src/folder.h

   1 /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
   2
   3 /*
   4  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   5  * Copyright (C) 1999-2007 Hiroyuki Yamamoto and the Claws Mail team
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  */
  21
  22 #ifndef __FOLDER_H__
  23 #define __FOLDER_H__
  24
  25 #include <glib.h>
  26 #include <time.h>
  27
  28 typedef struct _Folder          Folder;
  29 typedef struct _FolderClass     FolderClass;
  30
  31 typedef struct _FolderItem      FolderItem;
  32 typedef struct _FolderUpdateData        FolderUpdateData;
  33 typedef struct _FolderItemUpdateData    FolderItemUpdateData;
  34 typedef struct _PersistPrefs            PersistPrefs;
  35
  36 #define FOLDER(obj)             ((Folder *)obj)
  37 #define FOLDER_CLASS(obj)       (FOLDER(obj)->klass)
  38 #define FOLDER_TYPE(obj)        (FOLDER(obj)->klass->type)
  39
  40 #define FOLDER_IS_LOCAL(obj)    (FOLDER_TYPE(obj) == F_MH      || \
  41                                  FOLDER_TYPE(obj) == F_MBOX    || \
  42                                  FOLDER_TYPE(obj) == F_MAILDIR)
  43
  44 #define FOLDER_ITEM(obj)        ((FolderItem *)obj)
  45
  46 #define FOLDER_UPDATE_HOOKLIST "folder_update"
  47 #define FOLDER_ITEM_UPDATE_HOOKLIST "folder_item_update"
  48
  49 typedef enum
  50 {
  51         F_MH,
  52         F_MBOX,
  53         F_MAILDIR,
  54         F_IMAP,
  55         F_NEWS,
  56         F_UNKNOWN
  57 } FolderType;
  58
  59 typedef enum
  60 {
  61         F_NORMAL,
  62         F_INBOX,
  63         F_OUTBOX,
  64         F_DRAFT,
  65         F_QUEUE,
  66         F_TRASH
  67 } SpecialFolderItemType;
  68
  69 typedef enum
  70 {
  71         SORT_BY_NONE,
  72         SORT_BY_NUMBER,
  73         SORT_BY_SIZE,
  74         SORT_BY_DATE,
  75         SORT_BY_FROM,
  76         SORT_BY_SUBJECT,
  77         SORT_BY_SCORE,
  78         SORT_BY_LABEL,
  79         SORT_BY_MARK,
  80         SORT_BY_STATUS,
  81         SORT_BY_MIME,
  82         SORT_BY_TO,
  83         SORT_BY_LOCKED
  84 } FolderSortKey;
  85
  86 typedef enum
  87 {
  88         SORT_ASCENDING,
  89         SORT_DESCENDING
  90 } FolderSortType;
  91
  92 typedef enum
  93 {
  94         F_MOVE_OK = 0,
  95         F_MOVE_FAILED_DEST_IS_PARENT = -1,
  96         F_MOVE_FAILED_DEST_IS_CHILD = -2,
  97         F_MOVE_FAILED_DEST_OUTSIDE_MAILBOX = -3,
  98         F_MOVE_FAILED = -4
  99 } FolderItemMoveResult;
 100
 101 typedef enum
 102 {
 103         FOLDER_ADD_FOLDER               = 1 << 0,
 104         FOLDER_REMOVE_FOLDER            = 1 << 1,
 105         FOLDER_TREE_CHANGED             = 1 << 2,
 106         FOLDER_ADD_FOLDERITEM           = 1 << 3,
 107         FOLDER_REMOVE_FOLDERITEM        = 1 << 4,
 108         FOLDER_RENAME_FOLDERITEM        = 1 << 5
 109 } FolderUpdateFlags;
 110
 111 typedef enum
 112 {
 113         F_ITEM_UPDATE_MSGCNT = 1 << 0,
 114         F_ITEM_UPDATE_CONTENT = 1 << 1,
 115         F_ITEM_UPDATE_ADDMSG = 1 << 2,
 116         F_ITEM_UPDATE_REMOVEMSG = 1 << 3,
 117         F_ITEM_UPDATE_NAME = 1 << 4
 118 } FolderItemUpdateFlags;
 119
 120 typedef void (*FolderUIFunc)            (Folder         *folder,
 121                                          FolderItem     *item,
 122                                          gpointer        data);
 123 typedef void (*FolderDestroyNotify)     (Folder         *folder,
 124                                          FolderItem     *item,
 125                                          gpointer        data);
 126 typedef void (*FolderItemFunc)  (FolderItem     *item,
 127                                          gpointer        data);
 128
 129
 130 #include "folder_item_prefs.h"
 131
 132 #include "procmsg.h"
 133 #include "msgcache.h"
 134 #include "xml.h"
 135 #include "prefs_account.h"
 136
 137 struct _Folder
 138 {
 139         FolderClass *klass;
 140
 141         gchar *name;
 142         PrefsAccount *account;
 143         guint sort;
 144
 145         FolderItem *inbox;
 146         FolderItem *outbox;
 147         FolderItem *draft;
 148         FolderItem *queue;
 149         FolderItem *trash;
 150
 151         FolderUIFunc ui_func;
 152         gpointer     ui_func_data;
 153
 154         GNode *node;
 155
 156         gpointer data;
 157
 158         GHashTable *newsart;
 159 };
 160
 161 struct _FolderClass
 162 {
 163         /**
 164          * A numeric identifier for the FolderClass. Will be removed in the future
 165          */
 166         FolderType  type;
 167         /**
 168          * A string identifier for the FolderClass. Currently used in folderlist.xml.
 169          * Should be lowercase.
 170          */
 171         gchar      *idstr;
 172         /**
 173          * A string for the User Interface that identifies the FolderClass to the
 174          * user. Can be upper and lowercase unlike the idstr.
 175          */
 176         gchar      *uistr;
 177
 178         /* virtual functions */
 179
 180         /* Folder funtions */
 181         /**
 182          * Create a new \c Folder of this \c FolderClass.
 183          *
 184          * \param name The name of the new Folder
 185          * \param path The path of the new Folder
 186          * \return The new \c Folder, or \c NULL when creating the \c Folder
 187          *         failed
 188          */
 189         Folder          *(*new_folder)          (const gchar    *name,
 190                                                  const gchar    *path);
 191         /**
 192          * Destroy a \c Folder of this \c FolderClass, frees all resources
 193          * allocated by the Folder
 194          *
 195          * \param folder The \c Folder that should be destroyed.
 196          */
 197         void            (*destroy_folder)       (Folder         *folder);
 198         /**
 199          * Set the Folder's internal attributes from an \c XMLTag. Also sets the
 200          * parameters of the root-FolderItem of the \c Folder. If \c NULL
 201          * the default function of the basic \¢ FolderClass is used, so it
 202          * must not be \c NULL if one of the parent \c FolderClasses has a \c set_xml
 203          * function. In that case the parent \c FolderClass' \c set_xml function
 204          * can be used or it has to be called with the \c folder and \c tag by
 205          * the implementation.
 206          *
 207          * \param folder The \c Folder which's attributes should be updated
 208          * \param tag The \c XMLTag containing the \c XMLAttrs for the attributes
 209          */
 210         void             (*set_xml)             (Folder         *folder,
 211                                                  XMLTag         *tag);
 212         /**
 213          * Get an \c XMLTag for the attributes of the \c Folder and the root-FolderItem
 214          * of the \c Folder. If \c NULL the default implementation for the basic
 215          * FolderClass will be used, so it must not be \c NULL if one of the
 216          * parent \c FolderClasses has it's own implementation for \c get_xml.
 217          * In that case the parent FolderClass' \c get_xml function can be
 218          * used or the \c XMLTag has to be fetched from the parent's \c get_xml
 219          * function and then the \c FolderClass specific attributes can be
 220          * added to it.
 221          *
 222          * \param Folder The \c Folder which's attributes should be set in the
 223          *               \c XMLTag's \c XMLAttrs
 224          * \return XMLTag An \c XMLTag with \c XMLAttrs containing the \c Folder's
 225          *                attributes.
 226          */
 227         XMLTag          *(*get_xml)             (Folder         *folder);
 228         /**
 229          * Rebuild the folder tree from the folder's data
 230          * \todo New implementations of MH and IMAP are actually syncronizing
 231          *       the tree with the folder by reusing the old \c FolderItems.
 232          *       Claws still destroys the old tree before calling this function.
 233          *
 234          * \param folder The folder which's tree should be rebuild
 235          * \return 0 on success, a negative number otherwise
 236          */
 237         gint            (*scan_tree)            (Folder         *folder);
 238
 239         gint            (*create_tree)          (Folder         *folder);
 240
 241         /* FolderItem functions */
 242         /**
 243          * Create a new \c FolderItem structure for the \c FolderClass.
 244          * \c FolderClasses can have their own \c FolderItem structure with
 245          * extra attributes.
 246          *
 247          * \param folder The \c Folder for that a \c FolderItem should be
 248          *               created
 249          * \return The new \c FolderItem or NULL in case of an error
 250          */
 251         FolderItem      *(*item_new)            (Folder         *folder);
 252         /**
 253          * Destroy a \c FolderItem from this \c FolderClass. The \c FolderClass
 254          * has to free all private resources used by the \c FolderItem.
 255          *
 256          * \param folder The \c Folder of the \c FolderItem
 257          * \param item The \c FolderItem that should be destroyed
 258          */
 259         void             (*item_destroy)        (Folder         *folder,
 260                                                  FolderItem     *item);
 261         /**
 262          * Set the \c FolderItem's internal attributes from an \c XMLTag. If
 263          * \c NULL the default function of the basic \c FolderClass is used, so it
 264          * must not be \c NULL if one of the parent \c FolderClasses has a \c item_set_xml
 265          * function. In that case the parent \c FolderClass' \c item_set_xml function
 266          * can be used or it has to be called with the \c folder, \c item and \c tag by
 267          * the implementation.
 268          *
 269          * \param folder The \c Folder of the \c FolderItem
 270          * \param item The \c FolderItems which's attributes should be set
 271          * \param tag The \c XMLTag with \c XMLAttrs for the \c FolderItem's
 272          *            attributes
 273          */
 274         void             (*item_set_xml)        (Folder         *folder,
 275                                                  FolderItem     *item,
 276                                                  XMLTag         *tag);
 277         /**
 278          * Get an \c XMLTag for the attributes of the \c FolderItem If \c NULL
 279          * the default implementation for the basic \c FolderClass will be used,
 280          * so it must not be \c NULL if one of the parent \c FolderClasses has
 281          * it's own implementation for \c item_get_xml. In that case the parent
 282          * FolderClass' \c item_get_xml function can be used or the \c XMLTag
 283          * has to be fetched from the parent's \c item_get_xml function and
 284          * then the \c FolderClass specific attributes can be added to it.
 285          *
 286          * \param folder The \c Folder of the \c FolderItem
 287          * \parem item The \c FolderItem which's attributes should be set in
 288          *             the \c XMLTag's \c XMLAttrs
 289          * \return An \c XMLTag with \c XMLAttrs containing the \c FolderItem's
 290          *         attributes.
 291          */
 292         XMLTag          *(*item_get_xml)        (Folder         *folder,
 293                                                  FolderItem     *item);
 294         /**
 295          * Get a local path for the \c FolderItem where Sylpheed can save
 296          * it's cache data. For local directory based folders this can be the
 297          * real path. For other folders it can be the local cache directory.
 298          *
 299          * \param folder The \c Folder of the \c FolderItem
 300          * \param item The \c FolderItem for that a path should be returned
 301          * \return A path for the \c FolderItem
 302          */
 303         gchar           *(*item_get_path)       (Folder         *folder,
 304                                                  FolderItem     *item);
 305         /**
 306          * Create a new \c FolderItem. The function must use folder_item_append
 307          * to add the new \c FolderItem to the folder tree
 308          *
 309          * \param folder The \c Folder in which a new \c FolderItem should be
 310          *               created
 311          * \param parent \c The parent \c FolderItem for the new \c FolderItem
 312          * \parem name The name for the new \c FolderItem
 313          * \return The new \c FolderItem
 314          */
 315         FolderItem      *(*create_folder)       (Folder         *folder,
 316                                                  FolderItem     *parent,
 317                                                  const gchar    *name);
 318         /**
 319          * Rename a \c FolderItem
 320          *
 321          * \param folder The \c Folder of the \c FolderItem that should be
 322          *               renamed
 323          * \param item The \c FolderItem that should be renamed
 324          * \param name The new name of the \c FolderItem
 325          * \return 0 on success, a negative number otherwise
 326          */
 327         gint             (*rename_folder)       (Folder         *folder,
 328                                                  FolderItem     *item,
 329                                                  const gchar    *name);
 330         /**
 331          * Remove a \c FolderItem from the \c Folder
 332          *
 333          * \param folder The \c Folder that contains the \c FolderItem
 334          * \param item The \c FolderItem that should be removed
 335          * \return 0 on sucess, a negative number otherwise
 336          */
 337         gint             (*remove_folder)       (Folder         *folder,
 338                                                  FolderItem     *item);
 339         /**
 340          * Close a \c FolderItem. Called when the user deselects a
 341          * \c FolderItem.
 342          *
 343          * \attention In Sylpheed-Main operations can only be done on the
 344          *            \c FolderItem that is opened in the SummaryView. This
 345          *            \c FolderItem will be closed when you select a new
 346          *            \c FolderItem in the FolderView. In Claws operations can
 347          *            be done any time on any folder and you should not expect
 348          *            that all \c FolderItems get closed after operations
 349          *
 350          * \param folder The \c Folder that contains the \c FolderItem
 351          * \param item The \c FolderItem that should be closed
 352          * \return 0 on success, a negative number otherwise
 353          */
 354         gint             (*close)               (Folder         *folder,
 355                                                  FolderItem     *item);
 356         /**
 357          * Get the list of message numbers for the messages in the \c FolderItem
 358          *
 359          * \param folder The \c Folder that contains the \c FolderItem
 360          * \param item The \c FolderItem for which the message numbers should
 361          *             be fetched
 362          * \param list Pointer to a GSList where message numbers have to be
 363          *             added. Because of the implementation of the GSList that
 364          *             changes the pointer of the GSList itself when the first
 365          *             item is added this is a pointer to a pointer to a
 366          *             GSList structure. Use *item = g_slist_...(*item, ...)
 367          *             operations to modify the list.
 368          * \param old_uids_valid In some \c Folders the old UIDs can be invalid.
 369          *                       Set this pointer to a gboolean to TRUE if the
 370          *                       old UIDs are still valid, otherwise set it to
 371          *                       FALSE and the folder system will discard it's
 372          *                       cache data of the previously know UIDs
 373          * \return The number of message numbers add to the list on success,
 374          *         a negative number otherwise.
 375          */
 376         gint             (*get_num_list)        (Folder         *folder,
 377                                                  FolderItem     *item,
 378                                                  GSList        **list,
 379                                                  gboolean       *old_uids_valid);
 380         /**
 381          * Tell the folder system if a \c FolderItem should be scanned
 382          * (cache data syncronized with the folder content) when it is required
 383          * because the \c FolderItem's content changed. If NULL the folder
 384          * system will not do automatic scanning of \c FolderItems
 385          *
 386          * \param folder The \c Folder that contains the \c FolderItem
 387          * \param item The \c FolderItem which's content should be checked
 388          * \return TRUE if the \c FolderItem should be scanned, FALSE otherwise
 389          */
 390         gboolean        (*scan_required)        (Folder         *folder,
 391                                                  FolderItem     *item);
 392
 393         /* Message functions */
 394         /**
 395          * Get a MsgInfo for a message in a \c FolderItem
 396          *
 397          * \param folder The \c Folder containing the message
 398          * \param item The \c FolderItem containing the message
 399          * \param num The message number of the message
 400          * \return A pointer to a \c MsgInfo decribing the message or \c
 401          *         NULL in case of an error
 402          */
 403         MsgInfo         *(*get_msginfo)         (Folder         *folder,
 404                                                  FolderItem     *item,
 405                                                  gint            num);
 406         /**
 407          * Get \c MsgInfos for a list of message numbers
 408          *
 409          * \param folder The \c Folder containing the message
 410          * \param item The \c FolderItem containing the message
 411          * \param msgnum_list A list of message numbers for which the
 412          *                    \c MsgInfos should be fetched
 413          * \return A list of \c MsgInfos for the messages in the \c msgnum_list
 414          *         that really exist. Messages that are not found can simply
 415          *         be left out.
 416          */
 417         MsgInfoList     *(*get_msginfos)        (Folder         *folder,
 418                                                  FolderItem     *item,
 419                                                  MsgNumberList  *msgnum_list);
 420         /**
 421          * Get the filename for a message. This can either be the real message
 422          * file for local folders or a temporary file for remote folders.
 423          *
 424          * \param folder The \c Folder containing the message
 425          * \param item The \c FolderItem containing the message
 426          * \param num The message number of the message
 427          * \return A string with the filename of the message file. The returned
 428          *         string has to be freed with \c g_free(). If message is not
 429          *         available return NULL.
 430          */
 431         gchar           *(*fetch_msg)           (Folder         *folder,
 432                                                  FolderItem     *item,
 433                                                  gint            num);
 434         gchar           *(*fetch_msg_full)      (Folder         *folder,
 435                                                  FolderItem     *item,
 436                                                  gint            num,
 437                                                  gboolean        headers,
 438                                                  gboolean        body);
 439         /**
 440          * Add a single message file to a folder with the given flags (if
 441          * flag handling is supported by the folder)
 442          *
 443          * \param folder The target \c Folder for the message
 444          * \param dest the target \c FolderItem for the message
 445          * \param file The file that contains the message
 446          * \param flags The flags the new message should have in the folder
 447          * \return 0 on success, a negative number otherwise
 448          */
 449         gint            (*add_msg)              (Folder         *folder,
 450                                                  FolderItem     *dest,
 451                                                  const gchar    *file,
 452                                                  MsgFlags       *flags);
 453         /**
 454          * Add multiple messages to a \c FolderItem. If NULL the folder
 455          * system will add messages with \c add_msg one by one
 456          *
 457          * \param folder The target \c Folder for the messages
 458          * \param dest the target \c FolderItem for the messages
 459          * \param file_list A list of \c MsgFileInfos which contain the
 460          *                  filenames and flags for the new messages
 461          * \param relation Insert tuples of (MsgFileInfo, new message number) to
 462          *                 provide feedback for the folder system which new
 463          *                 message number a \c MsgFileInfo got in dest. Insert
 464          *                 0 if the new message number is unknown.
 465          */
 466         gint            (*add_msgs)             (Folder         *folder,
 467                                                  FolderItem     *dest,
 468                                                  GSList         *file_list,
 469                                                  GRelation      *relation);
 470         /**
 471          * Copy a message to a FolderItem
 472          *
 473          * \param folder The \c Folder of the destination FolderItem
 474          * \param dest The destination \c FolderItem for the message
 475          * \param msginfo The message that should be copied
 476          * \return The message number the copied message got, 0 if it is
 477          *         unknown because message numbers are assigned by an external
 478          *         system and not available after copying or a negative number
 479          *         if an error occuried
 480          */
 481         gint            (*copy_msg)             (Folder         *folder,
 482                                                  FolderItem     *dest,
 483                                                  MsgInfo        *msginfo);
 484         /**
 485          * Copy multiple messages to a \c FolderItem. If \c NULL the folder
 486          * system will use \c copy_msg to copy messages one by one.
 487          *
 488          * \param folder The \c Folder of the destination FolderItem
 489          * \param dest The destination \c FolderItem for the message
 490          * \param msglist A list of \c MsgInfos which should be copied to dest
 491          * \param relation Insert tuples of (MsgInfo, new message number) to
 492          *                 provide feedback for the folder system which new
 493          *                 message number a \c MsgInfo got in dest. Insert
 494          *                 0 if the new message number is unknown.
 495          * \return 0 on success, a negative number otherwise
 496          */
 497         gint            (*copy_msgs)            (Folder         *folder,
 498                                                  FolderItem     *dest,
 499                                                  MsgInfoList    *msglist,
 500                                                  GRelation      *relation);
 501         /**
 502          * Remove a message from a \c FolderItem.
 503          *
 504          * \param folder The \c Folder of the message
 505          * \param item The \c FolderItem containing the message
 506          * \param num The message number of the message
 507          * \return 0 on success, a negative number otherwise
 508          */
 509         gint            (*remove_msg)           (Folder         *folder,
 510                                                  FolderItem     *item,
 511                                                  gint            num);
 512         gint            (*remove_msgs)          (Folder         *folder,
 513                                                  FolderItem     *item,
 514                                                  MsgInfoList    *msglist,
 515                                                  GRelation      *relation);
 516         /**
 517          * Remove all messages in a \ c FolderItem
 518          *
 519          * \param folder The \c Folder of the \c FolderItem
 520          * \param item The \FolderItem which's messages should be deleted
 521          * \return 0 on succes, a negative number otherwise
 522          */
 523         gint            (*remove_all_msg)       (Folder         *folder,
 524                                                  FolderItem     *item);
 525         /**
 526          * Check if a message has been modified by someone else
 527          *
 528          * \param folder The \c Folder of the message
 529          * \param item The \c FolderItem containing the message
 530          * \param msginfo The \c MsgInfo for the message that should be checked
 531          * \return \c TRUE if the message was modified, \c FALSE otherwise
 532          */
 533         gboolean        (*is_msg_changed)       (Folder         *folder,
 534                                                  FolderItem     *item,
 535                                                  MsgInfo        *msginfo);
 536         /**
 537          * Update a message's flags in the folder data. If NULL only the
 538          * internal flag management will be used. The function has to set
 539          * \c msginfo->flags.perm_flags. It does not have to set the flags
 540          * that it got as \c newflags. If a flag can not be set in this
 541          * \c FolderClass the function can refuse to set it. Flags that are not
 542          * supported by the \c FolderClass should not be refused. They will be
 543          * managed by the internal cache in this case.
 544          *
 545          * \param folder The \c Folder of the message
 546          * \param item The \c FolderItem of the message
 547          * \param msginfo The \c MsgInfo for the message which's flags should be
 548          *                updated
 549          * \param newflags The flags the message should get
 550          */
 551         void            (*change_flags)         (Folder         *folder,
 552                                                  FolderItem     *item,
 553                                                  MsgInfo        *msginfo,
 554                                                  MsgPermFlags    newflags);
 555         /**
 556          * Get the flags for a list of messages. Flags that are not supported
 557          * by the folder should be preserved. They can be copied from
 558          * \c msginfo->flags.perm_flags
 559          *
 560          * \param folder The \c Folder of the messages
 561          * \param item The \c FolderItem of the messages
 562          * \param msglist The list of \c MsgInfos for which the flags should
 563          *                   be returned
 564          * \param msgflags A \c GRelation for tuples of (MsgInfo, new permanent
 565          *        flags for MsgInfo). Add tuples for the messages in msglist
 566          * \return 0 on success, a negative number otherwise
 567          */
 568         gint            (*get_flags)            (Folder         *folder,
 569                                                  FolderItem     *item,
 570                                                  MsgInfoList    *msglist,
 571                                                  GRelation      *msgflags);
 572
 573         /* Sets batch mode for a FolderItem. It means that numerous flags updates
 574          * could follow, and the FolderClass implementation can cache them in order
 575          * to process them later when set_false will be called again with the
 576          * batch parameter set to FALSE.
 577          */
 578         void            (*set_batch)            (Folder         *folder,
 579                                                  FolderItem     *item,
 580                                                  gboolean        batch);
 581         /* Called when switching offline or asking for synchronisation. the imple
 582          * mentation should do what's necessary to be able to read mails present
 583          * in the FolderItem at this time with no network connectivity.
 584          */
 585         void            (*synchronise)          (FolderItem     *item);
 586
 587         /* Passed from claws-mail --subscribe scheme://uri. Implementations
 588          * should check if they handle this type of URI, and return TRUE in this
 589          * case after having subscribed it.
 590          */
 591         gboolean        (*subscribe)            (Folder         *folder,
 592                                                  const gchar    *uri);
 593
 594         /* Gets the preferred sort key and type for a folderclass. */
 595         void            (*get_sort_type)        (Folder         *folder,
 596                                                  FolderSortKey  *sort_key,
 597                                                  FolderSortType *sort_type);
 598
 599         /* Copies internal FolderItem data from one folderItem to another. Used
 600          * when moving folders (this move is in reality a folder creation, content
 601          * move, folder delettion).
 602          */
 603         void            (*copy_private_data)    (Folder         *folder,
 604                                                  FolderItem     *src,
 605                                                  FolderItem     *dest);
 606 };
 607
 608 struct _FolderItem
 609 {
 610         SpecialFolderItemType stype;
 611
 612         gchar *name; /* UTF-8 */
 613         gchar *path; /* UTF-8 */
 614
 615         time_t mtime;
 616
 617         gint new_msgs;
 618         gint unread_msgs;
 619         gint total_msgs;
 620         gint unreadmarked_msgs;
 621         gint marked_msgs;
 622
 623         gint order;
 624
 625         gint last_num;
 626
 627         MsgCache *cache;
 628
 629         /* special flags */
 630         guint no_sub         : 1; /* no child allowed?    */
 631         guint no_select      : 1; /* not selectable?      */
 632         guint collapsed      : 1; /* collapsed item       */
 633         guint thread_collapsed      : 1; /* collapsed item       */
 634         guint threaded       : 1; /* threaded folder view */
 635         guint hide_read_msgs : 1; /* hide read messages   */
 636         guint ret_rcpt       : 1; /* return receipt       */
 637         guint search_match   : 1;
 638
 639         gint op_count;
 640         guint opened         : 1; /* opened by summary view */
 641         FolderItemUpdateFlags update_flags; /* folderview for this folder should be updated */
 642
 643         FolderSortKey sort_key;
 644         FolderSortType sort_type;
 645
 646         GNode *node;
 647
 648         Folder *folder;
 649
 650         PrefsAccount *account;
 651
 652         gboolean apply_sub;
 653
 654         GSList *mark_queue;
 655
 656         gpointer data;
 657
 658         FolderItemPrefs * prefs;
 659
 660         /* for faster search of special parents */
 661         SpecialFolderItemType parent_stype;
 662         gboolean processing_pending;
 663         gboolean scanning;
 664         guint last_seen;
 665 };
 666
 667 struct _PersistPrefs
 668 {
 669         FolderSortKey   sort_key;
 670         FolderSortType  sort_type;
 671         guint           collapsed       : 1;
 672         guint           thread_collapsed        : 1;
 673         guint           threaded        : 1;
 674         guint           hide_read_msgs  : 1; /* CLAWS */
 675         guint           ret_rcpt        : 1; /* CLAWS */
 676 };
 677
 678 struct _FolderUpdateData
 679 {
 680         Folder                  *folder;
 681         FolderUpdateFlags        update_flags;
 682         FolderItem              *item;
 683 };
 684
 685 struct _FolderItemUpdateData
 686 {
 687         FolderItem              *item;
 688         FolderItemUpdateFlags    update_flags;
 689         MsgInfo                 *msg;
 690 };
 691
 692 void        folder_system_init          (void);
 693 void        folder_register_class       (FolderClass    *klass);
 694 void        folder_unregister_class     (FolderClass    *klass);
 695 Folder     *folder_new                  (FolderClass    *type,
 696                                          const gchar    *name,
 697                                          const gchar    *path);
 698 void        folder_init                 (Folder         *folder,
 699                                          const gchar    *name);
 700
 701 void        folder_destroy              (Folder         *folder);
 702
 703 void        folder_set_xml              (Folder          *folder,
 704                                          XMLTag          *tag);
 705 XMLTag     *folder_get_xml              (Folder          *folder);
 706
 707 FolderItem *folder_item_new             (Folder         *folder,
 708                                          const gchar    *name,
 709                                          const gchar    *path);
 710 void        folder_item_append          (FolderItem     *parent,
 711                                          FolderItem     *item);
 712 void        folder_item_remove          (FolderItem     *item);
 713 void        folder_item_remove_children (FolderItem     *item);
 714 void        folder_item_destroy         (FolderItem     *item);
 715 FolderItem *folder_item_parent          (FolderItem     *item);
 716
 717 void        folder_item_set_xml         (Folder          *folder,
 718                                          FolderItem      *item,
 719                                          XMLTag          *tag);
 720 XMLTag     *folder_item_get_xml         (Folder          *folder,
 721                                          FolderItem      *item);
 722
 723 void        folder_set_ui_func  (Folder         *folder,
 724                                  FolderUIFunc    func,
 725                                  gpointer        data);
 726 void        folder_set_name     (Folder         *folder,
 727                                  const gchar    *name);
 728 void        folder_set_sort     (Folder         *folder,
 729                                  guint           sort);
 730 void        folder_tree_destroy (Folder         *folder);
 731
 732 void   folder_add               (Folder         *folder);
 733 void   folder_remove            (Folder         *folder);
 734
 735 GList *folder_get_list          (void);
 736 gint   folder_read_list         (void);
 737 void   folder_write_list        (void);
 738 void   folder_scan_tree         (Folder *folder, gboolean rebuild);
 739 void   folder_fast_scan_tree    (Folder *folder);
 740 FolderItem *folder_create_folder(FolderItem     *parent, const gchar *name);
 741 gint   folder_item_rename       (FolderItem *item, gchar *newname);
 742 void   folder_update_op_count           (void);
 743 void   folder_func_to_all_folders       (FolderItemFunc function,
 744                                          gpointer data);
 745 void folder_count_total_msgs(guint *new_msgs, guint *unread_msgs,
 746                              guint *unreadmarked_msgs, guint *marked_msgs,
 747                              guint *total_msgs);
 748 gchar *folder_get_status        (GPtrArray      *folders,
 749                                  gboolean        full);
 750
 751 Folder     *folder_find_from_path               (const gchar    *path);
 752 Folder     *folder_find_from_name               (const gchar    *name,
 753                                                  FolderClass    *klass);
 754 FolderItem *folder_find_item_from_path          (const gchar    *path);
 755 FolderClass *folder_get_class_from_string       (const gchar    *str);
 756 FolderItem *folder_find_child_item_by_name      (FolderItem     *item,
 757                                                  const gchar    *name);
 758 gchar      *folder_item_get_identifier          (FolderItem     *item);
 759 FolderItem *folder_find_item_from_identifier    (const gchar    *identifier);
 760 gchar      *folder_item_get_name                (FolderItem     *item);
 761
 762 FolderItem *folder_get_default_inbox    (void);
 763 FolderItem *folder_get_default_inbox_for_class(FolderType type);
 764 FolderItem *folder_get_default_outbox   (void);
 765 FolderItem *folder_get_default_draft    (void);
 766 FolderItem *folder_get_default_queue    (void);
 767 FolderItem *folder_get_default_trash    (void);
 768 FolderItem *folder_get_default_processing (void);
 769 void folder_set_missing_folders         (void);
 770 void folder_unref_account_all           (PrefsAccount   *account);
 771
 772 /* return value is locale encoded file name */
 773 gchar *folder_item_get_path             (FolderItem     *item);
 774
 775 gint   folder_item_open                 (FolderItem     *item);
 776 gint   folder_item_close                (FolderItem     *item);
 777 gint   folder_item_scan                 (FolderItem     *item);
 778 gint   folder_item_scan_full            (FolderItem     *item,
 779                                          gboolean        filtering);
 780 gint   folder_item_syncronize_flags     (FolderItem     *item);
 781 void   folder_item_scan_foreach         (GHashTable     *table);
 782 MsgInfo *folder_item_get_msginfo        (FolderItem     *item,
 783                                          gint            num);
 784 MsgInfo *folder_item_get_msginfo_by_msgid(FolderItem    *item,
 785                                          const gchar    *msgid);
 786 GSList *folder_item_get_msg_list        (FolderItem     *item);
 787 /* return value is locale charset */
 788 gchar *folder_item_fetch_msg            (FolderItem     *item,
 789                                          gint            num);
 790 gchar *folder_item_fetch_msg_full       (FolderItem     *item,
 791                                          gint            num,
 792                                          gboolean        get_headers,
 793                                          gboolean        get_body);
 794 gint   folder_item_fetch_all_msg        (FolderItem     *item);
 795 gint   folder_item_add_msg              (FolderItem     *dest,
 796                                          const gchar    *file,
 797                                          MsgFlags       *flags,
 798                                          gboolean        remove_source);
 799 gint   folder_item_add_msgs             (FolderItem     *dest,
 800                                          GSList         *file_list,
 801                                          gboolean        remove_source);
 802 gint   folder_item_move_to              (FolderItem     *src,
 803                                          FolderItem     *dest,
 804                                          FolderItem    **new_item,
 805                                          gboolean        copy);
 806 gint   folder_item_move_msg             (FolderItem     *dest,
 807                                          MsgInfo        *msginfo);
 808 gint   folder_item_move_msgs            (FolderItem     *dest,
 809                                          GSList         *msglist);
 810 gint   folder_item_copy_msg             (FolderItem     *dest,
 811                                          MsgInfo        *msginfo);
 812 gint   folder_item_copy_msgs            (FolderItem     *dest,
 813                                          GSList         *msglist);
 814 gint   folder_item_remove_msg           (FolderItem     *item,
 815                                          gint            num);
 816 gint   folder_item_remove_msgs          (FolderItem     *item,
 817                                          GSList         *msglist);
 818 gint   folder_item_remove_all_msg       (FolderItem     *item);
 819 void    folder_item_change_msg_flags    (FolderItem     *item,
 820                                          MsgInfo        *msginfo,
 821                                          MsgPermFlags    newflags);
 822 gboolean folder_item_is_msg_changed     (FolderItem     *item,
 823                                          MsgInfo        *msginfo);
 824 /* return value is locale chaset */
 825 gchar * folder_item_get_identifier      (FolderItem * item);
 826
 827 void folder_clean_cache_memory          (FolderItem *protected_item);
 828 void folder_clean_cache_memory_force    (void);
 829 void folder_item_write_cache            (FolderItem *item);
 830 void folder_item_set_default_flags      (FolderItem *dest, MsgFlags *flags);
 831
 832 void folder_item_apply_processing       (FolderItem *item);
 833
 834 void folder_item_update                 (FolderItem *item,
 835                                          FolderItemUpdateFlags update_flags);
 836 void folder_item_update_recursive       (FolderItem *item,
 837                                          FolderItemUpdateFlags update_flags);
 838 void folder_item_update_freeze          (void);
 839 void folder_item_update_thaw            (void);
 840 void folder_item_set_batch              (FolderItem *item, gboolean batch);
 841 gboolean folder_has_parent_of_type      (FolderItem *item, SpecialFolderItemType type);
 842 void folder_synchronise                 (Folder *folder);
 843 gboolean folder_want_synchronise        (Folder *folder);
 844 void folder_item_process_open           (FolderItem *item,
 845                                          void (*before_proc_func)(gpointer data),
 846                                          void (*after_proc_func)(gpointer data),
 847                                          gpointer data);
 848 gboolean folder_subscribe               (const gchar *uri);
 849 gboolean folder_have_mailbox            (void);
 850 gboolean folder_item_free_cache         (FolderItem *item, gboolean force);
 851 void folder_item_change_type            (FolderItem *item,
 852                                          SpecialFolderItemType newtype);
 853 gboolean folder_get_sort_type           (Folder         *folder,
 854                                          FolderSortKey  *sort_key,
 855                                          FolderSortType *sort_type);
 856 void folder_item_synchronise            (FolderItem *item);
 857 #endif /* __FOLDER_H__ */