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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2005-2007 Imendio AB
 * Copyright (C) 2007-2008 Collabora Ltd.
 *
 * 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., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301  USA
 *
 * Authors: Martyn Russell <martyn@imendio.com>
 *          Xavier Claessens <xclaesse@gmail.com>
 */

#include "config.h"

#include <string.h>

#include <glib/gi18n-lib.h>
#include <gtk/gtk.h>

#include <telepathy-glib/account-manager.h>

#include <libempathy/empathy-utils.h>

#include "empathy-ui-utils.h"
#include "empathy-account-chooser.h"

#define DEBUG_FLAG EMPATHY_DEBUG_OTHER
#include <libempathy/empathy-debug.h>

/**
 * SECTION:empathy-account-chooser
 * @title:EmpathyAccountChooser
 * @short_description: A widget used to choose from a list of accounts
 * @include: libempathy-gtk/empathy-account-chooser.h
 *
 * #EmpathyAccountChooser is a widget which extends #GtkComboBox to provide
 * a chooser of available accounts.
 */

/**
 * EmpathyAccountChooser:
 * @parent: parent object
 *
 * Widget which extends #GtkComboBox to provide a chooser of available accounts.
 */

#define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyAccountChooser)
typedef struct {
    TpAccountManager               *manager;
    gboolean                        set_active_item;
    gboolean            account_manually_set;
    gboolean                        has_all_option;
    EmpathyAccountChooserFilterFunc filter;
    gpointer                        filter_data;
    gboolean                        ready;
} EmpathyAccountChooserPriv;

typedef struct {
    EmpathyAccountChooser *chooser;
    TpAccount             *account;
    gboolean               set;
} SetAccountData;

enum {
    COL_ACCOUNT_IMAGE,
    COL_ACCOUNT_TEXT,
    COL_ACCOUNT_ENABLED, /* Usually tied to connected state */
    COL_ACCOUNT_POINTER,
    COL_ACCOUNT_COUNT
};

static void     account_chooser_finalize               (GObject                  *object);
static void     account_chooser_get_property           (GObject                  *object,
                            guint                     param_id,
                            GValue                   *value,
                            GParamSpec               *pspec);
static void     account_chooser_set_property           (GObject                  *object,
                            guint                     param_id,
                            const GValue             *value,
                            GParamSpec               *pspec);
static void     account_chooser_setup                  (EmpathyAccountChooser    *chooser);
static void     account_chooser_account_validity_changed_cb (TpAccountManager    *manager,
                            TpAccount                *account,
                            gboolean                  valid,
                            EmpathyAccountChooser    *chooser);
static void     account_chooser_account_add_foreach    (TpAccount                *account,
                            EmpathyAccountChooser    *chooser);
static void     account_chooser_account_removed_cb     (TpAccountManager         *manager,
                            TpAccount                *account,
                            EmpathyAccountChooser    *chooser);
static void     account_chooser_account_remove_foreach (TpAccount                *account,
                            EmpathyAccountChooser    *chooser);
static void     account_chooser_update_iter            (EmpathyAccountChooser    *chooser,
                            GtkTreeIter              *iter);
static void     account_chooser_status_changed_cb      (TpAccount  *account,
                            guint       old_status,
                            guint       new_status,
                            guint       reason,
                            gchar      *dbus_error_name,
                            GHashTable *details,
                            gpointer    user_data);
static gboolean account_chooser_separator_func         (GtkTreeModel             *model,
                            GtkTreeIter              *iter,
                            EmpathyAccountChooser    *chooser);
static gboolean account_chooser_set_account_foreach    (GtkTreeModel             *model,
                            GtkTreePath              *path,
                            GtkTreeIter              *iter,
                            SetAccountData           *data);

enum {
    PROP_0,
    PROP_HAS_ALL_OPTION,
};

enum {
    READY,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };

G_DEFINE_TYPE (EmpathyAccountChooser, empathy_account_chooser, GTK_TYPE_COMBO_BOX);

static void
empathy_account_chooser_class_init (EmpathyAccountChooserClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    object_class->finalize = account_chooser_finalize;
    object_class->get_property = account_chooser_get_property;
    object_class->set_property = account_chooser_set_property;

    /**
     * EmpathyAccountChooser:has-all-option:
     *
     * Have an additional option in the list to mean all accounts.
     */
    g_object_class_install_property (object_class,
                     PROP_HAS_ALL_OPTION,
                     g_param_spec_boolean ("has-all-option",
                                   "Has All Option",
                                   "Have a separate option in the list to mean ALL accounts",
                                   FALSE,
                                   G_PARAM_READWRITE));

    signals[READY] =
        g_signal_new ("ready",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  0,
                  NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE,
                  0);

    g_type_class_add_private (object_class, sizeof (EmpathyAccountChooserPriv));
}

static void
empathy_account_chooser_init (EmpathyAccountChooser *chooser)
{
    EmpathyAccountChooserPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (chooser,
        EMPATHY_TYPE_ACCOUNT_CHOOSER, EmpathyAccountChooserPriv);

    chooser->priv = priv;
    priv->set_active_item = FALSE;
    priv->account_manually_set = FALSE;
    priv->filter = NULL;
    priv->filter_data = NULL;

    priv->manager = tp_account_manager_dup ();

    g_signal_connect (priv->manager, "account-validity-changed",
              G_CALLBACK (account_chooser_account_validity_changed_cb),
              chooser);
    g_signal_connect (priv->manager, "account-removed",
              G_CALLBACK (account_chooser_account_removed_cb),
              chooser);

    account_chooser_setup (EMPATHY_ACCOUNT_CHOOSER (chooser));
}

static void
account_chooser_finalize (GObject *object)
{
    EmpathyAccountChooserPriv *priv = GET_PRIV (object);

    g_signal_handlers_disconnect_by_func (priv->manager,
                          account_chooser_account_validity_changed_cb,
                          object);
    g_signal_handlers_disconnect_by_func (priv->manager,
                          account_chooser_account_removed_cb,
                          object);
    g_object_unref (priv->manager);

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

static void
account_chooser_get_property (GObject    *object,
                  guint       param_id,
                  GValue     *value,
                  GParamSpec *pspec)
{
    EmpathyAccountChooserPriv *priv;

    priv = GET_PRIV (object);

    switch (param_id) {
    case PROP_HAS_ALL_OPTION:
        g_value_set_boolean (value, priv->has_all_option);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    };
}

static void
account_chooser_set_property (GObject      *object,
                  guint         param_id,
                  const GValue *value,
                  GParamSpec   *pspec)
{
    EmpathyAccountChooserPriv *priv;

    priv = GET_PRIV (object);

    switch (param_id) {
    case PROP_HAS_ALL_OPTION:
        empathy_account_chooser_set_has_all_option (EMPATHY_ACCOUNT_CHOOSER (object),
                               g_value_get_boolean (value));
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    };
}

/**
 * empathy_account_chooser_new:
 *
 * Creates a new #EmpathyAccountChooser.
 *
 * Return value: A new #EmpathyAccountChooser
 */
GtkWidget *
empathy_account_chooser_new (void)
{
    GtkWidget                *chooser;

    chooser = g_object_new (EMPATHY_TYPE_ACCOUNT_CHOOSER, NULL);

    return chooser;
}

/**
 * empathy_account_chooser_dup_account:
 * @chooser: an #EmpathyAccountChooser
 *
 * Returns the account which is currently selected in the chooser or %NULL
 * if there is no account selected. The #TpAccount returned should be
 * unrefed with g_object_unref() when finished with.
 *
 * Return value: a new ref to the #TpAccount currently selected, or %NULL.
 */
TpAccount *
empathy_account_chooser_dup_account (EmpathyAccountChooser *chooser)
{
    EmpathyAccountChooserPriv *priv;
    TpAccount                 *account;
    GtkTreeModel             *model;
    GtkTreeIter               iter;

    g_return_val_if_fail (EMPATHY_IS_ACCOUNT_CHOOSER (chooser), NULL);

    priv = GET_PRIV (chooser);

    model = gtk_combo_box_get_model (GTK_COMBO_BOX (chooser));
    if (!gtk_combo_box_get_active_iter (GTK_COMBO_BOX (chooser), &iter)) {
        return NULL;
    }

    gtk_tree_model_get (model, &iter, COL_ACCOUNT_POINTER, &account, -1);

    return account;
}

/**
 * empathy_account_chooser_get_connection:
 * @chooser: an #EmpathyAccountChooser
 *
 * Returns a borrowed reference to the #TpConnection associated with the
 * account currently selected. The caller must reference the returned object with
 * g_object_ref() if it will be kept
 *
 * Return value: a borrowed reference to the #TpConnection associated with the
 * account curently selected.
 */
TpConnection *
empathy_account_chooser_get_connection (EmpathyAccountChooser *chooser)
{
    EmpathyAccountChooserPriv *priv;
    TpAccount                 *account;
    TpConnection              *connection;

    g_return_val_if_fail (EMPATHY_IS_ACCOUNT_CHOOSER (chooser), NULL);

    priv = GET_PRIV (chooser);

    account = empathy_account_chooser_dup_account (chooser);

    /* if the returned account is NULL, then the account manager probably
     * hasn't been prepared yet. It should be safe to return NULL here
     * though. */
    if (account == NULL) {
        return NULL;
    }

    connection = tp_account_get_connection (account);
    g_object_unref (account);

    return connection;
}

/**
 * empathy_account_chooser_set_account:
 * @chooser: an #EmpathyAccountChooser
 * @account: a #TpAccount
 *
 * Sets the currently selected account to @account, if it exists in the list.
 *
 * Return value: whether the chooser was set to @account.
 */
gboolean
empathy_account_chooser_set_account (EmpathyAccountChooser *chooser,
                     TpAccount             *account)
{
    EmpathyAccountChooserPriv *priv;
    GtkComboBox    *combobox;
    GtkTreeModel   *model;
    GtkTreeIter     iter;
    SetAccountData  data;

    g_return_val_if_fail (EMPATHY_IS_ACCOUNT_CHOOSER (chooser), FALSE);

    priv = GET_PRIV (chooser);

    combobox = GTK_COMBO_BOX (chooser);
    model = gtk_combo_box_get_model (combobox);
    gtk_combo_box_get_active_iter (combobox, &iter);

    data.chooser = chooser;
    data.account = account;

    gtk_tree_model_foreach (model,
                (GtkTreeModelForeachFunc) account_chooser_set_account_foreach,
                &data);

    priv->account_manually_set = data.set;

    return data.set;
}

/**
 * empathy_account_chooser_get_has_all_option:
 * @chooser: an #EmpathyAccountChooser
 *
 * Returns whether @chooser has the #EmpathyAccountChooser:has-all-option property
 * set to true.
 *
 * Return value: whether @chooser has the #EmpathyAccountChooser:has-all-option property
 * enabled.
 */
gboolean
empathy_account_chooser_get_has_all_option (EmpathyAccountChooser *chooser)
{
    EmpathyAccountChooserPriv *priv;

    g_return_val_if_fail (EMPATHY_IS_ACCOUNT_CHOOSER (chooser), FALSE);

    priv = GET_PRIV (chooser);

    return priv->has_all_option;
}

/**
 * empathy_account_chooser_set_has_all_option:
 * @chooser: an #EmpathyAccountChooser
 * @has_all_option: a new value for the #EmpathyAccountChooser:has-all-option property
 *
 * Sets the #EmpathyAccountChooser:has-all-option property.
 */
void
empathy_account_chooser_set_has_all_option (EmpathyAccountChooser *chooser,
                       gboolean              has_all_option)
{
    EmpathyAccountChooserPriv *priv;
    GtkComboBox              *combobox;
    GtkListStore             *store;
    GtkTreeModel             *model;
    GtkTreeIter               iter;

    g_return_if_fail (EMPATHY_IS_ACCOUNT_CHOOSER (chooser));

    priv = GET_PRIV (chooser);

    if (priv->has_all_option == has_all_option) {
        return;
    }

    combobox = GTK_COMBO_BOX (chooser);
    model = gtk_combo_box_get_model (combobox);
    store = GTK_LIST_STORE (model);

    priv->has_all_option = has_all_option;

    /*
     * The first 2 options are the ALL and separator
     */

    if (has_all_option) {
        gtk_combo_box_set_row_separator_func (GTK_COMBO_BOX (chooser),
                              (GtkTreeViewRowSeparatorFunc)
                              account_chooser_separator_func,
                              chooser,
                              NULL);

        gtk_list_store_prepend (store, &iter);
        gtk_list_store_set (store, &iter,
                    COL_ACCOUNT_TEXT, NULL,
                    COL_ACCOUNT_ENABLED, TRUE,
                    COL_ACCOUNT_POINTER, NULL,
                    -1);

        gtk_list_store_prepend (store, &iter);
        gtk_list_store_set (store, &iter,
                    COL_ACCOUNT_TEXT, _("All"),
                    COL_ACCOUNT_ENABLED, TRUE,
                    COL_ACCOUNT_POINTER, NULL,
                    -1);
    } else {
        if (gtk_tree_model_get_iter_first (model, &iter)) {
            if (gtk_list_store_remove (GTK_LIST_STORE (model), &iter)) {
                gtk_list_store_remove (GTK_LIST_STORE (model), &iter);
            }
        }

        gtk_combo_box_set_row_separator_func (GTK_COMBO_BOX (chooser),
                              (GtkTreeViewRowSeparatorFunc)
                              NULL,
                              NULL,
                              NULL);
    }

    g_object_notify (G_OBJECT (chooser), "has-all-option");
}

static void
account_manager_prepared_cb (GObject *source_object,
                 GAsyncResult *result,
                 gpointer user_data)
{
    GList *accounts, *l;
    TpAccountManager *manager = TP_ACCOUNT_MANAGER (source_object);
    EmpathyAccountChooser *chooser = user_data;
    EmpathyAccountChooserPriv *priv = GET_PRIV (chooser);
    GError *error = NULL;

    if (!tp_account_manager_prepare_finish (manager, result, &error)) {
        DEBUG ("Failed to prepare account manager: %s", error->message);
        g_error_free (error);
        return;
    }

    accounts = tp_account_manager_get_valid_accounts (manager);

    for (l = accounts; l != NULL; l = l->next) {
        TpAccount *account = l->data;

        account_chooser_account_add_foreach (account, chooser);

        empathy_signal_connect_weak (account, "status-changed",
                         G_CALLBACK (account_chooser_status_changed_cb),
                         G_OBJECT (chooser));
    }

    g_list_free (accounts);

    priv->ready = TRUE;
    g_signal_emit (chooser, signals[READY], 0);
}

static void
account_chooser_setup (EmpathyAccountChooser *chooser)
{
    EmpathyAccountChooserPriv *priv;
    GtkListStore             *store;
    GtkCellRenderer          *renderer;
    GtkComboBox              *combobox;

    priv = GET_PRIV (chooser);

    /* Set up combo box with new store */
    combobox = GTK_COMBO_BOX (chooser);

    gtk_cell_layout_clear (GTK_CELL_LAYOUT (combobox));

    store = gtk_list_store_new (COL_ACCOUNT_COUNT,
                    G_TYPE_STRING,    /* Image */
                    G_TYPE_STRING,    /* Name */
                    G_TYPE_BOOLEAN,   /* Enabled */
                    TP_TYPE_ACCOUNT);

    gtk_combo_box_set_model (combobox, GTK_TREE_MODEL (store));

    renderer = gtk_cell_renderer_pixbuf_new ();
    gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combobox), renderer, FALSE);
    gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combobox), renderer,
                    "icon-name", COL_ACCOUNT_IMAGE,
                    "sensitive", COL_ACCOUNT_ENABLED,
                    NULL);
    g_object_set (renderer, "stock-size", GTK_ICON_SIZE_BUTTON, NULL);

    renderer = gtk_cell_renderer_text_new ();
    gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combobox), renderer, TRUE);
    gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combobox), renderer,
                    "text", COL_ACCOUNT_TEXT,
                    "sensitive", COL_ACCOUNT_ENABLED,
                    NULL);

    /* Populate accounts */
    tp_account_manager_prepare_async (priv->manager, NULL,
                      account_manager_prepared_cb, chooser);

    g_object_unref (store);
}

static void
account_chooser_account_validity_changed_cb (TpAccountManager      *manager,
                         TpAccount             *account,
                         gboolean               valid,
                         EmpathyAccountChooser *chooser)
{
    if (valid) {
        account_chooser_account_add_foreach (account, chooser);
    } else {
        account_chooser_account_remove_foreach (account, chooser);
    }
}

static void
account_chooser_account_add_foreach (TpAccount             *account,
                     EmpathyAccountChooser *chooser)
{
    GtkListStore *store;
    GtkComboBox  *combobox;
    GtkTreeIter   iter;
    gint          position;

    combobox = GTK_COMBO_BOX (chooser);
    store = GTK_LIST_STORE (gtk_combo_box_get_model (combobox));

    position = gtk_tree_model_iter_n_children (GTK_TREE_MODEL (store), NULL);
    gtk_list_store_insert_with_values (store, &iter, position,
                       COL_ACCOUNT_POINTER, account,
                       -1);
    account_chooser_update_iter (chooser, &iter);
}

static void
account_chooser_account_removed_cb (TpAccountManager      *manager,
                    TpAccount             *account,
                    EmpathyAccountChooser *chooser)
{
    account_chooser_account_remove_foreach (account, chooser);
}

typedef struct {
    TpAccount   *account;
    GtkTreeIter *iter;
    gboolean     found;
} FindAccountData;

static gboolean
account_chooser_find_account_foreach (GtkTreeModel *model,
                      GtkTreePath  *path,
                      GtkTreeIter  *iter,
                      gpointer      user_data)
{
    FindAccountData *data = user_data;
    TpAccount  *account;

    gtk_tree_model_get (model, iter, COL_ACCOUNT_POINTER, &account, -1);

    if (account == data->account) {
        data->found = TRUE;
        *(data->iter) = *iter;
        g_object_unref (account);

        return TRUE;
    }

    g_object_unref (account);

    return FALSE;
}

static gboolean
account_chooser_find_account (EmpathyAccountChooser *chooser,
                  TpAccount             *account,
                  GtkTreeIter           *iter)
{
    GtkListStore    *store;
    GtkComboBox     *combobox;
    FindAccountData  data;

    combobox = GTK_COMBO_BOX (chooser);
    store = GTK_LIST_STORE (gtk_combo_box_get_model (combobox));

    data.account = account;
    data.iter = iter;
    gtk_tree_model_foreach (GTK_TREE_MODEL (store),
                account_chooser_find_account_foreach,
                &data);

    return data.found;
}

static void
account_chooser_account_remove_foreach (TpAccount             *account,
                    EmpathyAccountChooser *chooser)
{
    GtkListStore *store;
    GtkComboBox  *combobox;
    GtkTreeIter   iter;

    combobox = GTK_COMBO_BOX (chooser);
    store = GTK_LIST_STORE (gtk_combo_box_get_model (combobox));

    if (account_chooser_find_account (chooser, account, &iter)) {
        gtk_list_store_remove (store, &iter);
    }
}

static void
account_chooser_update_iter (EmpathyAccountChooser *chooser,
                 GtkTreeIter           *iter)
{
    EmpathyAccountChooserPriv *priv;
    GtkListStore              *store;
    GtkComboBox               *combobox;
    TpAccount                 *account;
    const gchar               *icon_name;
    gboolean                   is_enabled = TRUE;

    priv = GET_PRIV (chooser);

    combobox = GTK_COMBO_BOX (chooser);
    store = GTK_LIST_STORE (gtk_combo_box_get_model (combobox));

    gtk_tree_model_get (GTK_TREE_MODEL (store), iter,
                COL_ACCOUNT_POINTER, &account,
                -1);

    icon_name = tp_account_get_icon_name (account);
    if (priv->filter) {
        is_enabled = priv->filter (account, priv->filter_data);
    }

    gtk_list_store_set (store, iter,
                COL_ACCOUNT_IMAGE, icon_name,
                COL_ACCOUNT_TEXT, tp_account_get_display_name (account),
                COL_ACCOUNT_ENABLED, is_enabled,
                -1);

    /* set first connected account as active account */
    if (priv->account_manually_set == FALSE &&
        priv->set_active_item == FALSE && is_enabled) {
        priv->set_active_item = TRUE;
        gtk_combo_box_set_active_iter (combobox, iter);
    }

    g_object_unref (account);
}

static void
account_chooser_status_changed_cb (TpAccount  *account,
                   guint       old_status,
                   guint       new_status,
                   guint       reason,
                   gchar      *dbus_error_name,
                   GHashTable *details,
                   gpointer    user_data)
{
    EmpathyAccountChooser *chooser = user_data;
    GtkTreeIter iter;

    if (account_chooser_find_account (chooser, account, &iter)) {
        account_chooser_update_iter (chooser, &iter);
    }
}

static gboolean
account_chooser_separator_func (GtkTreeModel         *model,
                GtkTreeIter          *iter,
                EmpathyAccountChooser *chooser)
{
    EmpathyAccountChooserPriv *priv;
    gchar                    *text;
    gboolean                  is_separator;

    priv = GET_PRIV (chooser);

    if (!priv->has_all_option) {
        return FALSE;
    }

    gtk_tree_model_get (model, iter, COL_ACCOUNT_TEXT, &text, -1);
    is_separator = text == NULL;
    g_free (text);

    return is_separator;
}

static gboolean
account_chooser_set_account_foreach (GtkTreeModel   *model,
                     GtkTreePath    *path,
                     GtkTreeIter    *iter,
                     SetAccountData *data)
{
    TpAccount *account;
    gboolean   equal;

    gtk_tree_model_get (model, iter, COL_ACCOUNT_POINTER, &account, -1);

    /* Special case so we can make it possible to select the All option */
    if ((data->account == NULL) != (account == NULL)) {
        equal = FALSE;
    }
    else {
        equal = (data->account == account);
    }

    if (account) {
        g_object_unref (account);
    }

    if (equal) {
        GtkComboBox *combobox;

        combobox = GTK_COMBO_BOX (data->chooser);
        gtk_combo_box_set_active_iter (combobox, iter);

        data->set = TRUE;
    }

    return equal;
}

static gboolean
account_chooser_filter_foreach (GtkTreeModel *model,
                GtkTreePath  *path,
                GtkTreeIter  *iter,
                gpointer      chooser)
{
    account_chooser_update_iter (chooser, iter);
    return FALSE;
}

/**
 * empathy_account_chooser_set_filter:
 * @chooser: an #EmpathyAccountChooser
 * @filter: a filter
 * @user_data: data to pass to @filter, or %NULL
 *
 * Sets a filter on the @chooser so only accounts that are %TRUE in the eyes
 * of the filter are visible in the @chooser.
 */
void
empathy_account_chooser_set_filter (EmpathyAccountChooser           *chooser,
                                    EmpathyAccountChooserFilterFunc  filter,
                                    gpointer                         user_data)
{
    EmpathyAccountChooserPriv *priv;
    GtkTreeModel *model;

    g_return_if_fail (EMPATHY_IS_ACCOUNT_CHOOSER (chooser));

    priv = GET_PRIV (chooser);

    priv->filter = filter;
    priv->filter_data = user_data;

    /* Refilter existing data */
    priv->set_active_item = FALSE;
    model = gtk_combo_box_get_model (GTK_COMBO_BOX (chooser));
    gtk_tree_model_foreach (model, account_chooser_filter_foreach, chooser);
}

/**
 * EmpathyAccountChooserFilterFunc:
 * @account: a #TpAccount
 * @user_data: user data, or %NULL
 *
 * A function which decides whether the account indicated by @account
 * is visible.
 *
 * Return value: whether the account indicated by @account is visible.
 */

/**
 * empathy_account_chooser_filter_is_connected:
 * @account: a #TpAccount
 * @user_data: user data or %NULL
 *
 * A useful #EmpathyAccountChooserFilterFunc that one could pass into
 * empathy_account_chooser_set_filter() and only show connected accounts.
 *
 * Return value: Whether @account is connected
 */
gboolean
empathy_account_chooser_filter_is_connected (TpAccount *account,
                         gpointer   user_data)
{
    return (tp_account_get_connection_status (account, NULL)
        == TP_CONNECTION_STATUS_CONNECTED);
}

gboolean
empathy_account_chooser_is_ready (EmpathyAccountChooser *self)
{
    EmpathyAccountChooserPriv *priv = GET_PRIV (self);

    return priv->ready;
}