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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_AUTOFILL_CORE_BROWSER_FIELD_CANDIDATES_H_
#define COMPONENTS_AUTOFILL_CORE_BROWSER_FIELD_CANDIDATES_H_
#include <unordered_map>
#include <vector>
#include "components/autofill/core/browser/field_types.h"
namespace autofill {
// Represents a possible type for a given field.
struct FieldCandidate {
FieldCandidate(ServerFieldType field_type, float field_score);
// The associated type for this candidate.
ServerFieldType type = UNKNOWN_TYPE;
// A non-negative number indicating how sure the type is for this specific
// candidate. The higher the more confidence.
float score = 0.0f;
};
// Each field can be of different types. This class collects all these possible
// types and determines which type is the most likely.
class FieldCandidates {
public:
FieldCandidates();
FieldCandidates(const FieldCandidates& other);
~FieldCandidates();
// Includes a possible |type| for a given field.
//
// Callers are responsible for the scores they add. FieldCandidates is
// agnostic to the source of these scores and will select the best candidate
// based solely on their numeric values. BestHeuristicType() uses |score| to
// determine the most likely type for this given field. Please see
// field_candidates.cc for details on how this type is actually chosen.
void AddFieldCandidate(ServerFieldType type, float score);
// Determines the best type based on the current possible types.
ServerFieldType BestHeuristicType() const;
// Returns the underlying candidates.
//
// This reference is only valid while the FieldCandidates object is valid.
const std::vector<FieldCandidate>& field_candidates() const;
private:
// Internal storage for all the possible types for a given field.
std::vector<FieldCandidate> field_candidates_;
};
// A map from the field's unique name to its possible candidates.
using FieldCandidatesMap = std::unordered_map<base::string16, FieldCandidates>;
} // namespace autofill
#endif // COMPONENTS_AUTOFILL_CORE_BROWSER_FIELD_CANDIDATES_H_
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