diff options
Diffstat (limited to 'accessible/base/AccAttributes.cpp')
| -rw-r--r-- | accessible/base/AccAttributes.cpp | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/accessible/base/AccAttributes.cpp b/accessible/base/AccAttributes.cpp new file mode 100644 index 0000000000..2c557fe66b --- /dev/null +++ b/accessible/base/AccAttributes.cpp @@ -0,0 +1,271 @@ +/* -*- 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 "AccAttributes.h" +#include "StyleInfo.h" +#include "mozilla/Maybe.h" +#include "mozilla/ToString.h" +#include "nsAtom.h" + +using namespace mozilla::a11y; + +bool AccAttributes::GetAttribute(nsAtom* aAttrName, + nsAString& aAttrValue) const { + if (auto value = mData.Lookup(aAttrName)) { + StringFromValueAndName(aAttrName, *value, aAttrValue); + return true; + } + + return false; +} + +void AccAttributes::StringFromValueAndName(nsAtom* aAttrName, + const AttrValueType& aValue, + nsAString& aValueString) { + aValueString.Truncate(); + + aValue.match( + [&aValueString](const bool& val) { + aValueString.Assign(val ? u"true" : u"false"); + }, + [&aValueString](const float& val) { + aValueString.AppendFloat(val * 100); + aValueString.Append(u"%"); + }, + [&aValueString](const double& val) { aValueString.AppendFloat(val); }, + [&aValueString](const int32_t& val) { aValueString.AppendInt(val); }, + [&aValueString](const RefPtr<nsAtom>& val) { + val->ToString(aValueString); + }, + [&aValueString](const nsTArray<int32_t>& val) { + if (const size_t len = val.Length()) { + for (size_t i = 0; i < len - 1; i++) { + aValueString.AppendInt(val[i]); + aValueString.Append(u", "); + } + aValueString.AppendInt(val[len - 1]); + } else { + // The array is empty + NS_WARNING( + "Hmm, should we have used a DeleteEntry() for this instead?"); + aValueString.Append(u"[ ]"); + } + }, + [&aValueString](const CSSCoord& val) { + aValueString.AppendFloat(val); + aValueString.Append(u"px"); + }, + [&aValueString](const FontSize& val) { + aValueString.AppendInt(val.mValue); + aValueString.Append(u"pt"); + }, + [&aValueString](const Color& val) { + StyleInfo::FormatColor(val.mValue, aValueString); + }, + [&aValueString](const DeleteEntry& val) { + aValueString.Append(u"-delete-entry-"); + }, + [&aValueString](const UniquePtr<nsString>& val) { + aValueString.Assign(*val); + }, + [&aValueString](const RefPtr<AccAttributes>& val) { + aValueString.Assign(u"AccAttributes{...}"); + }, + [&aValueString](const uint64_t& val) { aValueString.AppendInt(val); }, + [&aValueString](const UniquePtr<AccGroupInfo>& val) { + aValueString.Assign(u"AccGroupInfo{...}"); + }, + [&aValueString](const UniquePtr<gfx::Matrix4x4>& val) { + aValueString.AppendPrintf("Matrix4x4=%s", ToString(*val).c_str()); + }, + [&aValueString](const nsTArray<uint64_t>& val) { + if (const size_t len = val.Length()) { + for (size_t i = 0; i < len - 1; i++) { + aValueString.AppendInt(val[i]); + aValueString.Append(u", "); + } + aValueString.AppendInt(val[len - 1]); + } else { + // The array is empty + NS_WARNING( + "Hmm, should we have used a DeleteEntry() for this instead?"); + aValueString.Append(u"[ ]"); + } + }); +} + +void AccAttributes::Update(AccAttributes* aOther) { + for (auto iter = aOther->mData.Iter(); !iter.Done(); iter.Next()) { + if (iter.Data().is<DeleteEntry>()) { + mData.Remove(iter.Key()); + } else { + mData.InsertOrUpdate(iter.Key(), std::move(iter.Data())); + } + iter.Remove(); + } +} + +bool AccAttributes::Equal(const AccAttributes* aOther) const { + if (Count() != aOther->Count()) { + return false; + } + for (auto iter = mData.ConstIter(); !iter.Done(); iter.Next()) { + const auto otherEntry = aOther->mData.Lookup(iter.Key()); + if (!otherEntry) { + return false; + } + if (iter.Data().is<UniquePtr<nsString>>()) { + // Because we store nsString in a UniquePtr, we must handle it specially + // so we compare the string and not the pointer. + if (!otherEntry->is<UniquePtr<nsString>>()) { + return false; + } + const auto& thisStr = iter.Data().as<UniquePtr<nsString>>(); + const auto& otherStr = otherEntry->as<UniquePtr<nsString>>(); + if (*thisStr != *otherStr) { + return false; + } + } else if (iter.Data() != otherEntry.Data()) { + return false; + } + } + return true; +} + +void AccAttributes::CopyTo(AccAttributes* aDest) const { + for (auto iter = mData.ConstIter(); !iter.Done(); iter.Next()) { + iter.Data().match( + [&iter, &aDest](const bool& val) { + aDest->mData.InsertOrUpdate(iter.Key(), AsVariant(val)); + }, + [&iter, &aDest](const float& val) { + aDest->mData.InsertOrUpdate(iter.Key(), AsVariant(val)); + }, + [&iter, &aDest](const double& val) { + aDest->mData.InsertOrUpdate(iter.Key(), AsVariant(val)); + }, + [&iter, &aDest](const int32_t& val) { + aDest->mData.InsertOrUpdate(iter.Key(), AsVariant(val)); + }, + [&iter, &aDest](const RefPtr<nsAtom>& val) { + aDest->mData.InsertOrUpdate(iter.Key(), AsVariant(val)); + }, + [](const nsTArray<int32_t>& val) { + // We don't copy arrays. + MOZ_ASSERT_UNREACHABLE( + "Trying to copy an AccAttributes containing an array"); + }, + [&iter, &aDest](const CSSCoord& val) { + aDest->mData.InsertOrUpdate(iter.Key(), AsVariant(val)); + }, + [&iter, &aDest](const FontSize& val) { + aDest->mData.InsertOrUpdate(iter.Key(), AsVariant(val)); + }, + [&iter, &aDest](const Color& val) { + aDest->mData.InsertOrUpdate(iter.Key(), AsVariant(val)); + }, + [](const DeleteEntry& val) { + // We don't copy DeleteEntry. + MOZ_ASSERT_UNREACHABLE( + "Trying to copy an AccAttributes containing a DeleteEntry"); + }, + [&iter, &aDest](const UniquePtr<nsString>& val) { + aDest->SetAttributeStringCopy(iter.Key(), *val); + }, + [](const RefPtr<AccAttributes>& val) { + // We don't copy nested AccAttributes. + MOZ_ASSERT_UNREACHABLE( + "Trying to copy an AccAttributes containing an AccAttributes"); + }, + [&iter, &aDest](const uint64_t& val) { + aDest->mData.InsertOrUpdate(iter.Key(), AsVariant(val)); + }, + [](const UniquePtr<AccGroupInfo>& val) { + MOZ_ASSERT_UNREACHABLE( + "Trying to copy an AccAttributes containing an AccGroupInfo"); + }, + [](const UniquePtr<gfx::Matrix4x4>& val) { + MOZ_ASSERT_UNREACHABLE( + "Trying to copy an AccAttributes containing a matrix"); + }, + [](const nsTArray<uint64_t>& val) { + // We don't copy arrays. + MOZ_ASSERT_UNREACHABLE( + "Trying to copy an AccAttributes containing an array"); + }); + } +} + +#ifdef A11Y_LOG +void AccAttributes::DebugPrint(const char* aPrefix, + const AccAttributes& aAttributes) { + nsAutoString prettyString; + prettyString.AssignLiteral("{\n"); + for (const auto& iter : aAttributes) { + nsAutoString name; + iter.NameAsString(name); + + nsAutoString value; + iter.ValueAsString(value); + prettyString.AppendLiteral(" "); + prettyString.Append(name); + prettyString.AppendLiteral(": "); + prettyString.Append(value); + prettyString.AppendLiteral("\n"); + } + + prettyString.AppendLiteral("}"); + printf("%s %s\n", aPrefix, NS_ConvertUTF16toUTF8(prettyString).get()); +} +#endif + +size_t AccAttributes::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) { + size_t size = + aMallocSizeOf(this) + mData.ShallowSizeOfExcludingThis(aMallocSizeOf); + + for (auto iter : *this) { + size += iter.SizeOfExcludingThis(aMallocSizeOf); + } + + return size; +} + +size_t AccAttributes::Entry::SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) { + size_t size = 0; + + // We don't count the size of Name() since it's counted by the atoms table + // memory reporter. + + if (mValue->is<nsTArray<int32_t>>()) { + size += mValue->as<nsTArray<int32_t>>().ShallowSizeOfExcludingThis( + aMallocSizeOf); + } else if (mValue->is<UniquePtr<nsString>>()) { + // String data will never be shared. + size += mValue->as<UniquePtr<nsString>>()->SizeOfIncludingThisIfUnshared( + aMallocSizeOf); + } else if (mValue->is<RefPtr<AccAttributes>>()) { + size += + mValue->as<RefPtr<AccAttributes>>()->SizeOfIncludingThis(aMallocSizeOf); + } else if (mValue->is<UniquePtr<AccGroupInfo>>()) { + size += mValue->as<UniquePtr<AccGroupInfo>>()->SizeOfIncludingThis( + aMallocSizeOf); + } else if (mValue->is<UniquePtr<gfx::Matrix4x4>>()) { + size += aMallocSizeOf(mValue->as<UniquePtr<gfx::Matrix4x4>>().get()); + } else if (mValue->is<nsTArray<uint64_t>>()) { + size += mValue->as<nsTArray<uint64_t>>().ShallowSizeOfExcludingThis( + aMallocSizeOf); + } else { + // This type is stored directly and already counted or is an atom and + // stored and counted in the atoms table. + // Assert that we have exhausted all the remaining variant types. + MOZ_ASSERT(mValue->is<RefPtr<nsAtom>>() || mValue->is<bool>() || + mValue->is<float>() || mValue->is<double>() || + mValue->is<int32_t>() || mValue->is<uint64_t>() || + mValue->is<CSSCoord>() || mValue->is<FontSize>() || + mValue->is<Color>() || mValue->is<DeleteEntry>()); + } + + return size; +} |