetVariableActionFromJson({
+      ...json,
+      'newValue': value is List || value is Map ? jsonEncode(value) : '$value',
+    });
+  }
 
   @override
   Map toJson() =>

lib/src/api/models/markdown_style.dart

@@ -0,0 +1,87 @@
+import 'package:equatable/equatable.dart';
+import 'package:json_annotation/json_annotation.dart';
+
+import '../mixins.dart';
+import 'models.dart';
+
+part 'markdown_style.g.dart';
+
+/// Renders a text's characters as Markdown: `**bold**`, `_italic_`,
+/// `` `code` ``, links, `@mentions`, `- ` and `1. ` list items and blank-line
+/// paragraphs. Set on a [TextNode] (`markdown`) for text from data such as
+/// message bodies, and on a text field to style what's typed live.
+///
+/// Colors default to the text's own color where null.
+@JsonSerializable()
+class MarkdownStyle with Equatable, SerializableMixin {
+  /// Inline code text color.
+  final ColorRGBA? codeColor;
+
+  /// Inline code background.
+  final ColorRGBA? codeBackground;
+
+  /// Inline code font family.
+  final String codeFontFamily;
+
+  /// Link color (links are underlined).
+  final ColorRGBA? linkColor;
+
+  /// `@mention` color.
+  final ColorRGBA? mentionColor;
+
+  /// `@mention` background.
+  final ColorRGBA? mentionBackground;
+
+  /// Handles that count as mentions, without `@`. Empty: any `@word`.
+  final List<String> mentions;
+
+  /// Bullet and list number color.
+  final ColorRGBA? bulletColor;
+
+  /// Extra space between paragraphs (blank lines), in pixels.
+  final double paragraphGap;
+
+  /// Keeps the markers (`**`, `_`, backticks, list markers) visible, dimmed
+  /// to [markerColor]: the live preview of a text being typed.
+  final bool showMarkers;
+
+  /// Color of visible markers.
+  final ColorRGBA? markerColor;
+
+  /// Creates a [MarkdownStyle].
+  const MarkdownStyle({
+    this.codeColor,
+    this.codeBackground,
+    this.codeFontFamily = 'JetBrains Mono',
+    this.linkColor,
+    this.mentionColor,
+    this.mentionBackground,
+    this.mentions = const [],
+    this.bulletColor,
+    this.paragraphGap = 8,
+    this.showMarkers = false,
+    this.markerColor,
+  });
+
+  /// Creates a [MarkdownStyle] from JSON. Colors may be `#RRGGBB` or
+  /// `#AARRGGBB` text.
+  factory MarkdownStyle.fromJson(Map json) => _$MarkdownStyleFromJson(json);
+
+  @override
+  Map toJson() => _$MarkdownStyleOmitDefaults(this, _$MarkdownStyleToJson(this));
+
+  @override
+  List<Object?> get props => [
+    codeColor,
+    codeBackground,
+    codeFontFamily,
+    linkColor,
+    mentionColor,
+    mentionBackground,
+    mentions,
+    bulletColor,
+    paragraphGap,
+    showMarkers,
+    markerColor,
+  ];
+}

lib/src/api/models/markdown_style.g.dart

@@ -57,6 +57,7 @@ export 'input_border.dart';
 export 'input_decoration.dart';
 export 'letter_spacing.dart';
 export 'line_height.dart';
+export 'markdown_style.dart';
 export 'motion.dart';
 export 'list_tile_control_affinity.dart';
 export 'loop_animation.dart';

lib/src/api/models/models.dart

@@ -102,7 +102,11 @@ enum TriggerType {
   /// key's label: `a`, `ArrowLeft`, `Delete`, `Escape`, ...),
   /// `${result.shift}`, `${result.alt}` and `${result.meta}` (Command on
   /// macOS, Control elsewhere). [TriggerModel.key] limits it to one key.
-  keyDown;
+  keyDown,
+
+  /// A scrolling list, grid, row or column came within a short distance of
+  /// its end (or its content doesn't fill it): load the next page.
+  scrollEnd;
 
   /// The triggers for the mouse cursor entering and leaving the target.
   static const List<TriggerType> hovers = [
@@ -177,6 +181,8 @@ enum TriggerType {
         return 'Drag End';
       case TriggerType.keyDown:
         return 'Key Down';
+      case TriggerType.scrollEnd:
+        return 'Reached End';
     }
   }
 }

lib/src/api/models/trigger.dart

@@ -29,6 +29,9 @@ class GridViewNode extends SinglePlaceholderNode
   @override
   bool get isScrollingEnforced => true;
 
+  @override
+  List<TriggerType> get triggerTypes => [TriggerType.scrollEnd];
+
   @override
   bool get canBeMarked => true;
 

lib/src/api/models/trigger.g.dart

@@ -26,6 +26,9 @@ class ListViewNode extends SinglePlaceholderNode
   @override
   bool get isScrollingEnforced => true;
 
+  @override
+  List<TriggerType> get triggerTypes => [TriggerType.scrollEnd];
+
   @override
   bool get canBeMarked => true;