/*

 * Copyright (C) 2008, 2009, 2010 Apple Inc. All Rights Reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

 */

#ifndef AccessibilityController_h

#define AccessibilityController_h

#include "AccessibilityUIElement.h"

#include <JavaScriptCore/JSObjectRef.h>

#include <string>

#include <wtf/HashMap.h>

#include <wtf/Platform.h>

#if PLATFORM(WIN)

#include <windows.h>

#endif

class AccessibilityController {

public:

    AccessibilityController();

    ~AccessibilityController();

    void makeWindowObject(JSContextRef context, JSObjectRef windowObject, JSValueRef* exception);

    // Controller Methods - platform-independent implementations

    AccessibilityUIElement rootElement();

    AccessibilityUIElement focusedElement();

    AccessibilityUIElement elementAtPoint(int x, int y);

    void setLogFocusEvents(bool);

    void setLogValueChangeEvents(bool);

    void setLogScrollingStartEvents(bool);

    void resetToConsistentState();

    void addNotificationListener(PlatformUIElement, JSObjectRef functionCallback);

    void notificationReceived(PlatformUIElement, const std::string& eventName);

private:

    static JSClassRef getJSClass();

#if PLATFORM(WIN)

    HWINEVENTHOOK m_focusEventHook;

    HWINEVENTHOOK m_valueChangeEventHook;

    HWINEVENTHOOK m_scrollingStartEventHook;

    HWINEVENTHOOK m_allEventsHook;

    HashMap<PlatformUIElement, JSObjectRef> m_notificationListeners;

#endif

};

#endif // AccessibilityController_h