tor-browser

IPCTypes.h (6036B)

---

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */

#ifndef mozilla_a11y_IPCTypes_h
#define mozilla_a11y_IPCTypes_h

#ifdef ACCESSIBILITY
#  include "mozilla/a11y/AccAttributes.h"
#  include "mozilla/a11y/AccTypes.h"
#  include "mozilla/a11y/CacheConstants.h"
#  include "mozilla/a11y/Role.h"
#  include "mozilla/a11y/AccGroupInfo.h"
#  include "mozilla/GfxMessageUtils.h"
#  include "ipc/EnumSerializer.h"
#  include "ipc/IPCMessageUtilsSpecializations.h"
#  include "ipc/nsGUIEventIPC.h"

namespace IPC {

template <>
struct ParamTraits<mozilla::a11y::role>
   : public ContiguousEnumSerializerInclusive<mozilla::a11y::role,
                                              mozilla::a11y::role::NOTHING,
                                              mozilla::a11y::role::LAST_ROLE> {
};

template <>
struct ParamTraits<mozilla::a11y::AccType>
   : public ContiguousEnumSerializerInclusive<
         mozilla::a11y::AccType, mozilla::a11y::AccType::eNoType,
         mozilla::a11y::AccType::eLastAccType> {};

template <>
struct ParamTraits<mozilla::a11y::AccGenericType>
   : public BitFlagsEnumSerializer<
         mozilla::a11y::AccGenericType,
         mozilla::a11y::AccGenericType::eAllGenericTypes> {};

template <>
struct ParamTraits<mozilla::a11y::CacheUpdateType>
   : public ContiguousEnumSerializerInclusive<
         mozilla::a11y::CacheUpdateType,
         mozilla::a11y::CacheUpdateType::Initial,
         mozilla::a11y::CacheUpdateType::Update> {};

template <>
struct ParamTraits<mozilla::a11y::FontSize> {
 typedef mozilla::a11y::FontSize paramType;

 static void Write(MessageWriter* aWriter, const paramType& aParam) {
   WriteParam(aWriter, aParam.mValue);
 }

 static bool Read(MessageReader* aReader, paramType* aResult) {
   return ReadParam(aReader, &(aResult->mValue));
 }
};

template <>
struct ParamTraits<mozilla::a11y::DeleteEntry> {
 typedef mozilla::a11y::DeleteEntry paramType;

 static void Write(MessageWriter* aWriter, const paramType& aParam) {
   WriteParam(aWriter, aParam.mValue);
 }

 static bool Read(MessageReader* aReader, paramType* aResult) {
   return ReadParam(aReader, &(aResult->mValue));
 }
};

template <>
struct ParamTraits<mozilla::a11y::AccGroupInfo> {
 typedef mozilla::a11y::AccGroupInfo paramType;

 static void Write(MessageWriter* aWriter, const paramType& aParam) {
   MOZ_ASSERT_UNREACHABLE("Cannot serialize AccGroupInfo");
 }

 static bool Read(MessageReader* aReader, paramType* aResult) {
   MOZ_ASSERT_UNREACHABLE("Cannot de-serialize AccGroupInfo");
   return false;
 }
};

template <>
struct ParamTraits<mozilla::a11y::Color> {
 typedef mozilla::a11y::Color paramType;

 static void Write(MessageWriter* aWriter, const paramType& aParam) {
   WriteParam(aWriter, aParam.mValue);
 }

 static bool Read(MessageReader* aReader, paramType* aResult) {
   return ReadParam(aReader, &(aResult->mValue));
 }
};

template <>
struct ParamTraits<mozilla::a11y::TextOffsetAttribute> {
 typedef mozilla::a11y::TextOffsetAttribute paramType;

 static void Write(MessageWriter* aWriter, const paramType& aParam) {
   WriteParam(aWriter, aParam.mStartOffset);
   WriteParam(aWriter, aParam.mEndOffset);
   WriteParam(aWriter, aParam.mAttribute);
 }

 static bool Read(MessageReader* aReader, paramType* aResult) {
   return ReadParam(aReader, &(aResult->mStartOffset)) &&
          ReadParam(aReader, &(aResult->mEndOffset)) &&
          ReadParam(aReader, &(aResult->mAttribute));
 }
};

template <>
struct ParamTraits<mozilla::a11y::AccAttributes*> {
 typedef mozilla::a11y::AccAttributes paramType;

 static void Write(MessageWriter* aWriter, const paramType* aParam) {
   if (!aParam) {
     WriteParam(aWriter, true);
     return;
   }

   WriteParam(aWriter, false);
   uint32_t count = aParam->mData.Count();
   WriteParam(aWriter, count);
   for (auto iter = aParam->mData.ConstIter(); !iter.Done(); iter.Next()) {
     RefPtr<nsAtom> key = iter.Key();
     WriteParam(aWriter, key);
     const paramType::AttrValueType& data = iter.Data();
     WriteParam(aWriter, data);
   }
 }

 static bool Read(MessageReader* aReader, RefPtr<paramType>* aResult) {
   bool isNull = false;
   if (!ReadParam(aReader, &isNull)) {
     return false;
   }

   if (isNull) {
     *aResult = nullptr;
     return true;
   }

   *aResult = mozilla::MakeRefPtr<mozilla::a11y::AccAttributes>();
   uint32_t count;
   if (!ReadParam(aReader, &count)) {
     return false;
   }
   for (uint32_t i = 0; i < count; ++i) {
     RefPtr<nsAtom> key;
     if (!ReadParam(aReader, &key)) {
       return false;
     }
     paramType::AttrValueType val(0);
     if (!ReadParam(aReader, &val)) {
       return false;
     }
     (*aResult)->mData.InsertOrUpdate(key, std::move(val));
   }
   return true;
 }
};

}  // namespace IPC
#else
namespace mozilla {
namespace a11y {
typedef uint32_t role;
}  // namespace a11y
}  // namespace mozilla
#endif  // ACCESSIBILITY

/**
* Since IPDL does not support preprocessing, this header file allows us to
* define types used by PDocAccessible differently depending on platform.
*/

#if defined(MOZ_WIDGET_COCOA)
#  if defined(ACCESSIBILITY)
#    include "mozilla/a11y/PlatformExtTypes.h"
namespace IPC {

template <>
struct ParamTraits<mozilla::a11y::EWhichRange>
   : public ContiguousEnumSerializerInclusive<
         mozilla::a11y::EWhichRange, mozilla::a11y::EWhichRange::eLeftWord,
         mozilla::a11y::EWhichRange::eStyle> {};

}  // namespace IPC

#  else
namespace mozilla {
namespace a11y {
typedef uint32_t EWhichRange;
}  // namespace a11y
}  // namespace mozilla
#  endif  // defined(ACCESSIBILITY)
#endif    // defined(MOZ_WIDGET_COCOA)

#endif  // mozilla_a11y_IPCTypes_h