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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camelFolder.c : Abstract class for an email folder */

/* 
 *
 * Copyright (C) 1999 Bertrand Guiheneuf <Bertrand.Guiheneuf@inria.fr> .
 *
 * 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
 */

#include "camel-folder.h"
#include "gstring-util.h"

static GtkObjectClass *parent_class=NULL;

/* Returns the class for a CamelFolder */
#define CF_CLASS(so) CAMEL_FOLDER_CLASS (GTK_OBJECT(so)->klass)

static void camel_folder_init_with_store(CamelFolder *folder, CamelStore *parent_store);
static void camel_folder_open(CamelFolder *folder);
static void camel_folder_close(CamelFolder *folder, gboolean expunge);
static void camel_folder_set_name(CamelFolder *folder, GString *name_);
static void camel_folder_set_full_name(CamelFolder *folder, GString *name);
static GString *camel_folder_get_name(CamelFolder *folder);
static GString *camel_folder_get_full_name(CamelFolder *folder);
static gboolean camel_folder_can_hold_folders(CamelFolder *folder);
static gboolean camel_folder_can_hold_messages(CamelFolder *folder);
static gboolean camel_folder_exists(CamelFolder *folder);
static gboolean camel_folder_is_open(CamelFolder *folder);
static CamelFolder *camel_folder_get_folder(CamelFolder *folder, GString *folder_name);

static void
camel_folder_class_init (CamelFolderClass *camel_folder_class)
{
    parent_class = gtk_type_class (gtk_object_get_type ());
    
    /* virtual method definition */
    camel_folder_class->init_with_store = camel_folder_init_with_store;
    camel_folder_class->open = camel_folder_open;
    camel_folder_class->close = camel_folder_close;
    camel_folder_class->set_name = camel_folder_set_name;
    camel_folder_class->get_name = camel_folder_get_name;
    camel_folder_class->can_hold_folders = camel_folder_can_hold_folders;
    camel_folder_class->can_hold_messages = camel_folder_can_hold_messages;
    camel_folder_class->exists = camel_folder_exists;
    camel_folder_class->is_open = camel_folder_is_open;
    camel_folder_class->get_folder = camel_folder_get_folder;
    /* virtual method overload */
}







GtkType
camel_folder_get_type (void)
{
    static GtkType camel_folder_type = 0;
    
    if (!camel_folder_type) {
        GtkTypeInfo camel_folder_info = 
        {
            "CamelFolder",
            sizeof (CamelFolder),
            sizeof (CamelFolderClass),
            (GtkClassInitFunc) camel_folder_class_init,
            (GtkObjectInitFunc) NULL,
                /* reserved_1 */ NULL,
                /* reserved_2 */ NULL,
            (GtkClassInitFunc) NULL,
        };
        
        camel_folder_type = gtk_type_unique (gtk_object_get_type (), &camel_folder_info);
    }
    
    return camel_folder_type;
}




/**
 * camel_folder_init_with_store: init the folder by setting its parent store. 
 *
 * @folder: folder object to initialize
 * @parent_store: parent store object of the folder
 * 
 * 
 **/
static void 
camel_folder_init_with_store(CamelFolder *folder, CamelStore *parent_store)
{
    g_assert(folder);
    g_assert(parent_store);

    folder->parent_store = parent_store;
}



/** 
 * camel_folder_open: Open a folder
 *
 * Put a folder in its opened state. 
 * 
 **/ 
static void
camel_folder_open(CamelFolder *folder)
{
    folder->open_state = FOLDER_OPEN;
}

/** 
 * camel_folder_close: Close a folder.
 *
 * Put a folder in its closed state, and possibly 
 * expunge the flagged messages.
 * 
 * @expunge: if TRUE, the flagged message are
 * deleted.
 **/ 
static void
camel_folder_close(CamelFolder *folder, gboolean expunge)
{
#warning implement the expunge flag
    folder->open_state = FOLDER_CLOSE;
}



/** 
 * camel_folder_set_name : set the (short) name of the folder
 *
 * set the name of the folder. 
 * The old name object is freed.
 *
 * @name_string: new name of the folder
 *
 **/
static void
camel_folder_set_name(CamelFolder *folder, GString *name)
{
    if (folder->name) g_string_free(folder->name, 0);;
    folder->name = name;
}


/** 
 * camel_folder_set_full_name : set the (full) name of the folder
 *
 * set the name of the folder. 
 * The old name object is freed.
 *
 * @name_string: new name of the folder
 *
 **/
static void
camel_folder_set_full_name(CamelFolder *folder, GString *name)
{
    if (folder->full_name) g_string_free(folder->full_name, 0);;
    folder->full_name = name;
}



/** 
 * camel_folder_get_name : get the (short) name of the folder
 *
 * get the name of the folder. The fully qualified name
 * can be obtained with the get_full_ame method (not implemented)
 *
 * @Return Value: name of the folder
 *
 **/
static GString *
camel_folder_get_name(CamelFolder *folder)
{
    return folder->name;
}


/** 
 * camel_folder_get_full_name : get the (full) name of the folder
 *
 * get the name of the folder. The fully qualified name
 * can be obtained with the get_full_ame method (not implemented)
 *
 * @Return Value: name of the folder
 *
 **/
static GString *
camel_folder_get_full_name(CamelFolder *folder)
{
    return folder->full_name;
}


/**
 * camel_folder_can_hold_folders : tests if the folder can contain other folders
 *
 **/
static gboolean
camel_folder_can_hold_folders(CamelFolder *folder)
{
    return folder->can_hold_folders;
}



/** 
 * camel_folder_can_hold_messages : tests if the folder can contain messages
 *
 **/
static gboolean
camel_folder_can_hold_messages(CamelFolder *folder)
{
    return folder->can_hold_messages;
}



/** 
 * camel_folder_exists : tests if the folder object exists on the store.
 *
 **/
static gboolean
camel_folder_exists(CamelFolder *folder)
{
    return folder->exists_on_store;
}



/** 
 * camel_folder_is_open : test if the folder is open
 *
 **/
static gboolean
camel_folder_is_open(CamelFolder *folder)
{
    return (folder->open_state==FOLDER_OPEN);
}




/** 
 * camel_folder_get_folder: return the (sub)folder object that
 * is specified.
 *
 * This method returns a folder objects. This folder
 * is necessarily a subfolder of the current folder. 
 * It is an error to ask a folder begining with the 
 * folder separator character.  
 * 
 * @folder : the folder
 * @folderName: subfolder path. NULL if the subfolder object
 *        could not be created
 **/
static CamelFolder *
camel_folder_get_folder(CamelFolder *folder, GString *folder_name)
{
    g_warning("getFolder called on the abstract CamelFolder class\n");
    return NULL;
}




/** 
 * create : create the folder object on the physical store
 *
 * This routine physically creates the folder object on 
 * the store. Having created the  object does not
 * mean the folder physically exists. If it does not
 * exists, this routine will create it.
 * if the folder full name contains more than one level
 * of hierarchy, all folders between the current folder
 * and the last folder name will be created if not existing.
 *
 **/
static void
camel_folder_create(CamelFolder *folder)
{
    GString *prefix;
    gchar dich_result;
    CamelFolder *parent;
    gchar sep;


    g_assert(folder->parent_store);
    g_assert(folder->name);

    if ( CF_CLASS(folder)->exists(folder) ) return;
    sep = camel_store_get_separator(folder->parent_store);  
    if (folder->parent_folder) camel_folder_create(folder->parent_folder);
    else {   
        if (folder->full_name) {
            dich_result = g_string_right_dichotomy(folder->full_name, sep, &prefix, NULL, STRIP_TRAILING);
            if (dich_result!='o') {
                g_warning("I have to handle the case where the path is not OK\n"); 
                return;
            } else {
#warning Public method not implemented yet !!!          
                parent = camel_store_get_folder(folder->parent_store, prefix);
                camel_folder_create(parent);
#warning Finish it  when CamelStore is done
                /*
                  [parent free];
                */
            }
        }
    }   
}