diff options
Diffstat (limited to 'widget/windows/KeyboardLayout.cpp')
| -rw-r--r-- | widget/windows/KeyboardLayout.cpp | 5442 |
1 files changed, 5442 insertions, 0 deletions
diff --git a/widget/windows/KeyboardLayout.cpp b/widget/windows/KeyboardLayout.cpp new file mode 100644 index 0000000000..3b59aa9319 --- /dev/null +++ b/widget/windows/KeyboardLayout.cpp @@ -0,0 +1,5442 @@ +/* -*- 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 "mozilla/Logging.h" + +#include "mozilla/ArrayUtils.h" +#include "mozilla/AutoRestore.h" +#include "mozilla/MouseEvents.h" +#include "mozilla/MiscEvents.h" +#include "mozilla/StaticPrefs_ui.h" +#include "mozilla/TextEvents.h" +#include "mozilla/widget/WinRegistry.h" + +#include "nsExceptionHandler.h" +#include "nsGkAtoms.h" +#include "nsIUserIdleServiceInternal.h" +#include "nsIWindowsRegKey.h" +#include "nsPrintfCString.h" +#include "nsReadableUtils.h" +#include "nsServiceManagerUtils.h" +#include "nsTArray.h" +#include "nsUnicharUtils.h" +#include "nsWindowDbg.h" + +#include "KeyboardLayout.h" +#include "WidgetUtils.h" +#include "WinUtils.h" + +#include "npapi.h" + +#include <windows.h> +#include <winnls.h> +#include <winuser.h> +#include <algorithm> + +#ifndef WINABLEAPI +# include <winable.h> +#endif + +// For collecting other people's log, tell them `MOZ_LOG=KeyboardHandler:4,sync` +// rather than `MOZ_LOG=KeyboardHandler:5,sync` since using `5` may create too +// big file. +// Therefore you shouldn't use `LogLevel::Verbose` for logging usual behavior. +mozilla::LazyLogModule gKeyLog("KeyboardHandler"); + +namespace mozilla { +namespace widget { + +static const char* const 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"); + +static const char* GetBoolName(bool aBool) { return aBool ? "true" : "false"; } + +static const nsCString GetCharacterCodeName(WPARAM aCharCode) { + switch (aCharCode) { + case 0x0000: + return "NULL (0x0000)"_ns; + case 0x0008: + return "BACKSPACE (0x0008)"_ns; + case 0x0009: + return "CHARACTER TABULATION (0x0009)"_ns; + case 0x000A: + return "LINE FEED (0x000A)"_ns; + case 0x000B: + return "LINE TABULATION (0x000B)"_ns; + case 0x000C: + return "FORM FEED (0x000C)"_ns; + case 0x000D: + return "CARRIAGE RETURN (0x000D)"_ns; + case 0x0018: + return "CANCEL (0x0018)"_ns; + case 0x001B: + return "ESCAPE (0x001B)"_ns; + case 0x0020: + return "SPACE (0x0020)"_ns; + case 0x007F: + return "DELETE (0x007F)"_ns; + case 0x00A0: + return "NO-BREAK SPACE (0x00A0)"_ns; + case 0x00AD: + return "SOFT HYPHEN (0x00AD)"_ns; + case 0x2000: + return "EN QUAD (0x2000)"_ns; + case 0x2001: + return "EM QUAD (0x2001)"_ns; + case 0x2002: + return "EN SPACE (0x2002)"_ns; + case 0x2003: + return "EM SPACE (0x2003)"_ns; + case 0x2004: + return "THREE-PER-EM SPACE (0x2004)"_ns; + case 0x2005: + return "FOUR-PER-EM SPACE (0x2005)"_ns; + case 0x2006: + return "SIX-PER-EM SPACE (0x2006)"_ns; + case 0x2007: + return "FIGURE SPACE (0x2007)"_ns; + case 0x2008: + return "PUNCTUATION SPACE (0x2008)"_ns; + case 0x2009: + return "THIN SPACE (0x2009)"_ns; + case 0x200A: + return "HAIR SPACE (0x200A)"_ns; + case 0x200B: + return "ZERO WIDTH SPACE (0x200B)"_ns; + case 0x200C: + return "ZERO WIDTH NON-JOINER (0x200C)"_ns; + case 0x200D: + return "ZERO WIDTH JOINER (0x200D)"_ns; + case 0x200E: + return "LEFT-TO-RIGHT MARK (0x200E)"_ns; + case 0x200F: + return "RIGHT-TO-LEFT MARK (0x200F)"_ns; + case 0x2029: + return "PARAGRAPH SEPARATOR (0x2029)"_ns; + case 0x202A: + return "LEFT-TO-RIGHT EMBEDDING (0x202A)"_ns; + case 0x202B: + return "RIGHT-TO-LEFT EMBEDDING (0x202B)"_ns; + case 0x202D: + return "LEFT-TO-RIGHT OVERRIDE (0x202D)"_ns; + case 0x202E: + return "RIGHT-TO-LEFT OVERRIDE (0x202E)"_ns; + case 0x202F: + return "NARROW NO-BREAK SPACE (0x202F)"_ns; + case 0x205F: + return "MEDIUM MATHEMATICAL SPACE (0x205F)"_ns; + case 0x2060: + return "WORD JOINER (0x2060)"_ns; + case 0x2066: + return "LEFT-TO-RIGHT ISOLATE (0x2066)"_ns; + case 0x2067: + return "RIGHT-TO-LEFT ISOLATE (0x2067)"_ns; + case 0x3000: + return "IDEOGRAPHIC SPACE (0x3000)"_ns; + case 0xFEFF: + return "ZERO WIDTH NO-BREAK SPACE (0xFEFF)"_ns; + default: { + if (aCharCode < ' ' || (aCharCode >= 0x80 && aCharCode < 0xA0)) { + return nsPrintfCString("control (0x%04zX)", aCharCode); + } + if (NS_IS_HIGH_SURROGATE(aCharCode)) { + return nsPrintfCString("high surrogate (0x%04zX)", aCharCode); + } + if (NS_IS_LOW_SURROGATE(aCharCode)) { + return nsPrintfCString("low surrogate (0x%04zX)", aCharCode); + } + return IS_IN_BMP(aCharCode) + ? nsPrintfCString( + "'%s' (0x%04zX)", + NS_ConvertUTF16toUTF8(nsAutoString(aCharCode)).get(), + aCharCode) + : nsPrintfCString( + "'%s' (0x%08zX)", + NS_ConvertUTF16toUTF8(nsAutoString(aCharCode)).get(), + aCharCode); + } + } +} + +static const nsCString GetKeyLocationName(uint32_t aLocation) { + switch (aLocation) { + case eKeyLocationLeft: + return "KEY_LOCATION_LEFT"_ns; + case eKeyLocationRight: + return "KEY_LOCATION_RIGHT"_ns; + case eKeyLocationStandard: + return "KEY_LOCATION_STANDARD"_ns; + case eKeyLocationNumpad: + return "KEY_LOCATION_NUMPAD"_ns; + default: + return nsPrintfCString("Unknown (0x%04X)", aLocation); + } +} + +static const nsCString GetCharacterCodeNames(const char16_t* aChars, + uint32_t aLength) { + if (!aLength) { + return ""_ns; + } + nsCString result; + result.AssignLiteral("\""); + StringJoinAppend(result, ", "_ns, Span{aChars, aLength}, + [](nsACString& dest, const char16_t charValue) { + dest.Append(GetCharacterCodeName(charValue)); + }); + result.AppendLiteral("\""); + return result; +} + +static const nsCString GetCharacterCodeNames( + const UniCharsAndModifiers& aUniCharsAndModifiers) { + if (aUniCharsAndModifiers.IsEmpty()) { + return ""_ns; + } + nsCString result; + result.AssignLiteral("\""); + StringJoinAppend(result, ", "_ns, Span{aUniCharsAndModifiers.ToString()}, + [](nsACString& dest, const char16_t charValue) { + dest.Append(GetCharacterCodeName(charValue)); + }); + result.AppendLiteral("\""); + return result; +} + +class MOZ_STACK_CLASS GetShiftStateName final : public nsAutoCString { + public: + explicit GetShiftStateName(VirtualKey::ShiftState aShiftState) { + if (!aShiftState) { + AssignLiteral("none"); + return; + } + if (aShiftState & VirtualKey::STATE_SHIFT) { + AssignLiteral("Shift"); + aShiftState &= ~VirtualKey::STATE_SHIFT; + } + if (aShiftState & VirtualKey::STATE_CONTROL) { + MaybeAppendSeparator(); + AssignLiteral("Ctrl"); + aShiftState &= ~VirtualKey::STATE_CONTROL; + } + if (aShiftState & VirtualKey::STATE_ALT) { + MaybeAppendSeparator(); + AssignLiteral("Alt"); + aShiftState &= ~VirtualKey::STATE_ALT; + } + if (aShiftState & VirtualKey::STATE_CAPSLOCK) { + MaybeAppendSeparator(); + AssignLiteral("CapsLock"); + aShiftState &= ~VirtualKey::STATE_CAPSLOCK; + } + MOZ_ASSERT(!aShiftState); + } + + private: + void MaybeAppendSeparator() { + if (!IsEmpty()) { + AppendLiteral(" | "); + } + } +}; + +static const nsCString GetMessageName(UINT aMessage) { + switch (aMessage) { + case WM_NULL: + return "WM_NULL"_ns; + case WM_KEYDOWN: + return "WM_KEYDOWN"_ns; + case WM_KEYUP: + return "WM_KEYUP"_ns; + case WM_SYSKEYDOWN: + return "WM_SYSKEYDOWN"_ns; + case WM_SYSKEYUP: + return "WM_SYSKEYUP"_ns; + case WM_CHAR: + return "WM_CHAR"_ns; + case WM_UNICHAR: + return "WM_UNICHAR"_ns; + case WM_SYSCHAR: + return "WM_SYSCHAR"_ns; + case WM_DEADCHAR: + return "WM_DEADCHAR"_ns; + case WM_SYSDEADCHAR: + return "WM_SYSDEADCHAR"_ns; + case WM_APPCOMMAND: + return "WM_APPCOMMAND"_ns; + case WM_QUIT: + return "WM_QUIT"_ns; + default: + return nsPrintfCString("Unknown Message (0x%04X)", aMessage); + } +} + +static const nsCString GetVirtualKeyCodeName(WPARAM aVK) { + if (aVK >= ArrayLength(kVirtualKeyName)) { + return nsPrintfCString("Invalid (0x%08zX)", aVK); + } + return nsCString(kVirtualKeyName[aVK]); +} + +static const nsCString GetAppCommandName(WPARAM aCommand) { + switch (aCommand) { + case APPCOMMAND_BASS_BOOST: + return "APPCOMMAND_BASS_BOOST"_ns; + case APPCOMMAND_BASS_DOWN: + return "APPCOMMAND_BASS_DOWN"_ns; + case APPCOMMAND_BASS_UP: + return "APPCOMMAND_BASS_UP"_ns; + case APPCOMMAND_BROWSER_BACKWARD: + return "APPCOMMAND_BROWSER_BACKWARD"_ns; + case APPCOMMAND_BROWSER_FAVORITES: + return "APPCOMMAND_BROWSER_FAVORITES"_ns; + case APPCOMMAND_BROWSER_FORWARD: + return "APPCOMMAND_BROWSER_FORWARD"_ns; + case APPCOMMAND_BROWSER_HOME: + return "APPCOMMAND_BROWSER_HOME"_ns; + case APPCOMMAND_BROWSER_REFRESH: + return "APPCOMMAND_BROWSER_REFRESH"_ns; + case APPCOMMAND_BROWSER_SEARCH: + return "APPCOMMAND_BROWSER_SEARCH"_ns; + case APPCOMMAND_BROWSER_STOP: + return "APPCOMMAND_BROWSER_STOP"_ns; + case APPCOMMAND_CLOSE: + return "APPCOMMAND_CLOSE"_ns; + case APPCOMMAND_COPY: + return "APPCOMMAND_COPY"_ns; + case APPCOMMAND_CORRECTION_LIST: + return "APPCOMMAND_CORRECTION_LIST"_ns; + case APPCOMMAND_CUT: + return "APPCOMMAND_CUT"_ns; + case APPCOMMAND_DICTATE_OR_COMMAND_CONTROL_TOGGLE: + return "APPCOMMAND_DICTATE_OR_COMMAND_CONTROL_TOGGLE"_ns; + case APPCOMMAND_FIND: + return "APPCOMMAND_FIND"_ns; + case APPCOMMAND_FORWARD_MAIL: + return "APPCOMMAND_FORWARD_MAIL"_ns; + case APPCOMMAND_HELP: + return "APPCOMMAND_HELP"_ns; + case APPCOMMAND_LAUNCH_APP1: + return "APPCOMMAND_LAUNCH_APP1"_ns; + case APPCOMMAND_LAUNCH_APP2: + return "APPCOMMAND_LAUNCH_APP2"_ns; + case APPCOMMAND_LAUNCH_MAIL: + return "APPCOMMAND_LAUNCH_MAIL"_ns; + case APPCOMMAND_LAUNCH_MEDIA_SELECT: + return "APPCOMMAND_LAUNCH_MEDIA_SELECT"_ns; + case APPCOMMAND_MEDIA_CHANNEL_DOWN: + return "APPCOMMAND_MEDIA_CHANNEL_DOWN"_ns; + case APPCOMMAND_MEDIA_CHANNEL_UP: + return "APPCOMMAND_MEDIA_CHANNEL_UP"_ns; + case APPCOMMAND_MEDIA_FAST_FORWARD: + return "APPCOMMAND_MEDIA_FAST_FORWARD"_ns; + case APPCOMMAND_MEDIA_NEXTTRACK: + return "APPCOMMAND_MEDIA_NEXTTRACK"_ns; + case APPCOMMAND_MEDIA_PAUSE: + return "APPCOMMAND_MEDIA_PAUSE"_ns; + case APPCOMMAND_MEDIA_PLAY: + return "APPCOMMAND_MEDIA_PLAY"_ns; + case APPCOMMAND_MEDIA_PLAY_PAUSE: + return "APPCOMMAND_MEDIA_PLAY_PAUSE"_ns; + case APPCOMMAND_MEDIA_PREVIOUSTRACK: + return "APPCOMMAND_MEDIA_PREVIOUSTRACK"_ns; + case APPCOMMAND_MEDIA_RECORD: + return "APPCOMMAND_MEDIA_RECORD"_ns; + case APPCOMMAND_MEDIA_REWIND: + return "APPCOMMAND_MEDIA_REWIND"_ns; + case APPCOMMAND_MEDIA_STOP: + return "APPCOMMAND_MEDIA_STOP"_ns; + case APPCOMMAND_MIC_ON_OFF_TOGGLE: + return "APPCOMMAND_MIC_ON_OFF_TOGGLE"_ns; + case APPCOMMAND_MICROPHONE_VOLUME_DOWN: + return "APPCOMMAND_MICROPHONE_VOLUME_DOWN"_ns; + case APPCOMMAND_MICROPHONE_VOLUME_MUTE: + return "APPCOMMAND_MICROPHONE_VOLUME_MUTE"_ns; + case APPCOMMAND_MICROPHONE_VOLUME_UP: + return "APPCOMMAND_MICROPHONE_VOLUME_UP"_ns; + case APPCOMMAND_NEW: + return "APPCOMMAND_NEW"_ns; + case APPCOMMAND_OPEN: + return "APPCOMMAND_OPEN"_ns; + case APPCOMMAND_PASTE: + return "APPCOMMAND_PASTE"_ns; + case APPCOMMAND_PRINT: + return "APPCOMMAND_PRINT"_ns; + case APPCOMMAND_REDO: + return "APPCOMMAND_REDO"_ns; + case APPCOMMAND_REPLY_TO_MAIL: + return "APPCOMMAND_REPLY_TO_MAIL"_ns; + case APPCOMMAND_SAVE: + return "APPCOMMAND_SAVE"_ns; + case APPCOMMAND_SEND_MAIL: + return "APPCOMMAND_SEND_MAIL"_ns; + case APPCOMMAND_SPELL_CHECK: + return "APPCOMMAND_SPELL_CHECK"_ns; + case APPCOMMAND_TREBLE_DOWN: + return "APPCOMMAND_TREBLE_DOWN"_ns; + case APPCOMMAND_TREBLE_UP: + return "APPCOMMAND_TREBLE_UP"_ns; + case APPCOMMAND_UNDO: + return "APPCOMMAND_UNDO"_ns; + case APPCOMMAND_VOLUME_DOWN: + return "APPCOMMAND_VOLUME_DOWN"_ns; + case APPCOMMAND_VOLUME_MUTE: + return "APPCOMMAND_VOLUME_MUTE"_ns; + case APPCOMMAND_VOLUME_UP: + return "APPCOMMAND_VOLUME_UP"_ns; + default: + return nsPrintfCString("Unknown app command (0x%08zX)", aCommand); + } +} + +static const nsCString GetAppCommandDeviceName(LPARAM aDevice) { + switch (aDevice) { + case FAPPCOMMAND_KEY: + return "FAPPCOMMAND_KEY"_ns; + case FAPPCOMMAND_MOUSE: + return "FAPPCOMMAND_MOUSE"_ns; + case FAPPCOMMAND_OEM: + return "FAPPCOMMAND_OEM"_ns; + default: + return nsPrintfCString("Unknown app command device (0x%04" PRIXLPTR ")", + aDevice); + } +}; + +class MOZ_STACK_CLASS GetAppCommandKeysName final : public nsAutoCString { + public: + explicit GetAppCommandKeysName(WPARAM aKeys) { + if (aKeys & MK_CONTROL) { + AppendLiteral("MK_CONTROL"); + aKeys &= ~MK_CONTROL; + } + if (aKeys & MK_LBUTTON) { + MaybeAppendSeparator(); + AppendLiteral("MK_LBUTTON"); + aKeys &= ~MK_LBUTTON; + } + if (aKeys & MK_MBUTTON) { + MaybeAppendSeparator(); + AppendLiteral("MK_MBUTTON"); + aKeys &= ~MK_MBUTTON; + } + if (aKeys & MK_RBUTTON) { + MaybeAppendSeparator(); + AppendLiteral("MK_RBUTTON"); + aKeys &= ~MK_RBUTTON; + } + if (aKeys & MK_SHIFT) { + MaybeAppendSeparator(); + AppendLiteral("MK_SHIFT"); + aKeys &= ~MK_SHIFT; + } + if (aKeys & MK_XBUTTON1) { + MaybeAppendSeparator(); + AppendLiteral("MK_XBUTTON1"); + aKeys &= ~MK_XBUTTON1; + } + if (aKeys & MK_XBUTTON2) { + MaybeAppendSeparator(); + AppendLiteral("MK_XBUTTON2"); + aKeys &= ~MK_XBUTTON2; + } + if (aKeys) { + MaybeAppendSeparator(); + AppendPrintf("Unknown Flags (0x%04zX)", aKeys); + } + if (IsEmpty()) { + AssignLiteral("none (0x0000)"); + } + } + + private: + void MaybeAppendSeparator() { + if (!IsEmpty()) { + AppendLiteral(" | "); + } + } +}; + +static const nsCString ToString(const MSG& aMSG) { + nsCString result; + result.AssignLiteral("{ message="); + result.Append(GetMessageName(aMSG.message).get()); + result.AppendLiteral(", "); + switch (aMSG.message) { + case WM_KEYDOWN: + case WM_KEYUP: + case WM_SYSKEYDOWN: + case WM_SYSKEYUP: + result.AppendPrintf( + "virtual keycode=%s, repeat count=%" PRIdLPTR + ", " + "scancode=0x%02X, extended key=%s, " + "context code=%s, previous key state=%s, " + "transition state=%s", + GetVirtualKeyCodeName(aMSG.wParam).get(), aMSG.lParam & 0xFFFF, + WinUtils::GetScanCode(aMSG.lParam), + GetBoolName(WinUtils::IsExtendedScanCode(aMSG.lParam)), + GetBoolName((aMSG.lParam & (1 << 29)) != 0), + GetBoolName((aMSG.lParam & (1 << 30)) != 0), + GetBoolName((aMSG.lParam & (1 << 31)) != 0)); + break; + case WM_CHAR: + case WM_DEADCHAR: + case WM_SYSCHAR: + case WM_SYSDEADCHAR: + result.AppendPrintf( + "character code=%s, repeat count=%" PRIdLPTR + ", " + "scancode=0x%02X, extended key=%s, " + "context code=%s, previous key state=%s, " + "transition state=%s", + GetCharacterCodeName(aMSG.wParam).get(), aMSG.lParam & 0xFFFF, + WinUtils::GetScanCode(aMSG.lParam), + GetBoolName(WinUtils::IsExtendedScanCode(aMSG.lParam)), + GetBoolName((aMSG.lParam & (1 << 29)) != 0), + GetBoolName((aMSG.lParam & (1 << 30)) != 0), + GetBoolName((aMSG.lParam & (1 << 31)) != 0)); + break; + case WM_APPCOMMAND: + result.AppendPrintf( + "window handle=0x%zx, app command=%s, device=%s, dwKeys=%s", + aMSG.wParam, + GetAppCommandName(GET_APPCOMMAND_LPARAM(aMSG.lParam)).get(), + GetAppCommandDeviceName(GET_DEVICE_LPARAM(aMSG.lParam)).get(), + GetAppCommandKeysName(GET_KEYSTATE_LPARAM(aMSG.lParam)).get()); + break; + default: + result.AppendPrintf("wParam=%zu, lParam=%" PRIdLPTR, aMSG.wParam, + aMSG.lParam); + break; + } + result.AppendPrintf(", hwnd=0x%p", aMSG.hwnd); + return result; +} + +static const nsCString ToString( + const UniCharsAndModifiers& aUniCharsAndModifiers) { + if (aUniCharsAndModifiers.IsEmpty()) { + return "{}"_ns; + } + nsCString result; + result.AssignLiteral("{ "); + result.Append(GetCharacterCodeName(aUniCharsAndModifiers.CharAt(0))); + for (size_t i = 1; i < aUniCharsAndModifiers.Length(); ++i) { + if (aUniCharsAndModifiers.ModifiersAt(i - 1) != + aUniCharsAndModifiers.ModifiersAt(i)) { + result.AppendLiteral(" ["); + result.Append(GetModifiersName(aUniCharsAndModifiers.ModifiersAt(0))); + result.AppendLiteral("]"); + } + result.AppendLiteral(", "); + result.Append(GetCharacterCodeName(aUniCharsAndModifiers.CharAt(i))); + } + result.AppendLiteral(" ["); + uint32_t lastIndex = aUniCharsAndModifiers.Length() - 1; + result.Append(GetModifiersName(aUniCharsAndModifiers.ModifiersAt(lastIndex))); + result.AppendLiteral("] }"); + return result; +} + +const nsCString ToString(const ModifierKeyState& aModifierKeyState) { + nsCString result; + result.AssignLiteral("{ "); + result.Append(GetModifiersName(aModifierKeyState.GetModifiers()).get()); + result.AppendLiteral(" }"); + return result; +} + +// 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; + +/***************************************************************************** + * mozilla::widget::ModifierKeyState + *****************************************************************************/ + +ModifierKeyState::ModifierKeyState() { Update(); } + +ModifierKeyState::ModifierKeyState(Modifiers aModifiers) + : mModifiers(aModifiers) { + MOZ_ASSERT(!(mModifiers & MODIFIER_ALTGRAPH) || (!IsControl() && !IsAlt()), + "Neither MODIFIER_CONTROL nor MODIFIER_ALT should be set " + "if MODIFIER_ALTGRAPH is set"); +} + +void ModifierKeyState::Update() { + mModifiers = 0; + if (IS_VK_DOWN(VK_SHIFT)) { + mModifiers |= MODIFIER_SHIFT; + } + // If AltGr key (i.e., VK_RMENU on some keyboard layout) is pressed, only + // MODIFIER_ALTGRAPH should be set. Otherwise, i.e., if both Ctrl and Alt + // keys are pressed to emulate AltGr key, MODIFIER_CONTROL and MODIFIER_ALT + // keys should be set separately. + if (IS_VK_DOWN(VK_RMENU) && KeyboardLayout::GetInstance()->HasAltGr()) { + mModifiers |= MODIFIER_ALTGRAPH; + } else { + 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_META; + } + if (::GetKeyState(VK_CAPITAL) & 1) { + mModifiers |= MODIFIER_CAPSLOCK; + } + if (::GetKeyState(VK_NUMLOCK) & 1) { + mModifiers |= MODIFIER_NUMLOCK; + } + if (::GetKeyState(VK_SCROLL) & 1) { + mModifiers |= MODIFIER_SCROLLLOCK; + } +} + +void ModifierKeyState::Unset(Modifiers aRemovingModifiers) { + mModifiers &= ~aRemovingModifiers; +} + +void ModifierKeyState::Set(Modifiers aAddingModifiers) { + mModifiers |= aAddingModifiers; + MOZ_ASSERT(!(mModifiers & MODIFIER_ALTGRAPH) || (!IsControl() && !IsAlt()), + "Neither MODIFIER_CONTROL nor MODIFIER_ALT should be set " + "if MODIFIER_ALTGRAPH is set"); +} + +void ModifierKeyState::InitInputEvent(WidgetInputEvent& aInputEvent) const { + aInputEvent.mModifiers = 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"); + + WidgetMouseEventBase& mouseEvent = *aMouseEvent.AsMouseEventBase(); + mouseEvent.mButtons = 0; + if (::GetKeyState(VK_LBUTTON) < 0) { + mouseEvent.mButtons |= MouseButtonsFlag::ePrimaryFlag; + } + if (::GetKeyState(VK_RBUTTON) < 0) { + mouseEvent.mButtons |= MouseButtonsFlag::eSecondaryFlag; + } + if (::GetKeyState(VK_MBUTTON) < 0) { + mouseEvent.mButtons |= MouseButtonsFlag::eMiddleFlag; + } + if (::GetKeyState(VK_XBUTTON1) < 0) { + mouseEvent.mButtons |= MouseButtonsFlag::e4thFlag; + } + if (::GetKeyState(VK_XBUTTON2) < 0) { + mouseEvent.mButtons |= MouseButtonsFlag::e5thFlag; + } +} + +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::IsWin() const { + return (mModifiers & MODIFIER_META) != 0; +} + +bool ModifierKeyState::MaybeMatchShortcutKey() const { + // If Windows key is pressed, even if both Ctrl key and Alt key are pressed, + // it's possible to match a shortcut key. + if (IsWin()) { + return true; + } + // Otherwise, when both Ctrl key and Alt key are pressed, it shouldn't be + // a shortcut key for Windows since it means pressing AltGr key on + // some keyboard layouts. + if (IsControl() ^ IsAlt()) { + return true; + } + // If no modifier key is active except a lockable modifier nor Shift key, + // the key shouldn't match any shortcut keys (there are Space and + // Shift+Space, though, let's ignore these special case...). + return false; +} + +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; +} + +/***************************************************************************** + * mozilla::widget::UniCharsAndModifiers + *****************************************************************************/ + +void UniCharsAndModifiers::Append(char16_t aUniChar, Modifiers aModifiers) { + mChars.Append(aUniChar); + mModifiers.AppendElement(aModifiers); +} + +void UniCharsAndModifiers::FillModifiers(Modifiers aModifiers) { + for (size_t i = 0; i < Length(); i++) { + mModifiers[i] = aModifiers; + } +} + +void UniCharsAndModifiers::OverwriteModifiersIfBeginsWith( + const UniCharsAndModifiers& aOther) { + if (!BeginsWith(aOther)) { + return; + } + for (size_t i = 0; i < aOther.Length(); ++i) { + mModifiers[i] = aOther.mModifiers[i]; + } +} + +bool UniCharsAndModifiers::UniCharsEqual( + const UniCharsAndModifiers& aOther) const { + return mChars.Equals(aOther.mChars); +} + +bool UniCharsAndModifiers::UniCharsCaseInsensitiveEqual( + const UniCharsAndModifiers& aOther) const { + return mChars.Equals(aOther.mChars, nsCaseInsensitiveStringComparator); +} + +bool UniCharsAndModifiers::BeginsWith( + const UniCharsAndModifiers& aOther) const { + return StringBeginsWith(mChars, aOther.mChars); +} + +UniCharsAndModifiers& UniCharsAndModifiers::operator+=( + const UniCharsAndModifiers& aOther) { + mChars.Append(aOther.mChars); + mModifiers.AppendElements(aOther.mModifiers); + 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_ALTGRAPH) { + state |= STATE_ALTGRAPH; + } else { + 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_ALTGRAPH) { + modifiers |= MODIFIER_ALTGRAPH; + } else { + if (aShiftState & STATE_CONTROL) { + modifiers |= MODIFIER_CONTROL; + } + if (aShiftState & STATE_ALT) { + modifiers |= MODIFIER_ALT; + } + } + if (aShiftState & STATE_CAPSLOCK) { + modifiers |= MODIFIER_CAPSLOCK; + } + return modifiers; +} + +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) { + MOZ_ASSERT(aShiftState == ToShiftStateIndex(aShiftState)); + + 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) { + MOZ_ASSERT(aShiftState == ToShiftStateIndex(aShiftState)); + + SetDeadKey(aShiftState, true); + + mShiftStates[aShiftState].DeadKey.DeadChar = aDeadChar; + mShiftStates[aShiftState].DeadKey.Table = nullptr; +} + +UniCharsAndModifiers VirtualKey::GetUniChars(ShiftState aShiftState) const { + UniCharsAndModifiers result = GetNativeUniChars(aShiftState); + + const uint8_t kShiftStateIndex = ToShiftStateIndex(aShiftState); + if (!(kShiftStateIndex & STATE_CONTROL_ALT)) { + // If neither Alt nor Ctrl key is pressed, just return stored data + // for the key. + return result; + } + + if (result.IsEmpty()) { + // If Alt and/or Control are pressed and the key produces no + // character, return characters which is produced by the key without + // Alt and Control, and return given modifiers as is. + result = GetNativeUniChars(kShiftStateIndex & ~STATE_CONTROL_ALT); + result.FillModifiers(ShiftStateToModifiers(aShiftState)); + return result; + } + + if (IsAltGrIndex(kShiftStateIndex)) { + // If AltGr or both Ctrl and Alt are pressed and the key produces + // character(s), we need to clear MODIFIER_ALT and MODIFIER_CONTROL + // since TextEditor won't handle eKeyPress event whose mModifiers + // has MODIFIER_ALT or MODIFIER_CONTROL. Additionally, we need to + // use MODIFIER_ALTGRAPH when a key produces character(s) with + // AltGr or both Ctrl and Alt on Windows. See following spec issue: + // <https://github.com/w3c/uievents/issues/147> + Modifiers finalModifiers = ShiftStateToModifiers(aShiftState); + finalModifiers &= ~(MODIFIER_ALT | MODIFIER_CONTROL); + finalModifiers |= MODIFIER_ALTGRAPH; + result.FillModifiers(finalModifiers); + return result; + } + + // Otherwise, i.e., Alt or Ctrl is pressed and it produces character(s), + // check if different character(s) is produced by the key without Alt/Ctrl. + // If it produces different character, we need to consume the Alt and + // Ctrl modifier for TextEditor. Otherwise, the key does not produces the + // character actually. So, keep setting Alt and Ctrl modifiers. + UniCharsAndModifiers unmodifiedReslt = + GetNativeUniChars(kShiftStateIndex & ~STATE_CONTROL_ALT); + if (!result.UniCharsEqual(unmodifiedReslt)) { + Modifiers finalModifiers = ShiftStateToModifiers(aShiftState); + finalModifiers &= ~(MODIFIER_ALT | MODIFIER_CONTROL); + result.FillModifiers(finalModifiers); + } + return result; +} + +UniCharsAndModifiers VirtualKey::GetNativeUniChars( + ShiftState aShiftState) const { + const uint8_t kShiftStateIndex = ToShiftStateIndex(aShiftState); + UniCharsAndModifiers result; + Modifiers modifiers = ShiftStateToModifiers(aShiftState); + if (IsDeadKey(aShiftState)) { + result.Append(mShiftStates[kShiftStateIndex].DeadKey.DeadChar, modifiers); + return result; + } + + uint32_t len = ArrayLength(mShiftStates[kShiftStateIndex].Normal.Chars); + for (uint32_t i = 0; + i < len && mShiftStates[kShiftStateIndex].Normal.Chars[i]; i++) { + result.Append(mShiftStates[kShiftStateIndex].Normal.Chars[i], modifiers); + } + return result; +} + +// static +void VirtualKey::FillKbdState(PBYTE aKbdState, const ShiftState aShiftState) { + if (aShiftState & STATE_SHIFT) { + aKbdState[VK_SHIFT] |= 0x80; + } else { + aKbdState[VK_SHIFT] &= ~0x80; + aKbdState[VK_LSHIFT] &= ~0x80; + aKbdState[VK_RSHIFT] &= ~0x80; + } + + if (aShiftState & STATE_ALTGRAPH) { + aKbdState[VK_CONTROL] |= 0x80; + aKbdState[VK_LCONTROL] |= 0x80; + aKbdState[VK_RCONTROL] &= ~0x80; + aKbdState[VK_MENU] |= 0x80; + aKbdState[VK_LMENU] &= ~0x80; + aKbdState[VK_RMENU] |= 0x80; + } else { + 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 + *****************************************************************************/ + +uint8_t NativeKey::sDispatchedKeyOfAppCommand = 0; +NativeKey* NativeKey::sLatestInstance = nullptr; +const MSG NativeKey::sEmptyMSG = {}; +MSG NativeKey::sLastKeyOrCharMSG = {}; +MSG NativeKey::sLastKeyMSG = {}; +char16_t NativeKey::sPendingHighSurrogate = 0; + +NativeKey::NativeKey(nsWindow* aWidget, const MSG& aMessage, + const ModifierKeyState& aModKeyState, + HKL aOverrideKeyboardLayout, + nsTArray<FakeCharMsg>* aFakeCharMsgs) + : mLastInstance(sLatestInstance), + mRemovingMsg(sEmptyMSG), + mReceivedMsg(sEmptyMSG), + mWidget(aWidget), + mDispatcher(aWidget->GetTextEventDispatcher()), + mMsg(aMessage), + mFocusedWndBeforeDispatch(::GetFocus()), + mDOMKeyCode(0), + mKeyNameIndex(KEY_NAME_INDEX_Unidentified), + mCodeNameIndex(CODE_NAME_INDEX_UNKNOWN), + mModKeyState(aModKeyState), + mVirtualKeyCode(0), + mOriginalVirtualKeyCode(0), + mShiftedLatinChar(0), + mUnshiftedLatinChar(0), + mScanCode(0), + mIsExtended(false), + mIsRepeat(false), + mIsDeadKey(false), + mIsPrintableKey(false), + mIsSkippableInRemoteProcess(false), + mCharMessageHasGone(false), + mCanIgnoreModifierStateAtKeyPress(true), + mFakeCharMsgs(aFakeCharMsgs && aFakeCharMsgs->Length() ? aFakeCharMsgs + : nullptr) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::NativeKey(aWidget=0x%p { GetWindowHandle()=0x%p }, " + "aMessage=%s, aModKeyState=%s), sLatestInstance=0x%p", + this, aWidget, aWidget->GetWindowHandle(), ToString(aMessage).get(), + ToString(aModKeyState).get(), sLatestInstance)); + + MOZ_ASSERT(aWidget); + MOZ_ASSERT(mDispatcher); + sLatestInstance = this; + KeyboardLayout* keyboardLayout = KeyboardLayout::GetInstance(); + mKeyboardLayout = KeyboardLayout::GetLayout(); + if (aOverrideKeyboardLayout && mKeyboardLayout != aOverrideKeyboardLayout) { + keyboardLayout->OverrideLayout(aOverrideKeyboardLayout); + mKeyboardLayout = keyboardLayout->GetLoadedLayout(); + MOZ_ASSERT(mKeyboardLayout == aOverrideKeyboardLayout); + mIsOverridingKeyboardLayout = true; + } else { + mIsOverridingKeyboardLayout = false; + sLastKeyOrCharMSG = aMessage; + } + + if (mMsg.message == WM_APPCOMMAND) { + InitWithAppCommand(); + } else { + InitWithKeyOrChar(); + } + + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::NativeKey(), mKeyboardLayout=0x%p, " + "mFocusedWndBeforeDispatch=0x%p, mDOMKeyCode=%s, " + "mKeyNameIndex=%s, mCodeNameIndex=%s, mModKeyState=%s, " + "mVirtualKeyCode=%s, mOriginalVirtualKeyCode=%s, " + "mCommittedCharsAndModifiers=%s, mInputtingStringAndModifiers=%s, " + "mShiftedString=%s, mUnshiftedString=%s, mShiftedLatinChar=%s, " + "mUnshiftedLatinChar=%s, mScanCode=0x%04X, mIsExtended=%s, " + "mIsRepeat=%s, mIsDeadKey=%s, mIsPrintableKey=%s, " + "mIsSkippableInRemoteProcess=%s, mCharMessageHasGone=%s, " + "mIsOverridingKeyboardLayout=%s", + this, mKeyboardLayout, mFocusedWndBeforeDispatch, + GetDOMKeyCodeName(mDOMKeyCode).get(), ToString(mKeyNameIndex).get(), + ToString(mCodeNameIndex).get(), ToString(mModKeyState).get(), + GetVirtualKeyCodeName(mVirtualKeyCode).get(), + GetVirtualKeyCodeName(mOriginalVirtualKeyCode).get(), + ToString(mCommittedCharsAndModifiers).get(), + ToString(mInputtingStringAndModifiers).get(), + ToString(mShiftedString).get(), ToString(mUnshiftedString).get(), + GetCharacterCodeName(mShiftedLatinChar).get(), + GetCharacterCodeName(mUnshiftedLatinChar).get(), mScanCode, + GetBoolName(mIsExtended), GetBoolName(mIsRepeat), + GetBoolName(mIsDeadKey), GetBoolName(mIsPrintableKey), + GetBoolName(mIsSkippableInRemoteProcess), + GetBoolName(mCharMessageHasGone), + GetBoolName(mIsOverridingKeyboardLayout))); +} + +void NativeKey::InitIsSkippableForKeyOrChar(const MSG& aLastKeyMSG) { + mIsSkippableInRemoteProcess = false; + + if (!mIsRepeat) { + // If the message is not repeated key message, the event should be always + // handled in remote process even if it's too old. + return; + } + + // Keyboard utilities may send us some generated messages and such messages + // may be marked as "repeated", e.g., SendInput() calls with + // KEYEVENTF_UNICODE but without KEYEVENTF_KEYUP. However, key sequence + // comes from such utilities may be really important. For example, utilities + // may send WM_KEYDOWN for VK_BACK to remove previous character and send + // WM_KEYDOWN for VK_PACKET to insert a composite character. Therefore, we + // should check if current message and previous key message are caused by + // same physical key. If not, the message may be generated by such + // utility. + // XXX With this approach, if VK_BACK messages are generated with known + // scancode, we cannot distinguish whether coming VK_BACK message is + // actually repeated by the auto-repeat feature. Currently, we need + // this hack only for "SinhalaTamil IME" and fortunately, it generates + // VK_BACK messages with odd scancode. So, we don't need to handle + // VK_BACK specially at least for now. + + if (mCodeNameIndex == CODE_NAME_INDEX_UNKNOWN) { + // If current event is not caused by physical key operation, it may be + // caused by a keyboard utility. If so, the event shouldn't be ignored by + // BrowserChild since it want to insert the character, delete a character or + // move caret. + return; + } + + if (mOriginalVirtualKeyCode == VK_PACKET) { + // If the message is VK_PACKET, that means that a keyboard utility + // tries to insert a character. + return; + } + + switch (mMsg.message) { + case WM_KEYDOWN: + case WM_SYSKEYDOWN: + case WM_CHAR: + case WM_SYSCHAR: + case WM_DEADCHAR: + case WM_SYSDEADCHAR: + // However, some keyboard layouts may send some keyboard messages with + // activating the bit. If we dispatch repeated keyboard events, they + // may be ignored by BrowserChild due to performance reason. So, we need + // to check if actually a physical key is repeated by the auto-repeat + // feature. + switch (aLastKeyMSG.message) { + case WM_KEYDOWN: + case WM_SYSKEYDOWN: + if (aLastKeyMSG.wParam == VK_PACKET) { + // If the last message was VK_PACKET, that means that a keyboard + // utility tried to insert a character. So, current message is + // not repeated key event of the previous event. + return; + } + // Let's check whether current message and previous message are + // caused by same physical key. + mIsSkippableInRemoteProcess = + mScanCode == WinUtils::GetScanCode(aLastKeyMSG.lParam) && + mIsExtended == WinUtils::IsExtendedScanCode(aLastKeyMSG.lParam); + return; + default: + // If previous message is not a keydown, this must not be generated + // by the auto-repeat feature. + return; + } + case WM_APPCOMMAND: + MOZ_ASSERT_UNREACHABLE( + "WM_APPCOMMAND should be handled in " + "InitWithAppCommand()"); + return; + default: + // keyup message shouldn't be repeated by the auto-repeat feature. + return; + } +} + +void NativeKey::InitWithKeyOrChar() { + MSG lastKeyMSG = sLastKeyMSG; + char16_t pendingHighSurrogate = sPendingHighSurrogate; + mScanCode = WinUtils::GetScanCode(mMsg.lParam); + mIsExtended = WinUtils::IsExtendedScanCode(mMsg.lParam); + switch (mMsg.message) { + case WM_KEYDOWN: + case WM_SYSKEYDOWN: + sPendingHighSurrogate = 0; + [[fallthrough]]; + case WM_KEYUP: + case WM_SYSKEYUP: { + // Modify sLastKeyMSG now since retrieving following char messages may + // cause sending another key message if odd tool hooks GetMessage(), + // PeekMessage(). + sLastKeyMSG = mMsg; + + // Note that we don't need to compute raw virtual keycode here even when + // it's VK_PROCESS (i.e., already handled by IME) because we need to + // export it as DOM_VK_PROCESS and KEY_NAME_INDEX_Process. + mOriginalVirtualKeyCode = static_cast<uint8_t>(mMsg.wParam); + + // 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 && mOriginalVirtualKeyCode != VK_PACKET) { + 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); + } + } + + // 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; + } + + 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 an extended key, + // let's use VK_LSHIFT for unknown mapping. + mVirtualKeyCode = VK_LSHIFT; + } + break; + default: + MOZ_CRASH("Unsupported mOriginalVirtualKeyCode"); + } + break; + } + case WM_CHAR: + case WM_UNICHAR: + case WM_SYSCHAR: + sPendingHighSurrogate = 0; + // If there is another instance and it is trying to remove a char message + // from the queue, this message should be handled in the old instance. + if (IsAnotherInstanceRemovingCharMessage()) { + // XXX Do we need to make mReceivedMsg an array? + MOZ_ASSERT(IsEmptyMSG(mLastInstance->mReceivedMsg)); + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::InitWithKeyOrChar(), WARNING, detecting another " + "instance is trying to remove a char message, so, this instance " + "should do nothing, mLastInstance=0x%p, mRemovingMsg=%s, " + "mReceivedMsg=%s", + this, mLastInstance, ToString(mLastInstance->mRemovingMsg).get(), + ToString(mLastInstance->mReceivedMsg).get())); + mLastInstance->mReceivedMsg = mMsg; + return; + } + + // 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. + + mVirtualKeyCode = mOriginalVirtualKeyCode = + ComputeVirtualKeyCodeFromScanCodeEx(); + NS_ASSERTION(mVirtualKeyCode, "Failed to compute virtual keycode"); + break; + default: { + MOZ_CRASH_UNSAFE_PRINTF("Unsupported message: 0x%04X", mMsg.message); + break; + } + } + + if (!mVirtualKeyCode) { + mVirtualKeyCode = mOriginalVirtualKeyCode; + } + + KeyboardLayout* keyboardLayout = KeyboardLayout::GetInstance(); + mDOMKeyCode = + keyboardLayout->ConvertNativeKeyCodeToDOMKeyCode(mVirtualKeyCode); + // Be aware, keyboard utilities can change non-printable keys to printable + // keys. In such case, we should make the key value as a printable key. + // FYI: IsFollowedByPrintableCharMessage() returns true only when it's + // handling a keydown message. + mKeyNameIndex = + IsFollowedByPrintableCharMessage() + ? KEY_NAME_INDEX_USE_STRING + : keyboardLayout->ConvertNativeKeyCodeToKeyNameIndex(mVirtualKeyCode); + mCodeNameIndex = KeyboardLayout::ConvertScanCodeToCodeNameIndex( + GetScanCodeWithExtendedFlag()); + + // If next message of WM_(SYS)KEYDOWN is WM_*CHAR message and the key + // combination is not reserved by the system, let's consume it now. + // TODO: We cannot initialize mCommittedCharsAndModifiers for VK_PACKET + // if the message is WM_KEYUP because we don't have preceding + // WM_CHAR message. + // TODO: Like Edge, we shouldn't dispatch two sets of keyboard events + // for a Unicode character in non-BMP because its key value looks + // broken and not good thing for our editor if only one keydown or + // keypress event's default is prevented. I guess, we should store + // key message information globally and we should wait following + // WM_KEYDOWN if following WM_CHAR is a part of a Unicode character. + if ((mMsg.message == WM_KEYDOWN || mMsg.message == WM_SYSKEYDOWN) && + !IsReservedBySystem()) { + MSG charMsg; + while (GetFollowingCharMessage(charMsg)) { + // Although, got message shouldn't be WM_NULL in desktop apps, + // we should keep checking this. FYI: This was added for Metrofox. + if (charMsg.message == WM_NULL) { + continue; + } + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::InitWithKeyOrChar(), removed char message, %s", + this, ToString(charMsg).get())); + Unused << NS_WARN_IF(charMsg.hwnd != mMsg.hwnd); + mFollowingCharMsgs.AppendElement(charMsg); + } + if (mFollowingCharMsgs.Length() == 1) { + // If we receive a keydown message for a high-surrogate, a low-surrogate + // keydown message **will** and should follow it. We cannot translate the + // following WM_KEYDOWN message for the low-surrogate right now since + // it's not yet queued into the message queue yet. Therefore, we need to + // wait next one to dispatch keypress event with setting its `.key` value + // to a surrogate pair rather than setting it to a lone surrogate. + // FYI: This may happen with typing a non-BMP character on the touch + // keyboard on Windows 10 or later except when an IME is installed. (If + // IME is installed, composition is used instead.) + if (IS_HIGH_SURROGATE(mFollowingCharMsgs[0].wParam)) { + if (pendingHighSurrogate) { + MOZ_LOG(gKeyLog, LogLevel::Warning, + ("%p NativeKey::InitWithKeyOrChar(), there is pending " + "high surrogate input, but received another high surrogate " + "input. The previous one is discarded", + this)); + } + sPendingHighSurrogate = mFollowingCharMsgs[0].wParam; + mFollowingCharMsgs.Clear(); + } else if (IS_LOW_SURROGATE(mFollowingCharMsgs[0].wParam)) { + // If we stopped dispathing a keypress event for a preceding + // high-surrogate, treat this keydown (for a low-surrogate) as + // introducing both the high surrogate and the low surrogate. + if (pendingHighSurrogate) { + MSG charMsg = mFollowingCharMsgs[0]; + mFollowingCharMsgs[0].wParam = pendingHighSurrogate; + mFollowingCharMsgs.AppendElement(std::move(charMsg)); + } else { + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::InitWithKeyOrChar(), there is no pending high " + "surrogate input, but received lone low surrogate input", + this)); + } + } else { + MOZ_LOG(gKeyLog, LogLevel::Warning, + ("%p NativeKey::InitWithKeyOrChar(), there is pending " + "high surrogate input, but received non-surrogate input. " + "The high surrogate input is discarded", + this)); + } + } else if (!mFollowingCharMsgs.IsEmpty()) { + MOZ_LOG(gKeyLog, LogLevel::Warning, + ("%p NativeKey::InitWithKeyOrChar(), there is pending " + "high surrogate input, but received 2 or more character input. " + "The high surrogate input is discarded", + this)); + } + } + + keyboardLayout->InitNativeKey(*this); + + // Now, we can know if the key produces character(s) or a dead key with + // AltGraph modifier. When user emulates AltGr key press with pressing + // both Ctrl and Alt and the key produces character(s) or a dead key, we + // need to replace Control and Alt state with AltGraph if the keyboard + // layout has AltGr key. + // Note that if Ctrl and/or Alt are pressed (not to emulate to press AltGr), + // we need to set actual modifiers to eKeyDown and eKeyUp. + if (MaybeEmulatingAltGraph() && + (mCommittedCharsAndModifiers.IsProducingCharsWithAltGr() || + mKeyNameIndex == KEY_NAME_INDEX_Dead)) { + mModKeyState.Unset(MODIFIER_CONTROL | MODIFIER_ALT); + mModKeyState.Set(MODIFIER_ALTGRAPH); + } + + mIsDeadKey = + (IsFollowedByDeadCharMessage() || + keyboardLayout->IsDeadKey(mOriginalVirtualKeyCode, mModKeyState)); + mIsPrintableKey = mKeyNameIndex == KEY_NAME_INDEX_USE_STRING || + KeyboardLayout::IsPrintableCharKey(mOriginalVirtualKeyCode); + // The repeat count in mMsg.lParam isn't useful to check whether the event + // is caused by the auto-repeat feature because it's not incremented even + // if it's repeated twice or more (i.e., always 1). Therefore, we need to + // check previous key state (31th bit) instead. If it's 1, the key was down + // before the message was sent. + mIsRepeat = (mMsg.lParam & (1 << 30)) != 0; + InitIsSkippableForKeyOrChar(lastKeyMSG); + + if (IsKeyDownMessage()) { + // Compute some strings which may be inputted by the key with various + // modifier state if this key event won't cause text input actually. + // They will be used for setting mAlternativeCharCodes in the callback + // method which will be called by TextEventDispatcher. + if (!IsFollowedByPrintableCharMessage()) { + ComputeInputtingStringWithKeyboardLayout(); + } + // Remove odd char messages if there are. + RemoveFollowingOddCharMessages(); + } +} + +void NativeKey::InitCommittedCharsAndModifiersWithFollowingCharMessages() { + mCommittedCharsAndModifiers.Clear(); + // This should cause inputting text in focused editor. However, it + // ignores keypress events whose altKey or ctrlKey is true. + // Therefore, we need to remove these modifier state here. + Modifiers modifiers = mModKeyState.GetModifiers(); + if (IsFollowedByPrintableCharMessage()) { + modifiers &= ~(MODIFIER_ALT | MODIFIER_CONTROL); + if (MaybeEmulatingAltGraph()) { + modifiers |= MODIFIER_ALTGRAPH; + } + } + // NOTE: This method assumes that WM_CHAR and WM_SYSCHAR are never retrieved + // at same time. + for (size_t i = 0; i < mFollowingCharMsgs.Length(); ++i) { + // Ignore non-printable char messages. + if (!IsPrintableCharOrSysCharMessage(mFollowingCharMsgs[i])) { + continue; + } + char16_t ch = static_cast<char16_t>(mFollowingCharMsgs[i].wParam); + mCommittedCharsAndModifiers.Append(ch, modifiers); + } +} + +NativeKey::~NativeKey() { + MOZ_LOG(gKeyLog, LogLevel::Debug, + ("%p NativeKey::~NativeKey(), destroyed", this)); + if (mIsOverridingKeyboardLayout) { + KeyboardLayout* keyboardLayout = KeyboardLayout::GetInstance(); + keyboardLayout->RestoreLayout(); + } + sLatestInstance = mLastInstance; +} + +void NativeKey::InitWithAppCommand() { + if (GET_DEVICE_LPARAM(mMsg.lParam) != FAPPCOMMAND_KEY) { + return; + } + + uint32_t appCommand = GET_APPCOMMAND_LPARAM(mMsg.lParam); + switch (GET_APPCOMMAND_LPARAM(mMsg.lParam)) { +#undef NS_APPCOMMAND_TO_DOM_KEY_NAME_INDEX +#define NS_APPCOMMAND_TO_DOM_KEY_NAME_INDEX(aAppCommand, aKeyNameIndex) \ + case aAppCommand: \ + mKeyNameIndex = aKeyNameIndex; \ + break; + +#include "NativeKeyToDOMKeyName.h" + +#undef NS_APPCOMMAND_TO_DOM_KEY_NAME_INDEX + + default: + mKeyNameIndex = KEY_NAME_INDEX_Unidentified; + } + + // Guess the virtual keycode which caused this message. + switch (appCommand) { + case APPCOMMAND_BROWSER_BACKWARD: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_BROWSER_BACK; + break; + case APPCOMMAND_BROWSER_FORWARD: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_BROWSER_FORWARD; + break; + case APPCOMMAND_BROWSER_REFRESH: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_BROWSER_REFRESH; + break; + case APPCOMMAND_BROWSER_STOP: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_BROWSER_STOP; + break; + case APPCOMMAND_BROWSER_SEARCH: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_BROWSER_SEARCH; + break; + case APPCOMMAND_BROWSER_FAVORITES: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_BROWSER_FAVORITES; + break; + case APPCOMMAND_BROWSER_HOME: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_BROWSER_HOME; + break; + case APPCOMMAND_VOLUME_MUTE: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_VOLUME_MUTE; + break; + case APPCOMMAND_VOLUME_DOWN: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_VOLUME_DOWN; + break; + case APPCOMMAND_VOLUME_UP: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_VOLUME_UP; + break; + case APPCOMMAND_MEDIA_NEXTTRACK: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_MEDIA_NEXT_TRACK; + break; + case APPCOMMAND_MEDIA_PREVIOUSTRACK: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_MEDIA_PREV_TRACK; + break; + case APPCOMMAND_MEDIA_STOP: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_MEDIA_STOP; + break; + case APPCOMMAND_MEDIA_PLAY_PAUSE: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_MEDIA_PLAY_PAUSE; + break; + case APPCOMMAND_LAUNCH_MAIL: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_LAUNCH_MAIL; + break; + case APPCOMMAND_LAUNCH_MEDIA_SELECT: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_LAUNCH_MEDIA_SELECT; + break; + case APPCOMMAND_LAUNCH_APP1: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_LAUNCH_APP1; + break; + case APPCOMMAND_LAUNCH_APP2: + mVirtualKeyCode = mOriginalVirtualKeyCode = VK_LAUNCH_APP2; + break; + default: + return; + } + + uint16_t scanCodeEx = ComputeScanCodeExFromVirtualKeyCode(mVirtualKeyCode); + mScanCode = static_cast<uint8_t>(scanCodeEx & 0xFF); + uint8_t extended = static_cast<uint8_t>((scanCodeEx & 0xFF00) >> 8); + mIsExtended = (extended == 0xE0) || (extended == 0xE1); + mDOMKeyCode = KeyboardLayout::GetInstance()->ConvertNativeKeyCodeToDOMKeyCode( + mOriginalVirtualKeyCode); + mCodeNameIndex = KeyboardLayout::ConvertScanCodeToCodeNameIndex( + GetScanCodeWithExtendedFlag()); + // If we can map the WM_APPCOMMAND to a virtual keycode, we can trust + // the result of GetKeyboardState(). Otherwise, we dispatch both + // keydown and keyup events from WM_APPCOMMAND handler. Therefore, + // even if WM_APPCOMMAND is caused by auto key repeat, web apps receive + // a pair of DOM keydown and keyup events. I.e., KeyboardEvent.repeat + // should be never true of such keys. + // XXX Isn't the key state always true? If the key press caused this + // WM_APPCOMMAND, that means it's pressed at that time. + if (mVirtualKeyCode) { + BYTE kbdState[256]; + memset(kbdState, 0, sizeof(kbdState)); + ::GetKeyboardState(kbdState); + mIsSkippableInRemoteProcess = mIsRepeat = !!kbdState[mVirtualKeyCode]; + } +} + +bool NativeKey::MaybeEmulatingAltGraph() const { + return IsControl() && IsAlt() && KeyboardLayout::GetInstance()->HasAltGr(); +} + +// static +bool NativeKey::IsControlChar(char16_t aChar) { + static const char16_t U_SPACE = 0x20; + static const char16_t U_DELETE = 0x7F; + return aChar < U_SPACE || aChar == U_DELETE; +} + +bool NativeKey::IsFollowedByDeadCharMessage() const { + if (mFollowingCharMsgs.IsEmpty()) { + return false; + } + return IsDeadCharMessage(mFollowingCharMsgs[0]); +} + +bool NativeKey::IsFollowedByPrintableCharMessage() const { + for (size_t i = 0; i < mFollowingCharMsgs.Length(); ++i) { + if (IsPrintableCharMessage(mFollowingCharMsgs[i])) { + return true; + } + } + return false; +} + +bool NativeKey::IsFollowedByPrintableCharOrSysCharMessage() const { + for (size_t i = 0; i < mFollowingCharMsgs.Length(); ++i) { + if (IsPrintableCharOrSysCharMessage(mFollowingCharMsgs[i])) { + return true; + } + } + return false; +} + +bool NativeKey::IsReservedBySystem() const { + // Alt+Space key is handled by OS, we shouldn't touch it. + if (mModKeyState.IsAlt() && !mModKeyState.IsControl() && + mVirtualKeyCode == VK_SPACE) { + return true; + } + + // XXX How about Alt+F4? We receive WM_SYSKEYDOWN for F4 before closing the + // window. Although, we don't prevent to close the window but the key + // event shouldn't be exposed to the web. + + return false; +} + +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; +} + +void NativeKey::RemoveFollowingOddCharMessages() { + MOZ_ASSERT(IsKeyDownMessage()); + + // If the keydown message is synthesized for automated tests, there is + // nothing to do here. + if (mFakeCharMsgs) { + return; + } + + // If there are some following char messages before another key message, + // there is nothing to do here. + if (!mFollowingCharMsgs.IsEmpty()) { + return; + } + + // If the handling key isn't Backspace, there is nothing to do here. + if (mOriginalVirtualKeyCode != VK_BACK) { + return; + } + + // If we don't see the odd message pattern, there is nothing to do here. + if (!IsIMEDoingKakuteiUndo()) { + return; + } + + // Otherwise, we need to remove odd WM_CHAR messages for ATOK or WXG (both + // of them are Japanese IME). + MSG msg; + 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_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::RemoveFollowingOddCharMessages(), removed odd char " + "message, %s", + this, ToString(msg).get())); + mRemovedOddCharMsgs.AppendElement(msg); + } +} + +UINT NativeKey::GetScanCodeWithExtendedFlag() const { + if (!mIsExtended) { + 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 eKeyLocationLeft; + + case VK_RSHIFT: + case VK_RCONTROL: + case VK_RMENU: + case VK_RWIN: + return eKeyLocationRight; + + case VK_RETURN: + // XXX This code assumes that all keyboard drivers use same mapping. + return !mIsExtended ? eKeyLocationStandard : eKeyLocationNumpad; + + 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 ? eKeyLocationStandard : eKeyLocationNumpad; + + // 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 eKeyLocationNumpad; + + case VK_SHIFT: + case VK_CONTROL: + case VK_MENU: + NS_WARNING("Failed to decide the key location?"); + [[fallthrough]]; + + default: + return eKeyLocationStandard; + } +} + +uint8_t NativeKey::ComputeVirtualKeyCodeFromScanCode() const { + return static_cast<uint8_t>( + ::MapVirtualKeyEx(mScanCode, MAPVK_VSC_TO_VK, mKeyboardLayout)); +} + +uint8_t NativeKey::ComputeVirtualKeyCodeFromScanCodeEx() 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. + 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, MAPVK_VK_TO_VSC_EX, mKeyboardLayout)); +} + +char16_t NativeKey::ComputeUnicharFromScanCode() const { + return static_cast<char16_t>(::MapVirtualKeyEx( + ComputeVirtualKeyCodeFromScanCode(), MAPVK_VK_TO_CHAR, mKeyboardLayout)); +} + +nsEventStatus NativeKey::InitKeyEvent(WidgetKeyboardEvent& aKeyEvent) const { + return InitKeyEvent(aKeyEvent, mModKeyState); +} + +nsEventStatus NativeKey::InitKeyEvent( + WidgetKeyboardEvent& aKeyEvent, + const ModifierKeyState& aModKeyState) const { + if (mWidget->Destroyed()) { + MOZ_CRASH("NativeKey tries to dispatch a key event on destroyed widget"); + } + + LayoutDeviceIntPoint point(0, 0); + mWidget->InitEvent(aKeyEvent, &point); + + switch (aKeyEvent.mMessage) { + case eKeyDown: + // If it was followed by a char message but it was consumed by somebody, + // we should mark it as consumed because somebody must have handled it + // and we should prevent to do "double action" for the key operation. + // However, for compatibility with older version and other browsers, + // we should dispatch the events even in the web content. + if (mCharMessageHasGone) { + aKeyEvent.PreventDefaultBeforeDispatch(CrossProcessForwarding::eAllow); + } + aKeyEvent.mKeyCode = mDOMKeyCode; + // Unique id for this keydown event and its associated keypress. + sUniqueKeyEventId++; + aKeyEvent.mUniqueId = sUniqueKeyEventId; + break; + case eKeyUp: + aKeyEvent.mKeyCode = 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. On the other hand, we should dispatch the events even + // in the web content for compatibility with older version and other + // browsers. + if (mOriginalVirtualKeyCode == VK_MENU && mMsg.message != WM_SYSKEYUP) { + aKeyEvent.PreventDefaultBeforeDispatch(CrossProcessForwarding::eAllow); + } + break; + case eKeyPress: + MOZ_ASSERT(!mCharMessageHasGone, + "If following char message was consumed by somebody, " + "keydown event should be consumed above"); + aKeyEvent.mUniqueId = sUniqueKeyEventId; + break; + default: + MOZ_CRASH("Invalid event message"); + } + + aKeyEvent.mIsRepeat = mIsRepeat; + aKeyEvent.mMaybeSkippableInRemoteProcess = mIsSkippableInRemoteProcess; + 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.mLocation = GetKeyLocation(); + aModKeyState.InitInputEvent(aKeyEvent); + + KeyboardLayout::NotifyIdleServiceOfUserActivity(); + + MOZ_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::InitKeyEvent(), initialized, aKeyEvent={ " + "mMessage=%s, mKeyNameIndex=%s, mKeyValue=\"%s\", mCodeNameIndex=%s, " + "mKeyCode=%s, mLocation=%s, mModifiers=%s, DefaultPrevented()=%s }", + this, ToChar(aKeyEvent.mMessage), + ToString(aKeyEvent.mKeyNameIndex).get(), + NS_ConvertUTF16toUTF8(aKeyEvent.mKeyValue).get(), + ToString(aKeyEvent.mCodeNameIndex).get(), + GetDOMKeyCodeName(aKeyEvent.mKeyCode).get(), + GetKeyLocationName(aKeyEvent.mLocation).get(), + GetModifiersName(aKeyEvent.mModifiers).get(), + GetBoolName(aKeyEvent.DefaultPrevented()))); + + return aKeyEvent.DefaultPrevented() ? nsEventStatus_eConsumeNoDefault + : nsEventStatus_eIgnore; +} + +bool NativeKey::DispatchCommandEvent(uint32_t aEventCommand) const { + RefPtr<nsAtom> command; + switch (aEventCommand) { + case APPCOMMAND_BROWSER_BACKWARD: + command = nsGkAtoms::Back; + break; + case APPCOMMAND_BROWSER_FORWARD: + command = nsGkAtoms::Forward; + break; + case APPCOMMAND_BROWSER_REFRESH: + command = nsGkAtoms::Reload; + break; + case APPCOMMAND_BROWSER_STOP: + command = nsGkAtoms::Stop; + break; + case APPCOMMAND_BROWSER_SEARCH: + command = nsGkAtoms::Search; + break; + case APPCOMMAND_BROWSER_FAVORITES: + command = nsGkAtoms::Bookmarks; + break; + case APPCOMMAND_BROWSER_HOME: + command = nsGkAtoms::Home; + break; + case APPCOMMAND_CLOSE: + command = nsGkAtoms::Close; + break; + case APPCOMMAND_FIND: + command = nsGkAtoms::Find; + break; + case APPCOMMAND_HELP: + command = nsGkAtoms::Help; + break; + case APPCOMMAND_NEW: + command = nsGkAtoms::New; + break; + case APPCOMMAND_OPEN: + command = nsGkAtoms::Open; + break; + case APPCOMMAND_PRINT: + command = nsGkAtoms::Print; + break; + case APPCOMMAND_SAVE: + command = nsGkAtoms::Save; + break; + case APPCOMMAND_FORWARD_MAIL: + command = nsGkAtoms::ForwardMail; + break; + case APPCOMMAND_REPLY_TO_MAIL: + command = nsGkAtoms::ReplyToMail; + break; + case APPCOMMAND_SEND_MAIL: + command = nsGkAtoms::SendMail; + break; + case APPCOMMAND_MEDIA_NEXTTRACK: + command = nsGkAtoms::NextTrack; + break; + case APPCOMMAND_MEDIA_PREVIOUSTRACK: + command = nsGkAtoms::PreviousTrack; + break; + case APPCOMMAND_MEDIA_STOP: + command = nsGkAtoms::MediaStop; + break; + case APPCOMMAND_MEDIA_PLAY_PAUSE: + command = nsGkAtoms::PlayPause; + break; + default: + MOZ_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::DispatchCommandEvent(), doesn't dispatch command " + "event", + this)); + return false; + } + WidgetCommandEvent appCommandEvent(true, command, mWidget); + + mWidget->InitEvent(appCommandEvent); + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::DispatchCommandEvent(), dispatching " + "%s app command event...", + this, nsAtomCString(command).get())); + bool ok = + mWidget->DispatchWindowEvent(appCommandEvent) || mWidget->Destroyed(); + MOZ_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::DispatchCommandEvent(), dispatched app command event, " + "result=%s, mWidget->Destroyed()=%s", + this, GetBoolName(ok), GetBoolName(mWidget->Destroyed()))); + return ok; +} + +bool NativeKey::HandleAppCommandMessage() const { + // If the widget has gone, we should do nothing. + if (mWidget->Destroyed()) { + MOZ_LOG(gKeyLog, LogLevel::Warning, + ("%p NativeKey::HandleAppCommandMessage(), WARNING, not handled " + "due to " + "destroyed the widget", + this)); + return false; + } + + // NOTE: Typical behavior of WM_APPCOMMAND caused by key is, WM_APPCOMMAND + // message is _sent_ first. Then, the DefaultWndProc will _post_ + // WM_KEYDOWN message and WM_KEYUP message if the keycode for the + // command is available (i.e., mVirtualKeyCode is not 0). + + // NOTE: IntelliType (Microsoft's keyboard utility software) always consumes + // WM_KEYDOWN and WM_KEYUP. + + // Let's dispatch keydown message before our chrome handles the command + // when the message is caused by a keypress. This behavior makes handling + // WM_APPCOMMAND be a default action of the keydown event. This means that + // web applications can handle multimedia keys and prevent our default action. + // This allow web applications to provide better UX for multimedia keyboard + // users. + bool dispatchKeyEvent = (GET_DEVICE_LPARAM(mMsg.lParam) == FAPPCOMMAND_KEY); + if (dispatchKeyEvent) { + // If a plug-in window has focus but it didn't consume the message, our + // window receive WM_APPCOMMAND message. In this case, we shouldn't + // dispatch KeyboardEvents because an event handler may access the + // plug-in process synchronously. + dispatchKeyEvent = + WinUtils::IsOurProcessWindow(reinterpret_cast<HWND>(mMsg.wParam)); + } + + bool consumed = false; + + if (dispatchKeyEvent) { + nsresult rv = mDispatcher->BeginNativeInputTransaction(); + if (NS_WARN_IF(NS_FAILED(rv))) { + MOZ_LOG(gKeyLog, LogLevel::Error, + ("%p NativeKey::HandleAppCommandMessage(), FAILED due to " + "BeginNativeInputTransaction() failure", + this)); + return true; + } + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleAppCommandMessage(), initializing keydown " + "event...", + this)); + WidgetKeyboardEvent keydownEvent(true, eKeyDown, mWidget); + nsEventStatus status = InitKeyEvent(keydownEvent, mModKeyState); + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleAppCommandMessage(), tries to dispatch " + "keydown event...", + this)); + // NOTE: If the keydown event is consumed by web contents, we shouldn't + // continue to handle the command. + if (!mDispatcher->DispatchKeyboardEvent(eKeyDown, keydownEvent, status, + const_cast<NativeKey*>(this))) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleAppCommandMessage(), keydown event isn't " + "dispatched", + this)); + // If keyboard event wasn't fired, there must be composition. + // So, we don't need to dispatch a command event. + return true; + } + consumed = status == nsEventStatus_eConsumeNoDefault; + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleAppCommandMessage(), keydown event was " + "dispatched, consumed=%s", + this, GetBoolName(consumed))); + sDispatchedKeyOfAppCommand = mVirtualKeyCode; + if (mWidget->Destroyed()) { + MOZ_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleAppCommandMessage(), keydown event caused " + "destroying the widget", + this)); + return true; + } + } + + // Dispatch a command event or a content command event if the command is + // supported. + if (!consumed) { + uint32_t appCommand = GET_APPCOMMAND_LPARAM(mMsg.lParam); + EventMessage contentCommandMessage = eVoidEvent; + switch (appCommand) { + case APPCOMMAND_BROWSER_BACKWARD: + case APPCOMMAND_BROWSER_FORWARD: + case APPCOMMAND_BROWSER_REFRESH: + case APPCOMMAND_BROWSER_STOP: + case APPCOMMAND_BROWSER_SEARCH: + case APPCOMMAND_BROWSER_FAVORITES: + case APPCOMMAND_BROWSER_HOME: + case APPCOMMAND_CLOSE: + case APPCOMMAND_FIND: + case APPCOMMAND_HELP: + case APPCOMMAND_NEW: + case APPCOMMAND_OPEN: + case APPCOMMAND_PRINT: + case APPCOMMAND_SAVE: + case APPCOMMAND_FORWARD_MAIL: + case APPCOMMAND_REPLY_TO_MAIL: + case APPCOMMAND_SEND_MAIL: + case APPCOMMAND_MEDIA_NEXTTRACK: + case APPCOMMAND_MEDIA_PREVIOUSTRACK: + case APPCOMMAND_MEDIA_STOP: + case APPCOMMAND_MEDIA_PLAY_PAUSE: + // We shouldn't consume the message always because if we don't handle + // the message, the sender (typically, utility of keyboard or mouse) + // may send other key messages which indicate well known shortcut key. + consumed = DispatchCommandEvent(appCommand); + break; + + // Use content command for following commands: + case APPCOMMAND_COPY: + contentCommandMessage = eContentCommandCopy; + break; + case APPCOMMAND_CUT: + contentCommandMessage = eContentCommandCut; + break; + case APPCOMMAND_PASTE: + contentCommandMessage = eContentCommandPaste; + break; + case APPCOMMAND_REDO: + contentCommandMessage = eContentCommandRedo; + break; + case APPCOMMAND_UNDO: + contentCommandMessage = eContentCommandUndo; + break; + } + + if (contentCommandMessage) { + MOZ_ASSERT(!mWidget->Destroyed()); + WidgetContentCommandEvent contentCommandEvent(true, contentCommandMessage, + mWidget); + MOZ_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleAppCommandMessage(), dispatching %s event...", + this, ToChar(contentCommandMessage))); + mWidget->DispatchWindowEvent(contentCommandEvent); + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleAppCommandMessage(), dispatched %s event", + this, ToChar(contentCommandMessage))); + consumed = true; + + if (mWidget->Destroyed()) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleAppCommandMessage(), %s event caused " + "destroying the widget", + this, ToChar(contentCommandMessage))); + return true; + } + } else { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleAppCommandMessage(), doesn't dispatch " + "content " + "command event", + this)); + } + } + + // Dispatch a keyup event if the command is caused by pressing a key and + // the key isn't mapped to a virtual keycode. + if (dispatchKeyEvent && !mVirtualKeyCode) { + MOZ_ASSERT(!mWidget->Destroyed()); + nsresult rv = mDispatcher->BeginNativeInputTransaction(); + if (NS_WARN_IF(NS_FAILED(rv))) { + MOZ_LOG(gKeyLog, LogLevel::Error, + ("%p NativeKey::HandleAppCommandMessage(), FAILED due to " + "BeginNativeInputTransaction() failure", + this)); + return true; + } + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleAppCommandMessage(), initializing keyup " + "event...", + this)); + WidgetKeyboardEvent keyupEvent(true, eKeyUp, mWidget); + nsEventStatus status = InitKeyEvent(keyupEvent, mModKeyState); + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleAppCommandMessage(), dispatching keyup " + "event...", + this)); + // NOTE: Ignore if the keyup event is consumed because keyup event + // represents just a physical key event state change. + mDispatcher->DispatchKeyboardEvent(eKeyUp, keyupEvent, status, + const_cast<NativeKey*>(this)); + MOZ_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleAppCommandMessage(), dispatched keyup event", + this)); + if (mWidget->Destroyed()) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleAppCommandMessage(), keyup event caused " + "destroying the widget", + this)); + return true; + } + } + + return consumed; +} + +bool NativeKey::HandleKeyDownMessage(bool* aEventDispatched) const { + MOZ_ASSERT(IsKeyDownMessage()); + + if (aEventDispatched) { + *aEventDispatched = false; + } + + if (sDispatchedKeyOfAppCommand && + sDispatchedKeyOfAppCommand == mOriginalVirtualKeyCode) { + // The multimedia key event has already been dispatch from + // HandleAppCommandMessage(). + sDispatchedKeyOfAppCommand = 0; + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), doesn't dispatch keydown " + "event due to already dispatched from HandleAppCommandMessage(), ", + this)); + if (RedirectedKeyDownMessageManager::IsRedirectedMessage(mMsg)) { + RedirectedKeyDownMessageManager::Forget(); + } + return true; + } + + if (IsReservedBySystem()) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), doesn't dispatch keydown " + "event because the key combination is reserved by the system", + this)); + if (RedirectedKeyDownMessageManager::IsRedirectedMessage(mMsg)) { + RedirectedKeyDownMessageManager::Forget(); + } + return false; + } + + if (sPendingHighSurrogate) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), doesn't dispatch keydown " + "event because the key introduced only a high surrotate, so we " + "should wait the following low surrogate input", + this)); + if (RedirectedKeyDownMessageManager::IsRedirectedMessage(mMsg)) { + RedirectedKeyDownMessageManager::Forget(); + } + return false; + } + + // If the widget has gone, we should do nothing. + if (mWidget->Destroyed()) { + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::HandleKeyDownMessage(), WARNING, not handled due to " + "destroyed the widget", + this)); + if (RedirectedKeyDownMessageManager::IsRedirectedMessage(mMsg)) { + RedirectedKeyDownMessageManager::Forget(); + } + return false; + } + + bool defaultPrevented = false; + if (mFakeCharMsgs || + !RedirectedKeyDownMessageManager::IsRedirectedMessage(mMsg)) { + nsresult rv = mDispatcher->BeginNativeInputTransaction(); + if (NS_WARN_IF(NS_FAILED(rv))) { + MOZ_LOG(gKeyLog, LogLevel::Error, + ("%p NativeKey::HandleKeyDownMessage(), FAILED due to " + "BeginNativeInputTransaction() failure", + this)); + return true; + } + + bool isIMEEnabled = WinUtils::IsIMEEnabled(mWidget->GetInputContext()); + + MOZ_LOG(gKeyLog, LogLevel::Debug, + ("%p NativeKey::HandleKeyDownMessage(), initializing keydown " + "event...", + this)); + + WidgetKeyboardEvent keydownEvent(true, eKeyDown, mWidget); + nsEventStatus status = InitKeyEvent(keydownEvent, mModKeyState); + MOZ_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), dispatching keydown event...", + this)); + bool dispatched = mDispatcher->DispatchKeyboardEvent( + eKeyDown, keydownEvent, status, const_cast<NativeKey*>(this)); + if (aEventDispatched) { + *aEventDispatched = dispatched; + } + if (!dispatched) { + // If the keydown event wasn't fired, there must be composition. + // we don't need to do anything anymore. + MOZ_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), doesn't dispatch keypress " + "event(s) because keydown event isn't dispatched actually", + this)); + return false; + } + defaultPrevented = status == nsEventStatus_eConsumeNoDefault; + + if (mWidget->Destroyed() || IsFocusedWindowChanged()) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), keydown event caused " + "destroying the widget", + this)); + return true; + } + + MOZ_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), dispatched keydown event, " + "dispatched=%s, defaultPrevented=%s", + this, GetBoolName(dispatched), GetBoolName(defaultPrevented))); + + // 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 && !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); + + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), redirecting %s...", + this, ToString(mMsg).get())); + + ::SendInput(1, &keyinput, sizeof(keyinput)); + + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), redirected %s", this, + ToString(mMsg).get())); + + // 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 { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), received a redirected %s", + this, ToString(mMsg).get())); + + defaultPrevented = RedirectedKeyDownMessageManager::DefaultPrevented(); + // If this is redirected keydown message, we have dispatched the keydown + // event already. + if (aEventDispatched) { + *aEventDispatched = true; + } + } + + RedirectedKeyDownMessageManager::Forget(); + + MOZ_ASSERT(!mWidget->Destroyed()); + + // If the key was processed by IME and didn't cause WM_(SYS)CHAR messages, we + // shouldn't dispatch keypress event. + if (mOriginalVirtualKeyCode == VK_PROCESSKEY && + !IsFollowedByPrintableCharOrSysCharMessage()) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), not dispatching keypress " + "event because the key was already handled by IME, " + "defaultPrevented=%s", + this, GetBoolName(defaultPrevented))); + return defaultPrevented; + } + + if (defaultPrevented) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), not dispatching keypress " + "event because preceding keydown event was consumed", + this)); + return true; + } + + MOZ_ASSERT(!mCharMessageHasGone, + "If following char message was consumed by somebody, " + "keydown event should have been consumed before dispatch"); + + // If mCommittedCharsAndModifiers was initialized with following char + // messages, we should dispatch keypress events with its information. + if (IsFollowedByPrintableCharOrSysCharMessage()) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), tries to be dispatching " + "keypress events with retrieved char messages...", + this)); + return DispatchKeyPressEventsWithRetrievedCharMessages(); + } + + // If we won't be getting a WM_CHAR, WM_SYSCHAR or WM_DEADCHAR, synthesize a + // keypress for almost all keys + if (NeedsToHandleWithoutFollowingCharMessages()) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), tries to be dispatching " + "keypress events...", + this)); + return DispatchKeyPressEventsWithoutCharMessage(); + } + + // If WM_KEYDOWN of VK_PACKET isn't followed by WM_CHAR, we don't need to + // dispatch keypress events. + if (mVirtualKeyCode == VK_PACKET) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), not dispatching keypress " + "event " + "because the key is VK_PACKET and there are no char messages", + this)); + return false; + } + + 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. + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), not dispatching keypress " + "event " + "because the key event is simple printable key's event but not " + "followed " + "by char messages", + this)); + return false; + } + + if (mIsDeadKey) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), not dispatching keypress " + "event " + "because the key is a dead key and not followed by char messages", + this)); + return false; + } + + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyDownMessage(), tries to be dispatching " + "keypress events due to no following char messages...", + this)); + return DispatchKeyPressEventsWithoutCharMessage(); +} + +bool NativeKey::HandleCharMessage(bool* aEventDispatched) const { + MOZ_ASSERT(IsCharOrSysCharMessage(mMsg)); + return HandleCharMessage(mMsg, aEventDispatched); +} + +bool NativeKey::HandleCharMessage(const MSG& aCharMsg, + bool* aEventDispatched) const { + MOZ_ASSERT(IsKeyDownMessage() || IsCharOrSysCharMessage(mMsg)); + MOZ_ASSERT(IsCharOrSysCharMessage(aCharMsg.message)); + + if (aEventDispatched) { + *aEventDispatched = false; + } + + if ((IsCharOrSysCharMessage(mMsg) || IsEnterKeyPressCharMessage(mMsg)) && + IsAnotherInstanceRemovingCharMessage()) { + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::HandleCharMessage(), WARNING, does nothing because " + "the message should be handled in another instance removing this " + "message", + this)); + // Consume this for now because it will be handled by another instance. + return true; + } + + // If the key combinations is reserved by the system, we shouldn't dispatch + // eKeyPress event for it and passes the message to next wndproc. + if (IsReservedBySystem()) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleCharMessage(), doesn't dispatch keypress " + "event because the key combination is reserved by the system", + this)); + return false; + } + + // If the widget has gone, we should do nothing. + if (mWidget->Destroyed()) { + MOZ_LOG(gKeyLog, LogLevel::Warning, + ("%p NativeKey::HandleCharMessage(), WARNING, not handled due to " + "destroyed the widget", + this)); + return false; + } + + // When a control key is inputted by a key, it should be handled without + // WM_*CHAR messages at receiving WM_*KEYDOWN message. So, when we receive + // WM_*CHAR message directly, we see a control character here. + // Note that when the char is '\r', it means that the char message should + // cause "Enter" keypress event for inserting a line break. + if (IsControlCharMessage(aCharMsg) && !IsEnterKeyPressCharMessage(aCharMsg)) { + // In this case, we don't need to dispatch eKeyPress event because: + // 1. We're the only browser which dispatches "keypress" event for + // non-printable characters (Although, both Chrome and Edge dispatch + // "keypress" event for some keys accidentally. For example, "IntlRo" + // key with Ctrl of Japanese keyboard layout). + // 2. Currently, we may handle shortcut keys with "keydown" event if + // it's reserved or something. So, we shouldn't dispatch "keypress" + // event without it. + // Note that this does NOT mean we stop dispatching eKeyPress event for + // key presses causes a control character when Ctrl is pressed. In such + // case, DispatchKeyPressEventsWithoutCharMessage() dispatches eKeyPress + // instead of this method. + MOZ_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleCharMessage(), doesn't dispatch keypress " + "event because received a control character input without WM_KEYDOWN", + this)); + return false; + } + + // XXXmnakano I think that if mMsg is WM_CHAR, i.e., it comes without + // preceding WM_KEYDOWN, we should should dispatch composition + // events instead of eKeyPress because they are not caused by + // actual keyboard operation. + + // First, handle normal text input or non-printable key case here. + WidgetKeyboardEvent keypressEvent(true, eKeyPress, mWidget); + if (IsEnterKeyPressCharMessage(aCharMsg)) { + keypressEvent.mKeyCode = NS_VK_RETURN; + } else { + keypressEvent.mCharCode = static_cast<uint32_t>(aCharMsg.wParam); + } + nsresult rv = mDispatcher->BeginNativeInputTransaction(); + if (NS_WARN_IF(NS_FAILED(rv))) { + MOZ_LOG(gKeyLog, LogLevel::Error, + ("%p NativeKey::HandleCharMessage(), FAILED due to " + "BeginNativeInputTransaction() failure", + this)); + return true; + } + + MOZ_LOG(gKeyLog, LogLevel::Debug, + ("%p NativeKey::HandleCharMessage(), initializing keypress " + "event...", + this)); + + ModifierKeyState modKeyState(mModKeyState); + // When AltGr is pressed, both Alt and Ctrl are active. However, when they + // are active, TextEditor won't treat the keypress event as inputting a + // character. Therefore, when AltGr is pressed and the key tries to input + // a character, let's set them to false. + if (modKeyState.IsControl() && modKeyState.IsAlt() && + IsPrintableCharMessage(aCharMsg)) { + modKeyState.Unset(MODIFIER_ALT | MODIFIER_CONTROL); + } + nsEventStatus status = InitKeyEvent(keypressEvent, modKeyState); + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleCharMessage(), dispatching keypress event...", + this)); + bool dispatched = mDispatcher->MaybeDispatchKeypressEvents( + keypressEvent, status, const_cast<NativeKey*>(this)); + if (aEventDispatched) { + *aEventDispatched = dispatched; + } + if (mWidget->Destroyed()) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleCharMessage(), keypress event caused " + "destroying the widget", + this)); + return true; + } + bool consumed = status == nsEventStatus_eConsumeNoDefault; + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleCharMessage(), dispatched keypress event, " + "dispatched=%s, consumed=%s", + this, GetBoolName(dispatched), GetBoolName(consumed))); + return consumed; +} + +bool NativeKey::HandleKeyUpMessage(bool* aEventDispatched) const { + MOZ_ASSERT(IsKeyUpMessage()); + + if (aEventDispatched) { + *aEventDispatched = false; + } + + // If the key combinations is reserved by the system, we shouldn't dispatch + // eKeyUp event for it and passes the message to next wndproc. + if (IsReservedBySystem()) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyUpMessage(), doesn't dispatch keyup " + "event because the key combination is reserved by the system", + this)); + return false; + } + + if (sPendingHighSurrogate) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyUpMessage(), doesn't dispatch keyup " + "event because the key introduced only a high surrotate, so we " + "should wait the following low surrogate input", + this)); + return false; + } + + // If the widget has gone, we should do nothing. + if (mWidget->Destroyed()) { + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::HandleKeyUpMessage(), WARNING, not handled due to " + "destroyed the widget", + this)); + return false; + } + + nsresult rv = mDispatcher->BeginNativeInputTransaction(); + if (NS_WARN_IF(NS_FAILED(rv))) { + MOZ_LOG(gKeyLog, LogLevel::Error, + ("%p NativeKey::HandleKeyUpMessage(), FAILED due to " + "BeginNativeInputTransaction() failure", + this)); + return true; + } + + MOZ_LOG(gKeyLog, LogLevel::Debug, + ("%p NativeKey::HandleKeyUpMessage(), initializing keyup event...", + this)); + WidgetKeyboardEvent keyupEvent(true, eKeyUp, mWidget); + nsEventStatus status = InitKeyEvent(keyupEvent, mModKeyState); + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyUpMessage(), dispatching keyup event...", + this)); + bool dispatched = mDispatcher->DispatchKeyboardEvent( + eKeyUp, keyupEvent, status, const_cast<NativeKey*>(this)); + if (aEventDispatched) { + *aEventDispatched = dispatched; + } + if (mWidget->Destroyed()) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyUpMessage(), keyup event caused " + "destroying the widget", + this)); + return true; + } + bool consumed = status == nsEventStatus_eConsumeNoDefault; + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::HandleKeyUpMessage(), dispatched keyup event, " + "dispatched=%s, consumed=%s", + this, GetBoolName(dispatched), GetBoolName(consumed))); + return consumed; +} + +bool NativeKey::NeedsToHandleWithoutFollowingCharMessages() const { + MOZ_ASSERT(IsKeyDownMessage()); + + // If the key combination is reserved by the system, the caller shouldn't + // do anything with following WM_*CHAR messages. So, let's return true here. + if (IsReservedBySystem()) { + return true; + } + + // If the keydown message is generated for inputting some Unicode characters + // via SendInput() API, we need to handle it only with WM_*CHAR messages. + if (mVirtualKeyCode == VK_PACKET) { + return false; + } + + // If following char message is for a control character, it should be handled + // without WM_CHAR message. This is typically Ctrl + [a-z]. + if (mFollowingCharMsgs.Length() == 1 && + IsControlCharMessage(mFollowingCharMsgs[0])) { + return true; + } + + // If keydown message is followed by WM_CHAR or WM_SYSCHAR whose wParam isn't + // a control character, we should dispatch keypress event with the char + // message even with any modifier state. + if (IsFollowedByPrintableCharOrSysCharMessage()) { + return false; + } + + // If any modifier keys which may cause printable keys becoming non-printable + // are not pressed, we don't need special handling for the key. + // Note that if the key does not produce a character with AltGr and when + // AltGr key is pressed, we don't need to dispatch eKeyPress event for it + // because AltGr shouldn't be used for a modifier for a shortcut without + // Ctrl, Alt or Win. That means that we should treat it in same path for + // Shift 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; +} + +static nsCString GetResultOfInSendMessageEx() { + DWORD ret = ::InSendMessageEx(nullptr); + if (!ret) { + return "ISMEX_NOSEND"_ns; + } + nsCString 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; +} + +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::IsSamePhysicalKeyMessage(const MSG& aKeyOrCharMsg1, + const MSG& aKeyOrCharMsg2) const { + if (NS_WARN_IF(aKeyOrCharMsg1.message < WM_KEYFIRST) || + NS_WARN_IF(aKeyOrCharMsg1.message > WM_KEYLAST) || + NS_WARN_IF(aKeyOrCharMsg2.message < WM_KEYFIRST) || + NS_WARN_IF(aKeyOrCharMsg2.message > WM_KEYLAST)) { + return false; + } + return WinUtils::GetScanCode(aKeyOrCharMsg1.lParam) == + WinUtils::GetScanCode(aKeyOrCharMsg2.lParam) && + WinUtils::IsExtendedScanCode(aKeyOrCharMsg1.lParam) == + WinUtils::IsExtendedScanCode(aKeyOrCharMsg2.lParam); +} + +bool NativeKey::GetFollowingCharMessage(MSG& aCharMsg) { + MOZ_ASSERT(IsKeyDownMessage()); + + aCharMsg.message = WM_NULL; + + if (mFakeCharMsgs) { + for (size_t i = 0; i < mFakeCharMsgs->Length(); i++) { + FakeCharMsg& fakeCharMsg = mFakeCharMsgs->ElementAt(i); + if (fakeCharMsg.mConsumed) { + continue; + } + MSG charMsg = fakeCharMsg.GetCharMsg(mMsg.hwnd); + fakeCharMsg.mConsumed = true; + if (!IsCharMessage(charMsg)) { + return false; + } + aCharMsg = charMsg; + return true; + } + return false; + } + + // 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)) { + MOZ_LOG(gKeyLog, LogLevel::Debug, + ("%p NativeKey::GetFollowingCharMessage(), there are no char " + "messages", + this)); + return false; + } + const MSG kFoundCharMsg = nextKeyMsg; + + AutoRestore<MSG> saveLastRemovingMsg(mRemovingMsg); + mRemovingMsg = nextKeyMsg; + + mReceivedMsg = sEmptyMSG; + AutoRestore<MSG> ensureToClearRecivedMsg(mReceivedMsg); + + // 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 < 50; 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; + + // If another instance was created for the removing message during trying + // to remove a char message, the instance didn't handle it for preventing + // recursive handling. So, let's handle it in this instance. + if (!IsEmptyMSG(mReceivedMsg)) { + // If focus is moved to different window, we shouldn't handle it on + // the widget. Let's discard it for now. + if (mReceivedMsg.hwnd != nextKeyMsg.hwnd) { + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, received a " + "char message during removing it from the queue, but it's for " + "different window, mReceivedMsg=%s, nextKeyMsg=%s, " + "kFoundCharMsg=%s", + this, ToString(mReceivedMsg).get(), ToString(nextKeyMsg).get(), + ToString(kFoundCharMsg).get())); + // There might still exist char messages, the loop of calling + // this method should be continued. + aCharMsg.message = WM_NULL; + return true; + } + // Even if the received message is different from what we tried to + // remove from the queue, let's take the received message as a part of + // the result of this key sequence. + if (mReceivedMsg.message != nextKeyMsg.message || + mReceivedMsg.wParam != nextKeyMsg.wParam || + mReceivedMsg.lParam != nextKeyMsg.lParam) { + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, received a " + "char message during removing it from the queue, but it's " + "differnt from what trying to remove from the queue, " + "aCharMsg=%s, nextKeyMsg=%s, kFoundCharMsg=%s", + this, ToString(mReceivedMsg).get(), ToString(nextKeyMsg).get(), + ToString(kFoundCharMsg).get())); + } else { + MOZ_LOG( + gKeyLog, LogLevel::Debug, + ("%p NativeKey::GetFollowingCharMessage(), succeeded to " + "retrieve next char message via another instance, aCharMsg=%s, " + "kFoundCharMsg=%s", + this, ToString(mReceivedMsg).get(), + ToString(kFoundCharMsg).get())); + } + aCharMsg = mReceivedMsg; + return 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)) { + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, failed to " + "remove a char message, but it's already gone from all message " + "queues, nextKeyMsg=%s, kFoundCharMsg=%s", + this, ToString(nextKeyMsg).get(), ToString(kFoundCharMsg).get())); + return true; // XXX should return false in this case + } + // The next key message is redirected to different window created by our + // thread, we should do nothing because we must not have focus. + if (nextKeyMsgInAllWindows.hwnd != mMsg.hwnd) { + aCharMsg = nextKeyMsgInAllWindows; + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, failed to " + "remove a char message, but found in another message queue, " + "nextKeyMsgInAllWindows=%s, nextKeyMsg=%s, kFoundCharMsg=%s", + this, ToString(nextKeyMsgInAllWindows).get(), + ToString(nextKeyMsg).get(), ToString(kFoundCharMsg).get())); + return true; + } + // If next key message becomes non-char message, this key operation + // may have already been consumed or canceled. + if (!IsCharMessage(nextKeyMsgInAllWindows)) { + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, failed to " + "remove a char message and next key message becomes non-char " + "message, nextKeyMsgInAllWindows=%s, nextKeyMsg=%s, " + "kFoundCharMsg=%s", + this, ToString(nextKeyMsgInAllWindows).get(), + ToString(nextKeyMsg).get(), ToString(kFoundCharMsg).get())); + MOZ_ASSERT(!mCharMessageHasGone); + mFollowingCharMsgs.Clear(); + mCharMessageHasGone = true; + return false; + } + // If next key message is still a char message but different key message, + // we should treat current key operation is consumed or canceled and + // next char message should be handled as an orphan char message later. + if (!IsSamePhysicalKeyMessage(nextKeyMsgInAllWindows, kFoundCharMsg)) { + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, failed to " + "remove a char message and next key message becomes differnt " + "key's " + "char message, nextKeyMsgInAllWindows=%s, nextKeyMsg=%s, " + "kFoundCharMsg=%s", + this, ToString(nextKeyMsgInAllWindows).get(), + ToString(nextKeyMsg).get(), ToString(kFoundCharMsg).get())); + MOZ_ASSERT(!mCharMessageHasGone); + mFollowingCharMsgs.Clear(); + mCharMessageHasGone = true; + return false; + } + // If next key message is still a char message but the message is changed, + // we should retry to remove the new message with PeekMessage() again. + if (nextKeyMsgInAllWindows.message != nextKeyMsg.message) { + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, failed to " + "remove a char message due to message change, let's retry to " + "remove the message with newly found char message, " + "nextKeyMsgInAllWindows=%s, nextKeyMsg=%s, kFoundCharMsg=%s", + this, ToString(nextKeyMsgInAllWindows).get(), + ToString(nextKeyMsg).get(), ToString(kFoundCharMsg).get())); + nextKeyMsg = nextKeyMsgInAllWindows; + continue; + } + // If there is still existing a char message caused by same physical key + // in the queue but PeekMessage(PM_REMOVE) failed to remove it from the + // queue, it might be possible that the odd keyboard layout or utility + // hooks only PeekMessage(PM_NOREMOVE) and GetMessage(). So, let's try + // remove the char message with GetMessage() again. + // FYI: The wParam might be different from the found message, but it's + // okay because we assume that odd keyboard layouts return actual + // inputting character at removing the char message. + if (WinUtils::GetMessage(&removedMsg, mMsg.hwnd, nextKeyMsg.message, + nextKeyMsg.message)) { + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, failed to " + "remove a char message, but succeeded with GetMessage(), " + "removedMsg=%s, kFoundCharMsg=%s", + this, ToString(removedMsg).get(), ToString(kFoundCharMsg).get())); + // Cancel to crash, but we need to check the removed message value. + doCrash = false; + } + // If we've already removed some WM_NULL messages from the queue and + // the found message has already gone from the queue, let's treat the key + // as inputting no characters and already consumed. + else if (i > 0) { + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, failed to " + "remove a char message, but removed %d WM_NULL messages", + this, i)); + // If the key is a printable key or a control key but tried to input + // a character, mark mCharMessageHasGone true for handling the keydown + // event as inputting empty string. + MOZ_ASSERT(!mCharMessageHasGone); + mFollowingCharMsgs.Clear(); + mCharMessageHasGone = true; + return false; + } + MOZ_LOG(gKeyLog, LogLevel::Error, + ("%p NativeKey::GetFollowingCharMessage(), FAILED, lost target " + "message to remove, nextKeyMsg=%s", + this, ToString(nextKeyMsg).get())); + } + + if (doCrash) { + nsPrintfCString info( + "\nPeekMessage() failed to remove char message! " + "\nActive keyboard layout=0x%p (%s), " + "\nHandling message: %s, InSendMessageEx()=%s, " + "\nFound message: %s, " + "\nWM_NULL has been removed: %d, " + "\nNext key message in all windows: %s, " + "time=%ld, ", + KeyboardLayout::GetInstance()->GetLoadedLayout(), + KeyboardLayout::GetInstance()->GetLoadedLayoutName().get(), + ToString(mMsg).get(), GetResultOfInSendMessageEx().get(), + ToString(kFoundCharMsg).get(), i, + ToString(nextKeyMsgInAllWindows).get(), 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, time=%ld", + ToString(nextMsg).get(), nextMsg.time); + CrashReporter::AppendAppNotesToCrashReport(info); + } else { + CrashReporter::AppendAppNotesToCrashReport( + "\nThere is no message in any window"_ns); + } + + MOZ_CRASH("We lost the following char message"); + } + + // We're still not sure why ::PeekMessage() may return WM_NULL even with + // its first message and its last message are same message. However, + // at developing Metrofox, we met this case even with usual keyboard + // layouts. So, it might be possible in desktop application or it really + // occurs with some odd keyboard layouts which perhaps hook API. + if (removedMsg.message == WM_NULL) { + MOZ_LOG(gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, failed to " + "remove a char message, instead, removed WM_NULL message, " + "removedMsg=%s", + this, ToString(removedMsg).get())); + // Check if there is the message which we're trying to remove. + MSG newNextKeyMsg; + if (!WinUtils::PeekMessage(&newNextKeyMsg, mMsg.hwnd, WM_KEYFIRST, + WM_KEYLAST, PM_NOREMOVE | PM_NOYIELD)) { + // If there is no key message, we should mark this keydown as consumed + // because the key operation may have already been handled or canceled. + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, failed to " + "remove a char message because it's gone during removing it from " + "the queue, nextKeyMsg=%s, kFoundCharMsg=%s", + this, ToString(nextKeyMsg).get(), ToString(kFoundCharMsg).get())); + MOZ_ASSERT(!mCharMessageHasGone); + mFollowingCharMsgs.Clear(); + mCharMessageHasGone = true; + return false; + } + if (!IsCharMessage(newNextKeyMsg)) { + // If next key message becomes a non-char message, we should mark this + // keydown as consumed because the key operation may have already been + // handled or canceled. + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, failed to " + "remove a char message because it's gone during removing it from " + "the queue, nextKeyMsg=%s, newNextKeyMsg=%s, kFoundCharMsg=%s", + this, ToString(nextKeyMsg).get(), ToString(newNextKeyMsg).get(), + ToString(kFoundCharMsg).get())); + MOZ_ASSERT(!mCharMessageHasGone); + mFollowingCharMsgs.Clear(); + mCharMessageHasGone = true; + return false; + } + MOZ_LOG( + gKeyLog, LogLevel::Debug, + ("%p NativeKey::GetFollowingCharMessage(), there is the message " + "which is being tried to be removed from the queue, trying again...", + this)); + 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) { + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, succeeded to " + "remove a char message, but the removed message's wParam is 0, " + "removedMsg=%s", + this, ToString(removedMsg).get())); + return false; + } + + // This is normal case. + if (MayBeSameCharMessage(removedMsg, nextKeyMsg)) { + aCharMsg = removedMsg; + MOZ_LOG( + gKeyLog, LogLevel::Debug, + ("%p NativeKey::GetFollowingCharMessage(), succeeded to retrieve " + "next char message, aCharMsg=%s", + this, ToString(aCharMsg).get())); + return true; + } + + // Even if removed message is different char message from the found char + // message, when the scan code is same, we can assume that the message + // is overwritten by somebody who hooks API. See bug 1336028 comment 0 for + // the possible scenarios. + if (IsCharMessage(removedMsg) && + IsSamePhysicalKeyMessage(removedMsg, nextKeyMsg)) { + aCharMsg = removedMsg; + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, succeeded to " + "remove a char message, but the removed message was changed from " + "the found message except their scancode, aCharMsg=%s, " + "nextKeyMsg=%s, kFoundCharMsg=%s", + this, ToString(aCharMsg).get(), ToString(nextKeyMsg).get(), + ToString(kFoundCharMsg).get())); + return true; + } + + // When found message's wParam is 0 and its scancode is 0xFF, we may remove + // usual char message actually. In such case, we should use the removed + // char message. + if (IsCharMessage(removedMsg) && !nextKeyMsg.wParam && + WinUtils::GetScanCode(nextKeyMsg.lParam) == 0xFF) { + aCharMsg = removedMsg; + MOZ_LOG( + gKeyLog, LogLevel::Warning, + ("%p NativeKey::GetFollowingCharMessage(), WARNING, succeeded to " + "remove a char message, but the removed message was changed from " + "the found message but the found message was odd, so, ignoring the " + "odd found message and respecting the removed message, aCharMsg=%s, " + "nextKeyMsg=%s, kFoundCharMsg=%s", + this, ToString(aCharMsg).get(), ToString(nextKeyMsg).get(), + ToString(kFoundCharMsg).get())); + return true; + } + + // 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. + MOZ_LOG( + gKeyLog, LogLevel::Error, + ("%p NativeKey::GetFollowingCharMessage(), FAILED, removed message " + "is really different from what we have already found, removedMsg=%s, " + "nextKeyMsg=%s, kFoundCharMsg=%s", + this, ToString(removedMsg).get(), ToString(nextKeyMsg).get(), + ToString(kFoundCharMsg).get())); + nsPrintfCString info( + "\nPeekMessage() removed unexpcted char message! " + "\nActive keyboard layout=0x%p (%s), " + "\nHandling message: %s, InSendMessageEx()=%s, " + "\nFound message: %s, " + "\nRemoved message: %s, ", + KeyboardLayout::GetInstance()->GetLoadedLayout(), + KeyboardLayout::GetInstance()->GetLoadedLayoutName().get(), + ToString(mMsg).get(), GetResultOfInSendMessageEx().get(), + ToString(kFoundCharMsg).get(), ToString(removedMsg).get()); + 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, ", + ToString(nextKeyMsgAfter).get()); + CrashReporter::AppendAppNotesToCrashReport(info); + } else { + CrashReporter::AppendAppNotesToCrashReport( + nsLiteralCString("\nThere is no key message after unexpected char " + "message removed, ")); + } + // Another window has a key message? + if (WinUtils::PeekMessage(&nextKeyMsgInAllWindows, 0, WM_KEYFIRST, + WM_KEYLAST, PM_NOREMOVE | PM_NOYIELD)) { + nsPrintfCString info("\nNext key message in all windows: %s.", + ToString(nextKeyMsgInAllWindows).get()); + CrashReporter::AppendAppNotesToCrashReport(info); + } else { + CrashReporter::AppendAppNotesToCrashReport( + "\nThere is no key message in any windows."_ns); + } + + MOZ_CRASH("PeekMessage() removed unexpected message"); + } + MOZ_LOG( + gKeyLog, LogLevel::Error, + ("%p NativeKey::GetFollowingCharMessage(), FAILED, removed messages " + "are all WM_NULL, nextKeyMsg=%s", + this, ToString(nextKeyMsg).get())); + nsPrintfCString info( + "\nWe lost following char message! " + "\nActive keyboard layout=0x%p (%s), " + "\nHandling message: %s, InSendMessageEx()=%s, \n" + "Found message: %s, removed a lot of WM_NULL", + KeyboardLayout::GetInstance()->GetLoadedLayout(), + KeyboardLayout::GetInstance()->GetLoadedLayoutName().get(), + ToString(mMsg).get(), GetResultOfInSendMessageEx().get(), + ToString(kFoundCharMsg).get()); + CrashReporter::AppendAppNotesToCrashReport(info); + MOZ_CRASH("We lost the following char message"); + return false; +} + +void NativeKey::ComputeInputtingStringWithKeyboardLayout() { + KeyboardLayout* keyboardLayout = KeyboardLayout::GetInstance(); + + if (KeyboardLayout::IsPrintableCharKey(mVirtualKeyCode) || + mCharMessageHasGone) { + mInputtingStringAndModifiers = mCommittedCharsAndModifiers; + } else { + mInputtingStringAndModifiers.Clear(); + } + mShiftedString.Clear(); + mUnshiftedString.Clear(); + mShiftedLatinChar = mUnshiftedLatinChar = 0; + + // XXX How about when Win key is pressed? + if (!mModKeyState.IsControl() && !mModKeyState.IsAlt()) { + return; + } + + // If user is inputting a Unicode character with typing Alt + Numpad + // keys, we shouldn't set alternative key codes because the key event + // shouldn't match with a mnemonic. However, we should set only + // mUnshiftedString for keeping traditional behavior at WM_SYSKEYDOWN. + // FYI: I guess that it's okay that mUnshiftedString stays empty. So, + // if its value breaks something, you must be able to just return here. + if (MaybeTypingUnicodeScalarValue()) { + if (!mCommittedCharsAndModifiers.IsEmpty()) { + MOZ_ASSERT(mMsg.message == WM_SYSKEYDOWN); + char16_t num = mCommittedCharsAndModifiers.CharAt(0); + MOZ_ASSERT(num >= '0' && num <= '9'); + mUnshiftedString.Append(num, MODIFIER_NONE); + return; + } + // If user presses a function key without NumLock or 3rd party utility + // synthesizes a function key on numpad, we should handle it as-is because + // the user's intention may be performing `Alt` + foo. + MOZ_ASSERT(!KeyboardLayout::IsPrintableCharKey(mVirtualKeyCode)); + return; + } + + ModifierKeyState capsLockState(mModKeyState.GetModifiers() & + MODIFIER_CAPSLOCK); + + mUnshiftedString = + keyboardLayout->GetUniCharsAndModifiers(mVirtualKeyCode, capsLockState); + capsLockState.Set(MODIFIER_SHIFT); + mShiftedString = + 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(), &mUnshiftedLatinChar, + &mShiftedLatinChar); + + // If the mShiftedLatinChar isn't 0, the key code is NS_VK_[A-Z]. + if (mShiftedLatinChar) { + // 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 (mUnshiftedLatinChar == mUnshiftedString.CharAt(0) && + mShiftedLatinChar == mShiftedString.CharAt(0)) { + mShiftedLatinChar = mUnshiftedLatinChar = 0; + } + } else if (mUnshiftedLatinChar) { + // If the mShiftedLatinChar is 0, the mKeyCode 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 mUnshiftedLatinChar is produced by the key on current + // keyboard layout, we shouldn't append it to alternativeCharCode. + if (mUnshiftedLatinChar == mUnshiftedString.CharAt(0) || + mUnshiftedLatinChar == mShiftedString.CharAt(0)) { + mUnshiftedLatinChar = 0; + } + } + + if (!mModKeyState.IsControl()) { + return; + } + + // If the mCharCode is not ASCII character, we should replace the + // mCharCode with ASCII character only when Ctrl is pressed. + // But don't replace the mCharCode when the mCharCode is not same as + // unmodified characters. In such case, Ctrl is sometimes used for a + // part of character inputting key combination like Shift. + uint32_t ch = + mModKeyState.IsShift() ? mShiftedLatinChar : mUnshiftedLatinChar; + if (!ch) { + return; + } + if (mInputtingStringAndModifiers.IsEmpty() || + mInputtingStringAndModifiers.UniCharsCaseInsensitiveEqual( + mModKeyState.IsShift() ? mShiftedString : mUnshiftedString)) { + mInputtingStringAndModifiers.Clear(); + mInputtingStringAndModifiers.Append(ch, mModKeyState.GetModifiers()); + } +} + +bool NativeKey::DispatchKeyPressEventsWithRetrievedCharMessages() const { + MOZ_ASSERT(IsKeyDownMessage()); + MOZ_ASSERT(IsFollowedByPrintableCharOrSysCharMessage()); + MOZ_ASSERT(!mWidget->Destroyed()); + + nsresult rv = mDispatcher->BeginNativeInputTransaction(); + if (NS_WARN_IF(NS_FAILED(rv))) { + MOZ_LOG( + gKeyLog, LogLevel::Error, + ("%p NativeKey::DispatchKeyPressEventsWithRetrievedCharMessages(), " + "FAILED due to BeginNativeInputTransaction() failure", + this)); + return true; + } + WidgetKeyboardEvent keypressEvent(true, eKeyPress, mWidget); + MOZ_LOG(gKeyLog, LogLevel::Debug, + ("%p NativeKey::DispatchKeyPressEventsWithRetrievedCharMessages(), " + "initializing keypress event...", + this)); + ModifierKeyState modKeyState(mModKeyState); + if (mCanIgnoreModifierStateAtKeyPress && IsFollowedByPrintableCharMessage()) { + // If eKeyPress event should cause inputting text in focused editor, + // we need to remove Alt and Ctrl state. + modKeyState.Unset(MODIFIER_ALT | MODIFIER_CONTROL); + } + // We don't need to send char message here if there are two or more retrieved + // messages because we need to set each message to each eKeyPress event. + bool needsCallback = mFollowingCharMsgs.Length() > 1; + nsEventStatus status = InitKeyEvent(keypressEvent, modKeyState); + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::DispatchKeyPressEventsWithRetrievedCharMessages(), " + "dispatching keypress event(s)...", + this)); + bool dispatched = mDispatcher->MaybeDispatchKeypressEvents( + keypressEvent, status, const_cast<NativeKey*>(this), needsCallback); + if (mWidget->Destroyed()) { + MOZ_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::DispatchKeyPressEventsWithRetrievedCharMessages(), " + "keypress event(s) caused destroying the widget", + this)); + return true; + } + bool consumed = status == nsEventStatus_eConsumeNoDefault; + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::DispatchKeyPressEventsWithRetrievedCharMessages(), " + "dispatched keypress event(s), dispatched=%s, consumed=%s", + this, GetBoolName(dispatched), GetBoolName(consumed))); + return consumed; +} + +bool NativeKey::DispatchKeyPressEventsWithoutCharMessage() const { + MOZ_ASSERT(IsKeyDownMessage()); + MOZ_ASSERT(!mIsDeadKey || !mCommittedCharsAndModifiers.IsEmpty()); + MOZ_ASSERT(!mWidget->Destroyed()); + + nsresult rv = mDispatcher->BeginNativeInputTransaction(); + if (NS_WARN_IF(NS_FAILED(rv))) { + MOZ_LOG(gKeyLog, LogLevel::Error, + ("%p NativeKey::DispatchKeyPressEventsWithoutCharMessage(), " + "FAILED due " + "to BeginNativeInputTransaction() failure", + this)); + return true; + } + + WidgetKeyboardEvent keypressEvent(true, eKeyPress, mWidget); + if (mInputtingStringAndModifiers.IsEmpty() && mShiftedString.IsEmpty() && + mUnshiftedString.IsEmpty()) { + keypressEvent.mKeyCode = mDOMKeyCode; + } + MOZ_LOG(gKeyLog, LogLevel::Debug, + ("%p NativeKey::DispatchKeyPressEventsWithoutCharMessage(), " + "initializing " + "keypress event...", + this)); + nsEventStatus status = InitKeyEvent(keypressEvent, mModKeyState); + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::DispatchKeyPressEventsWithoutCharMessage(), " + "dispatching " + "keypress event(s)...", + this)); + bool dispatched = mDispatcher->MaybeDispatchKeypressEvents( + keypressEvent, status, const_cast<NativeKey*>(this)); + if (mWidget->Destroyed()) { + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::DispatchKeyPressEventsWithoutCharMessage(), " + "keypress event(s) caused destroying the widget", + this)); + return true; + } + bool consumed = status == nsEventStatus_eConsumeNoDefault; + MOZ_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::DispatchKeyPressEventsWithoutCharMessage(), dispatched " + "keypress event(s), dispatched=%s, consumed=%s", + this, GetBoolName(dispatched), GetBoolName(consumed))); + return consumed; +} + +void NativeKey::WillDispatchKeyboardEvent(WidgetKeyboardEvent& aKeyboardEvent, + uint32_t aIndex) { + // If it's an eKeyPress event and it's generated from retrieved char message, + // we need to set raw message information for plugins. + if (aKeyboardEvent.mMessage == eKeyPress && + IsFollowedByPrintableCharOrSysCharMessage()) { + MOZ_RELEASE_ASSERT(aIndex < mCommittedCharsAndModifiers.Length()); + uint32_t foundPrintableCharMessages = 0; + for (size_t i = 0; i < mFollowingCharMsgs.Length(); ++i) { + if (!IsPrintableCharOrSysCharMessage(mFollowingCharMsgs[i])) { + // XXX Should we dispatch a plugin event for WM_*DEADCHAR messages and + // WM_CHAR with a control character here? But we're not sure + // how can we create such message queue (i.e., WM_CHAR or + // WM_SYSCHAR with a printable character and such message are + // generated by a keydown). So, let's ignore such case until + // we'd get some bug reports. + MOZ_LOG(gKeyLog, LogLevel::Warning, + ("%p NativeKey::WillDispatchKeyboardEvent(), WARNING, " + "ignoring %zuth message due to non-printable char message, %s", + this, i + 1, ToString(mFollowingCharMsgs[i]).get())); + continue; + } + if (foundPrintableCharMessages++ == aIndex) { + // Found message which caused the eKeyPress event. + break; + } + } + // Set modifier state from mCommittedCharsAndModifiers because some of them + // might be different. For example, Shift key was pressed at inputting + // dead char but Shift key was released before inputting next character. + if (mCanIgnoreModifierStateAtKeyPress) { + ModifierKeyState modKeyState(mModKeyState); + modKeyState.Unset(MODIFIER_SHIFT | MODIFIER_CONTROL | MODIFIER_ALT | + MODIFIER_ALTGRAPH | MODIFIER_CAPSLOCK); + modKeyState.Set(mCommittedCharsAndModifiers.ModifiersAt(aIndex)); + modKeyState.InitInputEvent(aKeyboardEvent); + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::WillDispatchKeyboardEvent(), " + "setting %uth modifier state to %s", + this, aIndex + 1, ToString(modKeyState).get())); + } + } + size_t longestLength = + std::max(mInputtingStringAndModifiers.Length(), + std::max(mShiftedString.Length(), mUnshiftedString.Length())); + size_t skipUniChars = longestLength - mInputtingStringAndModifiers.Length(); + size_t skipShiftedChars = longestLength - mShiftedString.Length(); + size_t skipUnshiftedChars = longestLength - mUnshiftedString.Length(); + if (aIndex >= longestLength) { + MOZ_LOG( + gKeyLog, LogLevel::Info, + ("%p NativeKey::WillDispatchKeyboardEvent(), does nothing for %uth " + "%s event", + this, aIndex + 1, ToChar(aKeyboardEvent.mMessage))); + return; + } + + // Check if aKeyboardEvent is the last event for a key press. + // So, if it's not an eKeyPress event, it's always the last event. + // Otherwise, check if the index is the last character of + // mCommittedCharsAndModifiers. + bool isLastIndex = aKeyboardEvent.mMessage != eKeyPress || + mCommittedCharsAndModifiers.IsEmpty() || + mCommittedCharsAndModifiers.Length() - 1 == aIndex; + + nsTArray<AlternativeCharCode>& altArray = + aKeyboardEvent.mAlternativeCharCodes; + + // Set charCode and adjust modifier state for every eKeyPress event. + // This is not necessary for the other keyboard events because the other + // keyboard events shouldn't have non-zero charCode value and should have + // current modifier state. + if (aKeyboardEvent.mMessage == eKeyPress && skipUniChars <= aIndex) { + // XXX Modifying modifier state of aKeyboardEvent is illegal, but no way + // to set different modifier state per keypress event except this + // hack. Note that ideally, dead key should cause composition events + // instead of keypress events, though. + if (aIndex - skipUniChars < mInputtingStringAndModifiers.Length()) { + ModifierKeyState modKeyState(mModKeyState); + // 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( + mInputtingStringAndModifiers.ModifiersAt(aIndex - skipUniChars)); + modKeyState.InitInputEvent(aKeyboardEvent); + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::WillDispatchKeyboardEvent(), " + "setting %uth modifier state to %s", + this, aIndex + 1, ToString(modKeyState).get())); + } + uint16_t uniChar = + mInputtingStringAndModifiers.CharAt(aIndex - skipUniChars); + + // The mCharCode was set from mKeyValue. However, for example, when Ctrl key + // is pressed, its value should indicate an ASCII character for backward + // compatibility rather than inputting character without the modifiers. + // Therefore, we need to modify mCharCode value here. + aKeyboardEvent.SetCharCode(uniChar); + MOZ_LOG(gKeyLog, LogLevel::Info, + ("%p NativeKey::WillDispatchKeyboardEvent(), " + "setting %uth charCode to %s", + this, aIndex + 1, GetCharacterCodeName(uniChar).get())); + } + + // We need to append alterntaive charCode values: + // - if the event is eKeyPress, we need to append for the index because + // eKeyPress event is dispatched for every character inputted by a + // key press. + // - if the event is not eKeyPress, we need to append for all characters + // inputted by the key press because the other keyboard events (e.g., + // eKeyDown are eKeyUp) are fired only once for a key press. + size_t count; + if (aKeyboardEvent.mMessage == eKeyPress) { + // Basically, append alternative charCode values only for the index. + count = 1; + // However, if it's the last eKeyPress event but different shift state + // can input longer string, the last eKeyPress event should have all + // remaining alternative charCode values. + if (isLastIndex) { + count = longestLength - aIndex; + } + } else { + count = longestLength; + } + for (size_t i = 0; i < count; ++i) { + uint16_t shiftedChar = 0, unshiftedChar = 0; + if (skipShiftedChars <= aIndex + i) { + shiftedChar = mShiftedString.CharAt(aIndex + i - skipShiftedChars); + } + if (skipUnshiftedChars <= aIndex + i) { + unshiftedChar = mUnshiftedString.CharAt(aIndex + i - skipUnshiftedChars); + } + + if (shiftedChar || unshiftedChar) { + AlternativeCharCode chars(unshiftedChar, shiftedChar); + altArray.AppendElement(chars); + } + + if (!isLastIndex) { + continue; + } + + if (mUnshiftedLatinChar || mShiftedLatinChar) { + AlternativeCharCode chars(mUnshiftedLatinChar, mShiftedLatinChar); + 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 != mUnshiftedString.CharAt(0) && + charForOEMKeyCode != mShiftedString.CharAt(0) && + charForOEMKeyCode != mUnshiftedLatinChar && + charForOEMKeyCode != mShiftedLatinChar) { + AlternativeCharCode OEMChars(charForOEMKeyCode, charForOEMKeyCode); + altArray.AppendElement(OEMChars); + } + } +} + +/***************************************************************************** + * mozilla::widget::KeyboardLayout + *****************************************************************************/ + +KeyboardLayout* KeyboardLayout::sInstance = nullptr; +StaticRefPtr<nsIUserIdleServiceInternal> KeyboardLayout::sIdleService; + +// static +KeyboardLayout* KeyboardLayout::GetInstance() { + if (!sInstance) { + sInstance = new KeyboardLayout(); + } + return sInstance; +} + +// static +void KeyboardLayout::Shutdown() { + delete sInstance; + sInstance = nullptr; + sIdleService = nullptr; +} + +// static +void KeyboardLayout::NotifyIdleServiceOfUserActivity() { + if (!sIdleService) { + sIdleService = nsCOMPtr<nsIUserIdleServiceInternal>( + do_GetService("@mozilla.org/widget/useridleservice;1")) + .forget(); + if (NS_WARN_IF(!sIdleService)) { + return; + } + } + sIdleService->ResetIdleTimeOut(0); +} + +KeyboardLayout::KeyboardLayout() { + mDeadKeyTableListHead = nullptr; + // A dead key sequence should be made from up to 5 keys. Therefore, 4 is + // enough and makes sense because the item is uint8_t. + // (Although, even if it's possible to be 6 keys or more in a sequence, + // this array will be re-allocated). + mActiveDeadKeys.SetCapacity(4); + mDeadKeyShiftStates.SetCapacity(4); + + // If we put it off to load active keyboard layout when first needed, we need + // to load it at instanciation. That makes us save the cost of a call of + // GetKeyboardLayout() API. + if (StaticPrefs::ui_key_layout_load_when_first_needed()) { + OnLayoutChange(::GetKeyboardLayout(0)); + } +} + +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, + KeyboardLayout::GetLayout())); +} + +bool KeyboardLayout::IsDeadKey(uint8_t aVirtualKey, + const ModifierKeyState& aModKeyState) const { + int32_t virtualKeyIndex = GetKeyIndex(aVirtualKey); + + // XXX KeyboardLayout class doesn't support unusual keyboard layout which + // maps some function keys as dead keys. + if (virtualKeyIndex < 0) { + return false; + } + + return mVirtualKeys[virtualKeyIndex].IsDeadKey( + VirtualKey::ModifiersToShiftState(aModKeyState.GetModifiers())); +} + +bool KeyboardLayout::IsSysKey(uint8_t aVirtualKey, + const ModifierKeyState& aModKeyState) const { + // If Alt key is not pressed, it's never a system key combination. + // Additionally, if Ctrl key is pressed, it's never a system key combination + // too. + // FYI: Windows logo key state won't affect if it's a system key. + if (!aModKeyState.IsAlt() || aModKeyState.IsControl()) { + return false; + } + + int32_t virtualKeyIndex = GetKeyIndex(aVirtualKey); + if (virtualKeyIndex < 0) { + return true; + } + + UniCharsAndModifiers inputCharsAndModifiers = + GetUniCharsAndModifiers(aVirtualKey, aModKeyState); + if (inputCharsAndModifiers.IsEmpty()) { + return true; + } + + // If the Alt key state isn't consumed, that means that the key with Alt + // doesn't cause text input. So, the combination is a system key. + return !!(inputCharsAndModifiers.ModifiersAt(0) & MODIFIER_ALT); +} + +void KeyboardLayout::InitNativeKey(NativeKey& aNativeKey) { + if (mIsPendingToRestoreKeyboardLayout) { + LoadLayout(::GetKeyboardLayout(0)); + } + + // If the aNativeKey is initialized with WM_CHAR, the key information + // should be discarded because mKeyValue should have the string to be + // inputted. + if (aNativeKey.mMsg.message == WM_CHAR) { + char16_t ch = static_cast<char16_t>(aNativeKey.mMsg.wParam); + // But don't set key value as printable key if the character is a control + // character such as 0x0D at pressing Enter key. + if (!NativeKey::IsControlChar(ch)) { + aNativeKey.mKeyNameIndex = KEY_NAME_INDEX_USE_STRING; + Modifiers modifiers = + aNativeKey.GetModifiers() & ~(MODIFIER_ALT | MODIFIER_CONTROL); + aNativeKey.mCommittedCharsAndModifiers.Append(ch, modifiers); + return; + } + } + + // If the aNativeKey is in a sequence to input a Unicode character with + // Alt + numpad keys, we should just set the number as the inputting charcter. + // Note that we should compute the key value from the virtual key code + // because they may be mapped to alphabets, but they should be treated as + // Alt + [0-9] even by web apps. + // However, we shouldn't touch the key value if given virtual key code is + // not a printable key because it may be synthesized by 3rd party utility + // or just NumLock is unlocked and user tries to use shortcut key. In the + // latter case, we cannot solve the conflict issue with Alt+foo shortcut key + // and inputting a Unicode scalar value like reported to bug 1606655, though, + // I have no better idea. Perhaps, `Alt` shouldn't be used for shortcut key + // combination on Windows. + if (aNativeKey.MaybeTypingUnicodeScalarValue() && + KeyboardLayout::IsPrintableCharKey(aNativeKey.mVirtualKeyCode)) { + // If the key code value is mapped to a Numpad key, let's compute the key + // value with it. This is same behavior as Chrome. In strictly speaking, + // I think that the else block's computation is better because it seems + // that Windows does not refer virtual key code value, but we should avoid + // web-compat issues. + char16_t num = '0'; + if (aNativeKey.mVirtualKeyCode >= VK_NUMPAD0 && + aNativeKey.mVirtualKeyCode <= VK_NUMPAD9) { + num = '0' + aNativeKey.mVirtualKeyCode - VK_NUMPAD0; + } + // Otherwise, let's use fake key value for making never match with + // mnemonic. + else { + switch (aNativeKey.mScanCode) { + case 0x0052: // Numpad0 + num = '0'; + break; + case 0x004F: // Numpad1 + num = '1'; + break; + case 0x0050: // Numpad2 + num = '2'; + break; + case 0x0051: // Numpad3 + num = '3'; + break; + case 0x004B: // Numpad4 + num = '4'; + break; + case 0x004C: // Numpad5 + num = '5'; + break; + case 0x004D: // Numpad6 + num = '6'; + break; + case 0x0047: // Numpad7 + num = '7'; + break; + case 0x0048: // Numpad8 + num = '8'; + break; + case 0x0049: // Numpad9 + num = '9'; + break; + default: + MOZ_ASSERT_UNREACHABLE( + "IsTypingUnicodeScalarValue() must have returned true for wrong " + "scancode"); + break; + } + } + aNativeKey.mCommittedCharsAndModifiers.Append(num, + aNativeKey.GetModifiers()); + aNativeKey.mKeyNameIndex = KEY_NAME_INDEX_USE_STRING; + return; + } + + // When it's followed by non-dead char message(s) for printable character(s), + // aNativeKey should dispatch eKeyPress events for them rather than + // information from keyboard layout because respecting WM_(SYS)CHAR messages + // guarantees that we can always input characters which is expected by + // the user even if the user uses odd keyboard layout. + // Or, when it was followed by non-dead char message for a printable character + // but it's gone at removing the message from the queue, let's treat it + // as a key inputting empty string. + if (aNativeKey.IsFollowedByPrintableCharOrSysCharMessage() || + aNativeKey.mCharMessageHasGone) { + MOZ_ASSERT(!aNativeKey.IsCharMessage(aNativeKey.mMsg)); + if (aNativeKey.IsFollowedByPrintableCharOrSysCharMessage()) { + // Initialize mCommittedCharsAndModifiers with following char messages. + aNativeKey.InitCommittedCharsAndModifiersWithFollowingCharMessages(); + MOZ_ASSERT(!aNativeKey.mCommittedCharsAndModifiers.IsEmpty()); + + // Currently, we are doing a ugly hack to keypress events to cause + // inputting character even if Ctrl or Alt key is pressed, that is, we + // remove Ctrl and Alt modifier state from keypress event. However, for + // example, Ctrl+Space which causes ' ' of WM_CHAR message never causes + // keypress event whose ctrlKey is true. For preventing this problem, + // we should mark as not removable if Ctrl or Alt key does not cause + // changing inputting character. + if (IsPrintableCharKey(aNativeKey.mOriginalVirtualKeyCode) && + (aNativeKey.IsControl() ^ aNativeKey.IsAlt())) { + ModifierKeyState state = aNativeKey.ModifierKeyStateRef(); + state.Unset(MODIFIER_ALT | MODIFIER_CONTROL); + UniCharsAndModifiers charsWithoutModifier = + GetUniCharsAndModifiers(aNativeKey.GenericVirtualKeyCode(), state); + aNativeKey.mCanIgnoreModifierStateAtKeyPress = + !charsWithoutModifier.UniCharsEqual( + aNativeKey.mCommittedCharsAndModifiers); + } + } else { + aNativeKey.mCommittedCharsAndModifiers.Clear(); + } + aNativeKey.mKeyNameIndex = KEY_NAME_INDEX_USE_STRING; + + // If it's not in dead key sequence, we don't need to do anymore here. + if (!IsInDeadKeySequence()) { + return; + } + + // If it's in dead key sequence and dead char is inputted as is, we need to + // set the previous modifier state which is stored when preceding dead key + // is pressed. + UniCharsAndModifiers deadChars = GetDeadUniCharsAndModifiers(); + aNativeKey.mCommittedCharsAndModifiers.OverwriteModifiersIfBeginsWith( + deadChars); + // Finish the dead key sequence. + DeactivateDeadKeyState(); + return; + } + + // If it's a dead key, aNativeKey will be initialized by + // MaybeInitNativeKeyAsDeadKey(). + if (MaybeInitNativeKeyAsDeadKey(aNativeKey)) { + return; + } + + // If the key is not a usual printable key, KeyboardLayout class assume that + // it's not cause dead char nor printable char. Therefore, there are nothing + // to do here fore such keys (e.g., function keys). + // However, this should keep dead key state even if non-printable key is + // pressed during a dead key sequence. + if (!IsPrintableCharKey(aNativeKey.mOriginalVirtualKeyCode)) { + return; + } + + MOZ_ASSERT(aNativeKey.mOriginalVirtualKeyCode != VK_PACKET, + "At handling VK_PACKET, we shouldn't refer keyboard layout"); + MOZ_ASSERT( + aNativeKey.mKeyNameIndex == KEY_NAME_INDEX_USE_STRING, + "Printable key's key name index must be KEY_NAME_INDEX_USE_STRING"); + + // If it's in dead key handling and the pressed key causes a composite + // character, aNativeKey will be initialized by + // MaybeInitNativeKeyWithCompositeChar(). + if (MaybeInitNativeKeyWithCompositeChar(aNativeKey)) { + return; + } + + UniCharsAndModifiers baseChars = GetUniCharsAndModifiers(aNativeKey); + + // If the key press isn't related to any dead keys, initialize aNativeKey + // with the characters which should be caused by the key. + if (!IsInDeadKeySequence()) { + aNativeKey.mCommittedCharsAndModifiers = baseChars; + return; + } + + // If the key doesn't cause a composite character with preceding dead key, + // initialize aNativeKey with the dead-key character followed by current + // key's character. + UniCharsAndModifiers deadChars = GetDeadUniCharsAndModifiers(); + aNativeKey.mCommittedCharsAndModifiers = deadChars + baseChars; + if (aNativeKey.IsKeyDownMessage()) { + DeactivateDeadKeyState(); + } +} + +bool KeyboardLayout::MaybeInitNativeKeyAsDeadKey(NativeKey& aNativeKey) { + // Only when it's not in dead key sequence, we can trust IsDeadKey() result. + if (!IsInDeadKeySequence() && !IsDeadKey(aNativeKey)) { + return false; + } + + // When keydown message is followed by a dead char message, it should be + // initialized as dead key. + bool isDeadKeyDownEvent = + aNativeKey.IsKeyDownMessage() && aNativeKey.IsFollowedByDeadCharMessage(); + + // When keyup message is received, let's check if it's one of preceding + // dead keys because keydown message order and keyup message order may be + // different. + bool isDeadKeyUpEvent = + !aNativeKey.IsKeyDownMessage() && + mActiveDeadKeys.Contains(aNativeKey.GenericVirtualKeyCode()); + + if (isDeadKeyDownEvent || isDeadKeyUpEvent) { + ActivateDeadKeyState(aNativeKey); + // Any dead key events don't generate characters. So, a dead key should + // cause only keydown event and keyup event whose KeyboardEvent.key + // values are "Dead". + aNativeKey.mCommittedCharsAndModifiers.Clear(); + aNativeKey.mKeyNameIndex = KEY_NAME_INDEX_Dead; + return true; + } + + // 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 (!IsInDeadKeySequence()) { + aNativeKey.mCommittedCharsAndModifiers = + GetUniCharsAndModifiers(aNativeKey); + return true; + } + + // When non-printable key event comes during a dead key sequence, that must + // be a modifier key event. So, such events shouldn't be handled as a part + // of the dead key sequence. + if (!IsDeadKey(aNativeKey)) { + return false; + } + + // FYI: Following code may run when the user doesn't input text actually + // but the key sequence is a dead key sequence. For example, + // ` -> Ctrl+` with Spanish keyboard layout. Let's keep using this + // complicated code for now because this runs really rarely. + + // Dead key followed by another dead key may cause a composed character + // (e.g., "Russian - Mnemonic" keyboard layout's 's' -> 'c'). + if (MaybeInitNativeKeyWithCompositeChar(aNativeKey)) { + return true; + } + + // Otherwise, dead key followed by another dead key causes inputting both + // character. + UniCharsAndModifiers prevDeadChars = GetDeadUniCharsAndModifiers(); + UniCharsAndModifiers newChars = GetUniCharsAndModifiers(aNativeKey); + // But keypress events should be fired for each committed character. + aNativeKey.mCommittedCharsAndModifiers = prevDeadChars + newChars; + if (aNativeKey.IsKeyDownMessage()) { + DeactivateDeadKeyState(); + } + return true; +} + +bool KeyboardLayout::MaybeInitNativeKeyWithCompositeChar( + NativeKey& aNativeKey) { + if (!IsInDeadKeySequence()) { + return false; + } + + if (NS_WARN_IF(!IsPrintableCharKey(aNativeKey.mOriginalVirtualKeyCode))) { + return false; + } + + UniCharsAndModifiers baseChars = GetUniCharsAndModifiers(aNativeKey); + if (baseChars.IsEmpty() || !baseChars.CharAt(0)) { + return false; + } + + char16_t compositeChar = GetCompositeChar(baseChars.CharAt(0)); + if (!compositeChar) { + return false; + } + + // Active dead-key and base character does produce exactly one composite + // character. + aNativeKey.mCommittedCharsAndModifiers.Append(compositeChar, + baseChars.ModifiersAt(0)); + if (aNativeKey.IsKeyDownMessage()) { + DeactivateDeadKeyState(); + } + return true; +} + +UniCharsAndModifiers KeyboardLayout::GetUniCharsAndModifiers( + uint8_t aVirtualKey, VirtualKey::ShiftState aShiftState) const { + UniCharsAndModifiers result; + int32_t key = GetKeyIndex(aVirtualKey); + if (key < 0) { + return result; + } + return mVirtualKeys[key].GetUniChars(aShiftState); +} + +UniCharsAndModifiers KeyboardLayout::GetDeadUniCharsAndModifiers() const { + MOZ_RELEASE_ASSERT(mActiveDeadKeys.Length() == mDeadKeyShiftStates.Length()); + + if (NS_WARN_IF(mActiveDeadKeys.IsEmpty())) { + return UniCharsAndModifiers(); + } + + UniCharsAndModifiers result; + for (size_t i = 0; i < mActiveDeadKeys.Length(); ++i) { + result += + GetUniCharsAndModifiers(mActiveDeadKeys[i], mDeadKeyShiftStates[i]); + } + return result; +} + +char16_t KeyboardLayout::GetCompositeChar(char16_t aBaseChar) const { + if (NS_WARN_IF(mActiveDeadKeys.IsEmpty())) { + return 0; + } + // XXX Currently, we don't support computing a composite character with + // two or more dead keys since it needs big table for supporting + // long chained dead keys. However, this should be a minor bug + // because this runs only when the latest keydown event does not cause + // WM_(SYS)CHAR messages. So, when user wants to input a character, + // this path never runs. + if (mActiveDeadKeys.Length() > 1) { + return 0; + } + int32_t key = GetKeyIndex(mActiveDeadKeys[0]); + if (key < 0) { + return 0; + } + return mVirtualKeys[key].GetCompositeChar(mDeadKeyShiftStates[0], aBaseChar); +} + +static bool IsValidKeyboardLayoutsChild(const nsAString& aChildName) { + if (aChildName.Length() != 8) { + return false; + } + for (size_t i = 0; i < aChildName.Length(); i++) { + if ((aChildName[i] >= '0' && aChildName[i] <= '9') || + (aChildName[i] >= 'a' && aChildName[i] <= 'f') || + (aChildName[i] >= 'A' && aChildName[i] <= 'F')) { + continue; + } + return false; + } + return true; +} + +// static +nsCString KeyboardLayout::GetLayoutName(HKL aLayout) { + constexpr auto kKeyboardLayouts = + u"SYSTEM\\CurrentControlSet\\Control\\Keyboard Layouts\\"_ns; + uint16_t language = reinterpret_cast<uintptr_t>(aLayout) & 0xFFFF; + uint16_t layout = (reinterpret_cast<uintptr_t>(aLayout) >> 16) & 0xFFFF; + // If the layout is less than 0xA000XXXX (normal keyboard layout for the + // language) or 0xEYYYXXXX (IMM-IME), we can retrieve its name simply. + if (layout < 0xA000 || (layout & 0xF000) == 0xE000) { + nsAutoString key(kKeyboardLayouts); + key.AppendPrintf("%08" PRIXPTR, layout < 0xA000 + ? layout + : reinterpret_cast<uintptr_t>(aLayout)); + wchar_t buf[256]; + if (NS_WARN_IF(!WinRegistry::GetString( + HKEY_LOCAL_MACHINE, key, u"Layout Text"_ns, buf, + WinRegistry::kLegacyWinUtilsStringFlags))) { + return "No name or too long name"_ns; + } + return NS_ConvertUTF16toUTF8(buf); + } + + if (NS_WARN_IF((layout & 0xF000) != 0xF000)) { + nsCString result; + result.AppendPrintf("Odd HKL: 0x%08" PRIXPTR, + reinterpret_cast<uintptr_t>(aLayout)); + return result; + } + + // Otherwise, we need to walk the registry under "Keyboard Layouts". + WinRegistry::Key regKey(HKEY_LOCAL_MACHINE, kKeyboardLayouts, + WinRegistry::KeyMode::Read); + if (NS_WARN_IF(!regKey)) { + return ""_ns; + } + uint32_t childCount = regKey.GetChildCount(); + if (NS_WARN_IF(!childCount)) { + return ""_ns; + } + for (uint32_t i = 0; i < childCount; i++) { + nsAutoString childName; + if (NS_WARN_IF(!regKey.GetChildName(i, childName)) || + !IsValidKeyboardLayoutsChild(childName)) { + continue; + } + nsresult rv = NS_OK; + uint32_t childNum = static_cast<uint32_t>(childName.ToInteger64(&rv, 16)); + if (NS_WARN_IF(NS_FAILED(rv))) { + continue; + } + // Ignore normal keyboard layouts for each language. + if (childNum <= 0xFFFF) { + continue; + } + // If it doesn't start with 'A' nor 'a', language should be matched. + if ((childNum & 0xFFFF) != language && + (childNum & 0xF0000000) != 0xA0000000) { + continue; + } + // Then, the child should have "Layout Id" which is "YYY" of 0xFYYYXXXX. + nsAutoString key(kKeyboardLayouts); + key += childName; + WinRegistry::Key regKey(HKEY_LOCAL_MACHINE, key, + WinRegistry::KeyMode::QueryValue); + if (NS_WARN_IF(!regKey)) { + continue; + } + wchar_t buf[256]; + if (NS_WARN_IF(!regKey.GetValueAsString( + u"Layout Id"_ns, buf, WinRegistry::kLegacyWinUtilsStringFlags))) { + continue; + } + uint16_t layoutId = wcstol(buf, nullptr, 16); + if (layoutId != (layout & 0x0FFF)) { + continue; + } + if (NS_WARN_IF(!regKey.GetValueAsString( + u"Layout Text"_ns, buf, WinRegistry::kLegacyWinUtilsStringFlags))) { + continue; + } + return NS_ConvertUTF16toUTF8(buf); + } + return ""_ns; +} + +void KeyboardLayout::LoadLayout(HKL aLayout) { + mIsPendingToRestoreKeyboardLayout = false; + + if (mKeyboardLayout == aLayout) { + return; + } + + mKeyboardLayout = aLayout; + mHasAltGr = false; + + MOZ_LOG(gKeyLog, LogLevel::Info, + ("KeyboardLayout::LoadLayout(aLayout=0x%p (%s))", aLayout, + GetLayoutName(aLayout).get())); + + 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; + + mActiveDeadKeys.Clear(); + mDeadKeyShiftStates.Clear(); + + 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); + bool isAltGr = VirtualKey::IsAltGrIndex(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]); + + MOZ_LOG(gKeyLog, LogLevel::Verbose, + (" %s (%d): DeadChar(%s, %s) (ret=%d)", + kVirtualKeyName[virtualKey], vki, + GetShiftStateName(shiftState).get(), + GetCharacterCodeNames(deadChar, 1).get(), ret)); + } else { + if (ret == 1) { + // dead-key can pair only with exactly one base character. + shiftStatesWithBaseChars |= (1 << shiftState); + } + mVirtualKeys[vki].SetNormalChars(shiftState, uniChars, ret); + MOZ_LOG(gKeyLog, LogLevel::Verbose, + (" %s (%d): NormalChar(%s, %s) (ret=%d)", + kVirtualKeyName[virtualKey], vki, + GetShiftStateName(shiftState).get(), + GetCharacterCodeNames(uniChars, ret).get(), ret)); + } + + // If the key inputs at least one character with AltGr modifier, + // check if AltGr changes inputting character. If it does, mark + // this keyboard layout has AltGr modifier actually. + if (!mHasAltGr && ret > 0 && isAltGr && + mVirtualKeys[vki].IsChangedByAltGr(shiftState)) { + mHasAltGr = true; + MOZ_LOG(gKeyLog, LogLevel::Info, + (" Found a key (%s) changed by AltGr: %s -> %s (%s) (ret=%d)", + kVirtualKeyName[virtualKey], + GetCharacterCodeNames( + mVirtualKeys[vki].GetNativeUniChars( + shiftState - VirtualKey::ShiftStateIndex::eAltGr)) + .get(), + GetCharacterCodeNames( + mVirtualKeys[vki].GetNativeUniChars(shiftState)) + .get(), + GetShiftStateName(shiftState).get(), 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)) { + AutoTArray<DeadKeyEntry, 256> deadKeyArray; + uint32_t n = GetDeadKeyCombinations( + virtualKey, kbdState, shiftStatesWithBaseChars, deadKeyArray); + const DeadKeyTable* dkt = + mVirtualKeys[vki].MatchingDeadKeyTable(deadKeyArray.Elements(), n); + if (!dkt) { + dkt = AddDeadKeyTable(deadKeyArray.Elements(), n); + } + mVirtualKeys[vki].AttachDeadKeyTable(shiftState, dkt); + } + } + } + + ::SetKeyboardState(originalKbdState); + + if (MOZ_LOG_TEST(gKeyLog, LogLevel::Verbose)) { + static const UINT kExtendedScanCode[] = {0x0000, 0xE000}; + static const UINT kMapType = MAPVK_VSC_TO_VK_EX; + MOZ_LOG(gKeyLog, LogLevel::Verbose, + ("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); + MOZ_LOG(gKeyLog, LogLevel::Verbose, + ("0x%04X, %s", scanCode, kVirtualKeyName[virtualKeyCode])); + } + } + } + + MOZ_LOG(gKeyLog, LogLevel::Info, + (" AltGr key is %s in %s", mHasAltGr ? "found" : "not found", + GetLayoutName(aLayout).get())); +} + +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]; +} + +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::ActivateDeadKeyState(const NativeKey& aNativeKey) { + // Dead-key state should be activated at keydown. + if (!aNativeKey.IsKeyDownMessage()) { + return; + } + + mActiveDeadKeys.AppendElement(aNativeKey.mOriginalVirtualKeyCode); + mDeadKeyShiftStates.AppendElement(aNativeKey.GetShiftState()); +} + +void KeyboardLayout::DeactivateDeadKeyState() { + if (mActiveDeadKeys.IsEmpty()) { + return; + } + + BYTE kbdState[256]; + memset(kbdState, 0, sizeof(kbdState)); + + // Assume that the last dead key can finish dead key sequence. + VirtualKey::FillKbdState(kbdState, mDeadKeyShiftStates.LastElement()); + EnsureDeadKeyActive(false, mActiveDeadKeys.LastElement(), kbdState); + mActiveDeadKeys.Clear(); + mDeadKeyShiftStates.Clear(); +} + +bool KeyboardLayout::AddDeadKeyEntry(char16_t aBaseChar, + char16_t aCompositeChar, + nsTArray<DeadKeyEntry>& aDeadKeyArray) { + auto dke = DeadKeyEntry(aBaseChar, aCompositeChar); + for (uint32_t index = 0; index < aDeadKeyArray.Length(); index++) { + if (aDeadKeyArray[index] == dke) { + return false; + } + } + + aDeadKeyArray.AppendElement(dke); + + return true; +} + +uint32_t KeyboardLayout::GetDeadKeyCombinations( + uint8_t aDeadKey, const PBYTE aDeadKeyKbdState, + uint16_t aShiftStatesWithBaseChars, nsTArray<DeadKeyEntry>& aDeadKeyArray) { + 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).Length() == 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: { + char16_t baseChars[5]; + ret = ::ToUnicodeEx(virtualKey, 0, kbdState, (LPWSTR)baseChars, + ArrayLength(baseChars), 0, mKeyboardLayout); + if (entries < aDeadKeyArray.Capacity()) { + switch (ret) { + 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. + if (AddDeadKeyEntry(baseChars[0], compositeChars[0], + aDeadKeyArray)) { + entries++; + } + deadKeyActive = false; + break; + case -1: { + // If pressing another dead-key produces different character, + // we should register the dead-key entry with first character + // produced by current key. + + // First inactivate the dead-key state completely. + deadKeyActive = + EnsureDeadKeyActive(false, aDeadKey, aDeadKeyKbdState); + if (NS_WARN_IF(deadKeyActive)) { + MOZ_LOG(gKeyLog, LogLevel::Error, + (" failed to deactivating the dead-key state...")); + break; + } + for (int32_t i = 0; i < 5; ++i) { + ret = ::ToUnicodeEx( + virtualKey, 0, kbdState, (LPWSTR)baseChars, + ArrayLength(baseChars), 0, mKeyboardLayout); + if (ret >= 0) { + break; + } + } + if (ret > 0 && + AddDeadKeyEntry(baseChars[0], compositeChars[0], + aDeadKeyArray)) { + entries++; + } + // Inactivate dead-key state for current virtual keycode. + EnsureDeadKeyActive(false, virtualKey, kbdState); + break; + } + default: + NS_WARNING("File a bug for this dead-key handling!"); + deadKeyActive = false; + break; + } + } + MOZ_LOG( + gKeyLog, LogLevel::Verbose, + (" %s -> %s (%d): DeadKeyEntry(%s, %s) (ret=%d)", + kVirtualKeyName[aDeadKey], kVirtualKeyName[virtualKey], vki, + GetCharacterCodeNames(compositeChars, 1).get(), + ret <= 0 + ? "''" + : GetCharacterCodeNames(baseChars, std::min(ret, 5)).get(), + ret)); + 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; + MOZ_LOG( + gKeyLog, LogLevel::Verbose, + (" %s -> %s (%d): Unsupport dead key type(%s) (ret=%d)", + kVirtualKeyName[aDeadKey], kVirtualKeyName[virtualKey], vki, + ret <= 0 + ? "''" + : GetCharacterCodeNames(compositeChars, std::min(ret, 5)) + .get(), + ret)); + break; + } + } + } + } + + if (deadKeyActive) { + deadKeyActive = EnsureDeadKeyActive(false, aDeadKey, aDeadKeyKbdState); + } + + aDeadKeyArray.Sort(); + + 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; + + case VK_LSHIFT: + case VK_RSHIFT: + return NS_VK_SHIFT; + + case VK_LCONTROL: + case VK_RCONTROL: + return NS_VK_CONTROL; + + // Note that even if the key is AltGr, we should return NS_VK_ALT for + // compatibility with both older Gecko and the other browsers. + case VK_LMENU: + case VK_RMENU: + return NS_VK_ALT; + + // 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_PREV_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.Length() != 1 || uniChars.CharAt(0) < ' ' || + uniChars.CharAt(0) > 0x7F) { + modKeyState.Set(MODIFIER_SHIFT); + uniChars = GetUniCharsAndModifiers(aNativeKeyCode, modKeyState); + if (uniChars.Length() != 1 || uniChars.CharAt(0) < ' ' || + uniChars.CharAt(0) > 0x7F) { + // In this case, we've returned 0 in this case for long time because + // we decided that we should avoid setting same keyCode value to 2 or + // more keys since active keyboard layout may have a key to input the + // punctuation with different key. However, setting keyCode to 0 + // makes some web applications which are aware of neither + // KeyboardEvent.key nor KeyboardEvent.code not work with Firefox + // when user selects non-ASCII capable keyboard layout such as + // Russian and Thai layout. So, let's decide keyCode value with + // major keyboard layout's key which causes the OEM keycode. + // Actually, this maps same keyCode value to 2 keys on Russian + // keyboard layout. "Period" key causes VK_OEM_PERIOD but inputs + // Yu of Cyrillic and "Slash" key causes VK_OEM_2 (same as US + // keyboard layout) but inputs "." (period of ASCII). Therefore, + // we return DOM_VK_PERIOD which is same as VK_OEM_PERIOD for + // "Period" key. On the other hand, we use same keyCode value for + // "Slash" key too because it inputs ".". + CodeNameIndex code; + switch (aNativeKeyCode) { + case VK_OEM_1: + code = CODE_NAME_INDEX_Semicolon; + break; + case VK_OEM_PLUS: + code = CODE_NAME_INDEX_Equal; + break; + case VK_OEM_COMMA: + code = CODE_NAME_INDEX_Comma; + break; + case VK_OEM_MINUS: + code = CODE_NAME_INDEX_Minus; + break; + case VK_OEM_PERIOD: + code = CODE_NAME_INDEX_Period; + break; + case VK_OEM_2: + code = CODE_NAME_INDEX_Slash; + break; + case VK_OEM_3: + code = CODE_NAME_INDEX_Backquote; + break; + case VK_OEM_4: + code = CODE_NAME_INDEX_BracketLeft; + break; + case VK_OEM_5: + code = CODE_NAME_INDEX_Backslash; + break; + case VK_OEM_6: + code = CODE_NAME_INDEX_BracketRight; + break; + case VK_OEM_7: + code = CODE_NAME_INDEX_Quote; + break; + case VK_OEM_8: + // Use keyCode value for "Backquote" key on UK keyboard layout. + code = CODE_NAME_INDEX_Backquote; + break; + case VK_OEM_102: + // Use keyCode value for "IntlBackslash" key. + code = CODE_NAME_INDEX_IntlBackslash; + break; + case VK_ABNT_C1: // "/" of ABNT. + // Use keyCode value for "IntlBackslash" key on ABNT keyboard + // layout. + code = CODE_NAME_INDEX_IntlBackslash; + break; + default: + MOZ_ASSERT_UNREACHABLE("Handle all OEM keycode values"); + return 0; + } + return WidgetKeyboardEvent::GetFallbackKeyCodeOfPunctuationKey(code); + } + } + return WidgetUtils::ComputeKeyCodeFromChar(uniChars.CharAt(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 NS_VK_PROCESSKEY; + // 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) || aVirtualKey == VK_PACKET) { + return KEY_NAME_INDEX_USE_STRING; + } + + // If the keyboard layout has AltGr and AltRight key is pressed, + // return AltGraph. + if (aVirtualKey == VK_RMENU && HasAltGr()) { + return KEY_NAME_INDEX_AltGraph; + } + + 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 + + default: + break; + } + + HKL layout = KeyboardLayout::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 + + 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 + + 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_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( + nsWindow* 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); + + bool isAltGrKeyPress = false; + if (aModifierFlags & nsIWidget::ALTGRAPH) { + if (!HasAltGr()) { + return NS_ERROR_INVALID_ARG; + } + // AltGr emulates ControlLeft key press and AltRight key press. + // So, we should remove those flags from aModifierFlags before + // calling WinUtils::SetupKeyModifiersSequence() to create correct + // key sequence. + // FYI: We don't support both ControlLeft and AltRight (AltGr) are + // pressed at the same time unless synthesizing key is + // VK_LCONTROL. + aModifierFlags &= ~(nsIWidget::CTRL_L | nsIWidget::ALT_R); + } + + uint8_t argumentKeySpecific = 0; + switch (aNativeKeyCode & 0xFF) { + case VK_SHIFT: + aModifierFlags &= ~(nsIWidget::SHIFT_L | nsIWidget::SHIFT_R); + argumentKeySpecific = VK_LSHIFT; + break; + case VK_LSHIFT: + aModifierFlags &= ~nsIWidget::SHIFT_L; + argumentKeySpecific = aNativeKeyCode & 0xFF; + aNativeKeyCode = (aNativeKeyCode & 0xFFFF0000) | VK_SHIFT; + break; + case VK_RSHIFT: + aModifierFlags &= ~nsIWidget::SHIFT_R; + argumentKeySpecific = aNativeKeyCode & 0xFF; + aNativeKeyCode = (aNativeKeyCode & 0xFFFF0000) | 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 & 0xFF; + aNativeKeyCode = (aNativeKeyCode & 0xFFFF0000) | VK_CONTROL; + break; + case VK_RCONTROL: + aModifierFlags &= ~nsIWidget::CTRL_R; + argumentKeySpecific = aNativeKeyCode & 0xFF; + aNativeKeyCode = (aNativeKeyCode & 0xFFFF0000) | 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 & 0xFF; + aNativeKeyCode = (aNativeKeyCode & 0xFFFF0000) | VK_MENU; + break; + case VK_RMENU: + aModifierFlags &= ~(nsIWidget::ALT_R | nsIWidget::ALTGRAPH); + argumentKeySpecific = aNativeKeyCode & 0xFF; + aNativeKeyCode = (aNativeKeyCode & 0xFFFF0000) | VK_MENU; + // If AltRight key is AltGr in the keyboard layout, let's use + // SetupKeyModifiersSequence() to emulate the native behavior + // since the same event order between keydown and keyup makes + // the following code complicated. + if (HasAltGr()) { + isAltGrKeyPress = true; + aModifierFlags &= ~nsIWidget::CTRL_L; + aModifierFlags |= nsIWidget::ALTGRAPH; + } + break; + case VK_CAPITAL: + aModifierFlags &= ~nsIWidget::CAPS_LOCK; + argumentKeySpecific = VK_CAPITAL; + break; + case VK_NUMLOCK: + aModifierFlags &= ~nsIWidget::NUM_LOCK; + argumentKeySpecific = VK_NUMLOCK; + break; + } + + AutoTArray<KeyPair, 10> keySequence; + WinUtils::SetupKeyModifiersSequence(&keySequence, aModifierFlags, WM_KEYDOWN); + if (!isAltGrKeyPress) { + keySequence.AppendElement(KeyPair(aNativeKeyCode, argumentKeySpecific)); + } + + // Simulate the pressing of each modifier key and then the real key + // FYI: Each NativeKey instance here doesn't need to override keyboard layout + // since this method overrides and restores the keyboard layout. + for (uint32_t i = 0; i < keySequence.Length(); ++i) { + uint8_t key = keySequence[i].mGeneral; + uint8_t keySpecific = keySequence[i].mSpecific; + uint16_t scanCode = keySequence[i].mScanCode; + kbdState[key] = 0x81; // key is down and toggled on if appropriate + if (keySpecific) { + kbdState[keySpecific] = 0x81; + } + ::SetKeyboardState(kbdState); + ModifierKeyState modKeyState; + // If scan code isn't specified explicitly, let's compute it with current + // keyboard layout. + if (!scanCode) { + scanCode = + ComputeScanCodeForVirtualKeyCode(keySpecific ? keySpecific : key); + } + LPARAM lParam = static_cast<LPARAM>(scanCode << 16); + // If the scan code is for an extended key, set extended key flag. + if ((scanCode & 0xFF00) == 0xE000) { + lParam |= 0x1000000; + } + // When AltGr key is pressed, both ControlLeft and AltRight cause + // WM_KEYDOWN messages. + bool makeSysKeyMsg = + !(aModifierFlags & nsIWidget::ALTGRAPH) && IsSysKey(key, modKeyState); + MSG keyDownMsg = + WinUtils::InitMSG(makeSysKeyMsg ? WM_SYSKEYDOWN : 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 { + AutoTArray<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->mIsSysKey = makeSysKeyMsg; + fakeCharMsg->mIsDeadKey = makeDeadCharMsg; + } + NativeKey nativeKey(aWidget, keyDownMsg, modKeyState, 0, &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(); + } + } + + keySequence.Clear(); + if (!isAltGrKeyPress) { + keySequence.AppendElement(KeyPair(aNativeKeyCode, argumentKeySpecific)); + } + WinUtils::SetupKeyModifiersSequence(&keySequence, aModifierFlags, WM_KEYUP); + for (uint32_t i = 0; i < keySequence.Length(); ++i) { + uint8_t key = keySequence[i].mGeneral; + uint8_t keySpecific = keySequence[i].mSpecific; + uint16_t scanCode = keySequence[i].mScanCode; + kbdState[key] = 0; // key is up and toggled off if appropriate + if (keySpecific) { + kbdState[keySpecific] = 0; + } + ::SetKeyboardState(kbdState); + ModifierKeyState modKeyState; + // If scan code isn't specified explicitly, let's compute it with current + // keyboard layout. + if (!scanCode) { + scanCode = + ComputeScanCodeForVirtualKeyCode(keySpecific ? keySpecific : key); + } + LPARAM lParam = static_cast<LPARAM>(scanCode << 16); + // If the scan code is for an extended key, set extended key flag. + if ((scanCode & 0xFF00) == 0xE000) { + lParam |= 0x1000000; + } + // Don't use WM_SYSKEYUP for Alt keyup. + // NOTE: When AltGr was pressed, ControlLeft causes WM_SYSKEYUP normally. + bool makeSysKeyMsg = IsSysKey(key, modKeyState) && key != VK_MENU; + MSG keyUpMsg = WinUtils::InitMSG(makeSysKeyMsg ? WM_SYSKEYUP : 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 |