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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 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 | 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 "content/browser/utility_process_host.h" | 11 #include "content/browser/utility_process_host.h" |
12 #include "content/common/content_notification_types.h" | 12 #include "content/common/content_notification_types.h" |
13 | 13 |
14 class DictionaryValue; | |
15 class PrefService; | 14 class PrefService; |
16 class ResourceDispatcherHost; | 15 class ResourceDispatcherHost; |
17 | 16 |
| 17 namespace base { |
| 18 class DictionaryValue; |
| 19 } |
| 20 |
18 // A WebResourceService fetches data from a web resource server and store | 21 // A WebResourceService fetches data from a web resource server and store |
19 // locally as user preference. | 22 // locally as user preference. |
20 class WebResourceService : public UtilityProcessHost::Client { | 23 class WebResourceService : public UtilityProcessHost::Client { |
21 public: | 24 public: |
22 // Pass notification_type = NOTIFICATION_TYPE_COUNT if notification is not | 25 // Pass notification_type = NOTIFICATION_TYPE_COUNT if notification is not |
23 // required. | 26 // required. |
24 WebResourceService(PrefService* prefs, | 27 WebResourceService(PrefService* prefs, |
25 const char* web_resource_server, | 28 const char* web_resource_server, |
26 bool apply_locale_to_url_, | 29 bool apply_locale_to_url_, |
27 int notification_type, | 30 int notification_type, |
28 const char* last_update_time_pref_name, | 31 const char* last_update_time_pref_name, |
29 int start_fetch_delay, | 32 int start_fetch_delay, |
30 int cache_update_delay); | 33 int cache_update_delay); |
31 | 34 |
32 // Sleep until cache needs to be updated, but always for at least 5 seconds | 35 // Sleep until cache needs to be updated, but always for at least 5 seconds |
33 // so we don't interfere with startup. Then begin updating resources. | 36 // so we don't interfere with startup. Then begin updating resources. |
34 void StartAfterDelay(); | 37 void StartAfterDelay(); |
35 | 38 |
36 // We have successfully pulled data from a resource server; now launch | 39 // We have successfully pulled data from a resource server; now launch |
37 // the process that will parse the JSON, and then update the cache. | 40 // the process that will parse the JSON, and then update the cache. |
38 void UpdateResourceCache(const std::string& json_data); | 41 void UpdateResourceCache(const std::string& json_data); |
39 | 42 |
40 protected: | 43 protected: |
41 virtual ~WebResourceService(); | 44 virtual ~WebResourceService(); |
42 | 45 |
43 virtual void Unpack(const DictionaryValue& parsed_json) = 0; | 46 virtual void Unpack(const base::DictionaryValue& parsed_json) = 0; |
44 | 47 |
45 // If delay_ms is positive, schedule notification with the delay. | 48 // If delay_ms is positive, schedule notification with the delay. |
46 // If delay_ms is 0, notify immediately by calling WebResourceStateChange(). | 49 // If delay_ms is 0, notify immediately by calling WebResourceStateChange(). |
47 // If delay_ms is negative, do nothing. | 50 // If delay_ms is negative, do nothing. |
48 void PostNotification(int64 delay_ms); | 51 void PostNotification(int64 delay_ms); |
49 | 52 |
50 // We need to be able to load parsed resource data into preferences file, | 53 // We need to be able to load parsed resource data into preferences file, |
51 // and get proper install directory. | 54 // and get proper install directory. |
52 PrefService* prefs_; | 55 PrefService* prefs_; |
53 | 56 |
54 private: | 57 private: |
55 class WebResourceFetcher; | 58 class WebResourceFetcher; |
56 friend class WebResourceFetcher; | 59 friend class WebResourceFetcher; |
57 | 60 |
58 class UnpackerClient; | 61 class UnpackerClient; |
59 | 62 |
60 // Set in_fetch_ to false, clean up temp directories (in the future). | 63 // Set in_fetch_ to false, clean up temp directories (in the future). |
61 void EndFetch(); | 64 void EndFetch(); |
62 | 65 |
63 // Puts parsed json data in the right places, and writes to prefs file. | 66 // Puts parsed json data in the right places, and writes to prefs file. |
64 void OnWebResourceUnpacked(const DictionaryValue& parsed_json); | 67 void OnWebResourceUnpacked(const base::DictionaryValue& parsed_json); |
65 | 68 |
66 // Notify listeners that the state of a web resource has changed. | 69 // Notify listeners that the state of a web resource has changed. |
67 void WebResourceStateChange(); | 70 void WebResourceStateChange(); |
68 | 71 |
69 scoped_ptr<WebResourceFetcher> web_resource_fetcher_; | 72 scoped_ptr<WebResourceFetcher> web_resource_fetcher_; |
70 | 73 |
71 ResourceDispatcherHost* resource_dispatcher_host_; | 74 ResourceDispatcherHost* resource_dispatcher_host_; |
72 | 75 |
73 // Allows the creation of tasks to send a WEB_RESOURCE_STATE_CHANGED | 76 // Allows the creation of tasks to send a WEB_RESOURCE_STATE_CHANGED |
74 // notification. This allows the WebResourceService to notify the New Tab | 77 // notification. This allows the WebResourceService to notify the New Tab |
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100 int cache_update_delay_; | 103 int cache_update_delay_; |
101 | 104 |
102 // True if a task has been set to update the cache when a new web resource | 105 // True if a task has been set to update the cache when a new web resource |
103 // becomes available. | 106 // becomes available. |
104 bool web_resource_update_scheduled_; | 107 bool web_resource_update_scheduled_; |
105 | 108 |
106 DISALLOW_COPY_AND_ASSIGN(WebResourceService); | 109 DISALLOW_COPY_AND_ASSIGN(WebResourceService); |
107 }; | 110 }; |
108 | 111 |
109 #endif // CHROME_BROWSER_WEB_RESOURCE_WEB_RESOURCE_SERVICE_H_ | 112 #endif // CHROME_BROWSER_WEB_RESOURCE_WEB_RESOURCE_SERVICE_H_ |
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