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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 keyword autocomplete provider. The keyword provider | 5 // This file contains the keyword autocomplete provider. The keyword provider |
| 6 // is responsible for remembering/suggesting user "search keyword queries" | 6 // is responsible for remembering/suggesting user "search keyword queries" |
| 7 // (e.g. "imdb Godzilla") and then fixing them up into valid URLs. An | 7 // (e.g. "imdb Godzilla") and then fixing them up into valid URLs. An |
| 8 // instance of it gets created and managed by the autocomplete controller. | 8 // instance of it gets created and managed by the autocomplete controller. |
| 9 // KeywordProvider uses a TemplateURLService to find the set of keywords. | 9 // KeywordProvider uses a TemplateURLService to find the set of keywords. |
| 10 | 10 |
| 11 #ifndef CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_PROVIDER_H_ | 11 #ifndef CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_PROVIDER_H_ |
| 12 #define CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_PROVIDER_H_ | 12 #define CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_PROVIDER_H_ |
| 13 | 13 |
| 14 #include <string> | 14 #include <string> |
| 15 | 15 |
| 16 #include "base/basictypes.h" | 16 #include "base/basictypes.h" |
| 17 #include "base/compiler_specific.h" | 17 #include "base/compiler_specific.h" |
| 18 #include "base/memory/scoped_ptr.h" | 18 #include "base/memory/scoped_ptr.h" |
| 19 #include "chrome/browser/autocomplete/autocomplete_input.h" | 19 #include "chrome/browser/autocomplete/autocomplete_input.h" |
| 20 #include "chrome/browser/autocomplete/autocomplete_provider.h" | 20 #include "chrome/browser/autocomplete/autocomplete_provider.h" |
| 21 #include "components/metrics/proto/omnibox_input_type.pb.h" |
| 21 | 22 |
| 22 class KeywordExtensionsDelegate; | 23 class KeywordExtensionsDelegate; |
| 23 class Profile; | 24 class Profile; |
| 24 class TemplateURL; | 25 class TemplateURL; |
| 25 class TemplateURLService; | 26 class TemplateURLService; |
| 26 | 27 |
| 27 // Autocomplete provider for keyword input. | 28 // Autocomplete provider for keyword input. |
| 28 // | 29 // |
| 29 // After construction, the autocomplete controller repeatedly calls Start() | 30 // After construction, the autocomplete controller repeatedly calls Start() |
| 30 // with some user input, each time expecting to receive a small set of the best | 31 // with some user input, each time expecting to receive a small set of the best |
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| 107 // Leading whitespace in |*remaining_input| will be trimmed. | 108 // Leading whitespace in |*remaining_input| will be trimmed. |
| 108 static bool ExtractKeywordFromInput(const AutocompleteInput& input, | 109 static bool ExtractKeywordFromInput(const AutocompleteInput& input, |
| 109 base::string16* keyword, | 110 base::string16* keyword, |
| 110 base::string16* remaining_input); | 111 base::string16* remaining_input); |
| 111 | 112 |
| 112 // Determines the relevance for some input, given its type, whether the user | 113 // Determines the relevance for some input, given its type, whether the user |
| 113 // typed the complete keyword, and whether the user is in "prefer keyword | 114 // typed the complete keyword, and whether the user is in "prefer keyword |
| 114 // matches" mode, and whether the keyword supports replacement. | 115 // matches" mode, and whether the keyword supports replacement. |
| 115 // If |allow_exact_keyword_match| is false, the relevance for complete | 116 // If |allow_exact_keyword_match| is false, the relevance for complete |
| 116 // keywords that support replacements is degraded. | 117 // keywords that support replacements is degraded. |
| 117 static int CalculateRelevance(AutocompleteInput::Type type, | 118 static int CalculateRelevance(metrics::OmniboxInputType::Type type, |
| 118 bool complete, | 119 bool complete, |
| 119 bool support_replacement, | 120 bool support_replacement, |
| 120 bool prefer_keyword, | 121 bool prefer_keyword, |
| 121 bool allow_exact_keyword_match); | 122 bool allow_exact_keyword_match); |
| 122 | 123 |
| 123 // Creates a fully marked-up AutocompleteMatch from the user's input. | 124 // Creates a fully marked-up AutocompleteMatch from the user's input. |
| 124 // If |relevance| is negative, calculate a relevance based on heuristics. | 125 // If |relevance| is negative, calculate a relevance based on heuristics. |
| 125 AutocompleteMatch CreateAutocompleteMatch( | 126 AutocompleteMatch CreateAutocompleteMatch( |
| 126 const TemplateURL* template_url, | 127 const TemplateURL* template_url, |
| 127 const AutocompleteInput& input, | 128 const AutocompleteInput& input, |
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| 143 TemplateURLService* model_; | 144 TemplateURLService* model_; |
| 144 | 145 |
| 145 // Delegate to handle the extensions-only logic for KeywordProvider. | 146 // Delegate to handle the extensions-only logic for KeywordProvider. |
| 146 // NULL when extensions are not enabled. May be NULL for tests. | 147 // NULL when extensions are not enabled. May be NULL for tests. |
| 147 scoped_ptr<KeywordExtensionsDelegate> extensions_delegate_; | 148 scoped_ptr<KeywordExtensionsDelegate> extensions_delegate_; |
| 148 | 149 |
| 149 DISALLOW_COPY_AND_ASSIGN(KeywordProvider); | 150 DISALLOW_COPY_AND_ASSIGN(KeywordProvider); |
| 150 }; | 151 }; |
| 151 | 152 |
| 152 #endif // CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_PROVIDER_H_ | 153 #endif // CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_PROVIDER_H_ |
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