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// Copyright (c) 2011 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 CHROME_BROWSER_AUTOFILL_FORM_GROUP_H_
#define CHROME_BROWSER_AUTOFILL_FORM_GROUP_H_
#pragma once
#include <vector>
#include "base/string16.h"
#include "base/string_util.h"
#include "chrome/browser/autofill/field_types.h"
// This class is an interface for collections of form fields, grouped by type.
// The information in objects of this class is managed by the
// PersonalDataManager.
class FormGroup {
public:
virtual ~FormGroup() {}
// Used to determine the type of a field based on the text that a user enters
// into the field. The field types can then be reported back to the server.
// This method is additive on |matching_types|.
virtual void GetMatchingTypes(const string16& text,
FieldTypeSet* matching_types) const;
// Returns a set of AutofillFieldTypes for which this FormGroup has non-empty
// data. This method is additive on |non_empty_types|.
virtual void GetNonEmptyTypes(FieldTypeSet* non_empty_types) const;
// Returns the literal string associated with |type|.
virtual string16 GetInfo(AutofillFieldType type) const = 0;
// Used to populate this FormGroup object with data.
virtual void SetInfo(AutofillFieldType type, const string16& value) = 0;
// Returns the string that should be auto-filled into a text field given the
// type of that field.
virtual string16 GetCanonicalizedInfo(AutofillFieldType type) const;
// Used to populate this FormGroup object with data. Canonicalizes the data
// prior to storing, if appropriate.
virtual bool SetCanonicalizedInfo(AutofillFieldType type,
const string16& value);
// Returns the label for this FormGroup item. This should be overridden for
// form group items that implement a label.
virtual const string16 Label() const;
// Returns true if the field data in |form_group| does not match the field
// data in this FormGroup.
virtual bool operator!=(const FormGroup& form_group) const;
// Returns true if the data in this FormGroup is a subset of the data in
// |form_group|.
bool IsSubsetOf(const FormGroup& form_group) const;
// Returns true if the values of the intersection of the available field types
// are equal. If the intersection is empty, the method returns false.
bool IntersectionOfTypesHasEqualValues(const FormGroup& form_group) const;
// Merges the field data in |form_group| with this FormGroup.
void MergeWith(const FormGroup& form_group);
// Overwrites the field data in |form_group| with this FormGroup.
void OverwriteWith(const FormGroup& form_group);
protected:
// AutofillProfile needs to call into GetSupportedTypes() for objects of
// non-AutofillProfile type, for which mere inheritance is insufficient.
friend class AutofillProfile;
// Returns a set of AutofillFieldTypes for which this FormGroup can store
// data. This method is additive on |supported_types|.
virtual void GetSupportedTypes(FieldTypeSet* supported_types) const = 0;
};
#endif // CHROME_BROWSER_AUTOFILL_FORM_GROUP_H_
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