## CamelFolder

CamelFolder

## Synopsis

    enum                CamelFolderFlags;
                        CamelFolder;
    #define             CAMEL_FOLDER_ERROR
    enum                CamelFolderError;
                        CamelFolderChangeInfo;
                        CamelFolderQuotaInfo;
    void                camel_folder_set_lock_async         (CamelFolder *folder,
                                                             gboolean skip_folder_lock);
    struct _CamelStore * camel_folder_get_parent_store      (CamelFolder *folder);
    const gchar *       camel_folder_get_full_name          (CamelFolder *folder);
    void                camel_folder_set_full_name          (CamelFolder *folder,
                                                             const gchar *full_name);
    const gchar *       camel_folder_get_display_name       (CamelFolder *folder);
    void                camel_folder_set_display_name       (CamelFolder *folder,
                                                             const gchar *display_name);
    const gchar *       camel_folder_get_description        (CamelFolder *folder);
    void                camel_folder_set_description        (CamelFolder *folder,
                                                             const gchar *description);
    CamelMessageFlags   camel_folder_get_permanent_flags    (CamelFolder *folder);
    CamelMessageFlags   camel_folder_get_message_flags      (CamelFolder *folder,
                                                             const gchar *uid);
    gboolean            camel_folder_set_message_flags      (CamelFolder *folder,
                                                             const gchar *uid,
                                                             CamelMessageFlags flags,
                                                             CamelMessageFlags set);
    gboolean            camel_folder_get_message_user_flag  (CamelFolder *folder,
                                                             const gchar *uid,
                                                             const gchar *name);
    void                camel_folder_set_message_user_flag  (CamelFolder *folder,
                                                             const gchar *uid,
                                                             const gchar *name,
                                                             gboolean value);
    const gchar *       camel_folder_get_message_user_tag   (CamelFolder *folder,
                                                             const gchar *uid,
                                                             const gchar *name);
    void                camel_folder_set_message_user_tag   (CamelFolder *folder,
                                                             const gchar *uid,
                                                             const gchar *name,
                                                             const gchar *value);
    gboolean            camel_folder_has_summary_capability (CamelFolder *folder);
    gint                camel_folder_get_message_count      (CamelFolder *folder);
    gint                camel_folder_get_unread_message_count
                                                            (CamelFolder *folder);
    gint                camel_folder_get_deleted_message_count
                                                            (CamelFolder *folder);
    GPtrArray *         camel_folder_get_summary            (CamelFolder *folder);
    void                camel_folder_free_summary           (CamelFolder *folder,
                                                             GPtrArray *array);
    #define             camel_folder_delete_message         (folder,
                                                             uid)
    GPtrArray *         camel_folder_get_uids               (CamelFolder *folder);
    void                camel_folder_free_uids              (CamelFolder *folder,
                                                             GPtrArray *array);
    GPtrArray *         camel_folder_get_uncached_uids      (CamelFolder *folder,
                                                             GPtrArray *uids,
                                                             GError **error);
    gint                camel_folder_cmp_uids               (CamelFolder *folder,
                                                             const gchar *uid1,
                                                             const gchar *uid2);
    void                camel_folder_sort_uids              (CamelFolder *folder,
                                                             GPtrArray *uids);
    gboolean            camel_folder_has_search_capability  (CamelFolder *folder);
    GPtrArray *         camel_folder_search_by_expression   (CamelFolder *folder,
                                                             const gchar *expr,
                                                             GError **error);
    GPtrArray *         camel_folder_search_by_uids         (CamelFolder *folder,
                                                             const gchar *expr,
                                                             GPtrArray *uids,
                                                             GError **error);
    void                camel_folder_search_free            (CamelFolder *folder,
                                                             GPtrArray *result);
    guint32             camel_folder_count_by_expression    (CamelFolder *folder,
                                                             const gchar *expression,
                                                             GError **error);
    CamelMessageInfo *  camel_folder_get_message_info       (CamelFolder *folder,
                                                             const gchar *uid);
    void                camel_folder_free_message_info      (CamelFolder *folder,
                                                             CamelMessageInfo *info);
    void                camel_folder_ref_message_info       (CamelFolder *folder,
                                                             CamelMessageInfo *info);
    void                camel_folder_delete                 (CamelFolder *folder);
    void                camel_folder_rename                 (CamelFolder *folder,
                                                             const gchar *new_name);
    void                camel_folder_changed                (CamelFolder *folder,
                                                             CamelFolderChangeInfo *changes);
    void                camel_folder_freeze                 (CamelFolder *folder);
    void                camel_folder_thaw                   (CamelFolder *folder);
    gboolean            camel_folder_is_frozen              (CamelFolder *folder);
    gint                camel_folder_get_frozen_count       (CamelFolder *folder);
    CamelFolderQuotaInfo * camel_folder_quota_info_new      (const gchar *name,
                                                             guint64 used,
                                                             guint64 total);
    CamelFolderQuotaInfo * camel_folder_quota_info_clone    (const CamelFolderQuotaInfo *info);
    void                camel_folder_quota_info_free        (CamelFolderQuotaInfo *info);
    void                camel_folder_free_nop               (CamelFolder *folder,
                                                             GPtrArray *array);
    void                camel_folder_free_shallow           (CamelFolder *folder,
                                                             GPtrArray *array);
    void                camel_folder_free_deep              (CamelFolder *folder,
                                                             GPtrArray *array);
    gchar *             camel_folder_get_filename           (CamelFolder *folder,
                                                             const gchar *uid,
                                                             GError **error);
    gboolean            camel_folder_append_message_sync    (CamelFolder *folder,
                                                             CamelMimeMessage *message,
                                                             CamelMessageInfo *info,
                                                             gchar **appended_uid,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                camel_folder_append_message         (CamelFolder *folder,
                                                             CamelMimeMessage *message,
                                                             CamelMessageInfo *info,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    gboolean            camel_folder_append_message_finish  (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             gchar **appended_uid,
                                                             GError **error);
    gboolean            camel_folder_expunge_sync           (CamelFolder *folder,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                camel_folder_expunge                (CamelFolder *folder,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    gboolean            camel_folder_expunge_finish         (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             GError **error);
    CamelMimeMessage *  camel_folder_get_message_sync       (CamelFolder *folder,
                                                             const gchar *message_uid,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                camel_folder_get_message            (CamelFolder *folder,
                                                             const gchar *message_uid,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    CamelMimeMessage *  camel_folder_get_message_finish     (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             GError **error);
    CamelFolderQuotaInfo * camel_folder_get_quota_info_sync (CamelFolder *folder,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                camel_folder_get_quota_info         (CamelFolder *folder,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    CamelFolderQuotaInfo * camel_folder_get_quota_info_finish
                                                            (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             GError **error);
    gboolean            camel_folder_refresh_info_sync      (CamelFolder *folder,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                camel_folder_refresh_info           (CamelFolder *folder,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    gboolean            camel_folder_refresh_info_finish    (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             GError **error);
    gboolean            camel_folder_synchronize_sync       (CamelFolder *folder,
                                                             gboolean expunge,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                camel_folder_synchronize            (CamelFolder *folder,
                                                             gboolean expunge,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    gboolean            camel_folder_synchronize_finish     (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             GError **error);
    gboolean            camel_folder_synchronize_message_sync
                                                            (CamelFolder *folder,
                                                             const gchar *message_uid,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                camel_folder_synchronize_message    (CamelFolder *folder,
                                                             const gchar *message_uid,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    gboolean            camel_folder_synchronize_message_finish
                                                            (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             GError **error);
    gboolean            camel_folder_transfer_messages_to_sync
                                                            (CamelFolder *source,
                                                             GPtrArray *message_uids,
                                                             CamelFolder *destination,
                                                             gboolean delete_originals,
                                                             GPtrArray **transferred_uids,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                camel_folder_transfer_messages_to   (CamelFolder *source,
                                                             GPtrArray *message_uids,
                                                             CamelFolder *destination,
                                                             gboolean delete_originals,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    gboolean            camel_folder_transfer_messages_to_finish
                                                            (CamelFolder *source,
                                                             GAsyncResult *result,
                                                             GPtrArray **transferred_uids,
                                                             GError **error);
    CamelFolderChangeInfo * camel_folder_change_info_new    (void);
    void                camel_folder_change_info_clear      (CamelFolderChangeInfo *info);
    void                camel_folder_change_info_free       (CamelFolderChangeInfo *info);
    gboolean            camel_folder_change_info_changed    (CamelFolderChangeInfo *info);
    void                camel_folder_change_info_add_source (CamelFolderChangeInfo *info,
                                                             const gchar *uid);
    void                camel_folder_change_info_add_source_list
                                                            (CamelFolderChangeInfo *info,
                                                             const GPtrArray *list);
    void                camel_folder_change_info_add_update (CamelFolderChangeInfo *info,
                                                             const gchar *uid);
    void                camel_folder_change_info_add_update_list
                                                            (CamelFolderChangeInfo *info,
                                                             const GPtrArray *list);
    void                camel_folder_change_info_build_diff (CamelFolderChangeInfo *info);
    void                camel_folder_change_info_cat        (CamelFolderChangeInfo *info,
                                                             CamelFolderChangeInfo *src);
    void                camel_folder_change_info_add_uid    (CamelFolderChangeInfo *info,
                                                             const gchar *uid);
    void                camel_folder_change_info_remove_uid (CamelFolderChangeInfo *info,
                                                             const gchar *uid);
    void                camel_folder_change_info_change_uid (CamelFolderChangeInfo *info,
                                                             const gchar *uid);
    void                camel_folder_change_info_recent_uid (CamelFolderChangeInfo *info,
                                                             const gchar *uid);
    enum                CamelFolderLock;
    void                camel_folder_lock                   (CamelFolder *folder,
                                                             CamelFolderLock lock);
    void                camel_folder_unlock                 (CamelFolder *folder,
                                                             CamelFolderLock lock);

## Object Hierarchy

      GObject
       +----CamelObject
             +----CamelFolder
                   +----CamelDiscoFolder
                   +----CamelOfflineFolder
                   +----CamelVeeFolder

## Properties

      "description"              gchar*                : Read / Write / Construct
      "display-name"             gchar*                : Read / Write / Construct
      "full-name"                gchar*                : Read / Write / Construct
      "parent-store"             CamelStore*           : Read / Write / Construct Only

## Signals

      "changed"                                        : Run First
      "deleted"                                        : Run First
      "renamed"                                        : Run First

## Description

## Details

### enum CamelFolderFlags

    typedef enum {
    	CAMEL_FOLDER_HAS_SUMMARY_CAPABILITY = 1 << 0,
    	CAMEL_FOLDER_HAS_SEARCH_CAPABILITY  = 1 << 1,
    	CAMEL_FOLDER_FILTER_RECENT          = 1 << 2,
    	CAMEL_FOLDER_HAS_BEEN_DELETED       = 1 << 3,
    	CAMEL_FOLDER_IS_TRASH               = 1 << 4,
    	CAMEL_FOLDER_IS_JUNK                = 1 << 5,
    	CAMEL_FOLDER_FILTER_JUNK            = 1 << 6
    } CamelFolderFlags;

### CamelFolder

    typedef struct _CamelFolder CamelFolder;

### CAMEL_FOLDER_ERROR

    #define             CAMEL_FOLDER_ERROR

Since 2.32

### enum CamelFolderError

    typedef enum {
    	CAMEL_FOLDER_ERROR_INVALID,
    	CAMEL_FOLDER_ERROR_INVALID_STATE,
    	CAMEL_FOLDER_ERROR_NON_EMPTY,
    	CAMEL_FOLDER_ERROR_NON_UID,
    	CAMEL_FOLDER_ERROR_INSUFFICIENT_PERMISSION,
    	CAMEL_FOLDER_ERROR_INVALID_PATH,
    	CAMEL_FOLDER_ERROR_INVALID_UID,
    	CAMEL_FOLDER_ERROR_SUMMARY_INVALID
    } CamelFolderError;

Since 2.32

### CamelFolderChangeInfo

    typedef struct {
    	GPtrArray *uid_added;
    	GPtrArray *uid_removed;
    	GPtrArray *uid_changed;
    	GPtrArray *uid_recent;

    	CamelFolderChangeInfoPrivate *priv;
    } CamelFolderChangeInfo;

### CamelFolderQuotaInfo

    typedef struct {
    	gchar *name;
    	guint64 used;
    	guint64 total;

    	struct _CamelFolderQuotaInfo *next;
    } CamelFolderQuotaInfo;

Since 2.24

### camel_folder_set_lock_async ()

    void                camel_folder_set_lock_async         (CamelFolder *folder,
                                                             gboolean skip_folder_lock);

FIXME Document me!

`folder` : | a CamelFolder

Since 2.30

### camel_folder_get_parent_store ()

    struct _CamelStore * camel_folder_get_parent_store      (CamelFolder *folder);

`folder` : | a CamelFolder
Returns : | the parent CamelStore of the folder

### camel_folder_get_full_name ()

    const gchar *       camel_folder_get_full_name          (CamelFolder *folder);

Returns the fully qualified name of the folder.

`folder` : | a CamelFolder
Returns : | the fully qualified name of the folder

### camel_folder_set_full_name ()

    void                camel_folder_set_full_name          (CamelFolder *folder,
                                                             const gchar *full_name);

Sets the fully qualified name of the folder.

`folder` : | a CamelFolder
`full_name` : | a fully qualified name for the folder

Since 2.32

### camel_folder_get_display_name ()

    const gchar *       camel_folder_get_display_name       (CamelFolder *folder);

Returns the display name for the folder. The fully qualified name can be obtained with `camel_folder_get_full_name()`.

`folder` : | a CamelFolder
Returns : | the display name of the folder

### camel_folder_set_display_name ()

    void                camel_folder_set_display_name       (CamelFolder *folder,
                                                             const gchar *display_name);

Sets the display name for the folder.

`folder` : | a CamelFolder
`display_name` : |

Since 2.32

### camel_folder_get_description ()

    const gchar *       camel_folder_get_description        (CamelFolder *folder);

Returns a description of the folder suitable for displaying to the user.

`folder` : | a CamelFolder
Returns : | a description of the folder

Since 2.32

### camel_folder_set_description ()

    void                camel_folder_set_description        (CamelFolder *folder,
                                                             const gchar *description);

Sets a description of the folder suitable for displaying to the user.

`folder` : | a CamelFolder
`description` : | a description of the folder

Since 2.32

### camel_folder_get_permanent_flags ()

    CamelMessageFlags   camel_folder_get_permanent_flags    (CamelFolder *folder);

`folder` : | a CamelFolder
Returns : | the set of CamelMessageFlags that can be permanently stored on a message between sessions. If it includes CAMEL_FLAG_USER, then user-defined flags will be remembered.

### camel_folder_get_message_flags ()

    CamelMessageFlags   camel_folder_get_message_flags      (CamelFolder *folder,
                                                             const gchar *uid);

### Warning

`camel_folder_get_message_flags` is deprecated and should not be used in newly-written code. Use `camel_folder_get_message_info()` instead.

`folder` : | a CamelFolder
`uid` : | the UID of a message in `folder`
Returns : | the CamelMessageFlags that are set on the indicated message.

### camel_folder_set_message_flags ()

    gboolean            camel_folder_set_message_flags      (CamelFolder *folder,
                                                             const gchar *uid,
                                                             CamelMessageFlags flags,
                                                             CamelMessageFlags set);

### Warning

`camel_folder_set_message_flags` is deprecated and should not be used in newly-written code. Use `camel_message_info_set_flags()` on the message info directly (when it works)

Sets those flags specified by `flags` to the values specified by `set` on the indicated message. (This may or may not persist after the folder or store is closed. See `camel_folder_get_permanent_flags()`)

E.g. to set the deleted flag and clear the draft flag, use camel_folder_set_message_flags (folder, uid, CAMEL_MESSAGE_DELETED|CAMEL_MESSAGE_DRAFT, CAMEL_MESSAGE_DELETED);

`folder` : | a CamelFolder
`uid` : | the UID of a message in `folder`
`flags` : | a set of CamelMessageFlag values to set
`set` : | the mask of values in `flags` to use.
Returns : | `TRUE` if the flags were changed or `FALSE` otherwise

### camel_folder_get_message_user_flag ()

    gboolean            camel_folder_get_message_user_flag  (CamelFolder *folder,
                                                             const gchar *uid,
                                                             const gchar *name);

### Warning

`camel_folder_get_message_user_flag` is deprecated and should not be used in newly-written code. Use `camel_message_info_get_user_flag()` on the message info directly

`folder` : | a CamelFolder
`uid` : | the UID of a message in `folder`
`name` : | the name of a user flag
Returns : | `TRUE` if the given user flag is set on the message or `FALSE` otherwise

### camel_folder_set_message_user_flag ()

    void                camel_folder_set_message_user_flag  (CamelFolder *folder,
                                                             const gchar *uid,
                                                             const gchar *name,
                                                             gboolean value);

### Warning

`camel_folder_set_message_user_flag` is deprecated and should not be used in newly-written code. Use `camel_message_info_set_user_flag()` on the CamelMessageInfo directly (when it works)

Sets the user flag specified by `name` to the value specified by `value` on the indicated message. (This may or may not persist after the folder or store is closed. See `camel_folder_get_permanent_flags()`)

`folder` : | a CamelFolder
`uid` : | the UID of a message in `folder`
`name` : | the name of the user flag to set
`value` : | the value to set it to

### camel_folder_get_message_user_tag ()

    const gchar *       camel_folder_get_message_user_tag   (CamelFolder *folder,
                                                             const gchar *uid,
                                                             const gchar *name);

### Warning

`camel_folder_get_message_user_tag` is deprecated and should not be used in newly-written code. Use `camel_message_info_get_user_tag()` on the CamelMessageInfo directly.

`folder` : | a CamelFolder
`uid` : | the UID of a message in `folder`
`name` : | the name of a user tag
Returns : | the value of the user tag

### camel_folder_set_message_user_tag ()

    void                camel_folder_set_message_user_tag   (CamelFolder *folder,
                                                             const gchar *uid,
                                                             const gchar *name,
                                                             const gchar *value);

### Warning

`camel_folder_set_message_user_tag` is deprecated and should not be used in newly-written code. Use `camel_message_info_set_user_tag()` on the CamelMessageInfo directly (when it works).

Sets the user tag specified by `name` to the value specified by `value` on the indicated message. (This may or may not persist after the folder or store is closed. See `camel_folder_get_permanent_flags()`)

`folder` : | a CamelFolder
`uid` : | the UID of a message in `folder`
`name` : | the name of the user tag to set
`value` : | the value to set it to

### camel_folder_has_summary_capability ()

    gboolean            camel_folder_has_summary_capability (CamelFolder *folder);

Get whether or not the folder has a summary.

`folder` : | a CamelFolder
Returns : | `TRUE` if a summary is available or `FALSE` otherwise

### camel_folder_get_message_count ()

    gint                camel_folder_get_message_count      (CamelFolder *folder);

`folder` : | a CamelFolder
Returns : | the number of messages in the folder, or `-1` if unknown

### camel_folder_get_unread_message_count ()

    gint                camel_folder_get_unread_message_count
                                                            (CamelFolder *folder);

### Warning

`camel_folder_get_unread_message_count` is deprecated and should not be used in newly-written code. use `camel_object_get()` instead.

`folder` : | a CamelFolder
Returns : | the number of unread messages in the folder, or `-1` if unknown

### camel_folder_get_deleted_message_count ()

    gint                camel_folder_get_deleted_message_count
                                                            (CamelFolder *folder);

`folder` : | a CamelFolder
Returns : | the number of deleted messages in the folder, or `-1` if unknown

### camel_folder_get_summary ()

    GPtrArray *         camel_folder_get_summary            (CamelFolder *folder);

This returns the summary information for the folder. This array should not be modified, and must be freed with `camel_folder_free_summary()`.

`folder` : | a CamelFolder
Returns : | an array of CamelMessageInfo

### camel_folder_free_summary ()

    void                camel_folder_free_summary           (CamelFolder *folder,
                                                             GPtrArray *array);

Frees the summary array returned by `camel_folder_get_summary()`.

`folder` : | a CamelFolder
`array` : | the summary array to free

### camel_folder_delete_message()

    #define             camel_folder_delete_message(folder, uid)

`folder` : |
`uid` : |

### camel_folder_get_uids ()

    GPtrArray *         camel_folder_get_uids               (CamelFolder *folder);

Get the list of UIDs available in a folder. This routine is useful for finding what messages are available when the folder does not support summaries. The returned array should not be modified, and must be freed by passing it to `camel_folder_free_uids()`.

`folder` : | a CamelFolder
Returns : | a GPtrArray of UIDs corresponding to the messages available in the folder

### camel_folder_free_uids ()

    void                camel_folder_free_uids              (CamelFolder *folder,
                                                             GPtrArray *array);

Frees the array of UIDs returned by `camel_folder_get_uids()`.

`folder` : | a CamelFolder
`array` : | the array of uids to free

### camel_folder_get_uncached_uids ()

    GPtrArray *         camel_folder_get_uncached_uids      (CamelFolder *folder,
                                                             GPtrArray *uids,
                                                             GError **error);

`folder` : | a CamelFolder
`uids` : | the array of uids to filter down to uncached ones.
`error` : |
Returns : | the known-uncached uids from a list of uids. It may return uids which are locally cached but should never filter out a uid which is not locally cached. Free the result by called `camel_folder_free_uids()`. Frees the array of UIDs returned by `camel_folder_get_uids()`.

Since 2.26

### camel_folder_cmp_uids ()

    gint                camel_folder_cmp_uids               (CamelFolder *folder,
                                                             const gchar *uid1,
                                                             const gchar *uid2);

Compares two uids. The return value meaning is the same as in any other compare function.

Note that the default compare function expects a decimal number at the beginning of a uid, thus if provider uses different uid values, then it should subclass this function.

`folder` : | a CamelFolder
`uid1` : | The first uid.
`uid2` : | the second uid.
Returns : |

Since 2.28

### camel_folder_sort_uids ()

    void                camel_folder_sort_uids              (CamelFolder *folder,
                                                             GPtrArray *uids);

Sorts the array of UIDs.

`folder` : | a CamelFolder
`uids` : | array of uids

Since 2.24

### camel_folder_has_search_capability ()

    gboolean            camel_folder_has_search_capability  (CamelFolder *folder);

Checks if a folder supports searching.

`folder` : | a CamelFolder
Returns : | `TRUE` if the folder supports searching or `FALSE` otherwise

### camel_folder_search_by_expression ()

    GPtrArray *         camel_folder_search_by_expression   (CamelFolder *folder,
                                                             const gchar *expr,
                                                             GError **error);

Searches the folder for messages matching the given search expression.

`folder` : | a CamelFolder
`expr` : | a search expression
`error` : | return location for a GError, or `NULL`
Returns : | a GPtrArray of uids of matching messages. The caller must free the list and each of the elements when it is done.

### camel_folder_search_by_uids ()

    GPtrArray *         camel_folder_search_by_uids         (CamelFolder *folder,
                                                             const gchar *expr,
                                                             GPtrArray *uids,
                                                             GError **error);

Search a subset of uid's for an expression match.

`folder` : | a CamelFolder
`expr` : | search expression
`uids` : | array of uid's to match against.
`error` : | return location for a GError, or `NULL`
Returns : | a GPtrArray of uids of matching messages. The caller must free the list and each of the elements when it is done.

### camel_folder_search_free ()

    void                camel_folder_search_free            (CamelFolder *folder,
                                                             GPtrArray *result);

Free the result of a search as gotten by `camel_folder_search()` or `camel_folder_search_by_uids()`.

`folder` : | a CamelFolder
`result` : | search results to free

### camel_folder_count_by_expression ()

    guint32             camel_folder_count_by_expression    (CamelFolder *folder,
                                                             const gchar *expression,
                                                             GError **error);

Searches the folder for count of messages matching the given search expression.

`folder` : | a CamelFolder
`expression` : |
`error` : | return location for a GError, or `NULL`
Returns : | an interger

Since 2.26

### camel_folder_get_message_info ()

    CamelMessageInfo *  camel_folder_get_message_info       (CamelFolder *folder,
                                                             const gchar *uid);

Retrieve the CamelMessageInfo for the specified `uid`. This return must be freed using `camel_folder_free_message_info()`.

`folder` : | a CamelFolder
`uid` : | the uid of a message
Returns : | the summary information for the indicated message, or `NULL` if the uid does not exist

### camel_folder_free_message_info ()

    void                camel_folder_free_message_info      (CamelFolder *folder,
                                                             CamelMessageInfo *info);

Free (unref) a CamelMessageInfo, previously obtained with `camel_folder_get_message_info()`.

`folder` : | a CamelFolder
`info` : | a CamelMessageInfo

### camel_folder_ref_message_info ()

    void                camel_folder_ref_message_info       (CamelFolder *folder,
                                                             CamelMessageInfo *info);

### Warning

`camel_folder_ref_message_info` is deprecated and should not be used in newly-written code. Use `camel_message_info_ref()` directly.

Ref a CamelMessageInfo, previously obtained with `camel_folder_get_message_info()`.

`folder` : | a CamelFolder
`info` : | a CamelMessageInfo

### camel_folder_delete ()

    void                camel_folder_delete                 (CamelFolder *folder);

Marks `folder` as deleted and performs any required cleanup.

This also emits the "deleted" signal from an idle source on the main loop. The idle source's priority is G_PRIORITY_DEFAULT_IDLE.

`folder` : | a CamelFolder

### camel_folder_rename ()

    void                camel_folder_rename                 (CamelFolder *folder,
                                                             const gchar *new_name);

Marks `folder` as renamed.

This also emits the "renamed" signal from an idle source on the main loop. The idle source's priority is G_PRIORITY_DEFAULT_IDLE.

NOTE: This is an internal function used by camel stores, no locking is performed on the folder.

`folder` : | a CamelFolder
`new_name` : | new name for the folder

### camel_folder_changed ()

    void                camel_folder_changed                (CamelFolder *folder,
                                                             CamelFolderChangeInfo *changes);

Emits the "changed" signal from an idle source on the main loop. The idle source's priority is G_PRIORITY_DEFAULT_IDLE.

`folder` : | a CamelFolder
`changes` : | change information for `folder`

Since 2.32

### camel_folder_freeze ()

    void                camel_folder_freeze                 (CamelFolder *folder);

Freezes the folder so that a series of operation can be performed without "folder_changed" signals being emitted. When the folder is later thawed with `camel_folder_thaw()`, the suppressed signals will be emitted.

`folder` : | a CamelFolder

### camel_folder_thaw ()

    void                camel_folder_thaw                   (CamelFolder *folder);

Thaws the folder and emits any pending folder_changed signals.

`folder` : | a CamelFolder

### camel_folder_is_frozen ()

    gboolean            camel_folder_is_frozen              (CamelFolder *folder);

`folder` : | a CamelFolder
Returns : | whether or not the folder is frozen

### camel_folder_get_frozen_count ()

    gint                camel_folder_get_frozen_count       (CamelFolder *folder);

`folder` : | a CamelFolder
Returns : |

Since 2.32

### camel_folder_quota_info_new ()

    CamelFolderQuotaInfo * camel_folder_quota_info_new      (const gchar *name,
                                                             guint64 used,
                                                             guint64 total);

`name` : | Name of the quota.
`used` : | Current usage of the quota.
`total` : | Total available size of the quota.
Returns : | newly allocated CamelFolderQuotaInfo structure with initialized values based on the parameters, with next member set to NULL.

Since 2.24

### camel_folder_quota_info_clone ()

    CamelFolderQuotaInfo * camel_folder_quota_info_clone    (const CamelFolderQuotaInfo *info);

Makes a copy of the given info and all next-s.

`info` : | a CamelFolderQuotaInfo object to clone.
Returns : |

Since 2.24

### camel_folder_quota_info_free ()

    void                camel_folder_quota_info_free        (CamelFolderQuotaInfo *info);

Frees this and all next objects.

`info` : | a CamelFolderQuotaInfo object to free.

Since 2.24

### camel_folder_free_nop ()

    void                camel_folder_free_nop               (CamelFolder *folder,
                                                             GPtrArray *array);

"Frees" the provided array by doing nothing. Used by CamelFolder subclasses as an implementation for free_uids, or free_summary when the returned array is "static" information and should not be freed.

`folder` : | a CamelFolder
`array` : | an array of uids or CamelMessageInfo

### camel_folder_free_shallow ()

    void                camel_folder_free_shallow           (CamelFolder *folder,
                                                             GPtrArray *array);

Frees the provided array but not its contents. Used by CamelFolder subclasses as an implementation for free_uids or free_summary when the returned array needs to be freed but its contents come from "static" information.

`folder` : | a CamelFolder
`array` : | an array of uids or CamelMessageInfo

### camel_folder_free_deep ()

    void                camel_folder_free_deep              (CamelFolder *folder,
                                                             GPtrArray *array);

Frees the provided array and its contents. Used by CamelFolder subclasses as an implementation for free_uids when the provided information was created explicitly by the corresponding get_ call.

`folder` : | a CamelFolder
`array` : | an array of uids

### camel_folder_get_filename ()

    gchar *             camel_folder_get_filename           (CamelFolder *folder,
                                                             const gchar *uid,
                                                             GError **error);

`folder` : |
`uid` : |
`error` : |
Returns : |

Since 2.26

### camel_folder_append_message_sync ()

    gboolean            camel_folder_append_message_sync    (CamelFolder *folder,
                                                             CamelMimeMessage *message,
                                                             CamelMessageInfo *info,
                                                             gchar **appended_uid,
                                                             GCancellable *cancellable,
                                                             GError **error);

Appends `message` to `folder`. Only the flag and tag data from `info` are used. If `info` is `NULL`, no flags or tags will be set.

`folder` : | a CamelFolder
`message` : | a CamelMimeMessage
`info` : | a CamelMessageInfo with additional flags/etc to set on the new message, or `NULL`
`appended_uid` : | if non-`NULL`, the UID of the appended message will be returned here, if it is known
`cancellable` : | optional GCancellable object, or `NULL`
`error` : | return location for a GError, or `NULL`
Returns : | `TRUE` on success, `FALSE` on error

Since 3.0

### camel_folder_append_message ()

    void                camel_folder_append_message         (CamelFolder *folder,
                                                             CamelMimeMessage *message,
                                                             CamelMessageInfo *info,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Appends `message` to `folder` asynchronously. Only the flag and tag data from `info` are used. If `info` is `NULL`, no flags or tags will be set.

When the operation is finished, `callback` will be called. You can then call `camel_folder_append_message_finish()` to get the result of the operation.

`folder` : |
`message` : | a CamelMimeMessage
`info` : | a CamelMessageInfo with additional flags/etc to set on the new message, or `NULL`
`io_priority` : | the I/O priority of the request
`cancellable` : | optional GCancellable object, or `NULL`
`callback` : | a GAsyncReadyCallback to call when the request is satisfied
`user_data` : | data to pass to the callback function

Since 3.0

### camel_folder_append_message_finish ()

    gboolean            camel_folder_append_message_finish  (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             gchar **appended_uid,
                                                             GError **error);

Finishes the operation started with `camel_folder_append_message_finish()`.

`folder` : | a CamelFolder
`result` : | a GAsyncResult
`appended_uid` : | if non-`NULL`, the UID of the appended message will be returned here, if it is known
`error` : | return location for a GError, or `NULL`
Returns : | `TRUE` on success, `FALSE` on error

Since 3.0

### camel_folder_expunge_sync ()

    gboolean            camel_folder_expunge_sync           (CamelFolder *folder,
                                                             GCancellable *cancellable,
                                                             GError **error);

Deletes messages which have been marked as "DELETED".

`folder` : | a CamelFolder
`cancellable` : | optional GCancellable object, or `NULL`
`error` : | return location for a GError, or `NULL`
Returns : | `TRUE` on success, `FALSE` on error

Since 3.0

### camel_folder_expunge ()

    void                camel_folder_expunge                (CamelFolder *folder,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Asynchronously deletes messages which have been marked as "DELETED".

When the operation is finished, `callback` will be called. You can then call `camel_folder_expunge_finish()` to get the result of the operation.

`folder` : | a CamelFolder
`io_priority` : | the I/O priority of the request
`cancellable` : | optional GCancellable object, or `NULL`
`callback` : | a GAsyncReadyCallback to call when the request is satisfied
`user_data` : | data to pass to the callback function

Since 3.0

### camel_folder_expunge_finish ()

    gboolean            camel_folder_expunge_finish         (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             GError **error);

Finishes the operation started with `camel_folder_expunge()`.

`folder` : | a CamelFolder
`result` : | a GAsyncResult
`error` : | return location for a GError, or `NULL`
Returns : | `TRUE` on success, `FALSE` on error

Since 3.0

### camel_folder_get_message_sync ()

    CamelMimeMessage *  camel_folder_get_message_sync       (CamelFolder *folder,
                                                             const gchar *message_uid,
                                                             GCancellable *cancellable,
                                                             GError **error);

Gets the message corresponding to `message_uid` from `folder`.

`folder` : | a CamelFolder
`message_uid` : | the message UID
`cancellable` : | optional GCancellable object, or `NULL`
`error` : | return location for a GError, or `NULL`
Returns : | a CamelMimeMessage corresponding to the requested UID

Since 3.0

### camel_folder_get_message ()

    void                camel_folder_get_message            (CamelFolder *folder,
                                                             const gchar *message_uid,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Asynchronously gets the message corresponding to `message_uid` from `folder`.

When the operation is finished, `callback` will be called. You can then call `camel_folder_get_message_finish()` to get the result of the operation.

`folder` : | a CamelFolder
`message_uid` : | the message UID
`io_priority` : | the I/O priority of the request
`cancellable` : | optional GCancellable object, or `NULL`
`callback` : | a GAsyncReadyCallback to call when the request is satisfied
`user_data` : | data to pass to the callback function

Since 3.0

### camel_folder_get_message_finish ()

    CamelMimeMessage *  camel_folder_get_message_finish     (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             GError **error);

Finishes the operation started with `camel_folder_get_message()`.

`folder` : | a CamelFolder
`result` : | a GAsyncResult
`error` : | return location for a GError or `NULL`
Returns : | a CamelMimeMessage corresponding to the requested UID

Since 3.0

### camel_folder_get_quota_info_sync ()

    CamelFolderQuotaInfo * camel_folder_get_quota_info_sync (CamelFolder *folder,
                                                             GCancellable *cancellable,
                                                             GError **error);

Gets a list of known quotas for `folder`. Free the returned CamelFolderQuotaInfo struct with `camel_folder_quota_info_free()`.

If quotas are not supported for `folder`, the function returns `NULL` and sets `error` to G_IO_ERROR_NOT_SUPPORTED.

`folder` : | a CamelFolder
`cancellable` : | optional GCancellable object, or `NULL`
`error` : | return location for a GError, or `NULL`
Returns : | a CamelFolderQuotaInfo, or `NULL`

Since 3.2

### camel_folder_get_quota_info ()

    void                camel_folder_get_quota_info         (CamelFolder *folder,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Asynchronously gets a list of known quotas for `folder`.

When the operation is finished, `callback` will be called. You can then call `camel_folder_get_quota_info_finish()` to get the result of the operation.

`folder` : | a CamelFolder
`io_priority` : | the I/O priority of the request
`cancellable` : | optional GCancellable object, or `NULL`
`callback` : | a GAsyncReadyCallback to call when the request is satisfied
`user_data` : | data to pass to the callback function

Since 3.2

### camel_folder_get_quota_info_finish ()

    CamelFolderQuotaInfo * camel_folder_get_quota_info_finish
                                                            (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             GError **error);

Finishes the operation started with `camel_folder_get_quota_info()`. Free the returned CamelFolderQuotaInfo struct with `camel_folder_quota_info_free()`.

If quotas are not supported for `folder`, the function returns `NULL` and sets `error` to G_IO_ERROR_NOT_SUPPORTED.

`folder` : | a CamelFolder
`result` : | a GAsyncResult
`error` : | return location for a GError or `NULL`
Returns : | a CamelFolderQuotaInfo, or `NULL`

Since 3.2

### camel_folder_refresh_info_sync ()

    gboolean            camel_folder_refresh_info_sync      (CamelFolder *folder,
                                                             GCancellable *cancellable,
                                                             GError **error);

Synchronizes a folder's summary with its backing store.

`folder` : | a CamelFolder
`cancellable` : | optional GCancellable object, or `NULL`
`error` : | return location for a GError, or `NULL`
Returns : | `TRUE` on success, `FALSE` on error

Since 3.0

### camel_folder_refresh_info ()

    void                camel_folder_refresh_info           (CamelFolder *folder,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

`folder` : |
`io_priority` : |
`cancellable` : |
`callback` : |
`user_data` : |

### camel_folder_refresh_info_finish ()

    gboolean            camel_folder_refresh_info_finish    (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             GError **error);

`folder` : |
`result` : |
`error` : |
Returns : |

### camel_folder_synchronize_sync ()

    gboolean            camel_folder_synchronize_sync       (CamelFolder *folder,
                                                             gboolean expunge,
                                                             GCancellable *cancellable,
                                                             GError **error);

Synchronizes any changes that have been made to `folder` to its backing store, optionally expunging deleted messages as well.

`folder` : | a CamelFolder
`expunge` : | whether to expunge after synchronizing
`cancellable` : | optional GCancellable object, or `NULL`
`error` : | return location for a GError, or `NULL`
Returns : | `TRUE` on success, `FALSE` on error

Since 3.0

### camel_folder_synchronize ()

    void                camel_folder_synchronize            (CamelFolder *folder,
                                                             gboolean expunge,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Synchronizes any changes that have been made to `folder` to its backing store asynchronously, optionally expunging deleted messages as well.

When the operation is finished, `callback` will be called. You can then call `camel_folder_synchronize_finish()` to get the result of the operation.

`folder` : | a CamelFolder
`expunge` : | whether to expunge after synchronizing
`io_priority` : | the I/O priority of the request
`cancellable` : | optional GCancellable object, or `NULL`
`callback` : | a GAsyncReadyCallback to call when the request is satisfied
`user_data` : | data to pass to the callback function

Since 3.0

### camel_folder_synchronize_finish ()

    gboolean            camel_folder_synchronize_finish     (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             GError **error);

Finishes the operation started with `camel_folder_synchronize()`.

`folder` : | a CamelFolder
`result` : | a GAsyncResult
`error` : | return location for a GError, or `NULL`
Returns : | `TRUE` on sucess, `FALSE` on error

Since 3.0

### camel_folder_synchronize_message_sync ()

    gboolean            camel_folder_synchronize_message_sync
                                                            (CamelFolder *folder,
                                                             const gchar *message_uid,
                                                             GCancellable *cancellable,
                                                             GError **error);

Ensure that a message identified by `message_uid` has been synchronized in `folder` so that calling `camel_folder_get_message()` on it later will work in offline mode.

`folder` : | a CamelFolder
`message_uid` : | a message UID
`cancellable` : | optional GCancellable object, or `NULL`
`error` : | return location for a GError, or `NULL`
Returns : | `TRUE` on success, `FALSE` on error

Since 3.0

### camel_folder_synchronize_message ()

    void                camel_folder_synchronize_message    (CamelFolder *folder,
                                                             const gchar *message_uid,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

`folder` : |
`message_uid` : |
`io_priority` : |
`cancellable` : |
`callback` : |
`user_data` : |

### camel_folder_synchronize_message_finish ()

    gboolean            camel_folder_synchronize_message_finish
                                                            (CamelFolder *folder,
                                                             GAsyncResult *result,
                                                             GError **error);

Finishes the operation started with `camel_folder_synchronize_message()`.

`folder` : | a CamelFolder
`result` : | a GAsyncResult
`error` : | return location for a GError, or `NULL`
Returns : | `TRUE` on success, `FALSE` on error

Since 3.0

### camel_folder_transfer_messages_to_sync ()

    gboolean            camel_folder_transfer_messages_to_sync
                                                            (CamelFolder *source,
                                                             GPtrArray *message_uids,
                                                             CamelFolder *destination,
                                                             gboolean delete_originals,
                                                             GPtrArray **transferred_uids,
                                                             GCancellable *cancellable,
                                                             GError **error);

Copies or moves messages from one folder to another. If the `source` and `destination` folders have the same parent_store, this may be more efficient than using `camel_folder_append_message_sync()`.

`source` : | the source CamelFolder
`message_uids` : | message UIDs in `source`
`destination` : | the destination CamelFolder
`delete_originals` : | whether or not to delete the original messages
`transferred_uids` : | if non-`NULL`, the UIDs of the resulting messages in `destination` will be stored here, if known.
`cancellable` : | optional GCancellable object, or `NULL`
`error` : | return location for a GError, or `NULL`
Returns : | `TRUE` on success, `FALSE` on failure

Since 3.0

### camel_folder_transfer_messages_to ()

    void                camel_folder_transfer_messages_to   (CamelFolder *source,
                                                             GPtrArray *message_uids,
                                                             CamelFolder *destination,
                                                             gboolean delete_originals,
                                                             gint io_priority,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Asynchronously copies or moves messages from one folder to another. If the `source` or `destination` folders have the same parent store, this may be more efficient than using `camel_folder_append_message()`.

When the operation is finished, `callback` will be called. You can then call `camel_folder_transfer_messages_to_finish()` to get the result of the operation.

`source` : | the source CamelFolder
`message_uids` : | message UIDs in `source`
`destination` : | the destination CamelFolder
`delete_originals` : | whether or not to delete the original messages
`io_priority` : | the I/O priority of the request
`cancellable` : | optional GCancellable object, or `NULL`
`callback` : | a GAsyncReadyCallback to call when the request is satisfied
`user_data` : | data to pass to the callback function

Since 3.0

### camel_folder_transfer_messages_to_finish ()

    gboolean            camel_folder_transfer_messages_to_finish
                                                            (CamelFolder *source,
                                                             GAsyncResult *result,
                                                             GPtrArray **transferred_uids,
                                                             GError **error);

Finishes the operation started with `camel_folder_transfer_messages_to()`.

`source` : | a CamelFolder
`result` : | a GAsyncResult
`transferred_uids` : | if non-`NULL`, the UIDs of the resulting messages in `destination` will be stored here, if known.
`error` : | return location for a GError, or `NULL`
Returns : | `TRUE` on success, `FALSE` on error

Since 3.0

### camel_folder_change_info_new ()

    CamelFolderChangeInfo * camel_folder_change_info_new    (void);

Create a new folder change info structure.

Change info structures are not MT-SAFE and must be locked for exclusive access externally.

Returns : | a new CamelFolderChangeInfo

### camel_folder_change_info_clear ()

    void                camel_folder_change_info_clear      (CamelFolderChangeInfo *info);

Empty out the change info; called after changes have been processed.

`info` : | a CamelFolderChangeInfo

### camel_folder_change_info_free ()

    void                camel_folder_change_info_free       (CamelFolderChangeInfo *info);

Free memory associated with the folder change info lists.

`info` : | a CamelFolderChangeInfo

### camel_folder_change_info_changed ()

    gboolean            camel_folder_change_info_changed    (CamelFolderChangeInfo *info);

Gets whether or not there have been any changes.

`info` : | a CamelFolderChangeInfo
Returns : | `TRUE` if the changeset contains any changes or `FALSE` otherwise

### camel_folder_change_info_add_source ()

    void                camel_folder_change_info_add_source (CamelFolderChangeInfo *info,
                                                             const gchar *uid);

Add a source uid for generating a changeset.

`info` : | a CamelFolderChangeInfo
`uid` : | a uid

### camel_folder_change_info_add_source_list ()

    void                camel_folder_change_info_add_source_list
                                                            (CamelFolderChangeInfo *info,
                                                             const GPtrArray *list);

Add a list of source uid's for generating a changeset.

`info` : | a CamelFolderChangeInfo
`list` : | a list of uids

### camel_folder_change_info_add_update ()

    void                camel_folder_change_info_add_update (CamelFolderChangeInfo *info,
                                                             const gchar *uid);

Add a uid from the updated list, used to generate a changeset diff.

`info` : | a CamelFolderChangeInfo
`uid` : | a uid

### camel_folder_change_info_add_update_list ()

    void                camel_folder_change_info_add_update_list
                                                            (CamelFolderChangeInfo *info,
                                                             const GPtrArray *list);

Add a list of uid's from the updated list.

`info` : | a CamelFolderChangeInfo
`list` : | a list of uids

### camel_folder_change_info_build_diff ()

    void                camel_folder_change_info_build_diff (CamelFolderChangeInfo *info);

Compare the source uid set to the updated uid set and generate the differences into the added and removed lists.

`info` : | a CamelFolderChangeInfo

### camel_folder_change_info_cat ()

    void                camel_folder_change_info_cat        (CamelFolderChangeInfo *info,
                                                             CamelFolderChangeInfo *src);

Concatenate one change info onto antoher. Can be used to copy them too.

`info` : | a CamelFolderChangeInfo to append to
`src` : | a CamelFolderChangeInfo to append from

### camel_folder_change_info_add_uid ()

    void                camel_folder_change_info_add_uid    (CamelFolderChangeInfo *info,
                                                             const gchar *uid);

Add a new uid to the changeinfo.

`info` : | a CamelFolderChangeInfo
`uid` : | a uid

### camel_folder_change_info_remove_uid ()

    void                camel_folder_change_info_remove_uid (CamelFolderChangeInfo *info,
                                                             const gchar *uid);

Add a uid to the removed uid list.

`info` : | a CamelFolderChangeInfo
`uid` : | a uid

### camel_folder_change_info_change_uid ()

    void                camel_folder_change_info_change_uid (CamelFolderChangeInfo *info,
                                                             const gchar *uid);

Add a uid to the changed uid list.

`info` : | a CamelFolderChangeInfo
`uid` : | a uid

### camel_folder_change_info_recent_uid ()

    void                camel_folder_change_info_recent_uid (CamelFolderChangeInfo *info,
                                                             const gchar *uid);

Add a recent uid to the changedinfo. This will also add the uid to the uid_filter array for potential filtering

`info` : | a CamelFolderChangeInfo
`uid` : | a uid

### enum CamelFolderLock

    typedef enum {
    	CAMEL_FOLDER_CHANGE_LOCK,
    	CAMEL_FOLDER_REC_LOCK
    } CamelFolderLock;

Since 2.32

### camel_folder_lock ()

    void                camel_folder_lock                   (CamelFolder *folder,
                                                             CamelFolderLock lock);

Locks folder's lock. Unlock it with `camel_folder_unlock()`.

`folder` : | a CamelFolder
`lock` : | lock type to lock

Since 2.32

### camel_folder_unlock ()

    void                camel_folder_unlock                 (CamelFolder *folder,
                                                             CamelFolderLock lock);

Unlocks folder's lock, previously locked with `camel_folder_lock()`.

`folder` : | a CamelFolder
`lock` : | lock type to unlock

Since 2.32

## Property Details

### The `"description"` property

      "description"              gchar*                : Read / Write / Construct

The folder's description.

Default value: NULL

### The `"display-name"` property

      "display-name"             gchar*                : Read / Write / Construct

The folder's display name.

Default value: NULL

### The `"full-name"` property

      "full-name"                gchar*                : Read / Write / Construct

The folder's fully qualified name.

Default value: NULL

### The `"parent-store"` property

      "parent-store"             CamelStore*           : Read / Write / Construct Only

The CamelStore to which the folder belongs.

## Signal Details

### The `"changed"` signal

    void                user_function                      (CamelFolder *folder,
                                                            gpointer     arg1,
                                                            gpointer     user_data)      : Run First

`folder` : | the CamelFolder which emitted the signal
`user_data` : | user data set when the signal handler was connected.

### The `"deleted"` signal

    void                user_function                      (CamelFolder *folder,
                                                            gpointer     user_data)      : Run First

`folder` : | the CamelFolder which emitted the signal
`user_data` : | user data set when the signal handler was connected.

### The `"renamed"` signal

    void                user_function                      (CamelFolder *folder,
                                                            gchar       *old_name,
                                                            gpointer     user_data)      : Run First

`folder` : | the CamelFolder which emitted the signal
`old_name` : | the previous folder name
`user_data` : | user data set when the signal handler was connected.