chrome/browser/media_galleries/linux/mtp_device_task_helper_map_service.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/media_galleries/linux/mtp_device_task_helper_map_service.h"
   6
   7 #include "base/logging.h"
   8 #include "base/stl_util.h"
   9 #include "chrome/browser/media_galleries/linux/mtp_device_task_helper.h"
  10 #include "content/public/browser/browser_thread.h"
  11
  12 namespace {
  13
  14 base::LazyInstance<MTPDeviceTaskHelperMapService>
  15     g_mtp_device_task_helper_map_service = LAZY_INSTANCE_INITIALIZER;
  16
  17 }  // namespace
  18
  19 // static
  20 MTPDeviceTaskHelperMapService* MTPDeviceTaskHelperMapService::GetInstance() {
  21   return g_mtp_device_task_helper_map_service.Pointer();
  22 }
  23
  24 MTPDeviceTaskHelper* MTPDeviceTaskHelperMapService::CreateDeviceTaskHelper(
  25     const std::string& storage_name) {
  26   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  27   DCHECK(!storage_name.empty());
  28   DCHECK(!ContainsKey(task_helper_map_, storage_name));
  29   MTPDeviceTaskHelper* task_helper = new MTPDeviceTaskHelper();
  30   task_helper_map_[storage_name] = task_helper;
  31   return task_helper;
  32 }
  33
  34 void MTPDeviceTaskHelperMapService::DestroyDeviceTaskHelper(
  35     const std::string& storage_name) {
  36   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  37   TaskHelperMap::iterator it = task_helper_map_.find(storage_name);
  38   if (it == task_helper_map_.end())
  39     return;
  40   delete it->second;
  41   task_helper_map_.erase(it);
  42 }
  43
  44 MTPDeviceTaskHelper* MTPDeviceTaskHelperMapService::GetDeviceTaskHelper(
  45     const std::string& storage_name) {
  46   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  47   DCHECK(!storage_name.empty());
  48   TaskHelperMap::const_iterator it = task_helper_map_.find(storage_name);
  49   return (it != task_helper_map_.end()) ? it->second : NULL;
  50 }
  51
  52 MTPDeviceTaskHelperMapService::MTPDeviceTaskHelperMapService() {
  53 }
  54
  55 MTPDeviceTaskHelperMapService::~MTPDeviceTaskHelperMapService() {
  56 }