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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_CORE_COMMAND_STORAGE_MANAGER_DELEGATE_H_
#define COMPONENTS_SESSIONS_CORE_COMMAND_STORAGE_MANAGER_DELEGATE_H_
#include <stddef.h>
#include <vector>
namespace sessions {
// The CommandStorageManagerDelegate decouples the CommandStorageManager from
// chrome/content dependencies.
class CommandStorageManagerDelegate {
public:
CommandStorageManagerDelegate() = default;
// Returns true if save operations can be performed as a delayed task - which
// is usually only used by unit tests.
virtual bool ShouldUseDelayedSave() = 0;
// Called when commands are about to be written to disc.
virtual void OnWillSaveCommands() {}
// Called when a new crypto key has been generated. This is only called if
// CommandStorageManager was configured to enable encryption.
virtual void OnGeneratedNewCryptoKey(const std::vector<uint8_t>& key) {}
// Called if there is an error in writing commands to the file. The
// expectation is that once this is called, the delegate calls
// set_pending_reset(true) and adds commands to restore the current state.
virtual void OnErrorWritingSessionCommands() = 0;
protected:
virtual ~CommandStorageManagerDelegate() = default;
};
} // namespace sessions
#endif // COMPONENTS_SESSIONS_CORE_COMMAND_STORAGE_MANAGER_DELEGATE_H_
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