Add debugger.dart to example/

example/lib/debugger.dart

@@ -0,0 +1,145 @@
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:dartssh2/dartssh2.dart';
+import 'package:example/src/virtual_keyboard.dart';
+import 'package:flutter/cupertino.dart';
+import 'package:xterm/utils.dart';
+import 'package:xterm/xterm.dart';
+
+const host = 'localhost';
+const port = 22;
+const username = '<your username>';
+const password = '<your password>';
+
+void main() {
+  runApp(MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return CupertinoApp(
+      title: 'xterm.dart debugger',
+      home: MyHomePage(),
+    );
+  }
+}
+
+class MyHomePage extends StatefulWidget {
+  MyHomePage({super.key});
+
+  @override
+  // ignore: library_private_types_in_public_api
+  _MyHomePageState createState() => _MyHomePageState();
+}
+
+class _MyHomePageState extends State<MyHomePage> {
+  /// The main terminal that user interacts with
+  late final terminal = Terminal(inputHandler: keyboard);
+  final keyboard = VirtualKeyboard(defaultInputHandler);
+
+  /// The debugger used to record and parse terminal data
+  final debugger = TerminalDebugger();
+
+  /// A temporary terminal to display playback data. null if not in playback
+  /// mode.
+  Terminal? debuggerTerminal;
+
+  var title = host;
+
+  @override
+  void initState() {
+    super.initState();
+    initTerminal();
+  }
+
+  /// Write data to both the main terminal and the debugger
+  void write(String data) {
+    terminal.write(data);
+    debugger.write(data);
+  }
+
+  Future<void> initTerminal() async {
+    write('Connecting...\r\n');
+
+    final client = SSHClient(
+      await SSHSocket.connect(host, port),
+      username: username,
+      onPasswordRequest: () => password,
+    );
+
+    write('Connected\r\n');
+
+    final session = await client.shell(
+      pty: SSHPtyConfig(
+        width: terminal.viewWidth,
+        height: terminal.viewHeight,
+      ),
+    );
+
+    terminal.buffer.clear();
+    terminal.buffer.setCursor(0, 0);
+
+    terminal.onTitleChange = (title) {
+      setState(() => this.title = title);
+    };
+
+    terminal.onResize = (width, height, pixelWidth, pixelHeight) {
+      session.resizeTerminal(width, height, pixelWidth, pixelHeight);
+    };
+
+    terminal.onOutput = (data) {
+      session.write(utf8.encode(data));
+    };
+
+    session.stdout.cast<List<int>>().transform(Utf8Decoder()).listen(write);
+    session.stderr.cast<List<int>>().transform(Utf8Decoder()).listen(write);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return CupertinoPageScaffold(
+      navigationBar: CupertinoNavigationBar(
+        middle: Text(title),
+        backgroundColor:
+            CupertinoTheme.of(context).barBackgroundColor.withOpacity(0.5),
+      ),
+      child: Column(
+        children: [
+          Expanded(
+            child: Row(
+              children: [
+                Expanded(
+                  child: TerminalView(debuggerTerminal ?? terminal),
+                ),
+                SizedBox(
+                  width: 600,
+                  child: TerminalDebuggerView(
+                    debugger,
+                    onSeek: (commandIndex) {
+                      if (commandIndex == null) {
+                        setState(() => this.debuggerTerminal = null);
+                        return;
+                      }
+
+                      // Get all data rangin from beginning to the command
+                      // selected and write it to the temporary terminal
+                      final command = debugger.commands[commandIndex];
+                      final data = debugger.getRecord(command);
+
+                      final debuggerTerminal = Terminal();
+                      debuggerTerminal.write(data);
+                      setState(() => this.debuggerTerminal = debuggerTerminal);
+                    },
+                  ),
+                ),
+              ],
+            ),
+          ),
+          VirtualKeyboardView(keyboard),
+        ],
+      ),
+    );
+  }
+}