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/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      JP Rosevear <jpr@novell.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#include <unistd.h>
#include <gconf/gconf-client.h>
#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <libgnomeui/gnome-druid.h>
#include <libgnomeui/gnome-druid-page-edge.h>
#include <libgnomeui/gnome-druid-page-standard.h>
#include "e-util/e-error.h"
#include "e-util/e-import.h"
#include "shell/es-event.h"
#include "mail/em-config.h"
#include "mail/em-account-editor.h"
#include "calendar/gui/calendar-config.h"

void startup_wizard (EPlugin *ep, ESEventTargetUpgrade *target);
GtkWidget *startup_wizard_importer_page (EPlugin *ep, EConfigHookItemFactoryData *hook_data);
gboolean startup_wizard_check (EPlugin *ep, EConfigHookPageCheckData *check_data);
void startup_wizard_commit (EPlugin *ep, EMConfigTargetAccount *target);
void startup_wizard_abort (EPlugin *ep, EMConfigTargetAccount *target) G_GNUC_NORETURN;

static EImport *import;
static EImportTargetHome *import_target;
static EImportImporter *import_importer;
static GtkWidget *import_dialog, *import_progress, *import_label;
static GSList *import_iterator, *import_importers;

static void
startup_wizard_delete (void) {
    gtk_main_quit ();
    _exit (0);
}

void
startup_wizard (EPlugin *ep, ESEventTargetUpgrade *target)
{
    GConfClient *client;
    GSList *accounts;
    EMAccountEditor *emae;
    GnomeDruidPageEdge *start_page;

    client = gconf_client_get_default ();
    accounts = gconf_client_get_list (client, "/apps/evolution/mail/accounts", GCONF_VALUE_STRING, NULL);
    g_object_unref (client);

    if (accounts != NULL) {
        g_slist_foreach (accounts, (GFunc) g_free, NULL);
        g_slist_free (accounts);

        return;
    }

    /** @HookPoint-EMConfig: New Mail Account Wizard
     * @Id: org.gnome.evolution.mail.config.accountWizard
     * @Type: E_CONFIG_DRUID
     * @Class: org.gnome.evolution.mail.config:1.0
     * @Target: EMConfigTargetAccount
     *
     * The new mail account druid.
     */
    emae = em_account_editor_new (NULL, EMAE_DRUID, "org.gnome.evolution.mail.config.accountWizard");

    gtk_window_set_title (GTK_WINDOW (emae->editor), _("Evolution Setup Assistant"));

    start_page = GNOME_DRUID_PAGE_EDGE (e_config_page_get ((EConfig *) emae->config, "0.start"));
    gnome_druid_page_edge_set_title (start_page, _("Welcome"));
    gnome_druid_page_edge_set_text (start_page, _(""
                    "Welcome to Evolution. The next few screens will allow Evolution to connect "
                    "to your email accounts, and to import files from other applications. \n"
                    "\n"
                    "Please click the \"Forward\" button to continue. "));
    g_signal_connect (emae->editor, "delete-event", G_CALLBACK (startup_wizard_delete), NULL);

    gtk_widget_show (emae->editor);
    gtk_main ();
}

GtkWidget *
startup_wizard_importer_page (EPlugin *ep, EConfigHookItemFactoryData *hook_data)
{
    GtkWidget *page, *label, *sep, *table;
    GSList *l;
    gint row=0;

    if (import == NULL) {
        import = e_import_new("org.gnome.evolution.shell.importer");
        import_target = e_import_target_new_home(import, g_get_home_dir());
        import_importers = e_import_get_importers(import, (EImportTarget *)import_target);
    }

    if (import_importers == NULL)
        return NULL;

    page = gnome_druid_page_standard_new_with_vals (_("Importing files"), NULL, NULL);

    label = gtk_label_new (_("Please select the information that you would like to import:"));
    gtk_box_pack_start (GTK_BOX (GNOME_DRUID_PAGE_STANDARD (page)->vbox), label, FALSE, FALSE, 3);

    sep = gtk_hseparator_new ();
    gtk_box_pack_start (GTK_BOX (GNOME_DRUID_PAGE_STANDARD (page)->vbox), sep, FALSE, FALSE, 3);

    table = gtk_table_new(g_slist_length(import_importers), 2, FALSE);
    for (l = import_importers; l; l = l->next) {
        EImportImporter *eii = l->data;
        gchar *str;
        /* *label already declared */
        GtkWidget *w, *label;

        w = e_import_get_widget(import, (EImportTarget *)import_target, eii);

        str = g_strdup_printf(_("From %s:"), eii->name);
        label = gtk_label_new(str);
        gtk_widget_show(label);
        g_free(str);

        gtk_misc_set_alignment((GtkMisc *)label, 0, .5);

        gtk_table_attach((GtkTable *)table, label, 0, 1, row, row+1, GTK_FILL, 0, 0, 0);
        if (w)
            gtk_table_attach((GtkTable *)table, w, 1, 2, row, row+1, GTK_FILL, 0, 3, 0);
        row++;
    }
    gtk_widget_show(table);
    gtk_box_pack_start((GtkBox *)((GnomeDruidPageStandard *)page)->vbox, table, FALSE, FALSE, 3);

    gnome_druid_append_page (GNOME_DRUID (hook_data->parent), GNOME_DRUID_PAGE (page));

    return page;
}

static void
import_status(EImport *import, const gchar *what, gint pc, gpointer d)
{
    gtk_progress_bar_set_fraction((GtkProgressBar *)import_progress, (gfloat)(pc/100.0));
    gtk_progress_bar_set_text((GtkProgressBar *)import_progress, what);
}

static void
import_dialog_response(GtkDialog *d, guint button, gpointer data)
{
    if (button == GTK_RESPONSE_CANCEL)
        e_import_cancel(import, (EImportTarget *)import_target, import_importer);
}

static void
import_done(EImport *ei, gpointer d)
{
    if (import_iterator && (import_iterator = import_iterator->next)) {
        import_status(ei, "", 0, NULL);
        import_importer = import_iterator->data;
        e_import_import(import, (EImportTarget *)import_target, import_importer, import_status, import_done, NULL);
    } else {
        gtk_widget_destroy(import_dialog);

        g_slist_free(import_importers);
        import_importers = NULL;
        import_importer = NULL;
        e_import_target_free(import, (EImportTarget *)import_target);
        import_target = NULL;
        g_object_unref(import);
        import = NULL;

        gtk_main_quit();
    }
}

void
startup_wizard_commit (EPlugin *ep, EMConfigTargetAccount *target)
{
    gchar *location;

    /* Use System Timezone by default */
    calendar_config_set_use_system_timezone (TRUE);
    location = e_cal_util_get_system_timezone_location ();
    calendar_config_set_timezone (location);
    g_free (location);

    if (import_importers) {
        import_iterator = import_importers;
        import_importer = import_iterator->data;

        import_dialog = e_error_new(NULL, "shell:importing", _("Importing data."), NULL);
        g_signal_connect(import_dialog, "response", G_CALLBACK(import_dialog_response), NULL);
        import_label = gtk_label_new(_("Please wait"));
        import_progress = gtk_progress_bar_new();
        gtk_box_pack_start(GTK_BOX(((GtkDialog *)import_dialog)->vbox), import_label, FALSE, FALSE, 0);
        gtk_box_pack_start(GTK_BOX(((GtkDialog *)import_dialog)->vbox), import_progress, FALSE, FALSE, 0);
        gtk_widget_show_all(import_dialog);

        e_import_import(import, (EImportTarget *)import_target, import_importer, import_status, import_done, NULL);
    } else {
        gtk_main_quit();
    }
}

void
startup_wizard_abort (EPlugin *ep, EMConfigTargetAccount *target)
{
    gtk_main_quit ();
    _exit (0);
}