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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/cros/mount_library.h"
#include "base/message_loop.h"
#include "base/string_util.h"
#include "chrome/browser/browser_thread.h"
#include "chrome/browser/chromeos/cros/cros_library.h"
namespace chromeos {
class MountLibraryImpl : public MountLibrary {
public:
MountLibraryImpl() : mount_status_connection_(NULL) {
if (CrosLibrary::Get()->EnsureLoaded()) {
Init();
} else {
LOG(ERROR) << "Cros Library has not been loaded";
}
}
~MountLibraryImpl() {
if (mount_status_connection_) {
DisconnectMountStatus(mount_status_connection_);
}
}
void AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
bool MountPath(const char* device_path) {
return MountDevicePath(device_path);
}
const DiskVector& disks() const { return disks_; }
private:
void ParseDisks(const MountStatus& status) {
disks_.clear();
for (int i = 0; i < status.size; i++) {
std::string path;
std::string mountpath;
std::string systempath;
bool parent;
bool hasmedia;
if (status.disks[i].path != NULL) {
path = status.disks[i].path;
}
if (status.disks[i].mountpath != NULL) {
mountpath = status.disks[i].mountpath;
}
if (status.disks[i].systempath != NULL) {
systempath = status.disks[i].systempath;
}
parent = status.disks[i].isparent;
hasmedia = status.disks[i].hasmedia;
disks_.push_back(Disk(path,
mountpath,
systempath,
parent,
hasmedia));
}
}
static void MountStatusChangedHandler(void* object,
const MountStatus& status,
MountEventType evt,
const char* path) {
MountLibraryImpl* mount = static_cast<MountLibraryImpl*>(object);
std::string devicepath = path;
mount->ParseDisks(status);
mount->UpdateMountStatus(status, evt, devicepath);
}
void Init() {
// Getting the monitor status so that the daemon starts up.
MountStatus* mount = RetrieveMountInformation();
if (!mount) {
LOG(ERROR) << "Failed to retrieve mount information";
return;
}
ParseDisks(*mount);
FreeMountStatus(mount);
mount_status_connection_ = MonitorMountStatus(
&MountStatusChangedHandler, this);
}
void UpdateMountStatus(const MountStatus& status,
MountEventType evt,
const std::string& path) {
// Make sure we run on UI thread.
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
FOR_EACH_OBSERVER(
Observer, observers_, MountChanged(this, evt, path));
}
ObserverList<Observer> observers_;
// A reference to the mount api, to allow callbacks when the mount
// status changes.
MountStatusConnection mount_status_connection_;
// The list of disks found.
DiskVector disks_;
DISALLOW_COPY_AND_ASSIGN(MountLibraryImpl);
};
class MountLibraryStubImpl : public MountLibrary {
public:
MountLibraryStubImpl() {}
virtual ~MountLibraryStubImpl() {}
// MountLibrary overrides.
virtual void AddObserver(Observer* observer) {}
virtual void RemoveObserver(Observer* observer) {}
virtual const DiskVector& disks() const { return disks_; }
virtual bool MountPath(const char* device_path) { return false; }
private:
// The list of disks found.
DiskVector disks_;
DISALLOW_COPY_AND_ASSIGN(MountLibraryStubImpl);
};
// static
MountLibrary* MountLibrary::GetImpl(bool stub) {
if (stub)
return new MountLibraryStubImpl();
else
return new MountLibraryImpl();
}
} // namespace chromeos
// Allows InvokeLater without adding refcounting. This class is a Singleton and
// won't be deleted until it's last InvokeLater is run.
DISABLE_RUNNABLE_METHOD_REFCOUNT(chromeos::MountLibraryImpl);
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