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// Copyright 2013 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.
#include "components/autofill/core/common/form_field_data.h"
#include "base/pickle.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
namespace autofill {
namespace {
// Increment this anytime pickle format is modified as well as provide
// deserialization routine from previous kPickleVersion format.
const int kPickleVersion = 2;
void AddVectorToPickle(std::vector<base::string16> strings,
base::Pickle* pickle) {
pickle->WriteInt(static_cast<int>(strings.size()));
for (size_t i = 0; i < strings.size(); ++i) {
pickle->WriteString16(strings[i]);
}
}
bool ReadStringVector(base::PickleIterator* iter,
std::vector<base::string16>* strings) {
int size;
if (!iter->ReadInt(&size))
return false;
base::string16 pickle_data;
for (int i = 0; i < size; i++) {
if (!iter->ReadString16(&pickle_data))
return false;
strings->push_back(pickle_data);
}
return true;
}
template <typename T>
bool ReadAsInt(base::PickleIterator* iter, T* target_value) {
int pickle_data;
if (!iter->ReadInt(&pickle_data))
return false;
*target_value = static_cast<T>(pickle_data);
return true;
}
bool DeserializeCommonSection1(base::PickleIterator* iter,
FormFieldData* field_data) {
return iter->ReadString16(&field_data->label) &&
iter->ReadString16(&field_data->name) &&
iter->ReadString16(&field_data->value) &&
iter->ReadString(&field_data->form_control_type) &&
iter->ReadString(&field_data->autocomplete_attribute) &&
iter->ReadSizeT(&field_data->max_length) &&
iter->ReadBool(&field_data->is_autofilled) &&
iter->ReadBool(&field_data->is_checked) &&
iter->ReadBool(&field_data->is_checkable) &&
iter->ReadBool(&field_data->is_focusable) &&
iter->ReadBool(&field_data->should_autocomplete);
}
bool DeserializeCommonSection2(base::PickleIterator* iter,
FormFieldData* field_data) {
return ReadAsInt(iter, &field_data->text_direction) &&
ReadStringVector(iter, &field_data->option_values) &&
ReadStringVector(iter, &field_data->option_contents);
}
bool DeserializeVersion2Specific(base::PickleIterator* iter,
FormFieldData* field_data) {
return ReadAsInt(iter, &field_data->role);
}
} // namespace
FormFieldData::FormFieldData()
: max_length(0),
is_autofilled(false),
is_checked(false),
is_checkable(false),
is_focusable(false),
should_autocomplete(true),
role(ROLE_ATTRIBUTE_OTHER),
text_direction(base::i18n::UNKNOWN_DIRECTION) {
}
FormFieldData::~FormFieldData() {
}
bool FormFieldData::SameFieldAs(const FormFieldData& field) const {
// A FormFieldData stores a value, but the value is not part of the identity
// of the field, so we don't want to compare the values.
return label == field.label && name == field.name &&
form_control_type == field.form_control_type &&
autocomplete_attribute == field.autocomplete_attribute &&
max_length == field.max_length &&
// is_checked and is_autofilled counts as "value" since these change
// when we fill things in.
is_checkable == field.is_checkable &&
is_focusable == field.is_focusable &&
should_autocomplete == field.should_autocomplete &&
role == field.role && text_direction == field.text_direction;
// The option values/contents which are the list of items in the list
// of a drop-down are currently not considered part of the identity of
// a form element. This is debatable, since one might base heuristics
// on the types of elements that are available. Alternatively, one
// could imagine some forms that dynamically change the element
// contents (say, insert years starting from the current year) that
// should not be considered changes in the structure of the form.
}
bool FormFieldData::operator<(const FormFieldData& field) const {
// Like operator==, this ignores the value.
if (label < field.label) return true;
if (label > field.label) return false;
if (name < field.name) return true;
if (name > field.name) return false;
if (form_control_type < field.form_control_type) return true;
if (form_control_type > field.form_control_type) return false;
if (autocomplete_attribute < field.autocomplete_attribute) return true;
if (autocomplete_attribute > field.autocomplete_attribute) return false;
if (max_length < field.max_length) return true;
if (max_length > field.max_length) return false;
// Skip |is_checked| and |is_autofilled| as in SameFieldAs.
if (is_checkable < field.is_checkable) return true;
if (is_checkable > field.is_checkable) return false;
if (is_focusable < field.is_focusable) return true;
if (is_focusable > field.is_focusable) return false;
if (should_autocomplete < field.should_autocomplete) return true;
if (should_autocomplete > field.should_autocomplete) return false;
if (role < field.role) return true;
if (role > field.role) return false;
if (text_direction < field.text_direction) return true;
if (text_direction > field.text_direction) return false;
// See operator== above for why we don't check option_values/contents.
return false;
}
void SerializeFormFieldData(const FormFieldData& field_data,
base::Pickle* pickle) {
pickle->WriteInt(kPickleVersion);
pickle->WriteString16(field_data.label);
pickle->WriteString16(field_data.name);
pickle->WriteString16(field_data.value);
pickle->WriteString(field_data.form_control_type);
pickle->WriteString(field_data.autocomplete_attribute);
pickle->WriteSizeT(field_data.max_length);
pickle->WriteBool(field_data.is_autofilled);
pickle->WriteBool(field_data.is_checked);
pickle->WriteBool(field_data.is_checkable);
pickle->WriteBool(field_data.is_focusable);
pickle->WriteBool(field_data.should_autocomplete);
pickle->WriteInt(field_data.role);
pickle->WriteInt(field_data.text_direction);
AddVectorToPickle(field_data.option_values, pickle);
AddVectorToPickle(field_data.option_contents, pickle);
}
bool DeserializeFormFieldData(base::PickleIterator* iter,
FormFieldData* field_data) {
int version;
FormFieldData temp_form_field_data;
if (!iter->ReadInt(&version)) {
LOG(ERROR) << "Bad pickle of FormFieldData, no version present";
return false;
}
switch (version) {
case 1: {
if (!DeserializeCommonSection1(iter, &temp_form_field_data) ||
!DeserializeCommonSection2(iter, &temp_form_field_data)) {
LOG(ERROR) << "Could not deserialize FormFieldData from pickle";
return false;
}
break;
}
case 2: {
if (!DeserializeCommonSection1(iter, &temp_form_field_data) ||
!DeserializeVersion2Specific(iter, &temp_form_field_data) ||
!DeserializeCommonSection2(iter, &temp_form_field_data)) {
LOG(ERROR) << "Could not deserialize FormFieldData from pickle";
return false;
}
break;
}
default: {
LOG(ERROR) << "Unknown FormFieldData pickle version " << version;
return false;
}
}
*field_data = temp_form_field_data;
return true;
}
std::ostream& operator<<(std::ostream& os, const FormFieldData& field) {
return os << base::UTF16ToUTF8(field.label) << " "
<< base::UTF16ToUTF8(field.name) << " "
<< base::UTF16ToUTF8(field.value) << " " << field.form_control_type
<< " " << field.autocomplete_attribute << " " << field.max_length
<< " " << (field.is_autofilled ? "true" : "false") << " "
<< (field.is_checked ? "true" : "false") << " "
<< (field.is_checkable ? "true" : "false") << " "
<< (field.is_focusable ? "true" : "false") << " "
<< (field.should_autocomplete ? "true" : "false") << " "
<< field.role << " " << field.text_direction;
}
} // namespace autofill
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