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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2007 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 * 
 * Authors: Xavier Claessens <xclaesse@gmail.com>
 */

#include "config.h"

#include <ctype.h>
#include <stdlib.h>
#include <string.h>

#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <glade/glade.h>

#include <libmissioncontrol/mc-profile.h>

#include <libempathy/empathy-utils.h>

#include "empathy-account-widget-jabber.h"
#include "empathy-ui-utils.h"

#define PORT_WITHOUT_SSL 5222
#define PORT_WITH_SSL 5223

typedef struct {
    McAccount *account;

    GtkWidget *vbox_settings;
    GtkWidget *button_forget;
    GtkWidget *entry_id;
    GtkWidget *entry_password;
    GtkWidget *entry_resource;
    GtkWidget *entry_server;
    GtkWidget *spinbutton_port;
    GtkWidget *checkbutton_ssl;
} EmpathyAccountWidgetJabber;

static gboolean account_widget_jabber_entry_focus_cb           (GtkWidget                 *widget,
                                GdkEventFocus             *event,
                                EmpathyAccountWidgetJabber *settings);
static void     account_widget_jabber_entry_changed_cb         (GtkWidget                 *widget,
                                EmpathyAccountWidgetJabber *settings);
static void     account_widget_jabber_checkbutton_toggled_cb   (GtkWidget                 *widget,
                                EmpathyAccountWidgetJabber *settings);
static void     account_widget_jabber_value_changed_cb         (GtkWidget                 *spinbutton,
                                EmpathyAccountWidgetJabber *settings);
static void     account_widget_jabber_button_forget_clicked_cb (GtkWidget                 *button,
                                EmpathyAccountWidgetJabber *settings);
static void     account_widget_jabber_destroy_cb               (GtkWidget                 *widget,
                                EmpathyAccountWidgetJabber *settings);
static void     account_widget_jabber_setup                    (EmpathyAccountWidgetJabber *settings);

static gboolean
account_widget_jabber_entry_focus_cb (GtkWidget                 *widget,
                      GdkEventFocus             *event,
                      EmpathyAccountWidgetJabber *settings)
{
    const gchar *param;
    const gchar *str;

    if (widget == settings->entry_password) {
        param = "password";
    }
    else if (widget == settings->entry_resource) {
        param = "resource";
    }
    else if (widget == settings->entry_server) {
        param = "server";
    }
    else if (widget == settings->entry_id) {
        param = "account";
    } else {
        return FALSE;
    }

    str = gtk_entry_get_text (GTK_ENTRY (widget));
    if (G_STR_EMPTY (str)) {
        gchar *value = NULL;

        mc_account_get_param_string (settings->account, param, &value);
        gtk_entry_set_text (GTK_ENTRY (widget), value ? value : "");
        g_free (value);
    } else {
        mc_account_set_param_string (settings->account, param, str);

        if (widget == settings->entry_id) {
            McProfile   *profile;
            const gchar *profile_name;

            /* Try to guess the server if we are using the vanilla
             * jabber profile. We don't have to do that with
             * gtalk profile. */
            profile = mc_account_get_profile (settings->account);
            profile_name = mc_profile_get_unique_name (profile);
            if (strcmp (profile_name, "jabber") == 0) {
                gchar *server;

                server = strstr (str, "@");
                if (server != NULL) {
                    /* skip the leading @ */
                    server++;
                    gtk_entry_set_text (GTK_ENTRY (settings->entry_server), server);
                    mc_account_set_param_string (settings->account, "server", server);
                }
            }
            g_object_unref (profile);
        }
    }

    return FALSE;
}

static void
account_widget_jabber_entry_changed_cb (GtkWidget                 *widget,
                    EmpathyAccountWidgetJabber *settings)
{
    if (widget == settings->entry_password) {
        const gchar *str;

        str = gtk_entry_get_text (GTK_ENTRY (widget));
        gtk_widget_set_sensitive (settings->button_forget, !G_STR_EMPTY (str));
    }
}

static void  
account_widget_jabber_checkbutton_toggled_cb (GtkWidget                 *widget,
                          EmpathyAccountWidgetJabber *settings)
{
    if (widget == settings->checkbutton_ssl) {
        gint     port = 0;
        gboolean old_ssl;

        mc_account_get_param_int (settings->account, "port", &port);
        old_ssl = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget));

        if (old_ssl) {
            if (port == PORT_WITHOUT_SSL) {
                port = PORT_WITH_SSL;
            }
        } else {
            if (port == PORT_WITH_SSL) {
                port = PORT_WITHOUT_SSL;
            }
        }
        
        mc_account_set_param_int (settings->account, "port", port);
        mc_account_set_param_boolean (settings->account, "old-ssl", old_ssl);
        gtk_spin_button_set_value (GTK_SPIN_BUTTON (settings->spinbutton_port), port);
    }
}

static void
account_widget_jabber_value_changed_cb (GtkWidget                 *spinbutton,
                    EmpathyAccountWidgetJabber *settings)
{
    if (spinbutton == settings->spinbutton_port) {
        gdouble value;

        value = gtk_spin_button_get_value (GTK_SPIN_BUTTON (spinbutton));
        mc_account_set_param_int (settings->account, "port", (gint) value);
    }
}

static void
account_widget_jabber_button_forget_clicked_cb (GtkWidget                 *button,
                        EmpathyAccountWidgetJabber *settings)
{
    mc_account_set_param_string (settings->account, "password", "");
    gtk_entry_set_text (GTK_ENTRY (settings->entry_password), "");
}

static void
account_widget_jabber_destroy_cb (GtkWidget                 *widget,
                  EmpathyAccountWidgetJabber *settings)
{
    g_object_unref (settings->account);
    g_free (settings);
}

static void
account_widget_jabber_setup (EmpathyAccountWidgetJabber *settings)
{
    gint      port = 0;
    gchar    *id = NULL;
    gchar    *resource = NULL;
    gchar    *server = NULL;
    gchar    *password = NULL;
    gboolean  old_ssl = FALSE;

    mc_account_get_param_int (settings->account, "port", &port);
    mc_account_get_param_string (settings->account, "account", &id);
    mc_account_get_param_string (settings->account, "resource", &resource);
    mc_account_get_param_string (settings->account, "server", &server);
    mc_account_get_param_string (settings->account, "password", &password);
    mc_account_get_param_boolean (settings->account, "old-ssl", &old_ssl);

    if (!id) {
        McProfile   *profile;
        const gchar *server;

        profile = mc_account_get_profile (settings->account);
        server = mc_profile_get_default_account_domain (profile);
        if (server) {
            id = g_strconcat ("user@", server, NULL);
        }
        g_object_unref (profile);
    }

    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (settings->checkbutton_ssl), old_ssl);
    gtk_entry_set_text (GTK_ENTRY (settings->entry_id), id ? id : "");
    gtk_entry_set_text (GTK_ENTRY (settings->entry_password), password ? password : "");
    gtk_entry_set_text (GTK_ENTRY (settings->entry_resource), resource ? resource : "");
    gtk_entry_set_text (GTK_ENTRY (settings->entry_server), server ? server : "");
    gtk_spin_button_set_value (GTK_SPIN_BUTTON (settings->spinbutton_port), port);

    gtk_widget_set_sensitive (settings->button_forget, !G_STR_EMPTY (password));

    g_free (id);
    g_free (resource);
    g_free (server);
    g_free (password);
}

GtkWidget *
empathy_account_widget_jabber_new (McAccount *account)
{
    EmpathyAccountWidgetJabber *settings;
    GladeXML                  *glade;
    GtkSizeGroup              *size_group;
    GtkWidget                 *label_id, *label_password;
    GtkWidget                 *label_server, *label_resource, *label_port; 

    settings = g_new0 (EmpathyAccountWidgetJabber, 1);
    settings->account = g_object_ref (account);

    glade = empathy_glade_get_file ("empathy-account-widget-jabber.glade",
                       "vbox_jabber_settings",
                       NULL,
                       "vbox_jabber_settings", &settings->vbox_settings,
                       "button_forget", &settings->button_forget,
                       "label_id", &label_id,
                       "label_password", &label_password,
                       "label_resource", &label_resource,
                       "label_server", &label_server,
                       "label_port", &label_port,
                       "entry_id", &settings->entry_id,
                       "entry_password", &settings->entry_password,
                       "entry_resource", &settings->entry_resource,
                       "entry_server", &settings->entry_server,
                       "spinbutton_port", &settings->spinbutton_port,
                       "checkbutton_ssl", &settings->checkbutton_ssl,
                       NULL);

    account_widget_jabber_setup (settings);

    empathy_glade_connect (glade, 
                  settings,
                  "vbox_jabber_settings", "destroy", account_widget_jabber_destroy_cb,
                  "button_forget", "clicked", account_widget_jabber_button_forget_clicked_cb,
                  "entry_password", "changed", account_widget_jabber_entry_changed_cb,
                  "spinbutton_port", "value-changed", account_widget_jabber_value_changed_cb,
                  "entry_id", "focus-out-event", account_widget_jabber_entry_focus_cb,
                  "entry_password", "focus-out-event", account_widget_jabber_entry_focus_cb,
                  "entry_resource", "focus-out-event", account_widget_jabber_entry_focus_cb,
                  "entry_server", "focus-out-event", account_widget_jabber_entry_focus_cb,
                  "checkbutton_ssl", "toggled", account_widget_jabber_checkbutton_toggled_cb,
                  NULL);

    g_object_unref (glade);

    /* Set up remaining widgets */
    size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);

    gtk_size_group_add_widget (size_group, label_id);
    gtk_size_group_add_widget (size_group, label_password);
    gtk_size_group_add_widget (size_group, label_resource);
    gtk_size_group_add_widget (size_group, label_server);
    gtk_size_group_add_widget (size_group, label_port);

    g_object_unref (size_group);

  gtk_editable_select_region (GTK_EDITABLE (settings->entry_id), 0, -1);
  gtk_widget_grab_focus (settings->entry_id);

    gtk_widget_show (settings->vbox_settings);

    return settings->vbox_settings;
}