+/**
+ * modest_mail_operation_save_to_drafts:
+ * @self: a #ModestMailOperation
+ * @transport_account: a non-NULL #TnyTransportAccount
+ * @draft_msg: the previous draft message, in case it's an update
+ * to an existing draft.
+ * @from: the email address of the mail sender
+ * @to: a non-NULL email address of the mail receiver
+ * @cc: a comma-separated list of email addresses where to send a carbon copy
+ * @bcc: a comma-separated list of email addresses where to send a blind carbon copy
+ * @subject: the subject of the new mail
+ * @plain_body: the plain text body of the new mail.
+ * @html_body: the html version of the body of the new mail. If NULL, the mail will
+ * be sent with the plain body only.
+ * @attachments_list: a #GList of attachments, each attachment must be a #TnyMimePart
+ * @images_list: a #GList of image attachments, each attachment must be a #TnyMimePart
+ * @callback: the user callback, will be called when the operation finishes
+ * @user_data: data that will be passed to the user callback
+ *
+ * Save a mail message to drafts using the provided
+ * #TnyTransportAccount. This operation is asynchronous.
+ *
+ **/
+void modest_mail_operation_save_to_drafts (ModestMailOperation *self,
+ TnyTransportAccount *transport_account,
+ TnyMsg *draft_msg,
+ const gchar *from,
+ const gchar *to,
+ const gchar *cc,
+ const gchar *bcc,
+ const gchar *subject,
+ const gchar *plain_body,
+ const gchar *html_body,
+ const GList *attachments_list,
+ const GList *images_list,
+ TnyHeaderFlags priority_flags,
+ SaveToDraftstCallback callback,
+ gpointer user_data);
+/**
+ * modest_mail_operation_update_account:
+ * @self: a #ModestMailOperation
+ * @account_name: the id of a Modest account
+ * @poke_all: if TRUE it will also do a poke_status over all folders of the account
+ *
+ * Asynchronously refreshes the root folders of the given store
+ * account. The caller should add the #ModestMailOperation to a
+ * #ModestMailOperationQueue and then free it. The caller will be
+ * notified by the "progress_changed" signal each time the progress of
+ * the operation changes.
+ *
+ * Example
+ * <informalexample><programlisting>
+ * queue = modest_tny_platform_factory_get_modest_mail_operation_queue_instance (fact)
+ * mail_op = modest_mail_operation_new ();
+ * g_signal_connect (G_OBJECT (mail_op), "progress_changed", G_CALLBACK(on_progress_changed), NULL);
+ * modest_mail_operation_queue_add (queue, mail_op);
+ * modest_mail_operation_update_account (mail_op, account_name)
+ * g_object_unref (G_OBJECT (mail_op));
+ * </programlisting></informalexample>
+ *
+ * Note that the account_name *MUST* be a modest account name, not a
+ * tinymail store account name
+ *
+ **/
+void modest_mail_operation_update_account (ModestMailOperation *self,
+ const gchar *account_name,
+ gboolean poke_all,
+ RetrieveAllCallback retrieve_all_cb,
+ UpdateAccountCallback callback,
+ gpointer user_data);
+
+/* Functions that perform store operations */
+
+/**
+ * modest_mail_operation_create_folder:
+ * @self: a #ModestMailOperation
+ * @parent: the #TnyFolderStore which is the parent of the new folder
+ * @name: the non-NULL new name for the new folder
+ *
+ * Creates a new folder as a children of a existing one. If the store
+ * account supports subscriptions this method also sets the new folder
+ * as subscribed. This operation is synchronous, so the
+ * #ModestMailOperation should not be added to any
+ * #ModestMailOperationQueue
+ *
+ * Returns: a newly created #TnyFolder or NULL in case of error.
+ **/
+void modest_mail_operation_create_folder (ModestMailOperation *self,
+ TnyFolderStore *parent,
+ const gchar *name,
+ CreateFolderUserCallback callback,
+ gpointer user_data);
+
+/**
+ * modest_mail_operation_remove_folder:
+ * @self: a #ModestMailOperation
+ * @folder: a #TnyFolder
+ * @remove_to_trash: TRUE to move it to trash or FALSE to delete
+ * permanently
+ *
+ * Removes a folder. This operation is synchronous, so the
+ * #ModestMailOperation should not be added to any
+ * #ModestMailOperationQueue
+ **/
+void modest_mail_operation_remove_folder (ModestMailOperation *self,
+ TnyFolder *folder,
+ gboolean remove_to_trash);
+
+/**
+ * modest_mail_operation_rename_folder:
+ * @self: a #ModestMailOperation
+ * @folder: a #TnyFolder
+ * @name: a non-NULL name without "/"
+ *
+ * Renames a given folder with the provided new name. This operation
+ * is synchronous, so the #ModestMailOperation should not be added to
+ * any #ModestMailOperationQueue
+ **/
+void modest_mail_operation_rename_folder (ModestMailOperation *self,
+ TnyFolder *folder,
+ const gchar *name,
+ XferFolderAsyncUserCallback user_callback,
+ gpointer user_data);
+
+/**
+ * modest_mail_operation_xfer_folder:
+ * @self: a #ModestMailOperation
+ * @folder: a #TnyFolder
+ * @parent: the new parent of the folder as #TnyFolderStore
+ * @delete_original: wheter or not delete the original folder
+ * @user_callback: a #XferFolderAsyncUserCallback function to call after tinymail callback execution.
+ * @user_data: generic user data which will be passed to @user_callback function.
+ *
+ * Sets the given @folder as child of a provided #TnyFolderStore. This
+ * operation also transfers all the messages contained in the folder
+ * and all of his children folders with their messages as well. This
+ * operation is synchronous, so the #ModestMailOperation should not be
+ * added to any #ModestMailOperationQueue.
+ *
+ * If @delete_original is TRUE this function moves the original
+ * folder, if it is FALSE the it just copies it
+ *
+ **/
+void modest_mail_operation_xfer_folder (ModestMailOperation *self,
+ TnyFolder *folder,
+ TnyFolderStore *parent,
+ gboolean delete_original,
+ XferFolderAsyncUserCallback user_callback,
+ gpointer user_data);
+
+
+/* Functions that performs msg operations */
+
+/**
+ * modest_mail_operation_xfer_msgs:
+ * @self: a #ModestMailOperation
+ * @header_list: a #TnyList of #TnyHeader to transfer
+ * @folder: the #TnyFolder where the messages will be transferred
+ * @delete_original: whether or not delete the source messages
+ * @user_callback: a #XferFolderAsyncUserCallback function to call after tinymail callback execution.
+ * @user_data: generic user data which will be passed to @user_callback function.
+ *
+ * Asynchronously transfers messages from their current folder to
+ * another one. The caller should add the #ModestMailOperation to a
+ * #ModestMailOperationQueue and then free it. The caller will be
+ * notified by the "progress_changed" when the operation is completed.
+ *
+ * If the @delete_original paramter is TRUE then this function moves
+ * the messages between folders, otherwise it copies them.
+ *
+ * Example
+ * <informalexample><programlisting>
+ * queue = modest_tny_platform_factory_get_modest_mail_operation_queue_instance (fact);
+ * mail_op = modest_mail_operation_new ();
+ * modest_mail_operation_queue_add (queue, mail_op);
+ * g_signal_connect (G_OBJECT (mail_op), "progress_changed", G_CALLBACK(on_progress_changed), queue);
+ *
+ * modest_mail_operation_xfer_msg (mail_op, headers, folder, TRUE);
+ *
+ * g_object_unref (G_OBJECT (mail_op));
+ * </programlisting></informalexample>
+ *
+ **/
+void modest_mail_operation_xfer_msgs (ModestMailOperation *self,
+ TnyList *header_list,
+ TnyFolder *folder,
+ gboolean delete_original,
+ XferMsgsAsyncUserCallback user_callback,
+ gpointer user_data);
+
+/**
+ * modest_mail_operation_remove_msg:
+ * @self: a #ModestMailOperation
+ * @header: the #TnyHeader of the message to move
+ * @remove_to_trash: TRUE to move it to trash or FALSE to delete it
+ * permanently
+ *
+ * Deletes a message. This operation is synchronous, so the
+ * #ModestMailOperation should not be added to any
+ * #ModestMailOperationQueue
+ **/
+void modest_mail_operation_remove_msg (ModestMailOperation *self,
+ TnyHeader *header,
+ gboolean remove_to_trash);
+
+/**
+ * modest_mail_operation_remove_msg:
+ * @self: a #ModestMailOperation
+ * @headers: the #TnyList of the messages to delete
+ * @remove_to_trash: TRUE to move it to trash or FALSE to delete it
+ * permanently
+ *
+ * Deletes a list of messages. This operation is synchronous, so the
+ * #ModestMailOperation should not be added to any
+ * #ModestMailOperationQueue
+ **/
+void modest_mail_operation_remove_msgs (ModestMailOperation *self,
+ TnyList *headers,
+ gboolean remove_to_trash);
+
+/**
+ * modest_mail_operation_get_msg:
+ * @self: a #ModestMailOperation
+ * @header_list: the #TnyHeader of the message to get
+ * @user_callback: a #GetMsgAsyncUserCallback function to call after tinymail callback execution.
+ * @user_data: generic user data which will be passed to @user_callback function.
+ *
+ * Gets a message from header using an user defined @callback function
+ * pased as argument. This operation is asynchronous, so the
+ * #ModestMailOperation should be added to #ModestMailOperationQueue
+ **/
+void modest_mail_operation_get_msg (ModestMailOperation *self,
+ TnyHeader *header,
+ GetMsgAsyncUserCallback user_callback,
+ gpointer user_data);
+/**
+ * modest_mail_operation_get_msgs_full:
+ * @self: a #ModestMailOperation
+ * @header_list: a #TnyList of #TnyHeader objects to get and process
+ * @user_callback: a #TnyGetMsgCallback function to call after tinymail operation execution.
+ * @user_data: user data passed to both, user_callback and update_status_callback.
+ *
+ * Gets messages from headers list and process hem using @callback function
+ * pased as argument. This operation is asynchronous, so the
+ * #ModestMailOperation should be added to #ModestMailOperationQueue
+ **/
+void modest_mail_operation_get_msgs_full (ModestMailOperation *self,
+ TnyList *headers_list,
+ GetMsgAsyncUserCallback user_callback,
+ gpointer user_data,
+ GDestroyNotify notify);
+
+/**
+ * modest_mail_operation_run_queue:
+ * @self: a #ModestMailOperation
+ * @queue: a #ModestTnySendQueue
+ *
+ * This mail operation is special. It should be running every time the send queue
+ * is running (after queue-start), and we should notify end of the operation
+ * after queue-end. Then, we should only set this queue on queue-start signal, and
+ * it will clean up the operation (notify end) on queue-end.
+ */
+void modest_mail_operation_run_queue (ModestMailOperation *self,
+ ModestTnySendQueue *queue);
+
+/**
+ * modest_mail_operation_sync_folder:
+ * @self: a #ModestMailOperation
+ * @folder: a #TnyFolder
+ * @expunge: a #gboolean
+ *
+ * mail operation wrapper around tny_folder_sync () method, to keep modest
+ * running while we do that sync operation.
+ */
+void modest_mail_operation_sync_folder (ModestMailOperation *self,
+ TnyFolder *folder, gboolean expunge);