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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/chromeos/mount_library.h"
#include "base/message_loop.h"
#include "base/string_util.h"
#include "chrome/browser/chrome_thread.h"
#include "chrome/browser/chromeos/cros_library.h"
// Allows InvokeLater without adding refcounting. This class is a Singleton and
// won't be deleted until it's last InvokeLater is run.
template <>
struct RunnableMethodTraits<chromeos::MountLibrary> {
void RetainCallee(chromeos::MountLibrary* obj) {}
void ReleaseCallee(chromeos::MountLibrary* obj) {}
};
namespace chromeos {
// static
MountLibrary* MountLibrary::Get() {
return Singleton<MountLibrary>::get();
}
// static
bool MountLibrary::loaded() {
return CrosLibrary::loaded();
}
void MountLibrary::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void MountLibrary::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
void MountLibrary::ParseDisks(const MountStatus& status) {
disks_.clear();
for (int i = 0; i < status.size; i++) {
std::string path;
std::string mountpath;
if (status.disks[i].path != NULL) {
path = status.disks[i].path;
}
if (status.disks[i].mountpath != NULL) {
mountpath = status.disks[i].mountpath;
}
disks_.push_back(Disk(path, mountpath));
}
}
MountLibrary::MountLibrary() {
if (CrosLibrary::loaded()) {
Init();
} else {
LOG(ERROR) << "Cros Library has not been loaded";
}
}
MountLibrary::~MountLibrary() {
if (CrosLibrary::loaded()) {
DisconnectMountStatus(mount_status_connection_);
}
}
// static
void MountLibrary::MountStatusChangedHandler(void* object,
const MountStatus& status,
MountEventType evt,
const char* path) {
MountLibrary* mount = static_cast<MountLibrary*>(object);
std::string devicepath = path;
mount->ParseDisks(status);
mount->UpdateMountStatus(status, evt, devicepath);
}
void MountLibrary::Init() {
// Getting the monitor status so that the daemon starts up.
MountStatus* mount = RetrieveMountInformation();
FreeMountStatus(mount);
mount_status_connection_ = MonitorMountStatus(
&MountStatusChangedHandler, this);
}
void MountLibrary::UpdateMountStatus(const MountStatus& status,
MountEventType evt,
const std::string& path) {
// Make sure we run on UI thread.
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
FOR_EACH_OBSERVER(Observer, observers_, MountChanged(this, evt, path));
}
} // namespace chromeos
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