OLD | NEW |
1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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 CHROME_BROWSER_DOM_UI_SHOWN_SECTIONS_HANDLER_H_ | 5 #ifndef CHROME_BROWSER_DOM_UI_SHOWN_SECTIONS_HANDLER_H_ |
6 #define CHROME_BROWSER_DOM_UI_SHOWN_SECTIONS_HANDLER_H_ | 6 #define CHROME_BROWSER_DOM_UI_SHOWN_SECTIONS_HANDLER_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include "chrome/browser/dom_ui/dom_ui.h" | 9 #include "chrome/browser/dom_ui/dom_ui.h" |
10 #include "chrome/common/notification_observer.h" | 10 #include "chrome/common/notification_observer.h" |
11 #include "chrome/browser/prefs/pref_change_registrar.h" | 11 #include "chrome/browser/prefs/pref_change_registrar.h" |
12 | 12 |
13 class DOMUI; | 13 class DOMUI; |
14 class Extension; | 14 class Extension; |
15 class Value; | 15 class Value; |
16 class PrefService; | 16 class PrefService; |
17 | 17 |
18 // Use for the shown sections bitmask. | 18 // Use for the shown sections bitmask. |
19 // Currently, only the THUMB and APPS sections can be toggled by the user. Other | 19 // Currently, only the THUMB and APPS sections can be toggled by the user. Other |
20 // sections are shown automatically if they have data, and hidden otherwise. | 20 // sections are shown automatically if they have data, and hidden otherwise. |
21 enum Section { | 21 enum Section { |
22 // If one of these is set, the corresponding section shows large thumbnails, | 22 // If one of these is set, the corresponding section shows large thumbnails, |
23 // else it shows only a small overview list. | 23 // else it shows only a small overview list. |
24 THUMB = 1 << 0, | 24 THUMB = 1 << 0, |
25 APPS = 1 << 6, | 25 APPS = 1 << 6, |
26 | 26 |
27 // We use the low 16 bits for sections, the high 16 bits for minimized state. | 27 // We use the low 16 bits for sections, the high 16 bits for menu mode. |
28 ALL_SECTIONS_MASK = 0x0000FFFF, | 28 ALL_SECTIONS_MASK = 0x0000FFFF, |
29 | 29 |
30 // If one of these is set, then the corresponding section is shown minimized | 30 // If one of these is set, then the corresponding section is shown in a menu |
31 // at the bottom of the NTP and no data is directly visible on the NTP. | 31 // at the bottom of the NTP and no data is directly visible on the NTP. |
32 MINIMIZED_THUMB = 1 << (0 + 16), | 32 MENU_THUMB = 1 << (0 + 16), |
33 MINIMIZED_RECENT = 1 << (2 + 16), | 33 MENU_RECENT = 1 << (2 + 16), |
34 MINIMIZED_APPS = 1 << (6 + 16), | 34 MENU_APPS = 1 << (6 + 16), |
35 }; | 35 }; |
36 | 36 |
37 class ShownSectionsHandler : public DOMMessageHandler, | 37 class ShownSectionsHandler : public DOMMessageHandler, |
38 public NotificationObserver { | 38 public NotificationObserver { |
39 public: | 39 public: |
40 explicit ShownSectionsHandler(PrefService* pref_service); | 40 explicit ShownSectionsHandler(PrefService* pref_service); |
41 virtual ~ShownSectionsHandler() {} | 41 virtual ~ShownSectionsHandler() {} |
42 | 42 |
43 // Helper to get the current shown sections. | 43 // Helper to get the current shown sections. |
44 static int GetShownSections(PrefService* pref_service); | 44 static int GetShownSections(PrefService* pref_service); |
(...skipping 26 matching lines...) Expand all Loading... |
71 const Extension* extension); | 71 const Extension* extension); |
72 | 72 |
73 private: | 73 private: |
74 PrefService* pref_service_; | 74 PrefService* pref_service_; |
75 PrefChangeRegistrar pref_registrar_; | 75 PrefChangeRegistrar pref_registrar_; |
76 | 76 |
77 DISALLOW_COPY_AND_ASSIGN(ShownSectionsHandler); | 77 DISALLOW_COPY_AND_ASSIGN(ShownSectionsHandler); |
78 }; | 78 }; |
79 | 79 |
80 #endif // CHROME_BROWSER_DOM_UI_SHOWN_SECTIONS_HANDLER_H_ | 80 #endif // CHROME_BROWSER_DOM_UI_SHOWN_SECTIONS_HANDLER_H_ |
OLD | NEW |