1 // Copyright 2013 The Chromium 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.
5 #include "content/test/accessibility_browser_test_utils.h"
8 #include "base/logging.h"
9 #include "base/strings/string_util.h"
10 #include "base/strings/utf_string_conversions.h"
11 #include "content/browser/renderer_host/render_view_host_impl.h"
12 #include "content/common/view_message_enums.h"
13 #include "content/port/browser/render_widget_host_view_port.h"
14 #include "content/public/browser/web_contents.h"
15 #include "content/public/common/url_constants.h"
16 #include "content/public/test/test_utils.h"
17 #include "content/shell/browser/shell.h"
18 #include "ui/accessibility/ax_node.h"
22 AccessibilityNotificationWaiter::AccessibilityNotificationWaiter(
24 AccessibilityMode accessibility_mode,
25 ui::AXEvent event_type)
27 event_to_wait_for_(event_type),
28 loop_runner_(new MessageLoopRunner()),
30 WebContents* web_contents = shell_->web_contents();
31 view_host_ = static_cast<RenderViewHostImpl*>(
32 web_contents->GetRenderViewHost());
33 view_host_->SetAccessibilityCallbackForTesting(
34 base::Bind(&AccessibilityNotificationWaiter::OnAccessibilityEvent,
35 weak_factory_.GetWeakPtr()));
36 view_host_->AddAccessibilityMode(accessibility_mode);
39 AccessibilityNotificationWaiter::~AccessibilityNotificationWaiter() {
42 void AccessibilityNotificationWaiter::WaitForNotification() {
46 const ui::AXTree& AccessibilityNotificationWaiter::GetAXTree() const {
47 return view_host_->ax_tree_for_testing();
50 void AccessibilityNotificationWaiter::OnAccessibilityEvent(
51 ui::AXEvent event_type) {
52 if (!IsAboutBlank() && event_to_wait_for_ == event_type)
56 bool AccessibilityNotificationWaiter::IsAboutBlank() {
57 // Skip any accessibility notifications related to "about:blank",
58 // to avoid a possible race condition between the test beginning
59 // listening for accessibility events and "about:blank" loading.
60 const ui::AXNodeData& root = GetAXTree().GetRoot()->data();
61 for (size_t i = 0; i < root.string_attributes.size(); ++i) {
62 if (root.string_attributes[i].first != ui::AX_ATTR_DOC_URL)
64 const std::string& doc_url = root.string_attributes[i].second;
65 return doc_url == kAboutBlankURL;
70 } // namespace content