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Side by Side Diff: chrome/browser/autocomplete/autocomplete_controller.h

Issue 11414303: Make Google Search autocomplete provider cursor aware. (Closed) Base URL: http://git.chromium.org/git/chromium.git@trunk
Patch Set: Created 8 years ago
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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 #ifndef CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_CONTROLLER_H_ 5 #ifndef CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_CONTROLLER_H_
6 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_CONTROLLER_H_ 6 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_CONTROLLER_H_
7 7
8 #include "base/basictypes.h" 8 #include "base/basictypes.h"
9 #include "base/compiler_specific.h" 9 #include "base/compiler_specific.h"
10 #include "base/gtest_prod_util.h" 10 #include "base/gtest_prod_util.h"
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52 // instantiated. 52 // instantiated.
53 AutocompleteController(Profile* profile, 53 AutocompleteController(Profile* profile,
54 AutocompleteControllerDelegate* delegate, 54 AutocompleteControllerDelegate* delegate,
55 int provider_types); 55 int provider_types);
56 ~AutocompleteController(); 56 ~AutocompleteController();
57 57
58 // Starts an autocomplete query, which continues until all providers are 58 // Starts an autocomplete query, which continues until all providers are
59 // done or the query is Stop()ed. It is safe to Start() a new query without 59 // done or the query is Stop()ed. It is safe to Start() a new query without
60 // Stop()ing the previous one. 60 // Stop()ing the previous one.
61 // 61 //
62 // See AutocompleteInput::desired_tld() for meaning of |desired_tld|. 62 // See AutocompleteInput::AutocompleteInput(...) for more details regarding
63 // 63 // |input| params.
64 // |prevent_inline_autocomplete| is true if the generated result set should
65 // not require inline autocomplete for the default match. This is difficult
66 // to explain in the abstract; the practical use case is that after the user
67 // deletes text in the edit, the HistoryURLProvider should make sure not to
68 // promote a match requiring inline autocomplete too highly.
69 //
70 // |prefer_keyword| should be true when the keyword UI is onscreen; this will
71 // bias the autocomplete result set toward the keyword provider when the input
72 // string is a bare keyword.
73 //
74 // |allow_exact_keyword_match| should be false when triggering keyword mode on
75 // the input string would be surprising or wrong, e.g. when highlighting text
76 // in a page and telling the browser to search for it or navigate to it. This
77 // parameter only applies to substituting keywords.
78
79 // If |matches_requested| is BEST_MATCH or SYNCHRONOUS_MATCHES the controller
80 // asks the providers to only return matches which are synchronously
81 // available, which should mean that all providers will be done immediately.
82 // 64 //
83 // The controller calls AutocompleteControllerDelegate::OnResultChanged() from 65 // The controller calls AutocompleteControllerDelegate::OnResultChanged() from
84 // inside this call at least once. If matches are available later on that 66 // inside this call at least once. If matches are available later on that
85 // result in changing the result set the delegate is notified again. When the 67 // result in changing the result set the delegate is notified again. When the
86 // controller is done the notification AUTOCOMPLETE_CONTROLLER_RESULT_READY is 68 // controller is done the notification AUTOCOMPLETE_CONTROLLER_RESULT_READY is
87 // sent. 69 // sent.
88 void Start(const string16& text, 70 void Start(const AutocompleteInput& input);
89 const string16& desired_tld,
90 bool prevent_inline_autocomplete,
91 bool prefer_keyword,
92 bool allow_exact_keyword_match,
93 AutocompleteInput::MatchesRequested matches_requested);
94 71
95 // Cancels the current query, ensuring there will be no future notifications 72 // Cancels the current query, ensuring there will be no future notifications
96 // fired. If new matches have come in since the most recent notification was 73 // fired. If new matches have come in since the most recent notification was
97 // fired, they will be discarded. 74 // fired, they will be discarded.
98 // 75 //
99 // If |clear_result| is true, the controller will also erase the result set. 76 // If |clear_result| is true, the controller will also erase the result set.
100 void Stop(bool clear_result); 77 void Stop(bool clear_result);
101 78
102 // Begin asynchronously fetching zero-suggest suggestions for |url|. 79 // Begin asynchronously fetching zero-suggest suggestions for |url|.
103 // |user_text| is the text entered in the omnibox, which may be non-empty if 80 // |user_text| is the text entered in the omnibox, which may be non-empty if
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230 207
231 // Has StartZeroSuggest() been called but not Start()? 208 // Has StartZeroSuggest() been called but not Start()?
232 bool in_zero_suggest_; 209 bool in_zero_suggest_;
233 210
234 Profile* profile_; 211 Profile* profile_;
235 212
236 DISALLOW_COPY_AND_ASSIGN(AutocompleteController); 213 DISALLOW_COPY_AND_ASSIGN(AutocompleteController);
237 }; 214 };
238 215
239 #endif // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_CONTROLLER_H_ 216 #endif // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_CONTROLLER_H_
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