/*

 * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.

 * Copyright (C) 2008, 2009 Google Inc.

 *

 * 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 COMPUTER, 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 COMPUTER, 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. 

 */

#include "config.h"

#include "PlatformKeyboardEvent.h"

#if OS(WINDOWS)

#include <windows.h>

#elif OS(DARWIN)

#import <Carbon/Carbon.h>

#else

#include "NotImplemented.h"

#endif

namespace WebCore {

#if OS(WINDOWS)

static const unsigned short HIGH_BIT_MASK_SHORT = 0x8000;

#endif

void PlatformKeyboardEvent::disambiguateKeyDownEvent(Type type, bool backwardCompatibilityMode)

{

#if OS(WINDOWS)

    // No KeyDown events on Windows to disambiguate.

    ASSERT_NOT_REACHED();

#else

    // Can only change type from KeyDown to RawKeyDown or Char, as we lack information for other conversions.

    ASSERT(m_type == KeyDown);

    ASSERT(type == RawKeyDown || type == Char);

    m_type = type;

    if (backwardCompatibilityMode)

        return;

    if (type == RawKeyDown) {

        m_text = String();

        m_unmodifiedText = String();

    } else {

        m_keyIdentifier = String();

        m_windowsVirtualKeyCode = 0;

#if OS(DARWIN)

        if (m_text.length() == 1 && (m_text[0U] >= 0xF700 && m_text[0U] <= 0xF7FF)) {

            // According to NSEvents.h, OpenStep reserves the range 0xF700-0xF8FF for function keys. However, some actual private use characters

            // happen to be in this range, e.g. the Apple logo (Option+Shift+K).

            // 0xF7FF is an arbitrary cut-off.

            m_text = String();

            m_unmodifiedText = String();

        }

#endif

    }

#endif

}

bool PlatformKeyboardEvent::currentCapsLockState()

{

#if OS(WINDOWS)

    // FIXME: Does this even work inside the sandbox?

    return GetKeyState(VK_CAPITAL) & 1;

#elif OS(DARWIN)

    return GetCurrentKeyModifiers() & alphaLock;

#else

    notImplemented();

    return false;

#endif

}

void PlatformKeyboardEvent::getCurrentModifierState(bool& shiftKey, bool& ctrlKey, bool& altKey, bool& metaKey)

{

#if OS(WINDOWS)

    shiftKey = GetKeyState(VK_SHIFT) & HIGH_BIT_MASK_SHORT;

    ctrlKey = GetKeyState(VK_CONTROL) & HIGH_BIT_MASK_SHORT;

    altKey = GetKeyState(VK_MENU) & HIGH_BIT_MASK_SHORT;

    metaKey = false;

#elif OS(DARWIN)

    UInt32 currentModifiers = GetCurrentKeyModifiers();

    shiftKey = currentModifiers & ::shiftKey;

    ctrlKey = currentModifiers & ::controlKey;

    altKey = currentModifiers & ::optionKey;

    metaKey = currentModifiers & ::cmdKey;

#else

    notImplemented();

#endif

}

} // namespace WebCore