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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 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_WEB_RESOURCE_WEB_RESOURCE_SERVICE_H_ | 5 #ifndef CHROME_BROWSER_WEB_RESOURCE_WEB_RESOURCE_SERVICE_H_ |
6 #define CHROME_BROWSER_WEB_RESOURCE_WEB_RESOURCE_SERVICE_H_ | 6 #define CHROME_BROWSER_WEB_RESOURCE_WEB_RESOURCE_SERVICE_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <string> | 9 #include <string> |
10 | 10 |
11 #include "base/memory/ref_counted.h" | 11 #include "base/memory/ref_counted.h" |
12 #include "base/memory/scoped_ptr.h" | 12 #include "base/memory/scoped_ptr.h" |
13 #include "base/memory/weak_ptr.h" | 13 #include "base/memory/weak_ptr.h" |
14 #include "content/public/common/url_fetcher_delegate.h" | |
15 #include "googleurl/src/gurl.h" | 14 #include "googleurl/src/gurl.h" |
| 15 #include "net/url_request/url_fetcher_delegate.h" |
16 | 16 |
17 class PrefService; | 17 class PrefService; |
18 class ResourceDispatcherHost; | 18 class ResourceDispatcherHost; |
19 | 19 |
20 namespace base { | 20 namespace base { |
21 class DictionaryValue; | 21 class DictionaryValue; |
22 } | 22 } |
23 | 23 |
| 24 namespace net { |
| 25 class URLFetcher; |
| 26 } |
| 27 |
24 // A WebResourceService fetches JSON data from a web server and periodically | 28 // A WebResourceService fetches JSON data from a web server and periodically |
25 // refreshes it. | 29 // refreshes it. |
26 class WebResourceService | 30 class WebResourceService |
27 : public base::RefCountedThreadSafe<WebResourceService>, | 31 : public base::RefCountedThreadSafe<WebResourceService>, |
28 public content::URLFetcherDelegate { | 32 public net::URLFetcherDelegate { |
29 public: | 33 public: |
30 WebResourceService(PrefService* prefs, | 34 WebResourceService(PrefService* prefs, |
31 const GURL& web_resource_server, | 35 const GURL& web_resource_server, |
32 bool apply_locale_to_url_, | 36 bool apply_locale_to_url_, |
33 const char* last_update_time_pref_name, | 37 const char* last_update_time_pref_name, |
34 int start_fetch_delay_ms, | 38 int start_fetch_delay_ms, |
35 int cache_update_delay_ms); | 39 int cache_update_delay_ms); |
36 | 40 |
37 // Sleep until cache needs to be updated, but always for at least | 41 // Sleep until cache needs to be updated, but always for at least |
38 // |start_fetch_delay_ms| so we don't interfere with startup. | 42 // |start_fetch_delay_ms| so we don't interfere with startup. |
39 // Then begin updating resources. | 43 // Then begin updating resources. |
40 void StartAfterDelay(); | 44 void StartAfterDelay(); |
41 | 45 |
42 protected: | 46 protected: |
43 virtual ~WebResourceService(); | 47 virtual ~WebResourceService(); |
44 | 48 |
45 virtual void Unpack(const base::DictionaryValue& parsed_json) = 0; | 49 virtual void Unpack(const base::DictionaryValue& parsed_json) = 0; |
46 | 50 |
47 PrefService* prefs_; | 51 PrefService* prefs_; |
48 | 52 |
49 private: | 53 private: |
50 class UnpackerClient; | 54 class UnpackerClient; |
51 friend class base::RefCountedThreadSafe<WebResourceService>; | 55 friend class base::RefCountedThreadSafe<WebResourceService>; |
52 | 56 |
53 // content::URLFetcherDelegate implementation: | 57 // net::URLFetcherDelegate implementation: |
54 virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE; | 58 virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE; |
55 | 59 |
56 // Schedules a fetch after |delay_ms| milliseconds. | 60 // Schedules a fetch after |delay_ms| milliseconds. |
57 void ScheduleFetch(int64 delay_ms); | 61 void ScheduleFetch(int64 delay_ms); |
58 | 62 |
59 // Starts fetching data from the server. | 63 // Starts fetching data from the server. |
60 void StartFetch(); | 64 void StartFetch(); |
61 | 65 |
62 // Set |in_fetch_| to false, clean up temp directories (in the future). | 66 // Set |in_fetch_| to false, clean up temp directories (in the future). |
63 void EndFetch(); | 67 void EndFetch(); |
64 | 68 |
65 // So that we can delay our start so as not to affect start-up time; also, | 69 // So that we can delay our start so as not to affect start-up time; also, |
66 // so that we can schedule future cache updates. | 70 // so that we can schedule future cache updates. |
67 base::WeakPtrFactory<WebResourceService> weak_ptr_factory_; | 71 base::WeakPtrFactory<WebResourceService> weak_ptr_factory_; |
68 | 72 |
69 // The tool that fetches the url data from the server. | 73 // The tool that fetches the url data from the server. |
70 scoped_ptr<content::URLFetcher> url_fetcher_; | 74 scoped_ptr<net::URLFetcher> url_fetcher_; |
71 | 75 |
72 // True if we are currently fetching or unpacking data. If we are asked to | 76 // True if we are currently fetching or unpacking data. If we are asked to |
73 // start a fetch when we are still fetching resource data, schedule another | 77 // start a fetch when we are still fetching resource data, schedule another |
74 // one in |cache_update_delay_ms_| time, and silently exit. | 78 // one in |cache_update_delay_ms_| time, and silently exit. |
75 bool in_fetch_; | 79 bool in_fetch_; |
76 | 80 |
77 // URL that hosts the web resource. | 81 // URL that hosts the web resource. |
78 GURL web_resource_server_; | 82 GURL web_resource_server_; |
79 | 83 |
80 // Indicates whether we should append locale to the web resource server URL. | 84 // Indicates whether we should append locale to the web resource server URL. |
81 bool apply_locale_to_url_; | 85 bool apply_locale_to_url_; |
82 | 86 |
83 // Pref name to store the last update's time. | 87 // Pref name to store the last update's time. |
84 const char* last_update_time_pref_name_; | 88 const char* last_update_time_pref_name_; |
85 | 89 |
86 // Delay on first fetch so we don't interfere with startup. | 90 // Delay on first fetch so we don't interfere with startup. |
87 int start_fetch_delay_ms_; | 91 int start_fetch_delay_ms_; |
88 | 92 |
89 // Delay between calls to update the web resource cache. This delay may be | 93 // Delay between calls to update the web resource cache. This delay may be |
90 // different for different builds of Chrome. | 94 // different for different builds of Chrome. |
91 int cache_update_delay_ms_; | 95 int cache_update_delay_ms_; |
92 | 96 |
93 DISALLOW_COPY_AND_ASSIGN(WebResourceService); | 97 DISALLOW_COPY_AND_ASSIGN(WebResourceService); |
94 }; | 98 }; |
95 | 99 |
96 #endif // CHROME_BROWSER_WEB_RESOURCE_WEB_RESOURCE_SERVICE_H_ | 100 #endif // CHROME_BROWSER_WEB_RESOURCE_WEB_RESOURCE_SERVICE_H_ |
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