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// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_WEBUI_FOREIGN_SESSION_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_FOREIGN_SESSION_HANDLER_H_
#include <string>
#include <vector>
#include "base/macros.h"
#include "base/scoped_observer.h"
#include "base/time/time.h"
#include "chrome/browser/sessions/session_service.h"
#include "components/sync/driver/sync_service_observer.h"
#include "components/sync_sessions/open_tabs_ui_delegate.h"
#include "content/public/browser/web_ui.h"
#include "content/public/browser/web_ui_message_handler.h"
namespace syncer {
class SyncService;
}
namespace user_prefs {
class PrefRegistrySyncable;
}
namespace browser_sync {
class ForeignSessionHandler : public content::WebUIMessageHandler,
public syncer::SyncServiceObserver {
public:
// WebUIMessageHandler implementation.
void RegisterMessages() override;
ForeignSessionHandler();
~ForeignSessionHandler() override;
static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
static void OpenForeignSessionTab(content::WebUI* web_ui,
const std::string& session_string_value,
int window_num,
SessionID tab_id,
const WindowOpenDisposition& disposition);
static void OpenForeignSessionWindows(content::WebUI* web_ui,
const std::string& session_string_value,
int window_num);
// Returns a pointer to the current session model associator or NULL.
static sync_sessions::OpenTabsUIDelegate* GetOpenTabsUIDelegate(
content::WebUI* web_ui);
private:
// syncer::SyncServiceObserver:
void OnSyncConfigurationCompleted(syncer::SyncService* sync) override;
void OnForeignSessionUpdated(syncer::SyncService* sync) override;
// Returns a string used to show the user when a session was last modified.
base::string16 FormatSessionTime(const base::Time& time);
// Determines which session is to be opened, and then calls
// OpenForeignSession, to begin the process of opening a new browser window.
// This is a javascript callback handler.
void HandleOpenForeignSession(const base::ListValue* args);
// Determines whether foreign sessions should be obtained from the sync model.
// This is a javascript callback handler, and it is also called when the sync
// model has changed and the new tab page needs to reflect the changes.
void HandleGetForeignSessions(const base::ListValue* args);
// Delete a foreign session. This will remove it from the list of foreign
// sessions on all devices. It will reappear if the session is re-activated
// on the original device.
// This is a javascript callback handler.
void HandleDeleteForeignSession(const base::ListValue* args);
void HandleSetForeignSessionCollapsed(const base::ListValue* args);
// ScopedObserver used to observe the ProfileSyncService.
ScopedObserver<syncer::SyncService, syncer::SyncServiceObserver>
scoped_observer_;
// The time at which this WebUI was created. Used to calculate how long
// the WebUI was present before the sessions data was visible.
base::TimeTicks load_attempt_time_;
DISALLOW_COPY_AND_ASSIGN(ForeignSessionHandler);
};
} // namespace browser_sync
#endif // CHROME_BROWSER_UI_WEBUI_FOREIGN_SESSION_HANDLER_H_
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