Drive: Mount/Unmount GoogleDrive on Files App when the file system is mounted/unmounted.

chrome/browser/chromeos/extensions/file_browser_event_router.cc

 // Copyright (c) 2012 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/extensions/file_browser_event_router.h"
 
 #include "base/bind.h"
 #include "base/json/json_writer.h"
 #include "base/message_loop.h"
 #include "base/stl_util.h"
@@ skipping 208 matching lines @@
   if (iter == file_watchers_.end())
     return;
   // Remove the renderer process for this watch.
   iter->second->RemoveExtension(extension_id);
   if (iter->second->GetRefCount() == 0) {
     delete iter->second;
     file_watchers_.erase(iter);
   }
 }
 
+void FileBrowserEventRouter::MountDrive(
+    const base::Closure& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  gdata::GDataSystemService* system_service =
+      gdata::GDataSystemServiceFactory::GetForProfile(profile_);
+  if (system_service) {
+    system_service->docs_service()->Authenticate(
+        base::Bind(&FileBrowserEventRouter::OnAuthenticated,
+                   this,
+                   callback));
+  }
+}
+
+void FileBrowserEventRouter::OnAuthenticated(
+    const base::Closure& callback,
+    gdata::GDataErrorCode error,
+    const std::string& token) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  chromeos::MountError error_code;
+  // For the file manager to work offline, GDATA_NO_CONNECTION is allowed.
+  if (error == gdata::HTTP_SUCCESS || error == gdata::GDATA_NO_CONNECTION)
+    error_code = chromeos::MOUNT_ERROR_NONE;
+  else
+    error_code = chromeos::MOUNT_ERROR_NOT_AUTHENTICATED;
+
+  // Pass back the gdata mount point path as source path.
+  const std::string& gdata_path = gdata::util::GetGDataMountPointPathAsString();
+  DiskMountManager::MountPointInfo mount_info(
+      gdata_path,
+      gdata_path,
+      chromeos::MOUNT_TYPE_GDATA,
+      chromeos::disks::MOUNT_CONDITION_NONE);
+
+  // Raise mount event.
+  MountCompleted(DiskMountManager::MOUNTING, error_code, mount_info);
+
+  if (!callback.is_null())
+    callback.Run();
+}
+
 void FileBrowserEventRouter::HandleRemoteUpdateRequestOnUIThread(bool start) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   gdata::GDataFileSystemInterface* file_system = GetRemoteFileSystem();
   DCHECK(file_system);
 
   if (start) {
     file_system->CheckForUpdates();
     if (num_remote_update_requests_ == 0)
       file_system->StartUpdates();
@@ skipping 170 matching lines @@
   args.Append(base::Value::CreateIntegerValue(num_accumulated_entries));
   std::string args_json;
   base::JSONWriter::Write(&args, &args_json);
 
   profile_->GetExtensionEventRouter()->DispatchEventToExtension(
       std::string(kFileBrowserDomain),
       extensions::event_names::kOnDocumentFeedFetched, args_json,
       NULL, GURL());
 }
 
+void FileBrowserEventRouter::OnFileSystemMounted() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  MountDrive(base::Bind(&base::DoNothing));  // Callback does nothing.
+}
+
+void FileBrowserEventRouter::OnFileSystemUnmounting() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  // Raise a MountCompleted event to notify the File Manager.
+  const std::string& gdata_path = gdata::util::GetGDataMountPointPathAsString();
+  DiskMountManager::MountPointInfo mount_info(
+      gdata_path,
+      gdata_path,
+      chromeos::MOUNT_TYPE_GDATA,
+      chromeos::disks::MOUNT_CONDITION_NONE);
+  MountCompleted(DiskMountManager::UNMOUNTING, chromeos::MOUNT_ERROR_NONE,
+                 mount_info);
+}
+
 void FileBrowserEventRouter::OnAuthenticationFailed() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   // Raise a MountCompleted event to notify the File Manager.
   const std::string& gdata_path = gdata::util::GetGDataMountPointPathAsString();
   DiskMountManager::MountPointInfo mount_info(
       gdata_path,
       gdata_path,
       chromeos::MOUNT_TYPE_GDATA,
       chromeos::disks::MOUNT_CONDITION_NONE);
@@ skipping 383 matching lines @@
   return scoped_refptr<RefcountedProfileKeyedService>(
       new FileBrowserEventRouter(profile));
 }
 
 bool FileBrowserEventRouterFactory::ServiceHasOwnInstanceInIncognito() {
   // Explicitly and always allow this router in guest login mode.   see
   // chrome/browser/profiles/profile_keyed_base_factory.h comment
   // for the details.
   return true;
 }