Add parsers for Drive v2 Change/ChangeList/Parents

chrome/browser/chromeos/gdata/drive_api_parser.h

Index: chrome/browser/chromeos/gdata/drive_api_parser.h
diff --git a/chrome/browser/chromeos/gdata/drive_api_parser.h b/chrome/browser/chromeos/gdata/drive_api_parser.h
index 704c3cc0b1d919b05de42b0e92e5479b95656c35..a43f51c6656d63aeae3dba4d9b3d4139ca9f1df7 100644
--- a/chrome/browser/chromeos/gdata/drive_api_parser.h
+++ b/chrome/browser/chromeos/gdata/drive_api_parser.h
@@ -258,7 +258,41 @@ class AppList {
   DISALLOW_COPY_AND_ASSIGN(AppList);
 };
 
-// FileResource reporesents a file or folder metadata in Drive.
+// ParentReference represents a directory.
+// https://developers.google.com/drive/v2/reference/parents
+class ParentReference {
+ public:
+  ~ParentReference();
+
+  // Registers the mapping between JSON field names and the members in this
+  // class.
+  static void RegisterJSONConverter(
+      base::JSONValueConverter<ParentReference>* converter);
+
+  // Creates parent reference from parsed JSON.
+  static scoped_ptr<ParentReference> CreateFrom(const base::Value& value);
+
+  // Returns the file id of the reference.
+  const std::string& file_id() const { return file_id_; }
+
+  // Returns true if the reference is root directory.
+  bool is_root() const { return is_root_; }
+
+ private:
+  friend class base::internal::RepeatedMessageConverter<ParentReference>;
+  ParentReference();
+
+  // Parses and initializes data members from content of |value|.
+  // Return false if parsing fails.
+  bool Parse(const base::Value& value);
+
+  std::string file_id_;
+  bool is_root_;
+
+  DISALLOW_COPY_AND_ASSIGN(ParentReference);
+};
+
+// FileResource represents a file or folder metadata in Drive.
 // https://developers.google.com/drive/v2/reference/files
 class FileResource {
  public:
@@ -268,6 +302,8 @@ class FileResource {
   // class.
   static void RegisterJSONConverter(
       base::JSONValueConverter<FileResource>* converter);
+
+  // Creates file resource from parsed JSON.
   static scoped_ptr<FileResource> CreateFrom(const base::Value& value);
 
   // Returns true if this is a directory.
@@ -290,6 +326,9 @@ class FileResource {
   // Returns modification time by the user.
   const base::Time& modified_by_me_date() const { return modified_by_me_date_; }
 
+  // Returns parent references (directories) of this file.
+  const ScopedVector<ParentReference>& parents() const { return parents_; }
+
   // Returns the download URL.
   const GURL& download_url() const { return download_url_; }
 
@@ -304,6 +343,7 @@ class FileResource {
 
  private:
   friend class base::internal::RepeatedMessageConverter<FileResource>;
+  friend class ChangeResource;
   friend class FileList;
   FileResource();
 
@@ -316,6 +356,7 @@ class FileResource {
   std::string mime_type_;
   std::string title_;
   base::Time modified_by_me_date_;
+  ScopedVector<ParentReference> parents_;
   GURL download_url_;
   std::string file_extension_;
   std::string md5_checksum_;
@@ -334,6 +375,8 @@ class FileList {
   // class.
   static void RegisterJSONConverter(
       base::JSONValueConverter<FileList>* converter);
+
+  // Creates file list from parsed JSON.
   static scoped_ptr<FileList> CreateFrom(const base::Value& value);
 
   // Returns the ETag of the list.
@@ -367,6 +410,99 @@ class FileList {
   DISALLOW_COPY_AND_ASSIGN(FileList);
 };
 
+// ChangeResource represents a change in a file.
+// https://developers.google.com/drive/v2/reference/changes
+class ChangeResource {
+ public:
+  ~ChangeResource();
+
+  // Registers the mapping between JSON field names and the members in this
+  // class.
+  static void RegisterJSONConverter(
+      base::JSONValueConverter<ChangeResource>* converter);
+
+  // Creates change resource from parsed JSON.
+  static scoped_ptr<ChangeResource> CreateFrom(const base::Value& value);
+
+  // Returns change ID for this change.  This is a monotonically increasing
+  // number.
+  int64 change_id() const { return change_id_; }
+
+  // Returns a string file ID for corresponding file of the change.
+  const std::string& file_id() const { return file_id_; }
+
+  // Returns true if this file is deleted in the change.
+  bool is_deleted() const { return deleted_; }
+
+  // Returns FileResource of the file which the change refers to.
+  const FileResource& file() const { return file_; }
+
+ private:
+  friend class base::internal::RepeatedMessageConverter<ChangeResource>;
+  friend class ChangeList;
+  ChangeResource();
+
+  // Parses and initializes data members from content of |value|.
+  // Return false if parsing fails.
+  bool Parse(const base::Value& value);
+
+  int64 change_id_;
+  std::string file_id_;
+  bool deleted_;
+  FileResource file_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChangeResource);
+};
+
+// ChangeList represents a set of changes in the drive.
+// https://developers.google.com/drive/v2/reference/changes/list
+class ChangeList {
+ public:
+  ~ChangeList();
+
+  // Registers the mapping between JSON field names and the members in this
+  // class.
+  static void RegisterJSONConverter(
+      base::JSONValueConverter<ChangeList>* converter);
+
+  // Creates change list from parsed JSON.
+  static scoped_ptr<ChangeList> CreateFrom(const base::Value& value);
+
+  // Returns the ETag of the list.
+  const std::string& etag() const { return etag_; }
+
+  // Returns the page token for the next page of files, if the list is large
+  // to fit in one response.  If this is empty, there is no more file lists.
+  const std::string& next_page_token() const { return next_page_token_; }
+
+  // Returns a link to the next page of files.  The URL includes the next page
+  // token.
+  const GURL& next_link() const { return next_link_; }
+
+  // Returns the largest change ID number.
+  int64 largest_change_id() const { return largest_change_id_; }
+
+  // Returns a set of changes in this list.
+  const ScopedVector<ChangeResource>& items() const { return items_; }
+
+ private:
+  friend class DriveAPIParserTest;
+  FRIEND_TEST_ALL_PREFIXES(DriveAPIParserTest, ChangeListParser);
+  ChangeList();
+
+  // Parses and initializes data members from content of |value|.
+  // Return false if parsing fails.
+  bool Parse(const base::Value& value);
+
+  std::string etag_;
+  std::string next_page_token_;
+  GURL next_link_;
+  int64 largest_change_id_;
+  ScopedVector<ChangeResource> items_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChangeList);
+};
+
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_DRIVE_API_PARSER_H_