webservice_search_provider.h revision 424c4d7b64af9d0d8fd9624f381f469654d5e3d2 
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#ifndef CHROME_BROWSER_UI_APP_LIST_SEARCH_COMMON_WEBSERVICE_SEARCH_PROVIDER_H_
6#define CHROME_BROWSER_UI_APP_LIST_SEARCH_COMMON_WEBSERVICE_SEARCH_PROVIDER_H_
7
8#include "base/callback_forward.h"
9#include "base/strings/string16.h"
10#include "base/time/time.h"
11#include "base/timer/timer.h"
12#include "chrome/browser/ui/app_list/search/search_provider.h"
13
14namespace app_list {
15
16// Helper class for webservice based searches.
17class WebserviceSearchProvider : public SearchProvider {
18 public:
19  WebserviceSearchProvider();
20  virtual ~WebserviceSearchProvider();
21
22  void StartThrottledQuery(const base::Closure& start_query);
23  bool IsSensitiveInput(const string16& query);
24
25  void set_use_throttling(bool use) { use_throttling_ = use; }
26
27 private:
28  // The timestamp when the last key event happened.
29  base::Time last_keytyped_;
30
31  // The timer to throttle QPS to the webstore search .
32  base::OneShotTimer<WebserviceSearchProvider> query_throttler_;
33
34  // The flag for tests. It prevents the throttling If set to false.
35  bool use_throttling_;
36
37  DISALLOW_COPY_AND_ASSIGN(WebserviceSearchProvider);
38};
39
40}  // namespace app_list
41
42#endif  // CHROME_BROWSER_UI_APP_LIST_SEARCH_COMMON_WEBSERVICE_SEARCH_PROVIDER_H_
43