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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 // This file contains the Search autocomplete provider. This provider is | 5 // This file contains the Search autocomplete provider. This provider is |
6 // responsible for all autocomplete entries that start with "Search <engine> | 6 // responsible for all autocomplete entries that start with "Search <engine> |
7 // for ...", including searching for the current input string, search | 7 // for ...", including searching for the current input string, search |
8 // history, and search suggestions. An instance of it gets created and | 8 // history, and search suggestions. An instance of it gets created and |
9 // managed by the autocomplete controller. | 9 // managed by the autocomplete controller. |
10 | 10 |
11 #ifndef CHROME_BROWSER_AUTOCOMPLETE_SEARCH_PROVIDER_H_ | 11 #ifndef CHROME_BROWSER_AUTOCOMPLETE_SEARCH_PROVIDER_H_ |
12 #define CHROME_BROWSER_AUTOCOMPLETE_SEARCH_PROVIDER_H_ | 12 #define CHROME_BROWSER_AUTOCOMPLETE_SEARCH_PROVIDER_H_ |
13 | 13 |
14 #include "base/basictypes.h" | 14 #include "base/basictypes.h" |
15 #include "base/compiler_specific.h" | 15 #include "base/compiler_specific.h" |
16 #include "base/memory/scoped_ptr.h" | 16 #include "base/memory/scoped_ptr.h" |
17 #include "base/time/time.h" | 17 #include "base/time/time.h" |
18 #include "base/timer/timer.h" | 18 #include "base/timer/timer.h" |
19 #include "chrome/browser/autocomplete/answers_cache.h" | 19 #include "chrome/browser/autocomplete/answers_cache.h" |
20 #include "chrome/browser/autocomplete/base_search_provider.h" | 20 #include "chrome/browser/autocomplete/base_search_provider.h" |
21 #include "components/metrics/proto/omnibox_input_type.pb.h" | 21 #include "components/metrics/proto/omnibox_input_type.pb.h" |
22 #include "components/search_engines/template_url.h" | 22 #include "components/search_engines/template_url.h" |
23 #include "net/url_request/url_fetcher_delegate.h" | 23 #include "net/url_request/url_fetcher_delegate.h" |
24 | 24 |
| 25 class AutocompleteProviderDelegate; |
25 class AutocompleteProviderListener; | 26 class AutocompleteProviderListener; |
26 class AutocompleteResult; | 27 class AutocompleteResult; |
27 class Profile; | |
28 class SearchProviderTest; | 28 class SearchProviderTest; |
29 class TemplateURLService; | 29 class TemplateURLService; |
30 | 30 |
31 namespace history { | 31 namespace history { |
32 struct KeywordSearchTermVisit; | 32 struct KeywordSearchTermVisit; |
33 } | 33 } |
34 | 34 |
35 namespace net { | 35 namespace net { |
36 class URLFetcher; | 36 class URLFetcher; |
37 } | 37 } |
38 | 38 |
39 // Autocomplete provider for searches and suggestions from a search engine. | 39 // Autocomplete provider for searches and suggestions from a search engine. |
40 // | 40 // |
41 // After construction, the autocomplete controller repeatedly calls Start() | 41 // After construction, the autocomplete controller repeatedly calls Start() |
42 // with some user input, each time expecting to receive a small set of the best | 42 // with some user input, each time expecting to receive a small set of the best |
43 // matches (either synchronously or asynchronously). | 43 // matches (either synchronously or asynchronously). |
44 // | 44 // |
45 // Initially the provider creates a match that searches for the current input | 45 // Initially the provider creates a match that searches for the current input |
46 // text. It also starts a task to query the Suggest servers. When that data | 46 // text. It also starts a task to query the Suggest servers. When that data |
47 // comes back, the provider creates and returns matches for the best | 47 // comes back, the provider creates and returns matches for the best |
48 // suggestions. | 48 // suggestions. |
49 class SearchProvider : public BaseSearchProvider, | 49 class SearchProvider : public BaseSearchProvider, |
50 public net::URLFetcherDelegate { | 50 public net::URLFetcherDelegate { |
51 public: | 51 public: |
52 SearchProvider(AutocompleteProviderListener* listener, | 52 SearchProvider(AutocompleteProviderListener* listener, |
53 TemplateURLService* template_url_service, | 53 TemplateURLService* template_url_service, |
54 Profile* profile); | 54 scoped_ptr<AutocompleteProviderDelegate> delegate); |
55 | 55 |
56 // Extracts the suggest response metadata which SearchProvider previously | 56 // Extracts the suggest response metadata which SearchProvider previously |
57 // stored for |match|. | 57 // stored for |match|. |
58 static std::string GetSuggestMetadata(const AutocompleteMatch& match); | 58 static std::string GetSuggestMetadata(const AutocompleteMatch& match); |
59 | 59 |
60 // Answers prefetch handling - register displayed answers. Takes the top | 60 // Answers prefetch handling - register displayed answers. Takes the top |
61 // match for Autocomplete and registers the contained answer data, if any. | 61 // match for Autocomplete and registers the contained answer data, if any. |
62 void RegisterDisplayedAnswers(const AutocompleteResult& result); | 62 void RegisterDisplayedAnswers(const AutocompleteResult& result); |
63 | 63 |
64 // AutocompleteProvider: | 64 // AutocompleteProvider: |
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358 base::TimeTicks token_expiration_time_; | 358 base::TimeTicks token_expiration_time_; |
359 | 359 |
360 // Answers prefetch management. | 360 // Answers prefetch management. |
361 AnswersCache answers_cache_; // Cache for last answers seen. | 361 AnswersCache answers_cache_; // Cache for last answers seen. |
362 AnswersQueryData prefetch_data_; // Data to use for query prefetching. | 362 AnswersQueryData prefetch_data_; // Data to use for query prefetching. |
363 | 363 |
364 DISALLOW_COPY_AND_ASSIGN(SearchProvider); | 364 DISALLOW_COPY_AND_ASSIGN(SearchProvider); |
365 }; | 365 }; |
366 | 366 |
367 #endif // CHROME_BROWSER_AUTOCOMPLETE_SEARCH_PROVIDER_H_ | 367 #endif // CHROME_BROWSER_AUTOCOMPLETE_SEARCH_PROVIDER_H_ |
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