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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/offline_pages/offline_page_info_handler.h"
#include "base/strings/string_util.h"
#include "chrome/browser/offline_pages/offline_page_utils.h"
#include "components/offline_pages/core/request_header/offline_page_header.h"
#include "components/sessions/content/content_serialized_navigation_driver.h"
#include "content/public/browser/navigation_entry.h"
namespace offline_pages {
namespace {
const char kOfflinePageInfoKey[] = "offline";
}
// static
void OfflinePageInfoHandler::Register() {
std::unique_ptr<OfflinePageInfoHandler> instance(new OfflinePageInfoHandler);
sessions::ContentSerializedNavigationDriver::GetInstance()
->RegisterExtendedInfoHandler(kOfflinePageInfoKey, std::move(instance));
}
OfflinePageInfoHandler::OfflinePageInfoHandler() = default;
OfflinePageInfoHandler::~OfflinePageInfoHandler() = default;
std::string OfflinePageInfoHandler::GetExtendedInfo(
content::NavigationEntry* entry) const {
std::string header_value =
OfflinePageUtils::ExtractOfflineHeaderValueFromNavigationEntry(entry);
if (header_value.empty())
return std::string();
OfflinePageHeader header(header_value);
if (!header.need_to_persist)
return std::string();
return header_value;
}
void OfflinePageInfoHandler::RestoreExtendedInfo(
const std::string& info,
content::NavigationEntry* entry) {
OfflinePageHeader header(info);
// Some sanity check.
if (header.reason == OfflinePageHeader::Reason::NONE ||
!header.need_to_persist)
return;
entry->AddExtraHeaders(header.GetCompleteHeaderString());
}
} // namespace offline_pages
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