actions_test.dart 64.2 KB
Newer Older
Ian Hickson's avatar
Ian Hickson committed
1
// Copyright 2014 The Flutter Authors. All rights reserved.
2 3 4 5
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/foundation.dart';
6
import 'package:flutter/gestures.dart';
7
import 'package:flutter/material.dart';
8
import 'package:flutter/rendering.dart';
9
import 'package:flutter/services.dart';
10 11 12 13
import 'package:flutter_test/flutter_test.dart';

void main() {
  group(ActionDispatcher, () {
14 15
    testWidgets('ActionDispatcher invokes actions when asked.', (WidgetTester tester) async {
      await tester.pumpWidget(Container());
16 17
      bool invoked = false;
      const ActionDispatcher dispatcher = ActionDispatcher();
18
      final Object? result = dispatcher.invokeAction(
19
        TestAction(
20
          onInvoke: (Intent intent) {
21
            invoked = true;
22
            return invoked;
23 24
          },
        ),
25
        const TestIntent(),
26 27 28 29 30 31
      );
      expect(result, isTrue);
      expect(invoked, isTrue);
    });
  });
  group(Actions, () {
32 33 34
    Intent? invokedIntent;
    Action<Intent>? invokedAction;
    ActionDispatcher? invokedDispatcher;
35

36
    void collect({Action<Intent>? action, Intent? intent, ActionDispatcher? dispatcher}) {
37 38 39 40 41 42 43 44 45 46 47 48 49
      invokedIntent = intent;
      invokedAction = action;
      invokedDispatcher = dispatcher;
    }

    void clear() {
      invokedIntent = null;
      invokedAction = null;
      invokedDispatcher = null;
    }

    setUp(clear);

50
    testWidgets('Actions widget can invoke actions with default dispatcher', (WidgetTester tester) async {
51 52 53 54 55
      final GlobalKey containerKey = GlobalKey();
      bool invoked = false;

      await tester.pumpWidget(
        Actions(
56 57 58 59 60 61 62
          actions: <Type, Action<Intent>>{
            TestIntent: TestAction(
              onInvoke: (Intent intent) {
                invoked = true;
                return invoked;
              },
            ),
63 64 65 66 67 68
          },
          child: Container(key: containerKey),
        ),
      );

      await tester.pump();
69 70
      final Object? result = Actions.invoke(
        containerKey.currentContext!,
71
        const TestIntent(),
72 73 74 75
      );
      expect(result, isTrue);
      expect(invoked, isTrue);
    });
76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122
    testWidgets('Actions widget can invoke actions with default dispatcher and maybeInvoke', (WidgetTester tester) async {
      final GlobalKey containerKey = GlobalKey();
      bool invoked = false;

      await tester.pumpWidget(
        Actions(
          actions: <Type, Action<Intent>>{
            TestIntent: TestAction(
              onInvoke: (Intent intent) {
                invoked = true;
                return invoked;
              },
            ),
          },
          child: Container(key: containerKey),
        ),
      );

      await tester.pump();
      final Object? result = Actions.maybeInvoke(
        containerKey.currentContext!,
        const TestIntent(),
      );
      expect(result, isTrue);
      expect(invoked, isTrue);
    });
    testWidgets('maybeInvoke returns null when no action is found', (WidgetTester tester) async {
      final GlobalKey containerKey = GlobalKey();
      bool invoked = false;

      await tester.pumpWidget(
        Actions(
          actions: <Type, Action<Intent>>{
            TestIntent: TestAction(
              onInvoke: (Intent intent) {
                invoked = true;
                return invoked;
              },
            ),
          },
          child: Container(key: containerKey),
        ),
      );

      await tester.pump();
      final Object? result = Actions.maybeInvoke(
        containerKey.currentContext!,
123
        const DoNothingIntent(),
124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148
      );
      expect(result, isNull);
      expect(invoked, isFalse);
    });
    testWidgets('invoke throws when no action is found', (WidgetTester tester) async {
      final GlobalKey containerKey = GlobalKey();
      bool invoked = false;

      await tester.pumpWidget(
        Actions(
          actions: <Type, Action<Intent>>{
            TestIntent: TestAction(
              onInvoke: (Intent intent) {
                invoked = true;
                return invoked;
              },
            ),
          },
          child: Container(key: containerKey),
        ),
      );

      await tester.pump();
      final Object? result = Actions.maybeInvoke(
        containerKey.currentContext!,
149
        const DoNothingIntent(),
150 151 152 153
      );
      expect(result, isNull);
      expect(invoked, isFalse);
    });
154
    testWidgets('Actions widget can invoke actions with custom dispatcher', (WidgetTester tester) async {
155 156
      final GlobalKey containerKey = GlobalKey();
      bool invoked = false;
157 158 159
      const TestIntent intent = TestIntent();
      final Action<Intent> testAction = TestAction(
        onInvoke: (Intent intent) {
160
          invoked = true;
161
          return invoked;
162 163 164 165 166 167
        },
      );

      await tester.pumpWidget(
        Actions(
          dispatcher: TestDispatcher(postInvoke: collect),
168 169
          actions: <Type, Action<Intent>>{
            TestIntent: testAction,
170 171 172 173 174 175
          },
          child: Container(key: containerKey),
        ),
      );

      await tester.pump();
176 177
      final Object? result = Actions.invoke<TestIntent>(
        containerKey.currentContext!,
178 179 180 181 182 183
        intent,
      );
      expect(result, isTrue);
      expect(invoked, isTrue);
      expect(invokedIntent, equals(intent));
    });
184
    testWidgets('Actions can invoke actions in ancestor dispatcher', (WidgetTester tester) async {
185 186
      final GlobalKey containerKey = GlobalKey();
      bool invoked = false;
187 188 189
      const TestIntent intent = TestIntent();
      final Action<Intent> testAction = TestAction(
        onInvoke: (Intent intent) {
190
          invoked = true;
191
          return invoked;
192 193 194 195 196 197
        },
      );

      await tester.pumpWidget(
        Actions(
          dispatcher: TestDispatcher1(postInvoke: collect),
198 199
          actions: <Type, Action<Intent>>{
            TestIntent: testAction,
200 201 202
          },
          child: Actions(
            dispatcher: TestDispatcher(postInvoke: collect),
203
            actions: const <Type, Action<Intent>>{},
204 205 206 207 208 209
            child: Container(key: containerKey),
          ),
        ),
      );

      await tester.pump();
210 211
      final Object? result = Actions.invoke<TestIntent>(
        containerKey.currentContext!,
212 213 214 215 216 217 218 219
        intent,
      );
      expect(result, isTrue);
      expect(invoked, isTrue);
      expect(invokedIntent, equals(intent));
      expect(invokedAction, equals(testAction));
      expect(invokedDispatcher.runtimeType, equals(TestDispatcher1));
    });
220
    testWidgets("Actions can invoke actions in ancestor dispatcher if a lower one isn't specified", (WidgetTester tester) async {
221 222
      final GlobalKey containerKey = GlobalKey();
      bool invoked = false;
223 224 225
      const TestIntent intent = TestIntent();
      final Action<Intent> testAction = TestAction(
        onInvoke: (Intent intent) {
226
          invoked = true;
227
          return invoked;
228 229 230 231 232 233
        },
      );

      await tester.pumpWidget(
        Actions(
          dispatcher: TestDispatcher1(postInvoke: collect),
234 235
          actions: <Type, Action<Intent>>{
            TestIntent: testAction,
236 237
          },
          child: Actions(
238
            actions: const <Type, Action<Intent>>{},
239 240 241 242 243 244
            child: Container(key: containerKey),
          ),
        ),
      );

      await tester.pump();
245 246
      final Object? result = Actions.invoke<TestIntent>(
        containerKey.currentContext!,
247 248 249 250 251 252 253 254
        intent,
      );
      expect(result, isTrue);
      expect(invoked, isTrue);
      expect(invokedIntent, equals(intent));
      expect(invokedAction, equals(testAction));
      expect(invokedDispatcher.runtimeType, equals(TestDispatcher1));
    });
255
    testWidgets('Actions widget can be found with of', (WidgetTester tester) async {
256 257 258 259 260 261
      final GlobalKey containerKey = GlobalKey();
      final ActionDispatcher testDispatcher = TestDispatcher1(postInvoke: collect);

      await tester.pumpWidget(
        Actions(
          dispatcher: testDispatcher,
262
          actions: const <Type, Action<Intent>>{},
263 264 265 266 267
          child: Container(key: containerKey),
        ),
      );

      await tester.pump();
268
      final ActionDispatcher dispatcher = Actions.of(containerKey.currentContext!);
269 270
      expect(dispatcher, equals(testDispatcher));
    });
271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294
    testWidgets('Action can be found with find', (WidgetTester tester) async {
      final GlobalKey containerKey = GlobalKey();
      final ActionDispatcher testDispatcher = TestDispatcher1(postInvoke: collect);
      bool invoked = false;
      final TestAction testAction = TestAction(
        onInvoke: (Intent intent) {
          invoked = true;
          return invoked;
        },
      );
      await tester.pumpWidget(
        Actions(
          dispatcher: testDispatcher,
          actions: <Type, Action<Intent>>{
            TestIntent: testAction,
          },
          child: Actions(
            actions: const <Type, Action<Intent>>{},
            child: Container(key: containerKey),
          ),
        ),
      );

      await tester.pump();
295 296
      expect(Actions.find<TestIntent>(containerKey.currentContext!), equals(testAction));
      expect(() => Actions.find<DoNothingIntent>(containerKey.currentContext!), throwsAssertionError);
297
      expect(Actions.maybeFind<DoNothingIntent>(containerKey.currentContext!), isNull);
298 299 300 301 302 303 304

      await tester.pumpWidget(
        Actions(
          dispatcher: testDispatcher,
          actions: <Type, Action<Intent>>{
            TestIntent: testAction,
          },
305 306 307
          child: Actions(
            actions: const <Type, Action<Intent>>{},
            child: Container(key: containerKey),
308 309 310 311 312
          ),
        ),
      );

      await tester.pump();
313 314
      expect(Actions.find<TestIntent>(containerKey.currentContext!), equals(testAction));
      expect(() => Actions.find<DoNothingIntent>(containerKey.currentContext!), throwsAssertionError);
315
      expect(Actions.maybeFind<DoNothingIntent>(containerKey.currentContext!), isNull);
316
    });
317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340
    testWidgets('FocusableActionDetector keeps track of focus and hover even when disabled.', (WidgetTester tester) async {
      FocusManager.instance.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
      final GlobalKey containerKey = GlobalKey();
      bool invoked = false;
      const Intent intent = TestIntent();
      final FocusNode focusNode = FocusNode(debugLabel: 'Test Node');
      final Action<Intent> testAction = TestAction(
        onInvoke: (Intent intent) {
          invoked = true;
          return invoked;
        },
      );
      bool hovering = false;
      bool focusing = false;

      Future<void> buildTest(bool enabled) async {
        await tester.pumpWidget(
          Center(
            child: Actions(
              dispatcher: TestDispatcher1(postInvoke: collect),
              actions: const <Type, Action<Intent>>{},
              child: FocusableActionDetector(
                enabled: enabled,
                focusNode: focusNode,
341 342
                shortcuts: const <ShortcutActivator, Intent>{
                  SingleActivator(LogicalKeyboardKey.enter): intent,
343 344 345 346 347 348
                },
                actions: <Type, Action<Intent>>{
                  TestIntent: testAction,
                },
                onShowHoverHighlight: (bool value) => hovering = value,
                onShowFocusHighlight: (bool value) => focusing = value,
349
                child: SizedBox(width: 100, height: 100, key: containerKey),
350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401
              ),
            ),
          ),
        );
        return tester.pump();
      }

      await buildTest(true);
      focusNode.requestFocus();
      await tester.pump();
      final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
      await gesture.moveTo(tester.getCenter(find.byKey(containerKey)));
      await tester.pump();
      await tester.sendKeyEvent(LogicalKeyboardKey.enter);
      expect(hovering, isTrue);
      expect(focusing, isTrue);
      expect(invoked, isTrue);

      invoked = false;
      await buildTest(false);
      expect(hovering, isFalse);
      expect(focusing, isFalse);
      await tester.sendKeyEvent(LogicalKeyboardKey.enter);
      await tester.pump();
      expect(invoked, isFalse);
      await buildTest(true);
      expect(focusing, isFalse);
      expect(hovering, isTrue);
      await buildTest(false);
      expect(focusing, isFalse);
      expect(hovering, isFalse);
      await gesture.moveTo(Offset.zero);
      await buildTest(true);
      expect(hovering, isFalse);
      expect(focusing, isFalse);
    });
    testWidgets('FocusableActionDetector changes mouse cursor when hovered', (WidgetTester tester) async {
      await tester.pumpWidget(
        MouseRegion(
          cursor: SystemMouseCursors.forbidden,
          child: FocusableActionDetector(
            mouseCursor: SystemMouseCursors.text,
            onShowHoverHighlight: (_) {},
            onShowFocusHighlight: (_) {},
            child: Container(),
          ),
        ),
      );
      final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse, pointer: 1);
      await gesture.addPointer(location: const Offset(1, 1));
      await tester.pump();

402
      expect(RendererBinding.instance.mouseTracker.debugDeviceActiveCursor(1), SystemMouseCursors.text);
403 404 405 406 407 408 409 410 411 412 413 414 415

      // Test default
      await tester.pumpWidget(
        MouseRegion(
          cursor: SystemMouseCursors.forbidden,
          child: FocusableActionDetector(
            onShowHoverHighlight: (_) {},
            onShowFocusHighlight: (_) {},
            child: Container(),
          ),
        ),
      );

416
      expect(RendererBinding.instance.mouseTracker.debugDeviceActiveCursor(1), SystemMouseCursors.forbidden);
417
    });
418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440
    testWidgets('Actions.invoke returns the value of Action.invoke', (WidgetTester tester) async {
      final GlobalKey containerKey = GlobalKey();
      final Object sentinel = Object();
      bool invoked = false;
      const TestIntent intent = TestIntent();
      final Action<Intent> testAction = TestAction(
        onInvoke: (Intent intent) {
          invoked = true;
          return sentinel;
        },
      );

      await tester.pumpWidget(
        Actions(
          dispatcher: TestDispatcher(postInvoke: collect),
          actions: <Type, Action<Intent>>{
            TestIntent: testAction,
          },
          child: Container(key: containerKey),
        ),
      );

      await tester.pump();
441 442
      final Object? result = Actions.invoke<TestIntent>(
        containerKey.currentContext!,
443 444 445 446 447
        intent,
      );
      expect(identical(result, sentinel), isTrue);
      expect(invoked, isTrue);
    });
448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473
    testWidgets('ContextAction can return null', (WidgetTester tester) async {
      final GlobalKey containerKey = GlobalKey();
      const TestIntent intent = TestIntent();
      final TestContextAction testAction = TestContextAction();

      await tester.pumpWidget(
        Actions(
          dispatcher: TestDispatcher1(postInvoke: collect),
          actions: <Type, Action<Intent>>{
            TestIntent: testAction,
          },
          child: Container(key: containerKey),
        ),
      );

      await tester.pump();
      final Object? result = Actions.invoke<TestIntent>(
        containerKey.currentContext!,
        intent,
      );
      expect(result, isNull);
      expect(invokedIntent, equals(intent));
      expect(invokedAction, equals(testAction));
      expect(invokedDispatcher.runtimeType, equals(TestDispatcher1));
      expect(testAction.capturedContexts.single, containerKey.currentContext);
    });
474
    testWidgets('Disabled actions stop propagation to an ancestor', (WidgetTester tester) async {
475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513
      final GlobalKey containerKey = GlobalKey();
      bool invoked = false;
      const TestIntent intent = TestIntent();
      final TestAction enabledTestAction = TestAction(
        onInvoke: (Intent intent) {
          invoked = true;
          return invoked;
        },
      );
      enabledTestAction.enabled = true;
      final TestAction disabledTestAction = TestAction(
        onInvoke: (Intent intent) {
          invoked = true;
          return invoked;
        },
      );
      disabledTestAction.enabled = false;

      await tester.pumpWidget(
        Actions(
          dispatcher: TestDispatcher1(postInvoke: collect),
          actions: <Type, Action<Intent>>{
            TestIntent: enabledTestAction,
          },
          child: Actions(
            dispatcher: TestDispatcher(postInvoke: collect),
            actions: <Type, Action<Intent>>{
              TestIntent: disabledTestAction,
            },
            child: Container(key: containerKey),
          ),
        ),
      );

      await tester.pump();
      final Object? result = Actions.invoke<TestIntent>(
        containerKey.currentContext!,
        intent,
      );
514 515 516 517 518
      expect(result, isNull);
      expect(invoked, isFalse);
      expect(invokedIntent, isNull);
      expect(invokedAction, isNull);
      expect(invokedDispatcher, isNull);
519
    });
520
  });
521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546

  group('Listening', () {
    testWidgets('can listen to enabled state of Actions', (WidgetTester tester) async {
      final GlobalKey containerKey = GlobalKey();
      bool invoked1 = false;
      bool invoked2 = false;
      bool invoked3 = false;
      final TestAction action1 = TestAction(
        onInvoke: (Intent intent) {
          invoked1 = true;
          return invoked1;
        },
      );
      final TestAction action2 = TestAction(
        onInvoke: (Intent intent) {
          invoked2 = true;
          return invoked2;
        },
      );
      final TestAction action3 = TestAction(
        onInvoke: (Intent intent) {
          invoked3 = true;
          return invoked3;
        },
      );
      bool enabled1 = true;
547
      action1.addActionListener((Action<Intent> action) => enabled1 = action.isEnabled(const TestIntent()));
548 549 550 551
      action1.enabled = false;
      expect(enabled1, isFalse);

      bool enabled2 = true;
552
      action2.addActionListener((Action<Intent> action) => enabled2 = action.isEnabled(const SecondTestIntent()));
553 554 555 556
      action2.enabled = false;
      expect(enabled2, isFalse);

      bool enabled3 = true;
557
      action3.addActionListener((Action<Intent> action) => enabled3 = action.isEnabled(const ThirdTestIntent()));
558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575
      action3.enabled = false;
      expect(enabled3, isFalse);

      await tester.pumpWidget(
        Actions(
          actions: <Type, Action<TestIntent>>{
            TestIntent: action1,
            SecondTestIntent: action2,
          },
          child: Actions(
            actions: <Type, Action<TestIntent>>{
              ThirdTestIntent: action3,
            },
            child: Container(key: containerKey),
          ),
        ),
      );

576
      Object? result = Actions.maybeInvoke(
577
        containerKey.currentContext!,
578 579 580
        const TestIntent(),
      );
      expect(enabled1, isFalse);
581
      expect(result, isNull);
582 583 584 585
      expect(invoked1, isFalse);

      action1.enabled = true;
      result = Actions.invoke(
586
        containerKey.currentContext!,
587 588 589 590 591 592
        const TestIntent(),
      );
      expect(enabled1, isTrue);
      expect(result, isTrue);
      expect(invoked1, isTrue);

593
      bool? enabledChanged;
594 595 596 597 598 599 600
      await tester.pumpWidget(
        Actions(
          actions: <Type, Action<Intent>>{
            TestIntent: action1,
            SecondTestIntent: action2,
          },
          child: ActionListener(
601
            listener: (Action<Intent> action) => enabledChanged = action.isEnabled(const ThirdTestIntent()),
602 603 604 605 606 607 608 609 610 611 612 613
            action: action2,
            child: Actions(
              actions: <Type, Action<Intent>>{
                ThirdTestIntent: action3,
              },
              child: Container(key: containerKey),
            ),
          ),
        ),
      );

      await tester.pump();
614
      result = Actions.maybeInvoke<TestIntent>(
615
        containerKey.currentContext!,
616 617 618 619
        const SecondTestIntent(),
      );
      expect(enabledChanged, isNull);
      expect(enabled2, isFalse);
620
      expect(result, isNull);
621 622 623 624 625
      expect(invoked2, isFalse);

      action2.enabled = true;
      expect(enabledChanged, isTrue);
      result = Actions.invoke<TestIntent>(
626
        containerKey.currentContext!,
627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686
        const SecondTestIntent(),
      );
      expect(enabled2, isTrue);
      expect(result, isTrue);
      expect(invoked2, isTrue);

      await tester.pumpWidget(
        Actions(
          actions: <Type, Action<Intent>>{
            TestIntent: action1,
          },
          child: Actions(
            actions: <Type, Action<Intent>>{
              ThirdTestIntent: action3,
            },
            child: Container(key: containerKey),
          ),
        ),
      );

      expect(action1.listeners.length, equals(2));
      expect(action2.listeners.length, equals(1));
      expect(action3.listeners.length, equals(2));

      await tester.pumpWidget(
        Actions(
          actions: <Type, Action<Intent>>{
            TestIntent: action1,
            ThirdTestIntent: action3,
          },
          child: Container(key: containerKey),
        ),
      );

      expect(action1.listeners.length, equals(2));
      expect(action2.listeners.length, equals(1));
      expect(action3.listeners.length, equals(2));

      await tester.pumpWidget(
        Actions(
          actions: <Type, Action<Intent>>{
            TestIntent: action1,
          },
          child: Container(key: containerKey),
        ),
      );

      expect(action1.listeners.length, equals(2));
      expect(action2.listeners.length, equals(1));
      expect(action3.listeners.length, equals(1));

      await tester.pumpWidget(Container());
      await tester.pump();

      expect(action1.listeners.length, equals(1));
      expect(action2.listeners.length, equals(1));
      expect(action3.listeners.length, equals(1));
    });
  });

687 688
  group(FocusableActionDetector, () {
    const Intent intent = TestIntent();
689 690 691 692 693
    late bool invoked;
    late bool hovering;
    late bool focusing;
    late FocusNode focusNode;
    late Action<Intent> testAction;
694 695 696 697 698

    Future<void> pumpTest(
        WidgetTester tester, {
          bool enabled = true,
          bool directional = false,
699
          bool supplyCallbacks = true,
700
          required Key key,
701 702 703 704 705 706 707 708 709 710 711 712 713
        }) async {
      await tester.pumpWidget(
        MediaQuery(
          data: MediaQueryData(
            navigationMode: directional ? NavigationMode.directional : NavigationMode.traditional,
          ),
          child: Center(
            child: Actions(
              dispatcher: const TestDispatcher1(),
              actions: const <Type, Action<Intent>>{},
              child: FocusableActionDetector(
                enabled: enabled,
                focusNode: focusNode,
714 715
                shortcuts: const <ShortcutActivator, Intent>{
                  SingleActivator(LogicalKeyboardKey.enter): intent,
716 717 718 719
                },
                actions: <Type, Action<Intent>>{
                  TestIntent: testAction,
                },
720 721
                onShowHoverHighlight: supplyCallbacks ? (bool value) => hovering = value : null,
                onShowFocusHighlight: supplyCallbacks ? (bool value) => focusing = value : null,
722
                child: SizedBox(width: 100, height: 100, key: key),
723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748
              ),
            ),
          ),
        ),
      );
      return tester.pump();
    }

    setUp(() async {
      invoked = false;
      hovering = false;
      focusing = false;

      focusNode = FocusNode(debugLabel: 'Test Node');
      testAction = TestAction(
        onInvoke: (Intent intent) {
          invoked = true;
          return invoked;
        },
      );
    });

    testWidgets('FocusableActionDetector keeps track of focus and hover even when disabled.', (WidgetTester tester) async {
      FocusManager.instance.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
      final GlobalKey containerKey = GlobalKey();

749
      await pumpTest(tester, key: containerKey);
750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766
      focusNode.requestFocus();
      await tester.pump();
      final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
      await gesture.moveTo(tester.getCenter(find.byKey(containerKey)));
      await tester.pump();
      await tester.sendKeyEvent(LogicalKeyboardKey.enter);
      expect(hovering, isTrue);
      expect(focusing, isTrue);
      expect(invoked, isTrue);

      invoked = false;
      await pumpTest(tester, enabled: false, key: containerKey);
      expect(hovering, isFalse);
      expect(focusing, isFalse);
      await tester.sendKeyEvent(LogicalKeyboardKey.enter);
      await tester.pump();
      expect(invoked, isFalse);
767
      await pumpTest(tester, key: containerKey);
768 769 770 771 772 773
      expect(focusing, isFalse);
      expect(hovering, isTrue);
      await pumpTest(tester, enabled: false, key: containerKey);
      expect(focusing, isFalse);
      expect(hovering, isFalse);
      await gesture.moveTo(Offset.zero);
774
      await pumpTest(tester, key: containerKey);
775 776 777 778 779 780 781
      expect(hovering, isFalse);
      expect(focusing, isFalse);
    });
    testWidgets('FocusableActionDetector shows focus highlight appropriately when focused and disabled', (WidgetTester tester) async {
      FocusManager.instance.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
      final GlobalKey containerKey = GlobalKey();

782
      await pumpTest(tester, key: containerKey);
783 784 785
      await tester.pump();
      expect(focusing, isFalse);

786
      await pumpTest(tester, key: containerKey);
787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807
      focusNode.requestFocus();
      await tester.pump();
      expect(focusing, isTrue);

      focusing = false;
      await pumpTest(tester, enabled: false, key: containerKey);
      focusNode.requestFocus();
      await tester.pump();
      expect(focusing, isFalse);

      await pumpTest(tester, enabled: false, key: containerKey);
      focusNode.requestFocus();
      await tester.pump();
      expect(focusing, isFalse);

      // In directional navigation, focus should show, even if disabled.
      await pumpTest(tester, enabled: false, key: containerKey, directional: true);
      focusNode.requestFocus();
      await tester.pump();
      expect(focusing, isTrue);
    });
808 809 810 811
    testWidgets('FocusableActionDetector can be used without callbacks', (WidgetTester tester) async {
      FocusManager.instance.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
      final GlobalKey containerKey = GlobalKey();

812
      await pumpTest(tester, key: containerKey, supplyCallbacks: false);
813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829
      focusNode.requestFocus();
      await tester.pump();
      final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
      await gesture.moveTo(tester.getCenter(find.byKey(containerKey)));
      await tester.pump();
      await tester.sendKeyEvent(LogicalKeyboardKey.enter);
      expect(hovering, isFalse);
      expect(focusing, isFalse);
      expect(invoked, isTrue);

      invoked = false;
      await pumpTest(tester, enabled: false, key: containerKey, supplyCallbacks: false);
      expect(hovering, isFalse);
      expect(focusing, isFalse);
      await tester.sendKeyEvent(LogicalKeyboardKey.enter);
      await tester.pump();
      expect(invoked, isFalse);
830
      await pumpTest(tester, key: containerKey, supplyCallbacks: false);
831 832 833 834 835 836
      expect(focusing, isFalse);
      expect(hovering, isFalse);
      await pumpTest(tester, enabled: false, key: containerKey, supplyCallbacks: false);
      expect(focusing, isFalse);
      expect(hovering, isFalse);
      await gesture.moveTo(Offset.zero);
837
      await pumpTest(tester, key: containerKey, supplyCallbacks: false);
838 839 840
      expect(hovering, isFalse);
      expect(focusing, isFalse);
    });
841 842

    testWidgets(
843 844 845
      'FocusableActionDetector can prevent its descendants from being focusable',
      (WidgetTester tester) async {
        final FocusNode buttonNode = FocusNode(debugLabel: 'Test');
846

847 848 849 850 851 852 853 854
        await tester.pumpWidget(
          MaterialApp(
            home: FocusableActionDetector(
              child: MaterialButton(
                focusNode: buttonNode,
                child: const Text('Test'),
                onPressed: () {},
              ),
855 856
            ),
          ),
857
        );
858

859 860 861 862 863
        // Button is focusable
        expect(buttonNode.hasFocus, isFalse);
        buttonNode.requestFocus();
        await tester.pump();
        expect(buttonNode.hasFocus, isTrue);
864

865 866 867 868 869 870 871 872 873
        await tester.pumpWidget(
          MaterialApp(
            home: FocusableActionDetector(
              descendantsAreFocusable: false,
              child: MaterialButton(
                focusNode: buttonNode,
                child: const Text('Test'),
                onPressed: () {},
              ),
874 875
            ),
          ),
876
        );
877

878 879 880 881 882 883 884
        // Button is NOT focusable
        expect(buttonNode.hasFocus, isFalse);
        buttonNode.requestFocus();
        await tester.pump();
        expect(buttonNode.hasFocus, isFalse);
      },
    );
885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953

    testWidgets(
      'FocusableActionDetector can prevent its descendants from being traversable',
          (WidgetTester tester) async {
        final FocusNode buttonNode1 = FocusNode(debugLabel: 'Button Node 1');
        final FocusNode buttonNode2 = FocusNode(debugLabel: 'Button Node 2');

        await tester.pumpWidget(
          MaterialApp(
            home: FocusableActionDetector(
              child: Column(
                children: <Widget>[
                  MaterialButton(
                    focusNode: buttonNode1,
                    child: const Text('Node 1'),
                    onPressed: () {},
                  ),
                  MaterialButton(
                    focusNode: buttonNode2,
                    child: const Text('Node 2'),
                    onPressed: () {},
                  ),
                ],
              ),
            ),
          ),
        );

        buttonNode1.requestFocus();
        await tester.pump();
        expect(buttonNode1.hasFocus, isTrue);
        expect(buttonNode2.hasFocus, isFalse);
        primaryFocus!.nextFocus();
        await tester.pump();
        expect(buttonNode1.hasFocus, isFalse);
        expect(buttonNode2.hasFocus, isTrue);

        await tester.pumpWidget(
          MaterialApp(
            home: FocusableActionDetector(
              descendantsAreTraversable: false,
              child: Column(
                children: <Widget>[
                  MaterialButton(
                    focusNode: buttonNode1,
                    child: const Text('Node 1'),
                    onPressed: () {},
                  ),
                  MaterialButton(
                    focusNode: buttonNode2,
                    child: const Text('Node 2'),
                    onPressed: () {},
                  ),
                ],
              ),
            ),
          ),
        );

        buttonNode1.requestFocus();
        await tester.pump();
        expect(buttonNode1.hasFocus, isTrue);
        expect(buttonNode2.hasFocus, isFalse);
        primaryFocus!.nextFocus();
        await tester.pump();
        expect(buttonNode1.hasFocus, isTrue);
        expect(buttonNode2.hasFocus, isFalse);
      },
    );
954 955
  });

956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978
  group('Action subclasses', () {
    testWidgets('CallbackAction passes correct intent when invoked.', (WidgetTester tester) async {
      late Intent passedIntent;
      final TestAction action = TestAction(onInvoke: (Intent intent) {
        passedIntent = intent;
        return true;
      });
      const TestIntent intent = TestIntent();
      action._testInvoke(intent);
      expect(passedIntent, equals(intent));
    });
    testWidgets('VoidCallbackAction', (WidgetTester tester) async {
      bool called = false;
      void testCallback() {
        called = true;
      }
      final VoidCallbackAction action = VoidCallbackAction();
      final VoidCallbackIntent intent = VoidCallbackIntent(testCallback);
      action.invoke(intent);
      expect(called, isTrue);
    });
  });

979
  group('Diagnostics', () {
980
    testWidgets('default Intent debugFillProperties', (WidgetTester tester) async {
981 982
      final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();

983 984
      // ignore: invalid_use_of_protected_member
      const TestIntent().debugFillProperties(builder);
985 986

      final List<String> description = builder.properties
987 988 989 990 991
        .where((DiagnosticsNode node) {
          return !node.isFiltered(DiagnosticLevel.info);
        })
        .map((DiagnosticsNode node) => node.toString())
        .toList();
992

993
      expect(description, isEmpty);
994
    });
995
    testWidgets('default Actions debugFillProperties', (WidgetTester tester) async {
996 997
      final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();

998
      Actions(
999
        actions: const <Type, Action<Intent>>{},
1000 1001 1002
        dispatcher: const ActionDispatcher(),
        child: Container(),
      ).debugFillProperties(builder);
1003 1004

      final List<String> description = builder.properties
1005 1006 1007 1008 1009
        .where((DiagnosticsNode node) {
          return !node.isFiltered(DiagnosticLevel.info);
        })
        .map((DiagnosticsNode node) => node.toString())
        .toList();
1010

1011
      expect(description.length, equals(2));
1012 1013 1014 1015 1016 1017 1018
      expect(
        description,
        equalsIgnoringHashCodes(<String>[
          'dispatcher: ActionDispatcher#00000',
          'actions: {}',
        ]),
      );
1019
    });
1020
    testWidgets('Actions implements debugFillProperties', (WidgetTester tester) async {
1021 1022 1023 1024
      final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();

      Actions(
        key: const ValueKey<String>('foo'),
1025
        dispatcher: const ActionDispatcher(),
1026 1027
        actions: <Type, Action<Intent>>{
          TestIntent: TestAction(onInvoke: (Intent intent) => null),
1028 1029 1030 1031 1032
        },
        child: Container(key: const ValueKey<String>('baz')),
      ).debugFillProperties(builder);

      final List<String> description = builder.properties
1033 1034 1035 1036 1037
          .where((DiagnosticsNode node) {
            return !node.isFiltered(DiagnosticLevel.info);
          })
          .map((DiagnosticsNode node) => node.toString())
          .toList();
1038

1039
      expect(description.length, equals(2));
1040 1041 1042 1043 1044 1045 1046
      expect(
        description,
        equalsIgnoringHashCodes(<String>[
          'dispatcher: ActionDispatcher#00000',
          'actions: {TestIntent: TestAction#00000}',
        ]),
      );
1047
    });
1048
  });
1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368

  group('Action overriding', () {
    final List<String> invocations = <String>[];
    BuildContext? invokingContext;

    tearDown(() {
      invocations.clear();
      invokingContext = null;
    });

    testWidgets('Basic usage', (WidgetTester tester) async {
      late BuildContext invokingContext2;
      late BuildContext invokingContext3;
      await tester.pumpWidget(
        Builder(
          builder: (BuildContext context1) {
            return Actions(
              actions: <Type, Action<Intent>> {
                LogIntent : Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action1'), context: context1),
              },
              child: Builder(
                builder: (BuildContext context2) {
                  invokingContext2 = context2;
                  return Actions(
                    actions: <Type, Action<Intent>> {
                      LogIntent : Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action2'), context: context2),
                    },
                    child: Builder(
                      builder: (BuildContext context3) {
                        invokingContext3 = context3;
                        return Actions(
                          actions: <Type, Action<Intent>> {
                            LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action3'), context: context3),
                          },
                          child: Builder(
                            builder: (BuildContext context4) {
                              invokingContext = context4;
                              return const SizedBox();
                            },
                          ),
                        );
                      },
                    ),
                  );
                },
              ),
            );
          },
        ),
      );

      Actions.invoke(invokingContext!, LogIntent(log: invocations));
      expect(invocations, <String>[
        'action1.invokeAsOverride-pre-super',
        'action2.invokeAsOverride-pre-super',
        'action3.invoke',
        'action2.invokeAsOverride-post-super',
        'action1.invokeAsOverride-post-super',
      ]);

      invocations.clear();
      // Invoke from a different (higher) context.
      Actions.invoke(invokingContext3, LogIntent(log: invocations));
      expect(invocations, <String>[
        'action1.invokeAsOverride-pre-super',
        'action2.invoke',
        'action1.invokeAsOverride-post-super',
      ]);

      invocations.clear();
      // Invoke from a different (higher) context.
      Actions.invoke(invokingContext2, LogIntent(log: invocations));
      expect(invocations, <String>['action1.invoke']);
    });

    testWidgets('Does not break after use', (WidgetTester tester) async {
      late BuildContext invokingContext2;
      late BuildContext invokingContext3;
      await tester.pumpWidget(
        Builder(
          builder: (BuildContext context1) {
            return Actions(
              actions: <Type, Action<Intent>> {
                LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action1'), context: context1),
              },
              child: Builder(
                builder: (BuildContext context2) {
                  invokingContext2 = context2;
                  return Actions(
                    actions: <Type, Action<Intent>> {
                      LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action2'), context: context2),
                    },
                    child: Builder(
                      builder: (BuildContext context3) {
                        invokingContext3 = context3;
                        return Actions(
                          actions: <Type, Action<Intent>> {
                            LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action3'), context: context3),
                          },
                          child: Builder(
                            builder: (BuildContext context4) {
                              invokingContext = context4;
                              return const SizedBox();
                            },
                          ),
                        );
                      },
                    ),
                  );
                },
              ),
            );
          },
        ),
      );

      // Invoke a bunch of times and verify it still produces the same result.
      final List<BuildContext> randomContexts = <BuildContext>[
        invokingContext!,
        invokingContext2,
        invokingContext!,
        invokingContext3,
        invokingContext3,
        invokingContext3,
        invokingContext2,
      ];

      for (final BuildContext randomContext in randomContexts) {
        Actions.invoke(randomContext, LogIntent(log: invocations));
      }

      invocations.clear();
      Actions.invoke(invokingContext!, LogIntent(log: invocations));
      expect(invocations, <String>[
        'action1.invokeAsOverride-pre-super',
        'action2.invokeAsOverride-pre-super',
        'action3.invoke',
        'action2.invokeAsOverride-post-super',
        'action1.invokeAsOverride-post-super',
      ]);
    });

    testWidgets('Does not override if not overridable', (WidgetTester tester) async {
      await tester.pumpWidget(
        Builder(
          builder: (BuildContext context1) {
            return Actions(
              actions: <Type, Action<Intent>> {
                LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action1'), context: context1),
              },
              child: Builder(
                builder: (BuildContext context2) {
                  return Actions(
                    actions: <Type, Action<Intent>> { LogIntent : LogInvocationAction(actionName: 'action2') },
                    child: Builder(
                      builder: (BuildContext context3) {
                        return Actions(
                          actions: <Type, Action<Intent>> {
                            LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action3'), context: context3),
                          },
                          child: Builder(
                            builder: (BuildContext context4) {
                              invokingContext = context4;
                              return const SizedBox();
                            },
                          ),
                        );
                      },
                    ),
                  );
                },
              ),
            );
          },
        ),
      );

      Actions.invoke(invokingContext!, LogIntent(log: invocations));
      expect(invocations, <String>[
        'action2.invokeAsOverride-pre-super',
        'action3.invoke',
        'action2.invokeAsOverride-post-super',
      ]);
    });

    testWidgets('The final override controls isEnabled', (WidgetTester tester) async {
      await tester.pumpWidget(
        Builder(
          builder: (BuildContext context1) {
            return Actions(
              actions: <Type, Action<Intent>> {
                LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action1'), context: context1),
              },
              child: Builder(
                builder: (BuildContext context2) {
                  return Actions(
                    actions: <Type, Action<Intent>> {
                      LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action2', enabled: false), context: context2),
                    },
                    child: Builder(
                      builder: (BuildContext context3) {
                        return Actions(
                          actions: <Type, Action<Intent>> {
                            LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action3'), context: context3),
                          },
                          child: Builder(
                            builder: (BuildContext context4) {
                              invokingContext = context4;
                              return const SizedBox();
                            },
                          ),
                        );
                      },
                    ),
                  );
                },
              ),
            );
          },
        ),
      );

      Actions.invoke(invokingContext!, LogIntent(log: invocations));
      expect(invocations, <String>[
        'action1.invokeAsOverride-pre-super',
        'action2.invokeAsOverride-pre-super',
        'action3.invoke',
        'action2.invokeAsOverride-post-super',
        'action1.invokeAsOverride-post-super',
      ]);

      invocations.clear();
      await tester.pumpWidget(
        Builder(
          builder: (BuildContext context1) {
            return Actions(
              actions: <Type, Action<Intent>> {
                LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action1', enabled: false), context: context1),
              },
              child: Builder(
                builder: (BuildContext context2) {
                  return Actions(
                    actions: <Type, Action<Intent>> {
                      LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action2'), context: context2),
                    },
                    child: Builder(
                      builder: (BuildContext context3) {
                        return Actions(
                          actions: <Type, Action<Intent>> {
                            LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action3'), context: context3),
                          },
                          child: Builder(
                            builder: (BuildContext context4) {
                              invokingContext = context4;
                              return const SizedBox();
                            },
                          ),
                        );
                      },
                    ),
                  );
                },
              ),
            );
          },
        ),
      );

      Actions.invoke(invokingContext!, LogIntent(log: invocations));
      expect(invocations, <String>[]);
    });

    testWidgets('The override can choose to defer isActionEnabled to the overridable', (WidgetTester tester) async {
      await tester.pumpWidget(
        Builder(
          builder: (BuildContext context1) {
            return Actions(
              actions: <Type, Action<Intent>> {
                LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationButDeferIsEnabledAction(actionName: 'action1'), context: context1),
              },
              child: Builder(
                builder: (BuildContext context2) {
                  return Actions(
                    actions: <Type, Action<Intent>> {
                      LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action2', enabled: false), context: context2),
                    },
                    child: Builder(
                      builder: (BuildContext context3) {
                        return Actions(
                          actions: <Type, Action<Intent>> {
                            LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action3'), context: context3),
                          },
                          child: Builder(
                            builder: (BuildContext context4) {
                              invokingContext = context4;
                              return const SizedBox();
                            },
                          ),
                        );
                      },
                    ),
                  );
                },
              ),
            );
          },
        ),
      );

      Actions.invoke(invokingContext!, LogIntent(log: invocations));
      // Nothing since the final override defers its isActionEnabled state to action2,
      // which is disabled.
      expect(invocations, <String>[]);

      invocations.clear();
      await tester.pumpWidget(
        Builder(
          builder: (BuildContext context1) {
            return Actions(
              actions: <Type, Action<Intent>> {
1369
                LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action1'), context: context1),
1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425
              },
              child: Builder(
                builder: (BuildContext context2) {
                  return Actions(
                    actions: <Type, Action<Intent>> {
                      LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationButDeferIsEnabledAction(actionName: 'action2'), context: context2),
                    },
                    child: Builder(
                      builder: (BuildContext context3) {
                        return Actions(
                          actions: <Type, Action<Intent>> {
                            LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action3', enabled: false), context: context3),
                          },
                          child: Builder(
                            builder: (BuildContext context4) {
                              invokingContext = context4;
                              return const SizedBox();
                            },
                          ),
                        );
                      },
                    ),
                  );
                },
              ),
            );
          },
        ),
      );

      Actions.invoke(invokingContext!, LogIntent(log: invocations));
      // The final override (action1) is enabled so all 3 actions are enabled.
      expect(invocations, <String>[
        'action1.invokeAsOverride-pre-super',
        'action2.invokeAsOverride-pre-super',
        'action3.invoke',
        'action2.invokeAsOverride-post-super',
        'action1.invokeAsOverride-post-super',
      ]);
    });

    testWidgets('Throws on infinite recursions', (WidgetTester tester) async {
      late StateSetter setState;
      BuildContext? action2LookupContext;
      await tester.pumpWidget(
        Builder(
          builder: (BuildContext context1) {
            return Actions(
              actions: <Type, Action<Intent>> {
                LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action1'), context: context1),
              },
              child: StatefulBuilder(
                builder: (BuildContext context2, StateSetter stateSetter) {
                  setState = stateSetter;
                  return Actions(
                    actions: <Type, Action<Intent>> {
1426
                      if (action2LookupContext != null) LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action2'), context: action2LookupContext!),
1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534
                    },
                    child: Builder(
                      builder: (BuildContext context3) {
                        return Actions(
                          actions: <Type, Action<Intent>> {
                            LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action3'), context: context3),
                          },
                          child: Builder(
                            builder: (BuildContext context4) {
                              invokingContext = context4;
                              return const SizedBox();
                            },
                          ),
                        );
                      },
                    ),
                  );
                },
              ),
            );
          },
        ),
      );

      // Let action2 look up its override using a context below itself, so it
      // will find action3 as its override.
      expect(tester.takeException(), isNull);
      setState(() {
        action2LookupContext = invokingContext;
      });

      await tester.pump();
      expect(tester.takeException(), isNull);

      Object? exception;
      try {
        Actions.invoke(invokingContext!, LogIntent(log: invocations));
      } catch (e) {
        exception = e;
      }
      expect(exception?.toString(), contains('debugAssertIsEnabledMutuallyRecursive'));
    });

    testWidgets('Throws on invoking invalid override', (WidgetTester tester) async {
      await tester.pumpWidget(
        Builder(
          builder: (BuildContext context) {
            return Actions(
              actions: <Type, Action<Intent>> { LogIntent : TestContextAction() },
              child: Builder(
                builder: (BuildContext context) {
                  return Actions(
                    actions: <Type, Action<Intent>> {
                      LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action1'), context: context),
                    },
                    child: Builder(
                      builder: (BuildContext context1) {
                        invokingContext = context1;
                        return const SizedBox();
                      },
                    ),
                  );
                },
              ),
            );
          },
        ),
      );

      Object? exception;
      try {
        Actions.invoke(invokingContext!, LogIntent(log: invocations));
      } catch (e) {
        exception = e;
      }
      expect(
        exception?.toString(),
        contains('cannot be handled by an Action of runtime type TestContextAction.'),
      );
    });

    testWidgets('Make an overridable action overridable', (WidgetTester tester) async {
      await tester.pumpWidget(
        Builder(
          builder: (BuildContext context1) {
            return Actions(
              actions: <Type, Action<Intent>> {
                LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action1'), context: context1),
              },
              child: Builder(
                builder: (BuildContext context2) {
                  return Actions(
                    actions: <Type, Action<Intent>> {
                      LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action2'), context: context2),
                    },
                    child: Builder(
                      builder: (BuildContext context3) {
                        return Actions(
                          actions: <Type, Action<Intent>> {
                            LogIntent: Action<LogIntent>.overridable(
                              defaultAction: Action<LogIntent>.overridable(
                                defaultAction: Action<LogIntent>.overridable(
                                  defaultAction: LogInvocationAction(actionName: 'action3'),
                                  context: context1,
                                ),
                                context: context2,
                              ),
                              context: context3,
1535
                            ),
1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719
                          },
                          child: Builder(
                            builder: (BuildContext context4) {
                              invokingContext = context4;
                              return const SizedBox();
                            },
                          ),
                        );
                      },
                    ),
                  );
                },
              ),
            );
          },
        ),
      );

      Actions.invoke(invokingContext!, LogIntent(log: invocations));
      expect(invocations, <String>[
        'action1.invokeAsOverride-pre-super',
        'action2.invokeAsOverride-pre-super',
        'action3.invoke',
        'action2.invokeAsOverride-post-super',
        'action1.invokeAsOverride-post-super',
      ]);
    });

    testWidgets('Overriding Actions can change the intent', (WidgetTester tester) async {
      final List<String> newLogChannel = <String>[];
      await tester.pumpWidget(
        Builder(
          builder: (BuildContext context1) {
            return Actions(
              actions: <Type, Action<Intent>> {
                LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action1'), context: context1),
              },
              child: Builder(
                builder: (BuildContext context2) {
                  return Actions(
                    actions: <Type, Action<Intent>> {
                      LogIntent: Action<LogIntent>.overridable(defaultAction: RedirectOutputAction(actionName: 'action2', newLog: newLogChannel), context: context2),
                    },
                    child: Builder(
                      builder: (BuildContext context3) {
                        return Actions(
                          actions: <Type, Action<Intent>> {
                            LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action3'), context: context3),
                          },
                          child: Builder(
                            builder: (BuildContext context4) {
                              invokingContext = context4;
                              return const SizedBox();
                            },
                          ),
                        );
                      },
                    ),
                  );
                },
              ),
            );
          },
        ),
      );

      Actions.invoke(invokingContext!, LogIntent(log: invocations));
      expect(invocations, <String>[
        'action1.invokeAsOverride-pre-super',
        'action1.invokeAsOverride-post-super',
      ]);
      expect(newLogChannel, <String>[
        'action2.invokeAsOverride-pre-super',
        'action3.invoke',
        'action2.invokeAsOverride-post-super',
      ]);
    });

    testWidgets('Override non-context overridable Actions with a ContextAction', (WidgetTester tester) async {
      await tester.pumpWidget(
        Builder(
          builder: (BuildContext context1) {
            return Actions(
              actions: <Type, Action<Intent>> {
                // The default Action is a ContextAction subclass.
                LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationContextAction(actionName: 'action1'), context: context1),
              },
              child: Builder(
                builder: (BuildContext context2) {
                  return Actions(
                    actions: <Type, Action<Intent>> {
                      LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action2', enabled: false), context: context2),
                    },
                    child: Builder(
                      builder: (BuildContext context3) {
                        return Actions(
                          actions: <Type, Action<Intent>> {
                            LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action3'), context: context3),
                          },
                          child: Builder(
                            builder: (BuildContext context4) {
                              invokingContext = context4;
                              return const SizedBox();
                            },
                          ),
                        );
                      },
                    ),
                  );
                },
              ),
            );
          },
        ),
      );

      Actions.invoke(invokingContext!, LogIntent(log: invocations));
      expect(invocations, <String>[
        'action1.invokeAsOverride-pre-super',
        'action2.invokeAsOverride-pre-super',
        'action3.invoke',
        'action2.invokeAsOverride-post-super',
        'action1.invokeAsOverride-post-super',
      ]);

      // Action1 is a ContextAction and action2 & action3 are not.
      // They should not lose information.
      expect(LogInvocationContextAction.invokeContext, isNotNull);
      expect(LogInvocationContextAction.invokeContext, invokingContext);
    });

    testWidgets('Override a ContextAction with a regular Action', (WidgetTester tester) async {
      await tester.pumpWidget(
        Builder(
          builder: (BuildContext context1) {
            return Actions(
              actions: <Type, Action<Intent>> {
                LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action1'), context: context1),
              },
              child: Builder(
                builder: (BuildContext context2) {
                  return Actions(
                    actions: <Type, Action<Intent>> {
                      LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationContextAction(actionName: 'action2', enabled: false), context: context2),
                    },
                    child: Builder(
                      builder: (BuildContext context3) {
                        return Actions(
                          actions: <Type, Action<Intent>> {
                            LogIntent: Action<LogIntent>.overridable(defaultAction: LogInvocationAction(actionName: 'action3'), context: context3),
                          },
                          child: Builder(
                            builder: (BuildContext context4) {
                              invokingContext = context4;
                              return const SizedBox();
                            },
                          ),
                        );
                      },
                    ),
                  );
                },
              ),
            );
          },
        ),
      );

      Actions.invoke(invokingContext!, LogIntent(log: invocations));
      expect(invocations, <String>[
        'action1.invokeAsOverride-pre-super',
        'action2.invokeAsOverride-pre-super',
        'action3.invoke',
        'action2.invokeAsOverride-post-super',
        'action1.invokeAsOverride-post-super',
      ]);

      // Action2 is a ContextAction and action1 & action2 are regular actions.
      // Invoking action2 from action3 should still supply a non-null
      // BuildContext.
      expect(LogInvocationContextAction.invokeContext, isNotNull);
      expect(LogInvocationContextAction.invokeContext, invokingContext);
    });
  });
1720
}
1721

1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787
typedef PostInvokeCallback = void Function({Action<Intent> action, Intent intent, ActionDispatcher dispatcher});

class TestIntent extends Intent {
  const TestIntent();
}

class SecondTestIntent extends TestIntent {
  const SecondTestIntent();
}

class ThirdTestIntent extends SecondTestIntent {
  const ThirdTestIntent();
}

class TestAction extends CallbackAction<TestIntent> {
  TestAction({
    required OnInvokeCallback onInvoke,
  })  : assert(onInvoke != null),
        super(onInvoke: onInvoke);

  @override
  bool isEnabled(TestIntent intent) => enabled;

  bool get enabled => _enabled;
  bool _enabled = true;
  set enabled(bool value) {
    if (_enabled == value) {
      return;
    }
    _enabled = value;
    notifyActionListeners();
  }

  @override
  void addActionListener(ActionListenerCallback listener) {
    super.addActionListener(listener);
    listeners.add(listener);
  }

  @override
  void removeActionListener(ActionListenerCallback listener) {
    super.removeActionListener(listener);
    listeners.remove(listener);
  }
  List<ActionListenerCallback> listeners = <ActionListenerCallback>[];

  void _testInvoke(TestIntent intent) => invoke(intent);
}

class TestDispatcher extends ActionDispatcher {
  const TestDispatcher({this.postInvoke});

  final PostInvokeCallback? postInvoke;

  @override
  Object? invokeAction(Action<Intent> action, Intent intent, [BuildContext? context]) {
    final Object? result = super.invokeAction(action, intent, context);
    postInvoke?.call(action: action, intent: intent, dispatcher: this);
    return result;
  }
}

class TestDispatcher1 extends TestDispatcher {
  const TestDispatcher1({super.postInvoke});
}

1788 1789 1790 1791
class TestContextAction extends ContextAction<TestIntent> {
  List<BuildContext?> capturedContexts = <BuildContext?>[];

  @override
1792
  void invoke(covariant TestIntent intent, [BuildContext? context]) {
1793 1794 1795
    capturedContexts.add(context);
  }
}
1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813

class LogIntent extends Intent {
  const LogIntent({ required this.log });

  final List<String> log;
}

class LogInvocationAction extends Action<LogIntent> {
  LogInvocationAction({ required this.actionName, this.enabled = true });

  final String actionName;

  final bool enabled;

  @override
  bool get isActionEnabled => enabled;

  @override
1814
  void invoke(LogIntent intent) {
1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844
    final Action<LogIntent>? callingAction = this.callingAction;
    if (callingAction == null) {
      intent.log.add('$actionName.invoke');
    } else {
      intent.log.add('$actionName.invokeAsOverride-pre-super');
      callingAction.invoke(intent);
      intent.log.add('$actionName.invokeAsOverride-post-super');
    }
  }

  @override
  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
    super.debugFillProperties(properties);
    properties.add(StringProperty('actionName', actionName));
  }
}

class LogInvocationContextAction extends ContextAction<LogIntent> {
  LogInvocationContextAction({ required this.actionName, this.enabled = true });

  static BuildContext? invokeContext;

  final String actionName;

  final bool enabled;

  @override
  bool get isActionEnabled => enabled;

  @override
1845
  void invoke(LogIntent intent, [BuildContext? context]) {
1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864
    invokeContext = context;
    final Action<LogIntent>? callingAction = this.callingAction;
    if (callingAction == null) {
      intent.log.add('$actionName.invoke');
    } else {
      intent.log.add('$actionName.invokeAsOverride-pre-super');
      callingAction.invoke(intent);
      intent.log.add('$actionName.invokeAsOverride-post-super');
    }
  }

  @override
  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
    super.debugFillProperties(properties);
    properties.add(StringProperty('actionName', actionName));
  }
}

class LogInvocationButDeferIsEnabledAction extends LogInvocationAction {
1865
  LogInvocationButDeferIsEnabledAction({ required super.actionName });
1866 1867 1868 1869 1870 1871 1872 1873

  // Defer `isActionEnabled` to the overridable action.
  @override
  bool get isActionEnabled => callingAction?.isActionEnabled ?? false;
}

class RedirectOutputAction extends LogInvocationAction {
  RedirectOutputAction({
1874 1875
      required super.actionName,
      super.enabled,
1876
      required this.newLog,
1877
  });
1878 1879 1880 1881

  final List<String> newLog;

  @override
1882
  void invoke(LogIntent intent) => super.invoke(LogIntent(log: newLog));
1883
}