| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_UI_APP_LIST_SEARCH_COMMON_WEBSERVICE_SEARCH_PROVIDER_H_ |
| #define CHROME_BROWSER_UI_APP_LIST_SEARCH_COMMON_WEBSERVICE_SEARCH_PROVIDER_H_ |
| |
| #include "base/callback_forward.h" |
| #include "base/strings/string16.h" |
| #include "base/time/time.h" |
| #include "base/timer/timer.h" |
| #include "chrome/browser/ui/app_list/search/common/webservice_cache.h" |
| #include "chrome/browser/ui/app_list/search/search_provider.h" |
| |
| class Profile; |
| |
| namespace app_list { |
| |
| class WebserviceCache; |
| |
| // Helper class for webservice based searches. |
| class WebserviceSearchProvider : public SearchProvider { |
| public: |
| explicit WebserviceSearchProvider(Profile* profile); |
| virtual ~WebserviceSearchProvider(); |
| |
| // Validate the query for privacy and size. |
| bool IsValidQuery(const string16& query); |
| |
| // Start a query with throttling enabled. |
| void StartThrottledQuery(const base::Closure& start_query); |
| |
| void set_use_throttling(bool use) { use_throttling_ = use; } |
| |
| protected: |
| Profile* profile_; |
| WebserviceCache* cache_; // BrowserContextKeyedService, not owned. |
| |
| private: |
| bool IsSensitiveInput(const string16& query); |
| |
| // The timestamp when the last key event happened. |
| base::Time last_keytyped_; |
| |
| // The timer to throttle QPS. |
| base::OneShotTimer<WebserviceSearchProvider> query_throttler_; |
| |
| // The flag for tests. It prevents the throttling If set to false. |
| bool use_throttling_; |
| |
| DISALLOW_COPY_AND_ASSIGN(WebserviceSearchProvider); |
| }; |
| |
| } // namespace app_list |
| |
| #endif // CHROME_BROWSER_UI_APP_LIST_SEARCH_COMMON_WEBSERVICE_SEARCH_PROVIDER_H_ |