Quellcode-Bibliothek TSFTextStore.cpp Sprache: C

/* -*- 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/. */

#define INPUTSCOPE_INIT_GUID
#define TEXTATTRS_INIT_GUID
#include "TSFTextStore.h"

#include "IMMHandler.h"
#include "KeyboardLayout.h"
#include "WinIMEHandler.h"
#include "WinUtils.h"
#include "mozilla/Assertions.h"
#include "mozilla/AutoRestore.h"
#include "mozilla/Logging.h"
#include "mozilla/StaticPrefs_intl.h"
#include "mozilla/glean/WidgetWindowsMetrics.h"
#include "mozilla/TextEventDispatcher.h"
#include "mozilla/TextEvents.h"
#include "mozilla/ToString.h"
#include "mozilla/WindowsVersion.h"
#include "mozilla/widget/WinRegistry.h"
#include "nsWindow.h"
#include "nsPrintfCString.h"

#include <algorithm>
#include <comutil.h>  // for _bstr_t
#include <oleauto.h>  // for SysAllocString
#include <olectl.h>

// For collecting other people's log, tell `MOZ_LOG=IMEHandler:4,sync`
// rather than `MOZ_LOG=IMEHandler:5,sync` since using `5` may create too
// big file.
// Therefore you shouldn't use `LogLevel::Verbose` for logging usual behavior.
mozilla::LazyLogModule gIMELog("IMEHandler");

// TODO: GUID_PROP_URL has not been declared in the SDK yet.  We should drop the
//       `s` prefix after it's released by a new SDK and define it with #if.
static const GUID sGUID_PROP_URL = {
    0xd5138268,
    0xa1bf,
    0x4308,
    {0xbc, 0xbf, 0x2e, 0x73, 0x93, 0x98, 0xe2, 0x34}};

namespace mozilla {
namespace widget {

/**
* TSF related code should log its behavior even on release build especially
* in the interface methods.
*
* In interface methods, use LogLevel::Info.
* In internal methods, use LogLevel::Debug for logging normal behavior.
* For logging error, use LogLevel::Error.
*
* When an instance method is called, start with following text:
*   "0x%p TSFFoo::Bar(", the 0x%p should be the "this" of the nsFoo.
* after that, start with:
*   "0x%p   TSFFoo::Bar("
* In an internal method, start with following text:
*   "0x%p   TSFFoo::Bar("
* When a static method is called, start with following text:
*   "TSFFoo::Bar("
*/

enum class TextInputProcessorID {
  // Internal use only.  This won't be returned by TSFStaticSink::ActiveTIP().
  eNotComputed,

  // Not a TIP.  E.g., simple keyboard layout or IMM-IME.
  eNone,

  // Used for other TIPs, i.e., any TIPs which we don't support specifically.
  eUnknown,

  // TIP for Japanese.
  eMicrosoftIMEForJapanese,
  eMicrosoftOfficeIME2010ForJapanese,
  eGoogleJapaneseInput,
  eATOK2011,
  eATOK2012,
  eATOK2013,
  eATOK2014,
  eATOK2015,
  eATOK2016,
  eATOKUnknown,
  eJapanist10,

  // TIP for Traditional Chinese.
  eMicrosoftBopomofo,
  eMicrosoftChangJie,
  eMicrosoftPhonetic,
  eMicrosoftQuick,
  eMicrosoftNewChangJie,
  eMicrosoftNewPhonetic,
  eMicrosoftNewQuick,
  eFreeChangJie,

  // TIP for Simplified Chinese.
  eMicrosoftPinyin,
  eMicrosoftPinyinNewExperienceInputStyle,
  eMicrosoftWubi,

  // TIP for Korean.
  eMicrosoftIMEForKorean,
  eMicrosoftOldHangul,

  // Keyman Desktop, which can install various language keyboards.
  eKeymanDesktop,
};

static const char* GetBoolName(bool aBool) { return aBool ? "true" : "false"; }

static void HandleSeparator(nsCString& aDesc) {
  if (!aDesc.IsEmpty()) {
    aDesc.AppendLiteral(" | ");
  }
}

static const nsCString GetFindFlagName(DWORD aFindFlag) {
  nsCString description;
  if (!aFindFlag) {
    description.AppendLiteral("no flags (0)");
    return description;
  }
  if (aFindFlag & TS_ATTR_FIND_BACKWARDS) {
    description.AppendLiteral("TS_ATTR_FIND_BACKWARDS");
  }
  if (aFindFlag & TS_ATTR_FIND_WANT_OFFSET) {
    HandleSeparator(description);
    description.AppendLiteral("TS_ATTR_FIND_WANT_OFFSET");
  }
  if (aFindFlag & TS_ATTR_FIND_UPDATESTART) {
    HandleSeparator(description);
    description.AppendLiteral("TS_ATTR_FIND_UPDATESTART");
  }
  if (aFindFlag & TS_ATTR_FIND_WANT_VALUE) {
    HandleSeparator(description);
    description.AppendLiteral("TS_ATTR_FIND_WANT_VALUE");
  }
  if (aFindFlag & TS_ATTR_FIND_WANT_END) {
    HandleSeparator(description);
    description.AppendLiteral("TS_ATTR_FIND_WANT_END");
  }
  if (aFindFlag & TS_ATTR_FIND_HIDDEN) {
    HandleSeparator(description);
    description.AppendLiteral("TS_ATTR_FIND_HIDDEN");
  }
  if (description.IsEmpty()) {
    description.AppendLiteral("Unknown (");
    description.AppendInt(static_cast<uint32_t>(aFindFlag));
    description.Append(')');
  }
  return description;
}

class GetACPFromPointFlagName : public nsAutoCString {
public:
  explicit GetACPFromPointFlagName(DWORD aFlags) {
    if (!aFlags) {
      AppendLiteral("no flags (0)");
      return;
    }
    if (aFlags & GXFPF_ROUND_NEAREST) {
      AppendLiteral("GXFPF_ROUND_NEAREST");
      aFlags &= ~GXFPF_ROUND_NEAREST;
    }
    if (aFlags & GXFPF_NEAREST) {
      HandleSeparator(*this);
      AppendLiteral("GXFPF_NEAREST");
      aFlags &= ~GXFPF_NEAREST;
    }
    if (aFlags) {
      HandleSeparator(*this);
      AppendLiteral("Unknown(");
      AppendInt(static_cast<uint32_t>(aFlags));
      Append(')');
    }
  }
  virtual ~GetACPFromPointFlagName() {}
};

static const char* GetFocusChangeName(
    InputContextAction::FocusChange aFocusChange) {
  switch (aFocusChange) {
    case InputContextAction::FOCUS_NOT_CHANGED:
      return "FOCUS_NOT_CHANGED";
    case InputContextAction::GOT_FOCUS:
      return "GOT_FOCUS";
    case InputContextAction::LOST_FOCUS:
      return "LOST_FOCUS";
    case InputContextAction::MENU_GOT_PSEUDO_FOCUS:
      return "MENU_GOT_PSEUDO_FOCUS";
    case InputContextAction::MENU_LOST_PSEUDO_FOCUS:
      return "MENU_LOST_PSEUDO_FOCUS";
    case InputContextAction::WIDGET_CREATED:
      return "WIDGET_CREATED";
    default:
      return "Unknown";
  }
}

static nsCString GetCLSIDNameStr(REFCLSID aCLSID) {
  LPOLESTR str = nullptr;
  HRESULT hr = ::StringFromCLSID(aCLSID, &str);
  if (FAILED(hr) || !str || !str[0]) {
    return ""_ns;
  }

  nsCString result;
  result = NS_ConvertUTF16toUTF8(str);
  ::CoTaskMemFree(str);
  return result;
}

static nsCString GetGUIDNameStr(REFGUID aGUID) {
  OLECHAR str[40];
  int len = ::StringFromGUID2(aGUID, str, std::size(str));
  if (!len || !str[0]) {
    return ""_ns;
  }

  return NS_ConvertUTF16toUTF8(str);
}

static nsCString GetGUIDNameStrWithTable(REFGUID aGUID) {
#define RETURN_GUID_NAME(aNamedGUID)      \
  if (IsEqualGUID(aGUID, aNamedGUID)) {   \
    return nsLiteralCString(#aNamedGUID); \
  }

  RETURN_GUID_NAME(GUID_PROP_INPUTSCOPE)
  RETURN_GUID_NAME(sGUID_PROP_URL)
  RETURN_GUID_NAME(TSATTRID_OTHERS)
  RETURN_GUID_NAME(TSATTRID_Font)
  RETURN_GUID_NAME(TSATTRID_Font_FaceName)
  RETURN_GUID_NAME(TSATTRID_Font_SizePts)
  RETURN_GUID_NAME(TSATTRID_Font_Style)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Bold)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Italic)
  RETURN_GUID_NAME(TSATTRID_Font_Style_SmallCaps)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Capitalize)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Uppercase)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Lowercase)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Animation)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Animation_LasVegasLights)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Animation_BlinkingBackground)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Animation_SparkleText)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Animation_MarchingBlackAnts)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Animation_MarchingRedAnts)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Animation_Shimmer)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Animation_WipeDown)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Animation_WipeRight)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Emboss)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Engrave)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Hidden)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Kerning)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Outlined)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Position)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Protected)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Shadow)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Spacing)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Weight)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Height)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Underline)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Underline_Single)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Underline_Double)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Strikethrough)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Strikethrough_Single)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Strikethrough_Double)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Overline)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Overline_Single)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Overline_Double)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Blink)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Subscript)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Superscript)
  RETURN_GUID_NAME(TSATTRID_Font_Style_Color)
  RETURN_GUID_NAME(TSATTRID_Font_Style_BackgroundColor)
  RETURN_GUID_NAME(TSATTRID_Text)
  RETURN_GUID_NAME(TSATTRID_Text_VerticalWriting)
  RETURN_GUID_NAME(TSATTRID_Text_RightToLeft)
  RETURN_GUID_NAME(TSATTRID_Text_Orientation)
  RETURN_GUID_NAME(TSATTRID_Text_Language)
  RETURN_GUID_NAME(TSATTRID_Text_ReadOnly)
  RETURN_GUID_NAME(TSATTRID_Text_EmbeddedObject)
  RETURN_GUID_NAME(TSATTRID_Text_Alignment)
  RETURN_GUID_NAME(TSATTRID_Text_Alignment_Left)
  RETURN_GUID_NAME(TSATTRID_Text_Alignment_Right)
  RETURN_GUID_NAME(TSATTRID_Text_Alignment_Center)
  RETURN_GUID_NAME(TSATTRID_Text_Alignment_Justify)
  RETURN_GUID_NAME(TSATTRID_Text_Link)
  RETURN_GUID_NAME(TSATTRID_Text_Hyphenation)
  RETURN_GUID_NAME(TSATTRID_Text_Para)
  RETURN_GUID_NAME(TSATTRID_Text_Para_FirstLineIndent)
  RETURN_GUID_NAME(TSATTRID_Text_Para_LeftIndent)
  RETURN_GUID_NAME(TSATTRID_Text_Para_RightIndent)
  RETURN_GUID_NAME(TSATTRID_Text_Para_SpaceAfter)
  RETURN_GUID_NAME(TSATTRID_Text_Para_SpaceBefore)
  RETURN_GUID_NAME(TSATTRID_Text_Para_LineSpacing)
  RETURN_GUID_NAME(TSATTRID_Text_Para_LineSpacing_Single)
  RETURN_GUID_NAME(TSATTRID_Text_Para_LineSpacing_OnePtFive)
  RETURN_GUID_NAME(TSATTRID_Text_Para_LineSpacing_Double)
  RETURN_GUID_NAME(TSATTRID_Text_Para_LineSpacing_AtLeast)
  RETURN_GUID_NAME(TSATTRID_Text_Para_LineSpacing_Exactly)
  RETURN_GUID_NAME(TSATTRID_Text_Para_LineSpacing_Multiple)
  RETURN_GUID_NAME(TSATTRID_List)
  RETURN_GUID_NAME(TSATTRID_List_LevelIndel)
  RETURN_GUID_NAME(TSATTRID_List_Type)
  RETURN_GUID_NAME(TSATTRID_List_Type_Bullet)
  RETURN_GUID_NAME(TSATTRID_List_Type_Arabic)
  RETURN_GUID_NAME(TSATTRID_List_Type_LowerLetter)
  RETURN_GUID_NAME(TSATTRID_List_Type_UpperLetter)
  RETURN_GUID_NAME(TSATTRID_List_Type_LowerRoman)
  RETURN_GUID_NAME(TSATTRID_List_Type_UpperRoman)
  RETURN_GUID_NAME(TSATTRID_App)
  RETURN_GUID_NAME(TSATTRID_App_IncorrectSpelling)
  RETURN_GUID_NAME(TSATTRID_App_IncorrectGrammar)

#undef RETURN_GUID_NAME

  return GetGUIDNameStr(aGUID);
}

static nsCString GetRIIDNameStr(REFIID aRIID) {
  LPOLESTR str = nullptr;
  HRESULT hr = ::StringFromIID(aRIID, &str);
  if (FAILED(hr) || !str || !str[0]) {
    return ""_ns;
  }

  nsAutoString key(L"Interface\\");
  key += str;

  nsCString result;
  wchar_t buf[256];
  if (WinRegistry::GetString(HKEY_CLASSES_ROOT, key, u""_ns, buf,
                             WinRegistry::kLegacyWinUtilsStringFlags)) {
    result = NS_ConvertUTF16toUTF8(buf);
  } else {
    result = NS_ConvertUTF16toUTF8(str);
  }

  ::CoTaskMemFree(str);
  return result;
}

static const char* GetCommonReturnValueName(HRESULT aResult) {
  switch (aResult) {
    case S_OK:
      return "S_OK";
    case E_ABORT:
      return "E_ABORT";
    case E_ACCESSDENIED:
      return "E_ACCESSDENIED";
    case E_FAIL:
      return "E_FAIL";
    case E_HANDLE:
      return "E_HANDLE";
    case E_INVALIDARG:
      return "E_INVALIDARG";
    case E_NOINTERFACE:
      return "E_NOINTERFACE";
    case E_NOTIMPL:
      return "E_NOTIMPL";
    case E_OUTOFMEMORY:
      return "E_OUTOFMEMORY";
    case E_POINTER:
      return "E_POINTER";
    case E_UNEXPECTED:
      return "E_UNEXPECTED";
    default:
      return SUCCEEDED(aResult) ? "Succeeded" : "Failed";
  }
}

static const char* GetTextStoreReturnValueName(HRESULT aResult) {
  switch (aResult) {
    case TS_E_FORMAT:
      return "TS_E_FORMAT";
    case TS_E_INVALIDPOINT:
      return "TS_E_INVALIDPOINT";
    case TS_E_INVALIDPOS:
      return "TS_E_INVALIDPOS";
    case TS_E_NOINTERFACE:
      return "TS_E_NOINTERFACE";
    case TS_E_NOLAYOUT:
      return "TS_E_NOLAYOUT";
    case TS_E_NOLOCK:
      return "TS_E_NOLOCK";
    case TS_E_NOOBJECT:
      return "TS_E_NOOBJECT";
    case TS_E_NOSELECTION:
      return "TS_E_NOSELECTION";
    case TS_E_NOSERVICE:
      return "TS_E_NOSERVICE";
    case TS_E_READONLY:
      return "TS_E_READONLY";
    case TS_E_SYNCHRONOUS:
      return "TS_E_SYNCHRONOUS";
    case TS_S_ASYNC:
      return "TS_S_ASYNC";
    default:
      return GetCommonReturnValueName(aResult);
  }
}

static const nsCString GetSinkMaskNameStr(DWORD aSinkMask) {
  nsCString description;
  if (aSinkMask & TS_AS_TEXT_CHANGE) {
    description.AppendLiteral("TS_AS_TEXT_CHANGE");
  }
  if (aSinkMask & TS_AS_SEL_CHANGE) {
    HandleSeparator(description);
    description.AppendLiteral("TS_AS_SEL_CHANGE");
  }
  if (aSinkMask & TS_AS_LAYOUT_CHANGE) {
    HandleSeparator(description);
    description.AppendLiteral("TS_AS_LAYOUT_CHANGE");
  }
  if (aSinkMask & TS_AS_ATTR_CHANGE) {
    HandleSeparator(description);
    description.AppendLiteral("TS_AS_ATTR_CHANGE");
  }
  if (aSinkMask & TS_AS_STATUS_CHANGE) {
    HandleSeparator(description);
    description.AppendLiteral("TS_AS_STATUS_CHANGE");
  }
  if (description.IsEmpty()) {
    description.AppendLiteral("not-specified");
  }
  return description;
}

static const nsCString GetLockFlagNameStr(DWORD aLockFlags) {
  nsCString description;
  if ((aLockFlags & TS_LF_READWRITE) == TS_LF_READWRITE) {
    description.AppendLiteral("TS_LF_READWRITE");
  } else if (aLockFlags & TS_LF_READ) {
    description.AppendLiteral("TS_LF_READ");
  }
  if (aLockFlags & TS_LF_SYNC) {
    if (!description.IsEmpty()) {
      description.AppendLiteral(" | ");
    }
    description.AppendLiteral("TS_LF_SYNC");
  }
  if (description.IsEmpty()) {
    description.AppendLiteral("not-specified");
  }
  return description;
}

static const char* GetTextRunTypeName(TsRunType aRunType) {
  switch (aRunType) {
    case TS_RT_PLAIN:
      return "TS_RT_PLAIN";
    case TS_RT_HIDDEN:
      return "TS_RT_HIDDEN";
    case TS_RT_OPAQUE:
      return "TS_RT_OPAQUE";
    default:
      return "Unknown";
  }
}

static nsCString GetColorName(const TF_DA_COLOR& aColor) {
  switch (aColor.type) {
    case TF_CT_NONE:
      return "TF_CT_NONE"_ns;
    case TF_CT_SYSCOLOR:
      return nsPrintfCString("TF_CT_SYSCOLOR, nIndex:0x%08X",
                             static_cast<int32_t>(aColor.nIndex));
    case TF_CT_COLORREF:
      return nsPrintfCString("TF_CT_COLORREF, cr:0x%08X",
                             static_cast<int32_t>(aColor.cr));
      break;
    default:
      return nsPrintfCString("Unknown(%08X)",
                             static_cast<int32_t>(aColor.type));
  }
}

static nsCString GetLineStyleName(TF_DA_LINESTYLE aLineStyle) {
  switch (aLineStyle) {
    case TF_LS_NONE:
      return "TF_LS_NONE"_ns;
    case TF_LS_SOLID:
      return "TF_LS_SOLID"_ns;
    case TF_LS_DOT:
      return "TF_LS_DOT"_ns;
    case TF_LS_DASH:
      return "TF_LS_DASH"_ns;
    case TF_LS_SQUIGGLE:
      return "TF_LS_SQUIGGLE"_ns;
    default: {
      return nsPrintfCString("Unknown(%08X)", static_cast<int32_t>(aLineStyle));
    }
  }
}

static nsCString GetClauseAttrName(TF_DA_ATTR_INFO aAttr) {
  switch (aAttr) {
    case TF_ATTR_INPUT:
      return "TF_ATTR_INPUT"_ns;
    case TF_ATTR_TARGET_CONVERTED:
      return "TF_ATTR_TARGET_CONVERTED"_ns;
    case TF_ATTR_CONVERTED:
      return "TF_ATTR_CONVERTED"_ns;
    case TF_ATTR_TARGET_NOTCONVERTED:
      return "TF_ATTR_TARGET_NOTCONVERTED"_ns;
    case TF_ATTR_INPUT_ERROR:
      return "TF_ATTR_INPUT_ERROR"_ns;
    case TF_ATTR_FIXEDCONVERTED:
      return "TF_ATTR_FIXEDCONVERTED"_ns;
    case TF_ATTR_OTHER:
      return "TF_ATTR_OTHER"_ns;
    default: {
      return nsPrintfCString("Unknown(%08X)", static_cast<int32_t>(aAttr));
    }
  }
}

static nsCString GetDisplayAttrStr(const TF_DISPLAYATTRIBUTE& aDispAttr) {
  nsCString str;
  str = "crText:{ ";
  str += GetColorName(aDispAttr.crText);
  str += " }, crBk:{ ";
  str += GetColorName(aDispAttr.crBk);
  str += " }, lsStyle: ";
  str += GetLineStyleName(aDispAttr.lsStyle);
  str += ", fBoldLine: ";
  str += GetBoolName(aDispAttr.fBoldLine);
  str += ", crLine:{ ";
  str += GetColorName(aDispAttr.crLine);
  str += " }, bAttr: ";
  str += GetClauseAttrName(aDispAttr.bAttr);
  return str;
}

static const char* GetMouseButtonName(int16_t aButton) {
  switch (aButton) {
    case MouseButton::ePrimary:
      return "LeftButton";
    case MouseButton::eMiddle:
      return "MiddleButton";
    case MouseButton::eSecondary:
      return "RightButton";
    default:
      return "UnknownButton";
  }
}

#define ADD_SEPARATOR_IF_NECESSARY(aStr) \
  if (!aStr.IsEmpty()) {                 \
    aStr.AppendLiteral(", ");            \
  }

static nsCString GetMouseButtonsName(int16_t aButtons) {
  if (!aButtons) {
    return "no buttons"_ns;
  }
  nsCString names;
  if (aButtons & MouseButtonsFlag::ePrimaryFlag) {
    names = "LeftButton";
  }
  if (aButtons & MouseButtonsFlag::eSecondaryFlag) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += "RightButton";
  }
  if (aButtons & MouseButtonsFlag::eMiddleFlag) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += "MiddleButton";
  }
  if (aButtons & MouseButtonsFlag::e4thFlag) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += "4thButton";
  }
  if (aButtons & MouseButtonsFlag::e5thFlag) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += "5thButton";
  }
  return names;
}

static nsCString GetModifiersName(Modifiers aModifiers) {
  if (aModifiers == MODIFIER_NONE) {
    return "no modifiers"_ns;
  }
  nsCString names;
  if (aModifiers & MODIFIER_ALT) {
    names = NS_DOM_KEYNAME_ALT;
  }
  if (aModifiers & MODIFIER_ALTGRAPH) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += NS_DOM_KEYNAME_ALTGRAPH;
  }
  if (aModifiers & MODIFIER_CAPSLOCK) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += NS_DOM_KEYNAME_CAPSLOCK;
  }
  if (aModifiers & MODIFIER_CONTROL) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += NS_DOM_KEYNAME_CONTROL;
  }
  if (aModifiers & MODIFIER_FN) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += NS_DOM_KEYNAME_FN;
  }
  if (aModifiers & MODIFIER_FNLOCK) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += NS_DOM_KEYNAME_FNLOCK;
  }
  if (aModifiers & MODIFIER_META) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += NS_DOM_KEYNAME_META;
  }
  if (aModifiers & MODIFIER_NUMLOCK) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += NS_DOM_KEYNAME_NUMLOCK;
  }
  if (aModifiers & MODIFIER_SCROLLLOCK) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += NS_DOM_KEYNAME_SCROLLLOCK;
  }
  if (aModifiers & MODIFIER_SHIFT) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += NS_DOM_KEYNAME_SHIFT;
  }
  if (aModifiers & MODIFIER_SYMBOL) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += NS_DOM_KEYNAME_SYMBOL;
  }
  if (aModifiers & MODIFIER_SYMBOLLOCK) {
    ADD_SEPARATOR_IF_NECESSARY(names);
    names += NS_DOM_KEYNAME_SYMBOLLOCK;
  }
  return names;
}

class GetWritingModeName : public nsAutoCString {
public:
  explicit GetWritingModeName(const WritingMode& aWritingMode) {
    if (!aWritingMode.IsVertical()) {
      AssignLiteral("Horizontal");
      return;
    }
    if (aWritingMode.IsVerticalLR()) {
      AssignLiteral("Vertical (LR)");
      return;
    }
    AssignLiteral("Vertical (RL)");
  }
  virtual ~GetWritingModeName() {}
};

class GetEscapedUTF8String final : public NS_ConvertUTF16toUTF8 {
public:
  explicit GetEscapedUTF8String(const nsAString& aString)
      : NS_ConvertUTF16toUTF8(aString) {
    Escape();
  }
  explicit GetEscapedUTF8String(const char16ptr_t aString)
      : NS_ConvertUTF16toUTF8(aString) {
    Escape();
  }
  GetEscapedUTF8String(const char16ptr_t aString, uint32_t aLength)
      : NS_ConvertUTF16toUTF8(aString, aLength) {
    Escape();
  }

private:
  void Escape() {
    ReplaceSubstring("\r", "\\r");
    ReplaceSubstring("\n", "\\n");
    ReplaceSubstring("\t", "\\t");
  }
};

class GetInputScopeString : public nsAutoCString {
public:
  explicit GetInputScopeString(const nsTArray<InputScope>& aList) {
    for (InputScope inputScope : aList) {
      if (!IsEmpty()) {
        AppendLiteral(", ");
      }
      switch (inputScope) {
        case IS_DEFAULT:
          AppendLiteral("IS_DEFAULT");
          break;
        case IS_URL:
          AppendLiteral("IS_URL");
          break;
        case IS_FILE_FULLFILEPATH:
          AppendLiteral("IS_FILE_FULLFILEPATH");
          break;
        case IS_FILE_FILENAME:
          AppendLiteral("IS_FILE_FILENAME");
          break;
        case IS_EMAIL_USERNAME:
          AppendLiteral("IS_EMAIL_USERNAME");
          break;
        case IS_EMAIL_SMTPEMAILADDRESS:
          AppendLiteral("IS_EMAIL_SMTPEMAILADDRESS");
          break;
        case IS_LOGINNAME:
          AppendLiteral("IS_LOGINNAME");
          break;
        case IS_PERSONALNAME_FULLNAME:
          AppendLiteral("IS_PERSONALNAME_FULLNAME");
          break;
        case IS_PERSONALNAME_PREFIX:
          AppendLiteral("IS_PERSONALNAME_PREFIX");
          break;
        case IS_PERSONALNAME_GIVENNAME:
          AppendLiteral("IS_PERSONALNAME_GIVENNAME");
          break;
        case IS_PERSONALNAME_MIDDLENAME:
          AppendLiteral("IS_PERSONALNAME_MIDDLENAME");
          break;
        case IS_PERSONALNAME_SURNAME:
          AppendLiteral("IS_PERSONALNAME_SURNAME");
          break;
        case IS_PERSONALNAME_SUFFIX:
          AppendLiteral("IS_PERSONALNAME_SUFFIX");
          break;
        case IS_ADDRESS_FULLPOSTALADDRESS:
          AppendLiteral("IS_ADDRESS_FULLPOSTALADDRESS");
          break;
        case IS_ADDRESS_POSTALCODE:
          AppendLiteral("IS_ADDRESS_POSTALCODE");
          break;
        case IS_ADDRESS_STREET:
          AppendLiteral("IS_ADDRESS_STREET");
          break;
        case IS_ADDRESS_STATEORPROVINCE:
          AppendLiteral("IS_ADDRESS_STATEORPROVINCE");
          break;
        case IS_ADDRESS_CITY:
          AppendLiteral("IS_ADDRESS_CITY");
          break;
        case IS_ADDRESS_COUNTRYNAME:
          AppendLiteral("IS_ADDRESS_COUNTRYNAME");
          break;
        case IS_ADDRESS_COUNTRYSHORTNAME:
          AppendLiteral("IS_ADDRESS_COUNTRYSHORTNAME");
          break;
        case IS_CURRENCY_AMOUNTANDSYMBOL:
          AppendLiteral("IS_CURRENCY_AMOUNTANDSYMBOL");
          break;
        case IS_CURRENCY_AMOUNT:
          AppendLiteral("IS_CURRENCY_AMOUNT");
          break;
        case IS_DATE_FULLDATE:
          AppendLiteral("IS_DATE_FULLDATE");
          break;
        case IS_DATE_MONTH:
          AppendLiteral("IS_DATE_MONTH");
          break;
        case IS_DATE_DAY:
          AppendLiteral("IS_DATE_DAY");
          break;
        case IS_DATE_YEAR:
          AppendLiteral("IS_DATE_YEAR");
          break;
        case IS_DATE_MONTHNAME:
          AppendLiteral("IS_DATE_MONTHNAME");
          break;
        case IS_DATE_DAYNAME:
          AppendLiteral("IS_DATE_DAYNAME");
          break;
        case IS_DIGITS:
          AppendLiteral("IS_DIGITS");
          break;
        case IS_NUMBER:
          AppendLiteral("IS_NUMBER");
          break;
        case IS_ONECHAR:
          AppendLiteral("IS_ONECHAR");
          break;
        case IS_PASSWORD:
          AppendLiteral("IS_PASSWORD");
          break;
        case IS_TELEPHONE_FULLTELEPHONENUMBER:
          AppendLiteral("IS_TELEPHONE_FULLTELEPHONENUMBER");
          break;
        case IS_TELEPHONE_COUNTRYCODE:
          AppendLiteral("IS_TELEPHONE_COUNTRYCODE");
          break;
        case IS_TELEPHONE_AREACODE:
          AppendLiteral("IS_TELEPHONE_AREACODE");
          break;
        case IS_TELEPHONE_LOCALNUMBER:
          AppendLiteral("IS_TELEPHONE_LOCALNUMBER");
          break;
        case IS_TIME_FULLTIME:
          AppendLiteral("IS_TIME_FULLTIME");
          break;
        case IS_TIME_HOUR:
          AppendLiteral("IS_TIME_HOUR");
          break;
        case IS_TIME_MINORSEC:
          AppendLiteral("IS_TIME_MINORSEC");
          break;
        case IS_NUMBER_FULLWIDTH:
          AppendLiteral("IS_NUMBER_FULLWIDTH");
          break;
        case IS_ALPHANUMERIC_HALFWIDTH:
          AppendLiteral("IS_ALPHANUMERIC_HALFWIDTH");
          break;
        case IS_ALPHANUMERIC_FULLWIDTH:
          AppendLiteral("IS_ALPHANUMERIC_FULLWIDTH");
          break;
        case IS_CURRENCY_CHINESE:
          AppendLiteral("IS_CURRENCY_CHINESE");
          break;
        case IS_BOPOMOFO:
          AppendLiteral("IS_BOPOMOFO");
          break;
        case IS_HIRAGANA:
          AppendLiteral("IS_HIRAGANA");
          break;
        case IS_KATAKANA_HALFWIDTH:
          AppendLiteral("IS_KATAKANA_HALFWIDTH");
          break;
        case IS_KATAKANA_FULLWIDTH:
          AppendLiteral("IS_KATAKANA_FULLWIDTH");
          break;
        case IS_HANJA:
          AppendLiteral("IS_HANJA");
          break;
        case IS_PHRASELIST:
          AppendLiteral("IS_PHRASELIST");
          break;
        case IS_REGULAREXPRESSION:
          AppendLiteral("IS_REGULAREXPRESSION");
          break;
        case IS_SRGS:
          AppendLiteral("IS_SRGS");
          break;
        case IS_XML:
          AppendLiteral("IS_XML");
          break;
        case IS_PRIVATE:
          AppendLiteral("IS_PRIVATE");
          break;
        default:
          AppendPrintf("Unknown Value(%d)", inputScope);
          break;
      }
    }
  }
};

/******************************************************************/
/* InputScopeImpl                                                 */
/******************************************************************/

class InputScopeImpl final : public ITfInputScope {
  ~InputScopeImpl() {}

public:
  explicit InputScopeImpl(const nsTArray<InputScope>& aList)
      : mInputScopes(aList.Clone()) {
    MOZ_LOG(
        gIMELog, LogLevel::Info,
        ("0x%p InputScopeImpl(%s)", this, GetInputScopeString(aList).get()));
  }

  NS_INLINE_DECL_IUNKNOWN_REFCOUNTING(InputScopeImpl)

  STDMETHODIMP QueryInterface(REFIID riid, void** ppv) {
    *ppv = nullptr;
    if ((IID_IUnknown == riid) || (IID_ITfInputScope == riid)) {
      *ppv = static_cast<ITfInputScope*>(this);
    }
    if (*ppv) {
      AddRef();
      return S_OK;
    }
    return E_NOINTERFACE;
  }

  STDMETHODIMP GetInputScopes(InputScope** pprgInputScopes, UINT* pcCount) {
    uint32_t count = (mInputScopes.IsEmpty() ? 1 : mInputScopes.Length());

    InputScope* pScope =
        (InputScope*)CoTaskMemAlloc(sizeof(InputScope) * count);
    NS_ENSURE_TRUE(pScope, E_OUTOFMEMORY);

    if (mInputScopes.IsEmpty()) {
      *pScope = IS_DEFAULT;
      *pcCount = 1;
      *pprgInputScopes = pScope;
      return S_OK;
    }

    *pcCount = 0;

    for (uint32_t idx = 0; idx < count; idx++) {
      *(pScope + idx) = mInputScopes[idx];
      (*pcCount)++;
    }

    *pprgInputScopes = pScope;
    return S_OK;
  }

  STDMETHODIMP GetPhrase(BSTR** ppbstrPhrases, UINT* pcCount) {
    return E_NOTIMPL;
  }
  STDMETHODIMP GetRegularExpression(BSTR* pbstrRegExp) { return E_NOTIMPL; }
  STDMETHODIMP GetSRGS(BSTR* pbstrSRGS) { return E_NOTIMPL; }
  STDMETHODIMP GetXML(BSTR* pbstrXML) { return E_NOTIMPL; }

private:
  nsTArray<InputScope> mInputScopes;
};

/******************************************************************/
/* TSFStaticSink                                                  */
/******************************************************************/

class TSFStaticSink final : public ITfInputProcessorProfileActivationSink {
public:
  static TSFStaticSink* GetInstance() {
    if (!sInstance) {
      RefPtr<ITfThreadMgr> threadMgr = TSFTextStore::GetThreadMgr();
      if (NS_WARN_IF(!threadMgr)) {
        MOZ_LOG(
            gIMELog, LogLevel::Error,
            ("TSFStaticSink::GetInstance() FAILED to initialize TSFStaticSink "
             "instance due to no ThreadMgr instance"));
        return nullptr;
      }
      RefPtr<ITfInputProcessorProfiles> inputProcessorProfiles =
          TSFTextStore::GetInputProcessorProfiles();
      if (NS_WARN_IF(!inputProcessorProfiles)) {
        MOZ_LOG(
            gIMELog, LogLevel::Error,
            ("TSFStaticSink::GetInstance() FAILED to initialize TSFStaticSink "
             "instance due to no InputProcessorProfiles instance"));
        return nullptr;
      }
      RefPtr<TSFStaticSink> staticSink = new TSFStaticSink();
      if (NS_WARN_IF(!staticSink->Init(threadMgr, inputProcessorProfiles))) {
        staticSink->Destroy();
        MOZ_LOG(
            gIMELog, LogLevel::Error,
            ("TSFStaticSink::GetInstance() FAILED to initialize TSFStaticSink "
             "instance"));
        return nullptr;
      }
      sInstance = staticSink.forget();
    }
    return sInstance;
  }

  static void Shutdown() {
    if (sInstance) {
      sInstance->Destroy();
      sInstance = nullptr;
    }
  }

  bool Init(ITfThreadMgr* aThreadMgr,
            ITfInputProcessorProfiles* aInputProcessorProfiles);
  STDMETHODIMP QueryInterface(REFIID riid, void** ppv) {
    *ppv = nullptr;
    if (IID_IUnknown == riid ||
        IID_ITfInputProcessorProfileActivationSink == riid) {
      *ppv = static_cast<ITfInputProcessorProfileActivationSink*>(this);
    }
    if (*ppv) {
      AddRef();
      return S_OK;
    }
    return E_NOINTERFACE;
  }

  NS_INLINE_DECL_IUNKNOWN_REFCOUNTING(TSFStaticSink)

  const nsString& GetActiveTIPKeyboardDescription() const {
    return mActiveTIPKeyboardDescription;
  }

  static bool IsIMM_IMEActive() {
    // Use IMM API until TSFStaticSink starts to work.
    if (!sInstance || !sInstance->EnsureInitActiveTIPKeyboard()) {
      return IsIMM_IME(::GetKeyboardLayout(0));
    }
    return sInstance->mIsIMM_IME;
  }

  static bool IsIMM_IME(HKL aHKL) {
    return (::ImmGetIMEFileNameW(aHKL, nullptr, 0) > 0);
  }

  static bool IsTraditionalChinese() {
    EnsureInstance();
    return sInstance && sInstance->IsTraditionalChineseInternal();
  }
  static bool IsSimplifiedChinese() {
    EnsureInstance();
    return sInstance && sInstance->IsSimplifiedChineseInternal();
  }
  static bool IsJapanese() {
    EnsureInstance();
    return sInstance && sInstance->IsJapaneseInternal();
  }
  static bool IsKorean() {
    EnsureInstance();
    return sInstance && sInstance->IsKoreanInternal();
  }

  /**
   * ActiveTIP() returns an ID for currently active TIP.
   * Please note that this method is expensive due to needs a lot of GUID
   * comparations if active language ID is one of CJKT.  If you need to
   * check TIPs for a specific language, you should check current language
   * first.
   */
  static TextInputProcessorID ActiveTIP() {
    EnsureInstance();
    if (!sInstance || !sInstance->EnsureInitActiveTIPKeyboard()) {
      return TextInputProcessorID::eUnknown;
    }
    sInstance->ComputeActiveTextInputProcessor();
    if (NS_WARN_IF(sInstance->mActiveTIP ==
                   TextInputProcessorID::eNotComputed)) {
      return TextInputProcessorID::eUnknown;
    }
    return sInstance->mActiveTIP;
  }

  static bool GetActiveTIPNameForTelemetry(nsAString& aName) {
    if (!sInstance || !sInstance->EnsureInitActiveTIPKeyboard()) {
      return false;
    }
    if (sInstance->mActiveTIPGUID == GUID_NULL) {
      aName.Truncate();
      aName.AppendPrintf("0x%04X", sInstance->mLangID);
      return true;
    }
    // key should be "LocaleID|Description".  Although GUID of the
    // profile is unique key since description may be localized for system
    // language, unfortunately, it's too long to record as key with its
    // description.  Therefore, we should record only the description with
    // LocaleID because Microsoft IME may not include language information.
    // 72 is kMaximumKeyStringLength in TelemetryScalar.cpp
    aName.Truncate();
    aName.AppendPrintf("0x%04X|", sInstance->mLangID);
    nsAutoString description;
    description.Assign(sInstance->mActiveTIPKeyboardDescription);
    static const uint32_t kMaxDescriptionLength = 72 - aName.Length();
    if (description.Length() > kMaxDescriptionLength) {
      if (NS_IS_LOW_SURROGATE(description[kMaxDescriptionLength - 1]) &&
          NS_IS_HIGH_SURROGATE(description[kMaxDescriptionLength - 2])) {
        description.Truncate(kMaxDescriptionLength - 2);
      } else {
        description.Truncate(kMaxDescriptionLength - 1);
      }
      // U+2026 is "..."
      description.Append(char16_t(0x2026));
    }
    aName.Append(description);
    return true;
  }

  static bool IsMSChangJieOrMSQuickActive() {
    // ActiveTIP() is expensive if it hasn't computed active TIP yet.
    // For avoiding unnecessary computation, we should check if the language
    // for current TIP is Traditional Chinese.
    if (!IsTraditionalChinese()) {
      return false;
    }
    switch (ActiveTIP()) {
      case TextInputProcessorID::eMicrosoftChangJie:
      case TextInputProcessorID::eMicrosoftQuick:
        return true;
      default:
        return false;
    }
  }

  static bool IsMSPinyinOrMSWubiActive() {
    // ActiveTIP() is expensive if it hasn't computed active TIP yet.
    // For avoiding unnecessary computation, we should check if the language
    // for current TIP is Simplified Chinese.
    if (!IsSimplifiedChinese()) {
      return false;
    }
    switch (ActiveTIP()) {
      case TextInputProcessorID::eMicrosoftPinyin:
      case TextInputProcessorID::eMicrosoftWubi:
        return true;
      default:
        return false;
    }
  }

  static bool IsMSJapaneseIMEActive() {
    // ActiveTIP() is expensive if it hasn't computed active TIP yet.
    // For avoiding unnecessary computation, we should check if the language
    // for current TIP is Japanese.
    if (!IsJapanese()) {
      return false;
    }
    return ActiveTIP() == TextInputProcessorID::eMicrosoftIMEForJapanese;
  }

  static bool IsGoogleJapaneseInputActive() {
    // ActiveTIP() is expensive if it hasn't computed active TIP yet.
    // For avoiding unnecessary computation, we should check if the language
    // for current TIP is Japanese.
    if (!IsJapanese()) {
      return false;
    }
    return ActiveTIP() == TextInputProcessorID::eGoogleJapaneseInput;
  }

  static bool IsATOKActive() {
    // ActiveTIP() is expensive if it hasn't computed active TIP yet.
    // For avoiding unnecessary computation, we should check if active TIP is
    // ATOK first since it's cheaper.
    return IsJapanese() && sInstance->IsATOKActiveInternal();
  }

  // Note that ATOK 2011 - 2016 refers native caret position for deciding its
  // popup window position.
  static bool IsATOKReferringNativeCaretActive() {
    // ActiveTIP() is expensive if it hasn't computed active TIP yet.
    // For avoiding unnecessary computation, we should check if active TIP is
    // ATOK first since it's cheaper.
    if (!IsJapanese() || !sInstance->IsATOKActiveInternal()) {
      return false;
    }
    switch (ActiveTIP()) {
      case TextInputProcessorID::eATOK2011:
      case TextInputProcessorID::eATOK2012:
      case TextInputProcessorID::eATOK2013:
      case TextInputProcessorID::eATOK2014:
      case TextInputProcessorID::eATOK2015:
        return true;
      default:
        return false;
    }
  }

private:
  static void EnsureInstance() {
    if (!sInstance) {
      RefPtr<TSFStaticSink> staticSink = GetInstance();
      Unused << staticSink;
    }
  }

  bool IsTraditionalChineseInternal() const { return mLangID == 0x0404; }
  bool IsSimplifiedChineseInternal() const { return mLangID == 0x0804; }
  bool IsJapaneseInternal() const { return mLangID == 0x0411; }
  bool IsKoreanInternal() const { return mLangID == 0x0412; }

  bool IsATOKActiveInternal() {
    EnsureInitActiveTIPKeyboard();
    // FYI: Name of packaged ATOK includes the release year like "ATOK 2015".
    //      Name of ATOK Passport (subscription) equals "ATOK".
    return StringBeginsWith(mActiveTIPKeyboardDescription, u"ATOK "_ns) ||
           mActiveTIPKeyboardDescription.EqualsLiteral("ATOK");
  }

  void ComputeActiveTextInputProcessor() {
    if (mActiveTIP != TextInputProcessorID::eNotComputed) {
      return;
    }

    if (mActiveTIPGUID == GUID_NULL) {
      mActiveTIP = TextInputProcessorID::eNone;
      return;
    }

    // Comparing GUID is slow. So, we should use language information to
    // reduce the comparing cost for TIP which is not we do not support
    // specifically since they are always compared with all supported TIPs.
    switch (mLangID) {
      case 0x0404:
        mActiveTIP = ComputeActiveTIPAsTraditionalChinese();
        break;
      case 0x0411:
        mActiveTIP = ComputeActiveTIPAsJapanese();
        break;
      case 0x0412:
        mActiveTIP = ComputeActiveTIPAsKorean();
        break;
      case 0x0804:
        mActiveTIP = ComputeActiveTIPAsSimplifiedChinese();
        break;
      default:
        mActiveTIP = TextInputProcessorID::eUnknown;
        break;
    }
    // Special case for Keyman Desktop, it is available for any languages.
    // Therefore, we need to check it only if we don't know the active TIP.
    if (mActiveTIP != TextInputProcessorID::eUnknown) {
      return;
    }

    // Note that keyboard layouts for Keyman assign its GUID on install
    // randomly, but CLSID is constant in any environments.
    // https://bugzilla.mozilla.org/show_bug.cgi?id=1670834#c7
    // https://github.com/keymanapp/keyman/blob/318c73a9e1d571d942837ff9964590626e5bd5aa/windows/src/engine/kmtip/globals.cpp#L37
    // {FE0420F1-38D1-4B4C-96BF-E7E20A74CFB7}
    static constexpr CLSID kKeymanDesktop_CLSID = {
        0xFE0420F1,
        0x38D1,
        0x4B4C,
        {0x96, 0xBF, 0xE7, 0xE2, 0x0A, 0x74, 0xCF, 0xB7}};
    if (mActiveTIPCLSID == kKeymanDesktop_CLSID) {
      mActiveTIP = TextInputProcessorID::eKeymanDesktop;
    }
  }

  TextInputProcessorID ComputeActiveTIPAsJapanese() {
    // {A76C93D9-5523-4E90-AAFA-4DB112F9AC76} (Win7, Win8.1, Win10)
    static constexpr GUID kMicrosoftIMEForJapaneseGUID = {
        0xA76C93D9,
        0x5523,
        0x4E90,
        {0xAA, 0xFA, 0x4D, 0xB1, 0x12, 0xF9, 0xAC, 0x76}};
    if (mActiveTIPGUID == kMicrosoftIMEForJapaneseGUID) {
      return TextInputProcessorID::eMicrosoftIMEForJapanese;
    }
    // {54EDCC94-1524-4BB1-9FB7-7BABE4F4CA64}
    static constexpr GUID kMicrosoftOfficeIME2010ForJapaneseGUID = {
        0x54EDCC94,
        0x1524,
        0x4BB1,
        {0x9F, 0xB7, 0x7B, 0xAB, 0xE4, 0xF4, 0xCA, 0x64}};
    if (mActiveTIPGUID == kMicrosoftOfficeIME2010ForJapaneseGUID) {
      return TextInputProcessorID::eMicrosoftOfficeIME2010ForJapanese;
    }
    // {773EB24E-CA1D-4B1B-B420-FA985BB0B80D}
    static constexpr GUID kGoogleJapaneseInputGUID = {
        0x773EB24E,
        0xCA1D,
        0x4B1B,
        {0xB4, 0x20, 0xFA, 0x98, 0x5B, 0xB0, 0xB8, 0x0D}};
    if (mActiveTIPGUID == kGoogleJapaneseInputGUID) {
      return TextInputProcessorID::eGoogleJapaneseInput;
    }
    // {F9C24A5C-8A53-499D-9572-93B2FF582115}
    static const GUID kATOK2011GUID = {
        0xF9C24A5C,
        0x8A53,
        0x499D,
        {0x95, 0x72, 0x93, 0xB2, 0xFF, 0x58, 0x21, 0x15}};
    if (mActiveTIPGUID == kATOK2011GUID) {
      return TextInputProcessorID::eATOK2011;
    }
    // {1DE01562-F445-401B-B6C3-E5B18DB79461}
    static constexpr GUID kATOK2012GUID = {
        0x1DE01562,
        0xF445,
        0x401B,
        {0xB6, 0xC3, 0xE5, 0xB1, 0x8D, 0xB7, 0x94, 0x61}};
    if (mActiveTIPGUID == kATOK2012GUID) {
      return TextInputProcessorID::eATOK2012;
    }
    // {3C4DB511-189A-4168-B6EA-BFD0B4C85615}
    static constexpr GUID kATOK2013GUID = {
        0x3C4DB511,
        0x189A,
        0x4168,
        {0xB6, 0xEA, 0xBF, 0xD0, 0xB4, 0xC8, 0x56, 0x15}};
    if (mActiveTIPGUID == kATOK2013GUID) {
      return TextInputProcessorID::eATOK2013;
    }
    // {4EF33B79-6AA9-4271-B4BF-9321C279381B}
    static constexpr GUID kATOK2014GUID = {
        0x4EF33B79,
        0x6AA9,
        0x4271,
        {0xB4, 0xBF, 0x93, 0x21, 0xC2, 0x79, 0x38, 0x1B}};
    if (mActiveTIPGUID == kATOK2014GUID) {
      return TextInputProcessorID::eATOK2014;
    }
    // {EAB4DC00-CE2E-483D-A86A-E6B99DA9599A}
    static constexpr GUID kATOK2015GUID = {
        0xEAB4DC00,
        0xCE2E,
        0x483D,
        {0xA8, 0x6A, 0xE6, 0xB9, 0x9D, 0xA9, 0x59, 0x9A}};
    if (mActiveTIPGUID == kATOK2015GUID) {
      return TextInputProcessorID::eATOK2015;
    }
    // {0B557B4C-5740-4110-A60A-1493FA10BF2B}
    static constexpr GUID kATOK2016GUID = {
        0x0B557B4C,
        0x5740,
        0x4110,
        {0xA6, 0x0A, 0x14, 0x93, 0xFA, 0x10, 0xBF, 0x2B}};
    if (mActiveTIPGUID == kATOK2016GUID) {
      return TextInputProcessorID::eATOK2016;
    }

    // * ATOK 2017
    //   - {6DBFD8F5-701D-11E6-920F-782BCBA6348F}
    // * ATOK Passport (confirmed with version 31.1.2)
    //   - {A38F2FD9-7199-45E1-841C-BE0313D8052F}

    if (IsATOKActiveInternal()) {
      return TextInputProcessorID::eATOKUnknown;
    }

    // {E6D66705-1EDA-4373-8D01-1D0CB2D054C7}
    static constexpr GUID kJapanist10GUID = {
        0xE6D66705,
        0x1EDA,
        0x4373,
        {0x8D, 0x01, 0x1D, 0x0C, 0xB2, 0xD0, 0x54, 0xC7}};
    if (mActiveTIPGUID == kJapanist10GUID) {
      return TextInputProcessorID::eJapanist10;
    }

    return TextInputProcessorID::eUnknown;
  }

  TextInputProcessorID ComputeActiveTIPAsTraditionalChinese() {
    // {B2F9C502-1742-11D4-9790-0080C882687E} (Win8.1, Win10)
    static constexpr GUID kMicrosoftBopomofoGUID = {
        0xB2F9C502,
        0x1742,
        0x11D4,
        {0x97, 0x90, 0x00, 0x80, 0xC8, 0x82, 0x68, 0x7E}};
    if (mActiveTIPGUID == kMicrosoftBopomofoGUID) {
      return TextInputProcessorID::eMicrosoftBopomofo;
    }
    // {4BDF9F03-C7D3-11D4-B2AB-0080C882687E} (Win7, Win8.1, Win10)
    static const GUID kMicrosoftChangJieGUID = {
        0x4BDF9F03,
        0xC7D3,
        0x11D4,
        {0xB2, 0xAB, 0x00, 0x80, 0xC8, 0x82, 0x68, 0x7E}};
    if (mActiveTIPGUID == kMicrosoftChangJieGUID) {
      return TextInputProcessorID::eMicrosoftChangJie;
    }
    // {761309DE-317A-11D4-9B5D-0080C882687E} (Win7)
    static constexpr GUID kMicrosoftPhoneticGUID = {
        0x761309DE,
        0x317A,
        0x11D4,
        {0x9B, 0x5D, 0x00, 0x80, 0xC8, 0x82, 0x68, 0x7E}};
    if (mActiveTIPGUID == kMicrosoftPhoneticGUID) {
      return TextInputProcessorID::eMicrosoftPhonetic;
    }
    // {6024B45F-5C54-11D4-B921-0080C882687E} (Win7, Win8.1, Win10)
    static constexpr GUID kMicrosoftQuickGUID = {
        0x6024B45F,
        0x5C54,
        0x11D4,
        {0xB9, 0x21, 0x00, 0x80, 0xC8, 0x82, 0x68, 0x7E}};
    if (mActiveTIPGUID == kMicrosoftQuickGUID) {
      return TextInputProcessorID::eMicrosoftQuick;
    }
    // {F3BA907A-6C7E-11D4-97FA-0080C882687E} (Win7)
    static constexpr GUID kMicrosoftNewChangJieGUID = {
        0xF3BA907A,
        0x6C7E,
        0x11D4,
        {0x97, 0xFA, 0x00, 0x80, 0xC8, 0x82, 0x68, 0x7E}};
    if (mActiveTIPGUID == kMicrosoftNewChangJieGUID) {
      return TextInputProcessorID::eMicrosoftNewChangJie;
    }
    // {B2F9C502-1742-11D4-9790-0080C882687E} (Win7)
    static constexpr GUID kMicrosoftNewPhoneticGUID = {
        0xB2F9C502,
        0x1742,
        0x11D4,
        {0x97, 0x90, 0x00, 0x80, 0xC8, 0x82, 0x68, 0x7E}};
    if (mActiveTIPGUID == kMicrosoftNewPhoneticGUID) {
      return TextInputProcessorID::eMicrosoftNewPhonetic;
    }
    // {0B883BA0-C1C7-11D4-87F9-0080C882687E} (Win7)
    static constexpr GUID kMicrosoftNewQuickGUID = {
        0x0B883BA0,
        0xC1C7,
        0x11D4,
        {0x87, 0xF9, 0x00, 0x80, 0xC8, 0x82, 0x68, 0x7E}};
    if (mActiveTIPGUID == kMicrosoftNewQuickGUID) {
      return TextInputProcessorID::eMicrosoftNewQuick;
    }

    // NOTE: There are some other Traditional Chinese TIPs installed in Windows:
    // * Chinese Traditional Array (version 6.0)
    //   - {D38EFF65-AA46-4FD5-91A7-67845FB02F5B} (Win7, Win8.1)
    // * Chinese Traditional DaYi (version 6.0)
    //   - {037B2C25-480C-4D7F-B027-D6CA6B69788A} (Win7, Win8.1)

    // {B58630B5-0ED3-4335-BBC9-E77BBCB43CAD}
    static const GUID kFreeChangJieGUID = {
        0xB58630B5,
        0x0ED3,
        0x4335,
        {0xBB, 0xC9, 0xE7, 0x7B, 0xBC, 0xB4, 0x3C, 0xAD}};
    if (mActiveTIPGUID == kFreeChangJieGUID) {
      return TextInputProcessorID::eFreeChangJie;
    }

    return TextInputProcessorID::eUnknown;
  }

  TextInputProcessorID ComputeActiveTIPAsSimplifiedChinese() {
    // FYI: This matches with neither "Microsoft Pinyin ABC Input Style" nor
    //      "Microsoft Pinyin New Experience Input Style" on Win7.
    // {FA550B04-5AD7-411F-A5AC-CA038EC515D7} (Win8.1, Win10)
    static constexpr GUID kMicrosoftPinyinGUID = {
        0xFA550B04,
        0x5AD7,
        0x411F,
        {0xA5, 0xAC, 0xCA, 0x03, 0x8E, 0xC5, 0x15, 0xD7}};
    if (mActiveTIPGUID == kMicrosoftPinyinGUID) {
      return TextInputProcessorID::eMicrosoftPinyin;
    }

    // {F3BA9077-6C7E-11D4-97FA-0080C882687E} (Win7)
    static constexpr GUID kMicrosoftPinyinNewExperienceInputStyleGUID = {
        0xF3BA9077,
        0x6C7E,
        0x11D4,
        {0x97, 0xFA, 0x00, 0x80, 0xC8, 0x82, 0x68, 0x7E}};
    if (mActiveTIPGUID == kMicrosoftPinyinNewExperienceInputStyleGUID) {
      return TextInputProcessorID::eMicrosoftPinyinNewExperienceInputStyle;
    }
    // {82590C13-F4DD-44F4-BA1D-8667246FDF8E} (Win8.1, Win10)
    static constexpr GUID kMicrosoftWubiGUID = {
        0x82590C13,
        0xF4DD,
        0x44F4,
        {0xBA, 0x1D, 0x86, 0x67, 0x24, 0x6F, 0xDF, 0x8E}};
    if (mActiveTIPGUID == kMicrosoftWubiGUID) {
      return TextInputProcessorID::eMicrosoftWubi;
    }
    // NOTE: There are some other Simplified Chinese TIPs installed in Windows:
    // * Chinese Simplified QuanPin (version 6.0)
    //   - {54FC610E-6ABD-4685-9DDD-A130BDF1B170} (Win8.1)
    // * Chinese Simplified ZhengMa (version 6.0)
    //   - {733B4D81-3BC3-4132-B91A-E9CDD5E2BFC9} (Win8.1)
    // * Chinese Simplified ShuangPin (version 6.0)
    //   - {EF63706D-31C4-490E-9DBB-BD150ADC454B} (Win8.1)
    // * Microsoft Pinyin ABC Input Style
    //   - {FCA121D2-8C6D-41FB-B2DE-A2AD110D4820} (Win7)
    return TextInputProcessorID::eUnknown;
  }

  TextInputProcessorID ComputeActiveTIPAsKorean() {
    // {B5FE1F02-D5F2-4445-9C03-C568F23C99A1} (Win7, Win8.1, Win10)
    static constexpr GUID kMicrosoftIMEForKoreanGUID = {
        0xB5FE1F02,
        0xD5F2,
        0x4445,
        {0x9C, 0x03, 0xC5, 0x68, 0xF2, 0x3C, 0x99, 0xA1}};
    if (mActiveTIPGUID == kMicrosoftIMEForKoreanGUID) {
      return TextInputProcessorID::eMicrosoftIMEForKorean;
    }
    // {B60AF051-257A-46BC-B9D3-84DAD819BAFB} (Win8.1, Win10)
    static constexpr GUID kMicrosoftOldHangulGUID = {
        0xB60AF051,
        0x257A,
        0x46BC,
        {0xB9, 0xD3, 0x84, 0xDA, 0xD8, 0x19, 0xBA, 0xFB}};
    if (mActiveTIPGUID == kMicrosoftOldHangulGUID) {
      return TextInputProcessorID::eMicrosoftOldHangul;
    }

    // NOTE: There is the other Korean TIP installed in Windows:
    // * Microsoft IME 2010
    //   - {48878C45-93F9-4aaf-A6A1-272CD863C4F5} (Win7)

    return TextInputProcessorID::eUnknown;
  }

public:  // ITfInputProcessorProfileActivationSink
  STDMETHODIMP OnActivated(DWORD, LANGID, REFCLSID, REFGUID, REFGUID, HKL,
                           DWORD);

private:
  TSFStaticSink();
  virtual ~TSFStaticSink() {}

  bool EnsureInitActiveTIPKeyboard();

  void Destroy();

  void GetTIPDescription(REFCLSID aTextService, LANGID aLangID,
                         REFGUID aProfile, nsAString& aDescription);
  bool IsTIPCategoryKeyboard(REFCLSID aTextService, LANGID aLangID,
                             REFGUID aProfile);

  TextInputProcessorID mActiveTIP;

  // Cookie of installing ITfInputProcessorProfileActivationSink
  DWORD mIPProfileCookie;

  LANGID mLangID;

  // True if current IME is implemented with IMM.
  bool mIsIMM_IME;
  // True if OnActivated() is already called
  bool mOnActivatedCalled;

  RefPtr<ITfThreadMgr> mThreadMgr;
  RefPtr<ITfInputProcessorProfiles> mInputProcessorProfiles;

  // Active TIP keyboard's description.  If active language profile isn't TIP,
  // i.e., IMM-IME or just a keyboard layout, this is empty.
  nsString mActiveTIPKeyboardDescription;

  // Active TIP's GUID and CLSID
  GUID mActiveTIPGUID;
  CLSID mActiveTIPCLSID;

  static StaticRefPtr<TSFStaticSink> sInstance;
};

StaticRefPtr<TSFStaticSink> TSFStaticSink::sInstance;

TSFStaticSink::TSFStaticSink()
    : mActiveTIP(TextInputProcessorID::eNotComputed),
      mIPProfileCookie(TF_INVALID_COOKIE),
      mLangID(0),
      mIsIMM_IME(false),
      mOnActivatedCalled(false),
      mActiveTIPGUID(GUID_NULL) {}

bool TSFStaticSink::Init(ITfThreadMgr* aThreadMgr,
                         ITfInputProcessorProfiles* aInputProcessorProfiles) {
  MOZ_ASSERT(!mThreadMgr && !mInputProcessorProfiles,
             "TSFStaticSink::Init() must be called only once");

  mThreadMgr = aThreadMgr;
  mInputProcessorProfiles = aInputProcessorProfiles;

  RefPtr<ITfSource> source;
  HRESULT hr =
      mThreadMgr->QueryInterface(IID_ITfSource, getter_AddRefs(source));
  if (FAILED(hr)) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFStaticSink::Init() FAILED to get ITfSource "
             "instance (0x%08lX)",
             this, hr));
    return false;
  }

  // NOTE: On Vista or later, Windows let us know activate IME changed only
  //       with ITfInputProcessorProfileActivationSink.
  hr = source->AdviseSink(
      IID_ITfInputProcessorProfileActivationSink,
      static_cast<ITfInputProcessorProfileActivationSink*>(this),
      &mIPProfileCookie);
  if (FAILED(hr) || mIPProfileCookie == TF_INVALID_COOKIE) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFStaticSink::Init() FAILED to install "
             "ITfInputProcessorProfileActivationSink (0x%08lX)",
             this, hr));
    return false;
  }

  MOZ_LOG(gIMELog, LogLevel::Info,
          ("0x%p TSFStaticSink::Init(), "
           "mIPProfileCookie=0x%08lX",
           this, mIPProfileCookie));
  return true;
}

void TSFStaticSink::Destroy() {
  MOZ_LOG(gIMELog, LogLevel::Info,
          ("0x%p TSFStaticSink::Shutdown() "
           "mIPProfileCookie=0x%08lX",
           this, mIPProfileCookie));

  if (mIPProfileCookie != TF_INVALID_COOKIE) {
    RefPtr<ITfSource> source;
    HRESULT hr =
        mThreadMgr->QueryInterface(IID_ITfSource, getter_AddRefs(source));
    if (FAILED(hr)) {
      MOZ_LOG(gIMELog, LogLevel::Error,
              ("0x%p TSFStaticSink::Shutdown() FAILED to get "
               "ITfSource instance (0x%08lX)",
               this, hr));
    } else {
      hr = source->UnadviseSink(mIPProfileCookie);
      if (FAILED(hr)) {
        MOZ_LOG(gIMELog, LogLevel::Error,
                ("0x%p TSFTextStore::Shutdown() FAILED to uninstall "
                 "ITfInputProcessorProfileActivationSink (0x%08lX)",
                 this, hr));
      }
    }
  }

  mThreadMgr = nullptr;
  mInputProcessorProfiles = nullptr;
}

STDMETHODIMP
TSFStaticSink::OnActivated(DWORD dwProfileType, LANGID langid, REFCLSID rclsid,
                           REFGUID catid, REFGUID guidProfile, HKL hkl,
                           DWORD dwFlags) {
  if ((dwFlags & TF_IPSINK_FLAG_ACTIVE) &&
      (dwProfileType == TF_PROFILETYPE_KEYBOARDLAYOUT ||
       catid == GUID_TFCAT_TIP_KEYBOARD)) {
    mOnActivatedCalled = true;
    mActiveTIP = TextInputProcessorID::eNotComputed;
    mActiveTIPGUID = guidProfile;
    mActiveTIPCLSID = rclsid;
    mLangID = langid & 0xFFFF;
    mIsIMM_IME = IsIMM_IME(hkl);
    GetTIPDescription(rclsid, langid, guidProfile,
                      mActiveTIPKeyboardDescription);
    if (mActiveTIPGUID != GUID_NULL) {
      // key should be "LocaleID|Description".  Although GUID of the
      // profile is unique key since description may be localized for system
      // language, unfortunately, it's too long to record as key with its
      // description.  Therefore, we should record only the description with
      // LocaleID because Microsoft IME may not include language information.
      // 72 is kMaximumKeyStringLength in TelemetryScalar.cpp
      nsAutoString key;
      TSFStaticSink::GetActiveTIPNameForTelemetry(key);
      glean::widget::ime_name_on_windows.Get(NS_ConvertUTF16toUTF8(key))
          .Set(true);
    }
    // Notify IMEHandler of changing active keyboard layout.
    IMEHandler::OnKeyboardLayoutChanged();
  }
  MOZ_LOG(gIMELog, LogLevel::Info,
          ("0x%p TSFStaticSink::OnActivated(dwProfileType=%s (0x%08lX), "
           "langid=0x%08X, rclsid=%s, catid=%s, guidProfile=%s, hkl=0x%p, "
           "dwFlags=0x%08lX (TF_IPSINK_FLAG_ACTIVE: %s)), mIsIMM_IME=%s, "
           "mActiveTIPDescription=\"%s\"",
           this,
           dwProfileType == TF_PROFILETYPE_INPUTPROCESSOR
               ? "TF_PROFILETYPE_INPUTPROCESSOR"
           : dwProfileType == TF_PROFILETYPE_KEYBOARDLAYOUT
               ? "TF_PROFILETYPE_KEYBOARDLAYOUT"
               : "Unknown",
           dwProfileType, langid, GetCLSIDNameStr(rclsid).get(),
           GetGUIDNameStr(catid).get(), GetGUIDNameStr(guidProfile).get(), hkl,
           dwFlags, GetBoolName(dwFlags & TF_IPSINK_FLAG_ACTIVE),
           GetBoolName(mIsIMM_IME),
           NS_ConvertUTF16toUTF8(mActiveTIPKeyboardDescription).get()));
  return S_OK;
}

bool TSFStaticSink::EnsureInitActiveTIPKeyboard() {
  if (mOnActivatedCalled) {
    return true;
  }

  RefPtr<ITfInputProcessorProfileMgr> profileMgr;
  HRESULT hr = mInputProcessorProfiles->QueryInterface(
      IID_ITfInputProcessorProfileMgr, getter_AddRefs(profileMgr));
  if (FAILED(hr) || !profileMgr) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFStaticSink::EnsureInitActiveLanguageProfile(), FAILED "
             "to get input processor profile manager, hr=0x%08lX",
             this, hr));
    return false;
  }

  TF_INPUTPROCESSORPROFILE profile;
  hr = profileMgr->GetActiveProfile(GUID_TFCAT_TIP_KEYBOARD, &profile);
  if (hr == S_FALSE) {
    MOZ_LOG(gIMELog, LogLevel::Info,
            ("0x%p TSFStaticSink::EnsureInitActiveLanguageProfile(), FAILED "
             "to get active keyboard layout profile due to no active profile, "
             "hr=0x%08lX",
             this, hr));
    // XXX Should we call OnActivated() with arguments like non-TIP in this
    //     case?
    return false;
  }
  if (FAILED(hr)) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFStaticSink::EnsureInitActiveLanguageProfile(), FAILED "
             "to get active TIP keyboard, hr=0x%08lX",
             this, hr));
    return false;
  }

  MOZ_LOG(gIMELog, LogLevel::Info,
          ("0x%p TSFStaticSink::EnsureInitActiveLanguageProfile(), "
           "calling OnActivated() manually...",
           this));
  OnActivated(profile.dwProfileType, profile.langid, profile.clsid,
              profile.catid, profile.guidProfile, ::GetKeyboardLayout(0),
              TF_IPSINK_FLAG_ACTIVE);
  return true;
}

void TSFStaticSink::GetTIPDescription(REFCLSID aTextService, LANGID aLangID,
                                      REFGUID aProfile,
                                      nsAString& aDescription) {
  aDescription.Truncate();

  if (aTextService == CLSID_NULL || aProfile == GUID_NULL) {
    return;
  }

  BSTR description = nullptr;
  HRESULT hr = mInputProcessorProfiles->GetLanguageProfileDescription(
      aTextService, aLangID, aProfile, &description);
  if (FAILED(hr)) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFStaticSink::InitActiveTIPDescription() FAILED "
             "due to GetLanguageProfileDescription() failure, hr=0x%08lX",
             this, hr));
    return;
  }

  if (description && description[0]) {
    aDescription.Assign(description);
  }
  ::SysFreeString(description);
}

bool TSFStaticSink::IsTIPCategoryKeyboard(REFCLSID aTextService, LANGID aLangID,
                                          REFGUID aProfile) {
  if (aTextService == CLSID_NULL || aProfile == GUID_NULL) {
    return false;
  }

  RefPtr<IEnumTfLanguageProfiles> enumLangProfiles;
  HRESULT hr = mInputProcessorProfiles->EnumLanguageProfiles(
      aLangID, getter_AddRefs(enumLangProfiles));
  if (FAILED(hr) || !enumLangProfiles) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFStaticSink::IsTIPCategoryKeyboard(), FAILED "
             "to get language profiles enumerator, hr=0x%08lX",
             this, hr));
    return false;
  }

  TF_LANGUAGEPROFILE profile;
  ULONG fetch = 0;
  while (SUCCEEDED(enumLangProfiles->Next(1, &profile, &fetch)) && fetch) {
    // XXX We're not sure a profile is registered with two or more categories.
    if (profile.clsid == aTextService && profile.guidProfile == aProfile &&
        profile.catid == GUID_TFCAT_TIP_KEYBOARD) {
      return true;
    }
  }
  return false;
}

/******************************************************************/
/* TSFTextStore                                                   */
/******************************************************************/

StaticRefPtr<ITfThreadMgr> TSFTextStore::sThreadMgr;
StaticRefPtr<ITfMessagePump> TSFTextStore::sMessagePump;
StaticRefPtr<ITfKeystrokeMgr> TSFTextStore::sKeystrokeMgr;
StaticRefPtr<ITfDisplayAttributeMgr> TSFTextStore::sDisplayAttrMgr;
StaticRefPtr<ITfCategoryMgr> TSFTextStore::sCategoryMgr;
StaticRefPtr<ITfCompartment> TSFTextStore::sCompartmentForOpenClose;
StaticRefPtr<ITfDocumentMgr> TSFTextStore::sDisabledDocumentMgr;
StaticRefPtr<ITfContext> TSFTextStore::sDisabledContext;
StaticRefPtr<ITfInputProcessorProfiles> TSFTextStore::sInputProcessorProfiles;
StaticRefPtr<TSFTextStore> TSFTextStore::sEnabledTextStore;
const MSG* TSFTextStore::sHandlingKeyMsg = nullptr;
DWORD TSFTextStore::sClientId = 0;
bool TSFTextStore::sIsKeyboardEventDispatched = false;

#define TEXTSTORE_DEFAULT_VIEW (1)

TSFTextStore::TSFTextStore()
    : mEditCookie(0),
      mSinkMask(0),
      mLock(0),
      mLockQueued(0),
      mHandlingKeyMessage(0) {
  // We hope that 5 or more actions don't occur at once.
  mPendingActions.SetCapacity(5);

  MOZ_LOG(gIMELog, LogLevel::Info,
          ("0x%p TSFTextStore::TSFTextStore() SUCCEEDED", this));
}

TSFTextStore::~TSFTextStore() {
  MOZ_LOG(gIMELog, LogLevel::Info,
          ("0x%p TSFTextStore instance is destroyed", this));
}

bool TSFTextStore::Init(nsWindow* aWidget, const InputContext& aContext) {
  MOZ_LOG(gIMELog, LogLevel::Info,
          ("0x%p TSFTextStore::Init(aWidget=0x%p)", this, aWidget));

  if (NS_WARN_IF(!aWidget) || NS_WARN_IF(aWidget->Destroyed())) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFTextStore::Init() FAILED due to being initialized with "
             "destroyed widget",
             this));
    return false;
  }

  if (mDocumentMgr) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFTextStore::Init() FAILED due to already initialized",
             this));
    return false;
  }

  mWidget = aWidget;
  if (NS_WARN_IF(!mWidget)) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFTextStore::Init() FAILED "
             "due to aWidget is nullptr ",
             this));
    return false;
  }
  mDispatcher = mWidget->GetTextEventDispatcher();
  if (NS_WARN_IF(!mDispatcher)) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFTextStore::Init() FAILED "
             "due to aWidget->GetTextEventDispatcher() failure",
             this));
    return false;
  }

  mInPrivateBrowsing = aContext.mInPrivateBrowsing;
  SetInputScope(aContext.mHTMLInputType, aContext.mHTMLInputMode);

  if (aContext.mURI) {
    // We don't need the document URL if it fails, let's ignore the error.
    nsAutoCString spec;
    if (NS_SUCCEEDED(aContext.mURI->GetSpec(spec))) {
      CopyUTF8toUTF16(spec, mDocumentURL);
    }
  }

  // Create document manager
  RefPtr<ITfThreadMgr> threadMgr = sThreadMgr;
  RefPtr<ITfDocumentMgr> documentMgr;
  HRESULT hr = threadMgr->CreateDocumentMgr(getter_AddRefs(documentMgr));
  if (NS_WARN_IF(FAILED(hr))) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFTextStore::Init() FAILED to create ITfDocumentMgr "
             "(0x%08lX)",
             this, hr));
    return false;
  }
  if (NS_WARN_IF(mDestroyed)) {
    MOZ_LOG(
        gIMELog, LogLevel::Error,
        ("0x%p TSFTextStore::Init() FAILED to create ITfDocumentMgr due to "
         "TextStore being destroyed during calling "
         "ITfThreadMgr::CreateDocumentMgr()",
         this));
    return false;
  }
  // Create context and add it to document manager
  RefPtr<ITfContext> context;
  hr = documentMgr->CreateContext(sClientId, 0,
                                  static_cast<ITextStoreACP*>(this),
                                  getter_AddRefs(context), &mEditCookie);
  if (NS_WARN_IF(FAILED(hr))) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFTextStore::Init() FAILED to create the context "
             "(0x%08lX)",
             this, hr));
    return false;
  }
  if (NS_WARN_IF(mDestroyed)) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFTextStore::Init() FAILED to create ITfContext due to "
             "TextStore being destroyed during calling "
             "ITfDocumentMgr::CreateContext()",
             this));
    return false;
  }

  hr = documentMgr->Push(context);
  if (NS_WARN_IF(FAILED(hr))) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFTextStore::Init() FAILED to push the context (0x%08lX)",
             this, hr));
    return false;
  }
  if (NS_WARN_IF(mDestroyed)) {
    MOZ_LOG(gIMELog, LogLevel::Error,
            ("0x%p TSFTextStore::Init() FAILED to create ITfContext due to "
             "TextStore being destroyed during calling ITfDocumentMgr::Push()",
             this));
    documentMgr->Pop(TF_POPF_ALL);
    return false;
  }

  mDocumentMgr = documentMgr;
  mContext = context;

  MOZ_LOG(gIMELog, LogLevel::Info,
          ("0x%p TSFTextStore::Init() succeeded: "
           "mDocumentMgr=0x%p, mContext=0x%p, mEditCookie=0x%08lX",
           this, mDocumentMgr.get(), mContext.get(), mEditCookie));

  return true;
}

void TSFTextStore::Destroy() {
  if (mBeingDestroyed) {
    return;
  }

  MOZ_LOG(gIMELog, LogLevel::Info,
          ("0x%p TSFTextStore::Destroy(), mLock=%s, "
           "mComposition=%s, mHandlingKeyMessage=%u",
           this, GetLockFlagNameStr(mLock).get(),
           ToString(mComposition).c_str(), mHandlingKeyMessage));

  mDestroyed = true;

  // Destroy native caret first because it's not directly related to TSF and
  // there may be another textstore which gets focus.  So, we should avoid
  // to destroy caret after the new one recreates caret.
  IMEHandler::MaybeDestroyNativeCaret();

  if (mLock) {
    mPendingDestroy = true;
    return;
  }

  AutoRestore<bool> savedBeingDestroyed(mBeingDestroyed);
  mBeingDestroyed = true;

  // If there is composition, TSF keeps the composition even after the text
  // store destroyed.  So, we should clear the composition here.
  if (mComposition.isSome()) {
    CommitCompositionInternal(false);
  }

  if (mSink) {
    MOZ_LOG(gIMELog, LogLevel::Debug,
            ("0x%p TSFTextStore::Destroy(), calling "
             "ITextStoreACPSink::OnLayoutChange(TS_LC_DESTROY)...",
             this));
    RefPtr<ITextStoreACPSink> sink = mSink;
    sink->OnLayoutChange(TS_LC_DESTROY, TEXTSTORE_DEFAULT_VIEW);
  }

  // If this is called during handling a keydown or keyup message, we should
  // put off to release TSF objects until it completely finishes since
  // MS-IME for Japanese refers some objects without grabbing them.
  if (!mHandlingKeyMessage) {
    ReleaseTSFObjects();
  }

  MOZ_LOG(gIMELog, LogLevel::Info,
          ("0x%p TSFTextStore::Destroy() succeeded", this));
}

void TSFTextStore::ReleaseTSFObjects() {
  MOZ_ASSERT(!mHandlingKeyMessage);

  MOZ_LOG(gIMELog, LogLevel::Info,
          ("0x%p TSFTextStore::ReleaseTSFObjects()", this));

  mDocumentURL.Truncate();
  mContext = nullptr;
  if (mDocumentMgr) {
    RefPtr<ITfDocumentMgr> documentMgr = mDocumentMgr.forget();
    documentMgr->Pop(TF_POPF_ALL);
  }
  mSink = nullptr;
  mWidget = nullptr;
  mDispatcher = nullptr;

  if (!mMouseTrackers.IsEmpty()) {
    MOZ_LOG(gIMELog, LogLevel::Debug,
            ("0x%p TSFTextStore::ReleaseTSFObjects(), "
             "removing a mouse tracker...",
             this));
    mMouseTrackers.Clear();
  }

  MOZ_LOG(gIMELog, LogLevel::Debug,
          ("0x%p TSFTextStore::ReleaseTSFObjects() completed", this));
}

STDMETHODIMP
TSFTextStore::QueryInterface(REFIID riid, void** ppv) {
  *ppv = nullptr;
  if ((IID_IUnknown == riid) || (IID_ITextStoreACP == riid)) {
    *ppv = static_cast<ITextStoreACP*>(this);
  } else if (IID_ITfContextOwnerCompositionSink == riid) {
    *ppv = static_cast<ITfContextOwnerCompositionSink*>(this);
--> --------------------

--> maximum size reached

--> --------------------

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