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| 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/chromeos/extensions/file_manager/file_watcher_extension
s.h" | |
| 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 | |
| 14 namespace file_manager { | |
| 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 | |
| 34 FileWatcherExtensions::FileWatcherExtensions(const base::FilePath& virtual_path, | |
| 35 const std::string& extension_id, | |
| 36 bool is_remote_file_system) | |
| 37 : file_watcher_(NULL), | |
| 38 virtual_path_(virtual_path), | |
| 39 ref_count_(0), | |
| 40 is_remote_file_system_(is_remote_file_system), | |
| 41 weak_ptr_factory_(this) { | |
| 42 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 43 | |
| 44 AddExtension(extension_id); | |
| 45 } | |
| 46 | |
| 47 FileWatcherExtensions::~FileWatcherExtensions() { | |
| 48 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 49 | |
| 50 BrowserThread::DeleteSoon(BrowserThread::FILE, FROM_HERE, file_watcher_); | |
| 51 } | |
| 52 | |
| 53 void FileWatcherExtensions::AddExtension(const std::string& extension_id) { | |
| 54 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 55 | |
| 56 extensions_[extension_id]++; | |
| 57 ref_count_++; | |
| 58 } | |
| 59 | |
| 60 void FileWatcherExtensions::RemoveExtension(const std::string& extension_id) { | |
| 61 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 62 | |
| 63 ExtensionUsageRegistry::iterator it = extensions_.find(extension_id); | |
| 64 if (it == extensions_.end()) { | |
| 65 LOG(ERROR) << " Extension [" << extension_id | |
| 66 << "] tries to unsubscribe from folder [" << local_path_.value() | |
| 67 << "] it isn't subscribed"; | |
| 68 return; | |
| 69 } | |
| 70 | |
| 71 // If entry found - decrease it's count and remove if necessary | |
| 72 if (it->second-- == 0) | |
| 73 extensions_.erase(it); | |
| 74 | |
| 75 ref_count_--; | |
| 76 } | |
| 77 | |
| 78 void FileWatcherExtensions::Watch( | |
| 79 const base::FilePath& local_path, | |
| 80 const base::FilePathWatcher::Callback& file_watcher_callback, | |
| 81 const BoolCallback& callback) { | |
| 82 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 83 DCHECK(!callback.is_null()); | |
| 84 DCHECK(!file_watcher_); | |
| 85 | |
| 86 local_path_ = local_path; // For error message in RemoveExtension(). | |
| 87 | |
| 88 if (is_remote_file_system_) { | |
| 89 base::MessageLoopProxy::current()->PostTask(FROM_HERE, | |
| 90 base::Bind(callback, true)); | |
| 91 return; | |
| 92 } | |
| 93 | |
| 94 BrowserThread::PostTaskAndReplyWithResult( | |
| 95 BrowserThread::FILE, | |
| 96 FROM_HERE, | |
| 97 base::Bind(&CreateAndStartFilePathWatcher, | |
| 98 local_path, | |
| 99 google_apis::CreateRelayCallback(file_watcher_callback)), | |
| 100 base::Bind(&FileWatcherExtensions::OnWatcherStarted, | |
| 101 weak_ptr_factory_.GetWeakPtr(), | |
| 102 callback)); | |
| 103 } | |
| 104 | |
| 105 void FileWatcherExtensions::OnWatcherStarted( | |
| 106 const BoolCallback& callback, | |
| 107 base::FilePathWatcher* file_watcher) { | |
| 108 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 109 DCHECK(!callback.is_null()); | |
| 110 DCHECK(!file_watcher_); | |
| 111 | |
| 112 if (file_watcher) { | |
| 113 file_watcher_ = file_watcher; | |
| 114 callback.Run(true); | |
| 115 } else { | |
| 116 callback.Run(false); | |
| 117 } | |
| 118 } | |
| 119 | |
| 120 } // namespace file_manager | |
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Chromium Code Reviews
Issue 22259008:
file_manager: Rename file_watcher_extensions.h to file_watcher.h (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src