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/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Jeffrey Stedfast <fejj@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdlib.h>
#include <gtk/gtk.h>

#include <libedataserver/e-sexp.h>
#include "filter-int.h"

#define d(x)

static gint int_eq (FilterElement *fe, FilterElement *cm);
static FilterElement *int_clone(FilterElement *fe);
static void xml_create (FilterElement *fe, xmlNodePtr node);
static xmlNodePtr xml_encode (FilterElement *fe);
static gint xml_decode (FilterElement *fe, xmlNodePtr node);
static GtkWidget *get_widget (FilterElement *fe);
static void build_code (FilterElement *fe, GString *out, struct _FilterPart *ff);
static void format_sexp (FilterElement *fe, GString *out);

static void filter_int_class_init (FilterIntClass *klass);
static void filter_int_init (FilterInt *fi);
static void filter_int_finalise (GObject *obj);

static FilterElementClass *parent_class;

GType
filter_int_get_type (void)
{
    static GType type = 0;

    if (!type) {
        static const GTypeInfo info = {
            sizeof (FilterIntClass),
            NULL, /* base_class_init */
            NULL, /* base_class_finalize */
            (GClassInitFunc) filter_int_class_init,
            NULL, /* class_finalize */
            NULL, /* class_data */
            sizeof (FilterInt),
            0,    /* n_preallocs */
            (GInstanceInitFunc) filter_int_init,
        };

        type = g_type_register_static (FILTER_TYPE_ELEMENT, "FilterInt", &info, 0);
    }

    return type;
}

static void
filter_int_class_init (FilterIntClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);
    FilterElementClass *fe_class = FILTER_ELEMENT_CLASS (klass);

    parent_class = g_type_class_ref (FILTER_TYPE_ELEMENT);

    object_class->finalize = filter_int_finalise;

    /* override methods */
    fe_class->eq = int_eq;
    fe_class->clone = int_clone;
    fe_class->xml_create = xml_create;
    fe_class->xml_encode = xml_encode;
    fe_class->xml_decode = xml_decode;
    fe_class->get_widget = get_widget;
    fe_class->build_code = build_code;
    fe_class->format_sexp = format_sexp;
}

static void
filter_int_init (FilterInt *fi)
{
    fi->min = 0;
    fi->max = G_MAXINT;
}

static void
filter_int_finalise (GObject *obj)
{
    FilterInt *fi = (FilterInt *) obj;

    g_free (fi->type);

        G_OBJECT_CLASS (parent_class)->finalize (obj);
}

/**
 * filter_int_new:
 *
 * Create a new FilterInt object.
 *
 * Return value: A new #FilterInt object.
 **/
FilterInt *
filter_int_new (void)
{
    return (FilterInt *) g_object_new (FILTER_TYPE_INT, NULL, NULL);
}

FilterInt *
filter_int_new_type (const gchar *type, gint min, gint max)
{
    FilterInt *fi;

    fi = filter_int_new ();

    fi->type = g_strdup (type);
    fi->min = min;
    fi->max = max;

    return fi;
}

void
filter_int_set_value (FilterInt *fi, gint val)
{
    fi->val = val;
}

static gint
int_eq (FilterElement *fe, FilterElement *cm)
{
        return FILTER_ELEMENT_CLASS (parent_class)->eq (fe, cm)
        && ((FilterInt *)fe)->val == ((FilterInt *)cm)->val;
}

static FilterElement *
int_clone(FilterElement *fe)
{
    FilterInt *fi, *fs;

    fs = (FilterInt *)fe;
    fi = filter_int_new_type(fs->type, fs->min, fs->max);
    fi->val = fs->val;
    ((FilterElement *)fi)->name = g_strdup(fe->name);

    return (FilterElement *)fi;
}

static void
xml_create (FilterElement *fe, xmlNodePtr node)
{
    /* parent implementation */
        FILTER_ELEMENT_CLASS (parent_class)->xml_create (fe, node);
}

static xmlNodePtr
xml_encode (FilterElement *fe)
{
    xmlNodePtr value;
    FilterInt *fs = (FilterInt *)fe;
    gchar intval[32];
    const gchar *type;

    type = fs->type?fs->type:"integer";

    d(printf("Encoding %s as xml\n", type));

    value = xmlNewNode (NULL, (const guchar *)"value");
    xmlSetProp (value, (const guchar *)"name", (guchar *)fe->name);
    xmlSetProp (value, (const guchar *)"type", (guchar *)type);

    sprintf(intval, "%d", fs->val);
    xmlSetProp (value, (guchar *)type, (guchar *)intval);

    return value;
}

static gint
xml_decode (FilterElement *fe, xmlNodePtr node)
{
    FilterInt *fs = (FilterInt *)fe;
    gchar *name, *type;
    gchar *intval;

    d(printf("Decoding integer from xml %p\n", fe));

    name = (gchar *)xmlGetProp (node, (const guchar *)"name");
    d(printf ("Name = %s\n", name));
    xmlFree (fe->name);
    fe->name = name;

    type = (gchar *)xmlGetProp(node, (const guchar *)"type");
    d(printf ("Type = %s\n", type));
    g_free(fs->type);
    fs->type = g_strdup(type);
    xmlFree(type);

    intval = (gchar *)xmlGetProp (node, (guchar *)(fs->type ? fs->type : "integer"));
    if (intval) {
        d(printf ("Value = %s\n", intval));
        fs->val = atoi (intval);
        xmlFree (intval);
    } else {
        d(printf ("Value = ?unknown?\n"));
        fs->val = 0;
    }

    return 0;
}

static void
spin_changed (GtkWidget *spin, FilterElement *fe)
{
    FilterInt *fs = (FilterInt *)fe;

    fs->val = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (spin));
}

static GtkWidget *
get_widget (FilterElement *fe)
{
    GtkWidget *spin;
    GtkObject *adjustment;
    FilterInt *fs = (FilterInt *)fe;

    adjustment = gtk_adjustment_new (0.0, (gfloat)fs->min, (gfloat)fs->max, 1.0, 1.0, 0);
    spin = gtk_spin_button_new (GTK_ADJUSTMENT (adjustment), fs->max>fs->min+1000?5.0:1.0, 0);
    gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spin), TRUE);

    if (fs->val)
        gtk_spin_button_set_value (GTK_SPIN_BUTTON (spin), (gfloat) fs->val);

    g_signal_connect (spin, "value-changed", G_CALLBACK (spin_changed), fe);

    return spin;
}

static void
build_code (FilterElement *fe, GString *out, struct _FilterPart *ff)
{
    return;
}

static void
format_sexp (FilterElement *fe, GString *out)
{
    FilterInt *fs = (FilterInt *)fe;

    if (fs->val < 0)
        /* See #364731 #457523 C6*/
        g_string_append_printf (out, "(- %d)", (fs->val * -1));
    else
        g_string_append_printf (out, "%d", fs->val);
}