path: root/filter/score-rule.c

/*
 *  Copyright (C) 2000 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 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 <string.h>

#include <glib.h>
#include <gtk/gtkbox.h>
#include <gtk/gtkframe.h>
#include <gtk/gtkhbox.h>
#include <gtk/gtklabel.h>
#include <gtk/gtksignal.h>
#include <gtk/gtkspinbutton.h>
#include <libgnome/gnome-defs.h>
#include <libgnome/gnome-i18n.h>

#include "score-rule.h"

static xmlNodePtr xml_encode(FilterRule *);
static int xml_decode(FilterRule *, xmlNodePtr, struct _RuleContext *f);
/*static void build_code(FilterRule *, GString *out);*/
static GtkWidget *get_widget(FilterRule *fr, struct _RuleContext *f);

static void score_rule_class_init   (ScoreRuleClass *class);
static void score_rule_init (ScoreRule *gspaper);
static void score_rule_finalise (GtkObject *obj);

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

struct _ScoreRulePrivate {
};

static FilterRuleClass *parent_class;

enum {
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };

guint
score_rule_get_type (void)
{
    static guint type = 0;
    
    if (!type) {
        GtkTypeInfo type_info = {
            "ScoreRule",
            sizeof(ScoreRule),
            sizeof(ScoreRuleClass),
            (GtkClassInitFunc)score_rule_class_init,
            (GtkObjectInitFunc)score_rule_init,
            (GtkArgSetFunc)NULL,
            (GtkArgGetFunc)NULL
        };
        
        type = gtk_type_unique (filter_rule_get_type (), &type_info);
    }
    
    return type;
}

static void
score_rule_class_init (ScoreRuleClass *class)
{
    GtkObjectClass *object_class;
    FilterRuleClass *rule_class = (FilterRuleClass *)class;
    
    object_class = (GtkObjectClass *)class;
    parent_class = gtk_type_class (filter_rule_get_type ());
    
    object_class->finalize = score_rule_finalise;
    
    /* override methods */
    rule_class->xml_encode = xml_encode;
    rule_class->xml_decode = xml_decode;
/*  rule_class->build_code = build_code;*/
    rule_class->get_widget = get_widget;
    
    /* signals */
    
    gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);
}

static void
score_rule_init (ScoreRule *o)
{
    o->priv = g_malloc0 (sizeof (*o->priv));
}

static void
score_rule_finalise (GtkObject *obj)
{
    ScoreRule *o = (ScoreRule *)obj;
    
    o = o;
    
        ((GtkObjectClass *)(parent_class))->finalize (obj);
}

/**
 * score_rule_new:
 *
 * Create a new ScoreRule object.
 * 
 * Return value: A new #ScoreRule object.
 **/
ScoreRule *
score_rule_new (void)
{
    ScoreRule *o = (ScoreRule *)gtk_type_new (score_rule_get_type ());
    return o;
}

static xmlNodePtr
xml_encode (FilterRule *fr)
{
    ScoreRule *sr = (ScoreRule *)fr;
    xmlNodePtr node, value;
    char number[16];
    
    node = ((FilterRuleClass *)(parent_class))->xml_encode (fr);
    sprintf (number, "%d", sr->score);
    value = xmlNewNode (NULL, "score");
    xmlSetProp (value, "value", number);
    xmlAddChild (node, value);
    
    return node;
}

static int
xml_decode (FilterRule *fr, xmlNodePtr node, struct _RuleContext *f)
{
    ScoreRule *sr = (ScoreRule *)fr;
    xmlNodePtr value;
    int result;
    char *str;
    
    result = ((FilterRuleClass *)(parent_class))->xml_decode (fr, node, f);
    if (result != 0)
        return result;
    
    value = node->childs;
    while (value) {
        if (!strcmp (value->name, "score")) {
            str = xmlGetProp (value, "value");
            sscanf (str, "%d", &sr->score);
            xmlFree (str);
            
            /* score range is -3 to +3 */
            if (sr->score > 3)
                sr->score = 3;
            else if (sr->score < -3)
                sr->score = -3;
        }
        value = value->next;
    }
    
    return 0;
}

/*static void build_code(FilterRule *fr, GString *out)
{
}*/

static void
spin_changed (GtkAdjustment *adj, ScoreRule *sr)
{
    sr->score = adj->value;
}

static GtkWidget *
get_widget (FilterRule *fr, struct _RuleContext *f)
{
    GtkWidget *widget;
    GtkWidget *frame;
    GtkWidget *label;
    GtkWidget *hbox;
    GtkAdjustment *adj;
    ScoreRule *sr = (ScoreRule *)fr;
    GtkWidget *spin;
    
        widget = ((FilterRuleClass *)(parent_class))->get_widget (fr, f);
    
    frame = gtk_frame_new (_("Score"));
    hbox = gtk_hbox_new (FALSE, 3);
    label = gtk_label_new (_("Score"));
    
    gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 3);
    adj = (GtkAdjustment *)gtk_adjustment_new ((float) sr->score, -3.0, 3.0, 1.0, 1.0, 1.0);
    gtk_signal_connect (GTK_OBJECT (adj), "value_changed", spin_changed, sr);
    
    spin = gtk_spin_button_new (adj, 1.0, 0);
    gtk_box_pack_start (GTK_BOX (hbox), spin, FALSE, FALSE, 3);
    gtk_container_add (GTK_CONTAINER (frame), hbox);
    
    gtk_widget_show_all (frame);
    
    gtk_box_pack_start (GTK_BOX (widget), frame, FALSE, FALSE, 3);
    
    return widget;
}