Flutter iOS Embedder
SemanticsObjectTest.mm
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #import <OCMock/OCMock.h>
6 #import <XCTest/XCTest.h>
7 
8 #import "flutter/shell/platform/darwin/common/framework/Headers/FlutterMacros.h"
9 #import "flutter/shell/platform/darwin/ios/framework/Source/FlutterPlatformViews_Internal.h"
10 #import "flutter/shell/platform/darwin/ios/framework/Source/FlutterSemanticsScrollView.h"
11 #import "flutter/shell/platform/darwin/ios/framework/Source/FlutterTouchInterceptingView_Test.h"
12 #import "flutter/shell/platform/darwin/ios/framework/Source/SemanticsObject.h"
13 #import "flutter/shell/platform/darwin/ios/framework/Source/SemanticsObjectTestMocks.h"
14 #import "flutter/shell/platform/darwin/ios/framework/Source/TextInputSemanticsObject.h"
15 
16 FLUTTER_ASSERT_ARC
17 
18 const float kFloatCompareEpsilon = 0.001;
19 
20 @interface SemanticsObject (UIFocusSystem) <UIFocusItem, UIFocusItemContainer>
21 @end
22 
23 @interface FlutterScrollableSemanticsObject (UIFocusItemScrollableContainer) <
24  UIFocusItemScrollableContainer>
25 @end
26 
27 @interface TextInputSemanticsObject (Test)
28 - (UIView<UITextInput>*)textInputSurrogate;
29 @end
30 
31 @interface SemanticsObjectTest : XCTestCase
32 @end
33 
34 @implementation SemanticsObjectTest
35 
36 - (void)testCreate {
37  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
38  new flutter::testing::MockAccessibilityBridge());
39  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
40  SemanticsObject* object = [[SemanticsObject alloc] initWithBridge:bridge uid:0];
41  XCTAssertNotNil(object);
42 }
43 
44 - (void)testSetChildren {
45  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
46  new flutter::testing::MockAccessibilityBridge());
47  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
48  SemanticsObject* parent = [[SemanticsObject alloc] initWithBridge:bridge uid:0];
49  SemanticsObject* child = [[SemanticsObject alloc] initWithBridge:bridge uid:1];
50  parent.children = @[ child ];
51  XCTAssertEqual(parent, child.parent);
52  parent.children = @[];
53  XCTAssertNil(child.parent);
54 }
55 
56 - (void)testAccessibilityHitTestFocusAtLeaf {
57  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
58  new flutter::testing::MockAccessibilityBridge());
59  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
60  SemanticsObject* object0 = [[SemanticsObject alloc] initWithBridge:bridge uid:0];
61  SemanticsObject* object1 = [[SemanticsObject alloc] initWithBridge:bridge uid:1];
62  SemanticsObject* object2 = [[SemanticsObject alloc] initWithBridge:bridge uid:2];
63  SemanticsObject* object3 = [[SemanticsObject alloc] initWithBridge:bridge uid:3];
64  object0.children = @[ object1 ];
65  object0.childrenInHitTestOrder = @[ object1 ];
66  object1.children = @[ object2, object3 ];
67  object1.childrenInHitTestOrder = @[ object2, object3 ];
68 
69  flutter::SemanticsNode node0;
70  node0.id = 0;
71  node0.rect = SkRect::MakeXYWH(0, 0, 200, 200);
72  node0.label = "0";
73  [object0 setSemanticsNode:&node0];
74 
75  flutter::SemanticsNode node1;
76  node1.id = 1;
77  node1.rect = SkRect::MakeXYWH(0, 0, 200, 200);
78  node1.label = "1";
79  [object1 setSemanticsNode:&node1];
80 
81  flutter::SemanticsNode node2;
82  node2.id = 2;
83  node2.rect = SkRect::MakeXYWH(0, 0, 100, 100);
84  node2.label = "2";
85  [object2 setSemanticsNode:&node2];
86 
87  flutter::SemanticsNode node3;
88  node3.id = 3;
89  node3.rect = SkRect::MakeXYWH(0, 0, 200, 200);
90  node3.label = "3";
91  [object3 setSemanticsNode:&node3];
92 
93  CGPoint point = CGPointMake(10, 10);
94  id hitTestResult = [object0 _accessibilityHitTest:point withEvent:nil];
95 
96  // Focus to object2 because it's the first object in hit test order
97  XCTAssertEqual(hitTestResult, object2);
98 }
99 
100 - (void)testAccessibilityHitTestNoFocusableItem {
101  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
102  new flutter::testing::MockAccessibilityBridge());
103  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
104  SemanticsObject* object0 = [[SemanticsObject alloc] initWithBridge:bridge uid:0];
105  SemanticsObject* object1 = [[SemanticsObject alloc] initWithBridge:bridge uid:1];
106  SemanticsObject* object2 = [[SemanticsObject alloc] initWithBridge:bridge uid:2];
107  SemanticsObject* object3 = [[SemanticsObject alloc] initWithBridge:bridge uid:3];
108  object0.children = @[ object1 ];
109  object0.childrenInHitTestOrder = @[ object1 ];
110  object1.children = @[ object2, object3 ];
111  object1.childrenInHitTestOrder = @[ object2, object3 ];
112 
113  flutter::SemanticsNode node0;
114  node0.id = 0;
115  node0.rect = SkRect::MakeXYWH(0, 0, 200, 200);
116  [object0 setSemanticsNode:&node0];
117 
118  flutter::SemanticsNode node1;
119  node1.id = 1;
120  node1.rect = SkRect::MakeXYWH(0, 0, 200, 200);
121  [object1 setSemanticsNode:&node1];
122 
123  flutter::SemanticsNode node2;
124  node2.id = 2;
125  node2.rect = SkRect::MakeXYWH(0, 0, 100, 100);
126  [object2 setSemanticsNode:&node2];
127 
128  flutter::SemanticsNode node3;
129  node3.id = 3;
130  node3.rect = SkRect::MakeXYWH(0, 0, 200, 200);
131  [object3 setSemanticsNode:&node3];
132 
133  CGPoint point = CGPointMake(10, 10);
134  id hitTestResult = [object0 _accessibilityHitTest:point withEvent:nil];
135 
136  XCTAssertNil(hitTestResult);
137 }
138 
139 - (void)testAccessibilityScrollToVisible {
140  fml::WeakPtrFactory<flutter::testing::MockAccessibilityBridge> factory(
141  new flutter::testing::MockAccessibilityBridge());
142  fml::WeakPtr<flutter::testing::MockAccessibilityBridge> bridge = factory.GetWeakPtr();
143  SemanticsObject* object3 = [[SemanticsObject alloc] initWithBridge:bridge uid:3];
144 
145  flutter::SemanticsNode node3;
146  node3.id = 3;
147  node3.rect = SkRect::MakeXYWH(0, 0, 200, 200);
148  [object3 setSemanticsNode:&node3];
149 
150  [object3 accessibilityScrollToVisible];
151 
152  XCTAssertTrue(bridge->observations.size() == 1);
153  XCTAssertTrue(bridge->observations[0].id == 3);
154  XCTAssertTrue(bridge->observations[0].action == flutter::SemanticsAction::kShowOnScreen);
155 }
156 
157 - (void)testAccessibilityScrollToVisibleWithChild {
158  fml::WeakPtrFactory<flutter::testing::MockAccessibilityBridge> factory(
159  new flutter::testing::MockAccessibilityBridge());
160  fml::WeakPtr<flutter::testing::MockAccessibilityBridge> bridge = factory.GetWeakPtr();
161  SemanticsObject* object3 = [[SemanticsObject alloc] initWithBridge:bridge uid:3];
162 
163  flutter::SemanticsNode node3;
164  node3.id = 3;
165  node3.rect = SkRect::MakeXYWH(0, 0, 200, 200);
166  [object3 setSemanticsNode:&node3];
167 
168  [object3 accessibilityScrollToVisibleWithChild:object3];
169 
170  XCTAssertTrue(bridge->observations.size() == 1);
171  XCTAssertTrue(bridge->observations[0].id == 3);
172  XCTAssertTrue(bridge->observations[0].action == flutter::SemanticsAction::kShowOnScreen);
173 }
174 
175 - (void)testAccessibilityHitTestOutOfRect {
176  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
177  new flutter::testing::MockAccessibilityBridge());
178  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
179  SemanticsObject* object0 = [[SemanticsObject alloc] initWithBridge:bridge uid:0];
180  SemanticsObject* object1 = [[SemanticsObject alloc] initWithBridge:bridge uid:1];
181  SemanticsObject* object2 = [[SemanticsObject alloc] initWithBridge:bridge uid:2];
182  SemanticsObject* object3 = [[SemanticsObject alloc] initWithBridge:bridge uid:3];
183  object0.children = @[ object1 ];
184  object0.childrenInHitTestOrder = @[ object1 ];
185  object1.children = @[ object2, object3 ];
186  object1.childrenInHitTestOrder = @[ object2, object3 ];
187 
188  flutter::SemanticsNode node0;
189  node0.id = 0;
190  node0.rect = SkRect::MakeXYWH(0, 0, 200, 200);
191  node0.label = "0";
192  [object0 setSemanticsNode:&node0];
193 
194  flutter::SemanticsNode node1;
195  node1.id = 1;
196  node1.rect = SkRect::MakeXYWH(0, 0, 200, 200);
197  node1.label = "1";
198  [object1 setSemanticsNode:&node1];
199 
200  flutter::SemanticsNode node2;
201  node2.id = 2;
202  node2.rect = SkRect::MakeXYWH(0, 0, 100, 100);
203  node2.label = "2";
204  [object2 setSemanticsNode:&node2];
205 
206  flutter::SemanticsNode node3;
207  node3.id = 3;
208  node3.rect = SkRect::MakeXYWH(0, 0, 200, 200);
209  node3.label = "3";
210  [object3 setSemanticsNode:&node3];
211 
212  CGPoint point = CGPointMake(300, 300);
213  id hitTestResult = [object0 _accessibilityHitTest:point withEvent:nil];
214 
215  XCTAssertNil(hitTestResult);
216 }
217 
218 - (void)testReplaceChildAtIndex {
219  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
220  new flutter::testing::MockAccessibilityBridge());
221  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
222  SemanticsObject* parent = [[SemanticsObject alloc] initWithBridge:bridge uid:0];
223  SemanticsObject* child1 = [[SemanticsObject alloc] initWithBridge:bridge uid:1];
224  SemanticsObject* child2 = [[SemanticsObject alloc] initWithBridge:bridge uid:2];
225  parent.children = @[ child1 ];
226  [parent replaceChildAtIndex:0 withChild:child2];
227  XCTAssertNil(child1.parent);
228  XCTAssertEqual(parent, child2.parent);
229  XCTAssertEqualObjects(parent.children, @[ child2 ]);
230 }
231 
232 - (void)testPlainSemanticsObjectWithLabelHasStaticTextTrait {
233  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
234  new flutter::testing::MockAccessibilityBridge());
235  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
236  flutter::SemanticsNode node;
237  node.label = "foo";
238  FlutterSemanticsObject* object = [[FlutterSemanticsObject alloc] initWithBridge:bridge uid:0];
239  [object setSemanticsNode:&node];
240  XCTAssertEqual([object accessibilityTraits], UIAccessibilityTraitStaticText);
241 }
242 
243 - (void)testNodeWithImplicitScrollIsAnAccessibilityElementWhenItisHidden {
244  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
245  new flutter::testing::MockAccessibilityBridge());
246  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
247  flutter::SemanticsNode node;
248  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling) |
249  static_cast<int32_t>(flutter::SemanticsFlags::kIsHidden);
250  FlutterSemanticsObject* object = [[FlutterSemanticsObject alloc] initWithBridge:bridge uid:0];
251  [object setSemanticsNode:&node];
252  XCTAssertEqual(object.isAccessibilityElement, YES);
253 }
254 
255 - (void)testNodeWithImplicitScrollIsNotAnAccessibilityElementWhenItisNotHidden {
256  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
257  new flutter::testing::MockAccessibilityBridge());
258  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
259  flutter::SemanticsNode node;
260  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling);
261  FlutterSemanticsObject* object = [[FlutterSemanticsObject alloc] initWithBridge:bridge uid:0];
262  [object setSemanticsNode:&node];
263  XCTAssertEqual(object.isAccessibilityElement, NO);
264 }
265 
266 - (void)testIntresetingSemanticsObjectWithLabelHasStaticTextTrait {
267  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
268  new flutter::testing::MockAccessibilityBridge());
269  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
270  flutter::SemanticsNode node;
271  node.label = "foo";
272  FlutterSemanticsObject* object = [[FlutterSemanticsObject alloc] initWithBridge:bridge uid:0];
273  SemanticsObject* child1 = [[SemanticsObject alloc] initWithBridge:bridge uid:1];
274  object.children = @[ child1 ];
275  [object setSemanticsNode:&node];
276  XCTAssertEqual([object accessibilityTraits], UIAccessibilityTraitNone);
277 }
278 
279 - (void)testIntresetingSemanticsObjectWithLabelHasStaticTextTrait1 {
280  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
281  new flutter::testing::MockAccessibilityBridge());
282  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
283  flutter::SemanticsNode node;
284  node.label = "foo";
285  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kIsTextField);
286  FlutterSemanticsObject* object = [[FlutterSemanticsObject alloc] initWithBridge:bridge uid:0];
287  [object setSemanticsNode:&node];
288  XCTAssertEqual([object accessibilityTraits], UIAccessibilityTraitNone);
289 }
290 
291 - (void)testIntresetingSemanticsObjectWithLabelHasStaticTextTrait2 {
292  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
293  new flutter::testing::MockAccessibilityBridge());
294  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
295  flutter::SemanticsNode node;
296  node.label = "foo";
297  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kIsButton);
298  FlutterSemanticsObject* object = [[FlutterSemanticsObject alloc] initWithBridge:bridge uid:0];
299  [object setSemanticsNode:&node];
300  XCTAssertEqual([object accessibilityTraits], UIAccessibilityTraitButton);
301 }
302 
303 - (void)testVerticalFlutterScrollableSemanticsObject {
304  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
305  new flutter::testing::MockAccessibilityBridge());
306  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
307 
308  float transformScale = 0.5f;
309  float screenScale = [[bridge->view() window] screen].scale;
310  float effectivelyScale = transformScale / screenScale;
311  float x = 10;
312  float y = 10;
313  float w = 100;
314  float h = 200;
315  float scrollExtentMax = 500.0;
316  float scrollPosition = 150.0;
317 
318  flutter::SemanticsNode node;
319  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling);
320  node.actions = flutter::kVerticalScrollSemanticsActions;
321  node.rect = SkRect::MakeXYWH(x, y, w, h);
322  node.scrollExtentMax = scrollExtentMax;
323  node.scrollPosition = scrollPosition;
324  node.transform = {
325  transformScale, 0, 0, 0, 0, transformScale, 0, 0, 0, 0, transformScale, 0, 0, 0, 0, 1.0};
326  FlutterScrollableSemanticsObject* scrollable =
327  [[FlutterScrollableSemanticsObject alloc] initWithBridge:bridge uid:0];
328  [scrollable setSemanticsNode:&node];
329  [scrollable accessibilityBridgeDidFinishUpdate];
330  UIScrollView* scrollView = [scrollable nativeAccessibility];
331 
332  XCTAssertEqualWithAccuracy(scrollView.frame.origin.x, x * effectivelyScale, kFloatCompareEpsilon);
333  XCTAssertEqualWithAccuracy(scrollView.frame.origin.y, y * effectivelyScale, kFloatCompareEpsilon);
334  XCTAssertEqualWithAccuracy(scrollView.frame.size.width, w * effectivelyScale,
335  kFloatCompareEpsilon);
336  XCTAssertEqualWithAccuracy(scrollView.frame.size.height, h * effectivelyScale,
337  kFloatCompareEpsilon);
338 
339  XCTAssertEqualWithAccuracy(scrollView.contentSize.width, w * effectivelyScale,
340  kFloatCompareEpsilon);
341  XCTAssertEqualWithAccuracy(scrollView.contentSize.height,
342  (h + scrollExtentMax) * effectivelyScale, kFloatCompareEpsilon);
343 
344  XCTAssertEqual(scrollView.contentOffset.x, 0);
345  XCTAssertEqualWithAccuracy(scrollView.contentOffset.y, scrollPosition * effectivelyScale,
346  kFloatCompareEpsilon);
347 }
348 
349 - (void)testVerticalFlutterScrollableSemanticsObjectNoWindowDoesNotCrash {
350  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
351  new flutter::testing::MockAccessibilityBridgeNoWindow());
352  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
353 
354  float transformScale = 0.5f;
355  float x = 10;
356  float y = 10;
357  float w = 100;
358  float h = 200;
359  float scrollExtentMax = 500.0;
360  float scrollPosition = 150.0;
361 
362  flutter::SemanticsNode node;
363  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling);
364  node.actions = flutter::kVerticalScrollSemanticsActions;
365  node.rect = SkRect::MakeXYWH(x, y, w, h);
366  node.scrollExtentMax = scrollExtentMax;
367  node.scrollPosition = scrollPosition;
368  node.transform = {
369  transformScale, 0, 0, 0, 0, transformScale, 0, 0, 0, 0, transformScale, 0, 0, 0, 0, 1.0};
370  FlutterScrollableSemanticsObject* scrollable =
371  [[FlutterScrollableSemanticsObject alloc] initWithBridge:bridge uid:0];
372  [scrollable setSemanticsNode:&node];
373  [scrollable accessibilityBridgeDidFinishUpdate];
374  XCTAssertNoThrow([scrollable accessibilityBridgeDidFinishUpdate]);
375 }
376 
377 - (void)testHorizontalFlutterScrollableSemanticsObject {
378  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
379  new flutter::testing::MockAccessibilityBridge());
380  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
381 
382  float transformScale = 0.5f;
383  float screenScale = [[bridge->view() window] screen].scale;
384  float effectivelyScale = transformScale / screenScale;
385  float x = 10;
386  float y = 10;
387  float w = 100;
388  float h = 200;
389  float scrollExtentMax = 500.0;
390  float scrollPosition = 150.0;
391 
392  flutter::SemanticsNode node;
393  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling);
394  node.actions = flutter::kHorizontalScrollSemanticsActions;
395  node.rect = SkRect::MakeXYWH(x, y, w, h);
396  node.scrollExtentMax = scrollExtentMax;
397  node.scrollPosition = scrollPosition;
398  node.transform = {
399  transformScale, 0, 0, 0, 0, transformScale, 0, 0, 0, 0, transformScale, 0, 0, 0, 0, 1.0};
400  FlutterScrollableSemanticsObject* scrollable =
401  [[FlutterScrollableSemanticsObject alloc] initWithBridge:bridge uid:0];
402  [scrollable setSemanticsNode:&node];
403  [scrollable accessibilityBridgeDidFinishUpdate];
404  UIScrollView* scrollView = [scrollable nativeAccessibility];
405 
406  XCTAssertEqualWithAccuracy(scrollView.frame.origin.x, x * effectivelyScale, kFloatCompareEpsilon);
407  XCTAssertEqualWithAccuracy(scrollView.frame.origin.y, y * effectivelyScale, kFloatCompareEpsilon);
408  XCTAssertEqualWithAccuracy(scrollView.frame.size.width, w * effectivelyScale,
409  kFloatCompareEpsilon);
410  XCTAssertEqualWithAccuracy(scrollView.frame.size.height, h * effectivelyScale,
411  kFloatCompareEpsilon);
412 
413  XCTAssertEqualWithAccuracy(scrollView.contentSize.width, (w + scrollExtentMax) * effectivelyScale,
414  kFloatCompareEpsilon);
415  XCTAssertEqualWithAccuracy(scrollView.contentSize.height, h * effectivelyScale,
416  kFloatCompareEpsilon);
417 
418  XCTAssertEqualWithAccuracy(scrollView.contentOffset.x, scrollPosition * effectivelyScale,
419  kFloatCompareEpsilon);
420  XCTAssertEqual(scrollView.contentOffset.y, 0);
421 }
422 
423 - (void)testCanHandleInfiniteScrollExtent {
424  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
425  new flutter::testing::MockAccessibilityBridge());
426  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
427 
428  float transformScale = 0.5f;
429  float screenScale = [[bridge->view() window] screen].scale;
430  float effectivelyScale = transformScale / screenScale;
431  float x = 10;
432  float y = 10;
433  float w = 100;
434  float h = 200;
435  float scrollExtentMax = INFINITY;
436  float scrollPosition = 150.0;
437 
438  flutter::SemanticsNode node;
439  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling);
440  node.actions = flutter::kVerticalScrollSemanticsActions;
441  node.rect = SkRect::MakeXYWH(x, y, w, h);
442  node.scrollExtentMax = scrollExtentMax;
443  node.scrollPosition = scrollPosition;
444  node.transform = {
445  transformScale, 0, 0, 0, 0, transformScale, 0, 0, 0, 0, transformScale, 0, 0, 0, 0, 1.0};
446  FlutterScrollableSemanticsObject* scrollable =
447  [[FlutterScrollableSemanticsObject alloc] initWithBridge:bridge uid:0];
448  [scrollable setSemanticsNode:&node];
449  [scrollable accessibilityBridgeDidFinishUpdate];
450  UIScrollView* scrollView = [scrollable nativeAccessibility];
451  XCTAssertEqualWithAccuracy(scrollView.frame.origin.x, x * effectivelyScale, kFloatCompareEpsilon);
452  XCTAssertEqualWithAccuracy(scrollView.frame.origin.y, y * effectivelyScale, kFloatCompareEpsilon);
453  XCTAssertEqualWithAccuracy(scrollView.frame.size.width, w * effectivelyScale,
454  kFloatCompareEpsilon);
455  XCTAssertEqualWithAccuracy(scrollView.frame.size.height, h * effectivelyScale,
456  kFloatCompareEpsilon);
457 
458  XCTAssertEqualWithAccuracy(scrollView.contentSize.width, w * effectivelyScale,
459  kFloatCompareEpsilon);
460  XCTAssertEqualWithAccuracy(scrollView.contentSize.height,
461  (h + kScrollExtentMaxForInf + scrollPosition) * effectivelyScale,
462  kFloatCompareEpsilon);
463 
464  XCTAssertEqual(scrollView.contentOffset.x, 0);
465  XCTAssertEqualWithAccuracy(scrollView.contentOffset.y, scrollPosition * effectivelyScale,
466  kFloatCompareEpsilon);
467 }
468 
469 - (void)testCanHandleNaNScrollExtentAndScrollPoisition {
470  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
471  new flutter::testing::MockAccessibilityBridge());
472  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
473 
474  float transformScale = 0.5f;
475  float screenScale = [[bridge->view() window] screen].scale;
476  float effectivelyScale = transformScale / screenScale;
477  float x = 10;
478  float y = 10;
479  float w = 100;
480  float h = 200;
481  float scrollExtentMax = std::nan("");
482  float scrollPosition = std::nan("");
483 
484  flutter::SemanticsNode node;
485  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling);
486  node.actions = flutter::kVerticalScrollSemanticsActions;
487  node.rect = SkRect::MakeXYWH(x, y, w, h);
488  node.scrollExtentMax = scrollExtentMax;
489  node.scrollPosition = scrollPosition;
490  node.transform = {
491  transformScale, 0, 0, 0, 0, transformScale, 0, 0, 0, 0, transformScale, 0, 0, 0, 0, 1.0};
492  FlutterScrollableSemanticsObject* scrollable =
493  [[FlutterScrollableSemanticsObject alloc] initWithBridge:bridge uid:0];
494  [scrollable setSemanticsNode:&node];
495  [scrollable accessibilityBridgeDidFinishUpdate];
496  UIScrollView* scrollView = [scrollable nativeAccessibility];
497 
498  XCTAssertEqualWithAccuracy(scrollView.frame.origin.x, x * effectivelyScale, kFloatCompareEpsilon);
499  XCTAssertEqualWithAccuracy(scrollView.frame.origin.y, y * effectivelyScale, kFloatCompareEpsilon);
500  XCTAssertEqualWithAccuracy(scrollView.frame.size.width, w * effectivelyScale,
501  kFloatCompareEpsilon);
502  XCTAssertEqualWithAccuracy(scrollView.frame.size.height, h * effectivelyScale,
503  kFloatCompareEpsilon);
504 
505  // Content size equal to the scrollable size.
506  XCTAssertEqualWithAccuracy(scrollView.contentSize.width, w * effectivelyScale,
507  kFloatCompareEpsilon);
508  XCTAssertEqualWithAccuracy(scrollView.contentSize.height, h * effectivelyScale,
509  kFloatCompareEpsilon);
510 
511  XCTAssertEqual(scrollView.contentOffset.x, 0);
512  XCTAssertEqual(scrollView.contentOffset.y, 0);
513 }
514 
515 - (void)testFlutterScrollableSemanticsObjectIsNotHittestable {
516  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
517  new flutter::testing::MockAccessibilityBridge());
518  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
519 
520  flutter::SemanticsNode node;
521  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling);
522  node.actions = flutter::kHorizontalScrollSemanticsActions;
523  node.rect = SkRect::MakeXYWH(0, 0, 100, 200);
524  node.scrollExtentMax = 100.0;
525  node.scrollPosition = 0.0;
526 
527  FlutterScrollableSemanticsObject* scrollable =
528  [[FlutterScrollableSemanticsObject alloc] initWithBridge:bridge uid:0];
529  [scrollable setSemanticsNode:&node];
530  [scrollable accessibilityBridgeDidFinishUpdate];
531  UIScrollView* scrollView = [scrollable nativeAccessibility];
532  XCTAssertEqual([scrollView hitTest:CGPointMake(10, 10) withEvent:nil], nil);
533 }
534 
535 - (void)testFlutterScrollableSemanticsObjectIsHiddenWhenVoiceOverIsRunning {
536  flutter::testing::MockAccessibilityBridge* mock = new flutter::testing::MockAccessibilityBridge();
537  mock->isVoiceOverRunningValue = false;
538  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(mock);
539  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
540 
541  flutter::SemanticsNode node;
542  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling);
543  node.actions = flutter::kHorizontalScrollSemanticsActions;
544  node.rect = SkRect::MakeXYWH(0, 0, 100, 200);
545  node.scrollExtentMax = 100.0;
546  node.scrollPosition = 0.0;
547 
548  FlutterScrollableSemanticsObject* scrollable =
549  [[FlutterScrollableSemanticsObject alloc] initWithBridge:bridge uid:0];
550  [scrollable setSemanticsNode:&node];
551  [scrollable accessibilityBridgeDidFinishUpdate];
552  UIScrollView* scrollView = [scrollable nativeAccessibility];
553  XCTAssertTrue(scrollView.isAccessibilityElement);
554  mock->isVoiceOverRunningValue = true;
555  XCTAssertFalse(scrollView.isAccessibilityElement);
556 }
557 
558 - (void)testFlutterSemanticsObjectHasIdentifier {
559  flutter::testing::MockAccessibilityBridge* mock = new flutter::testing::MockAccessibilityBridge();
560  mock->isVoiceOverRunningValue = true;
561  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(mock);
562  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
563 
564  flutter::SemanticsNode node;
565  node.identifier = "identifier";
566 
567  FlutterSemanticsObject* object = [[FlutterSemanticsObject alloc] initWithBridge:bridge uid:0];
568  [object setSemanticsNode:&node];
569  XCTAssertTrue([object.accessibilityIdentifier isEqualToString:@"identifier"]);
570 }
571 
572 - (void)testFlutterScrollableSemanticsObjectWithLabelValueHintIsNotHiddenWhenVoiceOverIsRunning {
573  flutter::testing::MockAccessibilityBridge* mock = new flutter::testing::MockAccessibilityBridge();
574  mock->isVoiceOverRunningValue = true;
575  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(mock);
576  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
577 
578  flutter::SemanticsNode node;
579  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling);
580  node.actions = flutter::kHorizontalScrollSemanticsActions;
581  node.rect = SkRect::MakeXYWH(0, 0, 100, 200);
582  node.label = "label";
583  node.value = "value";
584  node.hint = "hint";
585  node.scrollExtentMax = 100.0;
586  node.scrollPosition = 0.0;
587 
588  FlutterScrollableSemanticsObject* scrollable =
589  [[FlutterScrollableSemanticsObject alloc] initWithBridge:bridge uid:0];
590  [scrollable setSemanticsNode:&node];
591  [scrollable accessibilityBridgeDidFinishUpdate];
592  UIScrollView* scrollView = [scrollable nativeAccessibility];
593  XCTAssertTrue(scrollView.isAccessibilityElement);
594  XCTAssertTrue(
595  [scrollView.accessibilityLabel isEqualToString:NSLocalizedString(@"label", @"test")]);
596  XCTAssertTrue(
597  [scrollView.accessibilityValue isEqualToString:NSLocalizedString(@"value", @"test")]);
598  XCTAssertTrue([scrollView.accessibilityHint isEqualToString:NSLocalizedString(@"hint", @"test")]);
599 }
600 
601 - (void)testFlutterSemanticsObjectMergeTooltipToLabel {
602  flutter::testing::MockAccessibilityBridge* mock = new flutter::testing::MockAccessibilityBridge();
603  mock->isVoiceOverRunningValue = true;
604  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(mock);
605  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
606 
607  flutter::SemanticsNode node;
608  node.rect = SkRect::MakeXYWH(0, 0, 100, 200);
609  node.label = "label";
610  node.tooltip = "tooltip";
611  FlutterSemanticsObject* object = [[FlutterSemanticsObject alloc] initWithBridge:bridge uid:0];
612  [object setSemanticsNode:&node];
613  XCTAssertTrue(object.isAccessibilityElement);
614  XCTAssertTrue([object.accessibilityLabel isEqualToString:@"label\ntooltip"]);
615 }
616 
617 - (void)testSemanticsObjectContainerAccessibilityFrameCoversEntireScreen {
618  flutter::testing::MockAccessibilityBridge* mock = new flutter::testing::MockAccessibilityBridge();
619  mock->isVoiceOverRunningValue = true;
620  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(mock);
621  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
622 
623  flutter::SemanticsNode parent;
624  parent.id = 0;
625  parent.actions = static_cast<int32_t>(flutter::SemanticsAction::kTap);
626 
627  flutter::SemanticsNode child;
628  child.id = 1;
629  child.actions = static_cast<int32_t>(flutter::SemanticsAction::kTap);
630  child.rect = SkRect::MakeXYWH(0, 0, 100, 100);
631  parent.childrenInTraversalOrder.push_back(1);
632 
633  FlutterSemanticsObject* parentObject = [[FlutterSemanticsObject alloc] initWithBridge:bridge
634  uid:0];
635  [parentObject setSemanticsNode:&parent];
636 
637  FlutterSemanticsObject* childObject = [[FlutterSemanticsObject alloc] initWithBridge:bridge
638  uid:1];
639  [childObject setSemanticsNode:&child];
640 
641  parentObject.children = @[ childObject ];
642  [parentObject accessibilityBridgeDidFinishUpdate];
643  [childObject accessibilityBridgeDidFinishUpdate];
644 
645  SemanticsObjectContainer* container =
646  static_cast<SemanticsObjectContainer*>(parentObject.accessibilityContainer);
647 
648  XCTAssertTrue(childObject.accessibilityRespondsToUserInteraction);
649  XCTAssertTrue(CGRectEqualToRect(container.accessibilityFrame, UIScreen.mainScreen.bounds));
650 }
651 
652 - (void)testFlutterSemanticsObjectAttributedStringsDoNotCrashWhenEmpty {
653  flutter::testing::MockAccessibilityBridge* mock = new flutter::testing::MockAccessibilityBridge();
654  mock->isVoiceOverRunningValue = true;
655  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(mock);
656  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
657 
658  flutter::SemanticsNode node;
659  node.rect = SkRect::MakeXYWH(0, 0, 100, 200);
660  FlutterSemanticsObject* object = [[FlutterSemanticsObject alloc] initWithBridge:bridge uid:0];
661  [object setSemanticsNode:&node];
662  XCTAssertTrue(object.accessibilityAttributedLabel == nil);
663 }
664 
665 - (void)testFlutterScrollableSemanticsObjectReturnsParentContainerIfNoChildren {
666  flutter::testing::MockAccessibilityBridge* mock = new flutter::testing::MockAccessibilityBridge();
667  mock->isVoiceOverRunningValue = true;
668  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(mock);
669  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
670 
671  flutter::SemanticsNode parent;
672  parent.id = 0;
673  parent.rect = SkRect::MakeXYWH(0, 0, 100, 200);
674  parent.label = "label";
675  parent.value = "value";
676  parent.hint = "hint";
677 
678  flutter::SemanticsNode node;
679  node.id = 1;
680  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling);
681  node.actions = flutter::kHorizontalScrollSemanticsActions;
682  node.rect = SkRect::MakeXYWH(0, 0, 100, 200);
683  node.label = "label";
684  node.value = "value";
685  node.hint = "hint";
686  node.scrollExtentMax = 100.0;
687  node.scrollPosition = 0.0;
688  parent.childrenInTraversalOrder.push_back(1);
689 
690  FlutterSemanticsObject* parentObject = [[FlutterSemanticsObject alloc] initWithBridge:bridge
691  uid:0];
692  [parentObject setSemanticsNode:&parent];
693 
694  FlutterScrollableSemanticsObject* scrollable =
695  [[FlutterScrollableSemanticsObject alloc] initWithBridge:bridge uid:1];
696  [scrollable setSemanticsNode:&node];
697  UIScrollView* scrollView = [scrollable nativeAccessibility];
698 
699  parentObject.children = @[ scrollable ];
700  [parentObject accessibilityBridgeDidFinishUpdate];
701  [scrollable accessibilityBridgeDidFinishUpdate];
702  XCTAssertTrue(scrollView.isAccessibilityElement);
703  SemanticsObjectContainer* container =
704  static_cast<SemanticsObjectContainer*>(scrollable.accessibilityContainer);
705  XCTAssertEqual(container.semanticsObject, parentObject);
706 }
707 
708 - (void)testFlutterScrollableSemanticsObjectNoScrollBarOrContentInsets {
709  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
710  new flutter::testing::MockAccessibilityBridge());
711  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
712 
713  flutter::SemanticsNode node;
714  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling);
715  node.actions = flutter::kHorizontalScrollSemanticsActions;
716  node.rect = SkRect::MakeXYWH(0, 0, 100, 200);
717  node.scrollExtentMax = 100.0;
718  node.scrollPosition = 0.0;
719 
720  FlutterScrollableSemanticsObject* scrollable =
721  [[FlutterScrollableSemanticsObject alloc] initWithBridge:bridge uid:0];
722  [scrollable setSemanticsNode:&node];
723  [scrollable accessibilityBridgeDidFinishUpdate];
724  UIScrollView* scrollView = [scrollable nativeAccessibility];
725 
726  XCTAssertFalse(scrollView.showsHorizontalScrollIndicator);
727  XCTAssertFalse(scrollView.showsVerticalScrollIndicator);
728  XCTAssertEqual(scrollView.contentInsetAdjustmentBehavior,
729  UIScrollViewContentInsetAdjustmentNever);
730  XCTAssertTrue(UIEdgeInsetsEqualToEdgeInsets(scrollView.contentInset, UIEdgeInsetsZero));
731 }
732 
733 - (void)testSemanticsObjectBuildsAttributedString {
734  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
735  new flutter::testing::MockAccessibilityBridge());
736  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
737  flutter::SemanticsNode node;
738  node.label = "label";
739  std::shared_ptr<flutter::SpellOutStringAttribute> attribute =
740  std::make_shared<flutter::SpellOutStringAttribute>();
741  attribute->start = 1;
742  attribute->end = 2;
743  attribute->type = flutter::StringAttributeType::kSpellOut;
744  node.labelAttributes.push_back(attribute);
745  node.value = "value";
746  attribute = std::make_shared<flutter::SpellOutStringAttribute>();
747  attribute->start = 2;
748  attribute->end = 3;
749  attribute->type = flutter::StringAttributeType::kSpellOut;
750  node.valueAttributes.push_back(attribute);
751  node.hint = "hint";
752  std::shared_ptr<flutter::LocaleStringAttribute> local_attribute =
753  std::make_shared<flutter::LocaleStringAttribute>();
754  local_attribute->start = 3;
755  local_attribute->end = 4;
756  local_attribute->type = flutter::StringAttributeType::kLocale;
757  local_attribute->locale = "en-MX";
758  node.hintAttributes.push_back(local_attribute);
759  FlutterSemanticsObject* object = [[FlutterSemanticsObject alloc] initWithBridge:bridge uid:0];
760  [object setSemanticsNode:&node];
761  NSMutableAttributedString* expectedAttributedLabel =
762  [[NSMutableAttributedString alloc] initWithString:NSLocalizedString(@"label", @"test")];
763  NSDictionary* attributeDict = @{
764  UIAccessibilitySpeechAttributeSpellOut : @YES,
765  };
766  [expectedAttributedLabel setAttributes:attributeDict range:NSMakeRange(1, 1)];
767  XCTAssertTrue(
768  [object.accessibilityAttributedLabel isEqualToAttributedString:expectedAttributedLabel]);
769 
770  NSMutableAttributedString* expectedAttributedValue =
771  [[NSMutableAttributedString alloc] initWithString:NSLocalizedString(@"value", @"test")];
772  attributeDict = @{
773  UIAccessibilitySpeechAttributeSpellOut : @YES,
774  };
775  [expectedAttributedValue setAttributes:attributeDict range:NSMakeRange(2, 1)];
776  XCTAssertTrue(
777  [object.accessibilityAttributedValue isEqualToAttributedString:expectedAttributedValue]);
778 
779  NSMutableAttributedString* expectedAttributedHint =
780  [[NSMutableAttributedString alloc] initWithString:NSLocalizedString(@"hint", @"test")];
781  attributeDict = @{
782  UIAccessibilitySpeechAttributeLanguage : @"en-MX",
783  };
784  [expectedAttributedHint setAttributes:attributeDict range:NSMakeRange(3, 1)];
785  XCTAssertTrue(
786  [object.accessibilityAttributedHint isEqualToAttributedString:expectedAttributedHint]);
787 }
788 
789 - (void)testShouldTriggerAnnouncement {
790  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
791  new flutter::testing::MockAccessibilityBridge());
792  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
793  SemanticsObject* object = [[SemanticsObject alloc] initWithBridge:bridge uid:0];
794 
795  // Handle nil with no node set.
796  XCTAssertFalse([object nodeShouldTriggerAnnouncement:nil]);
797 
798  // Handle initial setting of node with liveRegion
799  flutter::SemanticsNode node;
800  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kIsLiveRegion);
801  node.label = "foo";
802  XCTAssertTrue([object nodeShouldTriggerAnnouncement:&node]);
803 
804  // Handle nil with node set.
805  [object setSemanticsNode:&node];
806  XCTAssertFalse([object nodeShouldTriggerAnnouncement:nil]);
807 
808  // Handle new node, still has live region, same label.
809  XCTAssertFalse([object nodeShouldTriggerAnnouncement:&node]);
810 
811  // Handle update node with new label, still has live region.
812  flutter::SemanticsNode updatedNode;
813  updatedNode.flags = static_cast<int32_t>(flutter::SemanticsFlags::kIsLiveRegion);
814  updatedNode.label = "bar";
815  XCTAssertTrue([object nodeShouldTriggerAnnouncement:&updatedNode]);
816 
817  // Handle dropping the live region flag.
818  updatedNode.flags = 0;
819  XCTAssertFalse([object nodeShouldTriggerAnnouncement:&updatedNode]);
820 
821  // Handle adding the flag when the label has not changed.
822  updatedNode.label = "foo";
823  [object setSemanticsNode:&updatedNode];
824  XCTAssertTrue([object nodeShouldTriggerAnnouncement:&node]);
825 }
826 
827 - (void)testShouldDispatchShowOnScreenActionForHeader {
828  fml::WeakPtrFactory<flutter::testing::MockAccessibilityBridge> factory(
829  new flutter::testing::MockAccessibilityBridge());
830  fml::WeakPtr<flutter::testing::MockAccessibilityBridge> bridge = factory.GetWeakPtr();
831  SemanticsObject* object = [[SemanticsObject alloc] initWithBridge:bridge uid:1];
832 
833  // Handle initial setting of node with header.
834  flutter::SemanticsNode node;
835  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kIsHeader);
836  node.label = "foo";
837 
838  [object setSemanticsNode:&node];
839 
840  // Simulate accessibility focus.
841  [object accessibilityElementDidBecomeFocused];
842 
843  XCTAssertTrue(bridge->observations.size() == 1);
844  XCTAssertTrue(bridge->observations[0].id == 1);
845  XCTAssertTrue(bridge->observations[0].action == flutter::SemanticsAction::kShowOnScreen);
846 }
847 
848 - (void)testShouldDispatchShowOnScreenActionForHidden {
849  fml::WeakPtrFactory<flutter::testing::MockAccessibilityBridge> factory(
850  new flutter::testing::MockAccessibilityBridge());
851  fml::WeakPtr<flutter::testing::MockAccessibilityBridge> bridge = factory.GetWeakPtr();
852  SemanticsObject* object = [[SemanticsObject alloc] initWithBridge:bridge uid:1];
853 
854  // Handle initial setting of node with hidden.
855  flutter::SemanticsNode node;
856  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kIsHidden);
857  node.label = "foo";
858 
859  [object setSemanticsNode:&node];
860 
861  // Simulate accessibility focus.
862  [object accessibilityElementDidBecomeFocused];
863 
864  XCTAssertTrue(bridge->observations.size() == 1);
865  XCTAssertTrue(bridge->observations[0].id == 1);
866  XCTAssertTrue(bridge->observations[0].action == flutter::SemanticsAction::kShowOnScreen);
867 }
868 
869 - (void)testFlutterSwitchSemanticsObjectMatchesUISwitch {
870  fml::WeakPtrFactory<flutter::testing::MockAccessibilityBridge> factory(
871  new flutter::testing::MockAccessibilityBridge());
872  fml::WeakPtr<flutter::testing::MockAccessibilityBridge> bridge = factory.GetWeakPtr();
873  FlutterSwitchSemanticsObject* object = [[FlutterSwitchSemanticsObject alloc] initWithBridge:bridge
874  uid:1];
875 
876  // Handle initial setting of node with header.
877  flutter::SemanticsNode node;
878  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasToggledState) |
879  static_cast<int32_t>(flutter::SemanticsFlags::kIsToggled) |
880  static_cast<int32_t>(flutter::SemanticsFlags::kIsEnabled);
881  node.label = "foo";
882  [object setSemanticsNode:&node];
883  // Create ab real UISwitch to compare the FlutterSwitchSemanticsObject with.
884  UISwitch* nativeSwitch = [[UISwitch alloc] init];
885  nativeSwitch.on = YES;
886 
887  XCTAssertEqual(object.accessibilityTraits, nativeSwitch.accessibilityTraits);
888  XCTAssertEqualObjects(object.accessibilityValue, nativeSwitch.accessibilityValue);
889 
890  // Set the toggled to false;
891  flutter::SemanticsNode update;
892  update.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasToggledState) |
893  static_cast<int32_t>(flutter::SemanticsFlags::kIsEnabled);
894  update.label = "foo";
895  [object setSemanticsNode:&update];
896 
897  nativeSwitch.on = NO;
898 
899  XCTAssertEqual(object.accessibilityTraits, nativeSwitch.accessibilityTraits);
900  XCTAssertEqualObjects(object.accessibilityValue, nativeSwitch.accessibilityValue);
901 }
902 
903 - (void)testFlutterSemanticsObjectOfRadioButton {
904  fml::WeakPtrFactory<flutter::testing::MockAccessibilityBridge> factory(
905  new flutter::testing::MockAccessibilityBridge());
906  fml::WeakPtr<flutter::testing::MockAccessibilityBridge> bridge = factory.GetWeakPtr();
907  FlutterSemanticsObject* object = [[FlutterSemanticsObject alloc] initWithBridge:bridge uid:0];
908 
909  // Handle initial setting of node with header.
910  flutter::SemanticsNode node;
911  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kIsInMutuallyExclusiveGroup) |
912  static_cast<int32_t>(flutter::SemanticsFlags::kHasCheckedState) |
913  static_cast<int32_t>(flutter::SemanticsFlags::kHasEnabledState) |
914  static_cast<int32_t>(flutter::SemanticsFlags::kIsEnabled);
915  node.label = "foo";
916  [object setSemanticsNode:&node];
917  XCTAssertTrue((object.accessibilityTraits & UIAccessibilityTraitButton) > 0);
918  XCTAssertNil(object.accessibilityValue);
919 }
920 
921 - (void)testFlutterSwitchSemanticsObjectMatchesUISwitchDisabled {
922  fml::WeakPtrFactory<flutter::testing::MockAccessibilityBridge> factory(
923  new flutter::testing::MockAccessibilityBridge());
924  fml::WeakPtr<flutter::testing::MockAccessibilityBridge> bridge = factory.GetWeakPtr();
925  FlutterSwitchSemanticsObject* object = [[FlutterSwitchSemanticsObject alloc] initWithBridge:bridge
926  uid:1];
927 
928  // Handle initial setting of node with header.
929  flutter::SemanticsNode node;
930  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasToggledState) |
931  static_cast<int32_t>(flutter::SemanticsFlags::kIsToggled);
932  node.label = "foo";
933  [object setSemanticsNode:&node];
934  // Create ab real UISwitch to compare the FlutterSwitchSemanticsObject with.
935  UISwitch* nativeSwitch = [[UISwitch alloc] init];
936  nativeSwitch.on = YES;
937  nativeSwitch.enabled = NO;
938 
939  XCTAssertEqual(object.accessibilityTraits, nativeSwitch.accessibilityTraits);
940  XCTAssertEqualObjects(object.accessibilityValue, nativeSwitch.accessibilityValue);
941 }
942 
943 - (void)testSemanticsObjectDeallocated {
944  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
945  new flutter::testing::MockAccessibilityBridge());
946  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
947  SemanticsObject* parent = [[SemanticsObject alloc] initWithBridge:bridge uid:0];
948  SemanticsObject* child = [[SemanticsObject alloc] initWithBridge:bridge uid:1];
949  parent.children = @[ child ];
950  // Validate SemanticsObject deallocation does not crash.
951  // https://github.com/flutter/flutter/issues/66032
952  __weak SemanticsObject* weakObject = parent;
953  parent = nil;
954  XCTAssertNil(weakObject);
955 }
956 
957 - (void)testFlutterSemanticsObjectReturnsNilContainerWhenBridgeIsNotAlive {
958  FlutterSemanticsObject* parentObject;
959  FlutterScrollableSemanticsObject* scrollable;
960  FlutterSemanticsObject* object2;
961 
962  flutter::SemanticsNode parent;
963  parent.id = 0;
964  parent.rect = SkRect::MakeXYWH(0, 0, 100, 200);
965  parent.label = "label";
966  parent.value = "value";
967  parent.hint = "hint";
968 
969  flutter::SemanticsNode node;
970  node.id = 1;
971  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling);
972  node.actions = flutter::kHorizontalScrollSemanticsActions;
973  node.rect = SkRect::MakeXYWH(0, 0, 100, 200);
974  node.label = "label";
975  node.value = "value";
976  node.hint = "hint";
977  node.scrollExtentMax = 100.0;
978  node.scrollPosition = 0.0;
979  parent.childrenInTraversalOrder.push_back(1);
980 
981  flutter::SemanticsNode node2;
982  node2.id = 2;
983  node2.rect = SkRect::MakeXYWH(0, 0, 100, 200);
984  node2.label = "label";
985  node2.value = "value";
986  node2.hint = "hint";
987  node2.scrollExtentMax = 100.0;
988  node2.scrollPosition = 0.0;
989  parent.childrenInTraversalOrder.push_back(2);
990 
991  {
992  flutter::testing::MockAccessibilityBridge* mock =
993  new flutter::testing::MockAccessibilityBridge();
994  mock->isVoiceOverRunningValue = true;
995  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(mock);
996  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
997 
998  parentObject = [[FlutterSemanticsObject alloc] initWithBridge:bridge uid:0];
999  [parentObject setSemanticsNode:&parent];
1000 
1001  scrollable = [[FlutterScrollableSemanticsObject alloc] initWithBridge:bridge uid:1];
1002  [scrollable setSemanticsNode:&node];
1003  [scrollable accessibilityBridgeDidFinishUpdate];
1004 
1005  object2 = [[FlutterSemanticsObject alloc] initWithBridge:bridge uid:2];
1006  [object2 setSemanticsNode:&node2];
1007 
1008  parentObject.children = @[ scrollable, object2 ];
1009  [parentObject accessibilityBridgeDidFinishUpdate];
1010  [scrollable accessibilityBridgeDidFinishUpdate];
1011  [object2 accessibilityBridgeDidFinishUpdate];
1012 
1013  // Returns the correct container if the bridge is alive.
1014  SemanticsObjectContainer* container =
1015  static_cast<SemanticsObjectContainer*>(scrollable.accessibilityContainer);
1016  XCTAssertEqual(container.semanticsObject, parentObject);
1017  SemanticsObjectContainer* container2 =
1018  static_cast<SemanticsObjectContainer*>(object2.accessibilityContainer);
1019  XCTAssertEqual(container2.semanticsObject, parentObject);
1020  }
1021  // The bridge pointer went out of scope and was deallocated.
1022 
1023  XCTAssertNil(scrollable.accessibilityContainer);
1024  XCTAssertNil(object2.accessibilityContainer);
1025 }
1026 
1027 - (void)testAccessibilityHitTestSearchCanReturnPlatformView {
1028  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
1029  new flutter::testing::MockAccessibilityBridge());
1030  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
1031  SemanticsObject* object0 = [[SemanticsObject alloc] initWithBridge:bridge uid:0];
1032  SemanticsObject* object1 = [[SemanticsObject alloc] initWithBridge:bridge uid:1];
1033  SemanticsObject* object3 = [[SemanticsObject alloc] initWithBridge:bridge uid:3];
1034  FlutterTouchInterceptingView* platformView =
1035  [[FlutterTouchInterceptingView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
1036  FlutterPlatformViewSemanticsContainer* platformViewSemanticsContainer =
1037  [[FlutterPlatformViewSemanticsContainer alloc] initWithBridge:bridge
1038  uid:1
1039  platformView:platformView];
1040 
1041  object0.children = @[ object1 ];
1042  object0.childrenInHitTestOrder = @[ object1 ];
1043  object1.children = @[ platformViewSemanticsContainer, object3 ];
1044  object1.childrenInHitTestOrder = @[ platformViewSemanticsContainer, object3 ];
1045 
1046  flutter::SemanticsNode node0;
1047  node0.id = 0;
1048  node0.rect = SkRect::MakeXYWH(0, 0, 200, 200);
1049  node0.label = "0";
1050  [object0 setSemanticsNode:&node0];
1051 
1052  flutter::SemanticsNode node1;
1053  node1.id = 1;
1054  node1.rect = SkRect::MakeXYWH(0, 0, 200, 200);
1055  node1.label = "1";
1056  [object1 setSemanticsNode:&node1];
1057 
1058  flutter::SemanticsNode node2;
1059  node2.id = 2;
1060  node2.rect = SkRect::MakeXYWH(0, 0, 100, 100);
1061  node2.label = "2";
1062  [platformViewSemanticsContainer setSemanticsNode:&node2];
1063 
1064  flutter::SemanticsNode node3;
1065  node3.id = 3;
1066  node3.rect = SkRect::MakeXYWH(0, 0, 200, 200);
1067  node3.label = "3";
1068  [object3 setSemanticsNode:&node3];
1069 
1070  CGPoint point = CGPointMake(10, 10);
1071  id hitTestResult = [object0 _accessibilityHitTest:point withEvent:nil];
1072 
1073  XCTAssertEqual(hitTestResult, platformView);
1074 }
1075 
1076 - (void)testFlutterPlatformViewSemanticsContainer {
1077  fml::WeakPtrFactory<flutter::testing::MockAccessibilityBridge> factory(
1078  new flutter::testing::MockAccessibilityBridge());
1079  fml::WeakPtr<flutter::testing::MockAccessibilityBridge> bridge = factory.GetWeakPtr();
1080  __weak FlutterTouchInterceptingView* weakPlatformView;
1081  __weak FlutterPlatformViewSemanticsContainer* weakContainer;
1082  @autoreleasepool {
1083  FlutterTouchInterceptingView* platformView = [[FlutterTouchInterceptingView alloc] init];
1084  weakPlatformView = platformView;
1085 
1086  @autoreleasepool {
1087  FlutterPlatformViewSemanticsContainer* container =
1088  [[FlutterPlatformViewSemanticsContainer alloc] initWithBridge:bridge
1089  uid:1
1090  platformView:platformView];
1091  weakContainer = container;
1092  XCTAssertEqualObjects(platformView.accessibilityContainer, container);
1093  XCTAssertNotNil(weakPlatformView);
1094  XCTAssertNotNil(weakContainer);
1095  }
1096  // Check the variables are still lived.
1097  // `container` is `retain` in `platformView`, so it will not be nil here.
1098  XCTAssertNotNil(weakPlatformView);
1099  XCTAssertNotNil(weakContainer);
1100  }
1101  // Check if there's no more strong references to `platformView` after container and platformView
1102  // are released.
1103  XCTAssertNil(weakPlatformView);
1104  XCTAssertNil(weakContainer);
1105 }
1106 
1107 - (void)testTextInputSemanticsObject {
1108  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
1109  new flutter::testing::MockAccessibilityBridge());
1110  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
1111 
1112  flutter::SemanticsNode node;
1113  node.label = "foo";
1114  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kIsTextField) |
1115  static_cast<int32_t>(flutter::SemanticsFlags::kIsReadOnly);
1116  TextInputSemanticsObject* object = [[TextInputSemanticsObject alloc] initWithBridge:bridge uid:0];
1117  [object setSemanticsNode:&node];
1118  [object accessibilityBridgeDidFinishUpdate];
1119  XCTAssertEqual([object accessibilityTraits], UIAccessibilityTraitNone);
1120 }
1121 
1122 - (void)testTextInputSemanticsObject_canPerformAction {
1123  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
1124  new flutter::testing::MockAccessibilityBridge());
1125  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
1126 
1127  flutter::SemanticsNode node;
1128  node.label = "foo";
1129  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kIsTextField) |
1130  static_cast<int32_t>(flutter::SemanticsFlags::kIsReadOnly);
1131  TextInputSemanticsObject* object = [[TextInputSemanticsObject alloc] initWithBridge:bridge uid:0];
1132  [object setSemanticsNode:&node];
1133  [object accessibilityBridgeDidFinishUpdate];
1134 
1135  id textInputSurrogate = OCMClassMock([UIResponder class]);
1136  id partialSemanticsObject = OCMPartialMock(object);
1137  OCMStub([partialSemanticsObject textInputSurrogate]).andReturn(textInputSurrogate);
1138 
1139  OCMExpect([textInputSurrogate canPerformAction:[OCMArg anySelector] withSender:OCMOCK_ANY])
1140  .andReturn(YES);
1141  XCTAssertTrue([partialSemanticsObject canPerformAction:@selector(copy:) withSender:nil]);
1142 
1143  OCMExpect([textInputSurrogate canPerformAction:[OCMArg anySelector] withSender:OCMOCK_ANY])
1144  .andReturn(NO);
1145  XCTAssertFalse([partialSemanticsObject canPerformAction:@selector(copy:) withSender:nil]);
1146 }
1147 
1148 - (void)testTextInputSemanticsObject_editActions {
1149  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
1150  new flutter::testing::MockAccessibilityBridge());
1151  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
1152 
1153  flutter::SemanticsNode node;
1154  node.label = "foo";
1155  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kIsTextField) |
1156  static_cast<int32_t>(flutter::SemanticsFlags::kIsReadOnly);
1157  TextInputSemanticsObject* object = [[TextInputSemanticsObject alloc] initWithBridge:bridge uid:0];
1158  [object setSemanticsNode:&node];
1159  [object accessibilityBridgeDidFinishUpdate];
1160 
1161  id textInputSurrogate = OCMClassMock([UIResponder class]);
1162  id partialSemanticsObject = OCMPartialMock(object);
1163  OCMStub([partialSemanticsObject textInputSurrogate]).andReturn(textInputSurrogate);
1164 
1165  XCTestExpectation* copyExpectation =
1166  [self expectationWithDescription:@"Surrogate's copy method is called."];
1167  XCTestExpectation* cutExpectation =
1168  [self expectationWithDescription:@"Surrogate's cut method is called."];
1169  XCTestExpectation* pasteExpectation =
1170  [self expectationWithDescription:@"Surrogate's paste method is called."];
1171  XCTestExpectation* selectAllExpectation =
1172  [self expectationWithDescription:@"Surrogate's selectAll method is called."];
1173  XCTestExpectation* deleteExpectation =
1174  [self expectationWithDescription:@"Surrogate's delete method is called."];
1175 
1176  OCMStub([textInputSurrogate copy:OCMOCK_ANY]).andDo(^(NSInvocation* invocation) {
1177  [copyExpectation fulfill];
1178  });
1179  OCMStub([textInputSurrogate cut:OCMOCK_ANY]).andDo(^(NSInvocation* invocation) {
1180  [cutExpectation fulfill];
1181  });
1182  OCMStub([textInputSurrogate paste:OCMOCK_ANY]).andDo(^(NSInvocation* invocation) {
1183  [pasteExpectation fulfill];
1184  });
1185  OCMStub([textInputSurrogate selectAll:OCMOCK_ANY]).andDo(^(NSInvocation* invocation) {
1186  [selectAllExpectation fulfill];
1187  });
1188  OCMStub([textInputSurrogate delete:OCMOCK_ANY]).andDo(^(NSInvocation* invocation) {
1189  [deleteExpectation fulfill];
1190  });
1191 
1192  [partialSemanticsObject copy:nil];
1193  [partialSemanticsObject cut:nil];
1194  [partialSemanticsObject paste:nil];
1195  [partialSemanticsObject selectAll:nil];
1196  [partialSemanticsObject delete:nil];
1197 
1198  [self waitForExpectationsWithTimeout:1 handler:nil];
1199 }
1200 
1201 - (void)testSliderSemanticsObject {
1202  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
1203  new flutter::testing::MockAccessibilityBridge());
1204  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
1205 
1206  flutter::SemanticsNode node;
1207  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kIsSlider);
1208  SemanticsObject* object = [[SemanticsObject alloc] initWithBridge:bridge uid:0];
1209  [object setSemanticsNode:&node];
1210  [object accessibilityBridgeDidFinishUpdate];
1211  XCTAssertEqual([object accessibilityActivate], YES);
1212 }
1213 
1214 - (void)testUIFocusItemConformance {
1215  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
1216  new flutter::testing::MockAccessibilityBridge());
1217  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
1218  SemanticsObject* parent = [[SemanticsObject alloc] initWithBridge:bridge uid:0];
1219  SemanticsObject* child = [[SemanticsObject alloc] initWithBridge:bridge uid:1];
1220  parent.children = @[ child ];
1221 
1222  // parentFocusEnvironment
1223  XCTAssertTrue([parent.parentFocusEnvironment isKindOfClass:[UIView class]]);
1224  XCTAssertEqual(child.parentFocusEnvironment, child.parent);
1225 
1226  // canBecomeFocused
1227  flutter::SemanticsNode childNode;
1228  childNode.flags = static_cast<int32_t>(flutter::SemanticsFlags::kIsHidden);
1229  childNode.actions = static_cast<int32_t>(flutter::SemanticsAction::kTap);
1230  [child setSemanticsNode:&childNode];
1231  XCTAssertFalse(child.canBecomeFocused);
1232  childNode.flags = 0;
1233  [child setSemanticsNode:&childNode];
1234  XCTAssertTrue(child.canBecomeFocused);
1235  childNode.actions = 0;
1236  [child setSemanticsNode:&childNode];
1237  XCTAssertFalse(child.canBecomeFocused);
1238 
1239  CGFloat scale = ((bridge->view().window.screen ?: UIScreen.mainScreen)).scale;
1240 
1241  childNode.rect = SkRect::MakeXYWH(0, 0, 100 * scale, 100 * scale);
1242  [child setSemanticsNode:&childNode];
1243  flutter::SemanticsNode parentNode;
1244  parentNode.rect = SkRect::MakeXYWH(0, 0, 200, 200);
1245  [parent setSemanticsNode:&parentNode];
1246 
1247  XCTAssertTrue(CGRectEqualToRect(child.frame, CGRectMake(0, 0, 100, 100)));
1248 }
1249 
1250 - (void)testUIFocusItemContainerConformance {
1251  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
1252  new flutter::testing::MockAccessibilityBridge());
1253  fml::WeakPtr<flutter::AccessibilityBridgeIos> bridge = factory.GetWeakPtr();
1254  SemanticsObject* parent = [[SemanticsObject alloc] initWithBridge:bridge uid:0];
1255  SemanticsObject* child1 = [[SemanticsObject alloc] initWithBridge:bridge uid:1];
1256  SemanticsObject* child2 = [[SemanticsObject alloc] initWithBridge:bridge uid:2];
1257  parent.childrenInHitTestOrder = @[ child1, child2 ];
1258 
1259  // focusItemsInRect
1260  NSArray<id<UIFocusItem>>* itemsInRect = [parent focusItemsInRect:CGRectMake(0, 0, 100, 100)];
1261  XCTAssertEqual(itemsInRect.count, (unsigned long)2);
1262  XCTAssertTrue([itemsInRect containsObject:child1]);
1263  XCTAssertTrue([itemsInRect containsObject:child2]);
1264 }
1265 
1266 - (void)testUIFocusItemScrollableContainerConformance {
1267  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
1268  new flutter::testing::MockAccessibilityBridge());
1269  fml::WeakPtr<flutter::testing::MockAccessibilityBridge> bridge = factory.GetWeakPtr();
1270  FlutterScrollableSemanticsObject* scrollable =
1271  [[FlutterScrollableSemanticsObject alloc] initWithBridge:bridge uid:5];
1272 
1273  // setContentOffset
1274  CGPoint p = CGPointMake(123.0, 456.0);
1275  [scrollable.scrollView scrollViewWillEndDragging:scrollable.scrollView
1276  withVelocity:CGPointZero
1277  targetContentOffset:&p];
1278  scrollable.scrollView.contentOffset = p;
1279  [scrollable.scrollView scrollViewDidEndDecelerating:scrollable.scrollView];
1280  XCTAssertEqual(bridge->observations.size(), (size_t)1);
1281  XCTAssertEqual(bridge->observations[0].id, 5);
1282  XCTAssertEqual(bridge->observations[0].action, flutter::SemanticsAction::kScrollToOffset);
1283 
1284  std::vector<uint8_t> args = bridge->observations[0].args;
1285  XCTAssertEqual(args.size(), 3 * sizeof(CGFloat));
1286 
1287  NSData* encoded = [NSData dataWithBytes:args.data() length:args.size()];
1288  FlutterStandardTypedData* decoded = [[FlutterStandardMessageCodec sharedInstance] decode:encoded];
1289  CGPoint point = CGPointZero;
1290  memcpy(&point, decoded.data.bytes, decoded.data.length);
1291  XCTAssertTrue(CGPointEqualToPoint(point, p));
1292 }
1293 
1294 - (void)testUIFocusItemScrollableContainerNoFeedbackLoops {
1295  fml::WeakPtrFactory<flutter::AccessibilityBridgeIos> factory(
1296  new flutter::testing::MockAccessibilityBridge());
1297  fml::WeakPtr<flutter::testing::MockAccessibilityBridge> bridge = factory.GetWeakPtr();
1298  FlutterScrollableSemanticsObject* scrollable =
1299  [[FlutterScrollableSemanticsObject alloc] initWithBridge:bridge uid:5];
1300 
1301  // setContentOffset
1302  const CGPoint p = CGPointMake(0.0, 456.0);
1303  scrollable.scrollView.contentOffset = p;
1304  bridge->observations.clear();
1305 
1306  const SkScalar scrollPosition = p.y + 0.0000000000000001;
1307  flutter::SemanticsNode node;
1308  node.flags = static_cast<int32_t>(flutter::SemanticsFlags::kHasImplicitScrolling);
1309  node.actions = flutter::kVerticalScrollSemanticsActions;
1310  node.rect = SkRect::MakeXYWH(0, 0, 100, 200);
1311  node.scrollExtentMax = 10000;
1312  node.scrollPosition = scrollPosition;
1313  node.transform = {1.0, 0, 0, 0, 0, 1.0, 0, 0, 0, 0, 1.0, 0, 0, scrollPosition, 0, 1.0};
1314  [scrollable setSemanticsNode:&node];
1315  [scrollable accessibilityBridgeDidFinishUpdate];
1316 
1317  XCTAssertEqual(bridge->observations.size(), (size_t)0);
1318 }
1319 @end
FlutterPlatformViews_Internal.h
FlutterTouchInterceptingView_Test.h
kScrollExtentMaxForInf
constexpr float kScrollExtentMaxForInf
Definition: SemanticsObject.h:18
kFloatCompareEpsilon
FLUTTER_ASSERT_ARC const float kFloatCompareEpsilon
Definition: SemanticsObjectTest.mm:18
TextInputSemanticsObject.h
TextInputSemanticsObject(Test)
Definition: SemanticsObjectTest.mm:27
-[TextInputSemanticsObject(Test) textInputSurrogate]
UIView< UITextInput > * textInputSurrogate()
FlutterScrollableSemanticsObject::scrollView
FlutterSemanticsScrollView * scrollView
Definition: SemanticsObject.h:190
SemanticsObjectContainer::semanticsObject
SemanticsObject * semanticsObject
Definition: SemanticsObject.h:235
-[SemanticsObject _accessibilityHitTest:withEvent:]
id _accessibilityHitTest:withEvent:(CGPoint point,[withEvent] UIEvent *event)
SemanticsObject::parent
SemanticsObject * parent
Definition: SemanticsObject.h:42
SemanticsObject::childrenInHitTestOrder
NSArray< SemanticsObject * > * childrenInHitTestOrder
Definition: SemanticsObject.h:74
-[SemanticsObject accessibilityScrollToVisibleWithChild:]
BOOL accessibilityScrollToVisibleWithChild:(id child)
-[SemanticsObject accessibilityBridgeDidFinishUpdate]
void accessibilityBridgeDidFinishUpdate()
Definition: SemanticsObject.mm:337
-[SemanticsObject accessibilityScrollToVisible]
BOOL accessibilityScrollToVisible()
SemanticsObject::children
NSArray< SemanticsObject * > * children
Definition: SemanticsObject.h:68
-[SemanticsObject replaceChildAtIndex:withChild:]
void replaceChildAtIndex:withChild:(NSInteger index,[withChild] SemanticsObject *child)
Definition: SemanticsObject.mm:374
-[SemanticsObject setSemanticsNode:]
void setSemanticsNode:(const flutter::SemanticsNode *NS_REQUIRES_SUPER)
Definition: SemanticsObject.mm:333
TextInputSemanticsObject
Definition: TextInputSemanticsObject.h:20
FLUTTER_ASSERT_ARC
Definition: FlutterChannelKeyResponder.mm:13
+[FlutterMessageCodec-p sharedInstance]
instancetype sharedInstance()