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// Copyright 2017 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_REGION_COMBOBOX_MODEL_H_
#define COMPONENTS_AUTOFILL_CORE_BROWSER_REGION_COMBOBOX_MODEL_H_
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "base/macros.h"
#include "base/observer_list.h"
#include "third_party/libaddressinput/src/cpp/include/libaddressinput/preload_supplier.h"
#include "third_party/libaddressinput/src/cpp/include/libaddressinput/source.h"
#include "third_party/libaddressinput/src/cpp/include/libaddressinput/storage.h"
#include "ui/base/models/combobox_model.h"
namespace autofill {
// A model for country regions (aka state/provinces) to be used to enter
// addresses. Note that loading these regions can happen asynchronously so a
// ui::ComboboxModelObserver should be attached to this model to be updated when
// the regions load is completed.
class RegionComboboxModel : public ui::ComboboxModel {
public:
// |source| and |storage| are needed to initialize the
// ::i18n::addressinput::PreloadSupplier, |app_locale| is needed for
// ::i18n::addressinput::RegionDataBuilder and |country_code| identifies which
// country's region to load into the model.
RegionComboboxModel(
std::unique_ptr<const ::i18n::addressinput::Source> source,
std::unique_ptr<::i18n::addressinput::Storage> storage,
const std::string& app_locale,
const std::string& country_code);
~RegionComboboxModel() override;
bool pending_region_data_load() const { return pending_region_data_load_; }
bool failed_to_load_data() const { return failed_to_load_data_; }
// ui::ComboboxModel implementation:
int GetItemCount() const override;
base::string16 GetItemAt(int index) override;
bool IsItemSeparatorAt(int index) override;
void AddObserver(ui::ComboboxModelObserver* observer) override;
void RemoveObserver(ui::ComboboxModelObserver* observer) override;
// To allow testing failure states.
void SetFailureModeForTests(bool failed_to_load_data);
private:
// Start the potentially asynchronous process of loading region data.
void LoadRegionData(const std::string& country_code);
// Callback for ::i18n::addressinput::PreloadSupplier::LoadRules
void RegionDataLoaded(bool success, const std::string&, int rule_count);
// Whether the region data load failed or not.
bool failed_to_load_data_;
// Set to true during region data load, and false otherwise. Whether the load
// succeeded or not doesn't affect this value.
bool pending_region_data_load_;
// The application locale.
const std::string app_locale_;
// The callback to give to |region_data_supplier_| for async operations.
::i18n::addressinput::scoped_ptr<
::i18n::addressinput::PreloadSupplier::Callback>
region_data_supplier_callback_;
// A supplier of region data.
::i18n::addressinput::PreloadSupplier region_data_supplier_;
// List of <code, name> pairs for ADDRESS_HOME_STATE combobox values;
std::vector<std::pair<std::string, std::string>> regions_;
// To be called when the data for the given country code was loaded.
base::ObserverList<ui::ComboboxModelObserver> observers_;
DISALLOW_COPY_AND_ASSIGN(RegionComboboxModel);
};
} // namespace autofill
#endif // COMPONENTS_AUTOFILL_CORE_BROWSER_REGION_COMBOBOX_MODEL_H_
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