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 "components/metrics/proto/omnibox_event.pb.h"
  10 #include "components/omnibox/autocomplete_input.h"
  11 #include "components/omnibox/autocomplete_match.h"
  12 #include "components/omnibox/autocomplete_provider.h"
  13 #include "url/gurl.h"
  14
  15 // static
  16 const int AutocompleteClassifier::kDefaultOmniboxProviders =
  17     AutocompleteProvider::TYPE_BOOKMARK |
  18     AutocompleteProvider::TYPE_BUILTIN |
  19     AutocompleteProvider::TYPE_HISTORY_QUICK |
  20     AutocompleteProvider::TYPE_HISTORY_URL |
  21     AutocompleteProvider::TYPE_KEYWORD |
  22     AutocompleteProvider::TYPE_SEARCH |
  23     AutocompleteProvider::TYPE_SHORTCUTS |
  24     AutocompleteProvider::TYPE_ZERO_SUGGEST;
  25
  26 AutocompleteClassifier::AutocompleteClassifier(
  27     scoped_ptr<AutocompleteController> controller,
  28     scoped_ptr<AutocompleteSchemeClassifier> scheme_classifier)
  29     : controller_(controller.Pass()),
  30       scheme_classifier_(scheme_classifier.Pass()),
  31       inside_classify_(false) {
  32 }
  33
  34 AutocompleteClassifier::~AutocompleteClassifier() {
  35   // We should only reach here after Shutdown() has been called.
  36   DCHECK(!controller_.get());
  37 }
  38
  39 void AutocompleteClassifier::Classify(
  40     const base::string16& text,
  41     bool prefer_keyword,
  42     bool allow_exact_keyword_match,
  43     metrics::OmniboxEventProto::PageClassification page_classification,
  44     AutocompleteMatch* match,
  45     GURL* alternate_nav_url) {
  46   DCHECK(!inside_classify_);
  47   base::AutoReset<bool> reset(&inside_classify_, true);
  48   controller_->Start(AutocompleteInput(
  49       text, base::string16::npos, std::string(), GURL(), page_classification,
  50       true, prefer_keyword, allow_exact_keyword_match, false,
  51       *scheme_classifier_));
  52   DCHECK(controller_->done());
  53   const AutocompleteResult& result = controller_->result();
  54   if (result.empty()) {
  55     if (alternate_nav_url)
  56       *alternate_nav_url = GURL();
  57     return;
  58   }
  59
  60   DCHECK(result.default_match() != result.end());
  61   *match = *result.default_match();
  62   if (alternate_nav_url)
  63     *alternate_nav_url = result.alternate_nav_url();
  64 }
  65
  66 void AutocompleteClassifier::Shutdown() {
  67   controller_.reset();
  68 }