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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" | |
22 | 21 |
23 class KeywordExtensionsDelegate; | 22 class KeywordExtensionsDelegate; |
24 class Profile; | 23 class Profile; |
25 class TemplateURL; | 24 class TemplateURL; |
26 class TemplateURLService; | 25 class TemplateURLService; |
27 | 26 |
28 // Autocomplete provider for keyword input. | 27 // Autocomplete provider for keyword input. |
29 // | 28 // |
30 // After construction, the autocomplete controller repeatedly calls Start() | 29 // After construction, the autocomplete controller repeatedly calls Start() |
31 // with some user input, each time expecting to receive a small set of the best | 30 // with some user input, each time expecting to receive a small set of the best |
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108 // Leading whitespace in |*remaining_input| will be trimmed. | 107 // Leading whitespace in |*remaining_input| will be trimmed. |
109 static bool ExtractKeywordFromInput(const AutocompleteInput& input, | 108 static bool ExtractKeywordFromInput(const AutocompleteInput& input, |
110 base::string16* keyword, | 109 base::string16* keyword, |
111 base::string16* remaining_input); | 110 base::string16* remaining_input); |
112 | 111 |
113 // Determines the relevance for some input, given its type, whether the user | 112 // Determines the relevance for some input, given its type, whether the user |
114 // typed the complete keyword, and whether the user is in "prefer keyword | 113 // typed the complete keyword, and whether the user is in "prefer keyword |
115 // matches" mode, and whether the keyword supports replacement. | 114 // matches" mode, and whether the keyword supports replacement. |
116 // If |allow_exact_keyword_match| is false, the relevance for complete | 115 // If |allow_exact_keyword_match| is false, the relevance for complete |
117 // keywords that support replacements is degraded. | 116 // keywords that support replacements is degraded. |
118 static int CalculateRelevance(metrics::OmniboxInputType::Type type, | 117 static int CalculateRelevance(AutocompleteInput::Type type, |
119 bool complete, | 118 bool complete, |
120 bool support_replacement, | 119 bool support_replacement, |
121 bool prefer_keyword, | 120 bool prefer_keyword, |
122 bool allow_exact_keyword_match); | 121 bool allow_exact_keyword_match); |
123 | 122 |
124 // Creates a fully marked-up AutocompleteMatch from the user's input. | 123 // Creates a fully marked-up AutocompleteMatch from the user's input. |
125 // If |relevance| is negative, calculate a relevance based on heuristics. | 124 // If |relevance| is negative, calculate a relevance based on heuristics. |
126 AutocompleteMatch CreateAutocompleteMatch( | 125 AutocompleteMatch CreateAutocompleteMatch( |
127 const TemplateURL* template_url, | 126 const TemplateURL* template_url, |
128 const AutocompleteInput& input, | 127 const AutocompleteInput& input, |
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144 TemplateURLService* model_; | 143 TemplateURLService* model_; |
145 | 144 |
146 // Delegate to handle the extensions-only logic for KeywordProvider. | 145 // Delegate to handle the extensions-only logic for KeywordProvider. |
147 // NULL when extensions are not enabled. May be NULL for tests. | 146 // NULL when extensions are not enabled. May be NULL for tests. |
148 scoped_ptr<KeywordExtensionsDelegate> extensions_delegate_; | 147 scoped_ptr<KeywordExtensionsDelegate> extensions_delegate_; |
149 | 148 |
150 DISALLOW_COPY_AND_ASSIGN(KeywordProvider); | 149 DISALLOW_COPY_AND_ASSIGN(KeywordProvider); |
151 }; | 150 }; |
152 | 151 |
153 #endif // CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_PROVIDER_H_ | 152 #endif // CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_PROVIDER_H_ |
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