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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_GEO_SUBKEY_REQUESTER_H_
#define COMPONENTS_AUTOFILL_CORE_BROWSER_GEO_SUBKEY_REQUESTER_H_
#include "base/callback.h"
#include "base/macros.h"
#include "third_party/libaddressinput/chromium/chrome_address_validator.h"
namespace autofill {
// This receives a region code and the device's language.
using SubKeyReceiverCallback =
base::OnceCallback<void(const std::vector<std::string>&,
const std::vector<std::string>&)>;
// SubKeyRequester Loads Rules from the server and extracts the subkeys.
// For a given key (region code for a country, such as US), the list of its
// corresponding subkeys is the list of that countries admin areas (states,
// provinces, ..).
class SubKeyRequester : public LoadRulesListener {
public:
// The interface for the subkey request.
class Request {
public:
virtual void OnRulesLoaded() = 0;
virtual ~Request() {}
};
SubKeyRequester(std::unique_ptr<::i18n::addressinput::Source> source,
std::unique_ptr<::i18n::addressinput::Storage> storage);
~SubKeyRequester() override;
// If the rules for |region_code| are loaded, this gets the subkeys for the
// |region_code|, synchronously. If they are not loaded yet, it sets up a
// task to get the subkeys when the rules are loaded (asynchronous). If the
// loading has not yet started, it will also start loading the rules for the
// |region_code|. The received subkeys will be returned to the |requester|. If
// the subkeys are not received in |timeout_seconds|, then the requester will
// be informed and the request will be canceled. |requester| should never be
// null. The requesting device language is set to |language|, ex:"fr".
void StartRegionSubKeysRequest(const std::string& region_code,
const std::string& language,
int timeout_seconds,
SubKeyReceiverCallback cb);
// Returns whether the rules for the specified |region_code| have finished
// loading.
bool AreRulesLoadedForRegion(const std::string& region_code);
// Start loading the rules for the specified |region_code|.
virtual void LoadRulesForRegion(const std::string& region_code);
// Cancels the pending subkey request task.
void CancelPendingGetSubKeys();
private:
// Called when the address rules for the |region_code| have finished
// loading. Implementation of the LoadRulesListener interface.
void OnAddressValidationRulesLoaded(const std::string& region_code,
bool success) override;
// The region code and the request for the pending subkey request.
std::unique_ptr<Request> pending_subkey_request_;
std::string pending_subkey_region_code_;
// The address validator used to load subkeys.
AddressValidator address_validator_;
DISALLOW_COPY_AND_ASSIGN(SubKeyRequester);
};
} // namespace autofill
#endif // COMPONENTS_AUTOFILL_CORE_BROWSER_GEO_SUBKEY_REQUESTER_H_
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