path: root/e-util/e-account-list.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2003 Ximian, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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 library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "e-account-list.h"
#include "e-account.h"
#include "e-util-marshal.h"

#include <string.h>

struct EAccountListPrivate {
    GConfClient *gconf;
    guint notify_id;
};

enum {
    ACCOUNT_ADDED,
    ACCOUNT_CHANGED,
    ACCOUNT_REMOVED,
    LAST_SIGNAL
};

static guint signals [LAST_SIGNAL] = { 0 };

static void e_account_list_dispose (GObject *);
static void e_account_list_finalize (GObject *);

G_DEFINE_TYPE (EAccountList, e_account_list, E_TYPE_LIST)

static void
e_account_list_class_init (EAccountListClass *klass)
{
    GObjectClass *object_class;
    
    /* virtual method override */
    object_class = G_OBJECT_CLASS (klass);
    object_class->dispose = e_account_list_dispose;
    object_class->finalize = e_account_list_finalize;

    /* signals */
    signals[ACCOUNT_ADDED] =
        g_signal_new ("account-added",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAccountListClass, account_added),
                  NULL, NULL,
                  e_util_marshal_NONE__OBJECT,
                  G_TYPE_NONE, 1,
                  E_TYPE_ACCOUNT);
    signals[ACCOUNT_CHANGED] =
        g_signal_new ("account-changed",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAccountListClass, account_changed),
                  NULL, NULL,
                  e_util_marshal_NONE__OBJECT,
                  G_TYPE_NONE, 1,
                  E_TYPE_ACCOUNT);
    signals[ACCOUNT_REMOVED] =
        g_signal_new ("account-removed",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAccountListClass, account_removed),
                  NULL, NULL,
                  e_util_marshal_NONE__OBJECT,
                  G_TYPE_NONE, 1,
                  E_TYPE_ACCOUNT);
}

static void
e_account_list_init (EAccountList *account_list)
{
    account_list->priv = g_new0 (EAccountListPrivate, 1);
}

static void
e_account_list_dispose (GObject *object)
{
    EAccountList *account_list = E_ACCOUNT_LIST (object);

    if (account_list->priv->gconf) {
        if (account_list->priv->notify_id) {
            gconf_client_notify_remove (account_list->priv->gconf,
                            account_list->priv->notify_id);
        }
        g_object_unref (account_list->priv->gconf);
        account_list->priv->gconf = NULL;
    }

    G_OBJECT_CLASS (e_account_list_parent_class)->dispose (object);
}

static void
e_account_list_finalize (GObject *object)
{
    EAccountList *account_list = E_ACCOUNT_LIST (object);

    g_free (account_list->priv);

    G_OBJECT_CLASS (e_account_list_parent_class)->finalize (object);
}

static void
gconf_accounts_changed (GConfClient *client, guint cnxn_id,
            GConfEntry *entry, gpointer user_data)
{
    EAccountList *account_list = user_data;
    GSList *list, *l, *new_accounts = NULL;
    EAccount *account;
    EList *old_accounts;
    EIterator *iter;
    char *uid;

    old_accounts = e_list_duplicate (E_LIST (account_list));

    list = gconf_client_get_list (client, "/apps/evolution/mail/accounts",
                      GCONF_VALUE_STRING, NULL);
    for (l = list; l; l = l->next) {
        uid = e_account_uid_from_xml (l->data);
        if (!uid)
            continue;

        /* See if this is an existing account */
        for (iter = e_list_get_iterator (old_accounts);
             e_iterator_is_valid (iter);
             e_iterator_next (iter)) {
            account = (EAccount *)e_iterator_get (iter);
            if (!strcmp (account->uid, uid)) {
                /* The account still exists, so remove
                 * it from "old_accounts" and update it.
                 */
                e_iterator_delete (iter);
                if (e_account_set_from_xml (account, l->data))
                    g_signal_emit (account_list, signals[ACCOUNT_CHANGED], 0, account);
                goto next;
            }
        }

        /* Must be a new account */
        account = e_account_new_from_xml (l->data);
        e_list_append (E_LIST (account_list), account);
        new_accounts = g_slist_prepend (new_accounts, account);

    next:
        g_free (uid);
        g_object_unref (iter);
    }

    /* Now emit signals for each added account. (We do this after
     * adding all of them because otherwise if the signal handler
     * calls e_account_list_get_default_account() it will end up
     * causing the first account in the list to become the
     * default.)
     */
    for (l = new_accounts; l; l = l->next) {
        account = l->data;
        g_signal_emit (account_list, signals[ACCOUNT_ADDED], 0, account);
        g_object_unref (account);
    }
    g_slist_free (new_accounts);

    /* Anything left in old_accounts must have been deleted */
    for (iter = e_list_get_iterator (old_accounts);
         e_iterator_is_valid (iter);
         e_iterator_next (iter)) {
        account = (EAccount *)e_iterator_get (iter);
        e_list_remove (E_LIST (account_list), account);
        g_signal_emit (account_list, signals[ACCOUNT_REMOVED], 0, account);
    }
    g_object_unref (iter);
    g_object_unref (old_accounts);
}

static void *
copy_func (const void *data, void *closure)
{
    GObject *object = (GObject *)data;

    g_object_ref (object);
    return object;
}

static void
free_func (void *data, void *closure)
{
    g_object_unref (data);
}

/**
 * e_account_list_new:
 * @gconf: a #GConfClient
 *
 * Reads the list of accounts from @gconf and listens for changes.
 * Will emit %account_added, %account_changed, and %account_removed
 * signals according to notifications from GConf.
 *
 * You can modify the list using e_list_append(), e_list_remove(), and
 * e_iterator_delete(). After adding, removing, or changing accounts,
 * you must call e_account_list_save() to push the changes back to
 * GConf.
 *
 * Return value: the list of accounts
 **/
EAccountList *
e_account_list_new (GConfClient *gconf)
{
    EAccountList *account_list;

    g_return_val_if_fail (GCONF_IS_CLIENT (gconf), NULL);

    account_list = g_object_new (E_TYPE_ACCOUNT_LIST, NULL);
    e_account_list_construct (account_list, gconf);

    return account_list;
}

void
e_account_list_construct (EAccountList *account_list, GConfClient *gconf)
{
    g_return_if_fail (GCONF_IS_CLIENT (gconf));

    e_list_construct (E_LIST (account_list), copy_func, free_func, NULL);
    account_list->priv->gconf = gconf;
    g_object_ref (gconf);

    gconf_client_add_dir (account_list->priv->gconf,
                  "/apps/evolution/mail/accounts",
                  GCONF_CLIENT_PRELOAD_ONELEVEL, NULL);
    account_list->priv->notify_id =
        gconf_client_notify_add (account_list->priv->gconf,
                     "/apps/evolution/mail/accounts",
                     gconf_accounts_changed, account_list,
                     NULL, NULL);

    gconf_accounts_changed (account_list->priv->gconf,
                account_list->priv->notify_id,
                NULL, account_list);
}

/**
 * e_account_list_save:
 * @account_list: an #EAccountList
 *
 * Saves @account_list to GConf. Signals will be emitted for changes.
 **/
void
e_account_list_save (EAccountList *account_list)
{
    GSList *list = NULL;
    EAccount *account;
    EIterator *iter;
    char *xmlbuf;

    for (iter = e_list_get_iterator (E_LIST (account_list));
         e_iterator_is_valid (iter);
         e_iterator_next (iter)) {
        account = (EAccount *)e_iterator_get (iter);

        xmlbuf = e_account_to_xml (account);
        if (xmlbuf)
            list = g_slist_append (list, xmlbuf);
    }
    g_object_unref (iter);

    gconf_client_set_list (account_list->priv->gconf,
                   "/apps/evolution/mail/accounts",
                   GCONF_VALUE_STRING, list, NULL);

    while (list) {
        g_free (list->data);
        list = g_slist_remove (list, list->data);
    }

    gconf_client_suggest_sync (account_list->priv->gconf, NULL);
}

/**
 * e_account_list_add:
 * @accounts: 
 * @account: 
 * 
 * Add an account to the account list.  Will emit the account-changed
 * event.
 **/
void
e_account_list_add(EAccountList *accounts, EAccount *account)
{
    /* FIXME: should we check for duplicate accounts? */

    e_list_append ((EList *)accounts, account);
    g_signal_emit(accounts, signals[ACCOUNT_ADDED], 0, account);
}

/**
 * e_account_list_change:
 * @accounts: 
 * @account: 
 * 
 * Signal that the details of an account have changed.
 **/
void
e_account_list_change(EAccountList *accounts, EAccount *account)
{
    /* maybe the account should do this itself ... */
    g_signal_emit(accounts, signals[ACCOUNT_CHANGED], 0, account);
}

/**
 * e_account_list_remove:
 * @accounts: 
 * @account: 
 * 
 * Remove an account from the account list, and emit the
 * account-removed signal.  If the account was the default account,
 * then reset the default to the first account.
 **/
void
e_account_list_remove(EAccountList *accounts, EAccount *account)
{
    if (account == e_account_list_get_default(accounts))
        gconf_client_unset (accounts->priv->gconf, "/apps/evolution/mail/default_account", NULL);

    /* not sure if need to ref but no harm */
    g_object_ref (account);
    e_list_remove ((EList *) accounts, account);
    g_signal_emit(accounts, signals[ACCOUNT_REMOVED], 0, account);
    g_object_unref (account);
}

/**
 * e_account_list_get_default:
 * @accounts: 
 * 
 * Get the default account.  If no default is specified, or the default
 * has become stale, then the first account is made the default.
 * 
 * Return value: The account or NULL if no accounts are defined.
 **/
const EAccount *
e_account_list_get_default(EAccountList *accounts)
{
    char *uid;
    EIterator *it;
    const EAccount *account = NULL;

    uid = gconf_client_get_string (accounts->priv->gconf, "/apps/evolution/mail/default_account", NULL);
    it = e_list_get_iterator ((EList *)accounts);

    if (uid) {
        for (;e_iterator_is_valid (it);e_iterator_next (it)) {
            account = (const EAccount *)e_iterator_get (it);

            if (!strcmp(uid, account->uid))
                break;
            account = NULL;
        }
        e_iterator_reset(it);
    }

    /* no uid or uid not found, @it will be at the first account */
    if (account == NULL && e_iterator_is_valid(it)) {
        account = (const EAccount *) e_iterator_get (it);
        gconf_client_set_string (accounts->priv->gconf, "/apps/evolution/mail/default_account", account->uid, NULL);
    }

    g_object_unref(it);
    g_free(uid);

    return account;
}

/**
 * e_account_list_set_default:
 * @accounts: 
 * @account: 
 * 
 * Set the account @account to be the default account.
 **/
void
e_account_list_set_default(EAccountList *accounts, EAccount *account)
{
    gconf_client_set_string (accounts->priv->gconf, "/apps/evolution/mail/default_account", account->uid, NULL);
}

/**
 * e_account_list_find:
 * @accounts: 
 * @type: Type of search.
 * @key: Search key.
 * 
 * Perform a search of the account list on a single key.
 *
 * @type must be set from one of the following search types:
 * E_ACCOUNT_FIND_NAME - Find an account by account name.
 * E_ACCOUNT_FIND_ID_NAME - Find an account by the owner's identity name.
 * E_ACCOUNT_FIND_ID_ADDRESS - Find an account by the owner's identity address.
 * 
 * Return value: The account or NULL if it doesn't exist.
 **/
const EAccount *
e_account_list_find(EAccountList *accounts, e_account_find_t type, const char *key)
{
    char *val;
    EIterator *it;
    const EAccount *account = NULL;

    /* this could use a callback for more flexibility ...
       ... but this makes the common cases easier */

    if (!key)
        return NULL;
    
    for (it = e_list_get_iterator ((EList *)accounts);
         e_iterator_is_valid (it);
         e_iterator_next (it)) {
        int found = 0;

        account = (const EAccount *)e_iterator_get (it);

        val = NULL;
        switch(type) {
        case E_ACCOUNT_FIND_NAME:
            found = strcmp(account->name, key) == 0;
            break;
        case E_ACCOUNT_FIND_UID:
            found = strcmp(account->uid, key) == 0;
            break;
        case E_ACCOUNT_FIND_ID_NAME:
            if (account->id)
                found = strcmp(account->id->name, key) == 0;
            break;
        case E_ACCOUNT_FIND_ID_ADDRESS:
            if (account->id)
                found = g_ascii_strcasecmp(account->id->address, key) == 0;
            break;
        }

        if (found)
            break;

        account = NULL;
    }
    g_object_unref(it);

    return account;
}