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// Copyright (c) 2010 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 <string>
#include "base/message_loop.h"
#include "base/string_util.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/extensions/extension_accessibility_api.h"
#include "chrome/browser/views/accessibility_event_router_views.h"
#include "chrome/browser/views/accessible_view_helper.h"
#include "chrome/common/notification_registrar.h"
#include "chrome/common/notification_service.h"
#include "chrome/test/testing_profile.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "views/controls/button/native_button.h"
#include "views/grid_layout.h"
#include "views/views_delegate.h"
#include "views/widget/root_view.h"
#include "views/window/window.h"
#if defined(OS_WIN)
#include "views/widget/widget_win.h"
#elif defined(OS_LINUX)
#include "views/widget/widget_gtk.h"
#endif
#if defined(TOOLKIT_VIEWS)
class AccessibilityViewsDelegate : public views::ViewsDelegate {
public:
AccessibilityViewsDelegate() {}
virtual ~AccessibilityViewsDelegate() {}
// Overridden from views::ViewsDelegate:
virtual Clipboard* GetClipboard() const { return NULL; }
virtual void SaveWindowPlacement(const std::wstring& window_name,
const gfx::Rect& bounds,
bool maximized) {
}
virtual bool GetSavedWindowBounds(const std::wstring& window_name,
gfx::Rect* bounds) const {
return false;
}
virtual bool GetSavedMaximizedState(const std::wstring& window_name,
bool* maximized) const {
return false;
}
virtual void NotifyAccessibilityEvent(
views::View* view, AccessibilityTypes::Event event_type) {
AccessibilityEventRouterViews::GetInstance()->HandleAccessibilityEvent(
view, event_type);
}
#if defined(OS_WIN)
virtual HICON GetDefaultWindowIcon() const {
return NULL;
}
#endif
virtual void AddRef() {}
virtual void ReleaseRef() {}
DISALLOW_COPY_AND_ASSIGN(AccessibilityViewsDelegate);
};
class AccessibilityEventRouterViewsTest
: public testing::Test,
public NotificationObserver {
public:
virtual void SetUp() {
views::ViewsDelegate::views_delegate = new AccessibilityViewsDelegate();
}
virtual void TearDown() {
delete views::ViewsDelegate::views_delegate;
views::ViewsDelegate::views_delegate = NULL;
}
views::Widget* CreateWidget() {
#if defined(OS_WIN)
return new views::WidgetWin();
#elif defined(OS_LINUX)
return new views::WidgetGtk(views::WidgetGtk::TYPE_WINDOW);
#endif
}
protected:
// Implement NotificationObserver::Observe and store information about a
// ACCESSIBILITY_CONTROL_FOCUSED event.
virtual void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
ASSERT_EQ(type.value, NotificationType::ACCESSIBILITY_CONTROL_FOCUSED);
const AccessibilityControlInfo* info =
Details<const AccessibilityControlInfo>(details).ptr();
focus_event_count_++;
last_control_name_ = info->name();
}
MessageLoopForUI message_loop_;
int focus_event_count_;
std::string last_control_name_;
};
TEST_F(AccessibilityEventRouterViewsTest, TestFocusNotification) {
const char kButton1ASCII[] = "Button1";
const char kButton2ASCII[] = "Button2";
const char kButton3ASCII[] = "Button3";
// Create a window and layout.
views::Widget* window = CreateWidget();
window->Init(NULL, gfx::Rect(0, 0, 100, 100));
views::RootView* root_view = window->GetRootView();
views::GridLayout* layout = new views::GridLayout(root_view);
root_view->SetLayoutManager(layout);
views::ColumnSet* column_set = layout->AddColumnSet(0);
column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::FILL, 1,
views::GridLayout::USE_PREF, 0, 0);
// Add 3 buttons.
views::NativeButton* button1 = new views::NativeButton(
NULL, ASCIIToWide(kButton1ASCII));
layout->StartRow(0, 0);
layout->AddView(button1);
views::NativeButton* button2 = new views::NativeButton(
NULL, ASCIIToWide(kButton2ASCII));
layout->StartRow(0, 0);
layout->AddView(button2);
views::NativeButton* button3 = new views::NativeButton(
NULL, ASCIIToWide(kButton3ASCII));
layout->StartRow(0, 0);
layout->AddView(button3);
// Set focus to the first button initially.
button1->RequestFocus();
// Start listening to ACCESSIBILITY_CONTROL_FOCUSED notifications.
NotificationRegistrar registrar;
registrar.Add(this,
NotificationType::ACCESSIBILITY_CONTROL_FOCUSED,
NotificationService::AllSources());
// Switch on accessibility event notifications.
TestingProfile profile;
ExtensionAccessibilityEventRouter* accessibility_event_router =
ExtensionAccessibilityEventRouter::GetInstance();
accessibility_event_router->SetAccessibilityEnabled(true);
// Create an AccessibleViewHelper for this window, which will send
// accessibility notifications for all events that happen in child views.
// Tell it to ignore button 3.
AccessibleViewHelper accessible_view_helper(root_view, &profile);
accessible_view_helper.IgnoreView(button3);
// Advance focus to the next button and test that we got the
// expected notification with the name of button 2.
views::FocusManager* focus_manager = window->GetFocusManager();
focus_event_count_ = 0;
focus_manager->AdvanceFocus(false);
EXPECT_EQ(1, focus_event_count_);
EXPECT_EQ(kButton2ASCII, last_control_name_);
// Advance to button 3. We expect no notification because we told it
// to ignore this view.
focus_manager->AdvanceFocus(false);
EXPECT_EQ(1, focus_event_count_);
// Advance to button 1 and check the notification.
focus_manager->AdvanceFocus(false);
EXPECT_EQ(2, focus_event_count_);
EXPECT_EQ(kButton1ASCII, last_control_name_);
}
#endif // defined(TOOLKIT_VIEWS)
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