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      1 // Copyright 2014 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 #ifndef COMPONENTS_OMNIBOX_AUTOCOMPLETE_SCHEME_CLASSIFIER_H_
      6 #define COMPONENTS_OMNIBOX_AUTOCOMPLETE_SCHEME_CLASSIFIER_H_
      7 
      8 #include <string>
      9 
     10 #include "components/metrics/proto/omnibox_input_type.pb.h"
     11 
     12 // An interface that gives embedders the ability to automatically classify the
     13 // omnibox input type based on an explicitly-specified schemes.  If users type
     14 // an input with an explicit scheme other than http, https, or file, this class
     15 // will be used to try and determine whether the input should be treated as a
     16 // URL (for known schemes we want to handle) or a query (for known schemes that
     17 // should be blocked), or if the scheme alone isn't sufficient to make a
     18 // determination.
     19 class AutocompleteSchemeClassifier {
     20  public:
     21   virtual ~AutocompleteSchemeClassifier() {}
     22 
     23   // Checks |scheme| and returns the type of the input if the scheme is known
     24   // and not blocked. Returns metrics::OmniboxInputType::INVALID if it's unknown
     25   // or the classifier implementation cannot handle.
     26   virtual metrics::OmniboxInputType::Type GetInputTypeForScheme(
     27       const std::string& scheme) const = 0;
     28 };
     29 
     30 #endif  // COMPONENTS_OMNIBOX_AUTOCOMPLETE_SCHEME_CLASSIFIER_H_
     31