path: root/mail/em-mailer-prefs.c

/*
 * 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:
 *      Jeffrey Stedfast <fejj@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

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

#include "em-mailer-prefs.h"
#include "em-format.h"

#include <camel/camel-iconv.h>
#include <gtkhtml/gtkhtml-properties.h>
#include <libxml/tree.h>
#include "misc/e-charset-picker.h"

#include <glade/glade.h>

#include <gconf/gconf-client.h>

#include "libedataserverui/e-cell-renderer-color.h"

#include "e-util/e-binding.h"
#include "e-util/e-util-private.h"
#include "e-util/e-util-labels.h"

#include "mail-config.h"
#include "em-junk-hook.h"
#include "em-config.h"
#include "mail-session.h"

static void em_mailer_prefs_class_init (EMMailerPrefsClass *class);
static void em_mailer_prefs_init       (EMMailerPrefs *dialog);
static void em_mailer_prefs_finalize   (GObject *object);

static GtkVBoxClass *parent_class = NULL;

enum {
    HEADER_LIST_NAME_COLUMN, /* displayable name of the header (may be a translation) */
    HEADER_LIST_ENABLED_COLUMN, /* is the header enabled? */
    HEADER_LIST_IS_DEFAULT_COLUMN,  /* is this header a default header, eg From: */
    HEADER_LIST_HEADER_COLUMN, /* the real name of this header */
    HEADER_LIST_N_COLUMNS,
};

static GType col_types[] = {
    G_TYPE_STRING,
    G_TYPE_BOOLEAN,
    G_TYPE_BOOLEAN,
    G_TYPE_STRING
};

/* temporarily copied from em-format.c */
static const char *default_headers[] = {
    N_("From"),
    N_("Reply-To"),
    N_("To"),
    N_("Cc"),
    N_("Bcc"),
    N_("Subject"),
    N_("Date"),
    N_("Newsgroups"),
    N_("Face"),
    "x-evolution-mailer", /* DO NOT translate */
};

#define EM_FORMAT_HEADER_XMAILER "x-evolution-mailer"

/* for empty trash on exit frequency */
static const struct {
    const char *label;
    int days;
} empty_trash_frequency[] = {
    { N_("Every time"), 0 },
    { N_("Once per day"), 1 },
    { N_("Once per week"), 7 },
    { N_("Once per month"), 30 },
};

GType
em_mailer_prefs_get_type (void)
{
    static GType type = 0;

    if (!type) {
        GTypeInfo type_info = {
            sizeof (EMMailerPrefsClass),
            NULL, NULL,
            (GClassInitFunc) em_mailer_prefs_class_init,
            NULL, NULL,
            sizeof (EMMailerPrefs),
            0,
            (GInstanceInitFunc) em_mailer_prefs_init,
        };

        type = g_type_register_static (gtk_vbox_get_type (), "EMMailerPrefs", &type_info, 0);
    }

    return type;
}

static void
em_mailer_prefs_class_init (EMMailerPrefsClass *klass)
{
    GObjectClass *object_class;

    object_class = (GObjectClass *) klass;
    parent_class = g_type_class_ref (gtk_vbox_get_type ());

    object_class->finalize = em_mailer_prefs_finalize;
}

static void
em_mailer_prefs_init (EMMailerPrefs *preferences)
{
    preferences->gconf = mail_config_get_gconf_client ();
}

static void
em_mailer_prefs_finalize (GObject *obj)
{
    EMMailerPrefs *prefs = (EMMailerPrefs *) obj;

    g_object_unref (prefs->gui);

    if (prefs->labels_change_notify_id) {
        gconf_client_notify_remove (prefs->gconf, prefs->labels_change_notify_id);

        prefs->labels_change_notify_id = 0;
    }

        ((GObjectClass *)(parent_class))->finalize (obj);
}

static gboolean
mark_seen_timeout_transform (const GValue *src_value,
                             GValue *dst_value,
                             gpointer user_data)
{
    gdouble v_double;

    /* Shell Settings (int) -> Spin Button (double) */
    v_double = (gdouble) g_value_get_int (src_value);
    g_value_set_double (dst_value, v_double / 1000.0);

    return TRUE;
}

static gboolean
mark_seen_timeout_reverse_transform (const GValue *src_value,
                                     GValue *dst_value,
                                     gpointer user_data)
{
    gdouble v_double;

    /* Spin Button (double) -> Shell Settings (int) */
    v_double = g_value_get_double (src_value);
    g_value_set_int (dst_value, v_double * 1000);

    return TRUE;
}

static gboolean
transform_color_to_string (const GValue *src_value,
                           GValue *dst_value,
                           gpointer user_data)
{
    const GdkColor *color;
    gchar *string;

    color = g_value_get_boxed (src_value);
    string = gdk_color_to_string (color);
    g_value_set_string (dst_value, string);
    g_free (string);

    return TRUE;
}

static gboolean
transform_string_to_color (const GValue *src_value,
                           GValue *dst_value,
                           gpointer user_data)
{
    GdkColor color;
    const gchar *string;
    gboolean success;

    string = g_value_get_string (src_value);
    if (gdk_color_parse (string, &color))
        g_value_set_boxed (dst_value, &color);

    return success;
}

enum {
    LABEL_LIST_COLUMN_COLOR,
    LABEL_LIST_COLUMN_TAG,
    LABEL_LIST_COLUMN_NAME
};

enum {
    JH_LIST_COLUMN_NAME,
    JH_LIST_COLUMN_VALUE,
};
static void
label_sensitive_buttons (EMMailerPrefs *prefs)
{
    gboolean can_remove = FALSE, have_selected = FALSE, locked;

    g_return_if_fail (prefs);

    /* it's not sensitive if it's locked for updates */
    locked = !GTK_WIDGET_IS_SENSITIVE (prefs->label_tree);

    if (!locked) {
        GtkTreeSelection *selection;
        GtkTreeModel *model;
        GtkTreeIter iter;

        selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (prefs->label_tree));
        if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
            gchar *tag = NULL;

            gtk_tree_model_get (model, &iter, LABEL_LIST_COLUMN_TAG, &tag, -1);

            can_remove = tag && !e_util_labels_is_system (tag);
            have_selected = TRUE;

            g_free (tag);
        }
    }

    gtk_widget_set_sensitive (prefs->label_remove, !locked && can_remove);
    gtk_widget_set_sensitive (prefs->label_edit,  !locked && have_selected);
}

static void
label_tree_cursor_changed (GtkWidget *widget, gpointer user_data)
{
    label_sensitive_buttons (user_data);
}

static void
label_tree_refill (GConfClient *client, guint cnxn_id, GConfEntry *entry, gpointer user_data)
{
    EMMailerPrefs *prefs = (EMMailerPrefs *)user_data;
    GSList *labels, *l;
    GtkTreeSelection *selection;
    GtkListStore *store;
    GtkTreeModel *model;
    GtkTreeIter last_iter;
    gchar *last_path = NULL;

    g_return_if_fail (prefs != NULL);

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (prefs->label_tree));
    if (gtk_tree_selection_get_selected (selection, &model, &last_iter))
        last_path = gtk_tree_model_get_string_from_iter (model, &last_iter);

    store = GTK_LIST_STORE (model);
    gtk_list_store_clear (store);

    /* cannot use mail-config cache here, because it's (or can be) updated later than this function call */
    labels = e_util_labels_parse (client);

    for (l = labels; l; l = l->next) {
        GdkColor color;
        GtkTreeIter iter;
        EUtilLabel *label = l->data;

        if (label->colour)
            gdk_color_parse (label->colour, &color);

        gtk_list_store_append (store, &iter);
        gtk_list_store_set (
            store, &iter,
            LABEL_LIST_COLUMN_COLOR, label->colour ? &color : NULL,
            LABEL_LIST_COLUMN_NAME, label->name,
            LABEL_LIST_COLUMN_TAG, label->tag,
            -1);
    }

    if (last_path) {
        gint children;

        children = gtk_tree_model_iter_n_children (model, NULL);
        if (children > 0) {
            GtkTreePath *path;

            if (!gtk_tree_model_get_iter_from_string (model, &last_iter, last_path))
                gtk_tree_model_iter_nth_child (model, &last_iter, NULL, children - 1);

            path = gtk_tree_model_get_path (model, &last_iter);
            if (path) {
                GtkTreeViewColumn *focus_col = gtk_tree_view_get_column (GTK_TREE_VIEW (prefs->label_tree), LABEL_LIST_COLUMN_NAME);

                gtk_tree_view_set_cursor (GTK_TREE_VIEW (prefs->label_tree), path, focus_col, FALSE);
                gtk_tree_view_row_activated (GTK_TREE_VIEW (prefs->label_tree), path, focus_col);
                gtk_tree_path_free (path);
            }
        }

        g_free (last_path);
    }

    label_sensitive_buttons (prefs);
    e_util_labels_free (labels);
}


static void
jh_tree_refill (EMMailerPrefs *prefs)
{
    GtkListStore *store = prefs->junk_header_list_store;
    GSList *l, *cjh = gconf_client_get_list (prefs->gconf, "/apps/evolution/mail/junk/custom_header", GCONF_VALUE_STRING, NULL);

    gtk_list_store_clear (store);

    for (l = cjh; l; l = l->next) {
        GtkTreeIter iter;
        char **tokens = g_strsplit (l->data, "=", 2);

        gtk_list_store_append (store, &iter);
        gtk_list_store_set (
            store, &iter,
            JH_LIST_COLUMN_NAME , tokens[0] ? tokens[0] : "",
            JH_LIST_COLUMN_VALUE, tokens[1] ? tokens[1] : "" ,
            -1);
        g_strfreev (tokens);
    }

    g_slist_foreach (cjh, (GFunc) g_free, NULL);
    g_slist_free (cjh);
}

static void
jh_add_cb (GtkWidget *widget, gpointer user_data)
{
    EMMailerPrefs *prefs = (EMMailerPrefs *) user_data;
    GtkWidget *dialog, *l1, *l2, *entry1, *entry2, *vbox, *hbox;
    int response;
    dialog = gtk_dialog_new_with_buttons (_("Add Custom Junk Header"), (GtkWindow *)gtk_widget_get_toplevel (widget), GTK_DIALOG_DESTROY_WITH_PARENT, GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL);

    vbox = gtk_vbox_new (FALSE, 6);
    hbox = gtk_hbox_new (FALSE, 0);
    l1 = gtk_label_new_with_mnemonic (_("Header Name:"));
    l2 = gtk_label_new_with_mnemonic (_("Header Value Contains:"));
    entry1 = gtk_entry_new ();
    entry2 = gtk_entry_new ();
    gtk_box_pack_start ((GtkBox *) hbox, l1, FALSE, FALSE, 6);
    gtk_box_pack_start ((GtkBox *)hbox, entry1, FALSE, FALSE, 6);
    gtk_box_pack_start ((GtkBox *)vbox, hbox, FALSE, FALSE, 6);

    hbox = gtk_hbox_new (FALSE, 0);
    gtk_box_pack_start ((GtkBox *)hbox, l2, FALSE, FALSE, 6);
    gtk_box_pack_start ((GtkBox *)hbox, entry2, FALSE, FALSE, 6);
    gtk_box_pack_start ((GtkBox *)vbox, hbox, FALSE, FALSE, 6);
    
    gtk_widget_show_all (vbox);
    gtk_container_add ((GtkContainer *)((GtkDialog *)dialog)->vbox, vbox);
    response = gtk_dialog_run ((GtkDialog *)dialog);
    if (response == GTK_RESPONSE_ACCEPT) {
        const char *name = gtk_entry_get_text ((GtkEntry *)entry1);
        const char *value = gtk_entry_get_text ((GtkEntry *)entry2);
        char *tok;
        GSList *list = gconf_client_get_list (prefs->gconf, "/apps/evolution/mail/junk/custom_header", GCONF_VALUE_STRING, NULL);
        
        //FIXME: Validate the values
        
        tok = g_strdup_printf ("%s=%s", name, value);
        list = g_slist_append (list, tok);
        gconf_client_set_list (prefs->gconf, "/apps/evolution/mail/junk/custom_header", GCONF_VALUE_STRING, list, NULL);
        g_slist_foreach (list, (GFunc)g_free, NULL);

        g_slist_free (list);
    }
    gtk_widget_destroy (dialog);
    jh_tree_refill (prefs);
}

static void
jh_remove_cb (GtkWidget *widget, gpointer user_data)
{
    EMMailerPrefs *prefs = user_data;
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter;

    g_return_if_fail (prefs != NULL);

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (prefs->junk_header_tree));
    if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
        char *name=NULL, *value=NULL;
        GSList *prev = NULL, *node, *list = gconf_client_get_list (prefs->gconf, "/apps/evolution/mail/junk/custom_header", GCONF_VALUE_STRING, NULL);
        gtk_tree_model_get (model, &iter, JH_LIST_COLUMN_NAME, &name, JH_LIST_COLUMN_VALUE, &value, -1);
        node = list;
        while (node) {
            char *test;
            int len = strlen (name);
            test = strncmp (node->data, name, len) == 0 ? node->data+len:NULL;

            if (test) {
                test++;
                if (strcmp (test, value) == 0)
                    break;
            }
                
            prev = node;
            node = node->next;
        }

        if (prev && !node) {
            /* Not found. So what? */
        } else if (prev && node) {
            prev->next = node->next;
            g_free (node->data);
        } else if (!prev && node) {
            list = list->next;
            g_free (node->data);
        }

        gconf_client_set_list (prefs->gconf, "/apps/evolution/mail/junk/custom_header", GCONF_VALUE_STRING, list, NULL);

        g_slist_foreach (list, (GFunc)g_free, NULL);
        g_slist_free (list);
        g_free (name);
        g_free (value);

        jh_tree_refill (prefs);
    }
}


static GtkListStore *
init_junk_tree (GtkWidget *label_tree, EMMailerPrefs *prefs)
{
    GtkListStore *store;
    GtkCellRenderer *renderer;
    gint col;

    g_return_val_if_fail (label_tree != NULL, NULL);
    g_return_val_if_fail (prefs != NULL, NULL);

    store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_STRING);
    gtk_tree_view_set_model (GTK_TREE_VIEW (label_tree), GTK_TREE_MODEL (store));

    renderer = gtk_cell_renderer_text_new ();
    col = gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (label_tree), -1, _("Header"), renderer, "text", JH_LIST_COLUMN_NAME, NULL);
    g_object_set (G_OBJECT (renderer), "editable", TRUE, NULL);

    renderer = gtk_cell_renderer_text_new ();
    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (label_tree), -1, _("Contains Value"), renderer, "text", JH_LIST_COLUMN_VALUE, NULL);
    g_object_set (G_OBJECT (renderer), "editable", TRUE, NULL);

    label_tree_refill (NULL, 0, NULL, prefs);

    return store;
}

static GtkListStore *
init_label_tree (GtkWidget *label_tree, EMMailerPrefs *prefs, gboolean locked)
{
    GtkListStore *store;
    GtkCellRenderer *renderer;
    gint col;

    g_return_val_if_fail (label_tree != NULL, NULL);
    g_return_val_if_fail (prefs != NULL, NULL);

    store = gtk_list_store_new (3, GDK_TYPE_COLOR, G_TYPE_STRING, G_TYPE_STRING);
    gtk_tree_view_set_model (GTK_TREE_VIEW (label_tree), GTK_TREE_MODEL (store));

    renderer = e_cell_renderer_color_new ();
    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (label_tree), -1, _("Color"), renderer, "color", LABEL_LIST_COLUMN_COLOR, NULL);

    renderer = gtk_cell_renderer_text_new ();
    col = gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (label_tree), -1, _("Tag"), renderer, "text", LABEL_LIST_COLUMN_TAG, NULL);
    g_object_set (G_OBJECT (renderer), "editable", FALSE, NULL);
    gtk_tree_view_column_set_visible (gtk_tree_view_get_column (GTK_TREE_VIEW (label_tree), col - 1), FALSE);

    renderer = gtk_cell_renderer_text_new ();
    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (label_tree), -1, _("Name"), renderer, "text", LABEL_LIST_COLUMN_NAME, NULL);
    g_object_set (G_OBJECT (renderer), "editable", FALSE, NULL);

    if (!locked)
        g_signal_connect (label_tree, "cursor-changed", G_CALLBACK (label_tree_cursor_changed), prefs);

    label_tree_refill (NULL, 0, NULL, prefs);

    prefs->labels_change_notify_id = gconf_client_notify_add (prefs->gconf, E_UTIL_LABELS_GCONF_KEY, label_tree_refill, prefs, NULL, NULL);

    return store;
}

static void
label_add_cb (GtkWidget *widget, gpointer user_data)
{
    char *tag;

    tag = e_util_labels_add_with_dlg (GTK_WINDOW (gtk_widget_get_toplevel (widget)), NULL);

    g_free (tag);
}

static void
label_remove_cb (GtkWidget *widget, gpointer user_data)
{
    EMMailerPrefs *prefs = user_data;
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter;

    g_return_if_fail (prefs != NULL);

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (prefs->label_tree));
    if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
        gchar *tag = NULL;

        gtk_tree_model_get (model, &iter, LABEL_LIST_COLUMN_TAG, &tag, -1);

        if (tag && !e_util_labels_is_system (tag))
            e_util_labels_remove (tag);

        g_free (tag);
    }
}

static void
label_edit_cb (GtkWidget *widget, gpointer user_data)
{
    EMMailerPrefs *prefs = user_data;
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter;

    g_return_if_fail (prefs != NULL);

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (prefs->label_tree));
    if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
        gchar *tag = NULL;

        gtk_tree_model_get (model, &iter, LABEL_LIST_COLUMN_TAG, &tag, -1);

        if (tag) {
            char *str = e_util_labels_add_with_dlg (GTK_WINDOW (gtk_widget_get_toplevel (widget)), tag);

            g_free (str);
        }

        g_free (tag);
    }
}

static void
emmp_header_remove_sensitivity (EMMailerPrefs *prefs)
{
    GtkTreeIter iter;
    GtkTreeSelection *selection = gtk_tree_view_get_selection (prefs->header_list);
    gboolean is_default;

    /* remove button should be sensitive if the currenlty selected entry in the list view
           is not a default header. if there are no entries, or none is selected, it should be
           disabled
    */
    if (gtk_tree_selection_get_selected (selection, NULL, &iter)) {
        gtk_tree_model_get (GTK_TREE_MODEL (prefs->header_list_store), &iter,
                    HEADER_LIST_IS_DEFAULT_COLUMN, &is_default,
                    -1);
        if (is_default)
            gtk_widget_set_sensitive (GTK_WIDGET (prefs->remove_header), FALSE);
        else
            gtk_widget_set_sensitive (GTK_WIDGET (prefs->remove_header), TRUE);
    } else {
        gtk_widget_set_sensitive (GTK_WIDGET (prefs->remove_header), FALSE);
    }
}

static gboolean
emmp_header_is_valid (const char *header)
{
    gint len = g_utf8_strlen (header, -1);

    if (header[0] == 0
        || g_utf8_strchr (header, len, ':') != NULL
        || g_utf8_strchr (header, len, ' ') != NULL)
        return FALSE;

    return TRUE;
}

static void
emmp_header_add_sensitivity (EMMailerPrefs *prefs)
{
    const char *entry_contents;
    GtkTreeIter iter;
    gboolean valid;

    /* the add header button should be sensitive if the text box contains
       a valid header string, that is not a duplicate with something already
       in the list view
    */
    entry_contents = gtk_entry_get_text (GTK_ENTRY (prefs->entry_header));
    if (!emmp_header_is_valid (entry_contents)) {
        gtk_widget_set_sensitive (GTK_WIDGET (prefs->add_header), FALSE);
        return;
    }

    /* check if this is a duplicate */
    valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (prefs->header_list_store), &iter);
    while (valid) {
        char *header_name;

        gtk_tree_model_get (GTK_TREE_MODEL (prefs->header_list_store), &iter,
                    HEADER_LIST_HEADER_COLUMN, &header_name,
                    -1);
        if (g_ascii_strcasecmp (header_name, entry_contents) == 0) {
            gtk_widget_set_sensitive (GTK_WIDGET (prefs->add_header), FALSE);
            return;
        }

        valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (prefs->header_list_store), &iter);
    }

    gtk_widget_set_sensitive (GTK_WIDGET (prefs->add_header), TRUE);
}

static void
emmp_save_headers (EMMailerPrefs *prefs)
{
    GSList *header_list;
    GtkTreeIter iter;
    gboolean valid;

    /* Headers */
    header_list = NULL;
    valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (prefs->header_list_store), &iter);
    while (valid) {
        struct _EMMailerPrefsHeader h;
        gboolean enabled;
        char *xml;

        gtk_tree_model_get (GTK_TREE_MODEL (prefs->header_list_store), &iter,
                    HEADER_LIST_HEADER_COLUMN, &h.name,
                    HEADER_LIST_ENABLED_COLUMN, &enabled,
                    -1);
        h.enabled = enabled;

        if ((xml = em_mailer_prefs_header_to_xml (&h)))
            header_list = g_slist_append (header_list, xml);

        valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (prefs->header_list_store), &iter);
    }

    gconf_client_set_list (prefs->gconf, "/apps/evolution/mail/display/headers", GCONF_VALUE_STRING, header_list, NULL);
    g_slist_foreach (header_list, (GFunc) g_free, NULL);
    g_slist_free (header_list);
}

static void
emmp_header_list_enabled_toggled (GtkCellRendererToggle *cell, const char *path_string, EMMailerPrefs *prefs)
{
    GtkTreeModel *model = GTK_TREE_MODEL (prefs->header_list_store);
    GtkTreePath *path = gtk_tree_path_new_from_string (path_string);
    GtkTreeIter iter;
    int enabled;

    gtk_tree_model_get_iter (model, &iter, path);
    gtk_tree_model_get (model, &iter, HEADER_LIST_ENABLED_COLUMN, &enabled, -1);
    enabled = !enabled;
    gtk_list_store_set (GTK_LIST_STORE (model), &iter, HEADER_LIST_ENABLED_COLUMN,
                enabled, -1);
    gtk_tree_path_free (path);

    emmp_save_headers (prefs);
}

static void
emmp_header_add_header (GtkWidget *widget, EMMailerPrefs *prefs)
{
    GtkTreeModel *model = GTK_TREE_MODEL (prefs->header_list_store);
    GtkTreeIter iter;
    const gchar *text = gtk_entry_get_text (prefs->entry_header);

    g_strstrip ((gchar *)text);

    if (text && (strlen (text)>0)) {
        gtk_list_store_append (GTK_LIST_STORE (model), &iter);
        gtk_list_store_set (GTK_LIST_STORE (model), &iter,
                HEADER_LIST_NAME_COLUMN, text,
                HEADER_LIST_ENABLED_COLUMN, TRUE,
                HEADER_LIST_HEADER_COLUMN, text,
                HEADER_LIST_IS_DEFAULT_COLUMN, FALSE,
                -1);
        gtk_entry_set_text (prefs->entry_header, "");
        emmp_header_remove_sensitivity (prefs);
        emmp_header_add_sensitivity (prefs);

        emmp_save_headers (prefs);
    }
}

static void
emmp_header_remove_header (GtkWidget *button, gpointer user_data)
{
    EMMailerPrefs *prefs = (EMMailerPrefs *) user_data;
    GtkTreeModel *model = GTK_TREE_MODEL (prefs->header_list_store);
    GtkTreeSelection *selection = gtk_tree_view_get_selection (prefs->header_list);
    GtkTreeIter iter;

    if (!gtk_tree_selection_get_selected (selection, NULL, &iter))
        return;

    gtk_list_store_remove (GTK_LIST_STORE (model), &iter);
    emmp_header_remove_sensitivity (prefs);

    emmp_save_headers (prefs);
}

static void
emmp_header_list_row_selected (GtkTreeSelection *selection, gpointer user_data)
{
    EMMailerPrefs *prefs = (EMMailerPrefs *) user_data;

    emmp_header_remove_sensitivity (prefs);
}

static void
emmp_header_entry_changed (GtkWidget *entry, gpointer user_data)
{
    EMMailerPrefs *prefs = (EMMailerPrefs *) user_data;

    emmp_header_add_sensitivity (prefs);
}

static void
toggle_button_toggled (GtkToggleButton *toggle, EMMailerPrefs *prefs)
{
    const char *key;

    key = g_object_get_data ((GObject *) toggle, "key");
    gconf_client_set_bool (prefs->gconf, key, gtk_toggle_button_get_active (toggle), NULL);
}

static void
junk_book_lookup_button_toggled (GtkToggleButton *toggle, EMMailerPrefs *prefs)
{
    toggle_button_toggled (toggle, prefs);
    gtk_widget_set_sensitive (GTK_WIDGET (prefs->junk_lookup_local_only), gtk_toggle_button_get_active (toggle));
}

static void
custom_junk_button_toggled (GtkToggleButton *toggle, EMMailerPrefs *prefs)
{
    toggle_button_toggled (toggle, prefs);
    if (gtk_toggle_button_get_active (toggle)) {
        gtk_widget_set_sensitive ((GtkWidget *) prefs->junk_header_remove, TRUE);
        gtk_widget_set_sensitive ((GtkWidget *) prefs->junk_header_add, TRUE);
        gtk_widget_set_sensitive ((GtkWidget *) prefs->junk_header_tree, TRUE);
    } else {
        gtk_widget_set_sensitive ((GtkWidget *) prefs->junk_header_tree, FALSE);
        gtk_widget_set_sensitive ((GtkWidget *) prefs->junk_header_add, FALSE);
        gtk_widget_set_sensitive ((GtkWidget *) prefs->junk_header_remove, FALSE);
    }


}

static void
toggle_button_init (EMMailerPrefs *prefs, GtkToggleButton *toggle, int not, const char *key, GCallback toggled)
{
    gboolean bool;

    bool = gconf_client_get_bool (prefs->gconf, key, NULL);
    gtk_toggle_button_set_active (toggle, not ? !bool : bool);

    if (toggled) {
        g_object_set_data ((GObject *) toggle, "key", (void *) key);
        g_signal_connect (toggle, "toggled", toggled, prefs);
    }

    if (!gconf_client_key_is_writable (prefs->gconf, key, NULL))
        gtk_widget_set_sensitive ((GtkWidget *) toggle, FALSE);
}

static void
charset_activate (GtkWidget *item, EMMailerPrefs *prefs)
{
    GtkWidget *menu;
    char *string;

    menu = gtk_option_menu_get_menu (prefs->charset);
    if (!(string = e_charset_picker_get_charset (menu)))
        string = g_strdup (camel_iconv_locale_charset ());

    gconf_client_set_string (prefs->gconf, "/apps/evolution/mail/display/charset", string, NULL);
    g_free (string);
}

static void
charset_menu_init (EMMailerPrefs *prefs)
{
    GtkWidget *menu, *item;
    GList *items;
    char *buf;

    buf = gconf_client_get_string (prefs->gconf, "/apps/evolution/mail/display/charset", NULL);
    menu = e_charset_picker_new (buf && *buf ? buf : camel_iconv_locale_charset ());
    gtk_option_menu_set_menu (prefs->charset, GTK_WIDGET (menu));
    g_free (buf);

    items = GTK_MENU_SHELL (menu)->children;
    while (items) {
        item = items->data;
        g_signal_connect (item, "activate", G_CALLBACK (charset_activate), prefs);
        items = items->next;
    }

    if (!gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/display/charset", NULL))
        gtk_widget_set_sensitive ((GtkWidget *) prefs->charset, FALSE);
}

static void
trash_days_activate (GtkWidget *item, EMMailerPrefs *prefs)
{
    int days;

    days = GPOINTER_TO_INT (g_object_get_data ((GObject *) item, "days"));
    gconf_client_set_int (prefs->gconf, "/apps/evolution/mail/trash/empty_on_exit_days", days, NULL);
}

static void
emmp_empty_trash_init (EMMailerPrefs *prefs)
{
    int locked, days, hist = 0, i;
    GtkWidget *menu, *item;

    days = gconf_client_get_int(prefs->gconf, "/apps/evolution/mail/trash/empty_on_exit_days", NULL);
    menu = gtk_menu_new();
    for (i = 0; i < G_N_ELEMENTS (empty_trash_frequency); i++) {
        if (days >= empty_trash_frequency[i].days)
            hist = i;

        item = gtk_menu_item_new_with_label (_(empty_trash_frequency[i].label));
        g_object_set_data ((GObject *) item, "days", GINT_TO_POINTER (empty_trash_frequency[i].days));
        g_signal_connect (item, "activate", G_CALLBACK (trash_days_activate), prefs);

        gtk_widget_show (item);
        gtk_menu_shell_append((GtkMenuShell *)menu, item);
    }

    gtk_widget_show(menu);
    gtk_option_menu_set_menu((GtkOptionMenu *)prefs->empty_trash_days, menu);
    gtk_option_menu_set_history((GtkOptionMenu *)prefs->empty_trash_days, hist);

    locked = !gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/trash/empty_on_exit_days", NULL);
    gtk_widget_set_sensitive ((GtkWidget *) prefs->empty_trash_days, !locked);
}

static void
junk_days_activate (GtkWidget *item, EMMailerPrefs *prefs)
{
    int days;

    days = GPOINTER_TO_INT (g_object_get_data ((GObject *) item, "days"));
    gconf_client_set_int (prefs->gconf, "/apps/evolution/mail/junk/empty_on_exit_days", days, NULL);
}

static void
emmp_empty_junk_init (EMMailerPrefs *prefs)
{
    int locked, days, hist = 0, i;
    GtkWidget *menu, *item;

    toggle_button_init (prefs, prefs->empty_junk, FALSE,
                "/apps/evolution/mail/junk/empty_on_exit",
                G_CALLBACK (toggle_button_toggled));

    days = gconf_client_get_int(prefs->gconf, "/apps/evolution/mail/junk/empty_on_exit_days", NULL);
    menu = gtk_menu_new();
    for (i = 0; i < G_N_ELEMENTS (empty_trash_frequency); i++) {
        if (days >= empty_trash_frequency[i].days)
            hist = i;

        item = gtk_menu_item_new_with_label (_(empty_trash_frequency[i].label));
        g_object_set_data ((GObject *) item, "days", GINT_TO_POINTER (empty_trash_frequency[i].days));
        g_signal_connect (item, "activate", G_CALLBACK (junk_days_activate), prefs);

        gtk_widget_show (item);
        gtk_menu_shell_append((GtkMenuShell *)menu, item);
    }

    gtk_widget_show(menu);
    gtk_option_menu_set_menu((GtkOptionMenu *)prefs->empty_junk_days, menu);
    gtk_option_menu_set_history((GtkOptionMenu *)prefs->empty_junk_days, hist);

    locked = !gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/junk/empty_on_exit_days", NULL);
    gtk_widget_set_sensitive ((GtkWidget *) prefs->empty_junk_days, !locked);
}

static void
http_images_changed (GtkWidget *widget, EMMailerPrefs *prefs)
{
    int when;

    if (gtk_toggle_button_get_active (prefs->images_always))
        when = MAIL_CONFIG_HTTP_ALWAYS;
    else if (gtk_toggle_button_get_active (prefs->images_sometimes))
        when = MAIL_CONFIG_HTTP_SOMETIMES;
    else
        when = MAIL_CONFIG_HTTP_NEVER;

    gconf_client_set_int (prefs->gconf, "/apps/evolution/mail/display/load_http_images", when, NULL);
}


static GtkWidget *
emmp_widget_glade(EConfig *ec, EConfigItem *item, struct _GtkWidget *parent, struct _GtkWidget *old, void *data)
{
    EMMailerPrefs *prefs = data;

    return glade_xml_get_widget(prefs->gui, item->label);
}

/* plugin meta-data */
static EMConfigItem emmp_items[] = {
    { E_CONFIG_BOOK, "", "preferences_toplevel", emmp_widget_glade },
    { E_CONFIG_PAGE, "00.general", "vboxGeneral", emmp_widget_glade },
    { E_CONFIG_SECTION, "00.general/00.fonts", "vboxMessageFonts", emmp_widget_glade },
    { E_CONFIG_SECTION, "00.general/10.display", "vboxMessageDisplay", emmp_widget_glade },
    { E_CONFIG_SECTION, "00.general/20.delete", "vboxDeletingMail", emmp_widget_glade },
    { E_CONFIG_SECTION, "00.general/30.newmail", "vboxNewMailNotify", emmp_widget_glade },
    { E_CONFIG_PAGE, "10.html", "vboxHtmlMail", emmp_widget_glade },
    { E_CONFIG_SECTION, "10.html/00.general", "vbox173", emmp_widget_glade },
    { E_CONFIG_SECTION, "10.html/10.images", "vbox190", emmp_widget_glade },
    { E_CONFIG_PAGE, "20.labels", "frameColours", emmp_widget_glade },
    /* this is a table, so we can't use it { E_CONFIG_SECTION, "20.labels/00.labels", "tableColours", emmp_widget_glade }, */
    { E_CONFIG_PAGE, "30.headers", "vboxHeaderTab", emmp_widget_glade },
    /* no subvbox for section { E_CONFIG_PAGE, "30.headers/00.headers", "vbox199", emmp_widget_glade }, */
    { E_CONFIG_PAGE, "40.junk", "vbox161", emmp_widget_glade },
    /* no subvbox for section { E_CONFIG_SECTION, "40.junk/00.general", xxx, emmp_widget_glade } */
    { E_CONFIG_SECTION, "40.junk/10.options", "vbox204", emmp_widget_glade },
};

static void
emmp_free(EConfig *ec, GSList *items, void *data)
{
    /* the prefs data is freed automagically */

    g_slist_free(items);
}

static void
junk_plugin_changed (GtkWidget *combo, EMMailerPrefs *prefs)
{
    char *def_plugin = gtk_combo_box_get_active_text(GTK_COMBO_BOX (combo));
    const GList *plugins = mail_session_get_junk_plugins();

    gconf_client_set_string (prefs->gconf, "/apps/evolution/mail/junk/default_plugin", def_plugin, NULL);
    while (plugins) {
        struct _EMJunkHookItem *item = plugins->data;;

        if (item->plugin_name && def_plugin && !strcmp (item->plugin_name, def_plugin)) {
            gboolean status;

            session->junk_plugin = CAMEL_JUNK_PLUGIN (&(item->csp));
            status = e_plugin_invoke (item->hook->hook.plugin, item->validate_binary, NULL) != NULL;
            if ((gboolean)status == TRUE) {
                char *text, *html;
                gtk_image_set_from_stock (prefs->plugin_image, "gtk-dialog-info", GTK_ICON_SIZE_MENU);
                text = g_strdup_printf (_("%s plugin is available and the binary is installed."), item->plugin_name);
                html = g_strdup_printf ("<i>%s</i>", text);
                gtk_label_set_markup (prefs->plugin_status, html);
                g_free (html);
                g_free (text);
            } else {
                char *text, *html;
                gtk_image_set_from_stock (prefs->plugin_image, "gtk-dialog-warning", GTK_ICON_SIZE_MENU);
                text = g_strdup_printf (_("%s plugin is not available. Please check whether the package is installed."), item->plugin_name);
                html = g_strdup_printf ("<i>%s</i>", text);
                gtk_label_set_markup (prefs->plugin_status, html);
                g_free (html);
                g_free (text);
            }
            break;
        }
        plugins = plugins->next;
    }
}

static void
junk_plugin_setup (GtkWidget *combo, EMMailerPrefs *prefs)
{
    int index = 0;
    gboolean def_set = FALSE;
    const GList *plugins = mail_session_get_junk_plugins();
    char *pdefault = gconf_client_get_string (prefs->gconf, "/apps/evolution/mail/junk/default_plugin", NULL);

    if (!plugins || !g_list_length ((GList *)plugins)) {
        gtk_combo_box_append_text (GTK_COMBO_BOX (combo), _("No Junk plugin available"));
        gtk_combo_box_set_active (GTK_COMBO_BOX (combo), 0);
        gtk_widget_set_sensitive (GTK_WIDGET (combo), FALSE);
        gtk_widget_hide (GTK_WIDGET (prefs->plugin_image));
        gtk_widget_hide (GTK_WIDGET (prefs->plugin_status));
        gtk_image_set_from_stock (prefs->plugin_image, NULL, 0);
        g_free (pdefault);

        return;
    }

    while (plugins) {
        struct _EMJunkHookItem *item = plugins->data;;

        gtk_combo_box_append_text (GTK_COMBO_BOX (combo), item->plugin_name);
        if (!def_set && pdefault && item->plugin_name && !strcmp(pdefault, item->plugin_name)) {
            gboolean status;

            def_set = TRUE;
            gtk_combo_box_set_active (GTK_COMBO_BOX (combo), index);
            status = e_plugin_invoke (item->hook->hook.plugin, item->validate_binary, NULL) != NULL;
            if (status) {
                char *text, *html;
                gtk_image_set_from_stock (prefs->plugin_image, "gtk-dialog-info", GTK_ICON_SIZE_MENU);
                /* May be a better text */
                text = g_strdup_printf (_("%s plugin is available and the binary is installed."), item->plugin_name);
                html = g_strdup_printf ("<i>%s</i>", text);
                gtk_label_set_markup (prefs->plugin_status, html);
                g_free (html);
                g_free (text);
            } else {
                char *text, *html;
                gtk_image_set_from_stock (prefs->plugin_image, "gtk-dialog-warning", GTK_ICON_SIZE_MENU);
                /* May be a better text */
                text = g_strdup_printf (_("%s plugin is not available. Please check whether the package is installed."), item->plugin_name);
                html = g_strdup_printf ("<i>%s</i>", text);
                gtk_label_set_markup (prefs->plugin_status, html);
                g_free (html);
                g_free (text);
            }
        }
        plugins = plugins->next;
        index++;
    }

    g_signal_connect (combo, "changed", G_CALLBACK(junk_plugin_changed), prefs);
    g_free (pdefault);
}

GtkWidget *
create_combo_text_widget (void) {
    return gtk_combo_box_new_text ();
}

static void
em_mailer_prefs_construct (EMMailerPrefs *prefs,
                           EShell *shell)
{
    GSList *header_config_list, *header_add_list, *p;
    EShellSettings *shell_settings;
    GHashTable *default_header_hash;
    GtkWidget *toplevel;
    GtkWidget *widget;
    GtkTreeSelection *selection;
    GtkCellRenderer *renderer;
    GtkTreeIter iter;
    GladeXML *gui;
    gboolean locked;
    int val, i;
    EMConfig *ec;
    EMConfigTargetPrefs *target;
    GSList *l;
    char *gladefile;

    shell_settings = e_shell_get_shell_settings (shell);

    gladefile = g_build_filename (EVOLUTION_GLADEDIR,
                      "mail-config.glade",
                      NULL);
    gui = glade_xml_new (gladefile, "preferences_toplevel", NULL);
    g_free (gladefile);

    prefs->gui = gui;

    /** @HookPoint-EMConfig: Mail Preferences Page
     * @Id: org.gnome.evolution.mail.prefs
     * @Type: E_CONFIG_BOOK
     * @Class: org.gnome.evolution.mail.config:1.0
     * @Target: EMConfigTargetPrefs
     *
     * The main mail preferences page.
     */
    ec = em_config_new(E_CONFIG_BOOK, "org.gnome.evolution.mail.prefs");
    l = NULL;
    for (i=0;i<sizeof(emmp_items)/sizeof(emmp_items[0]);i++)
        l = g_slist_prepend(l, &emmp_items[i]);
    e_config_add_items((EConfig *)ec, l, NULL, NULL, emmp_free, prefs);

    /* General tab */

    /* Message Display */
    widget = glade_xml_get_widget (gui, "chkMarkTimeout");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-mark-seen",
        G_OBJECT (widget), "active");

    /* The "mark seen" timeout requires special transform functions
     * because we display the timeout value to the user in seconds
     * but store the settings value in milliseconds. */
    widget = glade_xml_get_widget (gui, "spinMarkTimeout");
    prefs->timeout = GTK_SPIN_BUTTON (widget);
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-mark-seen",
        G_OBJECT (widget), "sensitive");
    e_mutual_binding_new_full (
        G_OBJECT (shell_settings), "mail-mark-seen-timeout",
        G_OBJECT (widget), "value",
        mark_seen_timeout_transform,
        mark_seen_timeout_reverse_transform,
        NULL, NULL);

    widget = glade_xml_get_widget (gui, "mlimit_checkbutton");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-force-message-limit",
        G_OBJECT (widget), "active");

    widget = glade_xml_get_widget (gui, "mlimit_spin");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-force-message-limit",
        G_OBJECT (widget), "sensitive");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-message-text-part-limit",
        G_OBJECT (widget), "value");

    widget = glade_xml_get_widget (gui, "address_checkbox");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-address-compress",
        G_OBJECT (widget), "active");

    widget = glade_xml_get_widget (gui, "address_spin");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-address-compress",
        G_OBJECT (widget), "sensitive");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-address-count",
        G_OBJECT (widget), "value");

    widget = glade_xml_get_widget (gui, "magic_spacebar_checkbox");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-magic-spacebar",
        G_OBJECT (widget), "active");

    prefs->charset = GTK_OPTION_MENU (glade_xml_get_widget (gui, "omenuCharset"));
    charset_menu_init (prefs);

    widget = glade_xml_get_widget (gui, "chkHighlightCitations");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-mark-citations",
        G_OBJECT (widget), "active");

    widget = glade_xml_get_widget (gui, "colorButtonHighlightCitations");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-mark-citations",
        G_OBJECT (widget), "sensitive");
    e_mutual_binding_new_full (
        G_OBJECT (shell_settings), "mail-citation-color",
        G_OBJECT (widget), "color",
        transform_string_to_color,
        transform_color_to_string,
        NULL, NULL);

    widget = glade_xml_get_widget (gui, "chkEnableSearchFolders");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-enable-search-folders",
        G_OBJECT (widget), "active");

    /* Deleting Mail */
    widget = glade_xml_get_widget (gui, "chkEmptyTrashOnExit");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-empty-trash-on-exit",
        G_OBJECT (widget), "active");

    prefs->empty_trash_days = GTK_OPTION_MENU (glade_xml_get_widget (gui, "omenuEmptyTrashDays"));
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-empty-trash-on-exit",
        G_OBJECT (prefs->empty_trash_days), "sensitive");
    emmp_empty_trash_init (prefs);

    widget = glade_xml_get_widget (gui, "chkConfirmExpunge");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-confirm-expunge",
        G_OBJECT (widget), "active");

    /* Mail Fonts */
    widget = glade_xml_get_widget (gui, "radFontUseSame");
    e_mutual_binding_new_with_negation (
        G_OBJECT (shell_settings), "mail-use-custom-fonts",
        G_OBJECT (widget), "active");

    widget = glade_xml_get_widget (gui, "FontFixed");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-font-monospace",
        G_OBJECT (widget), "font-name");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-use-custom-fonts",
        G_OBJECT (widget), "sensitive");

    widget = glade_xml_get_widget (gui, "FontVariable");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-font-variable",
        G_OBJECT (widget), "font-name");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-use-custom-fonts",
        G_OBJECT (widget), "sensitive");

    /* HTML Mail tab */

    /* Loading Images */
    locked = !gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/display/load_http_images", NULL);

    val = gconf_client_get_int (prefs->gconf, "/apps/evolution/mail/display/load_http_images", NULL);
    prefs->images_never = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "radImagesNever"));
    gtk_toggle_button_set_active (prefs->images_never, val == MAIL_CONFIG_HTTP_NEVER);
    if (locked)
        gtk_widget_set_sensitive ((GtkWidget *) prefs->images_never, FALSE);

    prefs->images_sometimes = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "radImagesSometimes"));
    gtk_toggle_button_set_active (prefs->images_sometimes, val == MAIL_CONFIG_HTTP_SOMETIMES);
    if (locked)
        gtk_widget_set_sensitive ((GtkWidget *) prefs->images_sometimes, FALSE);

    prefs->images_always = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "radImagesAlways"));
    gtk_toggle_button_set_active (prefs->images_always, val == MAIL_CONFIG_HTTP_ALWAYS);
    if (locked)
        gtk_widget_set_sensitive ((GtkWidget *) prefs->images_always, FALSE);

    g_signal_connect (prefs->images_never, "toggled", G_CALLBACK (http_images_changed), prefs);
    g_signal_connect (prefs->images_sometimes, "toggled", G_CALLBACK (http_images_changed), prefs);
    g_signal_connect (prefs->images_always, "toggled", G_CALLBACK (http_images_changed), prefs);

    widget = glade_xml_get_widget (gui, "chkShowAnimatedImages");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-show-animated-images",
        G_OBJECT (widget), "active");

    widget = glade_xml_get_widget (gui, "chkPromptWantHTML");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-confirm-unwanted-html",
        G_OBJECT (widget), "active");

    /* Labels... */
    locked = !gconf_client_key_is_writable (prefs->gconf, E_UTIL_LABELS_GCONF_KEY, NULL);
    prefs->label_add    = glade_xml_get_widget (gui, "labelAdd");
    prefs->label_edit   = glade_xml_get_widget (gui, "labelEdit");
    prefs->label_remove = glade_xml_get_widget (gui, "labelRemove");
    prefs->label_tree   = glade_xml_get_widget (gui, "labelTree");

    gtk_widget_set_sensitive (prefs->label_add, !locked);
    gtk_widget_set_sensitive (prefs->label_remove, !locked);
    gtk_widget_set_sensitive (prefs->label_edit, !locked);
    gtk_widget_set_sensitive (prefs->label_tree, !locked);

    prefs->label_list_store = init_label_tree (prefs->label_tree, prefs, locked);

    if (!locked) {
        g_signal_connect (G_OBJECT (prefs->label_add), "clicked", G_CALLBACK (label_add_cb), prefs);
        g_signal_connect (G_OBJECT (prefs->label_remove), "clicked", G_CALLBACK (label_remove_cb), prefs);
        g_signal_connect (G_OBJECT (prefs->label_edit), "clicked", G_CALLBACK (label_edit_cb), prefs);
    }

    /* headers */
    locked = !gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/display/headers", NULL);

    widget = glade_xml_get_widget (gui, "photo_show");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-show-sender-photo",
        G_OBJECT (widget), "active");

    widget = glade_xml_get_widget (gui, "photo_local");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-show-sender-photo",
        G_OBJECT (widget), "sensitive");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-only-local-photos",
        G_OBJECT (widget), "active");

    /* always de-sensitised until the user types something in the entry */
    prefs->add_header = GTK_BUTTON (glade_xml_get_widget (gui, "cmdHeadersAdd"));
    gtk_widget_set_sensitive ((GtkWidget *) prefs->add_header, FALSE);

    /* always de-sensitised until the user selects a header in the list */
    prefs->remove_header = GTK_BUTTON (glade_xml_get_widget (gui, "cmdHeadersRemove"));
    gtk_widget_set_sensitive ((GtkWidget *) prefs->remove_header, FALSE);

    prefs->entry_header = GTK_ENTRY (glade_xml_get_widget (gui, "txtHeaders"));
    gtk_widget_set_sensitive ((GtkWidget *) prefs->entry_header, !locked);

    prefs->header_list = GTK_TREE_VIEW (glade_xml_get_widget (gui, "treeHeaders"));
    gtk_widget_set_sensitive ((GtkWidget *) prefs->header_list, !locked);

    selection = gtk_tree_view_get_selection (prefs->header_list);
    g_signal_connect (selection, "changed", G_CALLBACK (emmp_header_list_row_selected), prefs);
    g_signal_connect (prefs->entry_header, "changed", G_CALLBACK (emmp_header_entry_changed), prefs);
    g_signal_connect (prefs->entry_header, "activate", G_CALLBACK (emmp_header_add_header), prefs);
    /* initialise the tree with appropriate headings */
    prefs->header_list_store = gtk_list_store_newv (HEADER_LIST_N_COLUMNS, col_types);
    g_signal_connect (prefs->add_header, "clicked", G_CALLBACK (emmp_header_add_header), prefs);
    g_signal_connect (prefs->remove_header, "clicked", G_CALLBACK (emmp_header_remove_header), prefs);
    gtk_tree_view_set_model (prefs->header_list, GTK_TREE_MODEL (prefs->header_list_store));

    renderer = gtk_cell_renderer_toggle_new ();
    g_object_set (renderer, "activatable", TRUE, NULL);
    g_signal_connect (renderer, "toggled", G_CALLBACK (emmp_header_list_enabled_toggled), prefs);
        gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (prefs->header_list), -1,
                             "Enabled", renderer,
                             "active", HEADER_LIST_ENABLED_COLUMN,
                             NULL);
    renderer = gtk_cell_renderer_text_new ();
    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (prefs->header_list), -1,
                             "Name", renderer,
                             "text", HEADER_LIST_NAME_COLUMN,
                             NULL);

    /* populated the listview with entries; firstly we add all the default headers, and then
       we add read header configuration out of gconf. If a header in gconf is a default header,
       we update the enabled flag accordingly
    */
    header_add_list = NULL;
    default_header_hash = g_hash_table_new (g_str_hash, g_str_equal);
    for (i = 0; i < G_N_ELEMENTS (default_headers); i++) {
        struct _EMMailerPrefsHeader *h;

        h = g_malloc (sizeof (struct _EMMailerPrefsHeader));
        h->is_default = TRUE;
        h->name = g_strdup (default_headers[i]);
        h->enabled = strcmp ((char *)default_headers[i], "x-evolution-mailer") != 0;
        g_hash_table_insert (default_header_hash, (gpointer) default_headers[i], h);
        header_add_list = g_slist_append (header_add_list, h);
    }

    /* read stored headers from gconf */
    header_config_list = gconf_client_get_list (prefs->gconf, "/apps/evolution/mail/display/headers", GCONF_VALUE_STRING, NULL);
    p = header_config_list;
    while (p) {
        struct _EMMailerPrefsHeader *h, *def;
        char *xml = (char *) p->data;

        h = em_mailer_prefs_header_from_xml (xml);
        if (h) {
            def = g_hash_table_lookup (default_header_hash, h->name);
            if (def) {
                def->enabled = h->enabled;
                em_mailer_prefs_header_free (h);
            } else {
                h->is_default = FALSE;
                header_add_list = g_slist_append (header_add_list, h);
            }
        }

        p = p->next;
    }

    g_hash_table_destroy (default_header_hash);
    g_slist_foreach (header_config_list, (GFunc) g_free, NULL);
    g_slist_free (header_config_list);

    p = header_add_list;
    while (p) {
        struct _EMMailerPrefsHeader *h = (struct _EMMailerPrefsHeader *) p->data;
        const char *name;

        if (g_ascii_strcasecmp (h->name, EM_FORMAT_HEADER_XMAILER) == 0)
            name = _("Mailer");
        else
            name = _(h->name);

        gtk_list_store_append (prefs->header_list_store, &iter);
        gtk_list_store_set (prefs->header_list_store, &iter,
                    HEADER_LIST_NAME_COLUMN, name,
                    HEADER_LIST_ENABLED_COLUMN, h->enabled,
                    HEADER_LIST_IS_DEFAULT_COLUMN, h->is_default,
                    HEADER_LIST_HEADER_COLUMN, h->name,
                    -1);

        em_mailer_prefs_header_free (h);
        p = p->next;
    }

    g_slist_free (header_add_list);

    /* Junk prefs */
    widget = glade_xml_get_widget (gui, "chkCheckIncomingMail");
    e_mutual_binding_new (
        G_OBJECT (shell_settings), "mail-check-for-junk",
        G_OBJECT (widget), "active");

    prefs->empty_junk = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "junk_empty_check"));
    prefs->empty_junk_days = GTK_OPTION_MENU (glade_xml_get_widget (gui, "junk_empty_combo"));
    emmp_empty_junk_init (prefs);

    prefs->default_junk_plugin = GTK_COMBO_BOX (glade_xml_get_widget (gui, "default_junk_plugin"));
    prefs->plugin_status = GTK_LABEL (glade_xml_get_widget (gui, "plugin_status"));
    prefs->plugin_image = GTK_IMAGE (glade_xml_get_widget (gui, "plugin_image"));
    junk_plugin_setup (GTK_WIDGET (prefs->default_junk_plugin), prefs);

    prefs->junk_header_check = (GtkToggleButton *)glade_xml_get_widget (gui, "junk_header_check");
    prefs->junk_header_tree = (GtkTreeView *)glade_xml_get_widget (gui, "junk_header_tree");
    prefs->junk_header_add = (GtkButton *)glade_xml_get_widget (gui, "junk_header_add");
    prefs->junk_header_remove = (GtkButton *)glade_xml_get_widget (gui, "junk_header_remove");
    prefs->junk_book_lookup = (GtkToggleButton *)glade_xml_get_widget (gui, "lookup_book");
    prefs->junk_lookup_local_only = (GtkToggleButton *)glade_xml_get_widget (gui, "junk_lookup_local_only");
    toggle_button_init (prefs, prefs->junk_book_lookup, FALSE,
                "/apps/evolution/mail/junk/lookup_addressbook",
                G_CALLBACK (junk_book_lookup_button_toggled));

    toggle_button_init (prefs, prefs->junk_lookup_local_only, FALSE,
                "/apps/evolution/mail/junk/lookup_addressbook_local_only",
                G_CALLBACK (toggle_button_toggled));

    junk_book_lookup_button_toggled (prefs->junk_book_lookup, prefs);

    prefs->junk_header_list_store = init_junk_tree ((GtkWidget *)prefs->junk_header_tree, prefs);
    toggle_button_init (prefs, prefs->junk_header_check, FALSE,
                "/apps/evolution/mail/junk/check_custom_header",
                G_CALLBACK (custom_junk_button_toggled));

    custom_junk_button_toggled (prefs->junk_header_check, prefs);
    jh_tree_refill (prefs);
    g_signal_connect (G_OBJECT (prefs->junk_header_add), "clicked", G_CALLBACK (jh_add_cb), prefs);
    g_signal_connect (G_OBJECT (prefs->junk_header_remove), "clicked", G_CALLBACK (jh_remove_cb), prefs);

    /* get our toplevel widget */
    target = em_config_target_new_prefs(ec, prefs->gconf);
    e_config_set_target((EConfig *)ec, (EConfigTarget *)target);
    toplevel = e_config_create_widget((EConfig *)ec);
    gtk_container_add (GTK_CONTAINER (prefs), toplevel);
}

GtkWidget *
em_mailer_prefs_new (EShell *shell)
{
    EMMailerPrefs *new;

    g_return_val_if_fail (E_IS_SHELL (shell), NULL);

    new = (EMMailerPrefs *) g_object_new (em_mailer_prefs_get_type (), NULL);
    em_mailer_prefs_construct (new, shell);

    return (GtkWidget *) new;
}


static struct _EMMailerPrefsHeader *
emmp_header_from_xmldoc (xmlDocPtr doc)
{
    struct _EMMailerPrefsHeader *h;
    xmlNodePtr root;
    xmlChar *name;

    if (doc == NULL)
        return NULL;

    root = doc->children;
    if (strcmp ((char *)root->name, "header") != 0)
        return NULL;

    name = xmlGetProp (root, (const unsigned char *)"name");
    if (name == NULL)
        return NULL;

    h = g_malloc0 (sizeof (struct _EMMailerPrefsHeader));
    h->name = g_strdup ((gchar *)name);
    xmlFree (name);

    if (xmlHasProp (root, (const unsigned char *)"enabled"))
        h->enabled = 1;
    else
        h->enabled = 0;

    return h;
}

/**
 * em_mailer_prefs_header_from_xml
 * @xml: XML configuration data
 *
 * Parses passed XML data, which should be of
 * the format <header name="foo" enabled />, and
 * returns a EMMailerPrefs structure, or NULL if there
 * is an error.
 **/
struct _EMMailerPrefsHeader *
em_mailer_prefs_header_from_xml (const char *xml)
{
    struct _EMMailerPrefsHeader *header;
    xmlDocPtr doc;

    if (!(doc = xmlParseDoc ((unsigned char *) xml)))
        return NULL;

    header = emmp_header_from_xmldoc (doc);
    xmlFreeDoc (doc);

    return header;
}

/**
 * em_mailer_prefs_header_free
 * @header: header to free
 *
 * Frees the memory associated with the passed header
 * structure.
 */
void
em_mailer_prefs_header_free (struct _EMMailerPrefsHeader *header)
{
    if (header == NULL)
        return;

    g_free (header->name);
    g_free (header);
}

/**
 * em_mailer_prefs_header_to_xml
 * @header: header from which to generate XML
 *
 * Returns the passed header as a XML structure,
 * or NULL on error
 */
char *
em_mailer_prefs_header_to_xml (struct _EMMailerPrefsHeader *header)
{
    xmlDocPtr doc;
    xmlNodePtr root;
    xmlChar *xml;
    char *out;
    int size;

    g_return_val_if_fail (header != NULL, NULL);
    g_return_val_if_fail (header->name != NULL, NULL);

    doc = xmlNewDoc ((const unsigned char *)"1.0");

    root = xmlNewDocNode (doc, NULL, (const unsigned char *)"header", NULL);
    xmlSetProp (root, (const unsigned char *)"name", (unsigned char *)header->name);
    if (header->enabled)
        xmlSetProp (root, (const unsigned char *)"enabled", NULL);

    xmlDocSetRootElement (doc, root);
    xmlDocDumpMemory (doc, &xml, &size);
    xmlFreeDoc (doc);

    out = g_malloc (size + 1);
    memcpy (out, xml, size);
    out[size] = '\0';
    xmlFree (xml);

    return out;
}