blob: fa4c4be360c8d5dc0a5834979e40db0216f3c519 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_DOWNLOAD_ALL_DOWNLOAD_ITEM_NOTIFIER_H_
#define CHROME_BROWSER_DOWNLOAD_ALL_DOWNLOAD_ITEM_NOTIFIER_H_
#include <set>
#include "content/public/browser/download_manager.h"
#include "content/public/browser/download_item.h"
// AllDownloadItemNotifier observes ALL the DownloadItems on a given
// DownloadManager.
// Clients should use GetManager() instead of storing their own pointer to the
// manager so that they can be sensitive to managers that have gone down.
// Example Usage:
// class DownloadSystemConsumer : public AllDownloadItemNotifier::Observer {
// public:
// DownloadSystemConsumer(content::DownloadManager* original_manager,
// content::DownloadManager* incognito_manager)
// : original_notifier_(original_manager, this),
// incognito_notifier_(incognito_manager, this) {
// }
//
// virtual void OnDownloadUpdated(
// content::DownloadManager* manager, content::DownloadItem* item) { ... }
//
// private:
// AllDownloadItemNotifier original_notifier_;
// AllDownloadItemNotifier incognito_notifier_;
// };
class AllDownloadItemNotifier : public content::DownloadManager::Observer,
public content::DownloadItem::Observer {
public:
// All of the methods take the DownloadManager so that subclasses can observe
// multiple managers at once and easily distinguish which manager a given item
// belongs to.
class Observer {
public:
Observer() {}
virtual ~Observer() {}
virtual void OnDownloadCreated(
content::DownloadManager* manager, content::DownloadItem* item) {}
virtual void OnDownloadUpdated(
content::DownloadManager* manager, content::DownloadItem* item) {}
virtual void OnDownloadOpened(
content::DownloadManager* manager, content::DownloadItem* item) {}
virtual void OnDownloadRemoved(
content::DownloadManager* manager, content::DownloadItem* item) {}
private:
DISALLOW_COPY_AND_ASSIGN(Observer);
};
AllDownloadItemNotifier(content::DownloadManager* manager,
Observer* observer);
virtual ~AllDownloadItemNotifier();
// Returns NULL if the manager has gone down.
content::DownloadManager* GetManager() const { return manager_; }
private:
// content::DownloadManager::Observer
virtual void ManagerGoingDown(content::DownloadManager* manager) OVERRIDE;
virtual void OnDownloadCreated(content::DownloadManager* manager,
content::DownloadItem* item) OVERRIDE;
// content::DownloadItem::Observer
virtual void OnDownloadUpdated(content::DownloadItem* item) OVERRIDE;
virtual void OnDownloadOpened(content::DownloadItem* item) OVERRIDE;
virtual void OnDownloadRemoved(content::DownloadItem* item) OVERRIDE;
virtual void OnDownloadDestroyed(content::DownloadItem* item) OVERRIDE;
content::DownloadManager* manager_;
AllDownloadItemNotifier::Observer* observer_;
std::set<content::DownloadItem*> observing_;
DISALLOW_COPY_AND_ASSIGN(AllDownloadItemNotifier);
};
#endif // CHROME_BROWSER_DOWNLOAD_ALL_DOWNLOAD_ITEM_NOTIFIER_H_
|
