ui/views/accessibility/native_view_accessibility_win.cc

// Copyright (c) 2012 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 "ui/views/accessibility/native_view_accessibility_win.h"

#include <oleacc.h>

#include <memory>
#include <set>
#include <vector>

#include "base/memory/ptr_util.h"
#include "base/memory/singleton.h"
#include "base/strings/utf_string_conversions.h"
#include "base/win/scoped_comptr.h"
#include "base/win/windows_version.h"
#include "third_party/iaccessible2/ia2_api_all.h"
#include "ui/accessibility/ax_enums.h"
#include "ui/accessibility/ax_node_data.h"
#include "ui/accessibility/ax_text_utils.h"
#include "ui/base/layout.h"
#include "ui/base/win/accessibility_misc_utils.h"
#include "ui/base/win/atl_module.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/focus/focus_manager.h"
#include "ui/views/widget/widget.h"
#include "ui/views/win/hwnd_util.h"

namespace views {

// static
std::unique_ptr<NativeViewAccessibility> NativeViewAccessibility::Create(
    View* view) {
  return base::MakeUnique<NativeViewAccessibilityWin>(view);
}

NativeViewAccessibilityWin::NativeViewAccessibilityWin(View* view)
    : NativeViewAccessibilityBase(view) {}

NativeViewAccessibilityWin::~NativeViewAccessibilityWin() {}

gfx::NativeViewAccessible NativeViewAccessibilityWin::GetParent() {
  IAccessible* parent = NativeViewAccessibilityBase::GetParent();
  if (parent)
    return parent;

  HWND hwnd = HWNDForView(view_);
  if (!hwnd)
    return NULL;

  HRESULT hr = ::AccessibleObjectFromWindow(
      hwnd, OBJID_WINDOW, IID_IAccessible,
      reinterpret_cast<void**>(&parent));
  if (SUCCEEDED(hr))
    return parent;

  return NULL;
}

gfx::AcceleratedWidget
NativeViewAccessibilityWin::GetTargetForNativeAccessibilityEvent() {
  return HWNDForView(view_);
}

gfx::RectF NativeViewAccessibilityWin::GetBoundsInScreen() const {
  gfx::RectF bounds = gfx::RectF(view_->GetBoundsInScreen());
  gfx::NativeView native_view = view_->GetWidget()->GetNativeView();
  float device_scale = ui::GetScaleFactorForNativeView(native_view);
  bounds.Scale(device_scale);
  return bounds;
}

}  // namespace views