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