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// Copyright (c) 2014 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 UI_BASE_X_X11_MENU_LIST_H_
#define UI_BASE_X_X11_MENU_LIST_H_
#include <vector>
#include "base/basictypes.h"
#include "ui/base/ui_base_export.h"
#include "ui/gfx/x/x11_types.h"
// A process wide singleton cache for X menus.
template <typename T> struct DefaultSingletonTraits;
namespace ui {
// Keeps track of created and destroyed top level menu windows.
class UI_BASE_EXPORT XMenuList {
public:
static XMenuList* GetInstance();
// Checks if |menu| has _NET_WM_WINDOW_TYPE property set to
// "_NET_WM_WINDOW_TYPE_MENU" atom and if so caches it.
void MaybeRegisterMenu(XID menu);
// Finds |menu| in cache and if found removes it.
void MaybeUnregisterMenu(XID menu);
// Inserts cached menu XIDs at the beginning of |stack|.
void InsertMenuWindowXIDs(std::vector<XID>* stack);
private:
friend struct DefaultSingletonTraits<XMenuList>;
XMenuList();
~XMenuList();
std::vector<XID> menus_;
XAtom menu_type_atom_;
DISALLOW_COPY_AND_ASSIGN(XMenuList);
};
} // namespace ui
#endif // UI_BASE_X_X11_MENU_LIST_H_
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