WebCore/platform/PlatformKeyboardEvent.h

   1 /*
   2  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.  All rights reserved.
   3  * Copyright (C) 2008 Collabora, Ltd.  All rights reserved.
   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 #ifndef PlatformKeyboardEvent_h
  28 #define PlatformKeyboardEvent_h
  29
  30 #include "PlatformString.h"
  31 #include <wtf/Platform.h>
  32
  33 #if PLATFORM(MAC)
  34 #include <wtf/RetainPtr.h>
  35 #ifdef __OBJC__
  36 @class NSEvent;
  37 #else
  38 class NSEvent;
  39 #endif
  40 #endif
  41
  42 #if PLATFORM(WIN)
  43 typedef struct HWND__ *HWND;
  44 typedef unsigned WPARAM;
  45 typedef long LPARAM;
  46 #endif
  47
  48 #if PLATFORM(GTK)
  49 typedef struct _GdkEventKey GdkEventKey;
  50 #endif
  51
  52 #if PLATFORM(QT)
  53 QT_BEGIN_NAMESPACE
  54 class QKeyEvent;
  55 QT_END_NAMESPACE
  56 #endif
  57
  58 #if PLATFORM(WX)
  59 class wxKeyEvent;
  60 #endif
  61
  62 #if PLATFORM(HAIKU)
  63 class BMessage;
  64 #endif
  65
  66 namespace WebCore {
  67
  68     class PlatformKeyboardEvent : public FastAllocBase {
  69     public:
  70         enum Type {
  71             // KeyDown is sent by platforms such as Mac OS X, gtk and Qt, and has information about both physical pressed key, and its translation.
  72             // For DOM processing, it needs to be disambiguated as RawKeyDown or Char event.
  73             KeyDown,
  74
  75             // KeyUp is sent by all platforms.
  76             KeyUp,
  77
  78             // These events are sent by platforms such as Windows and wxWidgets. RawKeyDown only has information about a physical key, and Char
  79             // only has information about a character it was translated into.
  80             RawKeyDown,
  81             Char
  82         };
  83
  84         enum ModifierKey {
  85             AltKey = 1 << 0,
  86             CtrlKey = 1 << 1,
  87             MetaKey = 1 << 2,
  88             ShiftKey = 1 << 3,
  89         };
  90
  91         Type type() const { return m_type; }
  92         void disambiguateKeyDownEvent(Type, bool backwardCompatibilityMode = false); // Only used on platforms that need it, i.e. those that generate KeyDown events.
  93
  94         // Text as as generated by processing a virtual key code with a keyboard layout
  95         // (in most cases, just a character code, but the layout can emit several
  96         // characters in a single keypress event on some platforms).
  97         // This may bear no resemblance to the ultimately inserted text if an input method
  98         // processes the input.
  99         // Will be null for KeyUp and RawKeyDown events.
 100         String text() const { return m_text; }
 101
 102         // Text that would have been generated by the keyboard if no modifiers were pressed
 103         // (except for Shift); useful for shortcut (accelerator) key handling.
 104         // Otherwise, same as text().
 105         String unmodifiedText() const { return m_unmodifiedText; }
 106
 107         // Most compatible Windows virtual key code associated with the event.
 108         // Zero for Char events.
 109         int windowsVirtualKeyCode() const { return m_windowsVirtualKeyCode; }
 110         void setWindowsVirtualKeyCode(int code) { m_windowsVirtualKeyCode = code; }
 111
 112         int nativeVirtualKeyCode() const { return m_nativeVirtualKeyCode; }
 113         void setNativeVirtualKeyCode(int code) { m_nativeVirtualKeyCode = code; }
 114
 115         String keyIdentifier() const { return m_keyIdentifier; }
 116         bool isAutoRepeat() const { return m_autoRepeat; }
 117         void setIsAutoRepeat(bool in) { m_autoRepeat = in; }
 118         bool isKeypad() const { return m_isKeypad; }
 119         bool shiftKey() const { return m_shiftKey; }
 120         bool ctrlKey() const { return m_ctrlKey; }
 121         bool altKey() const { return m_altKey; }
 122         bool metaKey() const { return m_metaKey; }
 123         unsigned modifiers() const {
 124             return (altKey() ? AltKey : 0)
 125                 | (ctrlKey() ? CtrlKey : 0)
 126                 | (metaKey() ? MetaKey : 0)
 127                 | (shiftKey() ? ShiftKey : 0);
 128         }
 129
 130         static bool currentCapsLockState();
 131
 132 #if PLATFORM(MAC)
 133         PlatformKeyboardEvent();
 134         PlatformKeyboardEvent(NSEvent*);
 135         NSEvent* macEvent() const { return m_macEvent.get(); }
 136 #endif
 137
 138 #if PLATFORM(WIN)
 139         PlatformKeyboardEvent(HWND, WPARAM, LPARAM, Type, bool);
 140 #endif
 141
 142 #if PLATFORM(GTK)
 143         PlatformKeyboardEvent(GdkEventKey*);
 144         GdkEventKey* gdkEventKey() const;
 145 #endif
 146
 147 #if PLATFORM(QT)
 148         PlatformKeyboardEvent(QKeyEvent*);
 149         QKeyEvent* qtEvent() const { return m_qtEvent; }
 150 #endif
 151
 152 #if PLATFORM(WX)
 153         PlatformKeyboardEvent(wxKeyEvent&);
 154 #endif
 155
 156 #if PLATFORM(HAIKU)
 157         PlatformKeyboardEvent(BMessage*);
 158 #endif
 159
 160 #if PLATFORM(WIN) || PLATFORM(CHROMIUM)
 161         bool isSystemKey() const { return m_isSystemKey; }
 162 #endif
 163
 164     protected:
 165         Type m_type;
 166         String m_text;
 167         String m_unmodifiedText;
 168         String m_keyIdentifier;
 169         bool m_autoRepeat;
 170         int m_windowsVirtualKeyCode;
 171         int m_nativeVirtualKeyCode;
 172         bool m_isKeypad;
 173         bool m_shiftKey;
 174         bool m_ctrlKey;
 175         bool m_altKey;
 176         bool m_metaKey;
 177
 178 #if PLATFORM(MAC)
 179         RetainPtr<NSEvent> m_macEvent;
 180 #endif
 181 #if PLATFORM(WIN) || PLATFORM(CHROMIUM)
 182         bool m_isSystemKey;
 183 #endif
 184 #if PLATFORM(GTK)
 185         GdkEventKey* m_gdkEventKey;
 186 #endif
 187 #if PLATFORM(QT)
 188         QKeyEvent* m_qtEvent;
 189 #endif
 190     };
 191
 192 } // namespace WebCore
 193
 194 #endif // PlatformKeyboardEvent_h