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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.
#ifndef COMPONENTS_SYNC_SESSIONS_LOCAL_SESSION_EVENT_HANDLER_IMPL_H_
#define COMPONENTS_SYNC_SESSIONS_LOCAL_SESSION_EVENT_HANDLER_IMPL_H_
#include <memory>
#include <set>
#include <string>
#include "base/memory/raw_ptr.h"
#include "base/time/time.h"
#include "components/sessions/core/session_id.h"
#include "components/sessions/core/session_types.h"
#include "components/sync_sessions/local_session_event_router.h"
#include "components/sync_sessions/synced_session.h"
namespace sync_pb {
class SessionSpecifics;
class SessionTab;
} // namespace sync_pb
namespace sync_sessions {
class SyncedSessionTracker;
class SyncedTabDelegate;
class SyncSessionsClient;
// Class responsible for propagating local session changes to the sessions
// model including SyncedSessionTracker (in-memory representation) as well as
// the persistency and sync layers (via delegate).
class LocalSessionEventHandlerImpl : public LocalSessionEventHandler {
public:
class WriteBatch {
public:
WriteBatch();
WriteBatch(const WriteBatch&) = delete;
WriteBatch& operator=(const WriteBatch&) = delete;
virtual ~WriteBatch();
virtual void Delete(int tab_node_id) = 0;
virtual void Put(std::unique_ptr<sync_pb::SessionSpecifics> specifics) = 0;
virtual void Commit() = 0;
};
class Delegate {
public:
virtual ~Delegate();
virtual std::unique_ptr<WriteBatch> CreateLocalSessionWriteBatch() = 0;
virtual bool IsTabNodeUnsynced(int tab_node_id) = 0;
// Analogous to SessionsGlobalIdMapper.
virtual void TrackLocalNavigationId(base::Time timestamp,
int unique_id) = 0;
};
// Raw pointers must not be null and all pointees must outlive this object.
// A side effect of this constructor could include (unless session restore is
// ongoing) the creation of a write batch (via |delegate| and committing
// changes).
LocalSessionEventHandlerImpl(Delegate* delegate,
SyncSessionsClient* sessions_client,
SyncedSessionTracker* session_tracker,
bool is_new_session);
LocalSessionEventHandlerImpl(const LocalSessionEventHandlerImpl&) = delete;
LocalSessionEventHandlerImpl& operator=(const LocalSessionEventHandlerImpl&) =
delete;
~LocalSessionEventHandlerImpl() override;
// LocalSessionEventHandler implementation.
void OnSessionRestoreComplete() override;
void OnLocalTabModified(SyncedTabDelegate* modified_tab) override;
void OnLocalTabClosed() override;
// Returns tab specifics from |tab_delegate|. Exposed publicly for testing.
sync_pb::SessionTab GetTabSpecificsFromDelegateForTest(
SyncedTabDelegate& tab_delegate) const;
private:
enum ReloadTabsOption { RELOAD_TABS, DONT_RELOAD_TABS };
void CleanupLocalTabs(WriteBatch* batch);
void AssociateWindows(ReloadTabsOption option,
WriteBatch* batch,
bool is_session_restore);
// Loads and reassociates the local tab referenced in |tab|.
// |batch| must not be null. This function will append necessary
// changes for processing later.
void AssociateTab(SyncedTabDelegate* const tab, WriteBatch* batch);
// Set |session_tab| from |tab_delegate|.
sync_pb::SessionTab GetTabSpecificsFromDelegate(
SyncedTabDelegate& tab_delegate) const;
bool AssociatePlaceholderTab(std::unique_ptr<SyncedTabDelegate> snapshot,
WriteBatch* batch);
// Injected dependencies (not owned).
const raw_ptr<Delegate> delegate_;
const raw_ptr<SyncSessionsClient> sessions_client_;
const raw_ptr<SyncedSessionTracker> session_tracker_;
std::string current_session_tag_;
};
} // namespace sync_sessions
#endif // COMPONENTS_SYNC_SESSIONS_LOCAL_SESSION_EVENT_HANDLER_IMPL_H_
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