chrome/browser/chromeos/printing/external_printers_factory.cc

// 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.

#include "chrome/browser/chromeos/printing/external_printers_factory.h"

#include <memory>

#include "base/lazy_instance.h"
#include "chrome/browser/chromeos/printing/external_printers.h"
#include "chrome/browser/chromeos/profiles/profile_helper.h"
#include "chrome/browser/profiles/profile.h"
#include "components/user_manager/user.h"

namespace chromeos {

namespace {

base::LazyInstance<ExternalPrintersFactory>::DestructorAtExit
    g_printers_factory = LAZY_INSTANCE_INITIALIZER;

}  // namespace

// static
ExternalPrintersFactory* ExternalPrintersFactory::Get() {
  return g_printers_factory.Pointer();
}

base::WeakPtr<ExternalPrinters> ExternalPrintersFactory::GetForAccountId(
    const AccountId& account_id) {
  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
  auto found = printers_by_user_.find(account_id);
  if (found != printers_by_user_.end()) {
    return found->second->AsWeakPtr();
  }

  printers_by_user_[account_id] = ExternalPrinters::Create();
  return printers_by_user_[account_id]->AsWeakPtr();
}

base::WeakPtr<ExternalPrinters> ExternalPrintersFactory::GetForProfile(
    Profile* profile) {
  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
  const user_manager::User* user =
      ProfileHelper::Get()->GetUserByProfile(profile);
  if (!user)
    return nullptr;

  return GetForAccountId(user->GetAccountId());
}

void ExternalPrintersFactory::RemoveForUserId(const AccountId& account_id) {
  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
  printers_by_user_.erase(account_id);
}

void ExternalPrintersFactory::Shutdown() {
  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
  printers_by_user_.clear();
}

ExternalPrintersFactory::ExternalPrintersFactory() = default;
ExternalPrintersFactory::~ExternalPrintersFactory() = default;

}  // namespace chromeos