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Side by Side Diff: webkit/browser/appcache/appcache_group.h

Issue 344493002: Move all remaining appcache-related code to content namespace (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: rebase Created 6 years, 5 months ago
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1 // Copyright (c) 2011 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 WEBKIT_BROWSER_APPCACHE_APPCACHE_GROUP_H_
6 #define WEBKIT_BROWSER_APPCACHE_APPCACHE_GROUP_H_
7
8 #include <map>
9 #include <vector>
10
11 #include "base/cancelable_callback.h"
12 #include "base/gtest_prod_util.h"
13 #include "base/memory/ref_counted.h"
14 #include "base/memory/scoped_ptr.h"
15 #include "base/observer_list.h"
16 #include "base/time/time.h"
17 #include "url/gurl.h"
18 #include "webkit/browser/webkit_storage_browser_export.h"
19
20 namespace content {
21 FORWARD_DECLARE_TEST(AppCacheGroupTest, StartUpdate);
22 FORWARD_DECLARE_TEST(AppCacheGroupTest, CancelUpdate);
23 FORWARD_DECLARE_TEST(AppCacheGroupTest, QueueUpdate);
24 FORWARD_DECLARE_TEST(AppCacheUpdateJobTest, AlreadyChecking);
25 FORWARD_DECLARE_TEST(AppCacheUpdateJobTest, AlreadyDownloading);
26 class AppCacheUpdateJobTest;
27 class MockAppCacheStorage;
28 }
29
30 namespace appcache {
31
32 class AppCache;
33 class AppCacheHost;
34 class AppCacheStorage;
35 class AppCacheUpdateJob;
36 class HostObserver;
37
38 // Collection of application caches identified by the same manifest URL.
39 // A group exists as long as it is in use by a host or is being updated.
40 class WEBKIT_STORAGE_BROWSER_EXPORT AppCacheGroup
41 : public base::RefCounted<AppCacheGroup> {
42 public:
43
44 class WEBKIT_STORAGE_BROWSER_EXPORT UpdateObserver {
45 public:
46 // Called just after an appcache update has completed.
47 virtual void OnUpdateComplete(AppCacheGroup* group) = 0;
48 virtual ~UpdateObserver() {}
49 };
50
51 enum UpdateAppCacheStatus {
52 IDLE,
53 CHECKING,
54 DOWNLOADING,
55 };
56
57 AppCacheGroup(AppCacheStorage* storage, const GURL& manifest_url,
58 int64 group_id);
59
60 // Adds/removes an update observer, the AppCacheGroup does not take
61 // ownership of the observer.
62 void AddUpdateObserver(UpdateObserver* observer);
63 void RemoveUpdateObserver(UpdateObserver* observer);
64
65 int64 group_id() const { return group_id_; }
66 const GURL& manifest_url() const { return manifest_url_; }
67 const base::Time& creation_time() const { return creation_time_; }
68 void set_creation_time(const base::Time& time) { creation_time_ = time; }
69 bool is_obsolete() const { return is_obsolete_; }
70 void set_obsolete(bool value) { is_obsolete_ = value; }
71
72 bool is_being_deleted() const { return is_being_deleted_; }
73 void set_being_deleted(bool value) { is_being_deleted_ = value; }
74
75 AppCache* newest_complete_cache() const { return newest_complete_cache_; }
76
77 void AddCache(AppCache* complete_cache);
78 void RemoveCache(AppCache* cache);
79 bool HasCache() const { return newest_complete_cache_ != NULL; }
80
81 void AddNewlyDeletableResponseIds(std::vector<int64>* response_ids);
82
83 UpdateAppCacheStatus update_status() const { return update_status_; }
84
85 // Starts an update via update() javascript API.
86 void StartUpdate() {
87 StartUpdateWithHost(NULL);
88 }
89
90 // Starts an update for a doc loaded from an application cache.
91 void StartUpdateWithHost(AppCacheHost* host) {
92 StartUpdateWithNewMasterEntry(host, GURL());
93 }
94
95 // Starts an update for a doc loaded using HTTP GET or equivalent with
96 // an <html> tag manifest attribute value that matches this group's
97 // manifest url.
98 void StartUpdateWithNewMasterEntry(AppCacheHost* host,
99 const GURL& new_master_resource);
100
101 // Cancels an update if one is running.
102 void CancelUpdate();
103
104 private:
105 class HostObserver;
106
107 friend class base::RefCounted<AppCacheGroup>;
108 friend class content::AppCacheUpdateJobTest;
109 friend class content::MockAppCacheStorage; // for old_caches()
110 friend class AppCacheUpdateJob;
111
112 ~AppCacheGroup();
113
114 typedef std::vector<AppCache*> Caches;
115 typedef std::map<AppCacheHost*, GURL> QueuedUpdates;
116
117 static const int kUpdateRestartDelayMs = 1000;
118
119 AppCacheUpdateJob* update_job() { return update_job_; }
120 void SetUpdateAppCacheStatus(UpdateAppCacheStatus status);
121
122 void NotifyContentBlocked();
123
124 const Caches& old_caches() const { return old_caches_; }
125
126 // Update cannot be processed at this time. Queue it for a later run.
127 void QueueUpdate(AppCacheHost* host, const GURL& new_master_resource);
128 void RunQueuedUpdates();
129 bool FindObserver(UpdateObserver* find_me,
130 const ObserverList<UpdateObserver>& observer_list);
131 void ScheduleUpdateRestart(int delay_ms);
132 void HostDestructionImminent(AppCacheHost* host);
133
134 const int64 group_id_;
135 const GURL manifest_url_;
136 base::Time creation_time_;
137 UpdateAppCacheStatus update_status_;
138 bool is_obsolete_;
139 bool is_being_deleted_;
140 std::vector<int64> newly_deletable_response_ids_;
141
142 // Old complete app caches.
143 Caches old_caches_;
144
145 // Newest cache in this group to be complete, aka relevant cache.
146 AppCache* newest_complete_cache_;
147
148 // Current update job for this group, if any.
149 AppCacheUpdateJob* update_job_;
150
151 // Central storage object.
152 AppCacheStorage* storage_;
153
154 // List of objects observing this group.
155 ObserverList<UpdateObserver> observers_;
156
157 // Updates that have been queued for the next run.
158 QueuedUpdates queued_updates_;
159 ObserverList<UpdateObserver> queued_observers_;
160 base::CancelableClosure restart_update_task_;
161 scoped_ptr<HostObserver> host_observer_;
162
163 // True if we're in our destructor.
164 bool is_in_dtor_;
165
166 FRIEND_TEST_ALL_PREFIXES(content::AppCacheGroupTest, StartUpdate);
167 FRIEND_TEST_ALL_PREFIXES(content::AppCacheGroupTest, CancelUpdate);
168 FRIEND_TEST_ALL_PREFIXES(content::AppCacheGroupTest, QueueUpdate);
169 FRIEND_TEST_ALL_PREFIXES(content::AppCacheUpdateJobTest, AlreadyChecking);
170 FRIEND_TEST_ALL_PREFIXES(content::AppCacheUpdateJobTest, AlreadyDownloading);
171
172 DISALLOW_COPY_AND_ASSIGN(AppCacheGroup);
173 };
174
175 } // namespace appcache
176
177 #endif // WEBKIT_BROWSER_APPCACHE_APPCACHE_GROUP_H_
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