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      1 // Copyright 2013 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_MEDIA_GALLERIES_FILEAPI_IPHOTO_DATA_PROVIDER_H_
      6 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_IPHOTO_DATA_PROVIDER_H_
      7 
      8 #include <map>
      9 #include <set>
     10 #include <string>
     11 
     12 #include "base/basictypes.h"
     13 #include "base/callback_forward.h"
     14 #include "base/containers/hash_tables.h"
     15 #include "base/files/file_path.h"
     16 #include "base/files/file_path_watcher.h"
     17 #include "base/memory/weak_ptr.h"
     18 #include "chrome/browser/media_galleries/fileapi/iapps_data_provider.h"
     19 #include "chrome/browser/media_galleries/fileapi/safe_iapps_library_parser.h"
     20 #include "chrome/common/media_galleries/iphoto_library.h"
     21 
     22 namespace iphoto {
     23 
     24 // This class is the holder for iPhoto parsed data. Given a path to the iPhoto
     25 // library XML file it will read it in, parse the data, and provide convenient
     26 // methods to access it.  When the file changes, it will update the data.
     27 // It is not thread safe, but can be run on any thread with IO access.
     28 class IPhotoDataProvider : public iapps::IAppsDataProvider {
     29  public:
     30   explicit IPhotoDataProvider(const base::FilePath& library_path);
     31   virtual ~IPhotoDataProvider();
     32 
     33   // Parse the library xml file.
     34   virtual void DoParseLibrary(const base::FilePath& library_path,
     35                               const ReadyCallback& ready_callback) OVERRIDE;
     36 
     37   virtual std::vector<std::string> GetAlbumNames() const;
     38   virtual std::map<std::string, base::FilePath> GetAlbumContents(
     39       const std::string& album) const;
     40   virtual base::FilePath GetPhotoLocationInAlbum(
     41       const std::string& album,
     42       const std::string& filename) const;
     43 
     44   virtual bool HasOriginals(const std::string& album) const;
     45   virtual std::map<std::string, base::FilePath> GetOriginals(
     46       const std::string& album) const;
     47   virtual base::FilePath GetOriginalPhotoLocation(
     48       const std::string& album,
     49       const std::string& filename) const;
     50 
     51  private:
     52   typedef base::hash_map<std::string, base::FilePath> FileIndex;
     53   // Map from album name to a map of filename to path.
     54   typedef base::hash_map<std::string, FileIndex> DirIndex;
     55 
     56   void OnLibraryParsed(const ReadyCallback& ready_callback,
     57                        bool result,
     58                        const parser::Library& library);
     59 
     60   void BuildIndices(const parser::Library& library);
     61 
     62   // Index for library data as it is presented in the virtual FS.
     63   DirIndex dir_index_;
     64 
     65   // Index for originals data.
     66   DirIndex originals_index_;
     67 
     68   scoped_refptr<iapps::SafeIAppsLibraryParser> xml_parser_;
     69 
     70   base::WeakPtrFactory<IPhotoDataProvider> weak_factory_;
     71 
     72   DISALLOW_COPY_AND_ASSIGN(IPhotoDataProvider);
     73 };
     74 
     75 }  // namespace iphoto
     76 
     77 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_IPHOTO_DATA_PROVIDER_H_
     78