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-rw-r--r--accessible/base/AccAttributes.cpp271
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;
+}