chrome/browser/media_galleries/fileapi/safe_itunes_pref_parser_win.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/fileapi/safe_itunes_pref_parser_win.h"
   6
   7 #include "base/single_thread_task_runner.h"
   8 #include "base/thread_task_runner_handle.h"
   9 #include "chrome/common/extensions/chrome_utility_extensions_messages.h"
  10 #include "chrome/grit/generated_resources.h"
  11 #include "content/public/browser/browser_thread.h"
  12 #include "content/public/browser/utility_process_host.h"
  13 #include "ui/base/l10n/l10n_util.h"
  14
  15 using content::BrowserThread;
  16 using content::UtilityProcessHost;
  17
  18 namespace itunes {
  19
  20 SafeITunesPrefParserWin::SafeITunesPrefParserWin(
  21     const std::string& unsafe_xml,
  22     const ParserCallback& callback)
  23     : unsafe_xml_(unsafe_xml),
  24       callback_(callback),
  25       parser_state_(INITIAL_STATE) {
  26   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
  27   DCHECK(!callback_.is_null());
  28 }
  29
  30 void SafeITunesPrefParserWin::Start() {
  31   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
  32   BrowserThread::PostTask(
  33       BrowserThread::IO,
  34       FROM_HERE,
  35       base::Bind(&SafeITunesPrefParserWin::StartWorkOnIOThread, this));
  36 }
  37
  38 SafeITunesPrefParserWin::~SafeITunesPrefParserWin() {
  39 }
  40
  41 void SafeITunesPrefParserWin::StartWorkOnIOThread() {
  42   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  43   DCHECK_EQ(INITIAL_STATE, parser_state_);
  44
  45   UtilityProcessHost* host =
  46       UtilityProcessHost::Create(this, base::ThreadTaskRunnerHandle::Get());
  47   host->SetName(l10n_util::GetStringUTF16(
  48       IDS_UTILITY_PROCESS_MEDIA_LIBRARY_FILE_CHECKER_NAME));
  49   host->Send(new ChromeUtilityMsg_ParseITunesPrefXml(unsafe_xml_));
  50   parser_state_ = STARTED_PARSING_STATE;
  51 }
  52
  53 void SafeITunesPrefParserWin::OnGotITunesDirectory(
  54     const base::FilePath& library_file) {
  55   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  56
  57   if (parser_state_ != STARTED_PARSING_STATE)
  58     return;
  59   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
  60                           base::Bind(callback_, library_file));
  61   parser_state_ = FINISHED_PARSING_STATE;
  62 }
  63
  64 void SafeITunesPrefParserWin::OnProcessCrashed(int exit_code) {
  65   OnGotITunesDirectory(base::FilePath());
  66 }
  67
  68 bool SafeITunesPrefParserWin::OnMessageReceived(
  69     const IPC::Message& message) {
  70   bool handled = true;
  71   IPC_BEGIN_MESSAGE_MAP(SafeITunesPrefParserWin, message)
  72     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_GotITunesDirectory,
  73                         OnGotITunesDirectory)
  74     IPC_MESSAGE_UNHANDLED(handled = false)
  75   IPC_END_MESSAGE_MAP()
  76   return handled;
  77 }
  78
  79 }  // namespace itunes