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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/browser/autocomplete_history_manager.h"
#include <vector>
#include "base/profiler/scoped_tracker.h"
#include "base/strings/string16.h"
#include "base/strings/utf_string_conversions.h"
#include "components/autofill/core/browser/autofill_client.h"
#include "components/autofill/core/browser/autofill_driver.h"
#include "components/autofill/core/browser/autofill_experiments.h"
#include "components/autofill/core/browser/autofill_external_delegate.h"
#include "components/autofill/core/browser/suggestion.h"
#include "components/autofill/core/browser/validation.h"
#include "components/autofill/core/common/autofill_pref_names.h"
#include "components/autofill/core/common/form_data.h"
#include "components/prefs/pref_service.h"
namespace autofill {
namespace {
// Limit on the number of suggestions to appear in the pop-up menu under an
// text input element in a form.
const int kMaxAutocompleteMenuItems = 6;
bool IsTextField(const FormFieldData& field) {
return
field.form_control_type == "text" ||
field.form_control_type == "search" ||
field.form_control_type == "tel" ||
field.form_control_type == "url" ||
field.form_control_type == "email";
}
} // namespace
AutocompleteHistoryManager::AutocompleteHistoryManager(
AutofillDriver* driver,
AutofillClient* autofill_client)
: driver_(driver),
database_(autofill_client->GetDatabase()),
pending_query_handle_(0),
query_id_(0),
external_delegate_(NULL),
autofill_client_(autofill_client) {
DCHECK(autofill_client_);
}
AutocompleteHistoryManager::~AutocompleteHistoryManager() {
CancelPendingQuery();
}
void AutocompleteHistoryManager::OnGetAutocompleteSuggestions(
int query_id,
const base::string16& name,
const base::string16& prefix,
const std::string& form_control_type) {
CancelPendingQuery();
query_id_ = query_id;
if (!autofill_client_->IsAutocompleteEnabled() ||
form_control_type == "textarea" ||
IsInAutofillSuggestionsDisabledExperiment()) {
SendSuggestions(NULL);
return;
}
if (database_.get()) {
pending_query_handle_ = database_->GetFormValuesForElementName(
name, prefix, kMaxAutocompleteMenuItems, this);
}
}
void AutocompleteHistoryManager::OnWillSubmitForm(const FormData& form) {
if (!autofill_client_->IsAutocompleteEnabled())
return;
if (driver_->IsOffTheRecord())
return;
// We put the following restriction on stored FormFields:
// - non-empty name
// - non-empty value
// - text field
// - autocomplete is not disabled
// - value is not a credit card number
// - value is not a SSN
// - field was not identified as a CVC field (this is handled in
// AutofillManager)
std::vector<FormFieldData> values;
for (const FormFieldData& field : form.fields) {
if (!field.value.empty() &&
!field.name.empty() &&
IsTextField(field) &&
field.should_autocomplete &&
!IsValidCreditCardNumber(field.value) &&
!IsSSN(field.value)) {
values.push_back(field);
}
}
if (!values.empty() && database_.get())
database_->AddFormFields(values);
}
void AutocompleteHistoryManager::OnRemoveAutocompleteEntry(
const base::string16& name, const base::string16& value) {
if (database_.get())
database_->RemoveFormValueForElementName(name, value);
}
void AutocompleteHistoryManager::SetExternalDelegate(
AutofillExternalDelegate* delegate) {
external_delegate_ = delegate;
}
void AutocompleteHistoryManager::CancelPendingQuery() {
if (pending_query_handle_) {
if (database_.get())
database_->CancelRequest(pending_query_handle_);
pending_query_handle_ = 0;
}
}
void AutocompleteHistoryManager::SendSuggestions(
const std::vector<base::string16>* autocomplete_results) {
std::vector<Suggestion> suggestions;
if (autocomplete_results) {
for (const auto& result : *autocomplete_results) {
suggestions.push_back(Suggestion(result));
}
}
external_delegate_->OnSuggestionsReturned(query_id_, suggestions);
query_id_ = 0;
}
void AutocompleteHistoryManager::OnWebDataServiceRequestDone(
WebDataServiceBase::Handle h,
std::unique_ptr<WDTypedResult> result) {
// TODO(robliao): Remove ScopedTracker below once https://crbug.com/422460 is
// fixed.
tracked_objects::ScopedTracker tracking_profile(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"422460 AutocompleteHistoryManager::OnWebDataServiceRequestDone"));
DCHECK(pending_query_handle_);
pending_query_handle_ = 0;
DCHECK(result);
// Returning early here if |result| is NULL. We've seen this happen on
// Linux due to NFS dismounting and causing sql failures.
// See http://crbug.com/68783.
if (!result) {
SendSuggestions(NULL);
return;
}
DCHECK_EQ(AUTOFILL_VALUE_RESULT, result->GetType());
const WDResult<std::vector<base::string16>>* autofill_result =
static_cast<const WDResult<std::vector<base::string16>>*>(result.get());
std::vector<base::string16> suggestions = autofill_result->GetValue();
SendSuggestions(&suggestions);
}
} // namespace autofill
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