/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Copyright (C) 2000-2002 Ximian Inc.
*
* Authors: Not Zed <notzed@lostzed.mmc.com.au>
* Jeffrey Stedfast <fejj@ximian.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* 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
/* for getenv only, remove when getenv need removed */
#include <stdlib.h>
#include <gtk/gtkframe.h>
#include <libgnome/gnome-defs.h>
#include <libgnome/gnome-i18n.h>
#include <libgnomeui/gnome-stock.h>
#include <libgnomeui/gnome-dialog.h>
#include <libgnomeui/gnome-dialog-util.h>
#include "rule-editor.h"
static int enable_undo = 0;
void rule_editor_add_undo (RuleEditor *re, int type, FilterRule *rule, int rank, int newrank);
void rule_editor_play_undo (RuleEditor *re);
#define d(x) x
static void set_source (RuleEditor *re, const char *source);
static void set_sensitive (RuleEditor *re);
static FilterRule *create_rule (RuleEditor *re);
static void rule_editor_class_init (RuleEditorClass *klass);
static void rule_editor_init (RuleEditor *re);
static void rule_editor_finalise (GObject *obj);
static void rule_editor_destroy (GtkObject *obj);
#define _PRIVATE(x)(((RuleEditor *)(x))->priv)
enum {
BUTTON_ADD,
BUTTON_EDIT,
BUTTON_DELETE,
BUTTON_UP,
BUTTON_DOWN,
BUTTON_LAST
};
struct _RuleEditorPrivate {
GtkButton *buttons[BUTTON_LAST];
};
static GnomeDialogClass *parent_class = NULL;
GtkType
rule_editor_get_type (void)
{
static GtkType type = 0;
if (!type) {
static const GtkTypeInfo info = {
"RuleEditor",
sizeof (RuleEditor),
sizeof (RuleEditorClass),
(GtkClassInitFunc) rule_editor_class_init,
(GtkObjectInitFunc) rule_editor_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
/* TODO: Remove when it works (or never will) */
enable_undo = getenv ("EVOLUTION_RULE_UNDO") != NULL;
type = gtk_type_unique (gnome_dialog_get_type (), &info);
}
return type;
}
static void
rule_editor_class_init (RuleEditorClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkObjectClass *object_class = (GtkObjectClass *) klass;
parent_class = gtk_type_class (gnome_dialog_get_type ());
gobject_class->finalize = rule_editor_finalise;
object_class->destroy = rule_editor_destroy;
/* override methods */
klass->set_source = set_source;
klass->set_sensitive = set_sensitive;
klass->create_rule = create_rule;
}
static void
rule_editor_init (RuleEditor *re)
{
re->priv = g_malloc0 (sizeof (*re->priv));
}
static void
rule_editor_finalise (GObject *obj)
{
RuleEditor *re = (RuleEditor *)obj;
RuleEditorUndo *undo, *next;
g_object_unref (re->context);
g_free (re->priv);
undo = re->undo_log;
while (undo) {
next = undo->next;
g_object_unref (undo->rule);
g_free (undo);
undo = next;
}
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
rule_editor_destroy (GtkObject *obj)
{
RuleEditor *re = (RuleEditor *) obj;
if (re->dialog) {
gtk_widget_destroy (GTK_WIDGET (re->dialog));
re->dialog = NULL;
}
((GtkObjectClass *)(parent_class))->destroy (obj);
}
/**
* rule_editor_new:
*
* Create a new RuleEditor object.
*
* Return value: A new #RuleEditor object.
**/
RuleEditor *
rule_editor_new (RuleContext *rc, const char *source)
{
RuleEditor *re = (RuleEditor *) gtk_type_new (rule_editor_get_type ());
GladeXML *gui;
GtkWidget *w;
gui = glade_xml_new (FILTER_GLADEDIR "/filter.glade", "rule_editor");
rule_editor_construct (re, rc, gui, source);
w = glade_xml_get_widget (gui, "rule_frame");
gtk_frame_set_label ((GtkFrame *) w, _("Rules"));
g_object_unref (gui);
return re;
}
/* used internally by implementations if required */
void
rule_editor_set_sensitive (RuleEditor *re)
{
return RULE_EDITOR_GET_CLASS (re)->set_sensitive (re);
}
/* used internally by implementations */
void
rule_editor_set_source (RuleEditor *re, const char *source)
{
return RULE_EDITOR_GET_CLASS (re)->set_source (re, source);
}
/* factory method for "add" button */
FilterRule *
rule_editor_create_rule (RuleEditor *re)
{
return RULE_EDITOR_GET_CLASS (re)->create_rule (re);
}
static FilterRule *
create_rule (RuleEditor *re)
{
FilterRule *rule = filter_rule_new ();
FilterPart *part;
/* create a rule with 1 part in it */
part = rule_context_next_part (re->context, NULL);
filter_rule_add_part (rule, filter_part_clone (part));
return rule;
}
static void
add_editor_clicked (GtkWidget *dialog, int button, RuleEditor *re)
{
GtkWidget *item;
GList *l = NULL;
switch (button) {
case 0:
if (!filter_rule_validate (re->edit)) {
/* no need to popup a dialog because the validate code does that. */
return;
}
if (rule_context_find_rule (re->context, re->edit->name, re->edit->source)) {
GtkWidget *dialog;
char *what;
what = g_strdup_printf(_("Rule name '%s' is not unique, choose another"), re->edit->name);
dialog = gnome_ok_dialog (what);
g_free (what);
gnome_dialog_run_and_close (GNOME_DIALOG (dialog));
return;
}
g_object_ref (re->edit);
item = gtk_list_item_new_with_label (re->edit->name);
g_object_set_data (item, "rule", re->edit);
gtk_widget_show (item);
l = g_list_append (l, GTK_LIST_ITEM (item));
gtk_list_append_items (re->list, l);
gtk_list_select_child (re->list, item);
re->current = re->edit;
rule_context_add_rule (re->context, re->current);
g_object_ref (re->current);
rule_editor_add_undo (re, RULE_EDITOR_LOG_ADD, re->current,
rule_context_get_rank_rule (re->context, re->current, re->current->source), 0);
case 1:
default:
gnome_dialog_close (GNOME_DIALOG (dialog));
case -1:
if (re->edit) {
g_object_unref (re->edit);
re->edit = NULL;
}
re->dialog = NULL;
gtk_widget_set_sensitive (GTK_WIDGET (re), TRUE);
rule_editor_set_sensitive (re);
}
}
static void
add_editor_destroyed (GtkWidget *w, RuleEditor *re)
{
add_editor_clicked (w, -1, re);
}
static void
rule_add (GtkWidget *widget, RuleEditor *re)
{
GtkWidget *rules;
if (re->edit != NULL)
return;
re->edit = rule_editor_create_rule (re);
filter_rule_set_source (re->edit, re->source);
rules = filter_rule_get_widget (re->edit, re->context);
re->dialog = gnome_dialog_new (_("Add Rule"),
GNOME_STOCK_BUTTON_OK,
GNOME_STOCK_BUTTON_CANCEL,
NULL);
gtk_window_set_default_size (GTK_WINDOW (re->dialog), 650, 400);
gtk_window_set_policy (GTK_WINDOW (re->dialog), FALSE, TRUE, FALSE);
gtk_widget_set_parent_window (GTK_WIDGET (re->dialog), GTK_WIDGET (re)->window);
gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (re->dialog)->vbox), rules, TRUE, TRUE, 0);
g_signal_connect (re->dialog, "clicked", add_editor_clicked, re);
g_signal_connect (re->dialog, "destroy", add_editor_destroyed, re);
gtk_widget_set_sensitive (GTK_WIDGET (re), FALSE);
gtk_widget_show (re->dialog);
}
static void
edit_editor_clicked (GtkWidget *dialog, int button, RuleEditor *re)
{
FilterRule *rule;
GtkWidget *item;
int pos;
switch (button) {
case 0:
if (!filter_rule_validate (re->edit)) {
/* no need to popup a dialog because the validate code does that. */
return;
}
rule = rule_context_find_rule (re->context, re->edit->name, re->edit->source);
if (rule != NULL && rule != re->current) {
GtkWidget *dialog;
char *what;
what = g_strdup_printf (_("Rule name '%s' is not unique, choose another"), re->edit->name);
dialog = gnome_ok_dialog (what);
g_free (what);
gnome_dialog_run_and_close (GNOME_DIALOG (dialog));
return;
}
pos = rule_context_get_rank_rule (re->context, re->current, re->source);
if (pos != -1) {
item = g_list_nth_data (GTK_LIST (re->list)->children, pos);
gtk_label_set_text (GTK_LABEL (GTK_BIN (item)->child), re->edit->name);
rule_editor_add_undo (re, RULE_EDITOR_LOG_EDIT, filter_rule_clone (re->current), pos, 0);
/* replace the old rule with the new rule */
filter_rule_copy (re->current, re->edit);
}
case 1:
default:
gnome_dialog_close (GNOME_DIALOG (dialog));
case -1:
if (re->edit) {
g_object_unref (re->edit);
re->edit = NULL;
}
re->dialog = NULL;
gtk_widget_set_sensitive (GTK_WIDGET (re), TRUE);
rule_editor_set_sensitive (re);
}
}
static void
edit_editor_destroyed (GtkWidget *w, RuleEditor *re)
{
edit_editor_clicked (w, -1, re);
}
static void
rule_edit (GtkWidget *widget, RuleEditor *re)
{
GtkWidget *rules;
if (re->current == NULL || re->edit != NULL)
return;
re->edit = filter_rule_clone (re->current);
rules = filter_rule_get_widget (re->edit, re->context);
re->dialog = gnome_dialog_new (_("Edit Rule"),
GNOME_STOCK_BUTTON_OK,
GNOME_STOCK_BUTTON_CANCEL,
NULL);
gnome_dialog_set_parent (GNOME_DIALOG (re->dialog), GTK_WINDOW (re));
gtk_window_set_default_size (GTK_WINDOW (re->dialog), 600, 400);
gtk_window_set_policy (GTK_WINDOW (re->dialog), FALSE, TRUE, FALSE);
gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (re->dialog)->vbox), rules, TRUE, TRUE, 0);
g_signal_connect (re->dialog, "clicked", edit_editor_clicked, re);
g_signal_connect (re->dialog, "destroy", edit_editor_destroyed, re);
gtk_widget_set_sensitive (GTK_WIDGET (re), FALSE);
gtk_widget_show (re->dialog);
}
static void
rule_delete (GtkWidget *widget, RuleEditor *re)
{
int pos;
GList *l;
GtkListItem *item;
d(printf ("delete rule\n"));
pos = rule_context_get_rank_rule (re->context, re->current, re->source);
if (pos != -1) {
int len;
rule_context_remove_rule (re->context, re->current);
item = g_list_nth_data (GTK_LIST (re->list)->children, pos);
l = g_list_append (NULL, item);
gtk_list_remove_items (re->list, l);
g_list_free (l);
rule_editor_add_undo( re, RULE_EDITOR_LOG_REMOVE, re->current,
rule_context_get_rank_rule (re->context, re->current, re->current->source), 0);
#if 0
g_object_unref (re->current);
#endif
re->current = NULL;
/* now select the next rule */
len = g_list_length (GTK_LIST (re->list)->children);
pos = pos >= len ? len - 1 : pos;
gtk_list_select_item (GTK_LIST (re->list), pos);
}
rule_editor_set_sensitive (re);
}
static void
rule_move (RuleEditor *re, int from, int to)
{
GList *l;
GtkListItem *item;
g_object_ref (re->current);
rule_editor_add_undo (re, RULE_EDITOR_LOG_RANK, re->current,
rule_context_get_rank_rule (re->context, re->current, re->current->source), to);
d(printf ("moving %d to %d\n", from, to));
rule_context_rank_rule (re->context, re->current, to);
item = g_list_nth_data (re->list->children, from);
l = g_list_append (NULL, item);
gtk_list_remove_items_no_unref (re->list, l);
gtk_list_insert_items (re->list, l, to);
gtk_list_select_child (re->list, GTK_WIDGET (item));
rule_editor_set_sensitive (re);
}
static void
rule_up (GtkWidget *widget, RuleEditor *re)
{
int pos;
d(printf ("up rule\n"));
pos = rule_context_get_rank_rule (re->context, re->current, re->source);
if (pos > 0)
rule_move (re, pos, pos - 1);
}
static void
rule_down (GtkWidget *widget, RuleEditor *re)
{
int pos;
d(printf ("down rule\n"));
pos = rule_context_get_rank_rule (re->context, re->current, re->source);
if (pos >= 0)
rule_move (re, pos, pos + 1);
}
static struct {
char *name;
GtkSignalFunc func;
} edit_buttons[] = {
{ "rule_add", rule_add },
{ "rule_edit", rule_edit },
{ "rule_delete", rule_delete },
{ "rule_up", rule_up },
{ "rule_down", rule_down },
};
static void
set_sensitive (RuleEditor *re)
{
FilterRule *rule = NULL;
int index = -1, count = 0;
while ((rule = rule_context_next_rule (re->context, rule, re->source))) {
if (rule == re->current)
index = count;
count++;
}
d(printf("index = %d count=%d\n", index, count));
count--;
gtk_widget_set_sensitive (GTK_WIDGET (re->priv->buttons[BUTTON_EDIT]), index != -1);
gtk_widget_set_sensitive (GTK_WIDGET (re->priv->buttons[BUTTON_DELETE]), index != -1);
gtk_widget_set_sensitive (GTK_WIDGET (re->priv->buttons[BUTTON_UP]), index > 0);
gtk_widget_set_sensitive (GTK_WIDGET (re->priv->buttons[BUTTON_DOWN]), index >= 0 && index < count);
}
static void
select_rule (GtkWidget *w, GtkWidget *child, RuleEditor *re)
{
re->current = g_object_get_data (child, "rule");
g_assert (re->current);
rule_editor_set_sensitive (re);
}
static gboolean
double_click (GtkWidget *widget, GdkEventButton *event, RuleEditor *re)
{
if (re->current && event->type == GDK_2BUTTON_PRESS)
rule_edit (widget, re);
return TRUE;
}
static void
set_source (RuleEditor *re, const char *source)
{
FilterRule *rule = NULL;
GList *newitems = NULL;
gtk_list_clear_items (GTK_LIST (re->list), 0, -1);
d(printf("Checking for rules that are of type %s\n", source?source:"<nil>"));
while ((rule = rule_context_next_rule (re->context, rule, source)) != NULL) {
GtkWidget *item;
d(printf(" hit %s(%s)\n", rule->name, source ? source : "<nil>"));
item = gtk_list_item_new_with_label (rule->name);
g_object_set_data (item, "rule", rule);
gtk_widget_show (GTK_WIDGET (item));
newitems = g_list_append (newitems, item);
}
gtk_list_append_items (re->list, newitems);
g_free (re->source);
re->source = g_strdup (source);
re->current = NULL;
rule_editor_set_sensitive (re);
}
void
rule_editor_add_undo (RuleEditor *re, int type, FilterRule *rule, int rank, int newrank)
{
RuleEditorUndo *undo;
if (!re->undo_active && enable_undo) {
undo = g_malloc0 (sizeof (*undo));
undo->rule = rule;
undo->type = type;
undo->rank = rank;
undo->newrank = newrank;
undo->next = re->undo_log;
re->undo_log = undo;
} else {
g_object_unref (rule);
}
}
void
rule_editor_play_undo (RuleEditor *re)
{
RuleEditorUndo *undo, *next;
FilterRule *rule;
re->undo_active = TRUE;
undo = re->undo_log;
re->undo_log = NULL;
while (undo) {
next = undo->next;
switch (undo->type) {
case RULE_EDITOR_LOG_EDIT:
printf("Undoing edit on rule '%s'\n", undo->rule->name);
rule = rule_context_find_rank_rule(re->context, undo->rank, undo->rule->source);
if (rule) {
printf(" name was '%s'\n", rule->name);
filter_rule_copy(rule, undo->rule);
printf(" name is '%s'\n", rule->name);
} else {
g_warning("Could not find the right rule to undo against?\n");
}
break;
case RULE_EDITOR_LOG_ADD:
printf("Undoing add on rule '%s'\n", undo->rule->name);
rule = rule_context_find_rank_rule(re->context, undo->rank, undo->rule->source);
if (rule)
rule_context_remove_rule(re->context, rule);
break;
case RULE_EDITOR_LOG_REMOVE:
printf("Undoing remove on rule '%s'\n", undo->rule->name);
g_object_ref (undo->rule);
rule_context_add_rule(re->context, undo->rule);
rule_context_rank_rule(re->context, undo->rule, undo->rank);
break;
case RULE_EDITOR_LOG_RANK:
rule = rule_context_find_rank_rule(re->context, undo->newrank, undo->rule->source);
if (rule)
rule_context_rank_rule(re->context, rule, undo->rank);
break;
}
g_object_unref (undo->rule);
g_free(undo);
undo = next;
}
re->undo_active = FALSE;
}
static void
editor_clicked (GtkWidget *dialog, int button, RuleEditor *re)
{
if (button != 0) {
if (enable_undo)
rule_editor_play_undo(re);
else {
RuleEditorUndo *undo, *next;
undo = re->undo_log;
re->undo_log = 0;
while (undo) {
next = undo->next;
g_object_unref (undo->rule);
g_free(undo);
undo = next;
}
}
}
}
void
rule_editor_construct (RuleEditor *re, RuleContext *context, GladeXML *gui, const char *source)
{
GtkWidget *w;
int i;
re->context = context;
g_object_ref (context);
gtk_window_set_policy (GTK_WINDOW (re), FALSE, TRUE, FALSE);
w = glade_xml_get_widget (gui, "rule_editor");
gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (re)->vbox), w, TRUE, TRUE, 0);
for (i = 0; i < BUTTON_LAST; i++) {
re->priv->buttons[i] = (GtkButton *)w = glade_xml_get_widget (gui, edit_buttons[i].name);
g_signal_connect (w, "clicked", edit_buttons[i].func, re);
}
re->list = (GtkList *) w = glade_xml_get_widget(gui, "rule_list");
g_signal_connect (w, "select_child", select_rule, re);
g_signal_connect (w, "button_press_event", double_click, re);
g_signal_connect (re, "clicked", editor_clicked, re);
rule_editor_set_source (re, source);
if (enable_undo) {
gnome_dialog_append_buttons (GNOME_DIALOG (re), GNOME_STOCK_BUTTON_OK,
GNOME_STOCK_BUTTON_CANCEL, NULL);
} else
gnome_dialog_append_buttons (GNOME_DIALOG (re), GNOME_STOCK_BUTTON_OK, NULL);
}