fix: Fixed parsing of multiline text from ObjectGroup. (#79)

* Fixed a test for multiline properties in Windows.

* Fixed an empty string when parse multiline text from object group.

---------

Co-authored-by: Lukas Klingsbo <me@lukas.fyi>

Author: Andrii Syrokomskyi

packages/tiled/lib/src/objects/text.dart

@@ -74,7 +74,8 @@ class Text {
           fontFamily: parser.getString('fontFamily', defaults: 'sans-serif'),
           pixelSize: parser.getInt('pixelSize', defaults: 16),
           color: parser.getString('color', defaults: '#000000'),
-          text: parser.getString('text', defaults: ''),
+          text: parser.getInnerTextOrNull() ??
+              parser.getString('text', defaults: ''),
           hAlign: parser.getHAlign('hAlign', defaults: HAlign.left),
           vAlign: parser.getVAlign('vAlign', defaults: VAlign.top),
           bold: parser.getBool('bold', defaults: false),

packages/tiled/lib/src/parser.dart

@@ -11,6 +11,10 @@ class XmlParser extends Parser {
   final XmlElement element;
   XmlParser(this.element);
 
+  @override
+  String? getInnerTextOrNull() =>
+      element.innerText.isEmpty ? null : element.innerText;
+
   @override
   String? getStringOrNull(String name, {String? defaults}) {
     return element.getAttribute(name) ?? defaults;
@@ -46,6 +50,9 @@ class JsonParser extends Parser {
   final Map<String, dynamic> json;
   JsonParser(this.json);
 
+  @override
+  String? getInnerTextOrNull() => null;
+
   @override
   String? getStringOrNull(String name, {String? defaults}) {
     return json[name]?.toString() ?? defaults;
@@ -75,6 +82,8 @@ class JsonParser extends Parser {
 }
 
 abstract class Parser {
+  String? getInnerTextOrNull();
+
   String? getStringOrNull(String name, {String? defaults});
 
   List<Parser> getChildren(String name);

packages/tiled/test/parser_test.dart

@@ -2,6 +2,7 @@ import 'dart:io';
 import 'dart:math' show Rectangle;
 import 'dart:ui';
 
+import 'package:collection/collection.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:tiled/tiled.dart';
 import 'package:xml/xml.dart';
@@ -88,7 +89,9 @@ void main() {
             equals('test_value'),
           );
           expect(
-            properties.getValue<String>('multiline string'),
+            properties
+                .getValue<String>('multiline string')
+                ?.replaceAll('\r\n', '\n'),
             equals('Hello,\nWorld'),
           );
           expect(
@@ -235,6 +238,15 @@ void main() {
       test('has the right class_', () {
         expect(og.class_, equals('objectLayer1Class'));
       });
+
+      test('has the right text object with ID 5', () {
+        final textObject = (og as ObjectGroup)
+            .objects
+            .firstWhereOrNull((element) => element.id == 5);
+        final text = textObject?.text;
+        expect(text?.wrap, equals(true));
+        expect(text?.text, equals('Hello World'));
+      });
     });
   });