1// Copyright (c) 2011 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// Cross platform methods for FilePathWatcher. See the various platform
6// specific implementation files, too.
7
8#include "base/files/file_path_watcher.h"
9
10#include "base/logging.h"
11#include "base/message_loop/message_loop.h"
12
13#if defined(OS_MACOSX) && !defined(OS_IOS)
14#include "base/mac/mac_util.h"
15#endif
16
17namespace base {
18
19FilePathWatcher::~FilePathWatcher() {
20  impl_->Cancel();
21}
22
23// static
24void FilePathWatcher::CancelWatch(
25    const scoped_refptr<PlatformDelegate>& delegate) {
26  delegate->CancelOnMessageLoopThread();
27}
28
29// static
30bool FilePathWatcher::RecursiveWatchAvailable() {
31#if defined(OS_MACOSX) && !defined(OS_IOS)
32  // FSEvents isn't available on iOS and is broken on OSX 10.6 and earlier.
33  // See http://crbug.com/54822#c31
34  return mac::IsOSLionOrLater();
35#elif defined(OS_WIN) || defined(OS_LINUX)
36  return true;
37#else
38  return false;
39#endif
40}
41
42FilePathWatcher::PlatformDelegate::PlatformDelegate(): cancelled_(false) {
43}
44
45FilePathWatcher::PlatformDelegate::~PlatformDelegate() {
46  DCHECK(is_cancelled());
47}
48
49bool FilePathWatcher::Watch(const FilePath& path,
50                            bool recursive,
51                            const Callback& callback) {
52  DCHECK(path.IsAbsolute());
53  return impl_->Watch(path, recursive, callback);
54}
55
56}  // namespace base
57