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// Copyright 2012 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_SYNCED_TAB_DELEGATE_H__
#define COMPONENTS_SYNC_SESSIONS_SYNCED_TAB_DELEGATE_H__
#include <memory>
#include <string>
#include <vector>
#include "base/functional/callback_forward.h"
#include "components/sessions/core/serialized_navigation_entry.h"
#include "components/sessions/core/session_id.h"
#include "url/gurl.h"
namespace sync_sessions {
class SyncSessionsClient;
// A SyncedTabDelegate is used to insulate the sync code from depending
// directly on WebContents, NavigationController, and the extensions TabHelper.
class SyncedTabDelegate {
public:
virtual ~SyncedTabDelegate();
// Methods from TabContents.
virtual SessionID GetWindowId() const = 0;
// Tab identifier: two tabs with the same ID (even across browser restarts)
// will be considered identical. Tab/session restore may or may not be able
// to restore this value, which means the opposite is not true: having
// distinct IDs does not imply they are distinct tabs.
virtual SessionID GetSessionId() const = 0;
virtual bool IsBeingDestroyed() const = 0;
// The last active time returned can be an approximation (cached value). The
// cached version is done for performance purpose, to avoid sending too many
// updates when the last_active_time changes quickly.
virtual base::Time GetLastActiveTime() = 0;
// Method derived from extensions TabHelper.
virtual std::string GetExtensionAppId() const = 0;
// Methods from NavigationController.
virtual bool IsInitialBlankNavigation() const = 0;
virtual int GetCurrentEntryIndex() const = 0;
virtual int GetEntryCount() const = 0;
virtual GURL GetVirtualURLAtIndex(int i) const = 0;
virtual void GetSerializedNavigationAtIndex(
int i,
sessions::SerializedNavigationEntry* serialized_entry) const = 0;
// Methods to restrict navigation for child account users.
virtual bool ProfileHasChildAccount() const = 0;
virtual const std::vector<
std::unique_ptr<const sessions::SerializedNavigationEntry>>*
GetBlockedNavigations() const = 0;
// Session sync related methods.
virtual bool ShouldSync(SyncSessionsClient* sessions_client) = 0;
// Whether this tab is a placeholder tab. On some platforms, tabs can be
// restored without bringing all their state into memory, and are just
// restored as a placeholder. In that case, the previous synced data from that
// tab should be preserved.
virtual bool IsPlaceholderTab() const = 0;
// Reads placeholder tab data from the associated web contents as a snapshot.
// Must be called only if IsPlaceholderTab() returns true. The nullness of the
// returned delegate indicates if the tab should be reassociated with sync.
virtual std::unique_ptr<SyncedTabDelegate>
ReadPlaceholderTabSnapshotIfItShouldSync(
SyncSessionsClient* sessions_client) = 0;
// Task IDs represent navigations and relationships between navigations. -1
// indicates the Task ID is unknown. A Navigation ID is a Unique ID and
// is stored on a NavigationEntry and SerialiedNavigationEntry.
virtual int64_t GetTaskIdForNavigationId(int nav_id) const = 0;
virtual int64_t GetParentTaskIdForNavigationId(int nav_id) const = 0;
virtual int64_t GetRootTaskIdForNavigationId(int nav_id) const = 0;
protected:
SyncedTabDelegate();
};
} // namespace sync_sessions
#endif // COMPONENTS_SYNC_SESSIONS_SYNCED_TAB_DELEGATE_H__
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