[FileManager] Do drive search incrementally

chrome/browser/chromeos/gdata/gdata_file_system.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 91 matching lines @@
   // In the case of loading the root feed we use |root_feed_changestamp| as its
   // initial changestamp value since it does not come with that info.
   // When done |load_feed_callback| is invoked.
   // |entry_found_callback| is used only when this is invoked while searching
   // for file info, and is used in |load_feed_callback|. If successful, it will
   // try to find the file upon retrieval completion.
   // |should_fetch_multiple_feeds| is true iff don't want to stop feed loading
   // after we retrieve first feed chunk.
   // If invoked as a part of content search, query will be set in
   // |search_query|.
+  // If |feed_to_load| is set, this is feed url that will be used to load feed.
   void LoadFromServer(
       ContentOrigin initial_origin,
       int start_changestamp,
       int root_feed_changestamp,
       bool should_fetch_multiple_feeds,
       const FilePath& search_file_path,
       const std::string& search_query,
+      const GURL& feed_to_load,
       const std::string& directory_resource_id,
       const FindEntryCallback& entry_found_callback,
       const LoadDocumentFeedCallback& feed_load_callback);
 
   // Retrieves account metadata and determines from the last change timestamp
   // if the feed content loading from the server needs to be initiated.
   void ReloadFromServerIfNeeded(
       ContentOrigin initial_origin,
       int local_changestamp,
       const FilePath& search_file_path,
@@ skipping 84 matching lines @@
       GDataFileSystemInterface::Observer* observer) OVERRIDE;
   virtual void StartUpdates() OVERRIDE;
   virtual void StopUpdates() OVERRIDE;
   virtual void NotifyFileSystemMounted() OVERRIDE;
   virtual void NotifyFileSystemToBeUnmounted() OVERRIDE;
   virtual void CheckForUpdates() OVERRIDE;
   virtual void GetEntryInfoByResourceId(
       const std::string& resource_id,
       const GetEntryInfoWithFilePathCallback& callback) OVERRIDE;
   virtual void Search(const std::string& search_query,
+                      const GURL& next_feed,
                       const SearchCallback& callback) OVERRIDE;
   virtual void TransferFileFromRemoteToLocal(
       const FilePath& remote_src_file_path,
       const FilePath& local_dest_file_path,
       const FileOperationCallback& callback) OVERRIDE;
   virtual void TransferFileFromLocalToRemote(
       const FilePath& local_src_file_path,
       const FilePath& remote_dest_file_path,
       const FileOperationCallback& callback) OVERRIDE;
   virtual void OpenFile(const FilePath& file_path,
@@ skipping 582 matching lines @@
   // Called when GDataUploader::UploadUpdatedFile() is completed for
   // UpdateFileByResourceId().
   void OnUpdatedFileUploaded(
     const FileOperationCallback& callback,
     GDataFileError error,
     scoped_ptr<UploadFileInfo> upload_file_info);
 
   // The following functions are used to forward calls to asynchronous public
   // member functions to UI thread.
   void SearchAsyncOnUIThread(const std::string& search_query,
+                             const GURL& next_feed,
                              const SearchCallback& callback);
   void OpenFileOnUIThread(const FilePath& file_path,
                           const OpenFileCallback& callback);
   void CloseFileOnUIThread(const FilePath& file_path,
                            const FileOperationCallback& callback);
   void CopyOnUIThread(const FilePath& src_file_path,
                       const FilePath& dest_file_path,
                       const FileOperationCallback& callback);
   void MoveOnUIThread(const FilePath& src_file_path,
                       const FilePath& dest_file_path,
@@ skipping 135 matching lines @@
   // invalidate the weak pointers before any other members are destroyed.
   base::WeakPtrFactory<GDataFileSystem> ui_weak_ptr_factory_;
   // Unlike other classes, we need this as we need this to redirect a task
   // from IO thread to UI thread.
   base::WeakPtr<GDataFileSystem> ui_weak_ptr_;
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_