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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/font_unique_name_lookup/font_unique_name_lookup_service.h"
#include "base/check.h"
#include "base/feature_list.h"
#include "base/files/file_path.h"
#include "base/no_destructor.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/thread_pool.h"
#include "content/browser/font_unique_name_lookup/font_unique_name_lookup_android.h"
#include "content/common/features.h"
#include "mojo/public/cpp/bindings/callback_helpers.h"
#include "mojo/public/cpp/bindings/self_owned_receiver.h"
namespace content {
FontUniqueNameLookupService::FontUniqueNameLookupService()
: font_unique_name_lookup_(::content::FontUniqueNameLookup::GetInstance()) {
DCHECK(base::FeatureList::IsEnabled(features::kFontSrcLocalMatching));
}
FontUniqueNameLookupService::~FontUniqueNameLookupService() {}
// static
void FontUniqueNameLookupService::Create(
mojo::PendingReceiver<blink::mojom::FontUniqueNameLookup> receiver) {
mojo::MakeSelfOwnedReceiver(std::make_unique<FontUniqueNameLookupService>(),
std::move(receiver));
}
// static
scoped_refptr<base::SequencedTaskRunner>
FontUniqueNameLookupService::GetTaskRunner() {
static base::NoDestructor<scoped_refptr<base::SequencedTaskRunner>> runner(
base::ThreadPool::CreateSequencedTaskRunner(
{base::MayBlock(), base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN,
base::TaskPriority::USER_BLOCKING}));
return *runner;
}
void FontUniqueNameLookupService::GetUniqueNameLookupTable(
GetUniqueNameLookupTableCallback callback) {
DCHECK(GetTaskRunner()->RunsTasksInCurrentSequence());
if (font_unique_name_lookup_->IsValid()) {
std::move(callback).Run(font_unique_name_lookup_->DuplicateMemoryRegion());
} else {
font_unique_name_lookup_->QueueShareMemoryRegionWhenReady(
GetTaskRunner(), std::move(callback));
}
}
void FontUniqueNameLookupService::GetUniqueNameLookupTableIfAvailable(
GetUniqueNameLookupTableIfAvailableCallback callback) {
DCHECK(GetTaskRunner()->RunsTasksInCurrentSequence());
base::ReadOnlySharedMemoryRegion invalid_region;
callback = mojo::WrapCallbackWithDefaultInvokeIfNotRun(
std::move(callback), false, std::move(invalid_region));
if (!font_unique_name_lookup_->IsValid())
return;
std::move(callback).Run(true,
font_unique_name_lookup_->DuplicateMemoryRegion());
}
} // namespace content
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