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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Jeffrey Stedfast <fejj@ximian.com>
 *
 *  Copyright 2002-2003 Ximian, Inc. (www.ximian.com)
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

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

#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>

#include "e-util/e-signature.h"
#include "e-util/e-signature-list.h"

#include "em-composer-prefs.h"
#include "composer/e-msg-composer.h"

#include <bonobo/bonobo-generic-factory.h>

#include <libedataserver/e-iconv.h>
#include <misc/e-gui-utils.h>

#include <gdk/gdkkeysyms.h>

#include <gtk/gtkentry.h>
#include <gtk/gtktreemodel.h>
#include <gtk/gtkliststore.h>
#include <gtk/gtktreeselection.h>
#include <gtk/gtktreeview.h>
#include <gtk/gtkdialog.h>
#include <gtk/gtkbutton.h>
#include <gtk/gtktogglebutton.h>
#include <gtk/gtkoptionmenu.h>
#include <gtk/gtkcellrenderertoggle.h>
#include <gtk/gtkcellrenderertext.h>
#include <gtk/gtkimage.h>
#include <gtk/gtkstock.h>
#include <gtk/gtkcolorbutton.h>
#include <gtk/gtkfilechooserbutton.h>

#include <gtkhtml/gtkhtml.h>

#include <glib/gstdio.h>

#include "misc/e-charset-picker.h"
#include "e-util/e-error.h"
#include "e-util/e-util-private.h"
#include "e-util/e-icon-factory.h"

#include "mail-config.h"
#include "mail-signature-editor.h"
#include "em-config.h"

#define d(x)

static void em_composer_prefs_class_init (EMComposerPrefsClass *class);
static void em_composer_prefs_init       (EMComposerPrefs *dialog);
static void em_composer_prefs_destroy    (GtkObject *obj);
static void em_composer_prefs_finalise   (GObject *obj);


static GtkVBoxClass *parent_class = NULL;


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

    if (!type) {
        static const GTypeInfo info = {
            sizeof (EMComposerPrefsClass),
            NULL, NULL,
            (GClassInitFunc) em_composer_prefs_class_init,
            NULL, NULL,
            sizeof (EMComposerPrefs),
            0,
            (GInstanceInitFunc) em_composer_prefs_init,
        };

        type = g_type_register_static (gtk_vbox_get_type (), "EMComposerPrefs", &info, 0);
    }

    return type;
}

static void
em_composer_prefs_class_init (EMComposerPrefsClass *klass)
{
    GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
    GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass);

    parent_class = g_type_class_ref (gtk_vbox_get_type ());

    object_class->destroy = em_composer_prefs_destroy;
    gobject_class->finalize = em_composer_prefs_finalise;
}

static void
em_composer_prefs_init (EMComposerPrefs *prefs)
{
    prefs->enabled_pixbuf = e_icon_factory_get_icon ("stock_mark", E_ICON_SIZE_MENU);
    prefs->sig_hash = g_hash_table_new_full (
        g_direct_hash, g_direct_equal,
        (GDestroyNotify) NULL,
        (GDestroyNotify) gtk_tree_row_reference_free);
}

static void
em_composer_prefs_finalise (GObject *obj)
{
    EMComposerPrefs *prefs = (EMComposerPrefs *) obj;

    g_object_unref (prefs->gui);
    g_object_unref (prefs->enabled_pixbuf);

    g_hash_table_destroy (prefs->sig_hash);

        G_OBJECT_CLASS (parent_class)->finalize (obj);
}

static void
em_composer_prefs_destroy (GtkObject *obj)
{
    EMComposerPrefs *prefs = (EMComposerPrefs *) obj;
    ESignatureList *signatures;

    signatures = mail_config_get_signatures ();

    if (prefs->sig_added_id != 0) {
        g_signal_handler_disconnect (signatures, prefs->sig_added_id);
        prefs->sig_added_id = 0;
    }

    if (prefs->sig_removed_id != 0) {
        g_signal_handler_disconnect (signatures, prefs->sig_removed_id);
        prefs->sig_removed_id = 0;
    }

    if (prefs->sig_changed_id != 0) {
        g_signal_handler_disconnect (signatures, prefs->sig_changed_id);
        prefs->sig_changed_id = 0;
    }

    GTK_OBJECT_CLASS (parent_class)->destroy (obj);
}


static void
sig_load_preview (EMComposerPrefs *prefs, ESignature *sig)
{
    char *str;

    if (!sig) {
        gtk_html_load_from_string (GTK_HTML (prefs->sig_preview), " ", 1);
        return;
    }

    if (sig->script)
        str = mail_config_signature_run_script (sig->filename);
    else
        str = e_msg_composer_get_sig_file_content (sig->filename, sig->html);
    if (!str)
        str = g_strdup ("");

    /* printf ("HTML: %s\n", str); */
    if (sig->html) {
        gtk_html_load_from_string (GTK_HTML (prefs->sig_preview), str, strlen (str));
    } else {
        GtkHTMLStream *stream;
        int len;

        len = strlen (str);
        stream = gtk_html_begin_content (GTK_HTML (prefs->sig_preview), "text/html; charset=utf-8");
        gtk_html_write (GTK_HTML (prefs->sig_preview), stream, "<PRE>", 5);
        if (len)
            gtk_html_write (GTK_HTML (prefs->sig_preview), stream, str, len);
        gtk_html_write (GTK_HTML (prefs->sig_preview), stream, "</PRE>", 6);
        gtk_html_end (GTK_HTML (prefs->sig_preview), stream, GTK_HTML_STREAM_OK);
    }

    g_free (str);
}

static void
signature_added (ESignatureList *signatures, ESignature *sig, EMComposerPrefs *prefs)
{
    GtkTreeRowReference *row;
    GtkTreeModel *model;
    GtkTreePath *path;
    GtkTreeIter iter;

    /* autogen signature is special */
    if (sig->autogen)
        return;

    model = gtk_tree_view_get_model (prefs->sig_list);
    gtk_list_store_append ((GtkListStore *) model, &iter);
    gtk_list_store_set ((GtkListStore *) model, &iter, 0, sig->name, 1, sig, -1);

    path = gtk_tree_model_get_path (model, &iter);
    row = gtk_tree_row_reference_new (model, path);
    gtk_tree_path_free (path);

    g_hash_table_insert (prefs->sig_hash, sig, row);
}

static void
signature_removed (ESignatureList *signatures, ESignature *sig, EMComposerPrefs *prefs)
{
    GtkTreeRowReference *row;
    GtkTreeModel *model;
    GtkTreePath *path;
    GtkTreeIter iter;

    if (!(row = g_hash_table_lookup (prefs->sig_hash, sig)))
        return;

    model = gtk_tree_view_get_model (prefs->sig_list);
    path = gtk_tree_row_reference_get_path (row);
    g_hash_table_remove (prefs->sig_hash, sig);

    if (!gtk_tree_model_get_iter (model, &iter, path)) {
        gtk_tree_path_free (path);
        return;
    }

    gtk_list_store_remove ((GtkListStore *) model, &iter);
}

static void
signature_changed (ESignatureList *signatures, ESignature *sig, EMComposerPrefs *prefs)
{
    GtkTreeSelection *selection;
    GtkTreeRowReference *row;
    GtkTreeModel *model;
    GtkTreePath *path;
    GtkTreeIter iter;
    ESignature *cur;

    if (!(row = g_hash_table_lookup (prefs->sig_hash, sig)))
        return;

    model = gtk_tree_view_get_model (prefs->sig_list);
    path = gtk_tree_row_reference_get_path (row);

    if (!gtk_tree_model_get_iter (model, &iter, path)) {
        gtk_tree_path_free (path);
        return;
    }

    gtk_tree_path_free (path);

    gtk_list_store_set ((GtkListStore *) model, &iter, 0, sig->name, -1);

    selection = gtk_tree_view_get_selection (prefs->sig_list);
    if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
        gtk_tree_model_get (model, &iter, 1, &cur, -1);
        if (cur == sig)
            sig_load_preview (prefs, sig);
    }
}

static void
sig_edit_cb (GtkWidget *widget, EMComposerPrefs *prefs)
{
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkWidget *parent;
    GtkTreeIter iter;
    ESignature *sig;

    selection = gtk_tree_view_get_selection (prefs->sig_list);
    if (!gtk_tree_selection_get_selected (selection, &model, &iter))
        return;

    gtk_tree_model_get (model, &iter, 1, &sig, -1);

    if (!sig->script) {
        /* normal signature */
        if (!sig->filename || *sig->filename == '\0') {
            g_free (sig->filename);
            sig->filename = g_strdup (_("Unnamed"));
        }

        parent = gtk_widget_get_toplevel ((GtkWidget *) prefs);
        parent = GTK_WIDGET_TOPLEVEL (parent) ? parent : NULL;

        mail_signature_editor (sig, (GtkWindow *) parent, FALSE);
    } else {
        /* signature script */
        GtkWidget *entry;

        entry = glade_xml_get_widget (prefs->sig_script_gui, "filechooserbutton_add_script");
        gtk_file_chooser_set_filename (GTK_FILE_CHOOSER (entry), sig->filename);

        entry = glade_xml_get_widget (prefs->sig_script_gui, "entry_add_script_name");
        gtk_entry_set_text (GTK_ENTRY (entry), sig->name);

        g_object_set_data ((GObject *) entry, "sig", sig);

        gtk_window_present ((GtkWindow *) prefs->sig_script_dialog);
    }
}

void
em_composer_prefs_new_signature (GtkWindow *parent, gboolean html)
{
    ESignature *sig;

    sig = mail_config_signature_new (NULL, FALSE, html);
    mail_signature_editor (sig, parent, TRUE);
}

static void
sig_delete_cb (GtkWidget *widget, EMComposerPrefs *prefs)
{
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter;
    ESignature *sig;

    selection = gtk_tree_view_get_selection (prefs->sig_list);

    if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
        gtk_tree_model_get (model, &iter, 1, &sig, -1);
        mail_config_remove_signature (sig);
    }
    gtk_widget_grab_focus ((GtkWidget *)prefs->sig_list);
}

static void
sig_add_cb (GtkWidget *widget, EMComposerPrefs *prefs)
{
    GConfClient *gconf;
    gboolean send_html;
    GtkWidget *parent;

    gconf = mail_config_get_gconf_client ();
    send_html = gconf_client_get_bool (gconf, "/apps/evolution/mail/composer/send_html", NULL);

    parent = gtk_widget_get_toplevel ((GtkWidget *) prefs);
    parent = GTK_WIDGET_TOPLEVEL (parent) ? parent : NULL;

    em_composer_prefs_new_signature ((GtkWindow *) parent, send_html);
    gtk_widget_grab_focus ((GtkWidget *)prefs->sig_list);
}

static void
sig_add_script_response (GtkWidget *widget, int button, EMComposerPrefs *prefs)
{
    char *script, **argv = NULL;
    GtkWidget *entry;
    const char *name;
    int argc;

    if (button == GTK_RESPONSE_ACCEPT) {
        entry = glade_xml_get_widget (prefs->sig_script_gui, "filechooserbutton_add_script");
        script = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (entry));

        entry = glade_xml_get_widget (prefs->sig_script_gui, "entry_add_script_name");
        name = gtk_entry_get_text (GTK_ENTRY (entry));
        if (script && *script && g_shell_parse_argv (script, &argc, &argv, NULL)) {
            struct stat st;

            if (g_stat (argv[0], &st) == 0 && S_ISREG (st.st_mode) && g_access (argv[0], X_OK) == 0) {
                ESignature *sig;

                if ((sig = g_object_get_data ((GObject *) entry, "sig"))) {
                    /* we're just editing an existing signature script */
                    g_free (sig->name);
                    sig->name = g_strdup (name);
                    g_free(sig->filename);
                    sig->filename = g_strdup(script);
                    e_signature_list_change (mail_config_get_signatures (), sig);
                } else {
                    sig = mail_config_signature_new (script, TRUE, TRUE);
                    sig->name = g_strdup (name);

                    e_signature_list_add (mail_config_get_signatures (), sig);
                    g_object_unref (sig);
                }

                mail_config_save_signatures();

                gtk_widget_hide (prefs->sig_script_dialog);
                g_strfreev (argv);
                g_free (script);

                return;
            }
        }

        e_error_run((GtkWindow *)prefs->sig_script_dialog, "mail:signature-notscript", argv ? argv[0] : script, NULL);
        g_strfreev (argv);
        g_free (script);
        return;
    }

    gtk_widget_hide (widget);
}

static void
sig_add_script_cb (GtkWidget *widget, EMComposerPrefs *prefs)
{
    GtkWidget *entry;

    entry = glade_xml_get_widget (prefs->sig_script_gui, "entry_add_script_name");
    gtk_entry_set_text (GTK_ENTRY (entry), _("Unnamed"));

    g_object_set_data ((GObject *) entry, "sig", NULL);

    gtk_window_present ((GtkWindow *) prefs->sig_script_dialog);
}

static void
sig_selection_changed (GtkTreeSelection *selection, EMComposerPrefs *prefs)
{
    GtkTreeModel *model;
    GtkTreeIter iter;
    ESignature *sig;
    int state;

    state = gtk_tree_selection_get_selected (selection, &model, &iter);
    if (state) {
        gtk_tree_model_get (model, &iter, 1, &sig, -1);
        sig_load_preview (prefs, sig);
    } else
        sig_load_preview (prefs, NULL);

    gtk_widget_set_sensitive ((GtkWidget *) prefs->sig_delete, state);
    gtk_widget_set_sensitive ((GtkWidget *) prefs->sig_edit, state);
}

static void
sig_fill_list (EMComposerPrefs *prefs)
{
    ESignatureList *signatures;
    GtkListStore *model;
    EIterator *it;

    model = (GtkListStore *) gtk_tree_view_get_model (prefs->sig_list);
    gtk_list_store_clear (model);

    signatures = mail_config_get_signatures ();
    it = e_list_get_iterator ((EList *) signatures);

    while (e_iterator_is_valid (it)) {
        ESignature *sig;

        sig = (ESignature *) e_iterator_get (it);
        signature_added (signatures, sig, prefs);

        e_iterator_next (it);
    }

    g_object_unref (it);

    gtk_widget_set_sensitive ((GtkWidget *) prefs->sig_edit, FALSE);
    gtk_widget_set_sensitive ((GtkWidget *) prefs->sig_delete, FALSE);

    prefs->sig_added_id = g_signal_connect (signatures, "signature-added", G_CALLBACK (signature_added), prefs);
    prefs->sig_removed_id = g_signal_connect (signatures, "signature-removed", G_CALLBACK (signature_removed), prefs);
    prefs->sig_changed_id = g_signal_connect (signatures, "signature-changed", G_CALLBACK (signature_changed), prefs);
}

static void
url_requested (GtkHTML *html, const char *url, GtkHTMLStream *handle)
{
    GtkHTMLStreamStatus status;
    char buf[128];
    ssize_t size;
    int fd;
    char *filename;

    if (!strncmp (url, "file:", 5))
        filename = g_filename_from_uri (url, NULL, NULL);
    else
        filename = g_strdup (url);
    fd = g_open (filename, O_RDONLY | O_BINARY, 0);
    g_free (filename);

    status = GTK_HTML_STREAM_OK;
    if (fd != -1) {
        while ((size = read (fd, buf, sizeof (buf)))) {
            if (size == -1) {
                status = GTK_HTML_STREAM_ERROR;
                break;
            } else
                gtk_html_write (html, handle, buf, size);
        }
    } else
        status = GTK_HTML_STREAM_ERROR;

    gtk_html_end (html, handle, status);
    if (fd > 0)
        close (fd);
}


/*
 *
 * Spell checking cut'n'pasted from gnome-spell/capplet/main.c
 *
 */

#include "Spell.h"

#define GNOME_SPELL_GCONF_DIR "/GNOME/Spell"
#define SPELL_API_VERSION "0.3"

static void
spell_set_ui (EMComposerPrefs *prefs)
{
    GHashTable *present;
    GtkListStore *model;
    GtkTreeIter iter;
    GError *err = NULL;
    char **strv = NULL;
    GdkColor color;
    gboolean go;
    char *lang;
    int i;

    prefs->spell_active = FALSE;

    /* setup the language list */
    if (!(lang = gconf_client_get_string (prefs->gconf, GNOME_SPELL_GCONF_DIR "/language", &err)) || err) {
        g_free (lang);
        g_clear_error (&err);
        lang = g_strdup (e_iconv_locale_language ());
    }

    present = g_hash_table_new (g_str_hash, g_str_equal);
    if (lang && (strv = g_strsplit (lang, " ", 0))) {
        for (i = 0; strv[i]; i++)
            g_hash_table_insert (present, strv[i], strv[i]);
    }

    g_free (lang);

    model = (GtkListStore *) gtk_tree_view_get_model (prefs->language);
    for (go = gtk_tree_model_get_iter_first ((GtkTreeModel *) model, &iter); go;
         go = gtk_tree_model_iter_next ((GtkTreeModel *) model, &iter)) {
        char *abbr;

        gtk_tree_model_get ((GtkTreeModel *) model, &iter, 2, &abbr, -1);
        gtk_list_store_set (model, &iter, 0, g_hash_table_lookup (present, abbr) != NULL, -1);
    }

    g_hash_table_destroy (present);
    if (strv != NULL)
        g_strfreev (strv);

    color.red = gconf_client_get_int (prefs->gconf,
        GNOME_SPELL_GCONF_DIR "/spell_error_color_red", NULL);
    color.green = gconf_client_get_int (prefs->gconf,
        GNOME_SPELL_GCONF_DIR "/spell_error_color_green", NULL);
    color.blue = gconf_client_get_int (prefs->gconf,
        GNOME_SPELL_GCONF_DIR "/spell_error_color_blue", NULL);
    gtk_color_button_set_color (GTK_COLOR_BUTTON (prefs->color), &color);

    prefs->spell_active = TRUE;
}

static void
spell_color_set (GtkColorButton *color_button, EMComposerPrefs *prefs)
{
    GdkColor color;

    gtk_color_button_get_color (GTK_COLOR_BUTTON (color_button), &color);

    gconf_client_set_int (prefs->gconf,
        GNOME_SPELL_GCONF_DIR "/spell_error_color_red",
        color.red, NULL);
    gconf_client_set_int (prefs->gconf,
        GNOME_SPELL_GCONF_DIR "/spell_error_color_green",
        color.green, NULL);
    gconf_client_set_int (prefs->gconf,
        GNOME_SPELL_GCONF_DIR "/spell_error_color_blue",
        color.blue, NULL);
}

static char *
spell_get_language_str (EMComposerPrefs *prefs)
{
    GtkListStore *model;
    GtkTreeIter iter;
    GString *str;
    char *rv;

    model = (GtkListStore *) gtk_tree_view_get_model (prefs->language);
    if (!gtk_tree_model_get_iter_first ((GtkTreeModel *) model, &iter))
        return NULL;

    str = g_string_new ("");

    do {
        gboolean state;
        char *abbr;

        gtk_tree_model_get ((GtkTreeModel *) model, &iter, 0, &state, 2, &abbr, -1);

        if (state) {
            if (str->len)
                g_string_append_c (str, ' ');
            g_string_append (str, abbr);
        }

        if (!gtk_tree_model_iter_next ((GtkTreeModel *) model, &iter))
            break;
    } while (1);

    rv = str->str;
    g_string_free (str, FALSE);

    return rv;
}

static void
spell_language_toggled (GtkCellRendererToggle *renderer, const char *path_string, EMComposerPrefs *prefs)
{
    GtkTreePath *path = gtk_tree_path_new_from_string (path_string);
    GtkTreeModel *model;
    GtkTreeIter iter;
    gboolean enabled;
    char *str;

    model = gtk_tree_view_get_model (prefs->language);
    gtk_tree_model_get_iter (model, &iter, path);
    gtk_tree_model_get (model, &iter, 0, &enabled, -1);
    gtk_list_store_set ((GtkListStore *) model, &iter, 0, !enabled, -1);

    str = spell_get_language_str (prefs);
    gconf_client_set_string (prefs->gconf, GNOME_SPELL_GCONF_DIR "/language", str ? str : "", NULL);
    g_free (str);

    gtk_tree_path_free (path);
}

static void
spell_setup (EMComposerPrefs *prefs)
{
    GtkListStore *model;
    GtkTreeIter iter;
    GtkWidget *widget;
    int i;

    model = (GtkListStore *) gtk_tree_view_get_model (prefs->language);

    if (prefs->language_seq) {
        for (i = 0; i < prefs->language_seq->_length; i++) {
            gtk_list_store_append (model, &iter);
            gtk_list_store_set (model, &iter,
                        1, _(prefs->language_seq->_buffer[i].name),
                        2, prefs->language_seq->_buffer[i].abbreviation,
                        -1);
        }
    }

    spell_set_ui (prefs);

    widget = glade_xml_get_widget (prefs->gui, "colorButtonSpellCheckColor");
    g_signal_connect (widget, "color_set", G_CALLBACK (spell_color_set), prefs);
}

static gboolean
spell_setup_check_options (EMComposerPrefs *prefs)
{
    GNOME_Spell_Dictionary dict;
    CORBA_Environment ev;
    char *dictionary_id;

    dictionary_id = "OAFIID:GNOME_Spell_Dictionary:" SPELL_API_VERSION;
    dict = bonobo_activation_activate_from_id (dictionary_id, 0, NULL, NULL);
    if (dict == CORBA_OBJECT_NIL) {
        g_warning ("Cannot activate %s", dictionary_id);

        return FALSE;
    }

    CORBA_exception_init (&ev);
    prefs->language_seq = GNOME_Spell_Dictionary_getLanguages (dict, &ev);
    if (ev._major != CORBA_NO_EXCEPTION)
        prefs->language_seq = NULL;
    CORBA_exception_free (&ev);

    if (prefs->language_seq == NULL)
        return FALSE;

    gconf_client_add_dir (prefs->gconf, GNOME_SPELL_GCONF_DIR, GCONF_CLIENT_PRELOAD_NONE, NULL);

        spell_setup (prefs);

    return TRUE;
}

/*
 * End of Spell checking
 */


static void
attach_style_info (GtkWidget *item, gpointer user_data)
{
    int *style = user_data;

    g_object_set_data ((GObject *) item, "style", GINT_TO_POINTER (*style));

    (*style)++;
}

static void
toggle_button_toggled (GtkToggleButton *toggle, EMComposerPrefs *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
style_activate (GtkWidget *item, EMComposerPrefs *prefs)
{
    const char *key;
    int style;

    key = g_object_get_data ((GObject *) item, "key");
    style = GPOINTER_TO_INT (g_object_get_data ((GObject *) item, "style"));

    gconf_client_set_int (prefs->gconf, key, style, NULL);
}

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

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

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

static void
option_menu_connect (EMComposerPrefs *prefs, GtkOptionMenu *omenu, GCallback callback, const char *key)
{
    GtkWidget *menu, *item;
    GList *items;

    menu = gtk_option_menu_get_menu (omenu);

    items = GTK_MENU_SHELL (menu)->children;
    while (items) {
        item = items->data;
        g_object_set_data ((GObject *) item, "key", (void *) key);
        g_signal_connect (item, "activate", callback, prefs);
        items = items->next;
    }

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

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

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

    g_object_set_data ((GObject *) toggle, "key", (void *) key);
    g_signal_connect (toggle, "toggled", G_CALLBACK (toggle_button_toggled), prefs);

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

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

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

/* plugin meta-data */
static EMConfigItem emcp_items[] = {
    { E_CONFIG_BOOK, "", "composer_toplevel", emcp_widget_glade },
    { E_CONFIG_PAGE, "00.general", "vboxGeneral", emcp_widget_glade },
    { E_CONFIG_SECTION, "00.general/00.behavior", "vboxBehavior", emcp_widget_glade },
    { E_CONFIG_SECTION, "00.general/10.alerts", "vboxAlerts", emcp_widget_glade },
    { E_CONFIG_PAGE, "10.signatures", "vboxSignatures", emcp_widget_glade },
    /* signature/signatures and signature/preview parts not usable */

    { E_CONFIG_PAGE, "20.spellcheck", "vboxSpellChecking", emcp_widget_glade },
    { E_CONFIG_SECTION, "20.spellcheck/00.languages", "vbox178", emcp_widget_glade },
    { E_CONFIG_SECTION, "20.spellcheck/00.options", "vboxOptions", emcp_widget_glade },
};

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

    g_slist_free(items);
}

static gboolean
signature_key_press (GtkTreeView *tree_view, GdkEventKey *event, EMComposerPrefs *prefs)
{
    gboolean ret = FALSE;

    /* No need to care about anything other than DEL key */
    if (event->keyval == GDK_Delete) {
        sig_delete_cb ((GtkWidget *)tree_view, prefs);
        ret = TRUE;
    }

    return ret;
}

static gboolean
sig_tree_event_cb (GtkTreeView *tree_view, GdkEvent *event, EMComposerPrefs *prefs)
{
    gboolean ret = FALSE;

    if (event->type == GDK_2BUTTON_PRESS) {
        sig_edit_cb ((GtkWidget *)tree_view, prefs);
        ret = TRUE;
    }

    return ret;
}

static void
em_composer_prefs_construct (EMComposerPrefs *prefs)
{
    GtkWidget *toplevel, *widget, *menu, *info_pixmap;
    GtkDialog *dialog;
    GladeXML *gui;
    GtkListStore *model;
    GtkTreeSelection *selection;
    GtkCellRenderer *cell_renderer;
    int style;
    char *buf;
    EMConfig *ec;
    EMConfigTargetPrefs *target;
    GSList *l;
    int i;
    char *gladefile;

    prefs->gconf = mail_config_get_gconf_client ();

    gladefile = g_build_filename (EVOLUTION_GLADEDIR,
                      "mail-config.glade",
                      NULL);
    gui = glade_xml_new (gladefile, "composer_toplevel", NULL);
    prefs->gui = gui;
    prefs->sig_script_gui = glade_xml_new (gladefile, "vbox_add_script_signature", NULL);
    g_free (gladefile);

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

    /* General tab */

    /* Default Behavior */
    prefs->send_html = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkSendHTML"));
    toggle_button_init (prefs, prefs->send_html, FALSE,
                "/apps/evolution/mail/composer/send_html");

    prefs->prompt_empty_subject = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkPromptEmptySubject"));
    toggle_button_init (prefs, prefs->prompt_empty_subject, FALSE,
                "/apps/evolution/mail/prompts/empty_subject");

    prefs->prompt_bcc_only = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkPromptBccOnly"));
    toggle_button_init (prefs, prefs->prompt_bcc_only, FALSE,
                "/apps/evolution/mail/prompts/only_bcc");

    prefs->auto_smileys = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkAutoSmileys"));
    toggle_button_init (prefs, prefs->auto_smileys, FALSE,
                "/apps/evolution/mail/composer/magic_smileys");

    prefs->auto_request_receipt = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkRequestReceipt"));
    toggle_button_init (prefs, prefs->auto_request_receipt, FALSE,
                "/apps/evolution/mail/composer/request_receipt");

    prefs->top_signature = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkTopSignature"));
    toggle_button_init (prefs, prefs->top_signature, FALSE,
                "/apps/evolution/mail/composer/top_signature");

    prefs->spell_check = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkEnableSpellChecking"));
    toggle_button_init (prefs, prefs->spell_check, FALSE,
                "/apps/evolution/mail/composer/inline_spelling");

    prefs->charset = GTK_OPTION_MENU (glade_xml_get_widget (gui, "omenuCharset"));
    buf = gconf_client_get_string (prefs->gconf, "/apps/evolution/mail/composer/charset", NULL);
    menu = e_charset_picker_new (buf && *buf ? buf : e_iconv_locale_charset ());
    gtk_option_menu_set_menu (prefs->charset, GTK_WIDGET (menu));
    option_menu_connect (prefs, prefs->charset, G_CALLBACK (charset_activate),
                 "/apps/evolution/mail/composer/charset");
    g_free (buf);

    /* Spell Checking: GNOME Spell part */
    prefs->color = GTK_COLOR_BUTTON (glade_xml_get_widget (gui, "colorButtonSpellCheckColor"));
    prefs->language = GTK_TREE_VIEW (glade_xml_get_widget (gui, "listSpellCheckLanguage"));
    model = gtk_list_store_new (3, G_TYPE_BOOLEAN, G_TYPE_STRING, G_TYPE_POINTER);
    gtk_tree_view_set_model (prefs->language, (GtkTreeModel *) model);
    cell_renderer = gtk_cell_renderer_toggle_new ();
    gtk_tree_view_insert_column_with_attributes (prefs->language, -1, _("Enabled"),
                             cell_renderer,
                             "active", 0,
                             NULL);
    g_signal_connect (cell_renderer, "toggled", G_CALLBACK (spell_language_toggled), prefs);

    gtk_tree_view_insert_column_with_attributes (prefs->language, -1, _("Language(s)"),
                             gtk_cell_renderer_text_new (),
                             "text", 1,
                             NULL);
    selection = gtk_tree_view_get_selection (prefs->language);
    gtk_tree_selection_set_mode (selection, GTK_SELECTION_NONE);
    info_pixmap = glade_xml_get_widget (gui, "pixmapSpellInfo");
    gtk_image_set_from_stock (GTK_IMAGE (info_pixmap), GTK_STOCK_DIALOG_INFO, GTK_ICON_SIZE_BUTTON);
    if (!spell_setup_check_options (prefs)) {
        gtk_widget_hide (GTK_WIDGET (prefs->color));
        gtk_widget_hide (GTK_WIDGET (prefs->language));
    }

    /* Forwards and Replies */
    prefs->forward_style = GTK_OPTION_MENU (glade_xml_get_widget (gui, "omenuForwardStyle"));
    style = gconf_client_get_int (prefs->gconf, "/apps/evolution/mail/format/forward_style", NULL);
    gtk_option_menu_set_history (prefs->forward_style, style);
    style = 0;
    gtk_container_foreach (GTK_CONTAINER (gtk_option_menu_get_menu (prefs->forward_style)),
                   attach_style_info, &style);
    option_menu_connect (prefs, prefs->forward_style, G_CALLBACK (style_activate),
                 "/apps/evolution/mail/format/forward_style");

    prefs->reply_style = GTK_OPTION_MENU (glade_xml_get_widget (gui, "omenuReplyStyle"));
    style = gconf_client_get_int (prefs->gconf, "/apps/evolution/mail/format/reply_style", NULL);
    gtk_option_menu_set_history (prefs->reply_style, style);
    style = 0;
    gtk_container_foreach (GTK_CONTAINER (gtk_option_menu_get_menu (prefs->reply_style)),
                   attach_style_info, &style);
    option_menu_connect (prefs, prefs->reply_style, G_CALLBACK (style_activate),
                 "/apps/evolution/mail/format/reply_style");

    /* Signatures */
    dialog = (GtkDialog *) gtk_dialog_new ();

    gtk_widget_realize ((GtkWidget *) dialog);
    gtk_container_set_border_width ((GtkContainer *)dialog->action_area, 12);
    gtk_container_set_border_width ((GtkContainer *)dialog->vbox, 0);

    prefs->sig_script_dialog = (GtkWidget *) dialog;
    gtk_dialog_add_buttons (dialog, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
                GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, NULL);
    gtk_dialog_set_has_separator (dialog, FALSE);
    gtk_window_set_title ((GtkWindow *) dialog, _("Add signature script"));
    g_signal_connect (dialog, "response", G_CALLBACK (sig_add_script_response), prefs);
    widget = glade_xml_get_widget (prefs->sig_script_gui, "vbox_add_script_signature");
    gtk_box_pack_start ((GtkBox *) dialog->vbox, widget, TRUE, TRUE, 0);

    prefs->sig_add = GTK_BUTTON (glade_xml_get_widget (gui, "cmdSignatureAdd"));
    g_signal_connect (prefs->sig_add, "clicked", G_CALLBACK (sig_add_cb), prefs);

    prefs->sig_add_script = GTK_BUTTON (glade_xml_get_widget (gui, "cmdSignatureAddScript"));
    g_signal_connect (prefs->sig_add_script, "clicked", G_CALLBACK (sig_add_script_cb), prefs);

    prefs->sig_edit = GTK_BUTTON (glade_xml_get_widget (gui, "cmdSignatureEdit"));
    g_signal_connect (prefs->sig_edit, "clicked", G_CALLBACK (sig_edit_cb), prefs);

    prefs->sig_delete = GTK_BUTTON (glade_xml_get_widget (gui, "cmdSignatureDelete"));
    g_signal_connect (prefs->sig_delete, "clicked", G_CALLBACK (sig_delete_cb), prefs);

    prefs->sig_list = GTK_TREE_VIEW (glade_xml_get_widget (gui, "listSignatures"));
    model = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_POINTER);
    gtk_tree_view_set_model (prefs->sig_list, (GtkTreeModel *)model);
    gtk_tree_view_insert_column_with_attributes (prefs->sig_list, -1, _("Signature(s)"),
                             gtk_cell_renderer_text_new (),
                             "text", 0,
                             NULL);
    selection = gtk_tree_view_get_selection (prefs->sig_list);
    gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
    g_signal_connect (selection, "changed", G_CALLBACK (sig_selection_changed), prefs);
    g_signal_connect (prefs->sig_list, "event", G_CALLBACK (sig_tree_event_cb), prefs);

    sig_fill_list (prefs);

    /* preview GtkHTML widget */
    widget = glade_xml_get_widget (gui, "scrolled-sig");
    prefs->sig_preview = (GtkHTML *) gtk_html_new ();
    g_signal_connect (prefs->sig_preview, "url_requested", G_CALLBACK (url_requested), NULL);
    gtk_widget_show (GTK_WIDGET (prefs->sig_preview));
    gtk_container_add (GTK_CONTAINER (widget), GTK_WIDGET (prefs->sig_preview));

    /* 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);

    g_signal_connect (prefs->sig_list, "key-press-event", G_CALLBACK(signature_key_press), prefs);
}

GtkWidget *
em_composer_prefs_new (void)
{
    EMComposerPrefs *new;

    new = (EMComposerPrefs *) g_object_new (em_composer_prefs_get_type (), NULL);
    em_composer_prefs_construct (new);

    return (GtkWidget *) new;
}