1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
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
123
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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
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
341
342
343
344
345
346
347
348
349
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
|
// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ash/arc/accessibility/arc_accessibility_tree_tracker.h"
#include "ash/public/cpp/app_types_util.h"
#include "base/memory/raw_ptr.h"
#include "chrome/browser/ash/arc/accessibility/accessibility_helper_instance_remote_proxy.h"
#include "chrome/test/base/testing_profile.h"
#include "chrome/test/views/chrome_views_test_base.h"
#include "chromeos/ash/experiences/arc/arc_util.h"
#include "chromeos/ash/experiences/arc/session/arc_bridge_service.h"
#include "chromeos/ui/base/app_types.h"
#include "chromeos/ui/base/window_properties.h"
#include "components/exo/shell_surface_util.h"
#include "services/accessibility/android/android_accessibility_util.h"
#include "services/accessibility/android/public/mojom/accessibility_helper.mojom.h"
#include "services/accessibility/android/test/android_accessibility_test_util.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/window.h"
#include "ui/aura/window_tracker.h"
namespace arc {
class ArcAccessibilityTreeTrackerTest : public ChromeViewsTestBase {
public:
class TestArcAccessibilityTreeTracker : public ArcAccessibilityTreeTracker {
public:
TestArcAccessibilityTreeTracker(
Profile* const profile,
const AccessibilityHelperInstanceRemoteProxy&
accessibility_helper_instance,
ArcBridgeService* const arc_bridge_service)
: ArcAccessibilityTreeTracker(nullptr,
profile,
accessibility_helper_instance,
arc_bridge_service) {}
raw_ptr<aura::Window, DanglingUntriaged> focused_window_ = nullptr;
std::optional<bool> last_dispatched_talkback_state_;
void TrackWindow(aura::Window* window) {
ArcAccessibilityTreeTracker::TrackWindow(window);
}
private:
aura::Window* GetFocusedArcWindow() const override {
return focused_window_;
}
void DispatchCustomSpokenFeedbackToggled(bool enabled) override {
last_dispatched_talkback_state_ = enabled;
}
};
ArcAccessibilityTreeTrackerTest()
: helper_instance_(&bridge_service_),
tree_tracker_(&testing_profile_, helper_instance_, &bridge_service_) {}
TestArcAccessibilityTreeTracker& accessibility_tree_tracker() {
return tree_tracker_;
}
std::unique_ptr<aura::Window> CreateWindow(
chromeos::AppType app_type = chromeos::AppType::ARC_APP) {
auto window = std::make_unique<aura::Window>(nullptr);
window->Init(ui::LAYER_NOT_DRAWN);
window->SetProperty(chromeos::kAppTypeKey, app_type);
return window;
}
private:
TestingProfile testing_profile_;
ArcBridgeService bridge_service_;
const AccessibilityHelperInstanceRemoteProxy helper_instance_;
TestArcAccessibilityTreeTracker tree_tracker_;
};
TEST_F(ArcAccessibilityTreeTrackerTest, TaskAndAXTreeLifecycle) {
auto& tree_tracker = accessibility_tree_tracker();
tree_tracker.OnEnabledFeatureChanged(
ax::android::mojom::AccessibilityFilterType::ALL);
std::unique_ptr<aura::Window> test_window = CreateWindow();
tree_tracker.TrackWindow(test_window.get());
const auto& key_to_tree = tree_tracker.trees_for_test();
ASSERT_EQ(0U, key_to_tree.size());
auto event1 = ax::android::mojom::AccessibilityEventData::New();
event1->source_id = 1;
event1->task_id = 1;
// There's no window matches to the event.
ax::android::AXTreeSourceAndroid* tree =
tree_tracker.OnAccessibilityEvent(event1.Clone().get());
ASSERT_EQ(nullptr, tree);
ASSERT_EQ(0U, key_to_tree.size());
// Let's set task id to the window.
exo::SetShellApplicationId(test_window.get(), "org.chromium.arc.1");
tree = tree_tracker.OnAccessibilityEvent(event1.Clone().get());
ASSERT_NE(nullptr, tree);
ASSERT_EQ(1U, key_to_tree.size());
// Event from a different task.
auto event2 = ax::android::mojom::AccessibilityEventData::New();
event2->source_id = 2;
event2->task_id = 2;
// There's only task 1 window
tree = tree_tracker.OnAccessibilityEvent(event2.Clone().get());
ASSERT_EQ(nullptr, tree);
ASSERT_EQ(1U, key_to_tree.size());
// Now add a window for task 2.
std::unique_ptr<aura::Window> test_window2 = CreateWindow();
tree_tracker.TrackWindow(test_window2.get());
exo::SetShellApplicationId(test_window2.get(), "org.chromium.arc.2");
tree = tree_tracker.OnAccessibilityEvent(event2.Clone().get());
ASSERT_NE(nullptr, tree);
ASSERT_EQ(2U, key_to_tree.size());
// Same task id, different source node.
event2->source_id = 3;
// No new tasks tree mappings should have occurred.
tree = tree_tracker.OnAccessibilityEvent(event2.Clone().get());
ASSERT_NE(nullptr, tree);
ASSERT_EQ(2U, key_to_tree.size());
tree_tracker.OnWindowDestroying(test_window.get());
ASSERT_EQ(1U, key_to_tree.size());
tree_tracker.OnWindowDestroying(test_window2.get());
ASSERT_EQ(0U, key_to_tree.size());
}
TEST_F(ArcAccessibilityTreeTrackerTest, ReEnableTree) {
auto& tree_tracker = accessibility_tree_tracker();
tree_tracker.OnEnabledFeatureChanged(
ax::android::mojom::AccessibilityFilterType::ALL);
std::unique_ptr<aura::Window> test_window = CreateWindow();
exo::SetShellApplicationId(test_window.get(), "org.chromium.arc.1");
tree_tracker.TrackWindow(test_window.get());
std::unique_ptr<aura::Window> child_window =
CreateWindow(chromeos::AppType::NON_APP);
exo::SetShellClientAccessibilityId(child_window.get(), 10);
test_window->AddChild(child_window.get());
const auto& key_to_tree = tree_tracker.trees_for_test();
ASSERT_EQ(1U, key_to_tree.size());
auto event = ax::android::mojom::AccessibilityEventData::New();
event->source_id = 1;
event->task_id = kNoTaskId;
event->window_id = 10;
// On the event, tree is tracked.
ax::android::AXTreeSourceAndroid* tree =
tree_tracker.OnAccessibilityEvent(event.Clone().get());
ASSERT_NE(nullptr, tree);
// Disables accessibility, and no tree is tracked.
tree_tracker.OnEnabledFeatureChanged(
ax::android::mojom::AccessibilityFilterType::OFF);
ASSERT_EQ(0U, key_to_tree.size());
// Enables accessibility again, and tree is tracked.
tree_tracker.OnEnabledFeatureChanged(
ax::android::mojom::AccessibilityFilterType::ALL);
tree_tracker.TrackWindow(test_window.get());
tree = tree_tracker.OnAccessibilityEvent(event.Clone().get());
ASSERT_EQ(1U, key_to_tree.size());
ASSERT_NE(nullptr, tree);
}
TEST_F(ArcAccessibilityTreeTrackerTest, WindowIdTaskIdMapping) {
auto& tree_tracker = accessibility_tree_tracker();
std::unique_ptr<aura::Window> test_window = CreateWindow();
tree_tracker.OnEnabledFeatureChanged(
ax::android::mojom::AccessibilityFilterType::ALL);
const auto& key_to_tree = tree_tracker.trees_for_test();
ASSERT_EQ(0U, key_to_tree.size());
auto event = ax::android::mojom::AccessibilityEventData::New();
event->source_id = 1;
event->task_id = kNoTaskId;
event->window_id = 10;
// There's no tracking window.
tree_tracker.OnAccessibilityEvent(event.Clone().get());
ASSERT_EQ(0U, key_to_tree.size());
// Set task ID 1 to the window.
// Also, set a11y window id to a child window.
tree_tracker.TrackWindow(test_window.get());
exo::SetShellApplicationId(test_window.get(), "org.chromium.arc.1");
std::unique_ptr<aura::Window> child_window1 =
CreateWindow(chromeos::AppType::NON_APP);
exo::SetShellClientAccessibilityId(child_window1.get(), 10);
test_window->AddChild(child_window1.get());
ax::android::AXTreeSourceAndroid* tree1 =
tree_tracker.OnAccessibilityEvent(event.Clone().get());
ASSERT_NE(nullptr, tree1);
ASSERT_EQ(1U, key_to_tree.size());
// Add another child window with different id. (and call AddChild first.)
std::unique_ptr<aura::Window> child_window2 =
CreateWindow(chromeos::AppType::NON_APP);
test_window->AddChild(child_window2.get());
exo::SetShellClientAccessibilityId(child_window2.get(), 11);
event->window_id = 11;
ax::android::AXTreeSourceAndroid* tree2 =
tree_tracker.OnAccessibilityEvent(event.Clone().get());
ASSERT_NE(nullptr, tree2);
ASSERT_EQ(1U, key_to_tree.size());
ASSERT_EQ(tree1, tree2); // The same tree.
// Put the window id back to 10, but exo window id is not updated yet.
// This emulates the case where a mojo events arrives before exo property.
event->window_id = 10;
ax::android::AXTreeSourceAndroid* tree3 =
tree_tracker.OnAccessibilityEvent(event.Clone().get());
ASSERT_NE(nullptr, tree3);
ASSERT_EQ(1U, key_to_tree.size());
ASSERT_EQ(tree1, tree3);
// Another task.
auto event2 = ax::android::mojom::AccessibilityEventData::New();
event2->source_id = 10;
event2->task_id = kNoTaskId;
event2->window_id = 20;
std::unique_ptr<aura::Window> another_window = CreateWindow();
exo::SetShellApplicationId(another_window.get(), "org.chromium.arc.2");
std::unique_ptr<aura::Window> another_child_window =
CreateWindow(chromeos::AppType::NON_APP);
exo::SetShellClientAccessibilityId(another_child_window.get(), 20);
another_window->AddChild(another_child_window.get());
tree_tracker.TrackWindow(another_window.get());
ax::android::AXTreeSourceAndroid* tree4 =
tree_tracker.OnAccessibilityEvent(event2.Clone().get());
ASSERT_NE(nullptr, tree4);
ASSERT_EQ(2U, key_to_tree.size());
ASSERT_NE(tree1, tree4);
}
TEST_F(ArcAccessibilityTreeTrackerTest, TrackArcGhostWindow) {
auto& tree_tracker = accessibility_tree_tracker();
tree_tracker.OnEnabledFeatureChanged(
ax::android::mojom::AccessibilityFilterType::ALL);
// Simulate a ghost window. Apply NON_APP type and session ID.
std::unique_ptr<aura::Window> test_window =
CreateWindow(chromeos::AppType::NON_APP);
exo::SetShellApplicationId(test_window.get(), "org.chromium.arc.session.1");
tree_tracker.TrackWindow(test_window.get());
const auto& key_to_tree = tree_tracker.trees_for_test();
ASSERT_EQ(0U, key_to_tree.size());
auto event = ax::android::mojom::AccessibilityEventData::New();
event->source_id = 1;
event->task_id = kNoTaskId;
event->window_id = 10;
// The window properties are not updated yet. a11y event is ignored.
tree_tracker.OnAccessibilityEvent(event.Clone().get());
ASSERT_EQ(0U, key_to_tree.size());
// A ghost window is replaced with an actual ARC window.
exo::SetShellApplicationId(test_window.get(), "org.chromium.arc.1");
test_window->SetProperty(chromeos::kAppTypeKey, chromeos::AppType::ARC_APP);
std::unique_ptr<aura::Window> child_window =
CreateWindow(chromeos::AppType::NON_APP);
exo::SetShellClientAccessibilityId(child_window.get(), 10);
test_window->AddChild(child_window.get());
tree_tracker.OnAccessibilityEvent(event.Clone().get());
ASSERT_EQ(1U, key_to_tree.size());
}
TEST_F(ArcAccessibilityTreeTrackerTest, FilterTypeChange) {
using ax::android::mojom::AccessibilityFilterType;
auto& tree_tracker = accessibility_tree_tracker();
std::unique_ptr<aura::Window> test_window = CreateWindow();
exo::SetShellApplicationId(test_window.get(), "org.chromium.arc.1");
exo::SetShellClientAccessibilityId(test_window.get(), 10);
const auto& key_to_tree = tree_tracker.trees_for_test();
ASSERT_EQ(0U, key_to_tree.size());
tree_tracker.OnEnabledFeatureChanged(AccessibilityFilterType::ALL);
tree_tracker.TrackWindow(test_window.get());
ASSERT_EQ(1U, key_to_tree.size());
// Changing from ALL to OFF should result in existing trees being destroyed.
tree_tracker.OnEnabledFeatureChanged(AccessibilityFilterType::OFF);
ASSERT_EQ(0U, key_to_tree.size());
// Changing from OFF to FOCUS should not result in any changes.
tree_tracker.OnEnabledFeatureChanged(AccessibilityFilterType::FOCUS);
ASSERT_EQ(0U, key_to_tree.size());
// Changing from FOCUS to ALL should not result in a existing tree recognized.
tree_tracker.OnEnabledFeatureChanged(AccessibilityFilterType::ALL);
tree_tracker.TrackWindow(test_window.get());
ASSERT_EQ(1U, key_to_tree.size());
// Changing from ALL to FOCUS should not result in any changes.
tree_tracker.OnEnabledFeatureChanged(AccessibilityFilterType::FOCUS);
ASSERT_EQ(0U, key_to_tree.size());
}
TEST_F(ArcAccessibilityTreeTrackerTest, ToggleTalkBack) {
auto& tree_tracker = accessibility_tree_tracker();
std::unique_ptr<aura::Window> test_window = CreateWindow();
tree_tracker.focused_window_ = test_window.get();
exo::SetShellApplicationId(test_window.get(), "org.chromium.arc.1");
std::optional<bool>& last_state =
tree_tracker.last_dispatched_talkback_state_;
ASSERT_FALSE(last_state.has_value());
// Enable TalkBack.
last_state.reset();
std::unique_ptr<aura::WindowTracker> window_tracker =
std::make_unique<aura::WindowTracker>();
window_tracker->Add(test_window.get());
tree_tracker.OnToggleNativeChromeVoxArcSupport(false);
ASSERT_TRUE(last_state.value());
std::unique_ptr<aura::Window> non_arc_window =
CreateWindow(chromeos::AppType::NON_APP);
// Switch to non-ARC window.
last_state.reset();
tree_tracker.OnWindowFocused(non_arc_window.get(), test_window.get());
ASSERT_FALSE(last_state.value());
// Switch back to ARC.
last_state.reset();
tree_tracker.OnWindowFocused(test_window.get(), non_arc_window.get());
ASSERT_TRUE(last_state.value());
// Disable TalkBack.
last_state.reset();
window_tracker = std::make_unique<aura::WindowTracker>();
window_tracker->Add(test_window.get());
tree_tracker.OnToggleNativeChromeVoxArcSupport(true);
ASSERT_FALSE(last_state.value());
}
} // namespace arc
|
