Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 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 | |
Ben Murdoch | 2385ea3 | 2013-08-06 11:01:04 +0100 | [diff] [blame] | 5 | #include "chrome/browser/chromeos/extensions/file_manager/file_watcher.h" |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 6 | |
| 7 | #include "base/bind.h" |
| 8 | #include "base/message_loop/message_loop_proxy.h" |
| 9 | #include "chrome/browser/google_apis/task_util.h" |
| 10 | #include "content/public/browser/browser_thread.h" |
| 11 | |
| 12 | using content::BrowserThread; |
| 13 | |
Torne (Richard Coles) | a36e592 | 2013-08-05 13:57:33 +0100 | [diff] [blame] | 14 | namespace file_manager { |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 15 | namespace { |
| 16 | |
| 17 | // Creates a base::FilePathWatcher and starts watching at |watch_path| with |
| 18 | // |callback|. Returns NULL on failure. |
| 19 | base::FilePathWatcher* CreateAndStartFilePathWatcher( |
| 20 | const base::FilePath& watch_path, |
| 21 | const base::FilePathWatcher::Callback& callback) { |
| 22 | DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE)); |
| 23 | DCHECK(!callback.is_null()); |
| 24 | |
| 25 | scoped_ptr<base::FilePathWatcher> watcher(new base::FilePathWatcher); |
| 26 | if (!watcher->Watch(watch_path, false /* recursive */, callback)) |
| 27 | return NULL; |
| 28 | |
| 29 | return watcher.release(); |
| 30 | } |
| 31 | |
| 32 | } // namespace |
| 33 | |
Ben Murdoch | bb1529c | 2013-08-08 10:24:53 +0100 | [diff] [blame^] | 34 | FileWatcher::FileWatcher(const base::FilePath& virtual_path) |
Ben Murdoch | 2385ea3 | 2013-08-06 11:01:04 +0100 | [diff] [blame] | 35 | : local_file_watcher_(NULL), |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 36 | virtual_path_(virtual_path), |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 37 | weak_ptr_factory_(this) { |
| 38 | DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 39 | } |
| 40 | |
Ben Murdoch | 2385ea3 | 2013-08-06 11:01:04 +0100 | [diff] [blame] | 41 | FileWatcher::~FileWatcher() { |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 42 | DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| 43 | |
Ben Murdoch | 2385ea3 | 2013-08-06 11:01:04 +0100 | [diff] [blame] | 44 | BrowserThread::DeleteSoon(BrowserThread::FILE, |
| 45 | FROM_HERE, |
| 46 | local_file_watcher_); |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 47 | } |
| 48 | |
Ben Murdoch | 2385ea3 | 2013-08-06 11:01:04 +0100 | [diff] [blame] | 49 | void FileWatcher::AddExtension(const std::string& extension_id) { |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 50 | DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| 51 | |
| 52 | extensions_[extension_id]++; |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 53 | } |
| 54 | |
Ben Murdoch | 2385ea3 | 2013-08-06 11:01:04 +0100 | [diff] [blame] | 55 | void FileWatcher::RemoveExtension(const std::string& extension_id) { |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 56 | DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| 57 | |
Ben Murdoch | bb1529c | 2013-08-08 10:24:53 +0100 | [diff] [blame^] | 58 | ExtensionCountMap::iterator it = extensions_.find(extension_id); |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 59 | if (it == extensions_.end()) { |
| 60 | LOG(ERROR) << " Extension [" << extension_id |
Ben Murdoch | bb1529c | 2013-08-08 10:24:53 +0100 | [diff] [blame^] | 61 | << "] tries to unsubscribe from folder [" |
| 62 | << virtual_path_.value() |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 63 | << "] it isn't subscribed"; |
| 64 | return; |
| 65 | } |
| 66 | |
| 67 | // If entry found - decrease it's count and remove if necessary |
Ben Murdoch | bb1529c | 2013-08-08 10:24:53 +0100 | [diff] [blame^] | 68 | --it->second; |
| 69 | if (it->second == 0) |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 70 | extensions_.erase(it); |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 71 | } |
| 72 | |
Ben Murdoch | bb1529c | 2013-08-08 10:24:53 +0100 | [diff] [blame^] | 73 | std::vector<std::string> FileWatcher::GetExtensionIds() const { |
| 74 | std::vector<std::string> extension_ids; |
| 75 | for (ExtensionCountMap::const_iterator iter = extensions_.begin(); |
| 76 | iter != extensions_.end(); ++iter) { |
| 77 | extension_ids.push_back(iter->first); |
| 78 | } |
| 79 | return extension_ids; |
| 80 | } |
| 81 | |
| 82 | void FileWatcher::WatchLocalFile( |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 83 | const base::FilePath& local_path, |
| 84 | const base::FilePathWatcher::Callback& file_watcher_callback, |
| 85 | const BoolCallback& callback) { |
| 86 | DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| 87 | DCHECK(!callback.is_null()); |
Ben Murdoch | 2385ea3 | 2013-08-06 11:01:04 +0100 | [diff] [blame] | 88 | DCHECK(!local_file_watcher_); |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 89 | |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 90 | BrowserThread::PostTaskAndReplyWithResult( |
| 91 | BrowserThread::FILE, |
| 92 | FROM_HERE, |
| 93 | base::Bind(&CreateAndStartFilePathWatcher, |
| 94 | local_path, |
| 95 | google_apis::CreateRelayCallback(file_watcher_callback)), |
Ben Murdoch | 2385ea3 | 2013-08-06 11:01:04 +0100 | [diff] [blame] | 96 | base::Bind(&FileWatcher::OnWatcherStarted, |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 97 | weak_ptr_factory_.GetWeakPtr(), |
| 98 | callback)); |
| 99 | } |
| 100 | |
Ben Murdoch | 2385ea3 | 2013-08-06 11:01:04 +0100 | [diff] [blame] | 101 | void FileWatcher::OnWatcherStarted( |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 102 | const BoolCallback& callback, |
| 103 | base::FilePathWatcher* file_watcher) { |
| 104 | DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| 105 | DCHECK(!callback.is_null()); |
Ben Murdoch | 2385ea3 | 2013-08-06 11:01:04 +0100 | [diff] [blame] | 106 | DCHECK(!local_file_watcher_); |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 107 | |
| 108 | if (file_watcher) { |
Ben Murdoch | 2385ea3 | 2013-08-06 11:01:04 +0100 | [diff] [blame] | 109 | local_file_watcher_ = file_watcher; |
Ben Murdoch | 7dbb3d5 | 2013-07-17 14:55:54 +0100 | [diff] [blame] | 110 | callback.Run(true); |
| 111 | } else { |
| 112 | callback.Run(false); |
| 113 | } |
| 114 | } |
Torne (Richard Coles) | a36e592 | 2013-08-05 13:57:33 +0100 | [diff] [blame] | 115 | |
| 116 | } // namespace file_manager |