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
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
// Copyright 2014 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_EXTENSIONS_EXTENSION_STORAGE_MONITOR_H_
#define CHROME_BROWSER_EXTENSIONS_EXTENSION_STORAGE_MONITOR_H_
#include <set>
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/scoped_observer.h"
#include "chrome/browser/extensions/extension_uninstall_dialog.h"
#include "components/keyed_service/core/keyed_service.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "extensions/browser/extension_registry_observer.h"
namespace content {
class BrowserContext;
}
namespace gfx {
class Image;
}
namespace extensions {
class Extension;
class ExtensionPrefs;
class ExtensionRegistry;
class StorageEventObserver;
// ExtensionStorageMonitor monitors the storage usage of extensions and apps
// that are granted unlimited storage and displays notifications when high
// usage is detected.
class ExtensionStorageMonitor : public KeyedService,
public content::NotificationObserver,
public ExtensionRegistryObserver,
public ExtensionUninstallDialog::Delegate {
public:
static ExtensionStorageMonitor* Get(content::BrowserContext* context);
// Indices of buttons in the notification. Exposed for testing.
enum ButtonIndex {
BUTTON_DISABLE_NOTIFICATION = 0,
BUTTON_UNINSTALL
};
explicit ExtensionStorageMonitor(content::BrowserContext* context);
virtual ~ExtensionStorageMonitor();
private:
// content::NotificationObserver overrides:
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// ExtensionRegistryObserver overrides:
virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
const Extension* extension) OVERRIDE;
virtual void OnExtensionUnloaded(
content::BrowserContext* browser_context,
const Extension* extension,
UnloadedExtensionInfo::Reason reason) OVERRIDE;
virtual void OnExtensionWillBeInstalled(
content::BrowserContext* browser_context,
const Extension* extension,
bool is_update,
bool from_ephemeral,
const std::string& old_name) OVERRIDE;
virtual void OnExtensionUninstalled(
content::BrowserContext* browser_context,
const Extension* extension,
extensions::UninstallReason reason) OVERRIDE;
// Overridden from ExtensionUninstallDialog::Delegate:
virtual void ExtensionUninstallAccepted() OVERRIDE;
virtual void ExtensionUninstallCanceled() OVERRIDE;
std::string GetNotificationId(const std::string& extension_id);
void OnStorageThresholdExceeded(const std::string& extension_id,
int64 next_threshold,
int64 current_usage);
void OnImageLoaded(const std::string& extension_id,
int64 current_usage,
const gfx::Image& image);
void OnNotificationButtonClick(const std::string& extension_id,
int button_index);
void DisableStorageMonitoring(const std::string& extension_id);
void StartMonitoringStorage(const Extension* extension);
void StopMonitoringStorage(const std::string& extension_id);
void StopMonitoringAll();
void RemoveNotificationForExtension(const std::string& extension_id);
void RemoveAllNotifications();
// Displays the prompt for uninstalling the extension.
void ShowUninstallPrompt(const std::string& extension_id);
// Returns/sets the next threshold for displaying a notification if an
// extension or app consumes excessive disk space.
int64 GetNextStorageThreshold(const std::string& extension_id) const;
void SetNextStorageThreshold(const std::string& extension_id,
int64 next_threshold);
// Returns the raw next storage threshold value stored in prefs. Returns 0 if
// the initial threshold has not yet been reached.
int64 GetNextStorageThresholdFromPrefs(const std::string& extension_id) const;
// Returns/sets whether notifications should be shown if an extension or app
// consumes too much disk space.
bool IsStorageNotificationEnabled(const std::string& extension_id) const;
void SetStorageNotificationEnabled(const std::string& extension_id,
bool enable_notifications);
// Initially, monitoring will only be applied to ephemeral apps. This flag
// is set by tests to enable for all extensions and apps.
bool enable_for_all_extensions_;
// The first notification is shown after the initial threshold is exceeded.
// Ephemeral apps have a lower threshold than fully installed extensions.
// A lower threshold is set by tests.
int64 initial_extension_threshold_;
int64 initial_ephemeral_threshold_;
// The rate (in seconds) at which we would like to receive storage updates
// from QuotaManager. Overridden in tests.
int observer_rate_;
// IDs of extensions that notifications were shown for.
std::set<std::string> notified_extension_ids_;
content::BrowserContext* context_;
extensions::ExtensionPrefs* extension_prefs_;
content::NotificationRegistrar registrar_;
ScopedObserver<extensions::ExtensionRegistry,
extensions::ExtensionRegistryObserver>
extension_registry_observer_;
// StorageEventObserver monitors storage for extensions on the IO thread.
scoped_refptr<StorageEventObserver> storage_observer_;
// Modal dialog used to confirm removal of an extension.
scoped_ptr<ExtensionUninstallDialog> uninstall_dialog_;
// The ID of the extension that is the subject of the uninstall confirmation
// dialog.
std::string uninstall_extension_id_;
base::WeakPtrFactory<ExtensionStorageMonitor> weak_ptr_factory_;
friend class StorageEventObserver;
friend class ExtensionStorageMonitorTest;
DISALLOW_COPY_AND_ASSIGN(ExtensionStorageMonitor);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_STORAGE_MONITOR_H_
|
