path: root/modules/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 <gtkhtml/gtkhtml-properties.h>
#include <libxml/tree.h>

#include <shell/e-shell-utils.h>

#include <mail/e-mail-backend.h>
#include <mail/e-mail-junk-options.h>
#include <mail/e-mail-label-manager.h>
#include <mail/e-mail-reader-utils.h>
#include <mail/em-folder-selection-button.h>
#include <mail/em-config.h>

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
};

#define EM_FORMAT_HEADER_XMAILER "x-evolution-mailer"

/* Keep this synchronized with the "show-headers" key
 * in the "org.gnome.evolution.mail" GSettings schema. */
static const gchar *default_headers[] = {
    N_("From"),
    N_("Reply-To"),
    N_("To"),
    N_("Cc"),
    N_("Bcc"),
    N_("Subject"),
    N_("Date"),
    N_("Newsgroups"),
    N_("Face"),
    EM_FORMAT_HEADER_XMAILER /* DO NOT translate */
};

/* for empty trash on exit frequency */
static const struct {
    const gchar *label;
    gint days;
} empty_trash_frequency[] = {
    { N_("On exit, every time"), 0 },
    { N_("On exit, once per day"), 1 },
    { N_("On exit, once per week"), 7 },
    { N_("On exit, once per month"), 30 },
    { N_("Immediately, on folder leave"), -1 }
};

G_DEFINE_TYPE (
    EMMailerPrefs,
    em_mailer_prefs,
    GTK_TYPE_VBOX)

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

    g_object_unref (prefs->builder);
    g_object_unref (prefs->settings);

    /* Chain up to parent's finalize() method. */
    G_OBJECT_CLASS (em_mailer_prefs_parent_class)->finalize (object);
}

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

    object_class = G_OBJECT_CLASS (class);
    object_class->finalize = em_mailer_prefs_finalize;
}

static void
em_mailer_prefs_init (EMMailerPrefs *preferences)
{
    preferences->settings = g_settings_new ("org.gnome.evolution.mail");
}

static gboolean
mailer_prefs_map_milliseconds_to_seconds (GValue *value,
                                          GVariant *variant,
                                          gpointer user_data)
{
    gint32 milliseconds;
    gdouble seconds;

    milliseconds = g_variant_get_int32 (variant);
    seconds = milliseconds / 1000.0;
    g_value_set_double (value, seconds);

    return TRUE;
}

static GVariant *
mailer_prefs_map_seconds_to_milliseconds (const GValue *value,
                                          const GVariantType *expected_type,
                                          gpointer user_data)
{
    gint32 milliseconds;
    gdouble seconds;

    seconds = g_value_get_double (value);
    milliseconds = seconds * 1000;

    return g_variant_new_int32 (milliseconds);
}

static gboolean
mailer_prefs_map_string_to_rgba (GValue *value,
                                 GVariant *variant,
                                 gpointer user_data)
{
    GdkRGBA rgba;
    const gchar *string;
    gboolean success = FALSE;

    string = g_variant_get_string (variant, NULL);
    if (gdk_rgba_parse (&rgba, string)) {
        g_value_set_boxed (value, &rgba);
        success = TRUE;
    }

    return success;
}

static GVariant *
mailer_prefs_map_rgba_to_string (const GValue *value,
                                 const GVariantType *expected_type,
                                 gpointer user_data)
{
    GVariant *variant;
    const GdkRGBA *rgba;

    rgba = g_value_get_boxed (value);
    if (rgba == NULL) {
        variant = g_variant_new_string ("");
    } else {
        gchar *string;

        /* Encode the color manually. */
        string = g_strdup_printf (
            "#%02x%02x%02x",
            ((gint) (rgba->red * 255)) % 255,
            ((gint) (rgba->green * 255)) % 255,
            ((gint) (rgba->blue * 255)) % 255);
        variant = g_variant_new_string (string);
        g_free (string);
    }

    return variant;
}

enum {
    JH_LIST_COLUMN_NAME,
    JH_LIST_COLUMN_VALUE
};

static void
jh_tree_refill (EMMailerPrefs *prefs)
{
    GtkListStore *store = prefs->junk_header_list_store;
    gchar **strv;
    gint ii;

    strv = g_settings_get_strv (prefs->settings, "junk-custom-header");

    gtk_list_store_clear (store);

    for (ii = 0; strv[ii] != NULL; ii++) {
        GtkTreeIter iter;
        gchar **tokens = g_strsplit (strv[ii], "=", 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_strfreev (strv);
}

static void
jh_dialog_entry_changed_cb (GtkEntry *entry,
                            gpointer user_data)
{
    GtkBuilder *builder = GTK_BUILDER (user_data);
    GtkWidget *ok_button, *entry1, *entry2;
    const gchar *name, *value;

    ok_button = e_builder_get_widget (builder, "junk-header-ok");
    entry1 = e_builder_get_widget (builder, "junk-header-name");
    entry2 = e_builder_get_widget (builder, "junk-header-content");

    name = gtk_entry_get_text (GTK_ENTRY (entry1));
    value = gtk_entry_get_text (GTK_ENTRY (entry2));

    gtk_widget_set_sensitive (ok_button, name && *name && value && *value);
}

static void
jh_add_cb (GtkWidget *widget,
           gpointer user_data)
{
    GtkWidget *dialog;
    GtkWidget *entry;
    EMMailerPrefs *prefs = (EMMailerPrefs *) user_data;
    GtkBuilder *builder = gtk_builder_new ();
    gchar *tok;
    const gchar *name, *value;

    e_load_ui_builder_definition (builder, "mail-config.ui");
    dialog = e_builder_get_widget (builder, "add-custom-junk-header");
    jh_dialog_entry_changed_cb (NULL, builder);

    entry = e_builder_get_widget (builder, "junk-header-name");
    g_signal_connect (
        entry, "changed",
        G_CALLBACK (jh_dialog_entry_changed_cb), builder);
    entry = e_builder_get_widget (builder, "junk-header-content");
    g_signal_connect (
        entry, "changed",
        G_CALLBACK (jh_dialog_entry_changed_cb), builder);

    if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT) {
        gchar **strv;
        GPtrArray *array;
        gint ii;

        name = gtk_entry_get_text (GTK_ENTRY (e_builder_get_widget (builder, "junk-header-name")));
        value = gtk_entry_get_text (GTK_ENTRY (e_builder_get_widget (builder, "junk-header-content")));

        strv = g_settings_get_strv (prefs->settings, "junk-custom-header");
        array = g_ptr_array_new ();
        for (ii = 0; strv[ii] != NULL; ii++)
            g_ptr_array_add (array, strv[ii]);
        tok = g_strdup_printf ("%s=%s", name, value);
        g_ptr_array_add (array, tok);
        g_ptr_array_add (array, NULL);
        g_settings_set_strv (prefs->settings, "junk-custom-header", (const gchar * const *) array->pdata);

        g_ptr_array_free (array, TRUE);
        g_strfreev (strv);
    }

    g_object_unref (builder);
    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)) {
        GPtrArray *array = g_ptr_array_new ();
        gchar *name = NULL, *value = NULL;
        gchar **strv;
        gint ii;

        strv = g_settings_get_strv (prefs->settings, "junk-custom-header");
        gtk_tree_model_get (model, &iter, JH_LIST_COLUMN_NAME, &name, JH_LIST_COLUMN_VALUE, &value, -1);
        for (ii = 0; strv[ii] != NULL; ii++) {
            gchar *test;
            gint len = strlen (name);
            test = strncmp (strv[ii], name, len) == 0 ? (gchar *) strv[ii] + len : NULL;

            if (test) {
                test++;
                if (strcmp (test, value) == 0)
                    continue;
            }

            g_ptr_array_add (array, strv[ii]);
        }

        g_ptr_array_add (array, NULL);

        g_settings_set_strv (prefs->settings, "junk-custom-header", (const gchar * const *) array->pdata);

        g_strfreev (strv);
        g_ptr_array_free (array, TRUE);
        g_free (name);
        g_free (value);

        jh_tree_refill (prefs);
    }
}

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

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

    return store;
}

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 gchar *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 gchar *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) {
        gchar *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);
            g_free (header_name);
            return;
        }

        g_free (header_name);

        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)
{
    GVariantBuilder builder;
    GtkTreeModel *model;
    GVariant *variant;
    GtkTreeIter iter;
    gboolean valid;

    g_variant_builder_init (&builder, G_VARIANT_TYPE ("a(sb)"));

    model = GTK_TREE_MODEL (prefs->header_list_store);
    valid = gtk_tree_model_get_iter_first (model, &iter);

    while (valid) {
        gchar *name = NULL;
        gboolean enabled = TRUE;

        gtk_tree_model_get (
            model, &iter,
            HEADER_LIST_HEADER_COLUMN, &name,
            HEADER_LIST_ENABLED_COLUMN, &enabled,
            -1);

        if (name != NULL) {
            g_variant_builder_add (
                &builder, "(sb)", name, enabled);
            g_free (name);
        }

        valid = gtk_tree_model_iter_next (model, &iter);
    }

    variant = g_variant_builder_end (&builder);
    g_settings_set_value (prefs->settings, "show-headers", variant);
}

static void
emmp_header_list_enabled_toggled (GtkCellRendererToggle *cell,
                                  const gchar *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;
    gint 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;
    GtkTreeIter iter;

    selection = gtk_tree_view_get_selection (prefs->header_list);

    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 gchar *key;

    key = g_object_get_data ((GObject *) toggle, "key");
    g_settings_set_boolean (
        prefs->settings, key,
        gtk_toggle_button_get_active (toggle));
}

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,
                    gint not,
                    const gchar *key,
                    GCallback toggled)
{
    gboolean v_bool;

    v_bool = g_settings_get_boolean (prefs->settings, key);
    gtk_toggle_button_set_active (toggle, not ? !v_bool : v_bool);

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

    if (!g_settings_is_writable (prefs->settings, key))
        gtk_widget_set_sensitive (GTK_WIDGET (toggle), FALSE);
}

static void
trash_days_changed (GtkComboBox *combo_box,
                    EMMailerPrefs *prefs)
{
    gint index;

    index = gtk_combo_box_get_active (combo_box);
    g_return_if_fail (index >= 0);
    g_return_if_fail (index < G_N_ELEMENTS (empty_trash_frequency));

    g_settings_set_int (
        prefs->settings,
        "trash-empty-on-exit-days",
        empty_trash_frequency[index].days);
}

static void
emmp_empty_trash_init (EMMailerPrefs *prefs,
                       GtkComboBox *combo_box)
{
    gint days, hist = 0, ii;
    GtkListStore *store;
    GtkTreeIter iter;

    days = g_settings_get_int (
        prefs->settings,
        "trash-empty-on-exit-days");

    store = GTK_LIST_STORE (gtk_combo_box_get_model (combo_box));
    gtk_list_store_clear (store);

    for (ii = 0; ii < G_N_ELEMENTS (empty_trash_frequency); ii++) {
        if (days == empty_trash_frequency[ii].days ||
            (empty_trash_frequency[ii].days != -1 && days > empty_trash_frequency[ii].days))
            hist = ii;

        gtk_list_store_append (store, &iter);
        gtk_list_store_set (
            store, &iter,
            0,  gettext (empty_trash_frequency[ii].label),
            -1);
    }

    g_signal_connect (
        combo_box, "changed",
        G_CALLBACK (trash_days_changed), prefs);

    gtk_combo_box_set_active (combo_box, hist);
}

static void
junk_days_changed (GtkComboBox *combo_box,
                   EMMailerPrefs *prefs)
{
    gint index;

    index = gtk_combo_box_get_active (combo_box);
    g_return_if_fail (index >= 0);
    g_return_if_fail (index < G_N_ELEMENTS (empty_trash_frequency));

    g_settings_set_int (
        prefs->settings,
        "junk-empty-on-exit-days",
        empty_trash_frequency[index].days);
}

static void
emmp_empty_junk_init (EMMailerPrefs *prefs,
                      GtkComboBox *combo_box)
{
    gint days, hist = 0, ii;
    GtkListStore *store;
    GtkTreeIter iter;

    days = g_settings_get_int (
        prefs->settings,
        "junk-empty-on-exit-days");

    store = GTK_LIST_STORE (gtk_combo_box_get_model (combo_box));
    gtk_list_store_clear (store);

    for (ii = 0; ii < G_N_ELEMENTS (empty_trash_frequency); ii++) {
        if (days == empty_trash_frequency[ii].days ||
            (empty_trash_frequency[ii].days != -1 && days >= empty_trash_frequency[ii].days))
            hist = ii;

        gtk_list_store_append (store, &iter);
        gtk_list_store_set (
            store, &iter,
            0, gettext (empty_trash_frequency[ii].label),
            -1);
    }

    g_signal_connect (
        combo_box, "changed",
        G_CALLBACK (junk_days_changed), prefs);

    gtk_combo_box_set_active (combo_box, hist);
}

static void
image_loading_policy_always_cb (GtkToggleButton *toggle_button)
{
    if (gtk_toggle_button_get_active (toggle_button)) {
        GSettings *settings;

        settings = g_settings_new ("org.gnome.evolution.mail");

        g_settings_set_enum (
            settings, "image-loading-policy",
            E_MAIL_IMAGE_LOADING_POLICY_ALWAYS);

        g_object_unref (settings);
    }
}

static void
image_loading_policy_sometimes_cb (GtkToggleButton *toggle_button)
{
    if (gtk_toggle_button_get_active (toggle_button)) {
        GSettings *settings;

        settings = g_settings_new ("org.gnome.evolution.mail");

        g_settings_set_enum (
            settings, "image-loading-policy",
            E_MAIL_IMAGE_LOADING_POLICY_SOMETIMES);

        g_object_unref (settings);
    }
}

static void
image_loading_policy_never_cb (GtkToggleButton *toggle_button)
{
    if (gtk_toggle_button_get_active (toggle_button)) {
        GSettings *settings;

        settings = g_settings_new ("org.gnome.evolution.mail");

        g_settings_set_enum (
            settings, "image-loading-policy",
            E_MAIL_IMAGE_LOADING_POLICY_NEVER);

        g_object_unref (settings);
    }
}

static GtkWidget *
emmp_widget_glade (EConfig *ec,
                   EConfigItem *item,
                   GtkWidget *parent,
                   GtkWidget *old,
                   gint position,
                   gpointer data)
{
    EMMailerPrefs *prefs = data;

    return e_builder_get_widget (prefs->builder, item->label);
}

/* plugin meta-data */
static EMConfigItem emmp_items[] = {
    { E_CONFIG_BOOK, (gchar *) "", (gchar *) "preferences_toplevel", emmp_widget_glade },
    { E_CONFIG_PAGE, (gchar *) "00.general", (gchar *) "vboxMailGeneral", emmp_widget_glade },
    { E_CONFIG_SECTION, (gchar *) "00.general/10.display", (gchar *) "message-display-vbox", emmp_widget_glade },
    { E_CONFIG_SECTION, (gchar *) "00.general/20.delete", (gchar *) "delete-mail-vbox", emmp_widget_glade },
    { E_CONFIG_PAGE, (gchar *) "10.html", (gchar *) "vboxHtmlMail", emmp_widget_glade },
    { E_CONFIG_SECTION, (gchar *) "10.html/00.general", (gchar *) "html-general-vbox", emmp_widget_glade },
    { E_CONFIG_SECTION, (gchar *) "10.html/10.images", (gchar *) "loading-images-vbox", emmp_widget_glade },
    { E_CONFIG_PAGE, (gchar *) "20.labels", (gchar *) "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, (gchar *) "30.headers", (gchar *) "vboxHeaderTab", emmp_widget_glade },
    /* no subvbox for section { E_CONFIG_PAGE, "30.headers/00.headers", "vbox199", emmp_widget_glade }, */
    { E_CONFIG_PAGE, (gchar *) "40.junk", (gchar *) "vboxJunk", emmp_widget_glade },
    /* no subvbox for section { E_CONFIG_SECTION, "40.junk/00.general", xxx, emmp_widget_glade } */
    { E_CONFIG_SECTION_TABLE, (gchar *) "40.junk/10.options", (gchar *) "junk-general-table", emmp_widget_glade },
};

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

    g_slist_free (items);
}

static void
em_mailer_prefs_construct (EMMailerPrefs *prefs,
                           EMailSession *session,
                           EShell *shell)
{
    GSettings *settings;
    GHashTable *default_header_hash;
    GtkWidget *toplevel;
    GtkWidget *container;
    GtkWidget *table;
    GtkWidget *widget;
    GtkTreeModel *tree_model;
    GtkTreeSelection *selection;
    GtkCellRenderer *renderer;
    GVariant *variant;
    gsize ii, n_children;
    gboolean locked;
    gboolean writable;
    gint val, i;
    EMConfig *ec;
    EMConfigTargetPrefs *target;
    GSList *l;

    settings = g_settings_new ("org.gnome.evolution.mail");

    /* Make sure our custom widget classes are registered with
     * GType before we load the GtkBuilder definition file. */
    E_TYPE_MAIL_JUNK_OPTIONS;
    EM_TYPE_FOLDER_SELECTION_BUTTON;

    prefs->builder = gtk_builder_new ();
    e_load_ui_builder_definition (prefs->builder, "mail-config.ui");

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

    /* General tab */

    widget = e_builder_get_widget (prefs->builder, "chkCheckMailOnStart");
    g_settings_bind (
        settings, "send-recv-on-start",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);

    widget = e_builder_get_widget (prefs->builder, "chkCheckMailInAllOnStart");
    g_settings_bind (
        settings, "send-recv-all-on-start",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);
    g_settings_bind (
        settings, "send-recv-on-start",
        widget, "sensitive",
        G_SETTINGS_BIND_GET);

    /* Message Display */

    widget = e_builder_get_widget (prefs->builder, "chkMarkTimeout");
    g_settings_bind (
        settings, "mark-seen",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);

    /* 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 = e_builder_get_widget (prefs->builder, "spinMarkTimeout");
    g_settings_bind_with_mapping (
        settings, "mark-seen-timeout",
        widget, "value",
        G_SETTINGS_BIND_DEFAULT,
        mailer_prefs_map_milliseconds_to_seconds,
        mailer_prefs_map_seconds_to_milliseconds,
        NULL, (GDestroyNotify) NULL);
    g_settings_bind (
        settings, "mark-seen",
        widget, "sensitive",
        G_SETTINGS_BIND_GET);

    widget = e_builder_get_widget (prefs->builder, "view-check");
    g_settings_bind (
        settings, "global-view-setting",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);

    widget = e_charset_combo_box_new ();
    container = e_builder_get_widget (prefs->builder, "hboxDefaultCharset");
    gtk_label_set_mnemonic_widget (
        GTK_LABEL (e_builder_get_widget (
        prefs->builder, "lblDefaultCharset")), widget);
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
    gtk_widget_show (widget);
    g_settings_bind (
        settings, "charset",
        widget, "charset",
        G_SETTINGS_BIND_DEFAULT);

    widget = e_builder_get_widget (prefs->builder, "chkHighlightCitations");
    g_settings_bind (
        settings, "mark-citations",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);

    widget = e_builder_get_widget (prefs->builder, "colorButtonHighlightCitations");
    g_settings_bind_with_mapping (
        settings, "citation-color",
        widget, "rgba",
        G_SETTINGS_BIND_DEFAULT,
        mailer_prefs_map_string_to_rgba,
        mailer_prefs_map_rgba_to_string,
        NULL, (GDestroyNotify) NULL);
    g_settings_bind (
        settings, "mark-citations",
        widget, "sensitive",
        G_SETTINGS_BIND_DEFAULT);

    widget = e_builder_get_widget (prefs->builder, "thread-by-subject");
    g_settings_bind (
        settings, "thread-subject",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);

    /* Deleting Mail */
    widget = e_builder_get_widget (prefs->builder, "chkEmptyTrashOnExit");
    g_settings_bind (
        settings, "trash-empty-on-exit",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);

    widget = e_builder_get_widget (prefs->builder, "comboboxEmptyTrashDays");
    g_settings_bind (
        settings, "trash-empty-on-exit",
        widget, "sensitive",
        G_SETTINGS_BIND_GET);
    emmp_empty_trash_init (prefs, GTK_COMBO_BOX (widget));

    widget = e_builder_get_widget (prefs->builder, "chkConfirmExpunge");
    g_settings_bind (
        settings, "prompt-on-expunge",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);

    /* Mail Fonts */
    widget = e_builder_get_widget (prefs->builder, "radFontUseSame");
    g_settings_bind (
        settings, "use-custom-font",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT |
        G_SETTINGS_BIND_INVERT_BOOLEAN);

    widget = e_builder_get_widget (prefs->builder, "FontFixed");
    g_settings_bind (
        settings, "monospace-font",
        widget, "font-name",
        G_SETTINGS_BIND_DEFAULT);
    g_settings_bind (
        settings, "use-custom-font",
        widget, "sensitive",
        G_SETTINGS_BIND_GET);

    widget = e_builder_get_widget (prefs->builder, "FontVariable");
    g_settings_bind (
        settings, "variable-width-font",
        widget, "font-name",
        G_SETTINGS_BIND_DEFAULT);
    g_settings_bind (
        settings, "use-custom-font",
        widget, "sensitive",
        G_SETTINGS_BIND_GET);

    /* HTML Mail tab */

    /* Loading Images */
    writable = g_settings_is_writable (
        prefs->settings, "image-loading-policy");

    val = g_settings_get_enum (prefs->settings, "image-loading-policy");
    widget = e_builder_get_widget (
        prefs->builder, "radImagesNever");
    gtk_toggle_button_set_active (
        GTK_TOGGLE_BUTTON (widget),
        val == E_MAIL_IMAGE_LOADING_POLICY_NEVER);
    gtk_widget_set_sensitive (widget, writable);

    g_signal_connect (
        widget, "toggled",
        G_CALLBACK (image_loading_policy_never_cb), NULL);

    widget = e_builder_get_widget (
        prefs->builder, "radImagesSometimes");
    gtk_toggle_button_set_active (
        GTK_TOGGLE_BUTTON (widget),
        val == E_MAIL_IMAGE_LOADING_POLICY_SOMETIMES);
    gtk_widget_set_sensitive (widget, writable);

    g_signal_connect (
        widget, "toggled",
        G_CALLBACK (image_loading_policy_sometimes_cb), NULL);

    widget = e_builder_get_widget (
        prefs->builder, "radImagesAlways");
    gtk_toggle_button_set_active (
        GTK_TOGGLE_BUTTON (widget),
        val == E_MAIL_IMAGE_LOADING_POLICY_ALWAYS);
    gtk_widget_set_sensitive (widget, writable);

    g_signal_connect (
        widget, "toggled",
        G_CALLBACK (image_loading_policy_always_cb), NULL);

    widget = e_builder_get_widget (prefs->builder, "chkShowAnimatedImages");
    g_settings_bind (
        settings, "show-animated-images",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);

    widget = e_builder_get_widget (prefs->builder, "chkPromptWantHTML");
    g_settings_bind (
        settings, "prompt-on-unwanted-html",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);

    container = e_builder_get_widget (prefs->builder, "labels-alignment");
    widget = e_mail_label_manager_new ();
    gtk_container_add (GTK_CONTAINER (container), widget);
    gtk_widget_show (widget);

    g_object_bind_property (
        session, "label-store",
        widget, "list-store",
        G_BINDING_SYNC_CREATE);

    /* headers */
    locked = !g_settings_is_writable (prefs->settings, "headers");

    widget = e_builder_get_widget (prefs->builder, "photo_show");
    g_settings_bind (
        settings, "show-sender-photo",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);

    /* always de-sensitised until the user types something in the entry */
    prefs->add_header = GTK_BUTTON (e_builder_get_widget (prefs->builder, "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 (e_builder_get_widget (prefs->builder, "cmdHeadersRemove"));
    gtk_widget_set_sensitive ((GtkWidget *) prefs->remove_header, FALSE);

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

    prefs->header_list = GTK_TREE_VIEW (e_builder_get_widget (prefs->builder, "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);

    /* Populate the list store with entries.  Firstly we add all the
     * default headers, and then we add read header configuration out of
     * settings. If a header in settings is a default header, we update
     * the enabled flag accordingly. */

    /* FIXME Split the headers section into a separate widget to
     *       better isolate its functionality.  There's too much
     *       complexity to just embed it like this. */

    default_header_hash = g_hash_table_new_full (
        (GHashFunc) g_str_hash,
        (GEqualFunc) g_str_equal,
        (GDestroyNotify) g_free,
        (GDestroyNotify) gtk_tree_path_free);

    tree_model = GTK_TREE_MODEL (prefs->header_list_store);

    for (ii = 0; ii < G_N_ELEMENTS (default_headers); ii++) {
        GtkTreeIter iter;
        const gchar *display_name;
        const gchar *header_name;
        gboolean enabled;

        header_name = default_headers[ii];
        if (g_strcmp0 (header_name, EM_FORMAT_HEADER_XMAILER) == 0) {
            display_name = _("Mailer");
            enabled = FALSE;
        } else {
            display_name = _(header_name);
            enabled = TRUE;
        }

        gtk_list_store_append (
            GTK_LIST_STORE (tree_model), &iter);

        gtk_list_store_set (
            GTK_LIST_STORE (tree_model), &iter,
            HEADER_LIST_NAME_COLUMN, display_name,
            HEADER_LIST_ENABLED_COLUMN, enabled,
            HEADER_LIST_IS_DEFAULT_COLUMN, TRUE,
            HEADER_LIST_HEADER_COLUMN, header_name,
            -1);

        g_hash_table_insert (
            default_header_hash, g_strdup (header_name),
            gtk_tree_model_get_path (tree_model, &iter));
    }

    variant = g_settings_get_value (prefs->settings, "show-headers");
    n_children = g_variant_n_children (variant);

    for (ii = 0; ii < n_children; ii++) {
        GtkTreeIter iter;
        GtkTreePath *path;
        const gchar *header_name = NULL;
        gboolean enabled = FALSE;

        g_variant_get_child (
            variant, ii, "(&sb)", &header_name, &enabled);

        if (header_name == NULL) {
            g_warn_if_reached ();
            continue;
        }

        path = g_hash_table_lookup (default_header_hash, header_name);
        if (path != NULL) {
            gtk_tree_model_get_iter (tree_model, &iter, path);
            gtk_list_store_set (
                GTK_LIST_STORE (tree_model), &iter,
                HEADER_LIST_ENABLED_COLUMN, enabled,
                -1);
        } else {
            gtk_list_store_append (
                GTK_LIST_STORE (tree_model), &iter);

            gtk_list_store_set (
                GTK_LIST_STORE (tree_model), &iter,
                HEADER_LIST_NAME_COLUMN, _(header_name),
                HEADER_LIST_ENABLED_COLUMN, enabled,
                HEADER_LIST_IS_DEFAULT_COLUMN, FALSE,
                HEADER_LIST_HEADER_COLUMN, header_name,
                -1);
        }
    }

    g_variant_unref (variant);

    g_hash_table_destroy (default_header_hash);

    /* date/time format */
    table = e_builder_get_widget (prefs->builder, "datetime-format-table");
    /* To Translators: 'Table column' is a label for configurable date/time format for table columns showing a date in message list */
    e_datetime_format_add_setup_widget (table, 0, "mail", "table",  DTFormatKindDateTime, _("_Table column:"));
    /* To Translators: 'Date header' is a label for configurable date/time format for 'Date' header in mail message window/preview */
    e_datetime_format_add_setup_widget (table, 1, "mail", "header", DTFormatKindDateTime, _("_Date header:"));
    widget = gtk_check_button_new_with_mnemonic (_("Show _original header value"));
    gtk_widget_show (widget);
    gtk_table_attach ((GtkTable *) table, widget, 0, 3, 2, 3, GTK_EXPAND | GTK_FILL, 0, 12, 0);
    g_settings_bind (
        settings, "show-real-date",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);

    /* Junk prefs */
    widget = e_builder_get_widget (prefs->builder, "chkCheckIncomingMail");
    g_settings_bind (
        settings, "junk-check-incoming",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);

    widget = e_builder_get_widget (prefs->builder, "junk_empty_check");
    g_settings_bind (
        settings, "junk-empty-on-exit",
        widget, "active",
        G_SETTINGS_BIND_DEFAULT);

    widget = e_builder_get_widget (prefs->builder, "junk_empty_combobox");
    emmp_empty_junk_init (prefs, GTK_COMBO_BOX (widget));
    g_settings_bind (
        settings, "junk-empty-on-exit",
        widget, "sensitive",
        G_SETTINGS_BIND_GET);

    widget = e_builder_get_widget (prefs->builder, "junk-module-options");
    e_mail_junk_options_set_session (E_MAIL_JUNK_OPTIONS (widget), session);

    prefs->junk_header_check = (GtkToggleButton *) e_builder_get_widget (prefs->builder, "junk_header_check");
    prefs->junk_header_tree = (GtkTreeView *) e_builder_get_widget (prefs->builder, "junk_header_tree");
    prefs->junk_header_add = (GtkButton *) e_builder_get_widget (prefs->builder, "junk_header_add");
    prefs->junk_header_remove = (GtkButton *) e_builder_get_widget (prefs->builder, "junk_header_remove");
    prefs->junk_book_lookup = (GtkToggleButton *) e_builder_get_widget (prefs->builder, "lookup_book");
    prefs->junk_lookup_local_only = (GtkToggleButton *) e_builder_get_widget (prefs->builder, "junk_lookup_local_only");
    toggle_button_init (
        prefs, prefs->junk_book_lookup,
        FALSE, "junk-lookup-addressbook",
        G_CALLBACK (junk_book_lookup_button_toggled));

    toggle_button_init (
        prefs, prefs->junk_lookup_local_only,
        FALSE, "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, "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 (
        prefs->junk_header_add, "clicked",
        G_CALLBACK (jh_add_cb), prefs);
    g_signal_connect (
        prefs->junk_header_remove, "clicked",
        G_CALLBACK (jh_remove_cb), prefs);

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

    g_object_unref (settings);
}

GtkWidget *
em_mailer_prefs_new (EPreferencesWindow *window)
{
    EMMailerPrefs *new;
    EShell *shell;
    EShellBackend *shell_backend;
    EMailBackend *backend;
    EMailSession *session;

    /* XXX Figure out a better way to get the EMailSession. */
    shell = e_preferences_window_get_shell (window);
    shell_backend = e_shell_get_backend_by_name (shell, "mail");

    backend = E_MAIL_BACKEND (shell_backend);
    session = e_mail_backend_get_session (backend);

    new = g_object_new (EM_TYPE_MAILER_PREFS, NULL);

    /* FIXME Kill this function. */
    em_mailer_prefs_construct (new, session, shell);

    return GTK_WIDGET (new);
}