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      1 // Copyright (c) 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/fileapi/itunes_finder.h"
      6 
      7 #include "base/bind.h"
      8 #include "base/logging.h"
      9 #include "chrome/browser/storage_monitor/storage_info.h"
     10 #include "content/public/browser/browser_thread.h"
     11 
     12 #if defined(OS_WIN)
     13 #include "chrome/browser/media_galleries/fileapi/itunes_finder_win.h"
     14 #elif defined(OS_MACOSX)
     15 #include "chrome/browser/media_galleries/fileapi/itunes_finder_mac.h"
     16 #endif
     17 
     18 namespace itunes {
     19 
     20 ITunesFinder::~ITunesFinder() {}
     21 
     22 // static
     23 void ITunesFinder::FindITunesLibrary(const ITunesFinderCallback& callback) {
     24   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
     25   DCHECK(!callback.is_null());
     26 
     27   ITunesFinder* finder = NULL;
     28 #if defined(OS_WIN)
     29   finder = new ITunesFinderWin(callback);
     30 #elif defined(OS_MACOSX)
     31   finder = new ITunesFinderMac(callback);
     32 #endif
     33   if (finder) {
     34     content::BrowserThread::PostTask(
     35         content::BrowserThread::FILE,
     36         FROM_HERE,
     37         base::Bind(&ITunesFinder::FindITunesLibraryOnFileThread,
     38                    base::Unretained(finder)));
     39   } else {
     40     callback.Run(std::string());
     41   }
     42 }
     43 
     44 ITunesFinder::ITunesFinder(const ITunesFinderCallback& callback)
     45     : callback_(callback) {
     46 }
     47 
     48 void ITunesFinder::PostResultToUIThread(const std::string& unique_id) {
     49   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
     50   // The use of base::Owned() below will cause this class to get deleted either
     51   // when FinishOnUIThread() finishes or if the PostTask() fails.
     52   content::BrowserThread::PostTask(
     53       content::BrowserThread::UI,
     54       FROM_HERE,
     55       base::Bind(&ITunesFinder::FinishOnUIThread,
     56                  base::Owned(this),
     57                  unique_id));
     58 }
     59 
     60 void ITunesFinder::FinishOnUIThread(const std::string& unique_id) const {
     61   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
     62 
     63   std::string device_id;
     64   if (!unique_id.empty()) {
     65     device_id = chrome::StorageInfo::MakeDeviceId(chrome::StorageInfo::ITUNES,
     66                                                   unique_id);
     67   }
     68   callback_.Run(device_id);
     69 }
     70 
     71 }  // namespace itunes
     72