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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 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 | 4 |
5 #ifndef UI_BASE_GTK_G_OBJECT_DESTRUCTOR_FILO_H_ | 5 #ifndef UI_BASE_GTK_G_OBJECT_DESTRUCTOR_FILO_H_ |
6 #define UI_BASE_GTK_G_OBJECT_DESTRUCTOR_FILO_H_ | 6 #define UI_BASE_GTK_G_OBJECT_DESTRUCTOR_FILO_H_ |
7 | 7 |
8 #include <glib.h> | 8 #include <glib.h> |
9 #include <list> | 9 #include <list> |
10 #include <map> | 10 #include <map> |
11 | 11 |
12 #include "base/basictypes.h" | 12 #include "base/basictypes.h" |
13 #include "ui/base/ui_export.h" | 13 #include "ui/base/ui_base_export.h" |
14 | 14 |
15 template <typename T> struct DefaultSingletonTraits; | 15 template <typename T> struct DefaultSingletonTraits; |
16 | 16 |
17 typedef struct _GObject GObject; | 17 typedef struct _GObject GObject; |
18 | 18 |
19 namespace ui { | 19 namespace ui { |
20 | 20 |
21 // This class hooks calls to g_object_weak_ref()/unref() and executes them in | 21 // This class hooks calls to g_object_weak_ref()/unref() and executes them in |
22 // FILO order. This is important if there are several hooks to the single object | 22 // FILO order. This is important if there are several hooks to the single object |
23 // (set up at different levels of class hierarchy) and the lowest hook (set up | 23 // (set up at different levels of class hierarchy) and the lowest hook (set up |
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41 // MyClass::~MyClass() { | 41 // MyClass::~MyClass() { |
42 // if (!destroyed_) { | 42 // if (!destroyed_) { |
43 // ui::GObjectDestructorFILO::GetInstance()->Disconnect( | 43 // ui::GObjectDestructorFILO::GetInstance()->Disconnect( |
44 // G_OBJECT(my_widget), &OnDestroyedThunk, this); | 44 // G_OBJECT(my_widget), &OnDestroyedThunk, this); |
45 // } | 45 // } |
46 // } | 46 // } |
47 // | 47 // |
48 // TODO(glotov): Probably worth adding ScopedGObjectDtor<T>. | 48 // TODO(glotov): Probably worth adding ScopedGObjectDtor<T>. |
49 // | 49 // |
50 // This class is a singleton. Not thread safe. Must be called within UI thread. | 50 // This class is a singleton. Not thread safe. Must be called within UI thread. |
51 class UI_EXPORT GObjectDestructorFILO { | 51 class UI_BASE_EXPORT GObjectDestructorFILO { |
52 public: | 52 public: |
53 typedef void (*DestructorHook)(void* context, GObject* where_the_object_was); | 53 typedef void (*DestructorHook)(void* context, GObject* where_the_object_was); |
54 | 54 |
55 static GObjectDestructorFILO* GetInstance(); | 55 static GObjectDestructorFILO* GetInstance(); |
56 void Connect(GObject* object, DestructorHook callback, void* context); | 56 void Connect(GObject* object, DestructorHook callback, void* context); |
57 void Disconnect(GObject* object, DestructorHook callback, void* context); | 57 void Disconnect(GObject* object, DestructorHook callback, void* context); |
58 | 58 |
59 private: | 59 private: |
60 struct Hook { | 60 struct Hook { |
61 Hook(GObject* o, DestructorHook cb, void* ctx) | 61 Hook(GObject* o, DestructorHook cb, void* ctx) |
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82 } | 82 } |
83 | 83 |
84 HandlerMap handler_map_; | 84 HandlerMap handler_map_; |
85 | 85 |
86 DISALLOW_COPY_AND_ASSIGN(GObjectDestructorFILO); | 86 DISALLOW_COPY_AND_ASSIGN(GObjectDestructorFILO); |
87 }; | 87 }; |
88 | 88 |
89 } // namespace ui | 89 } // namespace ui |
90 | 90 |
91 #endif // UI_BASE_GTK_G_OBJECT_DESTRUCTOR_FILO_H_ | 91 #endif // UI_BASE_GTK_G_OBJECT_DESTRUCTOR_FILO_H_ |
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