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| 1 // Copyright (c) 2012 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. | |
| 4 | |
| 5 #ifndef CHROME_BROWSER_UI_GTK_GLOBAL_MENU_BAR_H_ | |
| 6 #define CHROME_BROWSER_UI_GTK_GLOBAL_MENU_BAR_H_ | |
| 7 | |
| 8 #include <map> | |
| 9 | |
| 10 #include "base/compiler_specific.h" | |
| 11 #include "base/prefs/pref_change_registrar.h" | |
| 12 #include "chrome/browser/command_observer.h" | |
| 13 #include "chrome/browser/ui/gtk/global_history_menu.h" | |
| 14 #include "ui/base/gtk/gtk_signal.h" | |
| 15 | |
| 16 class Browser; | |
| 17 struct GlobalMenuBarCommand; | |
| 18 class GlobalMenuOwner; | |
| 19 | |
| 20 typedef struct _GtkAccelGroup GtkAccelGroup; | |
| 21 typedef struct _GtkWidget GtkWidget; | |
| 22 | |
| 23 // Controls the Mac style menu bar on Linux. | |
| 24 // | |
| 25 // Unity and some configurations of GNOME have a Apple-like menu bar at the top | |
| 26 // of the screen that changes depending on the active window. These mainly work | |
| 27 // by inspecting the application's widget hierarchy, and intercepting any | |
| 28 // GtkMenuBar found. Thankfully, these systems don't check to see if the menu | |
| 29 // bar itself is visible, so we insert a GtkMenuBar into the window hierarchy | |
| 30 // and set it to be invisible. | |
| 31 class GlobalMenuBar : public CommandObserver { | |
| 32 public: | |
| 33 static const int TAG_NORMAL = 0; | |
| 34 static const int TAG_MOST_VISITED = 1; | |
| 35 static const int TAG_RECENTLY_CLOSED = 2; | |
| 36 static const int TAG_MOST_VISITED_HEADER = 3; | |
| 37 static const int TAG_RECENTLY_CLOSED_HEADER = 4; | |
| 38 static const int TAG_BOOKMARK_CLEARABLE = 5; | |
| 39 | |
| 40 explicit GlobalMenuBar(Browser* browser); | |
| 41 virtual ~GlobalMenuBar(); | |
| 42 | |
| 43 // Use this method to remove the GlobalMenuBar from any further notifications | |
| 44 // and command updates but not destroy the widgets. | |
| 45 virtual void Disable(); | |
| 46 | |
| 47 GtkWidget* widget() { return menu_bar_; } | |
| 48 | |
| 49 private: | |
| 50 typedef std::map<int, GtkWidget*> CommandIDMenuItemMap; | |
| 51 | |
| 52 // Helper function that builds the data. | |
| 53 void BuildGtkMenuFrom(int menu_str_id, | |
| 54 std::map<int, GtkWidget*>* id_to_menu_item, | |
| 55 GlobalMenuBarCommand* commands, | |
| 56 GlobalMenuOwner* owner); | |
| 57 | |
| 58 // Builds an individual menu item. | |
| 59 GtkWidget* BuildMenuItem(int string_id, | |
| 60 int command_id, | |
| 61 int tag_id, | |
| 62 std::map<int, GtkWidget*>* id_to_menu_item, | |
| 63 GtkWidget* menu_to_add_to); | |
| 64 | |
| 65 // CommandObserver: | |
| 66 virtual void EnabledStateChangedForCommand(int id, bool enabled) OVERRIDE; | |
| 67 | |
| 68 // Updates the visibility of the bookmark bar on pref changes. | |
| 69 void OnBookmarkBarVisibilityChanged(); | |
| 70 | |
| 71 CHROMEGTK_CALLBACK_0(GlobalMenuBar, void, OnItemActivated); | |
| 72 | |
| 73 Browser* browser_; | |
| 74 | |
| 75 // Tracks value of the kShowBookmarkBar preference. | |
| 76 PrefChangeRegistrar pref_change_registrar_; | |
| 77 | |
| 78 // Our menu bar widget. | |
| 79 GtkWidget* menu_bar_; | |
| 80 | |
| 81 // Listens to the TabRestoreService and the HistoryService and keeps the | |
| 82 // history menu fresh. | |
| 83 GlobalHistoryMenu history_menu_; | |
| 84 | |
| 85 // For some menu items, we want to show the accelerator, but not actually | |
| 86 // explicitly handle it. To this end we connect those menu items' accelerators | |
| 87 // to this group, but don't attach this group to any top level window. | |
| 88 GtkAccelGroup* dummy_accel_group_; | |
| 89 | |
| 90 // A mapping from command ids to GtkMenuItem objects. We use this to update | |
| 91 // the command enable state. | |
| 92 CommandIDMenuItemMap id_to_menu_item_; | |
| 93 | |
| 94 // gtk_check_menu_item_set_active() will call the "activate" signal. We need | |
| 95 // to block this activation while we change the checked state. | |
| 96 bool block_activation_; | |
| 97 }; | |
| 98 | |
| 99 #endif // CHROME_BROWSER_UI_GTK_GLOBAL_MENU_BAR_H_ | |
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