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// Copyright 2023 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_SEGMENTATION_PLATFORM_EMBEDDER_TAB_FETCHER_H_
#define COMPONENTS_SEGMENTATION_PLATFORM_EMBEDDER_TAB_FETCHER_H_
#include <string>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "components/sessions/core/session_id.h"
#include "components/sessions/core/session_types.h"
#include "components/sync_sessions/session_sync_service.h"
#include "url/gurl.h"
namespace content {
class WebContents;
}
class TabAndroid;
namespace segmentation_platform {
// Interface for fetching and iterating over tabs.
class TabFetcher {
public:
// ID that points to a local or foreign tab.
struct TabEntry {
// For tabs from sync session.
TabEntry(SessionID tab_id, const std::string& session_tag);
// For tabs from local tab model.
TabEntry(SessionID tab_id,
content::WebContents* webcontents,
TabAndroid* tab_android);
// Session tag that identifies the session across all devices. Only
// available for synced tabs.
std::string session_tag;
// A tab ID for the tab within the session.
SessionID tab_id;
// An ID for local tab derived from web contents or tab pointer. Do not use
// the webcontents or tab by casting this pointer. Use the FindTab to fetch
// the pointer, since the tab or webcontents could have been destroyed.
raw_ptr<void, DanglingUntriaged> web_contents_data;
raw_ptr<void> tab_android_data;
};
// Represents a local or foreign tab.
struct Tab {
// Local tab's webcontents.
raw_ptr<content::WebContents, DanglingUntriaged> webcontents = nullptr;
// Local tab's pointer, only available on Android.
raw_ptr<TabAndroid> tab_android = nullptr;
// Foreign tab's session data.
raw_ptr<const sessions::SessionTab> session_tab = nullptr;
// URL for the tab.
GURL tab_url;
// Returns the time since last modification of the `tab`. Returns
// TimeDelta::Max() on failure.
base::TimeDelta time_since_modified;
};
explicit TabFetcher(sync_sessions::SessionSyncService* session_sync_service);
virtual ~TabFetcher() = default;
// Appends a list of all remote tabs to `tabs`.
bool FillAllRemoteTabs(std::vector<TabEntry>& tabs);
// Appends a list of all remote tabs to `tabs` loaded after the given
// timestamp.
bool FillAllRemoteTabsAfterTime(std::vector<TabEntry>& tabs,
base::Time tabs_loaded_after_timestamp);
// Appends a list of all local tabs to `tabs`.
bool FillAllLocalTabs(std::vector<TabEntry>& tabs);
// Finds the tab corresponding to the `entry`.
Tab FindTab(const TabEntry& entry);
// Returns the count of remote tabs loaded after the given timestamp till now.
size_t GetRemoteTabsCountAfterTime(base::Time tabs_loaded_after_timestamp);
// Returns the modified time for the latest remote sync session if sync is
// enabled.
std::optional<base::Time> GetLatestRemoteSessionModifiedTime();
protected:
// Fills all the local tabs from the tab models in `tabs`.
virtual bool FillAllLocalTabsFromTabModel(std::vector<TabEntry>& tabs);
// Fills all the local tabs from the sync sessions database.
bool FillAllLocalTabsFromSyncSessions(std::vector<TabEntry>& tabs);
// Returns the local tab corresponding to `entry`. If the tab was closed, then
// returns an empty Tab.
virtual Tab FindLocalTab(const TabEntry& entry);
private:
const raw_ptr<sync_sessions::SessionSyncService> session_sync_service_;
};
} // namespace segmentation_platform
#endif // COMPONENTS_SEGMENTATION_PLATFORM_EMBEDDER_TAB_FETCHER_H_
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