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// 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.
#ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_
#define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_
#include <oleacc.h>
#include "base/win/scoped_comptr.h"
#include "content/browser/accessibility/browser_accessibility_manager.h"
namespace content {
class BrowserAccessibilityWin;
// Manages a tree of BrowserAccessibilityWin objects.
class CONTENT_EXPORT BrowserAccessibilityManagerWin
: public BrowserAccessibilityManager {
public:
BrowserAccessibilityManagerWin(
HWND parent_hwnd,
IAccessible* parent_iaccessible,
const AccessibilityNodeData& src,
BrowserAccessibilityDelegate* delegate,
BrowserAccessibilityFactory* factory = new BrowserAccessibilityFactory());
virtual ~BrowserAccessibilityManagerWin();
static AccessibilityNodeData GetEmptyDocument();
// Get the closest containing HWND.
HWND parent_hwnd();
// Get a the default IAccessible for the parent window, does not make a
// new reference.
IAccessible* parent_iaccessible();
// BrowserAccessibilityManager methods
virtual void NotifyAccessibilityEvent(int type, BrowserAccessibility* node);
// Track this object and post a VISIBLE_DATA_CHANGED notification when
// its container scrolls.
// TODO(dmazzoni): remove once http://crbug.com/113483 is fixed.
void TrackScrollingObject(BrowserAccessibilityWin* node);
private:
// The closest ancestor HWND.
HWND parent_hwnd_;
// The accessibility instance for the parent window.
IAccessible* parent_iaccessible_;
// Give BrowserAccessibilityManager::Create access to our constructor.
friend class BrowserAccessibilityManager;
// Track the most recent object that has been asked to scroll and
// post a notification directly on it when it reaches its destination.
// TODO(dmazzoni): remove once http://crbug.com/113483 is fixed.
BrowserAccessibilityWin* tracked_scroll_object_;
DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManagerWin);
};
} // namespace content
#endif // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_
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