1/*
2 * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.
3 * Copyright (C) 2008, 2009 Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "config.h"
28#include "PlatformKeyboardEvent.h"
29
30#if OS(WINDOWS)
31#include <windows.h>
32#elif OS(DARWIN)
33#import <Carbon/Carbon.h>
34#else
35#include "NotImplemented.h"
36#endif
37
38namespace WebCore {
39
40#if OS(WINDOWS)
41static const unsigned short HIGH_BIT_MASK_SHORT = 0x8000;
42#endif
43
44void PlatformKeyboardEvent::disambiguateKeyDownEvent(Type type, bool backwardCompatibilityMode)
45{
46#if OS(WINDOWS)
47    // No KeyDown events on Windows to disambiguate.
48    ASSERT_NOT_REACHED();
49#else
50    // Can only change type from KeyDown to RawKeyDown or Char, as we lack information for other conversions.
51    ASSERT(m_type == KeyDown);
52    ASSERT(type == RawKeyDown || type == Char);
53    m_type = type;
54    if (backwardCompatibilityMode)
55        return;
56
57    if (type == RawKeyDown) {
58        m_text = String();
59        m_unmodifiedText = String();
60    } else {
61        m_keyIdentifier = String();
62        m_windowsVirtualKeyCode = 0;
63#if OS(DARWIN)
64        if (m_text.length() == 1 && (m_text[0U] >= 0xF700 && m_text[0U] <= 0xF7FF)) {
65            // According to NSEvents.h, OpenStep reserves the range 0xF700-0xF8FF for function keys. However, some actual private use characters
66            // happen to be in this range, e.g. the Apple logo (Option+Shift+K).
67            // 0xF7FF is an arbitrary cut-off.
68            m_text = String();
69            m_unmodifiedText = String();
70        }
71#endif
72    }
73#endif
74}
75
76bool PlatformKeyboardEvent::currentCapsLockState()
77{
78#if OS(WINDOWS)
79    // FIXME: Does this even work inside the sandbox?
80    return GetKeyState(VK_CAPITAL) & 1;
81#elif OS(DARWIN)
82    return GetCurrentKeyModifiers() & alphaLock;
83#else
84    notImplemented();
85    return false;
86#endif
87}
88
89void PlatformKeyboardEvent::getCurrentModifierState(bool& shiftKey, bool& ctrlKey, bool& altKey, bool& metaKey)
90{
91#if OS(WINDOWS)
92    shiftKey = GetKeyState(VK_SHIFT) & HIGH_BIT_MASK_SHORT;
93    ctrlKey = GetKeyState(VK_CONTROL) & HIGH_BIT_MASK_SHORT;
94    altKey = GetKeyState(VK_MENU) & HIGH_BIT_MASK_SHORT;
95    metaKey = false;
96#elif OS(DARWIN)
97    UInt32 currentModifiers = GetCurrentKeyModifiers();
98    shiftKey = currentModifiers & ::shiftKey;
99    ctrlKey = currentModifiers & ::controlKey;
100    altKey = currentModifiers & ::optionKey;
101    metaKey = currentModifiers & ::cmdKey;
102#else
103    notImplemented();
104#endif
105}
106
107} // namespace WebCore
108