Home | History | Annotate | Download | only in extensions 
      1 // Copyright (c) 2011 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 #ifndef CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_BROWSER_EVENT_ROUTER_H_
      6 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_BROWSER_EVENT_ROUTER_H_
      7 #pragma once
      8 
      9 #include <string>
     10 #include <map>
     11 
     12 #include "base/memory/linked_ptr.h"
     13 #include "base/string16.h"
     14 #include "chrome/browser/chromeos/cros/mount_library.h"
     15 
     16 class Profile;
     17 
     18 namespace chromeos {
     19 class SystemNotification;
     20 }
     21 
     22 // Used to monitor disk mount changes and signal when new mounted usb device is
     23 // found.
     24 class ExtensionFileBrowserEventRouter
     25     : public chromeos::MountLibrary::Observer {
     26  public:
     27   static ExtensionFileBrowserEventRouter* GetInstance();
     28 
     29   // Starts/stops observing file system change events. Currently only
     30   // MountLibrary events are being observed.
     31   void ObserveFileSystemEvents(Profile* profile);
     32   void StopObservingFileSystemEvents();
     33 
     34   // MountLibrary::Observer overrides.
     35   virtual void DiskChanged(chromeos::MountLibraryEventType event,
     36                            const chromeos::MountLibrary::Disk* disk);
     37   virtual void DeviceChanged(chromeos::MountLibraryEventType event,
     38                              const std::string& device_path);
     39 
     40  private:
     41   friend struct DefaultSingletonTraits<ExtensionFileBrowserEventRouter>;
     42   typedef std::map<std::string, linked_ptr<chromeos::SystemNotification> >
     43       NotificationMap;
     44   typedef std::map<std::string, std::string> MountPointMap;
     45 
     46   ExtensionFileBrowserEventRouter();
     47   virtual ~ExtensionFileBrowserEventRouter();
     48 
     49   // USB mount event handlers.
     50   void OnDiskAdded(const chromeos::MountLibrary::Disk* disk);
     51   void OnDiskRemoved(const chromeos::MountLibrary::Disk* disk);
     52   void OnDiskChanged(const chromeos::MountLibrary::Disk* disk);
     53   void OnDeviceAdded(const std::string& device_path);
     54   void OnDeviceRemoved(const std::string& device_path);
     55   void OnDeviceScanned(const std::string& device_path);
     56 
     57   // Finds first notifications corresponding to the same device. Ensures that
     58   // we don't pop up multiple notifications for the same device.
     59   NotificationMap::iterator FindNotificationForPath(const std::string& path);
     60 
     61   // Sends filesystem changed extension message to all renderers.
     62   void DispatchEvent(const chromeos::MountLibrary::Disk* disk, bool added);
     63 
     64   void RemoveBrowserFromVector(const std::string& path);
     65 
     66   // Used to create a window of a standard size, and add it to a list
     67   // of tracked browser windows in case that device goes away.
     68   void OpenFileBrowse(const std::string& url,
     69                       const std::string& device_path,
     70                       bool small);
     71 
     72   // Show/hide desktop notifications.
     73   void ShowDeviceNotification(const std::string& system_path,
     74                               int icon_resource_id,
     75                               const string16& message);
     76   void HideDeviceNotification(const std::string& system_path);
     77 
     78   MountPointMap mounted_devices_;
     79   NotificationMap notifications_;
     80   Profile* profile_;
     81 
     82   DISALLOW_COPY_AND_ASSIGN(ExtensionFileBrowserEventRouter);
     83 };
     84 
     85 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_BROWSER_EVENT_ROUTER_H_
     86