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// Copyright (c) 2011 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/usb_mount_observer.h"
#include "base/command_line.h"
#include "base/json/json_writer.h"
#include "base/singleton.h"
#include "chrome/browser/chromeos/cros/cros_library.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/webui/filebrowse_ui.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/url_constants.h"
#include "content/browser/tab_contents/tab_contents.h"
namespace chromeos {
const char* kFilebrowseURLHash = "chrome://filebrowse#";
const char* kFilebrowseScanning = "scanningdevice";
const int kPopupLeft = 0;
const int kPopupTop = 0;
const int kPopupWidth = 250;
const int kPopupHeight = 300;
// static
USBMountObserver* USBMountObserver::GetInstance() {
return Singleton<USBMountObserver>::get();
}
void USBMountObserver::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK(type == NotificationType::BROWSER_CLOSED);
for (BrowserIterator i = browsers_.begin(); i != browsers_.end();
++i) {
if (Source<Browser>(source).ptr() == i->browser) {
i->browser = NULL;
registrar_.Remove(this,
NotificationType::BROWSER_CLOSED,
source);
return;
}
}
}
void USBMountObserver::OpenFileBrowse(const std::string& url,
const std::string& device_path,
bool small) {
if (!CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableAdvancedFileSystem)) {
return;
}
Browser* browser;
Profile* profile;
browser = BrowserList::GetLastActive();
if (browser == NULL) {
return;
}
profile = browser->profile();
if (small) {
browser = FileBrowseUI::OpenPopup(profile,
url,
FileBrowseUI::kSmallPopupWidth,
FileBrowseUI::kSmallPopupHeight);
} else {
browser = FileBrowseUI::OpenPopup(profile,
url,
FileBrowseUI::kPopupWidth,
FileBrowseUI::kPopupHeight);
}
BrowserIterator iter = FindBrowserForPath(device_path);
if (iter == browsers_.end()) {
registrar_.Add(this,
NotificationType::BROWSER_CLOSED,
Source<Browser>(browser));
BrowserWithPath new_browser;
new_browser.browser = browser;
new_browser.device_path = device_path;
browsers_.push_back(new_browser);
} else {
iter->browser = browser;
}
}
void USBMountObserver::DiskChanged(MountLibraryEventType event,
const MountLibrary::Disk* disk) {
if (event == MOUNT_DISK_ADDED) {
OnDiskAdded(disk);
} else if (event == MOUNT_DISK_REMOVED) {
OnDiskRemoved(disk);
} else if (event == MOUNT_DISK_CHANGED) {
OnDiskChanged(disk);
}
}
void USBMountObserver::DeviceChanged(MountLibraryEventType event,
const std::string& device_path) {
if (event == MOUNT_DEVICE_ADDED) {
OnDeviceAdded(device_path);
}else if (event == MOUNT_DEVICE_REMOVED) {
OnDeviceRemoved(device_path);
} else if (event == MOUNT_DEVICE_SCANNED) {
OnDeviceScanned(device_path);
}
}
void USBMountObserver::FireFileSystemChanged(
const std::string& web_path) {
// TODO(zelidrag): Send message to all extensions that file system has
// changed.
return;
}
void USBMountObserver::OnDiskAdded(const MountLibrary::Disk* disk) {
VLOG(1) << "Disk added: " << disk->device_path();
if (disk->device_path().empty()) {
VLOG(1) << "Empty system path for " << disk->device_path();
return;
}
if (disk->is_parent()) {
if (!disk->has_media())
RemoveBrowserFromVector(disk->system_path());
return;
}
// If disk is not mounted yet, give it a try.
if (disk->mount_path().empty()) {
// Initiate disk mount operation.
chromeos::MountLibrary* lib =
chromeos::CrosLibrary::Get()->GetMountLibrary();
lib->MountPath(disk->device_path().c_str());
}
}
void USBMountObserver::OnDiskRemoved(const MountLibrary::Disk* disk) {
VLOG(1) << "Disk removed: " << disk->device_path();
RemoveBrowserFromVector(disk->system_path());
MountPointMap::iterator iter = mounted_devices_.find(disk->device_path());
if (iter == mounted_devices_.end())
return;
chromeos::MountLibrary* lib =
chromeos::CrosLibrary::Get()->GetMountLibrary();
// TODO(zelidrag): This for some reason does not work as advertized.
// we might need to clean up mount directory on FILE thread here as well.
lib->UnmountPath(disk->device_path().c_str());
FireFileSystemChanged(iter->second);
mounted_devices_.erase(iter);
}
void USBMountObserver::OnDiskChanged(const MountLibrary::Disk* disk) {
VLOG(1) << "Disk changed : " << disk->device_path();
if (!disk->mount_path().empty()) {
// Remember this mount point.
mounted_devices_.insert(
std::pair<std::string, std::string>(disk->device_path(),
disk->mount_path()));
FireFileSystemChanged(disk->mount_path());
// TODO(zelidrag): We should remove old file browser stuff later.
// Doing second search to see if the current disk has already
// been popped up due to its parent device being plugged in.
BrowserIterator iter = FindBrowserForPath(disk->system_path());
if (iter != browsers_.end() && iter->browser) {
std::string url = kFilebrowseURLHash;
url += disk->mount_path();
TabContents* tab = iter->browser->GetSelectedTabContents();
iter->browser->window()->SetBounds(gfx::Rect(
0, 0, FileBrowseUI::kPopupWidth, FileBrowseUI::kPopupHeight));
tab->OpenURL(GURL(url), GURL(), CURRENT_TAB,
PageTransition::LINK);
tab->NavigateToPendingEntry(NavigationController::RELOAD);
iter->device_path = disk->device_path();
iter->mount_path = disk->mount_path();
} else {
OpenFileBrowse(disk->mount_path(), disk->device_path(), false);
}
}
}
void USBMountObserver::OnDeviceAdded(const std::string& device_path) {
VLOG(1) << "Device added : " << device_path;
OpenFileBrowse(kFilebrowseScanning, device_path, true);
}
void USBMountObserver::OnDeviceRemoved(const std::string& system_path) {
// New device is added, initiate disk rescan.
RemoveBrowserFromVector(system_path);
}
void USBMountObserver::OnDeviceScanned(const std::string& device_path) {
VLOG(1) << "Device scanned : " << device_path;
}
USBMountObserver::BrowserIterator USBMountObserver::FindBrowserForPath(
const std::string& path) {
for (BrowserIterator i = browsers_.begin();i != browsers_.end();
++i) {
const std::string& device_path = i->device_path;
// Doing a substring match so that we find if this new one is a subdevice
// of another already inserted device.
if (path.find(device_path) != std::string::npos) {
return i;
}
}
return browsers_.end();
}
void USBMountObserver::RemoveBrowserFromVector(const std::string& system_path) {
BrowserIterator i = FindBrowserForPath(system_path);
std::string mount_path;
if (i != browsers_.end()) {
registrar_.Remove(this,
NotificationType::BROWSER_CLOSED,
Source<Browser>(i->browser));
mount_path = i->mount_path;
browsers_.erase(i);
}
std::vector<Browser*> close_these;
for (BrowserList::const_iterator it = BrowserList::begin();
it != BrowserList::end(); ++it) {
if ((*it)->type() == Browser::TYPE_POPUP) {
if (*it && (*it)->GetTabContentsAt((*it)->selected_index())) {
const GURL& url =
(*it)->GetTabContentsAt((*it)->selected_index())->GetURL();
if (url.SchemeIs(chrome::kChromeUIScheme) &&
url.host() == chrome::kChromeUIFileBrowseHost &&
url.ref().find(mount_path) != std::string::npos &&
!mount_path.empty()) {
close_these.push_back(*it);
}
}
}
}
for (size_t x = 0; x < close_these.size(); x++) {
if (close_these[x]->window()) {
close_these[x]->window()->Close();
}
}
}
} // namespace chromeos
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