74 lines
2.2 KiB
C++
74 lines
2.2 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef CEF_LIBCEF_BROWSER_NATIVE_MENU_WRAPPER_H_
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#define CEF_LIBCEF_BROWSER_NATIVE_MENU_WRAPPER_H_
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#include "ui/gfx/native_widget_types.h"
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namespace gfx {
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class Point;
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}
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namespace ui {
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class MenuModel;
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}
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namespace views {
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class MenuInsertionDelegateWin;
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class MenuListener;
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// An interface that wraps an object that implements a menu.
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class MenuWrapper {
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public:
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// All of the possible actions that can result from RunMenuAt.
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enum MenuAction {
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MENU_ACTION_NONE, // Menu cancelled, or never opened.
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MENU_ACTION_SELECTED, // An item was selected.
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MENU_ACTION_PREVIOUS, // User wants to navigate to the previous menu.
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MENU_ACTION_NEXT, // User wants to navigate to the next menu.
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};
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virtual ~MenuWrapper() {}
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// Creates the appropriate instance of this wrapper for the current platform.
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static MenuWrapper* CreateWrapper(ui::MenuModel* model);
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// Runs the menu at the specified point. This blocks until done.
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virtual void RunMenuAt(const gfx::Point& point, int alignment) = 0;
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// Cancels the active menu.
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virtual void CancelMenu() = 0;
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// Called when the model supplying data to this menu has changed, and the menu
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// must be rebuilt.
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virtual void Rebuild(MenuInsertionDelegateWin* delegate) = 0;
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// Called when the states of the items in the menu must be updated from the
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// model.
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virtual void UpdateStates() = 0;
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// Retrieve a native menu handle.
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virtual HMENU GetNativeMenu() const = 0;
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// Get the result of the last call to RunMenuAt to determine whether an
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// item was selected, the user navigated to a next or previous menu, or
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// nothing.
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virtual MenuAction GetMenuAction() const = 0;
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// Add a listener to receive a callback when the menu opens.
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virtual void AddMenuListener(MenuListener* listener) = 0;
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// Remove a menu listener.
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virtual void RemoveMenuListener(MenuListener* listener) = 0;
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// Sets the minimum width of the menu.
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virtual void SetMinimumWidth(int width) = 0;
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};
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} // namespace views
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#endif // CEF_LIBCEF_BROWSER_NATIVE_MENU_WRAPPER_H_
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