Sylpheed

/*

 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client

 * Copyright (C) 1999-2008 Hiroyuki Yamamoto

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 */

#ifdef HAVE_CONFIG_H

#  include "config.h"

#endif

#include "defs.h"

#include <glib.h>

#include <glib/gi18n.h>

#include <gtk/gtk.h>

#include <gdk/gdkkeysyms.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <errno.h>

#include "main.h"

#include "prefs.h"

#include "prefs_ui.h"

#include "prefs_filter.h"

#include "prefs_filter_edit.h"

#include "prefs_common.h"

#include "mainwindow.h"

#include "foldersel.h"

#include "manage_window.h"

#include "stock_pixmap.h"

#include "inc.h"

#include "procheader.h"

#include "menu.h"

#include "filter.h"

#include "utils.h"

#include "gtkutils.h"

#include "alertpanel.h"

#include "xml.h"

static struct FilterRuleListWindow {

        GtkWidget *window;

        GtkWidget *treeview;

        GtkListStore *store;

        GtkTreeSelection *selection;

        GtkWidget *add_btn;

        GtkWidget *edit_btn;

        GtkWidget *copy_btn;

        GtkWidget *del_btn;

        GSList *default_hdr_list;

        GSList *user_hdr_list;

        GSList *msg_hdr_list;

        GHashTable *msg_hdr_table;

        GtkWidget *close_btn;

} rule_list_window;

enum {

        COL_ENABLED,

        COL_NAME,

        COL_FILTER_RULE,

        N_COLS

};

static void prefs_filter_create                        (void);

static void prefs_filter_set_dialog                (void);

static void prefs_filter_set_list_row                (GtkTreeIter        *iter,

                                                 FilterRule        *rule,

                                                 gboolean         move_view);

static void prefs_filter_set_list                (void);

/* callback functions */

static void prefs_filter_add_cb                (void);

static void prefs_filter_edit_cb        (void);

static void prefs_filter_copy_cb        (void);

static void prefs_filter_delete_cb        (void);

static void prefs_filter_top                (void);

static void prefs_filter_up                (void);

static void prefs_filter_down                (void);

static void prefs_filter_bottom                (void);

static gboolean prefs_filter_select        (GtkTreeSelection        *selection,

                                         GtkTreeModel                *model,

                                         GtkTreePath                *path,

                                         gboolean                 cur_selected,

                                         gpointer                 data);

static void prefs_filter_enable_toggled        (GtkCellRenderer        *cell,

                                         gchar                        *path,

                                         gpointer                 data);

static void prefs_filter_row_activated        (GtkTreeView                *treeview,

                                         GtkTreePath                *path,

                                         GtkTreeViewColumn        *column,

                                         gpointer                 data);

static void prefs_filter_row_reordered        (GtkTreeModel                *model,

                                         GtkTreePath                *path,

                                         GtkTreeIter                *iter,

                                         gpointer                 data,

                                         gpointer                 user_data);

static gint prefs_filter_deleted        (GtkWidget        *widget,

                                         GdkEventAny        *event,

                                         gpointer         data);

static gboolean prefs_filter_key_pressed(GtkWidget        *widget,

                                         GdkEventKey        *event,

                                         gpointer         data);

static void prefs_filter_close                (void);

void prefs_filter_open(MsgInfo *msginfo, const gchar *header, const gchar *key)

{

        inc_lock();

        if (!rule_list_window.window)

                prefs_filter_create();

        prefs_filter_set_header_list(msginfo);

        manage_window_set_transient(GTK_WINDOW(rule_list_window.window));

        gtk_widget_grab_focus(rule_list_window.close_btn);

        prefs_filter_set_dialog();

        gtk_widget_show(rule_list_window.window);

        manage_window_focus_in(rule_list_window.window, NULL, NULL);

        if (msginfo) {

                FilterRule *rule;

                rule = prefs_filter_edit_open(NULL, header, key);

                gtk_window_present(GTK_WINDOW(rule_list_window.window));

                if (rule) {

                        prefs_filter_set_list_row(NULL, rule, TRUE);

                        prefs_filter_set_list();

                }

        }

}

static void prefs_filter_create(void)

{

        GtkWidget *window;

        GtkWidget *vbox;

        GtkWidget *close_btn;

        GtkWidget *confirm_area;

        GtkWidget *hbox;

        GtkWidget *scrolledwin;

        GtkWidget *treeview;

        GtkListStore *store;

        GtkTreeSelection *selection;

        GtkTreeViewColumn *column;

        GtkCellRenderer *renderer;

        GtkWidget *btn_vbox;

        GtkWidget *spc_vbox;

        GtkWidget *top_btn;

        GtkWidget *up_btn;

        GtkWidget *down_btn;

        GtkWidget *bottom_btn;

        GtkWidget *btn_hbox;

        GtkWidget *add_btn;

        GtkWidget *edit_btn;

        GtkWidget *copy_btn;

        GtkWidget *del_btn;

        debug_print("Creating filter setting window...\n");

        window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

        gtk_container_set_border_width(GTK_CONTAINER(window), 8);

        gtk_widget_set_size_request(window, 540, 360);

        gtk_window_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);

        gtk_window_set_modal(GTK_WINDOW(window), TRUE);

        gtk_window_set_policy(GTK_WINDOW(window), FALSE, TRUE, FALSE);

        vbox = gtk_vbox_new(FALSE, 6);

        gtk_widget_show(vbox);

        gtk_container_add(GTK_CONTAINER(window), vbox);

        gtkut_stock_button_set_create(&confirm_area,

                                      &close_btn, GTK_STOCK_CLOSE,

                                      NULL, NULL, NULL, NULL);

        gtk_widget_show(confirm_area);

        gtk_box_pack_end(GTK_BOX(vbox), confirm_area, FALSE, FALSE, 0);

        gtk_widget_grab_default(close_btn);

        gtk_window_set_title(GTK_WINDOW(window),

                             _("Filter settings"));

        g_signal_connect(G_OBJECT(window), "delete_event",

                         G_CALLBACK(prefs_filter_deleted), NULL);

        g_signal_connect(G_OBJECT(window), "key_press_event",

                         G_CALLBACK(prefs_filter_key_pressed), NULL);

        MANAGE_WINDOW_SIGNALS_CONNECT (window);

        g_signal_connect(G_OBJECT(close_btn), "clicked",

                         G_CALLBACK(prefs_filter_close), NULL);

        /* Rule list */

        hbox = gtk_hbox_new(FALSE, 8);

        gtk_widget_show(hbox);

        gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);

        scrolledwin = gtk_scrolled_window_new(NULL, NULL);

        gtk_widget_show(scrolledwin);

        gtk_widget_set_size_request(scrolledwin, -1, 150);

        gtk_box_pack_start(GTK_BOX(hbox), scrolledwin, TRUE, TRUE, 0);

        gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),

                                       GTK_POLICY_AUTOMATIC,

                                       GTK_POLICY_AUTOMATIC);

        gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolledwin),

                                            GTK_SHADOW_IN);

        store = gtk_list_store_new

                (N_COLS, G_TYPE_BOOLEAN, G_TYPE_STRING, G_TYPE_POINTER);

        treeview = gtk_tree_view_new_with_model(GTK_TREE_MODEL(store));

        g_object_unref(G_OBJECT(store));

        gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(treeview), TRUE);

        gtk_tree_view_set_rules_hint(GTK_TREE_VIEW(treeview), TRUE);

        gtk_tree_view_set_search_column(GTK_TREE_VIEW(treeview), COL_NAME);

        gtk_tree_view_set_reorderable(GTK_TREE_VIEW(treeview), TRUE);

        selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(treeview));

        gtk_tree_selection_set_mode(selection, GTK_SELECTION_BROWSE);

        gtk_tree_selection_set_select_function(selection, prefs_filter_select,

                                               NULL, NULL);

        renderer = gtk_cell_renderer_toggle_new();

        g_signal_connect(renderer, "toggled",

                         G_CALLBACK(prefs_filter_enable_toggled), NULL);

        column = gtk_tree_view_column_new_with_attributes

                (_("Enabled"), renderer, "active", COL_ENABLED, NULL);

        gtk_tree_view_append_column(GTK_TREE_VIEW(treeview), column);

        renderer = gtk_cell_renderer_text_new();

        column = gtk_tree_view_column_new_with_attributes

                (_("Name"), renderer, "text", COL_NAME, NULL);

        gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);

        gtk_tree_view_append_column(GTK_TREE_VIEW(treeview), column);

        gtk_widget_show(treeview);

        gtk_container_add(GTK_CONTAINER(scrolledwin), treeview);

        g_signal_connect(G_OBJECT(treeview), "row-activated",

                         G_CALLBACK(prefs_filter_row_activated), NULL);

        g_signal_connect_after(G_OBJECT(store), "rows-reordered",

                               G_CALLBACK(prefs_filter_row_reordered), NULL);

        /* Up / Down */

        btn_vbox = gtk_vbox_new (FALSE, 8);

        gtk_widget_show(btn_vbox);

        gtk_box_pack_start(GTK_BOX(hbox), btn_vbox, FALSE, FALSE, 0);

        top_btn = gtk_button_new_from_stock(GTK_STOCK_GOTO_TOP);

        gtk_widget_show(top_btn);

        gtk_box_pack_start(GTK_BOX(btn_vbox), top_btn, FALSE, FALSE, 0);

        g_signal_connect(G_OBJECT(top_btn), "clicked",

                         G_CALLBACK(prefs_filter_top), NULL);

        PACK_VSPACER(btn_vbox, spc_vbox, VSPACING_NARROW_2);

        up_btn = gtk_button_new_from_stock(GTK_STOCK_GO_UP);

        gtk_widget_show(up_btn);

        gtk_box_pack_start(GTK_BOX(btn_vbox), up_btn, FALSE, FALSE, 0);

        g_signal_connect(G_OBJECT(up_btn), "clicked",

                         G_CALLBACK(prefs_filter_up), NULL);

        down_btn = gtk_button_new_from_stock(GTK_STOCK_GO_DOWN);

        gtk_widget_show(down_btn);

        gtk_box_pack_start(GTK_BOX(btn_vbox), down_btn, FALSE, FALSE, 0);

        g_signal_connect(G_OBJECT(down_btn), "clicked",

                         G_CALLBACK(prefs_filter_down), NULL);

        PACK_VSPACER(btn_vbox, spc_vbox, VSPACING_NARROW_2);

        bottom_btn = gtk_button_new_from_stock(GTK_STOCK_GOTO_BOTTOM);

        gtk_widget_show(bottom_btn);

        gtk_box_pack_start(GTK_BOX(btn_vbox), bottom_btn, FALSE, FALSE, 0);

        g_signal_connect(G_OBJECT(bottom_btn), "clicked",

                         G_CALLBACK(prefs_filter_bottom), NULL);

        /* add / edit / copy / delete */

        hbox = gtk_hbox_new(FALSE, 4);

        gtk_widget_show(hbox);

        gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0);

        btn_hbox = gtk_hbox_new(TRUE, 4);

        gtk_widget_show(btn_hbox);

        gtk_box_pack_start(GTK_BOX(hbox), btn_hbox, FALSE, FALSE, 0);

        add_btn = gtk_button_new_from_stock(GTK_STOCK_ADD);

        gtk_widget_show(add_btn);

        gtk_box_pack_start(GTK_BOX(btn_hbox), add_btn, FALSE, TRUE, 0);

        g_signal_connect(G_OBJECT(add_btn), "clicked",

                         G_CALLBACK(prefs_filter_add_cb), NULL);

#ifdef GTK_STOCK_EDIT

        edit_btn = gtk_button_new_from_stock(GTK_STOCK_EDIT);

#else

        edit_btn = gtk_button_new_with_label(_("Edit"));

#endif

        gtk_widget_show(edit_btn);

        gtk_box_pack_start(GTK_BOX(btn_hbox), edit_btn, FALSE, TRUE, 0);

        g_signal_connect(G_OBJECT(edit_btn), "clicked",

                         G_CALLBACK(prefs_filter_edit_cb), NULL);

        copy_btn = gtk_button_new_from_stock(GTK_STOCK_COPY);

        gtk_widget_show(copy_btn);

        gtk_box_pack_start(GTK_BOX(btn_hbox), copy_btn, FALSE, TRUE, 0);

        g_signal_connect(G_OBJECT(copy_btn), "clicked",

                         G_CALLBACK(prefs_filter_copy_cb), NULL);

        del_btn = gtk_button_new_from_stock(GTK_STOCK_DELETE);

        gtk_widget_show(del_btn);

        gtk_box_pack_start(GTK_BOX(btn_hbox), del_btn, FALSE, TRUE, 0);

        g_signal_connect(G_OBJECT(del_btn), "clicked",

                         G_CALLBACK(prefs_filter_delete_cb), NULL);

        gtk_widget_show_all(window);

        rule_list_window.window = window;

        rule_list_window.close_btn = close_btn;

        rule_list_window.treeview = treeview;

        rule_list_window.store = store;

        rule_list_window.selection = selection;

        rule_list_window.add_btn = add_btn;

        rule_list_window.edit_btn = edit_btn;

        rule_list_window.copy_btn = copy_btn;

        rule_list_window.del_btn = del_btn;

        rule_list_window.default_hdr_list = NULL;

        rule_list_window.user_hdr_list = NULL;

        rule_list_window.msg_hdr_list = NULL;

        rule_list_window.msg_hdr_table = NULL;

}

static void prefs_filter_set_dialog(void)

{

        GSList *cur;

        gtk_list_store_clear(rule_list_window.store);

        for (cur = prefs_common.fltlist; cur != NULL; cur = cur->next) {

                FilterRule *rule = (FilterRule *)cur->data;

                prefs_filter_set_list_row(NULL, rule, FALSE);

        }

}

static void prefs_filter_set_list_row(GtkTreeIter *iter, FilterRule *rule,

                                      gboolean move_view)

{

        GtkListStore *store = rule_list_window.store;

        gchar *rule_name;

        GtkTreeIter iter_;

        g_return_if_fail(rule != NULL);

        if (rule->name && *rule->name)

                rule_name = g_strdup(rule->name);

        else

                rule_name = filter_get_str(rule);

        if (!iter) {

                gtk_list_store_append(store, &iter_);

                gtk_list_store_set(store, &iter_,

                                   COL_ENABLED, rule->enabled,

                                   COL_NAME, rule_name,

                                   COL_FILTER_RULE, rule, -1);

        } else {

                FilterRule *prev_rule = NULL;

                iter_ = *iter;

                gtk_tree_model_get(GTK_TREE_MODEL(store), &iter_,

                                   COL_FILTER_RULE, &prev_rule, -1);

                if (!prev_rule) {

                        g_warning("rule at the row not found\n");

                        gtk_list_store_append(store, &iter_);

                }

                gtk_list_store_set(store, &iter_,

                                   COL_ENABLED, rule->enabled,

                                   COL_NAME, rule_name,

                                   COL_FILTER_RULE, rule, -1);

                if (prev_rule && prev_rule != rule)

                        filter_rule_free(prev_rule);

        }

        g_free(rule_name);

        if (move_view) {

                GtkTreePath *path;

                path = gtk_tree_model_get_path(GTK_TREE_MODEL(store), &iter_);

                gtk_tree_view_scroll_to_cell

                        (GTK_TREE_VIEW(rule_list_window.treeview),

                         path, NULL, TRUE, 0.5, 0.0);

                gtk_tree_path_free(path);

        }

}

#define APPEND_HDR_LIST(hdr_list)                                          \

        for (cur = hdr_list; cur != NULL; cur = cur->next) {                  \

                header = (Header *)cur->data;                                  \

                                                                          \

                if (!g_hash_table_lookup(table, header->name)) {          \

                        g_hash_table_insert(table, header->name, header); \

                        list = procheader_add_header_list                  \

                                (list, header->name, header->body);          \

                }                                                          \

        }

GSList *prefs_filter_get_header_list(void)

{

        GSList *list = NULL;

        GSList *cur;

        GHashTable *table;

        Header *header;

        table = g_hash_table_new(str_case_hash, str_case_equal);

        APPEND_HDR_LIST(rule_list_window.default_hdr_list)

        APPEND_HDR_LIST(rule_list_window.user_hdr_list);

        APPEND_HDR_LIST(rule_list_window.msg_hdr_list);

        g_hash_table_destroy(table);

        return list;

}

#undef APPEND_HDR_LIST

GSList *prefs_filter_get_user_header_list(void)

{

        return rule_list_window.user_hdr_list;

}

gchar *prefs_filter_get_msg_header_field(const gchar *header_name)

{

        if (!rule_list_window.msg_hdr_table)

                return NULL;

        return (gchar *)g_hash_table_lookup

                (rule_list_window.msg_hdr_table, header_name);

}

void prefs_filter_set_user_header_list(GSList *list)

{

        procheader_header_list_destroy(rule_list_window.user_hdr_list);

        rule_list_window.user_hdr_list = list;

}

void prefs_filter_set_msg_header_list(MsgInfo *msginfo)

{

        gchar *file;

        GSList *cur;

        GSList *next;

        Header *header;

        if (rule_list_window.msg_hdr_table) {

                g_hash_table_destroy(rule_list_window.msg_hdr_table);

                rule_list_window.msg_hdr_table = NULL;

        }

        if (rule_list_window.msg_hdr_list) {

                procheader_header_list_destroy(rule_list_window.msg_hdr_list);

                rule_list_window.msg_hdr_list = NULL;

        }

        if (!msginfo)

                return;

        file = procmsg_get_message_file(msginfo);

        g_return_if_fail(file != NULL);

        rule_list_window.msg_hdr_list =

                procheader_get_header_list_from_file(file);

        g_free(file);

        rule_list_window.msg_hdr_table =

                g_hash_table_new(str_case_hash, str_case_equal);

        for (cur = rule_list_window.msg_hdr_list; cur != NULL;

             cur = next) {

                next = cur->next;

                header = (Header *)cur->data;

                if (!g_ascii_strcasecmp(header->name, "Received") ||

                    !g_ascii_strcasecmp(header->name, "Mime-Version") ||

                    !g_ascii_strcasecmp(header->name, "X-UIDL")) {

                        procheader_header_free(header);

                        rule_list_window.msg_hdr_list =

                                g_slist_remove(rule_list_window.msg_hdr_list,

                                               header);

                        continue;

                }

                if (!g_hash_table_lookup(rule_list_window.msg_hdr_table,

                                         header->name)) {

                        g_hash_table_insert(rule_list_window.msg_hdr_table,

                                            header->name, header->body);

                }

        }

}

void prefs_filter_set_header_list(MsgInfo *msginfo)

{

        GSList *list = NULL;

        gchar *path;

        FILE *fp;

        list = procheader_add_header_list(list, "From", NULL);

        list = procheader_add_header_list(list, "To", NULL);

        list = procheader_add_header_list(list, "Cc", NULL);

        list = procheader_add_header_list(list, "Subject", NULL);

        list = procheader_add_header_list(list, "Reply-To", NULL);

        list = procheader_add_header_list(list, "List-Id", NULL);

        list = procheader_add_header_list(list, "X-ML-Name", NULL);

        procheader_header_list_destroy(rule_list_window.default_hdr_list);

        rule_list_window.default_hdr_list = list;

        list = NULL;

        path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, FILTER_HEADER_RC,

                           NULL);

        if ((fp = g_fopen(path, "rb")) != NULL) {

                gchar buf[PREFSBUFSIZE];

                while (fgets(buf, sizeof(buf), fp) != NULL) {

                        g_strstrip(buf);

                        if (buf[0] == '\0') continue;

                        list = procheader_add_header_list(list, buf, NULL);

                }

                fclose(fp);

        } else

                if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");

        g_free(path);

        prefs_filter_set_user_header_list(list);

        prefs_filter_set_msg_header_list(msginfo);

}

void prefs_filter_write_user_header_list(void)

{

        gchar *path;

        PrefFile *pfile;

        GSList *cur;

        path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, FILTER_HEADER_RC,

                           NULL);

        if ((pfile = prefs_file_open(path)) == NULL) {

                g_warning("failed to write filter user header list\n");

                g_free(path);

                return;

        }

        g_free(path);

        for (cur = rule_list_window.user_hdr_list; cur != NULL;

             cur = cur->next) {

                Header *header = (Header *)cur->data;

                fputs(header->name, pfile->fp);

                fputc('\n', pfile->fp);

        }

        if (prefs_file_close(pfile) < 0)

                g_warning("failed to write filter user header list\n");

}

static void prefs_filter_set_list(void)

{

        FilterRule *rule;

        GtkTreeIter iter;

        GtkTreeModel *model = GTK_TREE_MODEL(rule_list_window.store);

        g_slist_free(prefs_common.fltlist);

        prefs_common.fltlist = NULL;

        if (!gtk_tree_model_get_iter_first(model, &iter))

                return;

        do {

                gtk_tree_model_get(model, &iter, COL_FILTER_RULE, &rule, -1);

                if (rule)

                        prefs_common.fltlist =

                                g_slist_append(prefs_common.fltlist, rule);

        } while (gtk_tree_model_iter_next(model, &iter));

}

static void prefs_filter_add_cb(void)

{

        FilterRule *rule;

        rule = prefs_filter_edit_open(NULL, NULL, NULL);

        gtk_window_present(GTK_WINDOW(rule_list_window.window));

        if (rule) {

                prefs_filter_set_list_row(NULL, rule, TRUE);

                prefs_filter_set_list();

        }

}

static void prefs_filter_edit_cb(void)

{

        GtkTreeIter iter;

        FilterRule *rule, *new_rule;

        if (!gtk_tree_selection_get_selected(rule_list_window.selection,

                                             NULL, &iter))

                return;

        gtk_tree_model_get(GTK_TREE_MODEL(rule_list_window.store), &iter,

                           COL_FILTER_RULE, &rule, -1);

        g_return_if_fail(rule != NULL);

        new_rule = prefs_filter_edit_open(rule, NULL, NULL);

        gtk_window_present(GTK_WINDOW(rule_list_window.window));

        if (new_rule) {

                prefs_filter_set_list_row(&iter, new_rule, TRUE);

                prefs_filter_set_list();

        }

}

static void prefs_filter_copy_cb(void)

{

        GtkTreeIter iter;

        FilterRule *rule, *new_rule;

        if (!gtk_tree_selection_get_selected(rule_list_window.selection,

                                             NULL, &iter))

                return;

        gtk_tree_model_get(GTK_TREE_MODEL(rule_list_window.store), &iter,

                           COL_FILTER_RULE, &rule, -1);

        g_return_if_fail(rule != NULL);

        new_rule = prefs_filter_edit_open(rule, NULL, NULL);

        gtk_window_present(GTK_WINDOW(rule_list_window.window));

        if (new_rule) {

                prefs_filter_set_list_row(NULL, new_rule, TRUE);

                prefs_filter_set_list();

        }

}

static void prefs_filter_delete_cb(void)

{

        GtkTreeIter iter;

        FilterRule *rule;

        gchar buf[BUFFSIZE];

        gboolean valid;

        if (!gtk_tree_selection_get_selected(rule_list_window.selection,

                                             NULL, &iter))

                return;

        gtk_tree_model_get(GTK_TREE_MODEL(rule_list_window.store), &iter,

                           COL_FILTER_RULE, &rule, -1);

        g_return_if_fail(rule != NULL);

        g_snprintf(buf, sizeof(buf),

                   _("Do you really want to delete the rule '%s'?"),

                   rule->name ? rule->name : _("(Untitled)"));

        if (alertpanel(_("Delete rule"), buf,

                       GTK_STOCK_YES, GTK_STOCK_NO, NULL) != G_ALERTDEFAULT)

                return;

        valid = gtk_list_store_remove(rule_list_window.store, &iter);

        if (valid)

                gtk_tree_selection_select_iter(rule_list_window.selection,

                                               &iter);

        prefs_common.fltlist = g_slist_remove(prefs_common.fltlist, rule);

        filter_rule_free(rule);

}

static void prefs_filter_top(void)

{

        GtkTreeIter iter;

        if (!gtk_tree_selection_get_selected(rule_list_window.selection,

                                             NULL, &iter))

                return;

        gtk_list_store_move_after(rule_list_window.store, &iter, NULL);

}

static void prefs_filter_up(void)

{

        GtkTreeModel *model = GTK_TREE_MODEL(rule_list_window.store);

        GtkTreeIter iter, prev;

        GtkTreePath *path;

        if (!gtk_tree_selection_get_selected(rule_list_window.selection,

                                             NULL, &iter))

                return;

        path = gtk_tree_model_get_path(model, &iter);

        if (gtk_tree_path_prev(path)) {

                gtk_tree_model_get_iter(model, &prev, path);

                gtk_list_store_swap(rule_list_window.store, &iter, &prev);

        }

        gtk_tree_path_free(path);

}

static void prefs_filter_down(void)

{

        GtkTreeIter iter, next;

        if (!gtk_tree_selection_get_selected(rule_list_window.selection,

                                             NULL, &iter))

                return;

        next = iter;

        if (gtk_tree_model_iter_next(GTK_TREE_MODEL(rule_list_window.store),

                                     &next))

                gtk_list_store_swap(rule_list_window.store, &iter, &next);

}

static void prefs_filter_bottom(void)

{

        GtkTreeIter iter;

        if (!gtk_tree_selection_get_selected(rule_list_window.selection,

                                             NULL, &iter))

                return;

        gtk_list_store_move_before(rule_list_window.store, &iter, NULL);

}

static gboolean prefs_filter_select(GtkTreeSelection *selection,

                                    GtkTreeModel *model, GtkTreePath *path,

                                    gboolean cur_selected, gpointer data)

{

        return TRUE;

}

static void prefs_filter_enable_toggled(GtkCellRenderer *cell, gchar *path_str,

                                        gpointer data)

{

        FilterRule *rule;

        GtkTreeIter iter;

        GtkTreePath *path;

        path = gtk_tree_path_new_from_string(path_str);

        gtk_tree_model_get_iter(GTK_TREE_MODEL(rule_list_window.store),

                                &iter, path);

        gtk_tree_path_free(path);

        gtk_tree_model_get(GTK_TREE_MODEL(rule_list_window.store), &iter,

                           COL_FILTER_RULE, &rule, -1);

        rule->enabled ^= TRUE;

        gtk_list_store_set(rule_list_window.store, &iter,

                           COL_ENABLED, rule->enabled, -1);

}

static void prefs_filter_row_activated(GtkTreeView *treeview, GtkTreePath *path,

                                       GtkTreeViewColumn *column,

                                       gpointer data)

{

        gtk_button_clicked(GTK_BUTTON(rule_list_window.edit_btn));

}

static void prefs_filter_row_reordered(GtkTreeModel *model,

                                       GtkTreePath *path, GtkTreeIter *iter,

                                       gpointer data, gpointer user_data)

{

        GtkTreeIter iter_;

        GtkTreePath *path_;

        if (!gtk_tree_selection_get_selected(rule_list_window.selection,

                                             NULL, &iter_))

                return;

        path_ = gtk_tree_model_get_path

                (GTK_TREE_MODEL(rule_list_window.store), &iter_);

        gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(rule_list_window.treeview),

                                     path_, NULL, FALSE, 0.0, 0.0);

        gtk_tree_path_free(path_);

}

static gint prefs_filter_deleted(GtkWidget *widget, GdkEventAny *event,

                                 gpointer data)

{

        prefs_filter_close();

        return TRUE;

}

static gboolean prefs_filter_key_pressed(GtkWidget *widget, GdkEventKey *event,

                                         gpointer data)

{

        if (event && event->keyval == GDK_Escape)

                prefs_filter_close();

        return FALSE;

}

static void prefs_filter_close(void)

{

        prefs_filter_set_msg_header_list(NULL);

        prefs_filter_set_list();

        filter_write_config();

        gtk_widget_hide(rule_list_window.window);

        gtk_list_store_clear(rule_list_window.store);

        main_window_popup(main_window_get());

        inc_unlock();

}