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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 // | |
| 5 // This class replicates some menubar behaviors that are tricky to get right. | |
| 6 // It is used to create a more native feel for the bookmark bar. | |
| 7 | 4 |
| 8 #ifndef CHROME_BROWSER_GTK_MENU_BAR_HELPER_H_ | 5 #ifndef CHROME_BROWSER_GTK_MENU_BAR_HELPER_H_ |
| 9 #define CHROME_BROWSER_GTK_MENU_BAR_HELPER_H_ | 6 #define CHROME_BROWSER_GTK_MENU_BAR_HELPER_H_ |
| 10 #pragma once | 7 #pragma once |
| 11 | 8 |
| 12 #include <gtk/gtk.h> | 9 #include "chrome/browser/ui/gtk/menu_bar_helper.h" |
| 13 | 10 // TODO(msw): remove this file once all includes have been updated. |
| 14 #include <vector> | |
| 15 | |
| 16 #include "app/gtk_signal.h" | |
| 17 #include "base/scoped_ptr.h" | |
| 18 | |
| 19 class GtkSignalRegistrar; | |
| 20 | |
| 21 class MenuBarHelper { | |
| 22 public: | |
| 23 class Delegate { | |
| 24 public: | |
| 25 virtual ~Delegate() {} | |
| 26 | |
| 27 // Called when a the menu for a button ought to be triggered. | |
| 28 virtual void PopupForButton(GtkWidget* button) = 0; | |
| 29 virtual void PopupForButtonNextTo(GtkWidget* button, | |
| 30 GtkMenuDirectionType dir) = 0; | |
| 31 }; | |
| 32 | |
| 33 // |delegate| cannot be null. | |
| 34 explicit MenuBarHelper(Delegate* delegate); | |
| 35 virtual ~MenuBarHelper(); | |
| 36 | |
| 37 // Must be called whenever a button's menu starts showing. It triggers the | |
| 38 // MenuBarHelper to start listening for certain events. | |
| 39 void MenuStartedShowing(GtkWidget* button, GtkWidget* menu); | |
| 40 | |
| 41 // Add |button| to the set of buttons we care about. | |
| 42 void Add(GtkWidget* button); | |
| 43 | |
| 44 // Remove |button| from the set of buttons we care about. | |
| 45 void Remove(GtkWidget* button); | |
| 46 | |
| 47 // Clear all buttons from the set. | |
| 48 void Clear(); | |
| 49 | |
| 50 private: | |
| 51 CHROMEGTK_CALLBACK_0(MenuBarHelper, void, OnMenuHiddenOrDestroyed); | |
| 52 CHROMEGTK_CALLBACK_1(MenuBarHelper, gboolean, OnMenuMotionNotify, | |
| 53 GdkEventMotion*); | |
| 54 CHROMEGTK_CALLBACK_1(MenuBarHelper, void, OnMenuMoveCurrent, | |
| 55 GtkMenuDirectionType); | |
| 56 | |
| 57 // The buttons for which we pop up menus. We do not own these, or even add | |
| 58 // refs to them. | |
| 59 std::vector<GtkWidget*> buttons_; | |
| 60 | |
| 61 // The button that is currently showing a menu, or NULL. | |
| 62 GtkWidget* button_showing_menu_; | |
| 63 | |
| 64 // The highest level menu that is currently showing, or NULL. | |
| 65 GtkWidget* showing_menu_; | |
| 66 | |
| 67 // All the submenus of |showing_menu_|. We connect to motion events on all | |
| 68 // of them. | |
| 69 std::vector<GtkWidget*> submenus_; | |
| 70 | |
| 71 // Signal handlers that are attached only between the "show" and "hide" events | |
| 72 // for the menu. | |
| 73 scoped_ptr<GtkSignalRegistrar> signal_handlers_; | |
| 74 | |
| 75 Delegate* delegate_; | |
| 76 }; | |
| 77 | 11 |
| 78 #endif // CHROME_BROWSER_GTK_MENU_BAR_HELPER_H_ | 12 #endif // CHROME_BROWSER_GTK_MENU_BAR_HELPER_H_ |
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