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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* 
 * e-table-field-chooser.c
 * Copyright 2000, 2001, Ximian, Inc.
 *
 * Authors:
 *   Chris Lahey <clahey@ximian.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License, version 2, as published by the Free Software Foundation.
 *
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */

#include <config.h>
#include <libgnomeui/gnome-canvas-rect-ellipse.h>
#include "e-table-field-chooser.h"
#include "e-table-field-chooser-item.h"

static void e_table_field_chooser_init      (ETableFieldChooser      *card);
static void e_table_field_chooser_class_init    (ETableFieldChooserClass     *klass);
static void e_table_field_chooser_set_arg (GtkObject *o, GtkArg *arg, guint arg_id);
static void e_table_field_chooser_get_arg (GtkObject *object, GtkArg *arg, guint arg_id);
static void e_table_field_chooser_destroy (GtkObject *object);

static GtkVBoxClass *parent_class = NULL;

/* The arguments we take */
enum {
    ARG_0,
    ARG_FULL_HEADER,
    ARG_HEADER,
    ARG_DND_CODE
};

GtkType
e_table_field_chooser_get_type (void)
{
    static GtkType table_field_chooser_type = 0;

    if (!table_field_chooser_type)
        {
            static const GtkTypeInfo table_field_chooser_info =
            {
                "ETableFieldChooser",
                sizeof (ETableFieldChooser),
                sizeof (ETableFieldChooserClass),
                (GtkClassInitFunc) e_table_field_chooser_class_init,
                (GtkObjectInitFunc) e_table_field_chooser_init,
                /* reserved_1 */ NULL,
                /* reserved_2 */ NULL,
                (GtkClassInitFunc) NULL,
            };

            table_field_chooser_type = gtk_type_unique (gtk_vbox_get_type (), &table_field_chooser_info);
        }

    return table_field_chooser_type;
}

static void
e_table_field_chooser_class_init (ETableFieldChooserClass *klass)
{
    GtkObjectClass *object_class;
    GtkVBoxClass *vbox_class;

    object_class = (GtkObjectClass*) klass;
    vbox_class = (GtkVBoxClass *) klass;

    glade_gnome_init();

    parent_class = gtk_type_class (gtk_vbox_get_type ());

    object_class->set_arg = e_table_field_chooser_set_arg;
    object_class->get_arg = e_table_field_chooser_get_arg;
    object_class->destroy = e_table_field_chooser_destroy;
    gtk_object_add_arg_type ("ETableFieldChooser::dnd_code", GTK_TYPE_STRING,
                 GTK_ARG_READWRITE, ARG_DND_CODE);
    gtk_object_add_arg_type ("ETableFieldChooser::full_header", GTK_TYPE_OBJECT,
                 GTK_ARG_READWRITE, ARG_FULL_HEADER);
    gtk_object_add_arg_type ("ETableFieldChooser::header", GTK_TYPE_OBJECT,
                 GTK_ARG_READWRITE, ARG_HEADER);
}

static void allocate_callback(GtkWidget *canvas, GtkAllocation *allocation, ETableFieldChooser *etfc)
{
    double height;
    etfc->last_alloc = *allocation;
    gnome_canvas_item_set( etfc->item,
                   "width", (double) allocation->width,
                   NULL );
    gtk_object_get(GTK_OBJECT(etfc->item),
               "height", &height,
               NULL);
    height = MAX(height, allocation->height);
    gnome_canvas_set_scroll_region(GNOME_CANVAS( etfc->canvas ), 0, 0, allocation->width - 1, height - 1);
    gnome_canvas_item_set( etfc->rect,
                   "x2", (double) allocation->width,
                   "y2", (double) height,
                   NULL );
}

static void resize(GnomeCanvas *canvas, ETableFieldChooser *etfc)
{
    double height;
    gtk_object_get(GTK_OBJECT(etfc->item),
               "height", &height,
               NULL);

    height = MAX(height, etfc->last_alloc.height);

    gnome_canvas_set_scroll_region (GNOME_CANVAS(etfc->canvas), 0, 0, etfc->last_alloc.width - 1, height - 1);
    gnome_canvas_item_set( etfc->rect,
                   "x2", (double) etfc->last_alloc.width,
                   "y2", (double) height,
                   NULL );  
}

static void
e_table_field_chooser_init (ETableFieldChooser *etfc)
{
    GladeXML *gui;
    GtkWidget *widget;

    gui = glade_xml_new_with_domain (ETABLE_GLADEDIR "/e-table-field-chooser.glade", NULL, PACKAGE);
    etfc->gui = gui;

    widget = glade_xml_get_widget(gui, "vbox-top");
    if (!widget) {
        return;
    }
    gtk_widget_reparent(widget,
                GTK_WIDGET(etfc));

    gtk_widget_push_visual (gdk_rgb_get_visual ());
    gtk_widget_push_colormap (gdk_rgb_get_cmap ());

    etfc->canvas = GNOME_CANVAS(glade_xml_get_widget(gui, "canvas-buttons"));

    etfc->rect = gnome_canvas_item_new(gnome_canvas_root( GNOME_CANVAS( etfc->canvas ) ),
                       gnome_canvas_rect_get_type(),
                       "x1", (double) 0,
                       "y1", (double) 0,
                       "x2", (double) 100,
                       "y2", (double) 100,
                       "fill_color", "white",
                       NULL );

    etfc->item = gnome_canvas_item_new(gnome_canvas_root(etfc->canvas),
                       e_table_field_chooser_item_get_type(),
                       "width", (double) 100,
                       "full_header", etfc->full_header,
                       "header", etfc->header,
                       "dnd_code", etfc->dnd_code,
                       NULL );

    gtk_signal_connect( GTK_OBJECT( etfc->canvas ), "reflow",
                GTK_SIGNAL_FUNC( resize ),
                etfc);

    gnome_canvas_set_scroll_region ( GNOME_CANVAS( etfc->canvas ),
                     0, 0,
                     100, 100 );

    /* Connect the signals */
    gtk_signal_connect (GTK_OBJECT (etfc->canvas), "size_allocate",
                GTK_SIGNAL_FUNC (allocate_callback),
                etfc);

    gtk_widget_pop_visual ();
    gtk_widget_pop_colormap ();
    gtk_widget_show(widget);
}

static void
e_table_field_chooser_destroy (GtkObject *object)
{
    ETableFieldChooser *etfc = E_TABLE_FIELD_CHOOSER(object);

    g_free(etfc->dnd_code);
    if (etfc->full_header)
        gtk_object_unref(GTK_OBJECT(etfc->full_header));
    if (etfc->header)
        gtk_object_unref(GTK_OBJECT(etfc->header));

    if (etfc->gui)
        gtk_object_unref(GTK_OBJECT(etfc->gui));

    if (GTK_OBJECT_CLASS (parent_class)->destroy)
        (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}

GtkWidget*
e_table_field_chooser_new (void)
{
    GtkWidget *widget = GTK_WIDGET (gtk_type_new (e_table_field_chooser_get_type ()));
    return widget;
}

static void
e_table_field_chooser_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
    ETableFieldChooser *etfc = E_TABLE_FIELD_CHOOSER(object);

    switch (arg_id){
    case ARG_DND_CODE:
        g_free(etfc->dnd_code);
        etfc->dnd_code = g_strdup(GTK_VALUE_STRING (*arg));
        if (etfc->item)
            gtk_object_set(GTK_OBJECT(etfc->item),
                       "dnd_code", etfc->dnd_code,
                       NULL);
        break;
    case ARG_FULL_HEADER:
        if (etfc->full_header)
            gtk_object_unref(GTK_OBJECT(etfc->full_header));
        if (GTK_VALUE_OBJECT(*arg))
            etfc->full_header = E_TABLE_HEADER(GTK_VALUE_OBJECT(*arg));
        else
            etfc->full_header = NULL;
        if (etfc->full_header)
            gtk_object_ref(GTK_OBJECT(etfc->full_header));
        if (etfc->item)
            gtk_object_set(GTK_OBJECT(etfc->item),
                       "full_header", etfc->full_header,
                       NULL);
        break;
    case ARG_HEADER:
        if (etfc->header)
            gtk_object_unref(GTK_OBJECT(etfc->header));
        if (GTK_VALUE_OBJECT(*arg))
            etfc->header = E_TABLE_HEADER(GTK_VALUE_OBJECT(*arg));
        else
            etfc->header = NULL;
        if (etfc->header)
            gtk_object_ref(GTK_OBJECT(etfc->header));
        if (etfc->item)
            gtk_object_set(GTK_OBJECT(etfc->item),
                       "header", etfc->header,
                       NULL);
        break;
    default:
        break;
    }
}

static void
e_table_field_chooser_get_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
    ETableFieldChooser *etfc = E_TABLE_FIELD_CHOOSER(object);

    switch (arg_id) {
    case ARG_DND_CODE:
        GTK_VALUE_STRING (*arg) = g_strdup (etfc->dnd_code);
        break;
    case ARG_FULL_HEADER:
        GTK_VALUE_OBJECT (*arg) = GTK_OBJECT(etfc->full_header);
        break;
    case ARG_HEADER:
        GTK_VALUE_OBJECT (*arg) = GTK_OBJECT(etfc->header);
        break;
    default:
        arg->type = GTK_TYPE_INVALID;
        break;
    }
}