1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef CHROME_BROWSER_UI_WEBUI_NTP_RECENTLY_CLOSED_TABS_HANDLER_H_
6 #define CHROME_BROWSER_UI_WEBUI_NTP_RECENTLY_CLOSED_TABS_HANDLER_H_
8 #include "base/values.h"
9 #include "chrome/browser/sessions/tab_restore_service.h"
10 #include "chrome/browser/sessions/tab_restore_service_observer.h"
11 #include "content/public/browser/web_ui_message_handler.h"
13 class TabRestoreService;
15 class RecentlyClosedTabsHandler : public content::WebUIMessageHandler,
16 public TabRestoreServiceObserver {
18 RecentlyClosedTabsHandler() : tab_restore_service_(NULL) {}
19 ~RecentlyClosedTabsHandler() override;
21 // WebUIMessageHandler implementation.
22 void RegisterMessages() override;
24 // Callback for the "reopenTab" message. Rewrites the history of the
25 // currently displayed tab to be the one in TabRestoreService with a
26 // history of a session passed in through the content pointer.
27 void HandleReopenTab(const base::ListValue* args);
29 // Callback for the "getRecentlyClosedTabs" message.
30 void HandleGetRecentlyClosedTabs(const base::ListValue* args);
32 // Callback for the "clearRecentlyClosed" message.
33 void HandleClearRecentlyClosed(const base::ListValue* args);
35 // Observer callback for TabRestoreServiceObserver. Sends data on
36 // recently closed tabs to the javascript side of this page to
37 // display to the user.
38 void TabRestoreServiceChanged(TabRestoreService* service) override;
40 // Observer callback to notice when our associated TabRestoreService
42 void TabRestoreServiceDestroyed(TabRestoreService* service) override;
45 // Construct and initialize tab_restore_service_ if it's NULL.
46 // tab_restore_service_ may still be NULL, however, in incognito mode.
47 void EnsureTabRestoreService();
49 // TabRestoreService that we are observing.
50 TabRestoreService* tab_restore_service_;
52 DISALLOW_COPY_AND_ASSIGN(RecentlyClosedTabsHandler);
55 #endif // CHROME_BROWSER_UI_WEBUI_NTP_RECENTLY_CLOSED_TABS_HANDLER_H_