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// Copyright (c) 2011 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_GTK_GLOBAL_HISTORY_MENU_H_
#define CHROME_BROWSER_UI_GTK_GLOBAL_HISTORY_MENU_H_
#include <map>
#include "base/compiler_specific.h"
#include "chrome/browser/cancelable_request.h"
#include "chrome/browser/history/history_types.h"
#include "chrome/browser/sessions/tab_restore_service.h"
#include "chrome/browser/sessions/tab_restore_service_observer.h"
#include "chrome/browser/ui/gtk/global_menu_owner.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "ui/base/gtk/gtk_signal.h"
#include "ui/base/gtk/owned_widget_gtk.h"
class Browser;
namespace history {
class TopSites;
}
typedef struct _GdkPixbuf GdkPixbuf;
// Controls the History menu.
class GlobalHistoryMenu : public GlobalMenuOwner,
public content::NotificationObserver,
public TabRestoreServiceObserver {
public:
explicit GlobalHistoryMenu(Browser* browser);
virtual ~GlobalHistoryMenu();
// Takes the history menu we need to modify based on the tab restore/most
// visited state.
virtual void Init(GtkWidget* history_menu,
GtkWidget* history_menu_item) OVERRIDE;
private:
class HistoryItem;
struct ClearMenuClosure;
struct GetIndexClosure;
typedef std::map<GtkWidget*, HistoryItem*> MenuItemToHistoryMap;
// Sends a message off to History for data.
void GetTopSitesData();
// Callback to receive data requested from GetTopSitesData().
void OnTopSitesReceived(const history::MostVisitedURLList& visited_list);
// Returns the currently existing HistoryItem associated with
// |menu_item|. Can return NULL.
HistoryItem* HistoryItemForMenuItem(GtkWidget* menu_item);
// Returns whether there's a valid HistoryItem representation of |entry|.
bool HasValidHistoryItemForTab(const TabRestoreService::Tab& entry);
// Creates a HistoryItem from the data in |entry|.
HistoryItem* HistoryItemForTab(const TabRestoreService::Tab& entry);
// Creates a menu item form |item| and inserts it in |menu| at |index|.
GtkWidget* AddHistoryItemToMenu(HistoryItem* item,
GtkWidget* menu,
int tag,
int index);
// Find the first index of the item in |menu| with the tag |tag_id|.
int GetIndexOfMenuItemWithTag(GtkWidget* menu, int tag_id);
// This will remove all menu items in |menu| with |tag| as their tag. This
// clears state about HistoryItems* that we keep to prevent that data from
// going stale. That's why this method recurses into its child menus.
void ClearMenuSection(GtkWidget* menu, int tag);
// Implementation detail of GetIndexOfMenuItemWithTag.
static void GetIndexCallback(GtkWidget* widget, GetIndexClosure* closure);
// Implementation detail of ClearMenuSection.
static void ClearMenuCallback(GtkWidget* widget, ClearMenuClosure* closure);
// content::NotificationObserver:
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// For TabRestoreServiceObserver
virtual void TabRestoreServiceChanged(TabRestoreService* service) OVERRIDE;
virtual void TabRestoreServiceDestroyed(TabRestoreService* service) OVERRIDE;
CHROMEGTK_CALLBACK_0(GlobalHistoryMenu, void, OnRecentlyClosedItemActivated);
// Listen for the first menu show command so we can then connect to the
// TabRestoreService. With how the global menus work, I'd prefer to register
// with the TabRestoreService as soon as we're constructed, but this breaks
// unit tests which test the service (because they force different
// construction ordering while us connecting to the TabRestoreService loads
// data now!)
CHROMEGTK_CALLBACK_0(GlobalHistoryMenu, void, OnMenuActivate);
Browser* browser_;
Profile* profile_;
// The history menu. We keep this since we need to rewrite parts of it
// periodically.
ui::OwnedWidgetGtk history_menu_;
history::TopSites* top_sites_;
CancelableRequestConsumer top_sites_consumer_;
TabRestoreService* tab_restore_service_; // weak
// A mapping from GtkMenuItems to HistoryItems that maintain data.
MenuItemToHistoryMap menu_item_history_map_;
content::NotificationRegistrar registrar_;
};
#endif // CHROME_BROWSER_UI_GTK_GLOBAL_HISTORY_MENU_H_
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