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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
 *
 * camel-folder.h: Abstract class for an email folder
 *
 * Authors: Bertrand Guiheneuf <bertrand@helixcode.com>
 *      Michael Zucchi <notzed@helixcode.com>
 *
 * Copyright 1999, 2000 Helix Code, Inc. (http://www.helixcode.com)
 *
 * This program is free software; you can redistribute it and/or 
 * modify it under the terms of the GNU General Public License as 
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

#ifndef CAMEL_FOLDER_H
#define CAMEL_FOLDER_H 1


#ifdef __cplusplus
extern "C" {
#pragma }
#endif /* __cplusplus }*/

#include <camel/camel-object.h>
#include <camel/camel-folder-summary.h>

#define CAMEL_FOLDER_TYPE     (camel_folder_get_type ())
#define CAMEL_FOLDER(obj)     (CAMEL_CHECK_CAST((obj), CAMEL_FOLDER_TYPE, CamelFolder))
#define CAMEL_FOLDER_CLASS(k) (CAMEL_CHECK_CLASS_CAST ((k), CAMEL_FOLDER_TYPE, CamelFolderClass))
#define CAMEL_IS_FOLDER(o)    (CAMEL_CHECK_TYPE((o), CAMEL_FOLDER_TYPE))

typedef struct _CamelFolderChangeInfo CamelFolderChangeInfo;

struct _CamelFolderChangeInfo {
    GPtrArray *uid_added;
    GPtrArray *uid_removed;
    GPtrArray *uid_changed;

    struct _CamelFolderChangeInfoPrivate *priv;
};

struct _CamelFolder
{
    CamelObject parent_object;

    struct _CamelFolderPrivate *priv;

    char *name;
    char *full_name;
    CamelStore *parent_store;
    CamelFolderSummary *summary;

    guint32 permanent_flags;
    gboolean has_summary_capability:1;
    gboolean has_search_capability:1;

};

typedef struct {
    CamelObjectClass parent_class;

    /* Virtual methods */   
    void   (*refresh_info) (CamelFolder *folder, CamelException *ex);

    void   (*sync) (CamelFolder *folder, gboolean expunge, 
            CamelException *ex);

    const char *  (*get_name)  (CamelFolder *folder);
    const char *  (*get_full_name)   (CamelFolder *folder);

    CamelStore *  (*get_parent_store) (CamelFolder *folder);

    void (*expunge)  (CamelFolder *folder, 
              CamelException *ex);

    int   (*get_message_count)   (CamelFolder *folder);

    int   (*get_unread_message_count) (CamelFolder *folder);

    void (*append_message)  (CamelFolder *folder, 
                 CamelMimeMessage *message,
                 const CamelMessageInfo *info,
                 CamelException *ex);
    
    guint32 (*get_permanent_flags) (CamelFolder *folder);
    guint32 (*get_message_flags)   (CamelFolder *folder,
                    const char *uid);
    void    (*set_message_flags)   (CamelFolder *folder,
                    const char *uid,
                    guint32 flags, guint32 set);

    gboolean (*get_message_user_flag) (CamelFolder *folder,
                       const char *uid,
                       const char *name);
    void     (*set_message_user_flag) (CamelFolder *folder,
                       const char *uid,
                       const char *name,
                       gboolean value);

    const char * (*get_message_user_tag) (CamelFolder *folder,
                          const char *uid,
                          const char *name);
    void     (*set_message_user_tag) (CamelFolder *folder,
                      const char *uid,
                      const char *name,
                      const char *value);

    CamelMimeMessage * (*get_message)  (CamelFolder *folder, 
                        const char *uid, 
                        CamelException *ex);

    GPtrArray * (*get_uids)       (CamelFolder *folder);
    void (*free_uids)             (CamelFolder *folder,
                       GPtrArray *array);

    GPtrArray * (*get_summary)    (CamelFolder *folder);
    void (*free_summary)          (CamelFolder *folder,
                       GPtrArray *summary);

    gboolean (*has_search_capability) (CamelFolder *folder);

    GPtrArray * (*search_by_expression) (CamelFolder *folder,
                         const char *expression,
                         CamelException *ex);

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

    CamelMessageInfo * (*get_message_info) (CamelFolder *, const char *uid);
    void (*free_message_info) (CamelFolder *, CamelMessageInfo *);

    void (*copy_message_to) (CamelFolder *source,
                 const char *uid,
                 CamelFolder *destination,
                 CamelException *ex);
    
    void (*move_message_to) (CamelFolder *source,
                 const char *uid,
                 CamelFolder *destination,
                 CamelException *ex);

    void (*freeze) (CamelFolder *folder);
    void (*thaw)   (CamelFolder *folder);
} CamelFolderClass;

/* Standard Camel function */
CamelType camel_folder_get_type (void);


/* public methods */
void               camel_folder_construct              (CamelFolder *folder,
                            CamelStore *parent_store,
                            const char *full_name,
                            const char *name);

void               camel_folder_refresh_info           (CamelFolder * folder, 
                            CamelException * ex);
void               camel_folder_sync                   (CamelFolder *folder, 
                            gboolean expunge, 
                            CamelException *ex);

CamelStore *       camel_folder_get_parent_store       (CamelFolder *folder);


/* delete operations */
void           camel_folder_expunge                (CamelFolder *folder, 
                            CamelException *ex);


/* folder name operations */
const char *      camel_folder_get_name                (CamelFolder *folder);
const char *      camel_folder_get_full_name           (CamelFolder *folder);


/* various properties accessors */
guint32        camel_folder_get_permanent_flags    (CamelFolder *folder);

guint32        camel_folder_get_message_flags      (CamelFolder *folder,
                            const char *uid);

void           camel_folder_set_message_flags      (CamelFolder *folder,
                            const char *uid,
                            guint32 flags,
                            guint32 set);

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

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

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



/* message manipulation */
void               camel_folder_append_message         (CamelFolder *folder, 
                            CamelMimeMessage *message,
                            const CamelMessageInfo *info,
                            CamelException *ex);


/* summary related operations */
gboolean           camel_folder_has_summary_capability (CamelFolder *folder);


int                camel_folder_get_message_count     (CamelFolder *folder);

int                camel_folder_get_unread_message_count (CamelFolder *folder);

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

/* uid based access operations */
CamelMimeMessage * camel_folder_get_message           (CamelFolder *folder, 
                               const char *uid, 
                               CamelException *ex);
#define camel_folder_delete_message(folder, uid) \
    camel_folder_set_message_flags (folder, uid, CAMEL_MESSAGE_DELETED, CAMEL_MESSAGE_DELETED)

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

/* search api */
gboolean           camel_folder_has_search_capability (CamelFolder *folder);
GPtrArray *    camel_folder_search_by_expression  (CamelFolder *folder,
                               const char *expression,
                               CamelException *ex);
void           camel_folder_search_free       (CamelFolder *folder, GPtrArray *);

/* summary info */
CamelMessageInfo *camel_folder_get_message_info     (CamelFolder *folder, const char *uid);
void          camel_folder_free_message_info    (CamelFolder *folder, CamelMessageInfo *info);

/* FIXME: copy-message-to is not required */
void               camel_folder_copy_message_to       (CamelFolder *source,
                               const char *uid,
                               CamelFolder *dest,
                               CamelException *ex);

void               camel_folder_move_message_to       (CamelFolder *source,
                               const char *uid,
                               CamelFolder *dest,
                               CamelException *ex);

/* stop/restart getting events */
void               camel_folder_freeze                (CamelFolder *folder);
void               camel_folder_thaw                  (CamelFolder *folder);

#if 0
/* lock/unlock at the thread level, NOTE: only used internally */
void           camel_folder_lock              (CamelFolder *folder);
void           camel_folder_unlock            (CamelFolder *folder);
#endif

/* For use by subclasses (for free_{uids,summary,subfolder_names}) */
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);

/* update functions for change info */
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);

/* for building diff's automatically */
void            camel_folder_change_info_add_source (CamelFolderChangeInfo *info, const char *uid);
void            camel_folder_change_info_add_source_list(CamelFolderChangeInfo *info, const GPtrArray *list);
void            camel_folder_change_info_add_update (CamelFolderChangeInfo *info, const char *uid);
void            camel_folder_change_info_add_update_list(CamelFolderChangeInfo *info, const GPtrArray *list);
void            camel_folder_change_info_build_diff (CamelFolderChangeInfo *info);

/* for manipulating diff's directly */
void            camel_folder_change_info_cat        (CamelFolderChangeInfo *info, CamelFolderChangeInfo *s);
void            camel_folder_change_info_add_uid    (CamelFolderChangeInfo *info, const char *uid);
void            camel_folder_change_info_remove_uid (CamelFolderChangeInfo *info, const char *uid);
void            camel_folder_change_info_change_uid (CamelFolderChangeInfo *info, const char *uid);

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* CAMEL_FOLDER_H */