path: root/filter/filter-editor.c

/*
 *  Copyright (C) 2000 Helix Code Inc.
 *
 *  Authors: Not Zed <notzed@lostzed.mmc.com.au>
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library 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 Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public
 *  License along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <gtk/gtk.h>
#include <gnome.h>
#include <glade/glade.h>

#include <gal/widgets/e-unicode.h>
#include "filter-editor.h"
#include "filter-context.h"
#include "filter-filter.h"

#define d(x)

#if 0
static void filter_editor_class_init    (FilterEditorClass *class);
static void filter_editor_init  (FilterEditor *gspaper);
static void filter_editor_finalise  (GtkObject *obj);

#define _PRIVATE(x) (((FilterEditor *)(x))->priv)

struct _FilterEditorPrivate {
};

static GnomeDialogClass *parent_class;

enum {
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };

guint
filter_editor_get_type (void)
{
    static guint type = 0;
    
    if (!type) {
        GtkTypeInfo type_info = {
            "FilterEditor",
            sizeof(FilterEditor),
            sizeof(FilterEditorClass),
            (GtkClassInitFunc)filter_editor_class_init,
            (GtkObjectInitFunc)filter_editor_init,
            (GtkArgSetFunc)NULL,
            (GtkArgGetFunc)NULL
        };
        
        type = gtk_type_unique(gnome_dialog_get_type (), &type_info);
    }
    
    return type;
}

static void
filter_editor_class_init (FilterEditorClass *class)
{
    GtkObjectClass *object_class;
    
    object_class = (GtkObjectClass *)class;
    parent_class = gtk_type_class(gnome_dialog_get_type ());

    object_class->finalize = filter_editor_finalise;
    /* override methods */

    /* signals */

    gtk_object_class_add_signals(object_class, signals, LAST_SIGNAL);
}

static void
filter_editor_init (FilterEditor *o)
{
    o->priv = g_malloc0(sizeof(*o->priv));
}

static void
filter_editor_finalise(GtkObject *obj)
{
    FilterEditor *o = (FilterEditor *)obj;

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

/**
 * filter_editor_new:
 *
 * Create a new FilterEditor object.
 * 
 * Return value: A new #FilterEditor object.
 **/
FilterEditor *
filter_editor_new(void)
{
    FilterEditor *o = (FilterEditor *)gtk_type_new(filter_editor_get_type ());
    return o;
}

#endif


enum {
    BUTTON_ADD,
    BUTTON_EDIT,
    BUTTON_DELETE,
    BUTTON_UP,
    BUTTON_DOWN,
    BUTTON_LAST
};

struct _editor_data {
    RuleContext *f;
    FilterRule *current;
    GtkList *list;
    GtkButton *buttons[BUTTON_LAST];
    enum _filter_source_t current_source;
};

static void set_sensitive(struct _editor_data *data);

static void rule_add(GtkWidget *widget, struct _editor_data *data)
{
    FilterFilter *rule;
    int result;
    GnomeDialog *gd;
    GtkWidget *w;
    FilterPart *part;

    d(printf("add rule\n"));
    /* create a new rule with 1 match and 1 action */
    rule = filter_filter_new();
    ((FilterRule *)rule)->source = data->current_source;

    part = rule_context_next_part(data->f, NULL);
    filter_rule_add_part((FilterRule *)rule, filter_part_clone(part));
    part = filter_context_next_action((FilterContext *)data->f, NULL);
    filter_filter_add_action(rule, filter_part_clone(part));

    w = filter_rule_get_widget((FilterRule *)rule, data->f);
    gd = (GnomeDialog *)gnome_dialog_new(_("Add Rule"), GNOME_STOCK_BUTTON_OK, GNOME_STOCK_BUTTON_CANCEL, NULL);
    gtk_box_pack_start((GtkBox *)gd->vbox, w, FALSE, TRUE, 0);
    gtk_widget_show((GtkWidget *)gd);
    result = gnome_dialog_run_and_close(gd);
    if (result == 0) {
        GtkListItem *item;
        GList *l = NULL;
        gchar *s = e_utf8_to_gtk_string ((GtkWidget *) data->list, ((FilterRule *)rule)->name);
        item = (GtkListItem *)gtk_list_item_new_with_label (s);
        g_free (s);
        gtk_object_set_data((GtkObject *)item, "rule", rule);
        gtk_widget_show((GtkWidget *)item);
        l = g_list_append(l, item);
        gtk_list_append_items(data->list, l);
        gtk_list_select_child(data->list, (GtkWidget *)item);
        data->current = (FilterRule *)rule;
        rule_context_add_rule(data->f, (FilterRule *)rule);
        set_sensitive(data);
    } else {
        gtk_object_unref((GtkObject *)rule);
    }
}

static void rule_edit(GtkWidget *widget, struct _editor_data *data)
{
    GtkWidget *w;
    int result;
    GnomeDialog *gd;
    FilterRule *rule;
    int pos;

    d(printf("edit rule\n"));
    rule = data->current;
    w = filter_rule_get_widget(rule, data->f);
    gd = (GnomeDialog *)gnome_dialog_new(_("Edit Rule"),
                         GNOME_STOCK_BUTTON_OK, GNOME_STOCK_BUTTON_CANCEL,
                         NULL);
    gtk_box_pack_start((GtkBox *)gd->vbox, w, FALSE, TRUE, 0);
    gtk_widget_show((GtkWidget *)gd);
    result = gnome_dialog_run_and_close(gd);

    if (result == 0) {
        pos = rule_context_get_rank_rule_with_source (data->f, data->current, data->current_source);
        if (pos != -1) {
            GtkListItem *item = g_list_nth_data(data->list->children, pos);
            gchar *s = e_utf8_to_gtk_string ((GtkWidget *) item, data->current->name);
            gtk_label_set_text((GtkLabel *)(((GtkBin *)item)->child), s);
            g_free (s);
        }
     }
}

static void rule_delete(GtkWidget *widget, struct _editor_data *data)
{
    int pos;
    GList *l;
    GtkListItem *item;

    d(printf("ddelete rule\n"));
    pos = rule_context_get_rank_rule_with_source (data->f, data->current, data->current_source);
    if (pos != -1) {
        rule_context_remove_rule(data->f, data->current);

        item = g_list_nth_data(data->list->children, pos);
        l = g_list_append(NULL, item);
        gtk_list_remove_items(data->list, l);
        g_list_free(l);

        gtk_object_unref((GtkObject *)data->current);
        data->current = NULL;
    }
    set_sensitive(data);
}

static void rule_move(struct _editor_data *data, int from, int to)
{
    GList *l;
    GtkListItem *item;

    d(printf("moving %d to %d\n", from, to));
    rule_context_rank_rule(data->f, data->current, to);
    
    item = g_list_nth_data(data->list->children, from);
    l = g_list_append(NULL, item);
    gtk_list_remove_items_no_unref(data->list, l);
    gtk_list_insert_items(data->list, l, to);                 
    gtk_list_select_child(data->list, (GtkWidget *)item);
    set_sensitive(data);
}

static void rule_up(GtkWidget *widget, struct _editor_data *data)
{
    int pos;

    d(printf("up rule\n"));
    pos = rule_context_get_rank_rule_with_source(data->f, data->current, data->current_source);
    if (pos>0) {
        rule_move(data, pos, pos-1);
    }
}

static void rule_down(GtkWidget *widget, struct _editor_data *data)
{
    int pos;

    d(printf("down rule\n"));
    pos = rule_context_get_rank_rule_with_source(data->f, data->current, data->current_source);
    rule_move(data, 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(struct _editor_data *data)
{
    FilterRule *rule = NULL;
    int index=-1, count=0;

    while ((rule = rule_context_next_rule(data->f, rule))) {
        if (rule == data->current)
            index=count;
        count++;
    }
    d(printf("index = %d count=%d\n", index, count));
    count--;
    gtk_widget_set_sensitive((GtkWidget *)data->buttons[BUTTON_EDIT], index != -1);
    gtk_widget_set_sensitive((GtkWidget *)data->buttons[BUTTON_DELETE], index != -1);
    gtk_widget_set_sensitive((GtkWidget *)data->buttons[BUTTON_UP], index > 0);
    gtk_widget_set_sensitive((GtkWidget *)data->buttons[BUTTON_DOWN], index >=0 && index<count);
}

static void
select_rule(GtkWidget *w, GtkWidget *child, struct _editor_data *data)
{
    data->current = gtk_object_get_data((GtkObject *)child, "rule");
    if (data->current)
        d(printf("seledct rule: %s\n", data->current->name));
    else
        d(printf("bad data?\n"));
    set_sensitive(data);
}

/* FIXME: we need a way to change a rule from one source type
 * to a different type. Maybe keep the selected ones? 
 */

static void
select_source (GtkMenuItem *mi, struct _editor_data *data)
{
    FilterRule *rule = NULL;
    GList *newitems = NULL;
    enum _filter_source_t source;

    source = (enum _filter_source_t) GPOINTER_TO_INT (
        gtk_object_get_data (GTK_OBJECT (mi), "number"));

    gtk_list_clear_items (GTK_LIST (data->list), 0, -1);

    d(printf("Checking for rules that are of type %d\n", source));
    while ((rule = rule_context_next_rule (data->f, rule)) != NULL) {
        GtkWidget *item;
        gchar *s;

        if (rule->source != source) {
            d(printf("   skipping %s: %d != %d\n", rule->name, rule->source, source));
            continue;
        }

        d(printf("   hit %s (%d)\n", rule->name, source));
        s = e_utf8_to_gtk_string ((GtkWidget *) data->list, rule->name);
        item = gtk_list_item_new_with_label (s);
        g_free (s);
        gtk_object_set_data (GTK_OBJECT (item), "rule", rule);
        gtk_widget_show (GTK_WIDGET (item));
        newitems = g_list_append (newitems, item);
    }

    gtk_list_append_items (data->list, newitems);
    data->current_source = source;
    data->current = NULL;
    set_sensitive (data);
}

GtkWidget   *filter_editor_construct    (struct _FilterContext *f)
{
    GladeXML *gui;
    GtkWidget *d, *w, *b, *firstitem = NULL;
    GList *l;
    struct _editor_data *data;
    int i;

    g_assert(IS_FILTER_CONTEXT(f));

    data = g_malloc0(sizeof(*data));
    data->f = (RuleContext *)f;

    gui = glade_xml_new(FILTER_GLADEDIR "/filter.glade", "edit_filter");
        d = glade_xml_get_widget (gui, "edit_filter");
    gtk_object_set_data_full((GtkObject *)d, "data", data, g_free);

    gtk_window_set_title((GtkWindow *)d, "Edit Filters");
    for (i=0;i<BUTTON_LAST;i++) {
        data->buttons[i] = (GtkButton *)w = glade_xml_get_widget (gui, edit_buttons[i].name);
        gtk_signal_connect((GtkObject *)w, "clicked", edit_buttons[i].func, data);
    }

        w = glade_xml_get_widget (gui, "filter_source");
    l = GTK_MENU_SHELL(GTK_OPTION_MENU(w)->menu)->children;
    i = 0;
    while (l) {
        b = GTK_WIDGET (l->data);

        if (i == 0)
            firstitem = b;

        /* make sure that the glade is in sync with enum _filter_source_t! */
        gtk_object_set_data (GTK_OBJECT (b), "number", GINT_TO_POINTER (i));
        gtk_signal_connect (GTK_OBJECT (b), "activate", select_source, data);

        i++;
        l = l->next;
    }

        w = glade_xml_get_widget (gui, "rule_list");
    data->list = (GtkList *)w;
    gtk_signal_connect((GtkObject *)w, "select_child", select_rule, data);
    select_source (GTK_MENU_ITEM (firstitem), data);

    gtk_object_unref((GtkObject *)gui);

    return d;
}