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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 #include "components/ntp_snippets/ntp_snippets_service.h" | 5 #include "components/ntp_snippets/ntp_snippets_service.h" |
6 | 6 |
7 #include "base/files/file_path.h" | 7 #include "base/files/file_path.h" |
8 #include "base/files/file_util.h" | 8 #include "base/files/file_util.h" |
9 #include "base/json/json_string_value_serializer.h" | 9 #include "base/json/json_string_value_serializer.h" |
10 #include "base/location.h" | 10 #include "base/location.h" |
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42 snippets_fetcher_(std::move(snippets_fetcher)), | 42 snippets_fetcher_(std::move(snippets_fetcher)), |
43 weak_ptr_factory_(this) { | 43 weak_ptr_factory_(this) { |
44 snippets_fetcher_callback_ = snippets_fetcher_->AddCallback( | 44 snippets_fetcher_callback_ = snippets_fetcher_->AddCallback( |
45 base::Bind(&NTPSnippetsService::OnSnippetsDownloaded, | 45 base::Bind(&NTPSnippetsService::OnSnippetsDownloaded, |
46 weak_ptr_factory_.GetWeakPtr())); | 46 weak_ptr_factory_.GetWeakPtr())); |
47 } | 47 } |
48 | 48 |
49 NTPSnippetsService::~NTPSnippetsService() {} | 49 NTPSnippetsService::~NTPSnippetsService() {} |
50 | 50 |
51 void NTPSnippetsService::Init(bool enabled) { | 51 void NTPSnippetsService::Init(bool enabled) { |
| 52 // If enabled, get snippets immediately. If we've downloaded them before, |
| 53 // this will just read from disk. |
| 54 if (enabled) |
| 55 FetchSnippets(false); |
| 56 |
52 // The scheduler only exists on Android so far, it's null on other platforms. | 57 // The scheduler only exists on Android so far, it's null on other platforms. |
53 if (!scheduler_) | 58 if (!scheduler_) |
54 return; | 59 return; |
55 | 60 |
56 if (enabled) | 61 if (enabled) |
57 scheduler_->Schedule(kDefaultFetchingIntervalSeconds); | 62 scheduler_->Schedule(kDefaultFetchingIntervalSeconds); |
58 else | 63 else |
59 scheduler_->Unschedule(); | 64 scheduler_->Unschedule(); |
60 } | 65 } |
61 | 66 |
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77 | 82 |
78 void NTPSnippetsService::RemoveObserver(NTPSnippetsServiceObserver* observer) { | 83 void NTPSnippetsService::RemoveObserver(NTPSnippetsServiceObserver* observer) { |
79 observers_.RemoveObserver(observer); | 84 observers_.RemoveObserver(observer); |
80 } | 85 } |
81 | 86 |
82 void NTPSnippetsService::OnFileReadDone(const std::string& json) { | 87 void NTPSnippetsService::OnFileReadDone(const std::string& json) { |
83 LoadFromJSONString(json); | 88 LoadFromJSONString(json); |
84 } | 89 } |
85 | 90 |
86 bool NTPSnippetsService::LoadFromJSONString(const std::string& str) { | 91 bool NTPSnippetsService::LoadFromJSONString(const std::string& str) { |
| 92 snippets_.clear(); |
| 93 |
87 JSONStringValueDeserializer deserializer(str); | 94 JSONStringValueDeserializer deserializer(str); |
88 int error_code; | 95 int error_code; |
89 std::string error_message; | 96 std::string error_message; |
90 | 97 |
91 scoped_ptr<base::Value> deserialized = | 98 scoped_ptr<base::Value> deserialized = |
92 deserializer.Deserialize(&error_code, &error_message); | 99 deserializer.Deserialize(&error_code, &error_message); |
93 if (!deserialized) | 100 if (!deserialized) |
94 return false; | 101 return false; |
95 | 102 |
96 const base::DictionaryValue* top_dict = NULL; | 103 const base::DictionaryValue* top_dict = NULL; |
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125 void NTPSnippetsService::OnSnippetsDownloaded( | 132 void NTPSnippetsService::OnSnippetsDownloaded( |
126 const base::FilePath& download_path) { | 133 const base::FilePath& download_path) { |
127 base::PostTaskAndReplyWithResult( | 134 base::PostTaskAndReplyWithResult( |
128 file_task_runner_.get(), FROM_HERE, | 135 file_task_runner_.get(), FROM_HERE, |
129 base::Bind(&ReadFileToString, download_path), | 136 base::Bind(&ReadFileToString, download_path), |
130 base::Bind(&NTPSnippetsService::OnFileReadDone, | 137 base::Bind(&NTPSnippetsService::OnFileReadDone, |
131 weak_ptr_factory_.GetWeakPtr())); | 138 weak_ptr_factory_.GetWeakPtr())); |
132 } | 139 } |
133 | 140 |
134 } // namespace ntp_snippets | 141 } // namespace ntp_snippets |
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