path: root/filter/filter-editor.c

/*
 *  Copyright (C) 2000 Helix Code Inc.
 *
 *  Authors: Not Zed <notzed@lostzed.mmc.com.au>
 *           Jeffrey Stedfast <fejj@helixcode.com>
 *
 *  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 <config.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];
    char *current_source;
};

static void set_sensitive (struct _editor_data *data);

static void
rule_add (GtkWidget *widget, struct _editor_data *data)
{
    FilterFilter *rule;
    int result;
    GtkWidget *gd;
    GtkWidget *w;
    FilterPart *part;
    gboolean done = FALSE;
    
    d(printf ("add rule\n"));
    /* create a new rule with 1 match and 1 action */
    rule = filter_filter_new ();
    filter_rule_set_source ((FilterRule *)rule, 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 = gnome_dialog_new (_("Add Filter Rule"),
                   GNOME_STOCK_BUTTON_OK,
                   GNOME_STOCK_BUTTON_CANCEL,
                   NULL);
    gtk_window_set_policy (GTK_WINDOW (gd), FALSE, TRUE, FALSE);
    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (gd)->vbox), w, TRUE, TRUE, 0);
    
    gtk_widget_show (gd);
    
    while (!done) {
        result = gnome_dialog_run (GNOME_DIALOG (gd));
    
        if (result == 0) {
            GtkWidget *item;
            GList *parts, *l = NULL;
            gchar *s;
            
            done = TRUE;
            
            /* validate rule parts */
            parts = ((FilterRule *)rule)->parts;
            while (parts && done) {
                done = filter_part_validate ((FilterPart *) parts->data);
                parts = parts->next;
            }
            
            /* validate action parts */
            parts = rule->actions;
            while (parts && done) {
                done = filter_part_validate ((FilterPart *) parts->data);
                parts = parts->next;
            }
            
            if (done) {
                s = e_utf8_to_gtk_string (GTK_WIDGET (data->list), ((FilterRule *)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 (item);
                
                l = g_list_append (l, GTK_LIST_ITEM (item));
                
                gtk_list_append_items (data->list, l);
                gtk_list_select_child (data->list, item);
                
                data->current = (FilterRule *)rule;
                rule_context_add_rule (data->f, (FilterRule *)rule);
                
                set_sensitive (data);
                gtk_widget_destroy (gd);
            }
        } else {
            gtk_widget_destroy (gd);
            gtk_object_unref (GTK_OBJECT (rule));
            done = TRUE;
        }
    }
}

static void
rule_edit (GtkWidget *widget, struct _editor_data *data)
{
    GtkWidget *w;
    int result;
    GtkWidget *gd;
    FilterRule *rule;
    gboolean done = FALSE;
    int pos;
    
    d(printf ("edit rule\n"));
    rule = data->current;
    w = filter_rule_get_widget (rule, data->f);
    gd = gnome_dialog_new (_("Edit Filter Rule"),
                   GNOME_STOCK_BUTTON_OK,
                   GNOME_STOCK_BUTTON_CANCEL,
                   NULL);
    gtk_window_set_policy (GTK_WINDOW (gd), FALSE, TRUE, FALSE);
    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (gd)->vbox), w, TRUE, TRUE, 0);
    
    gtk_widget_show (gd);
    
    while (!done) {
        result = gnome_dialog_run (GNOME_DIALOG (gd));
        
        if (result == 0) {
            GList *parts;
            
            done = TRUE;
            
            /* validate rule parts */
            parts = rule->parts;
            while (parts && done) {
                done = filter_part_validate ((FilterPart *) parts->data);
                parts = parts->next;
            }
            
            /* validate action parts */
            parts = ((FilterFilter *)rule)->actions;
            while (parts && done) {
                done = filter_part_validate ((FilterPart *) parts->data);
                parts = parts->next;
            }
            
            if (done) {
                pos = rule_context_get_rank_rule (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 (GTK_WIDGET (item), data->current->name);
                    gtk_label_set_text (GTK_LABEL (GTK_BIN (item)->child), s);
                    g_free (s);
                }
                gtk_widget_destroy (gd);
            }
        } else {
            gtk_widget_destroy (gd);
            done = TRUE;
        }
    }
}

static void
rule_delete (GtkWidget *widget, struct _editor_data *data)
{
    int pos;
    GList *l;
    GtkListItem *item;
    
    d(printf("delete rule\n"));
    pos = rule_context_get_rank_rule(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 (GTK_OBJECT (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, GTK_WIDGET (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 (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 (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, data->current_source))) {
        if (rule == data->current)
            index = count;
        count++;
    }
    
    d(printf ("index = %d count=%d\n", index, count));
    
    count--;
    
    gtk_widget_set_sensitive (GTK_WIDGET (data->buttons[BUTTON_EDIT]), index != -1);
    gtk_widget_set_sensitive (GTK_WIDGET (data->buttons[BUTTON_DELETE]), index != -1);
    gtk_widget_set_sensitive (GTK_WIDGET (data->buttons[BUTTON_UP]), index > 0);
    gtk_widget_set_sensitive (GTK_WIDGET (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 (GTK_OBJECT (child), "rule");
    
    if (data->current)
        d(printf ("selected rule: %s\n", data->current->name));
    else
        d(printf ("bad data?\n"));
    
    set_sensitive (data);
}

static void
double_click (GtkWidget *widget, GdkEventButton *event, gpointer user_data)
{
    if (event->type == GDK_2BUTTON_PRESS)
        rule_edit (widget, user_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;
    char *source;
    
    source = gtk_object_get_data (GTK_OBJECT (mi), "source");
    
    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, source)) != NULL) {
        GtkWidget *item;
        char *s;
        
        d(printf ("   hit %s (%d)\n", rule->name, source));
        s = e_utf8_to_gtk_string (GTK_WIDGET (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);
}

static char *source_names[] = {
    "incoming",
    /*"demand",*/
    "outgoing"
};

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 (GTK_OBJECT (d), "data", data, g_free);
    
    gtk_window_set_title (GTK_WINDOW (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 (GTK_OBJECT (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 the source list! */
        if (i < sizeof (source_names) / sizeof (source_names[0])) {
            gtk_object_set_data (GTK_OBJECT (b), "source", source_names[i]);
        } else {
            g_warning("Glade file " FILTER_GLADEDIR "/filter.glade out of sync with editor code");
        }
        gtk_signal_connect (GTK_OBJECT (b), "activate", select_source, data);
        
        i++;
        l = l->next;
    }
    
        w = glade_xml_get_widget (gui, "rule_list");
    data->list = GTK_LIST (w);
    gtk_signal_connect (GTK_OBJECT (w), "select_child", select_rule, data);
    gtk_signal_connect (GTK_OBJECT (w), "button_press_event", double_click, data);
    select_source (GTK_MENU_ITEM (firstitem), data);
    
    set_sensitive (data);
    
    gtk_object_unref (GTK_OBJECT (gui));
    
    return d;
}