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gecko/widget/windows/KeyboardLayout.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "prlog.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/TextEvents.h"
#include "mozilla/WindowsVersion.h"
#include "KeyboardLayout.h"
#include "nsIMM32Handler.h"
#include "nsMemory.h"
#include "nsToolkit.h"
#include "nsQuickSort.h"
#include "nsAlgorithm.h"
#include "nsUnicharUtils.h"
#include "WidgetUtils.h"
#include "WinUtils.h"
#include "nsWindowDbg.h"
#include "nsServiceManagerUtils.h"
#include "nsPrintfCString.h"
#include "nsIDOMKeyEvent.h"
#include "nsIIdleServiceInternal.h"
#ifdef MOZ_CRASHREPORTER
#include "nsExceptionHandler.h"
#endif
#include "npapi.h"
#include <windows.h>
#include <winuser.h>
#include <algorithm>
#ifndef WINABLEAPI
#include <winable.h>
#endif
// In WinUser.h, MAPVK_VK_TO_VSC_EX is defined only when WINVER >= 0x0600
#ifndef MAPVK_VK_TO_VSC_EX
#define MAPVK_VK_TO_VSC_EX (4)
#endif
namespace mozilla {
namespace widget {
#ifdef PR_LOGGING
static const char* kVirtualKeyName[] = {
"NULL", "VK_LBUTTON", "VK_RBUTTON", "VK_CANCEL",
"VK_MBUTTON", "VK_XBUTTON1", "VK_XBUTTON2", "0x07",
"VK_BACK", "VK_TAB", "0x0A", "0x0B",
"VK_CLEAR", "VK_RETURN", "0x0E", "0x0F",
"VK_SHIFT", "VK_CONTROL", "VK_MENU", "VK_PAUSE",
"VK_CAPITAL", "VK_KANA, VK_HANGUL", "0x16", "VK_JUNJA",
"VK_FINAL", "VK_HANJA, VK_KANJI", "0x1A", "VK_ESCAPE",
"VK_CONVERT", "VK_NONCONVERT", "VK_ACCEPT", "VK_MODECHANGE",
"VK_SPACE", "VK_PRIOR", "VK_NEXT", "VK_END",
"VK_HOME", "VK_LEFT", "VK_UP", "VK_RIGHT",
"VK_DOWN", "VK_SELECT", "VK_PRINT", "VK_EXECUTE",
"VK_SNAPSHOT", "VK_INSERT", "VK_DELETE", "VK_HELP",
"VK_0", "VK_1", "VK_2", "VK_3",
"VK_4", "VK_5", "VK_6", "VK_7",
"VK_8", "VK_9", "0x3A", "0x3B",
"0x3C", "0x3D", "0x3E", "0x3F",
"0x40", "VK_A", "VK_B", "VK_C",
"VK_D", "VK_E", "VK_F", "VK_G",
"VK_H", "VK_I", "VK_J", "VK_K",
"VK_L", "VK_M", "VK_N", "VK_O",
"VK_P", "VK_Q", "VK_R", "VK_S",
"VK_T", "VK_U", "VK_V", "VK_W",
"VK_X", "VK_Y", "VK_Z", "VK_LWIN",
"VK_RWIN", "VK_APPS", "0x5E", "VK_SLEEP",
"VK_NUMPAD0", "VK_NUMPAD1", "VK_NUMPAD2", "VK_NUMPAD3",
"VK_NUMPAD4", "VK_NUMPAD5", "VK_NUMPAD6", "VK_NUMPAD7",
"VK_NUMPAD8", "VK_NUMPAD9", "VK_MULTIPLY", "VK_ADD",
"VK_SEPARATOR", "VK_SUBTRACT", "VK_DECIMAL", "VK_DIVIDE",
"VK_F1", "VK_F2", "VK_F3", "VK_F4",
"VK_F5", "VK_F6", "VK_F7", "VK_F8",
"VK_F9", "VK_F10", "VK_F11", "VK_F12",
"VK_F13", "VK_F14", "VK_F15", "VK_F16",
"VK_F17", "VK_F18", "VK_F19", "VK_F20",
"VK_F21", "VK_F22", "VK_F23", "VK_F24",
"0x88", "0x89", "0x8A", "0x8B",
"0x8C", "0x8D", "0x8E", "0x8F",
"VK_NUMLOCK", "VK_SCROLL", "VK_OEM_NEC_EQUAL, VK_OEM_FJ_JISHO",
"VK_OEM_FJ_MASSHOU",
"VK_OEM_FJ_TOUROKU", "VK_OEM_FJ_LOYA", "VK_OEM_FJ_ROYA", "0x97",
"0x98", "0x99", "0x9A", "0x9B",
"0x9C", "0x9D", "0x9E", "0x9F",
"VK_LSHIFT", "VK_RSHIFT", "VK_LCONTROL", "VK_RCONTROL",
"VK_LMENU", "VK_RMENU", "VK_BROWSER_BACK", "VK_BROWSER_FORWARD",
"VK_BROWSER_REFRESH", "VK_BROWSER_STOP", "VK_BROWSER_SEARCH",
"VK_BROWSER_FAVORITES",
"VK_BROWSER_HOME", "VK_VOLUME_MUTE", "VK_VOLUME_DOWN", "VK_VOLUME_UP",
"VK_MEDIA_NEXT_TRACK", "VK_MEDIA_PREV_TRACK", "VK_MEDIA_STOP",
"VK_MEDIA_PLAY_PAUSE",
"VK_LAUNCH_MAIL", "VK_LAUNCH_MEDIA_SELECT", "VK_LAUNCH_APP1",
"VK_LAUNCH_APP2",
"0xB8", "0xB9", "VK_OEM_1", "VK_OEM_PLUS",
"VK_OEM_COMMA", "VK_OEM_MINUS", "VK_OEM_PERIOD", "VK_OEM_2",
"VK_OEM_3", "VK_ABNT_C1", "VK_ABNT_C2", "0xC3",
"0xC4", "0xC5", "0xC6", "0xC7",
"0xC8", "0xC9", "0xCA", "0xCB",
"0xCC", "0xCD", "0xCE", "0xCF",
"0xD0", "0xD1", "0xD2", "0xD3",
"0xD4", "0xD5", "0xD6", "0xD7",
"0xD8", "0xD9", "0xDA", "VK_OEM_4",
"VK_OEM_5", "VK_OEM_6", "VK_OEM_7", "VK_OEM_8",
"0xE0", "VK_OEM_AX", "VK_OEM_102", "VK_ICO_HELP",
"VK_ICO_00", "VK_PROCESSKEY", "VK_ICO_CLEAR", "VK_PACKET",
"0xE8", "VK_OEM_RESET", "VK_OEM_JUMP", "VK_OEM_PA1",
"VK_OEM_PA2", "VK_OEM_PA3", "VK_OEM_WSCTRL", "VK_OEM_CUSEL",
"VK_OEM_ATTN", "VK_OEM_FINISH", "VK_OEM_COPY", "VK_OEM_AUTO",
"VK_OEM_ENLW", "VK_OEM_BACKTAB", "VK_ATTN", "VK_CRSEL",
"VK_EXSEL", "VK_EREOF", "VK_PLAY", "VK_ZOOM",
"VK_NONAME", "VK_PA1", "VK_OEM_CLEAR", "0xFF"
};
static_assert(sizeof(kVirtualKeyName) / sizeof(const char*) == 0x100,
"The virtual key name must be defined just 256 keys");
#endif // #ifdef PR_LOGGING
// Unique id counter associated with a keydown / keypress events. Used in
// identifing keypress events for removal from async event dispatch queue
// in metrofx after preventDefault is called on keydown events.
static uint32_t sUniqueKeyEventId = 0;
struct DeadKeyEntry
{
char16_t BaseChar;
char16_t CompositeChar;
};
class DeadKeyTable
{
friend class KeyboardLayout;
uint16_t mEntries;
// KeyboardLayout::AddDeadKeyTable() will allocate as many entries as
// required. It is the only way to create new DeadKeyTable instances.
DeadKeyEntry mTable[1];
void Init(const DeadKeyEntry* aDeadKeyArray, uint32_t aEntries)
{
mEntries = aEntries;
memcpy(mTable, aDeadKeyArray, aEntries * sizeof(DeadKeyEntry));
}
static uint32_t SizeInBytes(uint32_t aEntries)
{
return offsetof(DeadKeyTable, mTable) + aEntries * sizeof(DeadKeyEntry);
}
public:
uint32_t Entries() const
{
return mEntries;
}
bool IsEqual(const DeadKeyEntry* aDeadKeyArray, uint32_t aEntries) const
{
return (mEntries == aEntries &&
!memcmp(mTable, aDeadKeyArray,
aEntries * sizeof(DeadKeyEntry)));
}
char16_t GetCompositeChar(char16_t aBaseChar) const;
};
/*****************************************************************************
* mozilla::widget::ModifierKeyState
*****************************************************************************/
ModifierKeyState::ModifierKeyState()
{
Update();
}
ModifierKeyState::ModifierKeyState(bool aIsShiftDown,
bool aIsControlDown,
bool aIsAltDown)
{
Update();
Unset(MODIFIER_SHIFT | MODIFIER_CONTROL | MODIFIER_ALT | MODIFIER_ALTGRAPH);
Modifiers modifiers = 0;
if (aIsShiftDown) {
modifiers |= MODIFIER_SHIFT;
}
if (aIsControlDown) {
modifiers |= MODIFIER_CONTROL;
}
if (aIsAltDown) {
modifiers |= MODIFIER_ALT;
}
if (modifiers) {
Set(modifiers);
}
}
ModifierKeyState::ModifierKeyState(Modifiers aModifiers) :
mModifiers(aModifiers)
{
EnsureAltGr();
}
void
ModifierKeyState::Update()
{
mModifiers = 0;
if (IS_VK_DOWN(VK_SHIFT)) {
mModifiers |= MODIFIER_SHIFT;
}
if (IS_VK_DOWN(VK_CONTROL)) {
mModifiers |= MODIFIER_CONTROL;
}
if (IS_VK_DOWN(VK_MENU)) {
mModifiers |= MODIFIER_ALT;
}
if (IS_VK_DOWN(VK_LWIN) || IS_VK_DOWN(VK_RWIN)) {
mModifiers |= MODIFIER_OS;
}
if (::GetKeyState(VK_CAPITAL) & 1) {
mModifiers |= MODIFIER_CAPSLOCK;
}
if (::GetKeyState(VK_NUMLOCK) & 1) {
mModifiers |= MODIFIER_NUMLOCK;
}
if (::GetKeyState(VK_SCROLL) & 1) {
mModifiers |= MODIFIER_SCROLLLOCK;
}
EnsureAltGr();
}
void
ModifierKeyState::Unset(Modifiers aRemovingModifiers)
{
mModifiers &= ~aRemovingModifiers;
// Note that we don't need to unset AltGr flag here automatically.
// For nsEditor, we need to remove Alt and Control flags but AltGr isn't
// checked in nsEditor, so, it can be kept.
}
void
ModifierKeyState::Set(Modifiers aAddingModifiers)
{
mModifiers |= aAddingModifiers;
EnsureAltGr();
}
void
ModifierKeyState::InitInputEvent(WidgetInputEvent& aInputEvent) const
{
aInputEvent.modifiers = mModifiers;
switch(aInputEvent.mClass) {
case eMouseEventClass:
case eMouseScrollEventClass:
case eWheelEventClass:
case eDragEventClass:
case eSimpleGestureEventClass:
InitMouseEvent(aInputEvent);
break;
default:
break;
}
}
void
ModifierKeyState::InitMouseEvent(WidgetInputEvent& aMouseEvent) const
{
NS_ASSERTION(aMouseEvent.mClass == eMouseEventClass ||
aMouseEvent.mClass == eWheelEventClass ||
aMouseEvent.mClass == eDragEventClass ||
aMouseEvent.mClass == eSimpleGestureEventClass,
"called with non-mouse event");
if (XRE_GetWindowsEnvironment() == WindowsEnvironmentType_Metro) {
// Buttons for immersive mode are handled in MetroInput.
return;
}
WidgetMouseEventBase& mouseEvent = *aMouseEvent.AsMouseEventBase();
mouseEvent.buttons = 0;
if (::GetKeyState(VK_LBUTTON) < 0) {
mouseEvent.buttons |= WidgetMouseEvent::eLeftButtonFlag;
}
if (::GetKeyState(VK_RBUTTON) < 0) {
mouseEvent.buttons |= WidgetMouseEvent::eRightButtonFlag;
}
if (::GetKeyState(VK_MBUTTON) < 0) {
mouseEvent.buttons |= WidgetMouseEvent::eMiddleButtonFlag;
}
if (::GetKeyState(VK_XBUTTON1) < 0) {
mouseEvent.buttons |= WidgetMouseEvent::e4thButtonFlag;
}
if (::GetKeyState(VK_XBUTTON2) < 0) {
mouseEvent.buttons |= WidgetMouseEvent::e5thButtonFlag;
}
}
bool
ModifierKeyState::IsShift() const
{
return (mModifiers & MODIFIER_SHIFT) != 0;
}
bool
ModifierKeyState::IsControl() const
{
return (mModifiers & MODIFIER_CONTROL) != 0;
}
bool
ModifierKeyState::IsAlt() const
{
return (mModifiers & MODIFIER_ALT) != 0;
}
bool
ModifierKeyState::IsAltGr() const
{
return IsControl() && IsAlt();
}
bool
ModifierKeyState::IsWin() const
{
return (mModifiers & MODIFIER_OS) != 0;
}
bool
ModifierKeyState::IsCapsLocked() const
{
return (mModifiers & MODIFIER_CAPSLOCK) != 0;
}
bool
ModifierKeyState::IsNumLocked() const
{
return (mModifiers & MODIFIER_NUMLOCK) != 0;
}
bool
ModifierKeyState::IsScrollLocked() const
{
return (mModifiers & MODIFIER_SCROLLLOCK) != 0;
}
Modifiers
ModifierKeyState::GetModifiers() const
{
return mModifiers;
}
void
ModifierKeyState::EnsureAltGr()
{
// If both Control key and Alt key are pressed, it means AltGr is pressed.
// Ideally, we should check whether the current keyboard layout has AltGr
// or not. However, setting AltGr flags for keyboard which doesn't have
// AltGr must not be serious bug. So, it should be OK for now.
if (IsAltGr()) {
mModifiers |= MODIFIER_ALTGRAPH;
}
}
/*****************************************************************************
* mozilla::widget::UniCharsAndModifiers
*****************************************************************************/
void
UniCharsAndModifiers::Append(char16_t aUniChar, Modifiers aModifiers)
{
MOZ_ASSERT(mLength < 5);
mChars[mLength] = aUniChar;
mModifiers[mLength] = aModifiers;
mLength++;
}
void
UniCharsAndModifiers::FillModifiers(Modifiers aModifiers)
{
for (uint32_t i = 0; i < mLength; i++) {
mModifiers[i] = aModifiers;
}
}
bool
UniCharsAndModifiers::UniCharsEqual(const UniCharsAndModifiers& aOther) const
{
if (mLength != aOther.mLength) {
return false;
}
return !memcmp(mChars, aOther.mChars, mLength * sizeof(char16_t));
}
bool
UniCharsAndModifiers::UniCharsCaseInsensitiveEqual(
const UniCharsAndModifiers& aOther) const
{
if (mLength != aOther.mLength) {
return false;
}
nsCaseInsensitiveStringComparator comp;
return !comp(mChars, aOther.mChars, mLength, aOther.mLength);
}
UniCharsAndModifiers&
UniCharsAndModifiers::operator+=(const UniCharsAndModifiers& aOther)
{
uint32_t copyCount = std::min(aOther.mLength, 5 - mLength);
NS_ENSURE_TRUE(copyCount > 0, *this);
memcpy(&mChars[mLength], aOther.mChars, copyCount * sizeof(char16_t));
memcpy(&mModifiers[mLength], aOther.mModifiers,
copyCount * sizeof(Modifiers));
mLength += copyCount;
return *this;
}
UniCharsAndModifiers
UniCharsAndModifiers::operator+(const UniCharsAndModifiers& aOther) const
{
UniCharsAndModifiers result(*this);
result += aOther;
return result;
}
/*****************************************************************************
* mozilla::widget::VirtualKey
*****************************************************************************/
// static
VirtualKey::ShiftState
VirtualKey::ModifiersToShiftState(Modifiers aModifiers)
{
ShiftState state = 0;
if (aModifiers & MODIFIER_SHIFT) {
state |= STATE_SHIFT;
}
if (aModifiers & MODIFIER_CONTROL) {
state |= STATE_CONTROL;
}
if (aModifiers & MODIFIER_ALT) {
state |= STATE_ALT;
}
if (aModifiers & MODIFIER_CAPSLOCK) {
state |= STATE_CAPSLOCK;
}
return state;
}
// static
Modifiers
VirtualKey::ShiftStateToModifiers(ShiftState aShiftState)
{
Modifiers modifiers = 0;
if (aShiftState & STATE_SHIFT) {
modifiers |= MODIFIER_SHIFT;
}
if (aShiftState & STATE_CONTROL) {
modifiers |= MODIFIER_CONTROL;
}
if (aShiftState & STATE_ALT) {
modifiers |= MODIFIER_ALT;
}
if (aShiftState & STATE_CAPSLOCK) {
modifiers |= MODIFIER_CAPSLOCK;
}
if ((modifiers & (MODIFIER_ALT | MODIFIER_CONTROL)) ==
(MODIFIER_ALT | MODIFIER_CONTROL)) {
modifiers |= MODIFIER_ALTGRAPH;
}
return modifiers;
}
inline char16_t
VirtualKey::GetCompositeChar(ShiftState aShiftState, char16_t aBaseChar) const
{
return mShiftStates[aShiftState].DeadKey.Table->GetCompositeChar(aBaseChar);
}
const DeadKeyTable*
VirtualKey::MatchingDeadKeyTable(const DeadKeyEntry* aDeadKeyArray,
uint32_t aEntries) const
{
if (!mIsDeadKey) {
return nullptr;
}
for (ShiftState shiftState = 0; shiftState < 16; shiftState++) {
if (!IsDeadKey(shiftState)) {
continue;
}
const DeadKeyTable* dkt = mShiftStates[shiftState].DeadKey.Table;
if (dkt && dkt->IsEqual(aDeadKeyArray, aEntries)) {
return dkt;
}
}
return nullptr;
}
void
VirtualKey::SetNormalChars(ShiftState aShiftState,
const char16_t* aChars,
uint32_t aNumOfChars)
{
NS_ASSERTION(aShiftState < ArrayLength(mShiftStates), "invalid index");
SetDeadKey(aShiftState, false);
for (uint32_t index = 0; index < aNumOfChars; index++) {
// Ignore legacy non-printable control characters
mShiftStates[aShiftState].Normal.Chars[index] =
(aChars[index] >= 0x20) ? aChars[index] : 0;
}
uint32_t len = ArrayLength(mShiftStates[aShiftState].Normal.Chars);
for (uint32_t index = aNumOfChars; index < len; index++) {
mShiftStates[aShiftState].Normal.Chars[index] = 0;
}
}
void
VirtualKey::SetDeadChar(ShiftState aShiftState, char16_t aDeadChar)
{
NS_ASSERTION(aShiftState < ArrayLength(mShiftStates), "invalid index");
SetDeadKey(aShiftState, true);
mShiftStates[aShiftState].DeadKey.DeadChar = aDeadChar;
mShiftStates[aShiftState].DeadKey.Table = nullptr;
}
UniCharsAndModifiers
VirtualKey::GetUniChars(ShiftState aShiftState) const
{
UniCharsAndModifiers result = GetNativeUniChars(aShiftState);
const ShiftState STATE_ALT_CONTROL = (STATE_ALT | STATE_CONTROL);
if (!(aShiftState & STATE_ALT_CONTROL)) {
return result;
}
if (!result.mLength) {
result = GetNativeUniChars(aShiftState & ~STATE_ALT_CONTROL);
result.FillModifiers(ShiftStateToModifiers(aShiftState));
return result;
}
if ((aShiftState & STATE_ALT_CONTROL) == STATE_ALT_CONTROL) {
// Even if the shifted chars and the unshifted chars are same, we
// should consume the Alt key state and the Ctrl key state when
// AltGr key is pressed. Because if we don't consume them, the input
// events are ignored on nsEditor. (I.e., Users cannot input the
// characters with this key combination.)
Modifiers finalModifiers = ShiftStateToModifiers(aShiftState);
finalModifiers &= ~(MODIFIER_ALT | MODIFIER_CONTROL);
result.FillModifiers(finalModifiers);
return result;
}
UniCharsAndModifiers unmodifiedReslt =
GetNativeUniChars(aShiftState & ~STATE_ALT_CONTROL);
if (!result.UniCharsEqual(unmodifiedReslt)) {
// Otherwise, we should consume the Alt key state and the Ctrl key state
// only when the shifted chars and unshifted chars are different.
Modifiers finalModifiers = ShiftStateToModifiers(aShiftState);
finalModifiers &= ~(MODIFIER_ALT | MODIFIER_CONTROL);
result.FillModifiers(finalModifiers);
}
return result;
}
UniCharsAndModifiers
VirtualKey::GetNativeUniChars(ShiftState aShiftState) const
{
#ifdef DEBUG
if (aShiftState >= ArrayLength(mShiftStates)) {
nsPrintfCString warning("Shift state is out of range: "
"aShiftState=%d, ArrayLength(mShiftState)=%d",
aShiftState, ArrayLength(mShiftStates));
NS_WARNING(warning.get());
}
#endif
UniCharsAndModifiers result;
Modifiers modifiers = ShiftStateToModifiers(aShiftState);
if (IsDeadKey(aShiftState)) {
result.Append(mShiftStates[aShiftState].DeadKey.DeadChar, modifiers);
return result;
}
uint32_t index;
uint32_t len = ArrayLength(mShiftStates[aShiftState].Normal.Chars);
for (index = 0;
index < len && mShiftStates[aShiftState].Normal.Chars[index]; index++) {
result.Append(mShiftStates[aShiftState].Normal.Chars[index], modifiers);
}
return result;
}
// static
void
VirtualKey::FillKbdState(PBYTE aKbdState,
const ShiftState aShiftState)
{
NS_ASSERTION(aShiftState < 16, "aShiftState out of range");
if (aShiftState & STATE_SHIFT) {
aKbdState[VK_SHIFT] |= 0x80;
} else {
aKbdState[VK_SHIFT] &= ~0x80;
aKbdState[VK_LSHIFT] &= ~0x80;
aKbdState[VK_RSHIFT] &= ~0x80;
}
if (aShiftState & STATE_CONTROL) {
aKbdState[VK_CONTROL] |= 0x80;
} else {
aKbdState[VK_CONTROL] &= ~0x80;
aKbdState[VK_LCONTROL] &= ~0x80;
aKbdState[VK_RCONTROL] &= ~0x80;
}
if (aShiftState & STATE_ALT) {
aKbdState[VK_MENU] |= 0x80;
} else {
aKbdState[VK_MENU] &= ~0x80;
aKbdState[VK_LMENU] &= ~0x80;
aKbdState[VK_RMENU] &= ~0x80;
}
if (aShiftState & STATE_CAPSLOCK) {
aKbdState[VK_CAPITAL] |= 0x01;
} else {
aKbdState[VK_CAPITAL] &= ~0x01;
}
}
/*****************************************************************************
* mozilla::widget::NativeKey
*****************************************************************************/
NativeKey::NativeKey(nsWindowBase* aWidget,
const MSG& aKeyOrCharMessage,
const ModifierKeyState& aModKeyState,
nsTArray<FakeCharMsg>* aFakeCharMsgs) :
mWidget(aWidget), mMsg(aKeyOrCharMessage), mDOMKeyCode(0),
mModKeyState(aModKeyState), mVirtualKeyCode(0), mOriginalVirtualKeyCode(0),
mFakeCharMsgs(aFakeCharMsgs && aFakeCharMsgs->Length() ?
aFakeCharMsgs : nullptr)
{
MOZ_ASSERT(aWidget);
KeyboardLayout* keyboardLayout = KeyboardLayout::GetInstance();
mKeyboardLayout = keyboardLayout->GetLayout();
mScanCode = WinUtils::GetScanCode(mMsg.lParam);
mIsExtended = WinUtils::IsExtendedScanCode(mMsg.lParam);
switch (mMsg.message) {
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
case WM_KEYUP:
case WM_SYSKEYUP: {
// If the key message is sent from other application like a11y tools, the
// scancode value might not be set proper value. Then, probably the value
// is 0.
// NOTE: If the virtual keycode can be caused by both non-extended key
// and extended key, the API returns the non-extended key's
// scancode. E.g., VK_LEFT causes "4" key on numpad.
if (!mScanCode) {
uint16_t scanCodeEx = ComputeScanCodeExFromVirtualKeyCode(mMsg.wParam);
if (scanCodeEx) {
mScanCode = static_cast<uint8_t>(scanCodeEx & 0xFF);
uint8_t extended = static_cast<uint8_t>((scanCodeEx & 0xFF00) >> 8);
mIsExtended = (extended == 0xE0) || (extended == 0xE1);
}
}
// First, resolve the IME converted virtual keycode to its original
// keycode.
if (mMsg.wParam == VK_PROCESSKEY) {
mOriginalVirtualKeyCode =
static_cast<uint8_t>(::ImmGetVirtualKey(mMsg.hwnd));
} else {
mOriginalVirtualKeyCode = static_cast<uint8_t>(mMsg.wParam);
}
// Most keys are not distinguished as left or right keys.
bool isLeftRightDistinguishedKey = false;
// mOriginalVirtualKeyCode must not distinguish left or right of
// Shift, Control or Alt.
switch (mOriginalVirtualKeyCode) {
case VK_SHIFT:
case VK_CONTROL:
case VK_MENU:
isLeftRightDistinguishedKey = true;
break;
case VK_LSHIFT:
case VK_RSHIFT:
mVirtualKeyCode = mOriginalVirtualKeyCode;
mOriginalVirtualKeyCode = VK_SHIFT;
isLeftRightDistinguishedKey = true;
break;
case VK_LCONTROL:
case VK_RCONTROL:
mVirtualKeyCode = mOriginalVirtualKeyCode;
mOriginalVirtualKeyCode = VK_CONTROL;
isLeftRightDistinguishedKey = true;
break;
case VK_LMENU:
case VK_RMENU:
mVirtualKeyCode = mOriginalVirtualKeyCode;
mOriginalVirtualKeyCode = VK_MENU;
isLeftRightDistinguishedKey = true;
break;
}
// If virtual keycode (left-right distinguished keycode) is already
// computed, we don't need to do anymore.
if (mVirtualKeyCode) {
break;
}
// If the keycode doesn't have LR distinguished keycode, we just set
// mOriginalVirtualKeyCode to mVirtualKeyCode. Note that don't compute
// it from MapVirtualKeyEx() because the scan code might be wrong if
// the message is sent/posted by other application. Then, we will compute
// unexpected keycode from the scan code.
if (!isLeftRightDistinguishedKey) {
break;
}
if (!CanComputeVirtualKeyCodeFromScanCode()) {
// The right control key and the right alt key are extended keys.
// Therefore, we never get VK_RCONTRL and VK_RMENU for the result of
// MapVirtualKeyEx() on WinXP or WinServer2003.
//
// If VK_CONTROL or VK_MENU key message is caused by an extended key,
// we should assume that the right key of them is pressed.
switch (mOriginalVirtualKeyCode) {
case VK_CONTROL:
mVirtualKeyCode = VK_RCONTROL;
break;
case VK_MENU:
mVirtualKeyCode = VK_RMENU;
break;
case VK_SHIFT:
// Neither left shift nor right shift is not an extended key,
// let's use VK_LSHIFT for invalid scan code.
mVirtualKeyCode = VK_LSHIFT;
break;
default:
MOZ_CRASH("Unsupported mOriginalVirtualKeyCode");
}
break;
}
NS_ASSERTION(!mVirtualKeyCode,
"mVirtualKeyCode has been computed already");
// Otherwise, compute the virtual keycode with MapVirtualKeyEx().
mVirtualKeyCode = ComputeVirtualKeyCodeFromScanCodeEx();
// Following code shouldn't be used now because we compute scancode value
// if we detect that the sender doesn't set proper scancode.
// However, the detection might fail. Therefore, let's keep using this.
switch (mOriginalVirtualKeyCode) {
case VK_CONTROL:
if (mVirtualKeyCode != VK_LCONTROL &&
mVirtualKeyCode != VK_RCONTROL) {
mVirtualKeyCode = mIsExtended ? VK_RCONTROL : VK_LCONTROL;
}
break;
case VK_MENU:
if (mVirtualKeyCode != VK_LMENU && mVirtualKeyCode != VK_RMENU) {
mVirtualKeyCode = mIsExtended ? VK_RMENU : VK_LMENU;
}
break;
case VK_SHIFT:
if (mVirtualKeyCode != VK_LSHIFT && mVirtualKeyCode != VK_RSHIFT) {
// Neither left shift nor right shift is not an extended key,
// let's use VK_LSHIFT for invalid scan code.
mVirtualKeyCode = VK_LSHIFT;
}
break;
default:
MOZ_CRASH("Unsupported mOriginalVirtualKeyCode");
}
break;
}
case WM_CHAR:
case WM_UNICHAR:
case WM_SYSCHAR:
// NOTE: If other applications like a11y tools sends WM_*CHAR without
// scancode, we cannot compute virtual keycode. I.e., with such
// applications, we cannot generate proper KeyboardEvent.code value.
// We cannot compute the virtual key code from WM_CHAR message on WinXP
// if it's caused by an extended key.
if (!CanComputeVirtualKeyCodeFromScanCode()) {
break;
}
mVirtualKeyCode = mOriginalVirtualKeyCode =
ComputeVirtualKeyCodeFromScanCodeEx();
NS_ASSERTION(mVirtualKeyCode, "Failed to compute virtual keycode");
break;
default:
MOZ_CRASH("Unsupported message");
}
if (!mVirtualKeyCode) {
mVirtualKeyCode = mOriginalVirtualKeyCode;
}
mDOMKeyCode =
keyboardLayout->ConvertNativeKeyCodeToDOMKeyCode(mOriginalVirtualKeyCode);
mKeyNameIndex =
keyboardLayout->ConvertNativeKeyCodeToKeyNameIndex(mOriginalVirtualKeyCode);
mCodeNameIndex =
KeyboardLayout::ConvertScanCodeToCodeNameIndex(
GetScanCodeWithExtendedFlag());
keyboardLayout->InitNativeKey(*this, mModKeyState);
mIsDeadKey =
(IsFollowedByDeadCharMessage() ||
keyboardLayout->IsDeadKey(mOriginalVirtualKeyCode, mModKeyState));
mIsPrintableKey = KeyboardLayout::IsPrintableCharKey(mOriginalVirtualKeyCode);
}
bool
NativeKey::IsFollowedByDeadCharMessage() const
{
MSG nextMsg;
if (mFakeCharMsgs) {
nextMsg = mFakeCharMsgs->ElementAt(0).GetCharMsg(mMsg.hwnd);
} else {
if (!WinUtils::PeekMessage(&nextMsg, mMsg.hwnd, WM_KEYFIRST, WM_KEYLAST,
PM_NOREMOVE | PM_NOYIELD)) {
return false;
}
}
return IsDeadCharMessage(nextMsg);
}
bool
NativeKey::IsIMEDoingKakuteiUndo() const
{
// Following message pattern is caused by "Kakutei-Undo" of ATOK or WXG:
// ---------------------------------------------------------------------------
// WM_KEYDOWN * n (wParam = VK_BACK, lParam = 0x1)
// WM_KEYUP * 1 (wParam = VK_BACK, lParam = 0xC0000001) # ATOK
// WM_IME_STARTCOMPOSITION * 1 (wParam = 0x0, lParam = 0x0)
// WM_IME_COMPOSITION * 1 (wParam = 0x0, lParam = 0x1BF)
// WM_CHAR * n (wParam = VK_BACK, lParam = 0x1)
// WM_KEYUP * 1 (wParam = VK_BACK, lParam = 0xC00E0001)
// ---------------------------------------------------------------------------
// This doesn't match usual key message pattern such as:
// WM_KEYDOWN -> WM_CHAR -> WM_KEYDOWN -> WM_CHAR -> ... -> WM_KEYUP
// See following bugs for the detail.
// https://bugzilla.mozilla.gr.jp/show_bug.cgi?id=2885 (written in Japanese)
// https://bugzilla.mozilla.org/show_bug.cgi?id=194559 (written in English)
MSG startCompositionMsg, compositionMsg, charMsg;
return WinUtils::PeekMessage(&startCompositionMsg, mMsg.hwnd,
WM_IME_STARTCOMPOSITION, WM_IME_STARTCOMPOSITION,
PM_NOREMOVE | PM_NOYIELD) &&
WinUtils::PeekMessage(&compositionMsg, mMsg.hwnd, WM_IME_COMPOSITION,
WM_IME_COMPOSITION, PM_NOREMOVE | PM_NOYIELD) &&
WinUtils::PeekMessage(&charMsg, mMsg.hwnd, WM_CHAR, WM_CHAR,
PM_NOREMOVE | PM_NOYIELD) &&
startCompositionMsg.wParam == 0x0 &&
startCompositionMsg.lParam == 0x0 &&
compositionMsg.wParam == 0x0 &&
compositionMsg.lParam == 0x1BF &&
charMsg.wParam == VK_BACK && charMsg.lParam == 0x1 &&
startCompositionMsg.time <= compositionMsg.time &&
compositionMsg.time <= charMsg.time;
}
UINT
NativeKey::GetScanCodeWithExtendedFlag() const
{
// MapVirtualKeyEx() has been improved for supporting extended keys since
// Vista. When we call it for mapping a scancode of an extended key and
// a virtual keycode, we need to add 0xE000 to the scancode.
// On Win XP and Win Server 2003, this doesn't support. On them, we have
// no way to get virtual keycodes from scancode of extended keys.
if (!mIsExtended || !IsVistaOrLater()) {
return mScanCode;
}
return (0xE000 | mScanCode);
}
uint32_t
NativeKey::GetKeyLocation() const
{
switch (mVirtualKeyCode) {
case VK_LSHIFT:
case VK_LCONTROL:
case VK_LMENU:
case VK_LWIN:
return nsIDOMKeyEvent::DOM_KEY_LOCATION_LEFT;
case VK_RSHIFT:
case VK_RCONTROL:
case VK_RMENU:
case VK_RWIN:
return nsIDOMKeyEvent::DOM_KEY_LOCATION_RIGHT;
case VK_RETURN:
// XXX This code assumes that all keyboard drivers use same mapping.
return !mIsExtended ? nsIDOMKeyEvent::DOM_KEY_LOCATION_STANDARD :
nsIDOMKeyEvent::DOM_KEY_LOCATION_NUMPAD;
case VK_INSERT:
case VK_DELETE:
case VK_END:
case VK_DOWN:
case VK_NEXT:
case VK_LEFT:
case VK_CLEAR:
case VK_RIGHT:
case VK_HOME:
case VK_UP:
case VK_PRIOR:
// XXX This code assumes that all keyboard drivers use same mapping.
return mIsExtended ? nsIDOMKeyEvent::DOM_KEY_LOCATION_STANDARD :
nsIDOMKeyEvent::DOM_KEY_LOCATION_NUMPAD;
// NumLock key isn't included due to IE9's behavior.
case VK_NUMPAD0:
case VK_NUMPAD1:
case VK_NUMPAD2:
case VK_NUMPAD3:
case VK_NUMPAD4:
case VK_NUMPAD5:
case VK_NUMPAD6:
case VK_NUMPAD7:
case VK_NUMPAD8:
case VK_NUMPAD9:
case VK_DECIMAL:
case VK_DIVIDE:
case VK_MULTIPLY:
case VK_SUBTRACT:
case VK_ADD:
// Separator key of Brazilian keyboard or JIS keyboard for Mac
case VK_ABNT_C2:
return nsIDOMKeyEvent::DOM_KEY_LOCATION_NUMPAD;
case VK_SHIFT:
case VK_CONTROL:
case VK_MENU:
NS_WARNING("Failed to decide the key location?");
default:
return nsIDOMKeyEvent::DOM_KEY_LOCATION_STANDARD;
}
}
bool
NativeKey::CanComputeVirtualKeyCodeFromScanCode() const
{
// Vista or later supports ScanCodeEx.
if (IsVistaOrLater()) {
return true;
}
// Otherwise, MapVirtualKeyEx() can compute virtual keycode only with
// non-extended key.
return !mIsExtended;
}
uint8_t
NativeKey::ComputeVirtualKeyCodeFromScanCode() const
{
return static_cast<uint8_t>(
::MapVirtualKeyEx(mScanCode, MAPVK_VSC_TO_VK, mKeyboardLayout));
}
uint8_t
NativeKey::ComputeVirtualKeyCodeFromScanCodeEx() const
{
if (NS_WARN_IF(!CanComputeVirtualKeyCodeFromScanCode())) {
return 0;
}
return static_cast<uint8_t>(
::MapVirtualKeyEx(GetScanCodeWithExtendedFlag(), MAPVK_VSC_TO_VK_EX,
mKeyboardLayout));
}
uint16_t
NativeKey::ComputeScanCodeExFromVirtualKeyCode(UINT aVirtualKeyCode) const
{
return static_cast<uint16_t>(
::MapVirtualKeyEx(aVirtualKeyCode,
IsVistaOrLater() ? MAPVK_VK_TO_VSC_EX :
MAPVK_VK_TO_VSC,
mKeyboardLayout));
}
char16_t
NativeKey::ComputeUnicharFromScanCode() const
{
return static_cast<char16_t>(
::MapVirtualKeyEx(ComputeVirtualKeyCodeFromScanCode(),
MAPVK_VK_TO_CHAR, mKeyboardLayout));
}
void
NativeKey::InitKeyEvent(WidgetKeyboardEvent& aKeyEvent) const
{
InitKeyEvent(aKeyEvent, mModKeyState);
}
void
NativeKey::InitKeyEvent(WidgetKeyboardEvent& aKeyEvent,
const ModifierKeyState& aModKeyState) const
{
nsIntPoint point(0, 0);
mWidget->InitEvent(aKeyEvent, &point);
switch (aKeyEvent.message) {
case NS_KEY_DOWN:
aKeyEvent.keyCode = mDOMKeyCode;
// Unique id for this keydown event and its associated keypress.
sUniqueKeyEventId++;
aKeyEvent.mUniqueId = sUniqueKeyEventId;
break;
case NS_KEY_UP:
aKeyEvent.keyCode = mDOMKeyCode;
// Set defaultPrevented of the key event if the VK_MENU is not a system
// key release, so that the menu bar does not trigger. This helps avoid
// triggering the menu bar for ALT key accelerators used in assistive
// technologies such as Window-Eyes and ZoomText or for switching open
// state of IME.
aKeyEvent.mFlags.mDefaultPrevented =
(mOriginalVirtualKeyCode == VK_MENU && mMsg.message != WM_SYSKEYUP);
break;
case NS_KEY_PRESS:
aKeyEvent.mUniqueId = sUniqueKeyEventId;
break;
default:
MOZ_CRASH("Invalid event message");
}
aKeyEvent.mIsRepeat = IsRepeat();
aKeyEvent.mKeyNameIndex = mKeyNameIndex;
if (mKeyNameIndex == KEY_NAME_INDEX_USE_STRING) {
aKeyEvent.mKeyValue = mCommittedCharsAndModifiers.ToString();
}
aKeyEvent.mCodeNameIndex = mCodeNameIndex;
MOZ_ASSERT(mCodeNameIndex != CODE_NAME_INDEX_USE_STRING);
aKeyEvent.location = GetKeyLocation();
aModKeyState.InitInputEvent(aKeyEvent);
}
bool
NativeKey::DispatchKeyEvent(WidgetKeyboardEvent& aKeyEvent,
const MSG* aMsgSentToPlugin) const
{
if (mWidget->Destroyed()) {
MOZ_CRASH("NativeKey tries to dispatch a key event on destroyed widget");
}
KeyboardLayout::NotifyIdleServiceOfUserActivity();
NPEvent pluginEvent;
if (aMsgSentToPlugin &&
mWidget->GetInputContext().mIMEState.mEnabled == IMEState::PLUGIN) {
pluginEvent.event = aMsgSentToPlugin->message;
pluginEvent.wParam = aMsgSentToPlugin->wParam;
pluginEvent.lParam = aMsgSentToPlugin->lParam;
aKeyEvent.mPluginEvent.Copy(pluginEvent);
}
return (mWidget->DispatchKeyboardEvent(&aKeyEvent) || mWidget->Destroyed());
}
bool
NativeKey::HandleKeyDownMessage(bool* aEventDispatched) const
{
MOZ_ASSERT(IsKeyDownMessage());
if (aEventDispatched) {
*aEventDispatched = false;
}
bool defaultPrevented = false;
if (mFakeCharMsgs ||
!RedirectedKeyDownMessageManager::IsRedirectedMessage(mMsg)) {
// Ignore [shift+]alt+space so the OS can handle it.
if (mModKeyState.IsAlt() && !mModKeyState.IsControl() &&
mVirtualKeyCode == VK_SPACE) {
return false;
}
bool isIMEEnabled = WinUtils::IsIMEEnabled(mWidget->GetInputContext());
WidgetKeyboardEvent keydownEvent(true, NS_KEY_DOWN, mWidget);
InitKeyEvent(keydownEvent, mModKeyState);
if (aEventDispatched) {
*aEventDispatched = true;
}
defaultPrevented = DispatchKeyEvent(keydownEvent, &mMsg);
if (mWidget->Destroyed()) {
return true;
}
// If IMC wasn't associated to the window but is associated it now (i.e.,
// focus is moved from a non-editable editor to an editor by keydown
// event handler), WM_CHAR and WM_SYSCHAR shouldn't cause first character
// inputting if IME is opened. But then, we should redirect the native
// keydown message to IME.
// However, note that if focus has been already moved to another
// application, we shouldn't redirect the message to it because the keydown
// message is processed by us, so, nobody shouldn't process it.
HWND focusedWnd = ::GetFocus();
if (!defaultPrevented && !mFakeCharMsgs && focusedWnd &&
!mWidget->PluginHasFocus() && !isIMEEnabled &&
WinUtils::IsIMEEnabled(mWidget->GetInputContext())) {
RedirectedKeyDownMessageManager::RemoveNextCharMessage(focusedWnd);
INPUT keyinput;
keyinput.type = INPUT_KEYBOARD;
keyinput.ki.wVk = mOriginalVirtualKeyCode;
keyinput.ki.wScan = mScanCode;
keyinput.ki.dwFlags = KEYEVENTF_SCANCODE;
if (mIsExtended) {
keyinput.ki.dwFlags |= KEYEVENTF_EXTENDEDKEY;
}
keyinput.ki.time = 0;
keyinput.ki.dwExtraInfo = 0;
RedirectedKeyDownMessageManager::WillRedirect(mMsg, defaultPrevented);
::SendInput(1, &keyinput, sizeof(keyinput));
// Return here. We shouldn't dispatch keypress event for this WM_KEYDOWN.
// If it's needed, it will be dispatched after next (redirected)
// WM_KEYDOWN.
return true;
}
} else {
defaultPrevented = RedirectedKeyDownMessageManager::DefaultPrevented();
// If this is redirected keydown message, we have dispatched the keydown
// event already.
if (aEventDispatched) {
*aEventDispatched = true;
}
}
RedirectedKeyDownMessageManager::Forget();
// If the key was processed by IME, we shouldn't dispatch keypress event.
if (mOriginalVirtualKeyCode == VK_PROCESSKEY) {
return defaultPrevented;
}
// Don't dispatch keypress event for modifier keys.
switch (mDOMKeyCode) {
case NS_VK_SHIFT:
case NS_VK_CONTROL:
case NS_VK_ALT:
case NS_VK_CAPS_LOCK:
case NS_VK_NUM_LOCK:
case NS_VK_SCROLL_LOCK:
case NS_VK_WIN:
return defaultPrevented;
}
if (defaultPrevented) {
DispatchPluginEventsAndDiscardsCharMessages();
return true;
}
// If we won't be getting a WM_CHAR, WM_SYSCHAR or WM_DEADCHAR, synthesize a
// keypress for almost all keys
if (NeedsToHandleWithoutFollowingCharMessages()) {
return (DispatchPluginEventsAndDiscardsCharMessages() ||
DispatchKeyPressEventsWithKeyboardLayout());
}
MSG followingCharMsg;
if (GetFollowingCharMessage(followingCharMsg)) {
// Even if there was char message, it might be redirected by different
// window (perhaps, focus move?). Then, we shouldn't continue to handle
// the message since no input should occur on the window.
if (followingCharMsg.message == WM_NULL ||
followingCharMsg.hwnd != mMsg.hwnd) {
return false;
}
return DispatchKeyPressEventForFollowingCharMessage(followingCharMsg);
}
if (!mModKeyState.IsControl() && !mModKeyState.IsAlt() &&
!mModKeyState.IsWin() && mIsPrintableKey) {
// If this is simple KeyDown event but next message is not WM_CHAR,
// this event may not input text, so we should ignore this event.
// See bug 314130.
return false;
}
if (mIsDeadKey) {
return false;
}
return DispatchKeyPressEventsWithKeyboardLayout();
}
bool
NativeKey::HandleCharMessage(const MSG& aCharMsg,
bool* aEventDispatched) const
{
MOZ_ASSERT(IsKeyDownMessage() || IsPrintableCharMessage(mMsg));
MOZ_ASSERT(IsPrintableCharMessage(aCharMsg.message));
if (aEventDispatched) {
*aEventDispatched = false;
}
// Alt+Space key is handled by OS, we shouldn't touch it.
if (mModKeyState.IsAlt() && !mModKeyState.IsControl() &&
mVirtualKeyCode == VK_SPACE) {
return false;
}
// Bug 818235: Ignore Ctrl+Enter.
if (!mModKeyState.IsAlt() && mModKeyState.IsControl() &&
mVirtualKeyCode == VK_RETURN) {
return false;
}
// XXXmnakao I think that if aNativeKeyDown is null, such lonely WM_CHAR
// should cause composition events because they are not caused
// by actual keyboard operation.
static const char16_t U_SPACE = 0x20;
static const char16_t U_EQUAL = 0x3D;
// First, handle normal text input or non-printable key case here.
if ((!mModKeyState.IsAlt() && !mModKeyState.IsControl()) ||
mModKeyState.IsAltGr() ||
(mOriginalVirtualKeyCode &&
!KeyboardLayout::IsPrintableCharKey(mOriginalVirtualKeyCode))) {
WidgetKeyboardEvent keypressEvent(true, NS_KEY_PRESS, mWidget);
if (aCharMsg.wParam >= U_SPACE) {
keypressEvent.charCode = static_cast<uint32_t>(aCharMsg.wParam);
} else {
keypressEvent.keyCode = mDOMKeyCode;
}
// When AltGr (Alt+Ctrl) is pressed, that causes normal text input.
// At this time, if either alt or ctrl flag is set, nsEditor ignores the
// keypress event. For avoiding this issue, we should remove ctrl and alt
// flags.
ModifierKeyState modKeyState(mModKeyState);
modKeyState.Unset(MODIFIER_ALT | MODIFIER_CONTROL);
InitKeyEvent(keypressEvent, modKeyState);
if (aEventDispatched) {
*aEventDispatched = true;
}
return DispatchKeyEvent(keypressEvent, &aCharMsg);
}
// XXX It seems that following code was implemented for shortcut key
// handling. However, it's now handled in WM_KEYDOWN message handler.
// So, this actually runs only when WM_CHAR is sent/posted without
// WM_KEYDOWN. I think that we don't need to keypress event in such
// case especially for shortcut keys.
char16_t uniChar;
// Ctrl+A Ctrl+Z, see Programming Windows 3.1 page 110 for details
if (mModKeyState.IsControl() && aCharMsg.wParam <= 0x1A) {
// Bug 16486: Need to account for shift here.
uniChar = aCharMsg.wParam - 1 + (mModKeyState.IsShift() ? 'A' : 'a');
} else if (mModKeyState.IsControl() && aCharMsg.wParam <= 0x1F) {
// Bug 50255: <ctrl><[> and <ctrl><]> are not being processed.
// also fixes ctrl+\ (x1c), ctrl+^ (x1e) and ctrl+_ (x1f)
// for some reason the keypress handler need to have the uniChar code set
// with the addition of a upper case A not the lower case.
uniChar = aCharMsg.wParam - 1 + 'A';
} else if (aCharMsg.wParam < U_SPACE ||
(aCharMsg.wParam == U_EQUAL && mModKeyState.IsControl())) {
uniChar = 0;
} else {
uniChar = aCharMsg.wParam;
}
// Bug 50255 and Bug 351310: Keep the characters unshifted for shortcuts and
// accesskeys and make sure that numbers are always passed as such.
if (uniChar && (mModKeyState.IsControl() || mModKeyState.IsAlt())) {
KeyboardLayout* keyboardLayout = KeyboardLayout::GetInstance();
char16_t unshiftedCharCode =
(mVirtualKeyCode >= '0' && mVirtualKeyCode <= '9') ?
mVirtualKeyCode : mModKeyState.IsShift() ?
ComputeUnicharFromScanCode() : 0;
// Ignore diacritics (top bit set) and key mapping errors (char code 0)
if (static_cast<int32_t>(unshiftedCharCode) > 0) {
uniChar = unshiftedCharCode;
}
}
// Bug 285161 and Bug 295095: They were caused by the initial fix for
// bug 178110. When pressing (alt|ctrl)+char, the char must be lowercase
// unless shift is pressed too.
if (!mModKeyState.IsShift() &&
(mModKeyState.IsAlt() || mModKeyState.IsControl())) {
uniChar = towlower(uniChar);
}
WidgetKeyboardEvent keypressEvent(true, NS_KEY_PRESS, mWidget);
keypressEvent.charCode = uniChar;
if (!keypressEvent.charCode) {
keypressEvent.keyCode = mDOMKeyCode;
}
InitKeyEvent(keypressEvent, mModKeyState);
if (aEventDispatched) {
*aEventDispatched = true;
}
return DispatchKeyEvent(keypressEvent, &aCharMsg);
}
bool
NativeKey::HandleKeyUpMessage(bool* aEventDispatched) const
{
MOZ_ASSERT(IsKeyUpMessage());
if (aEventDispatched) {
*aEventDispatched = false;
}
// Ignore [shift+]alt+space so the OS can handle it.
if (mModKeyState.IsAlt() && !mModKeyState.IsControl() &&
mVirtualKeyCode == VK_SPACE) {
return false;
}
WidgetKeyboardEvent keyupEvent(true, NS_KEY_UP, mWidget);
InitKeyEvent(keyupEvent, mModKeyState);
if (aEventDispatched) {
*aEventDispatched = true;
}
return DispatchKeyEvent(keyupEvent, &mMsg);
}
bool
NativeKey::NeedsToHandleWithoutFollowingCharMessages() const
{
MOZ_ASSERT(IsKeyDownMessage());
// Enter and backspace are always handled here to avoid for example the
// confusion between ctrl-enter and ctrl-J.
if (mDOMKeyCode == NS_VK_RETURN || mDOMKeyCode == NS_VK_BACK) {
return true;
}
// If any modifier keys which may cause printable keys becoming non-printable
// are not pressed, we don't need special handling for the key.
if (!mModKeyState.IsControl() && !mModKeyState.IsAlt() &&
!mModKeyState.IsWin()) {
return false;
}
// If the key event causes dead key event, we don't need to dispatch keypress
// event.
if (mIsDeadKey && mCommittedCharsAndModifiers.IsEmpty()) {
return false;
}
// Even if the key is a printable key, it might cause non-printable character
// input with modifier key(s).
return mIsPrintableKey;
}
#ifdef MOZ_CRASHREPORTER
static nsCString
GetResultOfInSendMessageEx()
{
DWORD ret = ::InSendMessageEx(nullptr);
if (!ret) {
return NS_LITERAL_CSTRING("ISMEX_NOSEND");
}
nsAutoCString result;
if (ret & ISMEX_CALLBACK) {
result = "ISMEX_CALLBACK";
}
if (ret & ISMEX_NOTIFY) {
if (!result.IsEmpty()) {
result += " | ";
}
result += "ISMEX_NOTIFY";
}
if (ret & ISMEX_REPLIED) {
if (!result.IsEmpty()) {
result += " | ";
}
result += "ISMEX_REPLIED";
}
if (ret & ISMEX_SEND) {
if (!result.IsEmpty()) {
result += " | ";
}
result += "ISMEX_SEND";
}
return result;
}
static const char*
GetMessageName(UINT aMessage)
{
switch (aMessage) {
case WM_KEYDOWN: return "WM_KEYDOWN";
case WM_SYSKEYDOWN: return "WM_SYSKEYDOWN";
case WM_KEYUP: return "WM_KEYUP";
case WM_SYSKEYUP: return "WM_SYSKEYUP";
case WM_CHAR: return "WM_CHAR";
case WM_DEADCHAR: return "WM_DEADCHAR";
case WM_SYSCHAR: return "WM_SYSCHAR";
case WM_SYSDEADCHAR: return "WM_SYSDEADCHAR";
case WM_UNICHAR: return "WM_UNICHAR";
case WM_QUIT: return "WM_QUIT";
case WM_NULL: return "WM_NULL";
default: return "Unknown";
}
}
#endif // #ifdef MOZ_CRASHREPORTER
bool
NativeKey::MayBeSameCharMessage(const MSG& aCharMsg1,
const MSG& aCharMsg2) const
{
// NOTE: Although, we don't know when this case occurs, the scan code value
// in lParam may be changed from 0 to something. The changed value
// is different from the scan code of handling keydown message.
static const LPARAM kScanCodeMask = 0x00FF0000;
return
aCharMsg1.message == aCharMsg2.message &&
aCharMsg1.wParam == aCharMsg2.wParam &&
(aCharMsg1.lParam & ~kScanCodeMask) == (aCharMsg2.lParam & ~kScanCodeMask);
}
bool
NativeKey::GetFollowingCharMessage(MSG& aCharMsg) const
{
MOZ_ASSERT(IsKeyDownMessage());
aCharMsg.message = WM_NULL;
if (mFakeCharMsgs) {
FakeCharMsg& fakeCharMsg = mFakeCharMsgs->ElementAt(0);
if (fakeCharMsg.mConsumed) {
return false;
}
MSG charMsg = fakeCharMsg.GetCharMsg(mMsg.hwnd);
fakeCharMsg.mConsumed = true;
if (!IsCharMessage(charMsg)) {
return false;
}
aCharMsg = charMsg;
return true;
}
// If next key message is not char message, we should give up to find a
// related char message for the handling keydown event for now.
// Note that it's possible other applications may send other key message
// after we call TranslateMessage(). That may cause PeekMessage() failing
// to get char message for the handling keydown message.
MSG nextKeyMsg;
if (!WinUtils::PeekMessage(&nextKeyMsg, mMsg.hwnd, WM_KEYFIRST, WM_KEYLAST,
PM_NOREMOVE | PM_NOYIELD) ||
!IsCharMessage(nextKeyMsg)) {
return false;
}
// On Metrofox, PeekMessage() sometimes returns WM_NULL even if we specify
// the message range. So, if it returns WM_NULL, we should retry to get
// the following char message it was found above.
for (uint32_t i = 0; i < 5; i++) {
MSG removedMsg, nextKeyMsgInAllWindows;
bool doCrash = false;
if (!WinUtils::PeekMessage(&removedMsg, mMsg.hwnd,
nextKeyMsg.message, nextKeyMsg.message,
PM_REMOVE | PM_NOYIELD)) {
// We meets unexpected case. We should collect the message queue state
// and crash for reporting the bug.
doCrash = true;
// The char message is redirected to different thread's window by focus
// move or something or just cancelled by external application.
if (!WinUtils::PeekMessage(&nextKeyMsgInAllWindows, 0,
WM_KEYFIRST, WM_KEYLAST,
PM_NOREMOVE | PM_NOYIELD)) {
return true;
}
if (MayBeSameCharMessage(nextKeyMsgInAllWindows, nextKeyMsg)) {
// The char message is redirected to different window created by our
// thread.
if (nextKeyMsgInAllWindows.hwnd != mMsg.hwnd) {
aCharMsg = nextKeyMsgInAllWindows;
return true;
}
// The found char message still in the queue, but PeekMessage() failed
// to remove it only with PM_REMOVE. Although, we don't know why this
// occurs. However, this occurs acctually.
// Try to remove the char message with GetMessage() again.
if (WinUtils::GetMessage(&removedMsg, mMsg.hwnd,
nextKeyMsg.message, nextKeyMsg.message)) {
// Cancel to crash, but we need to check the removed message value.
doCrash = false;
}
}
}
if (doCrash) {
#ifdef MOZ_CRASHREPORTER
nsPrintfCString info("\nPeekMessage() failed to remove char message! "
"\nHandling message: %s (0x%08X), wParam: 0x%08X, "
"lParam: 0x%08X, hwnd=0x%p, InSendMessageEx()=%s, \n"
"Found message: %s (0x%08X), wParam: 0x%08X, "
"lParam: 0x%08X, hwnd=0x%p, "
"\nWM_NULL has been removed: %d, "
"\nNext key message in all windows: %s (0x%08X), "
"wParam: 0x%08X, lParam: 0x%08X, hwnd=0x%p, "
"time=%d, ",
GetMessageName(mMsg.message),
mMsg.message, mMsg.wParam, mMsg.lParam,
nextKeyMsg.hwnd,
GetResultOfInSendMessageEx().get(),
GetMessageName(nextKeyMsg.message),
nextKeyMsg.message, nextKeyMsg.wParam,
nextKeyMsg.lParam, nextKeyMsg.hwnd, i,
GetMessageName(nextKeyMsgInAllWindows.message),
nextKeyMsgInAllWindows.message,
nextKeyMsgInAllWindows.wParam,
nextKeyMsgInAllWindows.lParam,
nextKeyMsgInAllWindows.hwnd,
nextKeyMsgInAllWindows.time);
CrashReporter::AppendAppNotesToCrashReport(info);
MSG nextMsg;
if (WinUtils::PeekMessage(&nextMsg, 0, 0, 0,
PM_NOREMOVE | PM_NOYIELD)) {
nsPrintfCString info("\nNext message in all windows: %s (0x%08X), "
"wParam: 0x%08X, lParam: 0x%08X, hwnd=0x%p, "
"time=%d",
GetMessageName(nextMsg.message),
nextMsg.message, nextMsg.wParam, nextMsg.lParam,
nextMsg.hwnd, nextMsg.time);
CrashReporter::AppendAppNotesToCrashReport(info);
} else {
CrashReporter::AppendAppNotesToCrashReport(
NS_LITERAL_CSTRING("\nThere is no message in any window"));
}
#endif // #ifdef MOZ_CRASHREPORTER
MOZ_CRASH("We lost the following char message");
}
// Retry for the strange case.
if (removedMsg.message == WM_NULL) {
continue;
}
// Typically, this case occurs with WM_DEADCHAR. If the removed message's
// wParam becomes 0, that means that the key event shouldn't cause text
// input. So, let's ignore the strange char message.
if (removedMsg.message == nextKeyMsg.message && !removedMsg.wParam) {
return false;
}
// NOTE: Although, we don't know when this case occurs, the scan code value
// in lParam may be changed from 0 to something. The changed value
// is different from the scan code of handling keydown message.
if (!MayBeSameCharMessage(removedMsg, nextKeyMsg)) {
#ifdef MOZ_CRASHREPORTER
nsPrintfCString info("\nPeekMessage() removed unexpcted char message! "
"\nHandling message: %s (0x%08X), wParam: 0x%08X, "
"lParam: 0x%08X, hwnd=0x%p, InSendMessageEx()=%s, "
"\nFound message: %s (0x%08X), wParam: 0x%08X, "
"lParam: 0x%08X, hwnd=0x%p, "
"\nRemoved message: %s (0x%08X), wParam: 0x%08X, "
"lParam: 0x%08X, hwnd=0x%p, ",
GetMessageName(mMsg.message),
mMsg.message, mMsg.wParam, mMsg.lParam, mMsg.hwnd,
GetResultOfInSendMessageEx().get(),
GetMessageName(nextKeyMsg.message),
nextKeyMsg.message, nextKeyMsg.wParam,
nextKeyMsg.lParam, nextKeyMsg.hwnd,
GetMessageName(removedMsg.message),
removedMsg.message, removedMsg.wParam,
removedMsg.lParam, removedMsg.hwnd);
CrashReporter::AppendAppNotesToCrashReport(info);
// What's the next key message?
MSG nextKeyMsgAfter;
if (WinUtils::PeekMessage(&nextKeyMsgAfter, mMsg.hwnd,
WM_KEYFIRST, WM_KEYLAST,
PM_NOREMOVE | PM_NOYIELD)) {
nsPrintfCString info("\nNext key message after unexpected char message "
"removed: %s (0x%08X), wParam: 0x%08X, "
"lParam: 0x%08X, hwnd=0x%p, ",
GetMessageName(nextKeyMsgAfter.message),
nextKeyMsgAfter.message, nextKeyMsgAfter.wParam,
nextKeyMsgAfter.lParam, nextKeyMsgAfter.hwnd);
CrashReporter::AppendAppNotesToCrashReport(info);
} else {
CrashReporter::AppendAppNotesToCrashReport(
NS_LITERAL_CSTRING("\nThere is no key message after unexpected char "
"message removed, "));
}
// Another window has a key message?
MSG nextKeyMsgInAllWindows;
if (WinUtils::PeekMessage(&nextKeyMsgInAllWindows, 0,
WM_KEYFIRST, WM_KEYLAST,
PM_NOREMOVE | PM_NOYIELD)) {
nsPrintfCString info("\nNext key message in all windows: %s (0x%08X), "
"wParam: 0x%08X, lParam: 0x%08X, hwnd=0x%p.",
GetMessageName(nextKeyMsgInAllWindows.message),
nextKeyMsgInAllWindows.message,
nextKeyMsgInAllWindows.wParam,
nextKeyMsgInAllWindows.lParam,
nextKeyMsgInAllWindows.hwnd);
CrashReporter::AppendAppNotesToCrashReport(info);
} else {
CrashReporter::AppendAppNotesToCrashReport(
NS_LITERAL_CSTRING("\nThere is no key message in any windows."));
}
#endif // #ifdef MOZ_CRASHREPORTER
MOZ_CRASH("PeekMessage() removed unexpected message");
}
aCharMsg = removedMsg;
return true;
}
#ifdef MOZ_CRASHREPORTER
nsPrintfCString info("\nWe lost following char message! "
"\nHandling message: %s (0x%08X), wParam: 0x%08X, "
"lParam: 0x%08X, InSendMessageEx()=%s, \n"
"Found message: %s (0x%08X), wParam: 0x%08X, "
"lParam: 0x%08X, removed a lot of WM_NULL",
GetMessageName(mMsg.message),
mMsg.message, mMsg.wParam, mMsg.lParam,
GetResultOfInSendMessageEx().get(),
GetMessageName(nextKeyMsg.message),
nextKeyMsg.message, nextKeyMsg.wParam,
nextKeyMsg.lParam);
CrashReporter::AppendAppNotesToCrashReport(info);
#endif // #ifdef MOZ_CRASHREPORTER
MOZ_CRASH("We lost the following char message");
return false;
}
bool
NativeKey::DispatchPluginEventsAndDiscardsCharMessages() const
{
MOZ_ASSERT(IsKeyDownMessage());
// Remove a possible WM_CHAR or WM_SYSCHAR messages from the message queue.
// They can be more than one because of:
// * Dead-keys not pairing with base character
// * Some keyboard layouts may map up to 4 characters to the single key
bool anyCharMessagesRemoved = false;
MSG msg;
while (GetFollowingCharMessage(msg)) {
if (msg.message == WM_NULL) {
continue;
}
anyCharMessagesRemoved = true;
// If the window handle is changed, focused window must be changed.
// So, plugin shouldn't handle it anymore.
if (msg.hwnd != mMsg.hwnd) {
break;
}
MOZ_RELEASE_ASSERT(!mWidget->Destroyed(),
"NativeKey tries to dispatch a plugin event on destroyed widget");
mWidget->DispatchPluginEvent(msg);
if (mWidget->Destroyed()) {
return true;
}
}
if (!mFakeCharMsgs && !anyCharMessagesRemoved &&
mDOMKeyCode == NS_VK_BACK && IsIMEDoingKakuteiUndo()) {
// This is for a hack for ATOK and WXG. So, PeekMessage() must scceed!
while (WinUtils::PeekMessage(&msg, mMsg.hwnd, WM_CHAR, WM_CHAR,
PM_REMOVE | PM_NOYIELD)) {
if (msg.message != WM_CHAR) {
MOZ_RELEASE_ASSERT(msg.message == WM_NULL,
"Unexpected message was removed");
continue;
}
MOZ_RELEASE_ASSERT(!mWidget->Destroyed(),
"NativeKey tries to dispatch a plugin event on destroyed widget");
mWidget->DispatchPluginEvent(msg);
return mWidget->Destroyed();
}
MOZ_CRASH("NativeKey failed to get WM_CHAR for ATOK or WXG");
}
return false;
}
bool
NativeKey::DispatchKeyPressEventsWithKeyboardLayout() const
{
MOZ_ASSERT(IsKeyDownMessage());
MOZ_ASSERT(!mIsDeadKey);
KeyboardLayout* keyboardLayout = KeyboardLayout::GetInstance();
UniCharsAndModifiers inputtingChars(mCommittedCharsAndModifiers);
UniCharsAndModifiers shiftedChars;
UniCharsAndModifiers unshiftedChars;
uint32_t shiftedLatinChar = 0;
uint32_t unshiftedLatinChar = 0;
if (!KeyboardLayout::IsPrintableCharKey(mVirtualKeyCode)) {
inputtingChars.Clear();
}
if (mModKeyState.IsControl() ^ mModKeyState.IsAlt()) {
ModifierKeyState capsLockState(
mModKeyState.GetModifiers() & MODIFIER_CAPSLOCK);
unshiftedChars =
keyboardLayout->GetUniCharsAndModifiers(mVirtualKeyCode, capsLockState);
capsLockState.Set(MODIFIER_SHIFT);
shiftedChars =
keyboardLayout->GetUniCharsAndModifiers(mVirtualKeyCode, capsLockState);
// The current keyboard cannot input alphabets or numerics,
// we should append them for Shortcut/Access keys.
// E.g., for Cyrillic keyboard layout.
capsLockState.Unset(MODIFIER_SHIFT);
WidgetUtils::GetLatinCharCodeForKeyCode(mDOMKeyCode,
capsLockState.GetModifiers(),
&unshiftedLatinChar,
&shiftedLatinChar);
// If the shiftedLatinChar isn't 0, the key code is NS_VK_[A-Z].
if (shiftedLatinChar) {
// If the produced characters of the key on current keyboard layout
// are same as computed Latin characters, we shouldn't append the
// Latin characters to alternativeCharCode.
if (unshiftedLatinChar == unshiftedChars.mChars[0] &&
shiftedLatinChar == shiftedChars.mChars[0]) {
shiftedLatinChar = unshiftedLatinChar = 0;
}
} else if (unshiftedLatinChar) {
// If the shiftedLatinChar is 0, the keyCode doesn't produce
// alphabet character. At that time, the character may be produced
// with Shift key. E.g., on French keyboard layout, NS_VK_PERCENT
// key produces LATIN SMALL LETTER U WITH GRAVE (U+00F9) without
// Shift key but with Shift key, it produces '%'.
// If the unshiftedLatinChar is produced by the key on current
// keyboard layout, we shouldn't append it to alternativeCharCode.
if (unshiftedLatinChar == unshiftedChars.mChars[0] ||
unshiftedLatinChar == shiftedChars.mChars[0]) {
unshiftedLatinChar = 0;
}
}
// If the charCode is not ASCII character, we should replace the
// charCode with ASCII character only when Ctrl is pressed.
// But don't replace the charCode when the charCode is not same as
// unmodified characters. In such case, Ctrl is sometimes used for a
// part of character inputting key combination like Shift.
if (mModKeyState.IsControl()) {
uint32_t ch =
mModKeyState.IsShift() ? shiftedLatinChar : unshiftedLatinChar;
if (ch &&
(!inputtingChars.mLength ||
inputtingChars.UniCharsCaseInsensitiveEqual(
mModKeyState.IsShift() ? shiftedChars : unshiftedChars))) {
inputtingChars.Clear();
inputtingChars.Append(ch, mModKeyState.GetModifiers());
}
}
}
if (inputtingChars.IsEmpty() &&
shiftedChars.IsEmpty() && unshiftedChars.IsEmpty()) {
WidgetKeyboardEvent keypressEvent(true, NS_KEY_PRESS, mWidget);
keypressEvent.keyCode = mDOMKeyCode;
InitKeyEvent(keypressEvent, mModKeyState);
return DispatchKeyEvent(keypressEvent);
}
uint32_t longestLength =
std::max(inputtingChars.mLength,
std::max(shiftedChars.mLength, unshiftedChars.mLength));
uint32_t skipUniChars = longestLength - inputtingChars.mLength;
uint32_t skipShiftedChars = longestLength - shiftedChars.mLength;
uint32_t skipUnshiftedChars = longestLength - unshiftedChars.mLength;
UINT keyCode = !inputtingChars.mLength ? mDOMKeyCode : 0;
bool defaultPrevented = false;
for (uint32_t cnt = 0; cnt < longestLength; cnt++) {
uint16_t uniChar, shiftedChar, unshiftedChar;
uniChar = shiftedChar = unshiftedChar = 0;
ModifierKeyState modKeyState(mModKeyState);
if (skipUniChars <= cnt) {
if (cnt - skipUniChars < inputtingChars.mLength) {
// If key in combination with Alt and/or Ctrl produces a different
// character than without them then do not report these flags
// because it is separate keyboard layout shift state. If dead-key
// and base character does not produce a valid composite character
// then both produced dead-key character and following base
// character may have different modifier flags, too.
modKeyState.Unset(MODIFIER_SHIFT | MODIFIER_CONTROL | MODIFIER_ALT |
MODIFIER_ALTGRAPH | MODIFIER_CAPSLOCK);
modKeyState.Set(inputtingChars.mModifiers[cnt - skipUniChars]);
}
uniChar = inputtingChars.mChars[cnt - skipUniChars];
}
if (skipShiftedChars <= cnt)
shiftedChar = shiftedChars.mChars[cnt - skipShiftedChars];
if (skipUnshiftedChars <= cnt)
unshiftedChar = unshiftedChars.mChars[cnt - skipUnshiftedChars];
nsAutoTArray<AlternativeCharCode, 5> altArray;
if (shiftedChar || unshiftedChar) {
AlternativeCharCode chars(unshiftedChar, shiftedChar);
altArray.AppendElement(chars);
}
if (cnt == longestLength - 1) {
if (unshiftedLatinChar || shiftedLatinChar) {
AlternativeCharCode chars(unshiftedLatinChar, shiftedLatinChar);
altArray.AppendElement(chars);
}
// Typically, following virtual keycodes are used for a key which can
// input the character. However, these keycodes are also used for
// other keys on some keyboard layout. E.g., in spite of Shift+'1'
// inputs '+' on Thai keyboard layout, a key which is at '=/+'
// key on ANSI keyboard layout is VK_OEM_PLUS. Native applications
// handle it as '+' key if Ctrl key is pressed.
char16_t charForOEMKeyCode = 0;
switch (mVirtualKeyCode) {
case VK_OEM_PLUS: charForOEMKeyCode = '+'; break;
case VK_OEM_COMMA: charForOEMKeyCode = ','; break;
case VK_OEM_MINUS: charForOEMKeyCode = '-'; break;
case VK_OEM_PERIOD: charForOEMKeyCode = '.'; break;
}
if (charForOEMKeyCode &&
charForOEMKeyCode != unshiftedChars.mChars[0] &&
charForOEMKeyCode != shiftedChars.mChars[0] &&
charForOEMKeyCode != unshiftedLatinChar &&
charForOEMKeyCode != shiftedLatinChar) {
AlternativeCharCode OEMChars(charForOEMKeyCode, charForOEMKeyCode);
altArray.AppendElement(OEMChars);
}
}
WidgetKeyboardEvent keypressEvent(true, NS_KEY_PRESS, mWidget);
keypressEvent.charCode = uniChar;
keypressEvent.alternativeCharCodes.AppendElements(altArray);
InitKeyEvent(keypressEvent, modKeyState);
defaultPrevented = (DispatchKeyEvent(keypressEvent) || defaultPrevented);
if (mWidget->Destroyed()) {
return true;
}
}
return defaultPrevented;
}
bool
NativeKey::DispatchKeyPressEventForFollowingCharMessage(
const MSG& aCharMsg) const
{
MOZ_ASSERT(IsKeyDownMessage());
if (mFakeCharMsgs) {
if (IsDeadCharMessage(aCharMsg)) {
return false;
}
#ifdef DEBUG
if (mIsPrintableKey) {
nsPrintfCString log(
"mOriginalVirtualKeyCode=0x%02X, mCommittedCharsAndModifiers={ "
"mChars=[ 0x%04X, 0x%04X, 0x%04X, 0x%04X, 0x%04X ], mLength=%d }, "
"wParam=0x%04X",
mOriginalVirtualKeyCode, mCommittedCharsAndModifiers.mChars[0],
mCommittedCharsAndModifiers.mChars[1],
mCommittedCharsAndModifiers.mChars[2],
mCommittedCharsAndModifiers.mChars[3],
mCommittedCharsAndModifiers.mChars[4],
mCommittedCharsAndModifiers.mLength, aCharMsg.wParam);
if (mCommittedCharsAndModifiers.IsEmpty()) {
log.Insert("length is zero: ", 0);
NS_ERROR(log.get());
NS_ABORT();
} else if (mCommittedCharsAndModifiers.mChars[0] != aCharMsg.wParam) {
log.Insert("character mismatch: ", 0);
NS_ERROR(log.get());
NS_ABORT();
}
}
#endif // #ifdef DEBUG
return HandleCharMessage(aCharMsg);
}
if (IsDeadCharMessage(aCharMsg)) {
if (!mWidget->PluginHasFocus()) {
return false;
}
return (mWidget->DispatchPluginEvent(aCharMsg) || mWidget->Destroyed());
}
bool defaultPrevented = HandleCharMessage(aCharMsg);
// If a syschar keypress wasn't processed, Windows may want to
// handle it to activate a native menu.
if (!defaultPrevented && IsSysCharMessage(aCharMsg)) {
::DefWindowProcW(aCharMsg.hwnd, aCharMsg.message,
aCharMsg.wParam, aCharMsg.lParam);
}
return defaultPrevented;
}
/*****************************************************************************
* mozilla::widget::KeyboardLayout
*****************************************************************************/
KeyboardLayout* KeyboardLayout::sInstance = nullptr;
nsIIdleServiceInternal* KeyboardLayout::sIdleService = nullptr;
#ifdef PR_LOGGING
PRLogModuleInfo* sKeyboardLayoutLogger = nullptr;
#endif // #ifdef PR_LOGGING
// static
KeyboardLayout*
KeyboardLayout::GetInstance()
{
if (!sInstance) {
#ifdef PR_LOGGING
if (!sKeyboardLayoutLogger) {
sKeyboardLayoutLogger = PR_NewLogModule("KeyboardLayoutWidgets");
}
#endif // #ifdef PR_LOGGING
sInstance = new KeyboardLayout();
nsCOMPtr<nsIIdleServiceInternal> idleService =
do_GetService("@mozilla.org/widget/idleservice;1");
// The refcount will be decreased at shut down.
sIdleService = idleService.forget().take();
}
return sInstance;
}
// static
void
KeyboardLayout::Shutdown()
{
delete sInstance;
sInstance = nullptr;
NS_IF_RELEASE(sIdleService);
}
// static
void
KeyboardLayout::NotifyIdleServiceOfUserActivity()
{
sIdleService->ResetIdleTimeOut(0);
}
KeyboardLayout::KeyboardLayout() :
mKeyboardLayout(0), mIsOverridden(false),
mIsPendingToRestoreKeyboardLayout(false)
{
mDeadKeyTableListHead = nullptr;
// NOTE: LoadLayout() should be called via OnLayoutChange().
}
KeyboardLayout::~KeyboardLayout()
{
ReleaseDeadKeyTables();
}
bool
KeyboardLayout::IsPrintableCharKey(uint8_t aVirtualKey)
{
return GetKeyIndex(aVirtualKey) >= 0;
}
WORD
KeyboardLayout::ComputeScanCodeForVirtualKeyCode(uint8_t aVirtualKeyCode) const
{
return static_cast<WORD>(
::MapVirtualKeyEx(aVirtualKeyCode, MAPVK_VK_TO_VSC, GetLayout()));
}
bool
KeyboardLayout::IsDeadKey(uint8_t aVirtualKey,
const ModifierKeyState& aModKeyState) const
{
int32_t virtualKeyIndex = GetKeyIndex(aVirtualKey);
if (virtualKeyIndex < 0) {
return false;
}
return mVirtualKeys[virtualKeyIndex].IsDeadKey(
VirtualKey::ModifiersToShiftState(aModKeyState.GetModifiers()));
}
void
KeyboardLayout::InitNativeKey(NativeKey& aNativeKey,
const ModifierKeyState& aModKeyState)
{
if (mIsPendingToRestoreKeyboardLayout) {
LoadLayout(::GetKeyboardLayout(0));
}
uint8_t virtualKey = aNativeKey.mOriginalVirtualKeyCode;
int32_t virtualKeyIndex = GetKeyIndex(virtualKey);
if (virtualKeyIndex < 0) {
// Does not produce any printable characters, but still preserves the
// dead-key state.
return;
}
MOZ_ASSERT(aNativeKey.mKeyNameIndex == KEY_NAME_INDEX_USE_STRING,
"Printable key's key name index must be KEY_NAME_INDEX_USE_STRING");
bool isKeyDown = aNativeKey.IsKeyDownMessage();
uint8_t shiftState =
VirtualKey::ModifiersToShiftState(aModKeyState.GetModifiers());
if (mVirtualKeys[virtualKeyIndex].IsDeadKey(shiftState)) {
if ((isKeyDown && mActiveDeadKey < 0) ||
(!isKeyDown && mActiveDeadKey == virtualKey)) {
// First dead key event doesn't generate characters.
if (isKeyDown) {
// Dead-key state activated at keydown.
mActiveDeadKey = virtualKey;
mDeadKeyShiftState = shiftState;
}
UniCharsAndModifiers deadChars =
mVirtualKeys[virtualKeyIndex].GetNativeUniChars(shiftState);
NS_ASSERTION(deadChars.mLength == 1,
"dead key must generate only one character");
aNativeKey.mKeyNameIndex =
WidgetUtils::GetDeadKeyNameIndex(deadChars.mChars[0]);
return;
}
// Dead key followed by another dead key causes inputting both character.
// However, at keydown message handling, we need to forget the first
// dead key because there is no guarantee coming WM_KEYUP for the second
// dead key before next WM_KEYDOWN. E.g., due to auto key repeat or
// pressing another dead key before releasing current key. Therefore,
// we can set only a character for current key for keyup event.
if (mActiveDeadKey < 0) {
aNativeKey.mCommittedCharsAndModifiers =
mVirtualKeys[virtualKeyIndex].GetUniChars(shiftState);
return;
}
int32_t activeDeadKeyIndex = GetKeyIndex(mActiveDeadKey);
if (activeDeadKeyIndex < 0 || activeDeadKeyIndex >= NS_NUM_OF_KEYS) {
#if defined(DEBUG) || defined(MOZ_CRASHREPORTER)
nsPrintfCString warning("The virtual key index (%d) of mActiveDeadKey "
"(0x%02X) is not a printable key (virtualKey="
"0x%02X)",
activeDeadKeyIndex, mActiveDeadKey, virtualKey);
NS_WARNING(warning.get());
#ifdef MOZ_CRASHREPORTER
CrashReporter::AppendAppNotesToCrashReport(
NS_LITERAL_CSTRING("\n") + warning);
#endif // #ifdef MOZ_CRASHREPORTER
#endif // #if defined(DEBUG) || defined(MOZ_CRASHREPORTER)
MOZ_CRASH("Trying to reference out of range of mVirtualKeys");
}
UniCharsAndModifiers prevDeadChars =
mVirtualKeys[activeDeadKeyIndex].GetUniChars(mDeadKeyShiftState);
UniCharsAndModifiers newChars =
mVirtualKeys[virtualKeyIndex].GetUniChars(shiftState);
// But keypress events should be fired for each committed character.
aNativeKey.mCommittedCharsAndModifiers = prevDeadChars + newChars;
if (isKeyDown) {
DeactivateDeadKeyState();
}
return;
}
UniCharsAndModifiers baseChars =
mVirtualKeys[virtualKeyIndex].GetUniChars(shiftState);
if (mActiveDeadKey < 0) {
// No dead-keys are active. Just return the produced characters.
aNativeKey.mCommittedCharsAndModifiers = baseChars;
return;
}
// Dead-key was active. See if pressed base character does produce
// valid composite character.
int32_t activeDeadKeyIndex = GetKeyIndex(mActiveDeadKey);
char16_t compositeChar = (baseChars.mLength == 1 && baseChars.mChars[0]) ?
mVirtualKeys[activeDeadKeyIndex].GetCompositeChar(mDeadKeyShiftState,
baseChars.mChars[0]) : 0;
if (compositeChar) {
// Active dead-key and base character does produce exactly one
// composite character.
aNativeKey.mCommittedCharsAndModifiers.Append(compositeChar,
baseChars.mModifiers[0]);
if (isKeyDown) {
DeactivateDeadKeyState();
}
return;
}
// There is no valid dead-key and base character combination.
// Return dead-key character followed by base character.
UniCharsAndModifiers deadChars =
mVirtualKeys[activeDeadKeyIndex].GetUniChars(mDeadKeyShiftState);
// But keypress events should be fired for each committed character.
aNativeKey.mCommittedCharsAndModifiers = deadChars + baseChars;
if (isKeyDown) {
DeactivateDeadKeyState();
}
return;
}
UniCharsAndModifiers
KeyboardLayout::GetUniCharsAndModifiers(
uint8_t aVirtualKey,
const ModifierKeyState& aModKeyState) const
{
UniCharsAndModifiers result;
int32_t key = GetKeyIndex(aVirtualKey);
if (key < 0) {
return result;
}
return mVirtualKeys[key].
GetUniChars(VirtualKey::ModifiersToShiftState(aModKeyState.GetModifiers()));
}
void
KeyboardLayout::LoadLayout(HKL aLayout)
{
mIsPendingToRestoreKeyboardLayout = false;
if (mKeyboardLayout == aLayout) {
return;
}
mKeyboardLayout = aLayout;
BYTE kbdState[256];
memset(kbdState, 0, sizeof(kbdState));
BYTE originalKbdState[256];
// Bitfield with all shift states that have at least one dead-key.
uint16_t shiftStatesWithDeadKeys = 0;
// Bitfield with all shift states that produce any possible dead-key base
// characters.
uint16_t shiftStatesWithBaseChars = 0;
mActiveDeadKey = -1;
ReleaseDeadKeyTables();
::GetKeyboardState(originalKbdState);
// For each shift state gather all printable characters that are produced
// for normal case when no any dead-key is active.
for (VirtualKey::ShiftState shiftState = 0; shiftState < 16; shiftState++) {
VirtualKey::FillKbdState(kbdState, shiftState);
for (uint32_t virtualKey = 0; virtualKey < 256; virtualKey++) {
int32_t vki = GetKeyIndex(virtualKey);
if (vki < 0) {
continue;
}
NS_ASSERTION(uint32_t(vki) < ArrayLength(mVirtualKeys), "invalid index");
char16_t uniChars[5];
int32_t ret =
::ToUnicodeEx(virtualKey, 0, kbdState, (LPWSTR)uniChars,
ArrayLength(uniChars), 0, mKeyboardLayout);
// dead-key
if (ret < 0) {
shiftStatesWithDeadKeys |= (1 << shiftState);
// Repeat dead-key to deactivate it and get its character
// representation.
char16_t deadChar[2];
ret = ::ToUnicodeEx(virtualKey, 0, kbdState, (LPWSTR)deadChar,
ArrayLength(deadChar), 0, mKeyboardLayout);
NS_ASSERTION(ret == 2, "Expecting twice repeated dead-key character");
mVirtualKeys[vki].SetDeadChar(shiftState, deadChar[0]);
} else {
if (ret == 1) {
// dead-key can pair only with exactly one base character.
shiftStatesWithBaseChars |= (1 << shiftState);
}
mVirtualKeys[vki].SetNormalChars(shiftState, uniChars, ret);
}
}
}
// Now process each dead-key to find all its base characters and resulting
// composite characters.
for (VirtualKey::ShiftState shiftState = 0; shiftState < 16; shiftState++) {
if (!(shiftStatesWithDeadKeys & (1 << shiftState))) {
continue;
}
VirtualKey::FillKbdState(kbdState, shiftState);
for (uint32_t virtualKey = 0; virtualKey < 256; virtualKey++) {
int32_t vki = GetKeyIndex(virtualKey);
if (vki >= 0 && mVirtualKeys[vki].IsDeadKey(shiftState)) {
DeadKeyEntry deadKeyArray[256];
int32_t n = GetDeadKeyCombinations(virtualKey, kbdState,
shiftStatesWithBaseChars,
deadKeyArray,
ArrayLength(deadKeyArray));
const DeadKeyTable* dkt =
mVirtualKeys[vki].MatchingDeadKeyTable(deadKeyArray, n);
if (!dkt) {
dkt = AddDeadKeyTable(deadKeyArray, n);
}
mVirtualKeys[vki].AttachDeadKeyTable(shiftState, dkt);
}
}
}
::SetKeyboardState(originalKbdState);
#ifdef PR_LOGGING
if (PR_LOG_TEST(sKeyboardLayoutLogger, PR_LOG_DEBUG)) {
static const UINT kExtendedScanCode[] = { 0x0000, 0xE000 };
static const UINT kMapType =
IsVistaOrLater() ? MAPVK_VSC_TO_VK_EX : MAPVK_VSC_TO_VK;
PR_LOG(sKeyboardLayoutLogger, PR_LOG_DEBUG,
("Logging virtual keycode values for scancode (0x%p)...",
mKeyboardLayout));
for (uint32_t i = 0; i < ArrayLength(kExtendedScanCode); i++) {
for (uint32_t j = 1; j <= 0xFF; j++) {
UINT scanCode = kExtendedScanCode[i] + j;
UINT virtualKeyCode =
::MapVirtualKeyEx(scanCode, kMapType, mKeyboardLayout);
PR_LOG(sKeyboardLayoutLogger, PR_LOG_DEBUG,
("0x%04X, %s", scanCode, kVirtualKeyName[virtualKeyCode]));
}
// XP and Server 2003 don't support 0xE0 prefix of the scancode.
// Therefore, we don't need to continue on them.
if (!IsVistaOrLater()) {
break;
}
}
}
#endif // #ifdef PR_LOGGING
}
inline int32_t
KeyboardLayout::GetKeyIndex(uint8_t aVirtualKey)
{
// Currently these 68 (NS_NUM_OF_KEYS) virtual keys are assumed
// to produce visible representation:
// 0x20 - VK_SPACE ' '
// 0x30..0x39 '0'..'9'
// 0x41..0x5A 'A'..'Z'
// 0x60..0x69 '0'..'9' on numpad
// 0x6A - VK_MULTIPLY '*' on numpad
// 0x6B - VK_ADD '+' on numpad
// 0x6D - VK_SUBTRACT '-' on numpad
// 0x6E - VK_DECIMAL '.' on numpad
// 0x6F - VK_DIVIDE '/' on numpad
// 0x6E - VK_DECIMAL '.'
// 0xBA - VK_OEM_1 ';:' for US
// 0xBB - VK_OEM_PLUS '+' any country
// 0xBC - VK_OEM_COMMA ',' any country
// 0xBD - VK_OEM_MINUS '-' any country
// 0xBE - VK_OEM_PERIOD '.' any country
// 0xBF - VK_OEM_2 '/?' for US
// 0xC0 - VK_OEM_3 '`~' for US
// 0xC1 - VK_ABNT_C1 '/?' for Brazilian
// 0xC2 - VK_ABNT_C2 separator key on numpad (Brazilian or JIS for Mac)
// 0xDB - VK_OEM_4 '[{' for US
// 0xDC - VK_OEM_5 '\|' for US
// 0xDD - VK_OEM_6 ']}' for US
// 0xDE - VK_OEM_7 ''"' for US
// 0xDF - VK_OEM_8
// 0xE1 - no name
// 0xE2 - VK_OEM_102 '\_' for JIS
// 0xE3 - no name
// 0xE4 - no name
static const int8_t xlat[256] =
{
// 0 1 2 3 4 5 6 7 8 9 A B C D E F
//-----------------------------------------------------------------------
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10
0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, -1, -1, -1, -1, -1, -1, // 30
-1, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, // 40
26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, -1, -1, -1, -1, -1, // 50
37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, -1, 49, 50, 51, // 60
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 70
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 80
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 90
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // A0
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 52, 53, 54, 55, 56, 57, // B0
58, 59, 60, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // C0
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 61, 62, 63, 64, 65, // D0
-1, 66, 67, 68, 69, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // E0
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 // F0
};
return xlat[aVirtualKey];
}
int
KeyboardLayout::CompareDeadKeyEntries(const void* aArg1,
const void* aArg2,
void*)
{
const DeadKeyEntry* arg1 = static_cast<const DeadKeyEntry*>(aArg1);
const DeadKeyEntry* arg2 = static_cast<const DeadKeyEntry*>(aArg2);
return arg1->BaseChar - arg2->BaseChar;
}
const DeadKeyTable*
KeyboardLayout::AddDeadKeyTable(const DeadKeyEntry* aDeadKeyArray,
uint32_t aEntries)
{
DeadKeyTableListEntry* next = mDeadKeyTableListHead;
const size_t bytes = offsetof(DeadKeyTableListEntry, data) +
DeadKeyTable::SizeInBytes(aEntries);
uint8_t* p = new uint8_t[bytes];
mDeadKeyTableListHead = reinterpret_cast<DeadKeyTableListEntry*>(p);
mDeadKeyTableListHead->next = next;
DeadKeyTable* dkt =
reinterpret_cast<DeadKeyTable*>(mDeadKeyTableListHead->data);
dkt->Init(aDeadKeyArray, aEntries);
return dkt;
}
void
KeyboardLayout::ReleaseDeadKeyTables()
{
while (mDeadKeyTableListHead) {
uint8_t* p = reinterpret_cast<uint8_t*>(mDeadKeyTableListHead);
mDeadKeyTableListHead = mDeadKeyTableListHead->next;
delete [] p;
}
}
bool
KeyboardLayout::EnsureDeadKeyActive(bool aIsActive,
uint8_t aDeadKey,
const PBYTE aDeadKeyKbdState)
{
int32_t ret;
do {
char16_t dummyChars[5];
ret = ::ToUnicodeEx(aDeadKey, 0, (PBYTE)aDeadKeyKbdState,
(LPWSTR)dummyChars, ArrayLength(dummyChars), 0,
mKeyboardLayout);
// returned values:
// <0 - Dead key state is active. The keyboard driver will wait for next
// character.
// 1 - Previous pressed key was a valid base character that produced
// exactly one composite character.
// >1 - Previous pressed key does not produce any composite characters.
// Return dead-key character followed by base character(s).
} while ((ret < 0) != aIsActive);
return (ret < 0);
}
void
KeyboardLayout::DeactivateDeadKeyState()
{
if (mActiveDeadKey < 0) {
return;
}
BYTE kbdState[256];
memset(kbdState, 0, sizeof(kbdState));
VirtualKey::FillKbdState(kbdState, mDeadKeyShiftState);
EnsureDeadKeyActive(false, mActiveDeadKey, kbdState);
mActiveDeadKey = -1;
}
bool
KeyboardLayout::AddDeadKeyEntry(char16_t aBaseChar,
char16_t aCompositeChar,
DeadKeyEntry* aDeadKeyArray,
uint32_t aEntries)
{
for (uint32_t index = 0; index < aEntries; index++) {
if (aDeadKeyArray[index].BaseChar == aBaseChar) {
return false;
}
}
aDeadKeyArray[aEntries].BaseChar = aBaseChar;
aDeadKeyArray[aEntries].CompositeChar = aCompositeChar;
return true;
}
uint32_t
KeyboardLayout::GetDeadKeyCombinations(uint8_t aDeadKey,
const PBYTE aDeadKeyKbdState,
uint16_t aShiftStatesWithBaseChars,
DeadKeyEntry* aDeadKeyArray,
uint32_t aMaxEntries)
{
bool deadKeyActive = false;
uint32_t entries = 0;
BYTE kbdState[256];
memset(kbdState, 0, sizeof(kbdState));
for (uint32_t shiftState = 0; shiftState < 16; shiftState++) {
if (!(aShiftStatesWithBaseChars & (1 << shiftState))) {
continue;
}
VirtualKey::FillKbdState(kbdState, shiftState);
for (uint32_t virtualKey = 0; virtualKey < 256; virtualKey++) {
int32_t vki = GetKeyIndex(virtualKey);
// Dead-key can pair only with such key that produces exactly one base
// character.
if (vki >= 0 &&
mVirtualKeys[vki].GetNativeUniChars(shiftState).mLength == 1) {
// Ensure dead-key is in active state, when it swallows entered
// character and waits for the next pressed key.
if (!deadKeyActive) {
deadKeyActive = EnsureDeadKeyActive(true, aDeadKey,
aDeadKeyKbdState);
}
// Depending on the character the followed the dead-key, the keyboard
// driver can produce one composite character, or a dead-key character
// followed by a second character.
char16_t compositeChars[5];
int32_t ret =
::ToUnicodeEx(virtualKey, 0, kbdState, (LPWSTR)compositeChars,
ArrayLength(compositeChars), 0, mKeyboardLayout);
switch (ret) {
case 0:
// This key combination does not produce any characters. The
// dead-key is still in active state.
break;
case 1: {
// Exactly one composite character produced. Now, when dead-key
// is not active, repeat the last character one more time to
// determine the base character.
char16_t baseChars[5];
ret = ::ToUnicodeEx(virtualKey, 0, kbdState, (LPWSTR)baseChars,
ArrayLength(baseChars), 0, mKeyboardLayout);
NS_ASSERTION(ret == 1, "One base character expected");
if (ret == 1 && entries < aMaxEntries &&
AddDeadKeyEntry(baseChars[0], compositeChars[0],
aDeadKeyArray, entries)) {
entries++;
}
deadKeyActive = false;
break;
}
default:
// 1. Unexpected dead-key. Dead-key chaining is not supported.
// 2. More than one character generated. This is not a valid
// dead-key and base character combination.
deadKeyActive = false;
break;
}
}
}
}
if (deadKeyActive) {
deadKeyActive = EnsureDeadKeyActive(false, aDeadKey, aDeadKeyKbdState);
}
NS_QuickSort(aDeadKeyArray, entries, sizeof(DeadKeyEntry),
CompareDeadKeyEntries, nullptr);
return entries;
}
uint32_t
KeyboardLayout::ConvertNativeKeyCodeToDOMKeyCode(UINT aNativeKeyCode) const
{
// Alphabet or Numeric or Numpad or Function keys
if ((aNativeKeyCode >= 0x30 && aNativeKeyCode <= 0x39) ||
(aNativeKeyCode >= 0x41 && aNativeKeyCode <= 0x5A) ||
(aNativeKeyCode >= 0x60 && aNativeKeyCode <= 0x87)) {
return static_cast<uint32_t>(aNativeKeyCode);
}
switch (aNativeKeyCode) {
// Following keycodes are same as our DOM keycodes
case VK_CANCEL:
case VK_BACK:
case VK_TAB:
case VK_CLEAR:
case VK_RETURN:
case VK_SHIFT:
case VK_CONTROL:
case VK_MENU: // Alt
case VK_PAUSE:
case VK_CAPITAL: // CAPS LOCK
case VK_KANA: // same as VK_HANGUL
case VK_JUNJA:
case VK_FINAL:
case VK_HANJA: // same as VK_KANJI
case VK_ESCAPE:
case VK_CONVERT:
case VK_NONCONVERT:
case VK_ACCEPT:
case VK_MODECHANGE:
case VK_SPACE:
case VK_PRIOR: // PAGE UP
case VK_NEXT: // PAGE DOWN
case VK_END:
case VK_HOME:
case VK_LEFT:
case VK_UP:
case VK_RIGHT:
case VK_DOWN:
case VK_SELECT:
case VK_PRINT:
case VK_EXECUTE:
case VK_SNAPSHOT:
case VK_INSERT:
case VK_DELETE:
case VK_APPS: // Context Menu
case VK_SLEEP:
case VK_NUMLOCK:
case VK_SCROLL: // SCROLL LOCK
case VK_ATTN: // Attension key of IBM midrange computers, e.g., AS/400
case VK_CRSEL: // Cursor Selection
case VK_EXSEL: // Extend Selection
case VK_EREOF: // Erase EOF key of IBM 3270 keyboard layout
case VK_PLAY:
case VK_ZOOM:
case VK_PA1: // PA1 key of IBM 3270 keyboard layout
return uint32_t(aNativeKeyCode);
case VK_HELP:
return NS_VK_HELP;
// Windows key should be mapped to a Win keycode
// They should be able to be distinguished by DOM3 KeyboardEvent.location
case VK_LWIN:
case VK_RWIN:
return NS_VK_WIN;
case VK_VOLUME_MUTE:
return NS_VK_VOLUME_MUTE;
case VK_VOLUME_DOWN:
return NS_VK_VOLUME_DOWN;
case VK_VOLUME_UP:
return NS_VK_VOLUME_UP;
// Following keycodes are not defined in our DOM keycodes.
case VK_BROWSER_BACK:
case VK_BROWSER_FORWARD:
case VK_BROWSER_REFRESH:
case VK_BROWSER_STOP:
case VK_BROWSER_SEARCH:
case VK_BROWSER_FAVORITES:
case VK_BROWSER_HOME:
case VK_MEDIA_NEXT_TRACK:
case VK_MEDIA_STOP:
case VK_MEDIA_PLAY_PAUSE:
case VK_LAUNCH_MAIL:
case VK_LAUNCH_MEDIA_SELECT:
case VK_LAUNCH_APP1:
case VK_LAUNCH_APP2:
return 0;
// Following OEM specific virtual keycodes should pass through DOM keyCode
// for compatibility with the other browsers on Windows.
// Following OEM specific virtual keycodes are defined for Fujitsu/OASYS.
case VK_OEM_FJ_JISHO:
case VK_OEM_FJ_MASSHOU:
case VK_OEM_FJ_TOUROKU:
case VK_OEM_FJ_LOYA:
case VK_OEM_FJ_ROYA:
// Not sure what means "ICO".
case VK_ICO_HELP:
case VK_ICO_00:
case VK_ICO_CLEAR:
// Following OEM specific virtual keycodes are defined for Nokia/Ericsson.
case VK_OEM_RESET:
case VK_OEM_JUMP:
case VK_OEM_PA1:
case VK_OEM_PA2:
case VK_OEM_PA3:
case VK_OEM_WSCTRL:
case VK_OEM_CUSEL:
case VK_OEM_ATTN:
case VK_OEM_FINISH:
case VK_OEM_COPY:
case VK_OEM_AUTO:
case VK_OEM_ENLW:
case VK_OEM_BACKTAB:
// VK_OEM_CLEAR is defined as not OEM specific, but let's pass though
// DOM keyCode like other OEM specific virtual keycodes.
case VK_OEM_CLEAR:
return uint32_t(aNativeKeyCode);
// 0xE1 is an OEM specific virtual keycode. However, the value is already
// used in our DOM keyCode for AltGr on Linux. So, this virtual keycode
// cannot pass through DOM keyCode.
case 0xE1:
return 0;
// Following keycodes are OEM keys which are keycodes for non-alphabet and
// non-numeric keys, we should compute each keycode of them from unshifted
// character which is inputted by each key. But if the unshifted character
// is not an ASCII character but shifted character is an ASCII character,
// we should refer it.
case VK_OEM_1:
case VK_OEM_PLUS:
case VK_OEM_COMMA:
case VK_OEM_MINUS:
case VK_OEM_PERIOD:
case VK_OEM_2:
case VK_OEM_3:
case VK_OEM_4:
case VK_OEM_5:
case VK_OEM_6:
case VK_OEM_7:
case VK_OEM_8:
case VK_OEM_102:
case VK_ABNT_C1:
{
NS_ASSERTION(IsPrintableCharKey(aNativeKeyCode),
"The key must be printable");
ModifierKeyState modKeyState(0);
UniCharsAndModifiers uniChars =
GetUniCharsAndModifiers(aNativeKeyCode, modKeyState);
if (uniChars.mLength != 1 ||
uniChars.mChars[0] < ' ' || uniChars.mChars[0] > 0x7F) {
modKeyState.Set(MODIFIER_SHIFT);
uniChars = GetUniCharsAndModifiers(aNativeKeyCode, modKeyState);
if (uniChars.mLength != 1 ||
uniChars.mChars[0] < ' ' || uniChars.mChars[0] > 0x7F) {
return 0;
}
}
return WidgetUtils::ComputeKeyCodeFromChar(uniChars.mChars[0]);
}
// IE sets 0xC2 to the DOM keyCode for VK_ABNT_C2. However, we're already
// using NS_VK_SEPARATOR for the separator key on Mac and Linux. Therefore,
// We should keep consistency between Gecko on all platforms rather than
// with other browsers since a lot of keyCode values are already different
// between browsers.
case VK_ABNT_C2:
return NS_VK_SEPARATOR;
// VK_PROCESSKEY means IME already consumed the key event.
case VK_PROCESSKEY:
return 0;
// VK_PACKET is generated by SendInput() API, we don't need to
// care this message as key event.
case VK_PACKET:
return 0;
// If a key is not mapped to a virtual keycode, 0xFF is used.
case 0xFF:
NS_WARNING("The key is failed to be converted to a virtual keycode");
return 0;
}
#ifdef DEBUG
nsPrintfCString warning("Unknown virtual keycode (0x%08X), please check the "
"latest MSDN document, there may be some new "
"keycodes we've never known.",
aNativeKeyCode);
NS_WARNING(warning.get());
#endif
return 0;
}
KeyNameIndex
KeyboardLayout::ConvertNativeKeyCodeToKeyNameIndex(uint8_t aVirtualKey) const
{
if (IsPrintableCharKey(aVirtualKey)) {
return KEY_NAME_INDEX_USE_STRING;
}
#define NS_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, aKeyNameIndex)
#define NS_JAPANESE_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, aKeyNameIndex)
#define NS_KOREAN_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, aKeyNameIndex)
#define NS_OTHER_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, aKeyNameIndex)
switch (aVirtualKey) {
#undef NS_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX
#define NS_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, aKeyNameIndex) \
case aNativeKey: return aKeyNameIndex;
#include "NativeKeyToDOMKeyName.h"
#undef NS_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX
#define NS_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, aKeyNameIndex)
default:
break;
}
HKL layout = GetLayout();
WORD langID = LOWORD(static_cast<HKL>(layout));
WORD primaryLangID = PRIMARYLANGID(langID);
if (primaryLangID == LANG_JAPANESE) {
switch (aVirtualKey) {
#undef NS_JAPANESE_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX
#define NS_JAPANESE_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, aKeyNameIndex)\
case aNativeKey: return aKeyNameIndex;
#include "NativeKeyToDOMKeyName.h"
#undef NS_JAPANESE_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX
#define NS_JAPANESE_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, aKeyNameIndex)
default:
break;
}
} else if (primaryLangID == LANG_KOREAN) {
switch (aVirtualKey) {
#undef NS_KOREAN_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX
#define NS_KOREAN_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, aKeyNameIndex)\
case aNativeKey: return aKeyNameIndex;
#include "NativeKeyToDOMKeyName.h"
#undef NS_KOREAN_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX
#define NS_KOREAN_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, aKeyNameIndex)
default:
return KEY_NAME_INDEX_Unidentified;
}
}
switch (aVirtualKey) {
#undef NS_OTHER_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX
#define NS_OTHER_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, aKeyNameIndex)\
case aNativeKey: return aKeyNameIndex;
#include "NativeKeyToDOMKeyName.h"
#undef NS_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX
#undef NS_JAPANESE_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX
#undef NS_KOREAN_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX
#undef NS_OTHER_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX
default:
return KEY_NAME_INDEX_Unidentified;
}
}
// static
CodeNameIndex
KeyboardLayout::ConvertScanCodeToCodeNameIndex(UINT aScanCode)
{
switch (aScanCode) {
#define NS_NATIVE_KEY_TO_DOM_CODE_NAME_INDEX(aNativeKey, aCodeNameIndex) \
case aNativeKey: return aCodeNameIndex;
#include "NativeKeyToDOMCodeName.h"
#undef NS_NATIVE_KEY_TO_DOM_CODE_NAME_INDEX
default:
return CODE_NAME_INDEX_UNKNOWN;
}
}
nsresult
KeyboardLayout::SynthesizeNativeKeyEvent(nsWindowBase* aWidget,
int32_t aNativeKeyboardLayout,
int32_t aNativeKeyCode,
uint32_t aModifierFlags,
const nsAString& aCharacters,
const nsAString& aUnmodifiedCharacters)
{
UINT keyboardLayoutListCount = ::GetKeyboardLayoutList(0, nullptr);
NS_ASSERTION(keyboardLayoutListCount > 0,
"One keyboard layout must be installed at least");
HKL keyboardLayoutListBuff[50];
HKL* keyboardLayoutList =
keyboardLayoutListCount < 50 ? keyboardLayoutListBuff :
new HKL[keyboardLayoutListCount];
keyboardLayoutListCount =
::GetKeyboardLayoutList(keyboardLayoutListCount, keyboardLayoutList);
NS_ASSERTION(keyboardLayoutListCount > 0,
"Failed to get all keyboard layouts installed on the system");
nsPrintfCString layoutName("%08x", aNativeKeyboardLayout);
HKL loadedLayout = LoadKeyboardLayoutA(layoutName.get(), KLF_NOTELLSHELL);
if (loadedLayout == nullptr) {
if (keyboardLayoutListBuff != keyboardLayoutList) {
delete [] keyboardLayoutList;
}
return NS_ERROR_NOT_AVAILABLE;
}
// Setup clean key state and load desired layout
BYTE originalKbdState[256];
::GetKeyboardState(originalKbdState);
BYTE kbdState[256];
memset(kbdState, 0, sizeof(kbdState));
// This changes the state of the keyboard for the current thread only,
// and we'll restore it soon, so this should be OK.
::SetKeyboardState(kbdState);
OverrideLayout(loadedLayout);
uint8_t argumentKeySpecific = 0;
switch (aNativeKeyCode) {
case VK_SHIFT:
aModifierFlags &= ~(nsIWidget::SHIFT_L | nsIWidget::SHIFT_R);
argumentKeySpecific = VK_LSHIFT;
break;
case VK_LSHIFT:
aModifierFlags &= ~nsIWidget::SHIFT_L;
argumentKeySpecific = aNativeKeyCode;
aNativeKeyCode = VK_SHIFT;
break;
case VK_RSHIFT:
aModifierFlags &= ~nsIWidget::SHIFT_R;
argumentKeySpecific = aNativeKeyCode;
aNativeKeyCode = VK_SHIFT;
break;
case VK_CONTROL:
aModifierFlags &= ~(nsIWidget::CTRL_L | nsIWidget::CTRL_R);
argumentKeySpecific = VK_LCONTROL;
break;
case VK_LCONTROL:
aModifierFlags &= ~nsIWidget::CTRL_L;
argumentKeySpecific = aNativeKeyCode;
aNativeKeyCode = VK_CONTROL;
break;
case VK_RCONTROL:
aModifierFlags &= ~nsIWidget::CTRL_R;
argumentKeySpecific = aNativeKeyCode;
aNativeKeyCode = VK_CONTROL;
break;
case VK_MENU:
aModifierFlags &= ~(nsIWidget::ALT_L | nsIWidget::ALT_R);
argumentKeySpecific = VK_LMENU;
break;
case VK_LMENU:
aModifierFlags &= ~nsIWidget::ALT_L;
argumentKeySpecific = aNativeKeyCode;
aNativeKeyCode = VK_MENU;
break;
case VK_RMENU:
aModifierFlags &= ~nsIWidget::ALT_R;
argumentKeySpecific = aNativeKeyCode;
aNativeKeyCode = VK_MENU;
break;
case VK_CAPITAL:
aModifierFlags &= ~nsIWidget::CAPS_LOCK;
argumentKeySpecific = VK_CAPITAL;
break;
case VK_NUMLOCK:
aModifierFlags &= ~nsIWidget::NUM_LOCK;
argumentKeySpecific = VK_NUMLOCK;
break;
}
nsAutoTArray<KeyPair,10> keySequence;
WinUtils::SetupKeyModifiersSequence(&keySequence, aModifierFlags);
NS_ASSERTION(aNativeKeyCode >= 0 && aNativeKeyCode < 256,
"Native VK key code out of range");
keySequence.AppendElement(KeyPair(aNativeKeyCode, argumentKeySpecific));
// Simulate the pressing of each modifier key and then the real key
for (uint32_t i = 0; i < keySequence.Length(); ++i) {
uint8_t key = keySequence[i].mGeneral;
uint8_t keySpecific = keySequence[i].mSpecific;
kbdState[key] = 0x81; // key is down and toggled on if appropriate
if (keySpecific) {
kbdState[keySpecific] = 0x81;
}
::SetKeyboardState(kbdState);
ModifierKeyState modKeyState;
UINT scanCode =
ComputeScanCodeForVirtualKeyCode(keySpecific ? keySpecific : key);
LPARAM lParam = static_cast<LPARAM>(scanCode << 16);
// Add extended key flag to the lParam for right control key and right alt
// key.
if (keySpecific == VK_RCONTROL || keySpecific == VK_RMENU) {
lParam |= 0x1000000;
}
MSG keyDownMsg = WinUtils::InitMSG(WM_KEYDOWN, key, lParam,
aWidget->GetWindowHandle());
if (i == keySequence.Length() - 1) {
bool makeDeadCharMsg =
(IsDeadKey(key, modKeyState) && aCharacters.IsEmpty());
nsAutoString chars(aCharacters);
if (makeDeadCharMsg) {
UniCharsAndModifiers deadChars =
GetUniCharsAndModifiers(key, modKeyState);
chars = deadChars.ToString();
NS_ASSERTION(chars.Length() == 1,
"Dead char must be only one character");
}
if (chars.IsEmpty()) {
NativeKey nativeKey(aWidget, keyDownMsg, modKeyState);
nativeKey.HandleKeyDownMessage();
} else {
nsAutoTArray<NativeKey::FakeCharMsg, 10> fakeCharMsgs;
for (uint32_t j = 0; j < chars.Length(); j++) {
NativeKey::FakeCharMsg* fakeCharMsg = fakeCharMsgs.AppendElement();
fakeCharMsg->mCharCode = chars.CharAt(j);
fakeCharMsg->mScanCode = scanCode;
fakeCharMsg->mIsDeadKey = makeDeadCharMsg;
}
NativeKey nativeKey(aWidget, keyDownMsg, modKeyState, &fakeCharMsgs);
bool dispatched;
nativeKey.HandleKeyDownMessage(&dispatched);
// If some char messages are not consumed, let's emulate the widget
// receiving the message directly.
for (uint32_t j = 1; j < fakeCharMsgs.Length(); j++) {
if (fakeCharMsgs[j].mConsumed) {
continue;
}
MSG charMsg = fakeCharMsgs[j].GetCharMsg(aWidget->GetWindowHandle());
NativeKey nativeKey(aWidget, charMsg, modKeyState);
nativeKey.HandleCharMessage(charMsg);
}
}
} else {
NativeKey nativeKey(aWidget, keyDownMsg, modKeyState);
nativeKey.HandleKeyDownMessage();
}
}
for (uint32_t i = keySequence.Length(); i > 0; --i) {
uint8_t key = keySequence[i - 1].mGeneral;
uint8_t keySpecific = keySequence[i - 1].mSpecific;
kbdState[key] = 0; // key is up and toggled off if appropriate
if (keySpecific) {
kbdState[keySpecific] = 0;
}
::SetKeyboardState(kbdState);
ModifierKeyState modKeyState;
UINT scanCode =
ComputeScanCodeForVirtualKeyCode(keySpecific ? keySpecific : key);
LPARAM lParam = static_cast<LPARAM>(scanCode << 16);
// Add extended key flag to the lParam for right control key and right alt
// key.
if (keySpecific == VK_RCONTROL || keySpecific == VK_RMENU) {
lParam |= 0x1000000;
}
MSG keyUpMsg = WinUtils::InitMSG(WM_KEYUP, key, lParam,
aWidget->GetWindowHandle());
NativeKey nativeKey(aWidget, keyUpMsg, modKeyState);
nativeKey.HandleKeyUpMessage();
}
// Restore old key state and layout
::SetKeyboardState(originalKbdState);
RestoreLayout();
// Don't unload the layout if it's installed actually.
for (uint32_t i = 0; i < keyboardLayoutListCount; i++) {
if (keyboardLayoutList[i] == loadedLayout) {
loadedLayout = 0;
break;
}
}
if (keyboardLayoutListBuff != keyboardLayoutList) {
delete [] keyboardLayoutList;
}
if (loadedLayout) {
::UnloadKeyboardLayout(loadedLayout);
}
return NS_OK;
}
/*****************************************************************************
* mozilla::widget::DeadKeyTable
*****************************************************************************/
char16_t
DeadKeyTable::GetCompositeChar(char16_t aBaseChar) const
{
// Dead-key table is sorted by BaseChar in ascending order.
// Usually they are too small to use binary search.
for (uint32_t index = 0; index < mEntries; index++) {
if (mTable[index].BaseChar == aBaseChar) {
return mTable[index].CompositeChar;
}
if (mTable[index].BaseChar > aBaseChar) {
break;
}
}
return 0;
}
/*****************************************************************************
* mozilla::widget::RedirectedKeyDownMessage
*****************************************************************************/
MSG RedirectedKeyDownMessageManager::sRedirectedKeyDownMsg;
bool RedirectedKeyDownMessageManager::sDefaultPreventedOfRedirectedMsg = false;
// static
bool
RedirectedKeyDownMessageManager::IsRedirectedMessage(const MSG& aMsg)
{
return (aMsg.message == WM_KEYDOWN || aMsg.message == WM_SYSKEYDOWN) &&
(sRedirectedKeyDownMsg.message == aMsg.message &&
WinUtils::GetScanCode(sRedirectedKeyDownMsg.lParam) ==
WinUtils::GetScanCode(aMsg.lParam));
}
// static
void
RedirectedKeyDownMessageManager::RemoveNextCharMessage(HWND aWnd)
{
MSG msg;
if (WinUtils::PeekMessage(&msg, aWnd, WM_KEYFIRST, WM_KEYLAST,
PM_NOREMOVE | PM_NOYIELD) &&
(msg.message == WM_CHAR || msg.message == WM_SYSCHAR)) {
WinUtils::PeekMessage(&msg, aWnd, msg.message, msg.message,
PM_REMOVE | PM_NOYIELD);
}
}
} // namespace widget
} // namespace mozilla
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