chrome/browser/download/hyperbolic_download_item_notifier.h - Issue 10974009: Rename HyperbolicDownloadItemNotifer -> AllDownloadItemNotifier

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Issue 10974009: Rename HyperbolicDownloadItemNotifer -> AllDownloadItemNotifier (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src

Patch Set: . Created 8 years, 3 months ago

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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_DOWNLOAD_HYPERBOLIC_DOWNLOAD_ITEM_NOTIFIER_H_

6 #define CHROME_BROWSER_DOWNLOAD_HYPERBOLIC_DOWNLOAD_ITEM_NOTIFIER_H_

7

8 #include <set>

9

10 #include "content/public/browser/download_manager.h"

11 #include "content/public/browser/download_item.h"

12

13 // HyperbolicDownloadItemNotifier observes ALL the DownloadItems on a given

14 // DownloadManager.

15 // Clients should use GetManager() instead of storing their own pointer to the

16 // manager so that they can be sensitive to managers that have gone down.

17

18 // Example Usage:

19 // class AndAHalf : public HyperbolicDownloadItemNotifier::Observer {

20 // public:

21 // AndAHalf(content::DownloadManager* original_manager,

22 // content::DownloadManager* incognito_manager)

23 // : ALLOW_THIS_IN_INITIALIZATION_LIST(original_hyperbole_(

24 // original_manager, this)),

25 // ALLOW_THIS_IN_INITIALIZATION_LIST(incognito_hyperbole_(

26 // incognito_manager, this)) {

27 // }

28 //

29 // virtual void OnDownloadUpdated(

30 // content::DownloadManager* manager, content::DownloadItem* item) { ... }

31 //

32 // private:

33 // HyperbolicDownloadItemNotifier original_hyperbole_;

34 // HyperbolicDownloadItemNotifier incognito_hyperbole_;

35 // };

36

37 class HyperbolicDownloadItemNotifier

38 : public content::DownloadManager::Observer,

39 public content::DownloadItem::Observer {

40 public:

41 // All of the methods take the DownloadManager so that subclasses can observe

42 // multiple managers at once and easily distinguish which manager a given item

43 // belongs to.

44 class Observer {

45 public:

46 Observer() {}

47 virtual ~Observer() {}

48

49 virtual void OnDownloadCreated(

50 content::DownloadManager* manager, content::DownloadItem* item) {}

51 virtual void OnDownloadUpdated(

52 content::DownloadManager* manager, content::DownloadItem* item) {}

53 virtual void OnDownloadOpened(

54 content::DownloadManager* manager, content::DownloadItem* item) {}

55 virtual void OnDownloadRemoved(

56 content::DownloadManager* manager, content::DownloadItem* item) {}

57

58 private:

59 DISALLOW_COPY_AND_ASSIGN(Observer);

60 };

61

62 HyperbolicDownloadItemNotifier(content::DownloadManager* manager,

63 Observer* observer);

64

65 virtual ~HyperbolicDownloadItemNotifier();

66

67 // Returns NULL if the manager has gone down.

68 content::DownloadManager* GetManager() const { return manager_; }

69

70 private:

71 // content::DownloadManager::Observer

72 virtual void ManagerGoingDown(content::DownloadManager* manager) OVERRIDE;

73 virtual void OnDownloadCreated(content::DownloadManager* manager,

74 content::DownloadItem* item) OVERRIDE;

75

76 // content::DownloadItem::Observer

77 virtual void OnDownloadUpdated(content::DownloadItem* item) OVERRIDE;

78 virtual void OnDownloadOpened(content::DownloadItem* item) OVERRIDE;

79 virtual void OnDownloadRemoved(content::DownloadItem* item) OVERRIDE;

80 virtual void OnDownloadDestroyed(content::DownloadItem* item) OVERRIDE;

81

82 content::DownloadManager* manager_;

83 HyperbolicDownloadItemNotifier::Observer* observer_;

84 std::set<content::DownloadItem*> observing_;

85

86 DISALLOW_COPY_AND_ASSIGN(HyperbolicDownloadItemNotifier);

87 };

88

89 #endif // CHROME_BROWSER_DOWNLOAD_HYPERBOLIC_DOWNLOAD_ITEM_NOTIFIER_H_

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