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1 // Copyright 2013 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 #include "chrome/browser/ui/app_list/search/webstore_provider.h" | |
6 | |
7 #include <string> | |
8 | |
9 #include "base/bind.h" | |
10 #include "base/metrics/field_trial.h" | |
11 #include "base/strings/utf_string_conversions.h" | |
12 #include "base/values.h" | |
13 #include "chrome/browser/browser_process.h" | |
14 #include "chrome/browser/profiles/profile.h" | |
15 #include "chrome/browser/search/search.h" | |
16 #include "chrome/browser/ui/app_list/search/common/json_response_fetcher.h" | |
17 #include "chrome/browser/ui/app_list/search/search_webstore_result.h" | |
18 #include "chrome/browser/ui/app_list/search/webstore_result.h" | |
19 #include "chrome/common/extensions/extension_constants.h" | |
20 #include "url/gurl.h" | |
21 | |
22 namespace app_list { | |
23 | |
24 namespace { | |
25 | |
26 const char kKeyResults[] = "results"; | |
27 const char kKeyId[] = "id"; | |
28 const char kKeyLocalizedName[] = "localized_name"; | |
29 const char kKeyIconUrl[] = "icon_url"; | |
30 const size_t kMinimumQueryLength = 3u; | |
31 | |
32 // Returns true if the launcher should send queries to the web store server. | |
33 bool UseWebstoreSearch() { | |
34 const char kFieldTrialName[] = "LauncherUseWebstoreSearch"; | |
35 const char kEnable[] = "Enable"; | |
36 return base::FieldTrialList::FindFullName(kFieldTrialName) == kEnable; | |
37 } | |
38 | |
39 } // namespace | |
40 | |
41 WebstoreProvider::WebstoreProvider(Profile* profile, | |
42 AppListControllerDelegate* controller) | |
43 : profile_(profile), | |
44 controller_(controller) {} | |
45 | |
46 WebstoreProvider::~WebstoreProvider() {} | |
47 | |
48 void WebstoreProvider::Start(const base::string16& query) { | |
49 ClearResults(); | |
50 | |
51 // If |query| contains sensitive data, bail out and do not create the place | |
52 // holder "search-web-store" result. | |
53 if (IsSensitiveInput(query)) { | |
54 query_.clear(); | |
55 return; | |
56 } | |
57 | |
58 const std::string query_utf8 = UTF16ToUTF8(query); | |
59 | |
60 if (query_utf8.size() < kMinimumQueryLength) { | |
61 query_.clear(); | |
62 return; | |
63 } | |
64 | |
65 query_ = query_utf8; | |
66 const base::DictionaryValue* cached_result = cache_.Get(query_); | |
67 if (cached_result) { | |
68 ProcessWebstoreSearchResults(cached_result); | |
69 if (!webstore_search_fetched_callback_.is_null()) | |
70 webstore_search_fetched_callback_.Run(); | |
71 return; | |
72 } | |
73 | |
74 if (UseWebstoreSearch() && chrome::IsSuggestPrefEnabled(profile_)) { | |
75 if (!webstore_search_) { | |
76 webstore_search_.reset(new JSONResponseFetcher( | |
77 base::Bind(&WebstoreProvider::OnWebstoreSearchFetched, | |
78 base::Unretained(this)), | |
79 profile_->GetRequestContext())); | |
80 } | |
81 | |
82 StartThrottledQuery(base::Bind(&WebstoreProvider::StartQuery, | |
83 base::Unretained(this))); | |
84 } | |
85 | |
86 // Add a placeholder result which when clicked will run the user's query in a | |
87 // browser. This placeholder is removed when the search results arrive. | |
88 Add(scoped_ptr<ChromeSearchResult>( | |
89 new SearchWebstoreResult(profile_, query_utf8)).Pass()); | |
90 } | |
91 | |
92 void WebstoreProvider::Stop() { | |
93 if (webstore_search_) | |
94 webstore_search_->Stop(); | |
95 } | |
96 | |
97 void WebstoreProvider::StartQuery() { | |
98 // |query_| can be NULL when the query is scheduled but then canceled. | |
99 if (!webstore_search_ || query_.empty()) | |
100 return; | |
101 | |
102 webstore_search_->Start(extension_urls::GetWebstoreJsonSearchUrl( | |
103 query_, g_browser_process->GetApplicationLocale())); | |
104 } | |
105 | |
106 void WebstoreProvider::OnWebstoreSearchFetched( | |
107 scoped_ptr<base::DictionaryValue> json) { | |
108 ProcessWebstoreSearchResults(json.get()); | |
109 cache_.Put(query_, json.Pass()); | |
110 | |
111 if (!webstore_search_fetched_callback_.is_null()) | |
112 webstore_search_fetched_callback_.Run(); | |
113 } | |
114 | |
115 void WebstoreProvider::ProcessWebstoreSearchResults( | |
116 const base::DictionaryValue* json) { | |
117 const base::ListValue* result_list = NULL; | |
118 if (!json || | |
119 !json->GetList(kKeyResults, &result_list) || | |
120 !result_list || | |
121 result_list->empty()) { | |
122 return; | |
123 } | |
124 | |
125 bool first_result = true; | |
126 for (ListValue::const_iterator it = result_list->begin(); | |
127 it != result_list->end(); | |
128 ++it) { | |
129 const base::DictionaryValue* dict; | |
130 if (!(*it)->GetAsDictionary(&dict)) | |
131 continue; | |
132 | |
133 scoped_ptr<ChromeSearchResult> result(CreateResult(*dict)); | |
134 if (!result) | |
135 continue; | |
136 | |
137 if (first_result) { | |
138 // Clears "search in webstore" place holder results. | |
139 ClearResults(); | |
140 first_result = false; | |
141 } | |
142 | |
143 Add(result.Pass()); | |
144 } | |
145 } | |
146 | |
147 scoped_ptr<ChromeSearchResult> WebstoreProvider::CreateResult( | |
148 const base::DictionaryValue& dict) { | |
149 scoped_ptr<ChromeSearchResult> result; | |
150 | |
151 std::string app_id; | |
152 std::string localized_name; | |
153 std::string icon_url_string; | |
154 if (!dict.GetString(kKeyId, &app_id) || | |
155 !dict.GetString(kKeyLocalizedName, &localized_name) || | |
156 !dict.GetString(kKeyIconUrl, &icon_url_string)) { | |
157 return result.Pass(); | |
158 } | |
159 | |
160 GURL icon_url(icon_url_string); | |
161 if (!icon_url.is_valid()) | |
162 return result.Pass(); | |
163 | |
164 result.reset(new WebstoreResult( | |
165 profile_, app_id, localized_name, icon_url, controller_)); | |
166 return result.Pass(); | |
167 } | |
168 | |
169 } // namespace app_list | |
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