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
|
// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/renderer/api/automation/automation_internal_custom_bindings.h"
#include <stddef.h>
#include <stdint.h>
#include <algorithm>
#include <memory>
#include <set>
#include <string>
#include <utility>
#include "base/functional/bind.h"
#include "base/memory/ptr_util.h"
#include "base/task/single_thread_task_runner.h"
#include "base/values.h"
#include "content/public/renderer/render_frame.h"
#include "content/public/renderer/render_thread.h"
#include "content/public/renderer/worker_thread.h"
#include "extensions/common/api/automation.h"
#include "extensions/common/extension.h"
#include "extensions/common/manifest.h"
#include "extensions/common/manifest_handlers/automation.h"
#include "extensions/common/manifest_handlers/background_info.h"
#include "extensions/common/mojom/event_dispatcher.mojom.h"
#include "extensions/renderer/api/automation/automation_api_converters.h"
#include "extensions/renderer/ipc_message_sender.h"
#include "extensions/renderer/native_extension_bindings_system.h"
#include "extensions/renderer/object_backed_native_handler.h"
#include "extensions/renderer/script_context.h"
#include "ipc/message_filter.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "ui/accessibility/ax_event.h"
#include "ui/accessibility/ax_event_generator.h"
#include "ui/accessibility/platform/automation/automation_api_util.h"
#include "ui/accessibility/platform/automation/automation_ax_tree_wrapper.h"
#include "ui/accessibility/platform/automation/automation_tree_manager_owner.h"
#include "ui/accessibility/platform/automation/automation_v8_bindings.h"
#include "ui/accessibility/platform/automation/automation_v8_router.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/strings/grit/auto_image_annotation_strings.h"
namespace extensions {
AutomationInternalCustomBindings::AutomationInternalCustomBindings(
ScriptContext* context,
NativeExtensionBindingsSystem* bindings_system)
: ObjectBackedNativeHandler(context),
bindings_system_(bindings_system),
should_ignore_context_(false),
automation_v8_bindings_(
std::make_unique<ui::AutomationV8Bindings>(this, this)) {
// We will ignore this instance if the extension has a background page and
// this context is not that background page. In all other cases, we will have
// multiple instances floating around in the same process.
if (context && context->extension()) {
const GURL background_page_url =
extensions::BackgroundInfo::GetBackgroundURL(context->extension());
should_ignore_context_ =
background_page_url != "" && background_page_url != context->url();
}
}
AutomationInternalCustomBindings::~AutomationInternalCustomBindings() = default;
void AutomationInternalCustomBindings::AddRoutes() {
automation_v8_bindings_->AddV8Routes();
// Extensions specific routes.
ObjectBackedNativeHandler::RouteHandlerFunction(
"IsInteractPermitted", "automation",
base::BindRepeating(
&AutomationInternalCustomBindings::IsInteractPermitted,
base::Unretained(this)));
}
void AutomationInternalCustomBindings::Invalidate() {
ObjectBackedNativeHandler::Invalidate();
receiver_.reset();
AutomationTreeManagerOwner::Invalidate();
}
ui::AutomationV8Bindings*
AutomationInternalCustomBindings::GetAutomationV8Bindings() const {
DCHECK(automation_v8_bindings_);
return automation_v8_bindings_.get();
}
void AutomationInternalCustomBindings::IsInteractPermitted(
const v8::FunctionCallbackInfo<v8::Value>& args) const {
const Extension* extension = context()->extension();
CHECK(extension);
const AutomationInfo* automation_info = AutomationInfo::Get(extension);
CHECK(automation_info);
args.GetReturnValue().Set(automation_info->desktop);
}
void AutomationInternalCustomBindings::StartCachingAccessibilityTrees() {
if (should_ignore_context_)
return;
if (!receiver_.is_bound()) {
bindings_system_->GetIPCMessageSender()->SendBindAutomationIPC(
context(), receiver_.BindNewEndpointAndPassRemote());
}
}
void AutomationInternalCustomBindings::StopCachingAccessibilityTrees() {
receiver_.reset();
}
//
// Handle accessibility events from the browser process.
//
void AutomationInternalCustomBindings::ThrowInvalidArgumentsException(
bool is_fatal) const {
GetIsolate()->ThrowException(v8::String::NewFromUtf8Literal(
GetIsolate(),
"Invalid arguments to AutomationInternalCustomBindings function"));
if (!is_fatal)
return;
LOG(FATAL) << "Invalid arguments to AutomationInternalCustomBindings function"
<< context()->GetStackTraceAsString();
}
v8::Isolate* AutomationInternalCustomBindings::GetIsolate() const {
return ObjectBackedNativeHandler::GetIsolate();
}
v8::Local<v8::Context> AutomationInternalCustomBindings::GetContext() const {
return context()->v8_context();
}
void AutomationInternalCustomBindings::RouteHandlerFunction(
const std::string& name,
scoped_refptr<ui::V8HandlerFunctionWrapper> handler_function_wrapper) {
ObjectBackedNativeHandler::RouteHandlerFunction(
name, "automation",
base::BindRepeating(&ui::V8HandlerFunctionWrapper::RunV8,
handler_function_wrapper));
}
ui::TreeChangeObserverFilter
AutomationInternalCustomBindings::ParseTreeChangeObserverFilter(
const std::string& filter) const {
return ConvertAutomationTreeChangeObserverFilter(
api::automation::ParseTreeChangeObserverFilter(filter));
}
std::string AutomationInternalCustomBindings::GetMarkerTypeString(
ax::mojom::MarkerType type) const {
return api::automation::ToString(ConvertMarkerTypeFromAXToAutomation(type));
}
std::string AutomationInternalCustomBindings::GetFocusedStateString() const {
return api::automation::ToString(api::automation::StateType::kFocused);
}
std::string AutomationInternalCustomBindings::GetOffscreenStateString() const {
return api::automation::ToString(api::automation::StateType::kOffscreen);
}
void AutomationInternalCustomBindings::DispatchEvent(
const std::string& event_name,
const base::Value::List& event_args) const {
bindings_system_->DispatchEventInContext(event_name, event_args, nullptr,
context());
}
std::string
AutomationInternalCustomBindings::GetLocalizedStringForImageAnnotationStatus(
ax::mojom::ImageAnnotationStatus status) const {
int message_id = 0;
switch (status) {
case ax::mojom::ImageAnnotationStatus::kEligibleForAnnotation:
message_id = IDS_AX_IMAGE_ELIGIBLE_FOR_ANNOTATION;
break;
case ax::mojom::ImageAnnotationStatus::kAnnotationPending:
message_id = IDS_AX_IMAGE_ANNOTATION_PENDING;
break;
case ax::mojom::ImageAnnotationStatus::kAnnotationAdult:
message_id = IDS_AX_IMAGE_ANNOTATION_ADULT;
break;
case ax::mojom::ImageAnnotationStatus::kAnnotationEmpty:
case ax::mojom::ImageAnnotationStatus::kAnnotationProcessFailed:
message_id = IDS_AX_IMAGE_ANNOTATION_NO_DESCRIPTION;
break;
case ax::mojom::ImageAnnotationStatus::kNone:
case ax::mojom::ImageAnnotationStatus::kWillNotAnnotateDueToScheme:
case ax::mojom::ImageAnnotationStatus::kIneligibleForAnnotation:
case ax::mojom::ImageAnnotationStatus::kSilentlyEligibleForAnnotation:
case ax::mojom::ImageAnnotationStatus::kAnnotationSucceeded:
return std::string();
}
DCHECK(message_id);
return l10n_util::GetStringUTF8(message_id);
}
std::string AutomationInternalCustomBindings::GetTreeChangeTypeString(
ax::mojom::Mutation change_type) const {
return ToString(ConvertToAutomationTreeChangeType(change_type));
}
std::string AutomationInternalCustomBindings::GetEventTypeString(
const std::tuple<ax::mojom::Event, ui::AXEventGenerator::Event>& event_type)
const {
ui::AXEventGenerator::Event generated_event = std::get<1>(event_type);
// Resolve the proper event based on generated or non-generated event sources.
api::automation::EventType automation_event_type =
generated_event != ui::AXEventGenerator::Event::NONE
? AXGeneratedEventToAutomationEventType(generated_event)
: AXEventToAutomationEventType(std::get<0>(event_type));
return api::automation::ToString(automation_event_type);
}
void AutomationInternalCustomBindings::NotifyTreeEventListenersChanged() {
// This task is posted because we need to wait for any pending mutations
// to be processed before sending the event.
auto callback =
base::BindOnce(&AutomationInternalCustomBindings::
MaybeSendOnAllAutomationEventListenersRemoved,
weak_ptr_factory_.GetWeakPtr());
if (context()->IsForServiceWorker()) {
content::WorkerThread::PostTask(content::WorkerThread::GetCurrentId(),
std::move(callback));
} else {
context()
->web_frame()
->GetTaskRunner(blink::TaskType::kInternalDefault)
->PostTask(FROM_HERE, std::move(callback));
}
}
} // namespace extensions
|
