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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SESSIONS_CONTENT_CONTENT_SERIALIZED_NAVIGATION_DRIVER_H_
#define COMPONENTS_SESSIONS_CONTENT_CONTENT_SERIALIZED_NAVIGATION_DRIVER_H_
#include <map>
#include <memory>
#include <string>
#include "components/sessions/content/extended_info_handler.h"
#include "components/sessions/core/serialized_navigation_driver.h"
#include "components/sessions/core/sessions_export.h"
namespace base {
template <typename T> struct DefaultSingletonTraits;
}
namespace sessions {
// Provides an implementation of SerializedNavigationDriver that is backed by
// content classes.
class SESSIONS_EXPORT ContentSerializedNavigationDriver
: public SerializedNavigationDriver {
public:
ContentSerializedNavigationDriver(const ContentSerializedNavigationDriver&) =
delete;
ContentSerializedNavigationDriver& operator=(
const ContentSerializedNavigationDriver&) = delete;
~ContentSerializedNavigationDriver() override;
// Returns the singleton ContentSerializedNavigationDriver. Almost all
// callers should use SerializedNavigationDriver::Get() instead.
static ContentSerializedNavigationDriver* GetInstance();
// Allows an embedder to override the instance returned by GetInstance().
static void SetInstance(ContentSerializedNavigationDriver* instance);
// SerializedNavigationDriver implementation.
int GetDefaultReferrerPolicy() const override;
std::string GetSanitizedPageStateForPickle(
const SerializedNavigationEntry* navigation) const override;
void Sanitize(SerializedNavigationEntry* navigation) const override;
std::string StripReferrerFromPageState(
const std::string& page_state) const override;
// Registers a handler that is used to read and write the extended
// info stored in SerializedNavigationEntry. As part of serialization |key|
// is written to disk, as such once a handler is registered it should always
// be registered to the same key.
void RegisterExtendedInfoHandler(
const std::string& key,
std::unique_ptr<ExtendedInfoHandler> handler);
using ExtendedInfoHandlerMap =
std::map<std::string, std::unique_ptr<ExtendedInfoHandler>>;
// Returns all the registered handlers to deal with the extended info.
const ExtendedInfoHandlerMap& GetAllExtendedInfoHandlers() const;
protected:
ContentSerializedNavigationDriver();
private:
friend struct base::DefaultSingletonTraits<ContentSerializedNavigationDriver>;
friend class ContentSerializedNavigationBuilderTest;
ExtendedInfoHandlerMap extended_info_handler_map_;
};
} // namespace sessions
#endif // COMPONENTS_SESSIONS_CONTENT_CONTENT_SERIALIZED_NAVIGATION_DRIVER_H_
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