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
|
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/extensions/api/automation_internal/automation_event_router.h"
#include <algorithm>
#include <string>
#include <utility>
#include "base/stl_util.h"
#include "base/values.h"
#include "chrome/common/extensions/api/automation_internal.h"
#include "chrome/common/extensions/chrome_extension_messages.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/notification_types.h"
#include "content/public/browser/render_process_host.h"
#include "extensions/browser/event_router.h"
#include "ui/accessibility/ax_enums.h"
#include "ui/accessibility/ax_node_data.h"
namespace extensions {
// static
AutomationEventRouter* AutomationEventRouter::GetInstance() {
return Singleton<AutomationEventRouter,
LeakySingletonTraits<AutomationEventRouter>>::get();
}
AutomationEventRouter::AutomationEventRouter() {
registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_TERMINATED,
content::NotificationService::AllBrowserContextsAndSources());
registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_CLOSED,
content::NotificationService::AllBrowserContextsAndSources());
}
AutomationEventRouter::~AutomationEventRouter() {
}
void AutomationEventRouter::RegisterListenerForOneTree(
int listener_process_id,
int listener_routing_id,
int source_ax_tree_id) {
Register(listener_process_id, listener_routing_id, source_ax_tree_id, false);
}
void AutomationEventRouter::RegisterListenerWithDesktopPermission(
int listener_process_id,
int listener_routing_id) {
Register(listener_process_id, listener_routing_id, 0, true);
}
void AutomationEventRouter::DispatchAccessibilityEvent(
const ExtensionMsg_AccessibilityEventParams& params) {
for (const auto& listener : listeners_) {
if (!listener.desktop &&
listener.tree_ids.find(params.tree_id) == listener.tree_ids.end()) {
continue;
}
content::RenderProcessHost* rph =
content::RenderProcessHost::FromID(listener.process_id);
rph->Send(new ExtensionMsg_AccessibilityEvent(listener.routing_id,
params));
}
}
void AutomationEventRouter::DispatchTreeDestroyedEvent(
int tree_id,
content::BrowserContext* browser_context) {
scoped_ptr<base::ListValue> args(
api::automation_internal::OnAccessibilityTreeDestroyed::Create(tree_id));
scoped_ptr<Event> event(new Event(
events::AUTOMATION_INTERNAL_ON_ACCESSIBILITY_TREE_DESTROYED,
api::automation_internal::OnAccessibilityTreeDestroyed::kEventName,
args.Pass()));
event->restrict_to_browser_context = browser_context;
EventRouter::Get(browser_context)->BroadcastEvent(event.Pass());
}
AutomationEventRouter::AutomationListener::AutomationListener() {
}
AutomationEventRouter::AutomationListener::~AutomationListener() {
}
void AutomationEventRouter::Register(
int listener_process_id,
int listener_routing_id,
int ax_tree_id,
bool desktop) {
auto iter = std::find_if(
listeners_.begin(),
listeners_.end(),
[listener_process_id, listener_routing_id](
const AutomationListener& item) {
return (item.process_id == listener_process_id &&
item.routing_id == listener_routing_id);
});
// Add a new entry if we don't have one with that process and routing id.
if (iter == listeners_.end()) {
AutomationListener listener;
listener.routing_id = listener_routing_id;
listener.process_id = listener_process_id;
listener.desktop = desktop;
listener.tree_ids.insert(ax_tree_id);
listeners_.push_back(listener);
return;
}
// We have an entry with that process and routing id, so update the set of
// tree ids it wants to listen to, and update its desktop permission.
iter->tree_ids.insert(ax_tree_id);
if (desktop)
iter->desktop = true;
}
void AutomationEventRouter::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
if (type != content::NOTIFICATION_RENDERER_PROCESS_TERMINATED &&
type != content::NOTIFICATION_RENDERER_PROCESS_CLOSED) {
NOTREACHED();
return;
}
content::RenderProcessHost* rph =
content::Source<content::RenderProcessHost>(source).ptr();
int process_id = rph->GetID();
listeners_.erase(
std::remove_if(
listeners_.begin(),
listeners_.end(),
[process_id](const AutomationListener& item) {
return item.process_id == process_id;
}),
listeners_.end());
}
} // namespace extensions
|
