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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/base/interaction/element_identifier.h"
#include <string_view>
#include "base/check.h"
#include "base/compiler_specific.h"
#include "base/no_destructor.h"
namespace ui {
std::string ElementIdentifier::GetName() const {
if (!handle_)
return std::string();
RegisterKnownIdentifier(*this);
return handle_->name;
}
intptr_t ElementIdentifier::GetRawValue() const {
if (!handle_)
return 0;
RegisterKnownIdentifier(*this);
return reinterpret_cast<intptr_t>(handle_);
}
// static
ElementIdentifier ElementIdentifier::FromRawValue(intptr_t value) {
if (!value)
return ElementIdentifier();
const auto* impl =
reinterpret_cast<const internal::ElementIdentifierImpl*>(value);
CHECK(GetKnownIdentifiers().contains(impl));
return ElementIdentifier(impl);
}
// static
ElementIdentifier ElementIdentifier::FromName(const char* name) {
for (const auto* impl : GetKnownIdentifiers()) {
if (std::string_view(impl->name) == name) {
return ElementIdentifier(impl);
}
}
return ElementIdentifier();
}
// static
void ElementIdentifier::RegisterKnownIdentifier(
ElementIdentifier element_identifier) {
CHECK(element_identifier);
#if DCHECK_IS_ON()
// Enforce uniqueness in DCHECK builds.
const ElementIdentifier existing = FromName(element_identifier.handle_->name);
DCHECK(!existing || existing == element_identifier)
<< "Duplicate identifier: " << element_identifier.handle_->name;
#endif
GetKnownIdentifiers().insert(element_identifier.handle_);
}
// static
ElementIdentifier::KnownIdentifiers& ElementIdentifier::GetKnownIdentifiers() {
static base::NoDestructor<KnownIdentifiers> known_identifiers;
return *known_identifiers.get();
}
COMPONENT_EXPORT(UI_BASE_INTERACTION)
void PrintTo(ElementIdentifier element_identifier, std::ostream* os) {
*os << "ElementIdentifier " << element_identifier.GetName();
}
COMPONENT_EXPORT(UI_BASE_INTERACTION)
void PrintTo(ElementContext element_context, std::ostream* os) {
*os << "ElementContext " << static_cast<const void*>(element_context);
}
COMPONENT_EXPORT(UI_BASE_INTERACTION)
std::ostream& operator<<(std::ostream& os,
ElementIdentifier element_identifier) {
PrintTo(element_identifier, &os);
return os;
}
COMPONENT_EXPORT(UI_BASE_INTERACTION)
std::ostream& operator<<(std::ostream& os, ElementContext element_context) {
PrintTo(element_context, &os);
return os;
}
} // namespace ui
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