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// Copyright 2017 The Chromium Authors
// 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/ui/region_combobox_model.h"
#include <utility>
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/observer_list.h"
#include "base/strings/utf_string_conversions.h"
#include "components/autofill/core/browser/geo/region_data_loader.h"
#include "components/strings/grit/components_strings.h"
#include "third_party/libaddressinput/src/cpp/include/libaddressinput/region_data.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/models/combobox_model_observer.h"
namespace autofill {
RegionComboboxModel::RegionComboboxModel()
: failed_to_load_data_(false), region_data_loader_(nullptr) {}
RegionComboboxModel::~RegionComboboxModel() {
if (region_data_loader_)
region_data_loader_->ClearCallback();
}
void RegionComboboxModel::LoadRegionData(const std::string& country_code,
RegionDataLoader* region_data_loader) {
DCHECK(region_data_loader);
DCHECK(!region_data_loader_);
region_data_loader_ = region_data_loader;
region_data_loader_->LoadRegionData(
country_code,
base::BindRepeating(&RegionComboboxModel::OnRegionDataLoaded,
weak_factory_.GetWeakPtr()));
}
size_t RegionComboboxModel::GetItemCount() const {
// The combobox view needs to always have at least one item. If the regions
// have not been completely loaded yet, we display a single "loading" item.
return std::max(regions_.size(), size_t{1});
}
std::u16string RegionComboboxModel::GetItemAt(size_t index) const {
// This might happen because of the asynchronous nature of the data.
if (index >= regions_.size())
return l10n_util::GetStringUTF16(IDS_AUTOFILL_LOADING_REGIONS);
if (!regions_[index].second.empty())
return base::UTF8ToUTF16(regions_[index].second);
// The separator item. Implemented for platforms that don't yet support
// IsItemSeparatorAt().
return u"---";
}
bool RegionComboboxModel::IsItemSeparatorAt(size_t index) const {
return index < regions_.size() && regions_[index].first.empty();
}
void RegionComboboxModel::OnRegionDataLoaded(
const std::vector<const ::i18n::addressinput::RegionData*>& regions) {
// The RegionDataLoader will eventually self destruct after this call.
DCHECK(region_data_loader_);
region_data_loader_ = nullptr;
regions_.clear();
// Some countries expose a state field but have no region names available.
if (regions.size() > 0) {
failed_to_load_data_ = false;
regions_.emplace_back("", "---");
for (auto* const region : regions) {
regions_.emplace_back(region->key(), region->name());
}
} else {
// TODO(mad): Maybe use a static list as is done for countries in
// components\autofill\core\browser\country_data.cc
failed_to_load_data_ = true;
}
for (auto& observer : observers()) {
observer.OnComboboxModelChanged(this);
}
}
} // namespace autofill
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