feat: add new command to get text

lib/get_text_command.dart

@@ -0,0 +1,180 @@
+import 'dart:convert';
+
+import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_driver/driver_extension.dart';
+import 'package:flutter_driver/src/common/find.dart';
+import 'package:flutter_driver/src/common/message.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+class Base64URL {
+  static String encode(String str) {
+    String base64 = base64Encode(utf8.encode(str));
+    return base64.replaceAll('+', '-').replaceAll('/', '_').replaceAll('=', '');
+  }
+
+  static String decode(String str) {
+    String base64 = str.replaceAll('-', '+').replaceAll('_', '/');
+
+    // Add padding if needed
+    switch (base64.length % 4) {
+      case 2:
+        base64 += '==';
+        break;
+      case 3:
+        base64 += '=';
+        break;
+    }
+
+    return utf8.decode(base64Decode(base64));
+  }
+}
+
+class FinderHelper {
+  static SerializableFinder deserializeBase64(String base64Str) {
+    try {
+      // Decode base64 to JSON string
+      final jsonStr = Base64URL.decode(base64Str);
+
+      // Parse JSON
+      final dynamic finderData = json.decode(jsonStr);
+
+      if (finderData is! Map<String, dynamic>) {
+        throw Exception('finder is not valid');
+      }
+
+      if (!finderData.containsKey('finderType')) {
+        throw Exception('Invalid finder format: missing finderType');
+      }
+
+      final String finderType = finderData['finderType'] as String;
+
+      switch (finderType) {
+        case 'ByText':
+          return ByText(finderData['text'] as String);
+
+        case 'ByType':
+          return ByType(finderData['type'] as String);
+
+        case 'ByValueKey':
+          final keyType = finderData['keyValueType'] as String?;
+          final keyValue = finderData['keyValueString'] as String;
+
+          if (keyType == 'int') {
+            return ByValueKey(int.parse(keyValue));
+          }
+          return ByValueKey(keyValue);
+
+        case 'Ancestor':
+          // Parse of and matching which are JSON strings
+          final ofJson = json.decode(finderData['of'] as String);
+          final matchingJson = json.decode(finderData['matching'] as String);
+
+          return Ancestor(
+            of: deserializeBase64(Base64URL.encode(json.encode(ofJson))),
+            matching:
+                deserializeBase64(Base64URL.encode(json.encode(matchingJson))),
+            matchRoot: finderData['matchRoot'] == 'true',
+            firstMatchOnly: finderData['firstMatchOnly'] == 'true',
+          );
+
+        case 'Descendant':
+          final ofJson = json.decode(finderData['of'] as String);
+          final matchingJson = json.decode(finderData['matching'] as String);
+
+          return Descendant(
+            of: deserializeBase64(Base64URL.encode(json.encode(ofJson))),
+            matching:
+                deserializeBase64(Base64URL.encode(json.encode(matchingJson))),
+            matchRoot: finderData['matchRoot'] == 'true',
+            firstMatchOnly: finderData['firstMatchOnly'] == 'true',
+          );
+
+        default:
+          throw Exception('Unsupported finder type: $finderType');
+      }
+    } catch (e) {
+      throw Exception('Error deserializing finder: $e');
+    }
+  }
+}
+
+class GetTextCommandExtension extends CommandExtension {
+  String? getTextFromWidget(Text widget) {
+    return widget.data ?? widget.textSpan?.toPlainText();
+  }
+
+  @override
+  Future<Result> call(
+      Command command,
+      WidgetController prober,
+      CreateFinderFactory finderFactory,
+      CommandHandlerFactory handlerFactory) async {
+    final GetTextCommand dragCommand = command as GetTextCommand;
+
+    // Create finder for Text widget
+    final type = dragCommand.base64Element;
+    // decodeBase64 to json
+    SerializableFinder serializableFinder =
+        FinderHelper.deserializeBase64(type);
+
+    final Finder finder = finderFactory.createFinder(serializableFinder);
+
+    // Get the widget element
+    final Element element = prober.element(finder);
+
+    // if element is not a Text widget, return false with error
+    if (element.widget is! Text) {
+      return const GetTextResult(false, data: {
+        'errorCode': 'NOT_A_TEXT_WIDGET',
+        'error': 'Found element is not a Text widget'
+      });
+    }
+
+    final text = getTextFromWidget(element.widget as Text);
+    return text != null
+        ? GetTextResult(true, data: {'text': text})
+        : const GetTextResult(false, data: {
+            'errorCode': 'NO_TEXT_CONTENT',
+            'error': 'No text content found'
+          });
+  }
+
+  @override
+  String get commandKind => 'getTextWithCommandExtension';
+
+  @override
+  Command deserialize(
+      Map<String, String> params,
+      DeserializeFinderFactory finderFactory,
+      DeserializeCommandFactory commandFactory) {
+    return GetTextCommand.deserialize(params);
+  }
+}
+
+class GetTextCommand extends Command {
+  final String base64Element;
+
+  GetTextCommand(this.base64Element);
+
+  @override
+  String get kind => 'getTextWithCommandExtension';
+
+  GetTextCommand.deserialize(Map<String, String> params)
+      : base64Element = params['findBy']!;
+}
+
+class GetTextResult extends Result {
+  final bool success;
+  final Map<String, dynamic>? data;
+
+  const GetTextResult(this.success, {this.data});
+
+  @override
+  Map<String, dynamic> toJson() {
+    return <String, dynamic>{
+      'success': success,
+      if (data != null) ...data!,
+    };
+  }
+}

lib/main.dart

@@ -2,12 +2,11 @@ import 'package:flutter/material.dart';
 import 'package:flutter_driver/driver_extension.dart';
 import 'package:flutter_driver/src/extension/extension.dart';
 
-import 'extended_commands.dart';
-
+import 'drag_commands.dart';
+import 'get_text_command.dart';
 
 void main() {
-  enableFlutterDriverExtension(
-      commands: [DragCommandExtension()]);
+  enableFlutterDriverExtension(commands: [DragCommandExtension(), GetTextCommandExtension()]);
   runApp(const MyApp());
 }
 
@@ -29,6 +28,7 @@ class MyApp extends StatelessWidget {
 
 class MyHomePage extends StatefulWidget {
   const MyHomePage({super.key, required this.title});
+
   final String title;
 
   @override
@@ -45,22 +45,62 @@ class _MyHomePageState extends State<MyHomePage> {
         title: Text(widget.title),
         backgroundColor: Theme.of(context).colorScheme.inversePrimary,
       ),
-      body: ReorderableListView(
-        padding: const EdgeInsets.all(8),
-        children: items.map((item) {
-          return ListTile(
-            key: ValueKey(item),
-            title: Text(item),
-            tileColor: Colors.grey.shade200,
-          );
-        }).toList(),
-        onReorder: (oldIndex, newIndex) {
-          setState(() {
-            if (newIndex > oldIndex) newIndex -= 1;
-            final item = items.removeAt(oldIndex);
-            items.insert(newIndex, item);
-          });
-        },
+      body: Column(
+        children: [
+          // Original ReorderableListView
+          Expanded(
+            child: ReorderableListView(
+              padding: const EdgeInsets.all(8),
+              children: items.map((item) {
+                return ListTile(
+                  key: ValueKey(item),
+                  title: Text(item),
+                  tileColor: Colors.grey.shade200,
+                );
+              }).toList(),
+              onReorder: (oldIndex, newIndex) {
+                setState(() {
+                  if (newIndex > oldIndex) newIndex -= 1;
+                  final item = items.removeAt(oldIndex);
+                  items.insert(newIndex, item);
+                });
+              },
+            ),
+          ),
+          // TextSpan example
+          const Padding(
+            padding: EdgeInsets.all(16.0),
+            child: Text.rich(
+              TextSpan(
+                children: [
+                  TextSpan(
+                    text: 'Amount: ',
+                    style: TextStyle(
+                      fontSize: 18,
+                      color: Colors.grey,
+                    ),
+                  ),
+                  TextSpan(
+                    text: '100',
+                    style: TextStyle(
+                      fontSize: 20,
+                      fontWeight: FontWeight.bold,
+                      color: Colors.blue,
+                    ),
+                  ),
+                  TextSpan(
+                    text: ' USD',
+                    style: TextStyle(
+                      fontSize: 16,
+                      color: Colors.grey,
+                    ),
+                  ),
+                ],
+              ),
+              key: ValueKey('amount'),
+            ),
+          ),
+        ],
       ),
     );
   }

test_driver/app.dart

@@ -1,4 +1,4 @@
-import 'package:demo/extended_commands.dart';
+import 'package:demo/drag_commands.dart';
 import 'package:flutter_driver/driver_extension.dart';
 import 'package:demo/main.dart' as app;