chrome/browser/autocomplete/autocomplete_classifier.cc

   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
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/autocomplete/autocomplete_classifier.h"
   6
   7 #include "base/auto_reset.h"
   8 #include "chrome/browser/autocomplete/autocomplete_controller.h"
   9 #include "chrome/browser/autocomplete/autocomplete_input.h"
  10 #include "chrome/browser/autocomplete/autocomplete_match.h"
  11 #include "chrome/browser/autocomplete/autocomplete_provider.h"
  12 #include "url/gurl.h"
  13
  14 // static
  15 const int AutocompleteClassifier::kDefaultOmniboxProviders =
  16     AutocompleteProvider::TYPE_BOOKMARK |
  17     AutocompleteProvider::TYPE_BUILTIN |
  18     AutocompleteProvider::TYPE_HISTORY_QUICK |
  19     AutocompleteProvider::TYPE_HISTORY_URL |
  20     AutocompleteProvider::TYPE_KEYWORD |
  21     AutocompleteProvider::TYPE_SEARCH |
  22     AutocompleteProvider::TYPE_SHORTCUTS |
  23     AutocompleteProvider::TYPE_ZERO_SUGGEST;
  24
  25 AutocompleteClassifier::AutocompleteClassifier(Profile* profile)
  26     : controller_(new AutocompleteController(profile, NULL,
  27                                              kDefaultOmniboxProviders)),
  28       inside_classify_(false) {
  29 }
  30
  31 AutocompleteClassifier::~AutocompleteClassifier() {
  32   // We should only reach here after Shutdown() has been called.
  33   DCHECK(!controller_.get());
  34 }
  35
  36 void AutocompleteClassifier::Classify(
  37     const base::string16& text,
  38     bool prefer_keyword,
  39     bool allow_exact_keyword_match,
  40     AutocompleteInput::PageClassification page_classification,
  41     AutocompleteMatch* match,
  42     GURL* alternate_nav_url) {
  43   DCHECK(!inside_classify_);
  44   base::AutoReset<bool> reset(&inside_classify_, true);
  45   controller_->Start(AutocompleteInput(
  46       text, base::string16::npos, base::string16(), GURL(),
  47       page_classification, true, prefer_keyword,
  48       allow_exact_keyword_match, false));
  49   DCHECK(controller_->done());
  50   const AutocompleteResult& result = controller_->result();
  51   if (result.empty()) {
  52     if (alternate_nav_url)
  53       *alternate_nav_url = GURL();
  54     return;
  55   }
  56
  57   DCHECK(result.default_match() != result.end());
  58   *match = *result.default_match();
  59   if (alternate_nav_url)
  60     *alternate_nav_url = result.alternate_nav_url();
  61 }
  62
  63 void AutocompleteClassifier::Shutdown() {
  64   controller_.reset();
  65 }