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
|
// Copyright 2013 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 "content/test/accessibility_browser_test_utils.h"
#include "base/bind.h"
#include "base/logging.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "content/browser/frame_host/render_frame_host_impl.h"
#include "content/browser/renderer_host/render_widget_host_view_base.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/common/view_message_enums.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/url_constants.h"
#include "content/public/test/test_utils.h"
#include "content/shell/browser/shell.h"
#include "ui/accessibility/ax_node.h"
namespace content {
AccessibilityNotificationWaiter::AccessibilityNotificationWaiter(Shell* shell)
: event_to_wait_for_(ui::AX_EVENT_NONE),
loop_runner_(new MessageLoopRunner()),
event_target_id_(0),
weak_factory_(this) {
WebContents* web_contents = shell->web_contents();
frame_host_ = static_cast<RenderFrameHostImpl*>(
web_contents->GetMainFrame());
frame_host_->SetAccessibilityCallbackForTesting(
base::Bind(&AccessibilityNotificationWaiter::OnAccessibilityEvent,
weak_factory_.GetWeakPtr()));
}
AccessibilityNotificationWaiter::AccessibilityNotificationWaiter(
Shell* shell,
AccessibilityMode accessibility_mode,
ui::AXEvent event_type)
: event_to_wait_for_(event_type),
loop_runner_(new MessageLoopRunner()),
event_target_id_(0),
weak_factory_(this) {
WebContentsImpl* web_contents = static_cast<WebContentsImpl*>(
shell->web_contents());
frame_host_ = static_cast<RenderFrameHostImpl*>(
web_contents->GetMainFrame());
frame_host_->SetAccessibilityCallbackForTesting(
base::Bind(&AccessibilityNotificationWaiter::OnAccessibilityEvent,
weak_factory_.GetWeakPtr()));
web_contents->AddAccessibilityMode(accessibility_mode);
}
AccessibilityNotificationWaiter::AccessibilityNotificationWaiter(
RenderFrameHostImpl* frame_host,
ui::AXEvent event_type)
: frame_host_(frame_host),
event_to_wait_for_(event_type),
loop_runner_(new MessageLoopRunner()),
event_target_id_(0),
weak_factory_(this) {
frame_host_->SetAccessibilityCallbackForTesting(
base::Bind(&AccessibilityNotificationWaiter::OnAccessibilityEvent,
weak_factory_.GetWeakPtr()));
}
AccessibilityNotificationWaiter::~AccessibilityNotificationWaiter() {
}
void AccessibilityNotificationWaiter::ListenToAdditionalFrame(
RenderFrameHostImpl* frame_host) {
frame_host->SetAccessibilityCallbackForTesting(
base::Bind(&AccessibilityNotificationWaiter::OnAccessibilityEvent,
weak_factory_.GetWeakPtr()));
}
void AccessibilityNotificationWaiter::WaitForNotification() {
loop_runner_->Run();
// Each loop runner can only be called once. Create a new one in case
// the caller wants to call this again to wait for the next notification.
loop_runner_ = new MessageLoopRunner();
}
const ui::AXTree& AccessibilityNotificationWaiter::GetAXTree() const {
CR_DEFINE_STATIC_LOCAL(ui::AXTree, empty_tree, ());
const ui::AXTree* tree = frame_host_->GetAXTreeForTesting();
if (tree)
return *tree;
return empty_tree;
}
void AccessibilityNotificationWaiter::OnAccessibilityEvent(
ui::AXEvent event_type, int event_target_id) {
if (!IsAboutBlank() && (event_to_wait_for_ == ui::AX_EVENT_NONE ||
event_to_wait_for_ == event_type)) {
event_target_id_ = event_target_id;
loop_runner_->Quit();
}
}
bool AccessibilityNotificationWaiter::IsAboutBlank() {
// Skip any accessibility notifications related to "about:blank",
// to avoid a possible race condition between the test beginning
// listening for accessibility events and "about:blank" loading.
return GetAXTree().data().url == url::kAboutBlankURL;
}
} // namespace content
|
