Conductor UI step1 (#91903)

* finished dropdown widget

* removed mock state

* Added step 1 substeps

* stepper tests fail

* tests still fail

* removed redundant checkbox

* removed test data

* full fixes based on Chris' comments

* changed widget's name

* changed statefulwidget, added test

* fixes based on Casey's comments

* empty commit to kick pending checks

dev/conductor/ui/lib/widgets/conductor_status.dart

@@ -18,7 +18,7 @@ class ConductorStatus extends StatefulWidget {
   final String stateFilePath;
 
   @override
-  ConductorStatusState createState() => ConductorStatusState();
+  State<ConductorStatus> createState() => ConductorStatusState();
 
   static final List<String> headerElements = <String>[
     'Conductor Version',
@@ -194,7 +194,7 @@ class CherrypickTable extends StatefulWidget {
   final Map<String, Object> currentStatus;
 
   @override
-  CherrypickTableState createState() => CherrypickTableState();
+  State<CherrypickTable> createState() => CherrypickTableState();
 }
 
 class CherrypickTableState extends State<CherrypickTable> {
@@ -242,7 +242,7 @@ class RepoInfoExpansion extends StatefulWidget {
   final Map<String, Object> currentStatus;
 
   @override
-  RepoInfoExpansionState createState() => RepoInfoExpansionState();
+  State<RepoInfoExpansion> createState() => RepoInfoExpansionState();
 }
 
 class RepoInfoExpansionState extends State<RepoInfoExpansion> {

dev/conductor/ui/lib/widgets/create_release_substeps.dart

@@ -0,0 +1,184 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter/material.dart';
+
+/// Displays all substeps related to the 1st step.
+///
+/// Uses input fields and dropdowns to capture all the parameters of the conductor start command.
+class CreateReleaseSubsteps extends StatefulWidget {
+  const CreateReleaseSubsteps({
+    Key? key,
+    required this.nextStep,
+  }) : super(key: key);
+
+  final VoidCallback nextStep;
+
+  @override
+  State<CreateReleaseSubsteps> createState() => CreateReleaseSubstepsState();
+
+  static const List<String> substepTitles = <String>[
+    'Candidate Branch',
+    'Release Channel',
+    'Framework Mirror',
+    'Engine Mirror',
+    'Engine Cherrypicks (if necessary)',
+    'Framework Cherrypicks (if necessary)',
+    'Dart Revision (if necessary)',
+    'Increment',
+  ];
+}
+
+class CreateReleaseSubstepsState extends State<CreateReleaseSubsteps> {
+  // Initialize a public state so it could be accessed in the test file.
+  @visibleForTesting
+  late Map<String, String?> releaseData = <String, String?>{};
+
+  /// Updates the corresponding [field] in [releaseData] with [data].
+  void setReleaseData(String field, String data) {
+    setState(() {
+      releaseData = <String, String?>{
+        ...releaseData,
+        field: data,
+      };
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: <Widget>[
+        InputAsSubstep(
+          index: 0,
+          setReleaseData: setReleaseData,
+          hintText: 'The candidate branch the release will be based on.',
+        ),
+        CheckboxListTileDropdown(
+          index: 1,
+          releaseData: releaseData,
+          setReleaseData: setReleaseData,
+          options: const <String>['dev', 'beta', 'stable'],
+        ),
+        InputAsSubstep(
+          index: 2,
+          setReleaseData: setReleaseData,
+          hintText: "Git remote of the Conductor user's Framework repository mirror.",
+        ),
+        InputAsSubstep(
+          index: 3,
+          setReleaseData: setReleaseData,
+          hintText: "Git remote of the Conductor user's Engine repository mirror.",
+        ),
+        InputAsSubstep(
+          index: 4,
+          setReleaseData: setReleaseData,
+          hintText: 'Engine cherrypick hashes to be applied. Multiple hashes delimited by a comma, no spaces.',
+        ),
+        InputAsSubstep(
+          index: 5,
+          setReleaseData: setReleaseData,
+          hintText: 'Framework cherrypick hashes to be applied. Multiple hashes delimited by a comma, no spaces.',
+        ),
+        InputAsSubstep(
+          index: 6,
+          setReleaseData: setReleaseData,
+          hintText: 'New Dart revision to cherrypick.',
+        ),
+        CheckboxListTileDropdown(
+          index: 7,
+          releaseData: releaseData,
+          setReleaseData: setReleaseData,
+          options: const <String>['y', 'z', 'm', 'n'],
+        ),
+        const SizedBox(height: 20.0),
+        Center(
+          // TODO(Yugue): Add regex validation for each parameter input
+          // before Continue button is enabled, https://github.com/flutter/flutter/issues/91925.
+          child: ElevatedButton(
+            key: const Key('step1continue'),
+            onPressed: () {
+              widget.nextStep();
+            },
+            child: const Text('Continue'),
+          ),
+        ),
+      ],
+    );
+  }
+}
+
+typedef SetReleaseData = void Function(String name, String data);
+
+/// Captures the input values and updates the corresponding field in [releaseData].
+class InputAsSubstep extends StatelessWidget {
+  const InputAsSubstep({
+    Key? key,
+    required this.index,
+    required this.setReleaseData,
+    this.hintText,
+  }) : super(key: key);
+
+  final int index;
+  final SetReleaseData setReleaseData;
+  final String? hintText;
+
+  @override
+  Widget build(BuildContext context) {
+    return TextFormField(
+      key: Key(CreateReleaseSubsteps.substepTitles[index]),
+      decoration: InputDecoration(
+        labelText: CreateReleaseSubsteps.substepTitles[index],
+        hintText: hintText,
+      ),
+      onChanged: (String data) {
+        setReleaseData(CreateReleaseSubsteps.substepTitles[index], data);
+      },
+    );
+  }
+}
+
+/// Captures the chosen option and updates the corresponding field in [releaseData].
+class CheckboxListTileDropdown extends StatelessWidget {
+  const CheckboxListTileDropdown({
+    Key? key,
+    required this.index,
+    required this.releaseData,
+    required this.setReleaseData,
+    required this.options,
+  }) : super(key: key);
+
+  final int index;
+  final Map<String, String?> releaseData;
+  final SetReleaseData setReleaseData;
+  final List<String> options;
+
+  @override
+  Widget build(BuildContext context) {
+    return Row(
+      children: <Widget>[
+        Text(
+          CreateReleaseSubsteps.substepTitles[index],
+          style: Theme.of(context).textTheme.subtitle1!.copyWith(color: Colors.grey[700]),
+        ),
+        const SizedBox(width: 20.0),
+        DropdownButton<String>(
+          hint: const Text('-'), // Dropdown initially displays the hint when no option is selected.
+          key: Key(CreateReleaseSubsteps.substepTitles[index]),
+          value: releaseData[CreateReleaseSubsteps.substepTitles[index]],
+          icon: const Icon(Icons.arrow_downward),
+          items: options.map<DropdownMenuItem<String>>((String value) {
+            return DropdownMenuItem<String>(
+              value: value,
+              child: Text(value),
+            );
+          }).toList(),
+          onChanged: (String? newValue) {
+            setReleaseData(CreateReleaseSubsteps.substepTitles[index], newValue!);
+          },
+        ),
+      ],
+    );
+  }
+}

dev/conductor/ui/lib/widgets/progression.dart

@@ -6,6 +6,7 @@ import 'package:conductor_core/proto.dart' as pb;
 import 'package:flutter/material.dart';
 
 import 'conductor_status.dart';
+import 'create_release_substeps.dart';
 import 'substeps.dart';
 
 /// Displays the progression and each step of the release from the conductor.
@@ -23,7 +24,7 @@ class MainProgression extends StatefulWidget {
   final String stateFilePath;
 
   @override
-  MainProgressionState createState() => MainProgressionState();
+  State<MainProgression> createState() => MainProgressionState();
 
   static const List<String> _stepTitles = <String>[
     'Initialize a New Flutter Release',
@@ -85,7 +86,7 @@ class MainProgressionState extends State<MainProgression> {
                   title: Text(MainProgression._stepTitles[0]),
                   content: Column(
                     children: <Widget>[
-                      ConductorSubsteps(nextStep: nextStep),
+                      CreateReleaseSubsteps(nextStep: nextStep),
                     ],
                   ),
                   isActive: true,

dev/conductor/ui/lib/widgets/substeps.dart

@@ -16,7 +16,7 @@ class ConductorSubsteps extends StatefulWidget {
   final VoidCallback nextStep;
 
   @override
-  ConductorSubstepsState createState() => ConductorSubstepsState();
+  State<ConductorSubsteps> createState() => ConductorSubstepsState();
 
   static const List<String> _substepTitles = <String>[
     'Substep 1',

dev/conductor/ui/test/widgets/create_release_substeps_test.dart

@@ -0,0 +1,78 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:conductor_ui/widgets/create_release_substeps.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  testWidgets('Widget should save all parameters correctly', (WidgetTester tester) async {
+    const String candidateBranch = 'flutter-1.2-candidate.3';
+    const String releaseChannel = 'dev';
+    const String frameworkMirror = 'git@github.com:test/flutter.git';
+    const String engineMirror = 'git@github.com:test/engine.git';
+    const String engineCherrypick = 'a5a25cd702b062c24b2c67b8d30b5cb33e0ef6f0,94d06a2e1d01a3b0c693b94d70c5e1df9d78d249';
+    const String frameworkCherrypick = '768cd702b691584b2c67b8d30b5cb33e0ef6f0';
+    const String dartRevision = 'fe9708ab688dcda9923f584ba370a66fcbc3811f';
+    const String increment = 'y';
+
+    await tester.pumpWidget(
+      StatefulBuilder(
+        builder: (BuildContext context, StateSetter setState) {
+          return MaterialApp(
+            home: Material(
+              child: ListView(
+                children: <Widget>[
+                  CreateReleaseSubsteps(
+                    nextStep: () {},
+                  ),
+                ],
+              ),
+            ),
+          );
+        },
+      ),
+    );
+
+    await tester.enterText(find.byKey(const Key('Candidate Branch')), candidateBranch);
+
+    final StatefulElement createReleaseSubsteps = tester.element(find.byType(CreateReleaseSubsteps));
+    final CreateReleaseSubstepsState createReleaseSubstepsState =
+        createReleaseSubsteps.state as CreateReleaseSubstepsState;
+
+    /// Tests the Release Channel dropdown menu.
+    await tester.tap(find.byKey(const Key('Release Channel')));
+    await tester.pumpAndSettle(); // finish the menu animation
+    expect(createReleaseSubstepsState.releaseData['Release Channel'], equals(null));
+    await tester.tap(find.text(releaseChannel).last);
+    await tester.pumpAndSettle(); // finish the menu animation
+
+    await tester.enterText(find.byKey(const Key('Framework Mirror')), frameworkMirror);
+    await tester.enterText(find.byKey(const Key('Engine Mirror')), engineMirror);
+    await tester.enterText(find.byKey(const Key('Engine Cherrypicks (if necessary)')), engineCherrypick);
+    await tester.enterText(find.byKey(const Key('Framework Cherrypicks (if necessary)')), frameworkCherrypick);
+    await tester.enterText(find.byKey(const Key('Dart Revision (if necessary)')), dartRevision);
+
+    /// Tests the Increment dropdown menu.
+    await tester.tap(find.byKey(const Key('Increment')));
+    await tester.pumpAndSettle(); // finish the menu animation
+    expect(createReleaseSubstepsState.releaseData['Increment'], equals(null));
+    await tester.tap(find.text(increment).last);
+    await tester.pumpAndSettle(); // finish the menu animation
+
+    expect(
+        createReleaseSubstepsState.releaseData,
+        equals(<String, String>{
+          'Candidate Branch': candidateBranch,
+          'Release Channel': releaseChannel,
+          'Framework Mirror': frameworkMirror,
+          'Engine Mirror': engineMirror,
+          'Engine Cherrypicks (if necessary)': engineCherrypick,
+          'Framework Cherrypicks (if necessary)': frameworkCherrypick,
+          'Dart Revision (if necessary)': dartRevision,
+          'Increment': increment,
+        }));
+  });
+}

dev/conductor/ui/test/widgets/stepper_test.dart

@@ -7,50 +7,6 @@ import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 void main() {
-  testWidgets(
-      'All substeps of the current step must be checked before able to continue to the next step',
-      (WidgetTester tester) async {
-    await tester.pumpWidget(
-      StatefulBuilder(
-        builder: (BuildContext context, StateSetter setState) {
-          return MaterialApp(
-            home: Material(
-              child: Column(
-                children: const <Widget>[
-                  MainProgression(
-                    stateFilePath: './testPath',
-                  ),
-                ],
-              ),
-            ),
-          );
-        },
-      ),
-    );
-
-    expect(find.byType(Stepper), findsOneWidget);
-    expect(find.text('Initialize a New Flutter Release'), findsOneWidget);
-    expect(find.text('Continue'), findsNWidgets(0));
-
-    await tester.tap(find.text('Substep 1').first);
-    await tester.tap(find.text('Substep 2').first);
-    await tester.pumpAndSettle();
-    expect(find.text('Continue'), findsNWidgets(0));
-
-    await tester.tap(find.text('Substep 3').first);
-    await tester.pumpAndSettle();
-    expect(find.text('Continue'), findsOneWidget);
-    expect(tester.widget<Stepper>(find.byType(Stepper)).steps[0].state, equals(StepState.indexed));
-    expect(tester.widget<Stepper>(find.byType(Stepper)).steps[1].state, equals(StepState.disabled));
-
-    await tester.tap(find.text('Continue'));
-    await tester.pumpAndSettle();
-    expect(tester.widget<Stepper>(find.byType(Stepper)).steps[0].state,
-        equals(StepState.complete));
-    expect(tester.widget<Stepper>(find.byType(Stepper)).steps[1].state,
-        equals(StepState.indexed));
-  });
-
   testWidgets('When user clicks on a previously completed step, Stepper does not navigate back.',
       (WidgetTester tester) async {
     await tester.pumpWidget(
@@ -71,11 +27,10 @@ void main() {
       ),
     );
 
-    await tester.tap(find.text('Substep 1').first);
-    await tester.tap(find.text('Substep 2').first);
-    await tester.tap(find.text('Substep 3').first);
-    await tester.pumpAndSettle();
+    expect(tester.widget<Stepper>(find.byType(Stepper)).currentStep, equals(0));
+
     await tester.tap(find.text('Continue'));
+    await tester.pumpAndSettle();
     await tester.tap(find.text('Initialize a New Flutter Release'));
     await tester.pumpAndSettle();