path: root/widgets/table/e-table-group.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * E-Table-Group.c: Implements the grouping objects for elements on a table
 *
 * Author:
 *   Miguel de Icaza (miguel@helixcode.com)
 *   Chris Lahey (clahey@helixcode.com)
 *
 * Copyright 1999, 2000 Helix Code, Inc.
 */

#include <config.h>
#include <gtk/gtksignal.h>
#include "e-table-group.h"
#include "e-table-group-container.h"
#include "e-table-group-leaf.h"
#include "e-table-item.h"
#include <libgnomeui/gnome-canvas-rect-ellipse.h>
#include "e-util/e-util.h"

#define TITLE_HEIGHT         16
#define GROUP_INDENT         10

#define PARENT_TYPE gnome_canvas_group_get_type ()

#define ETG_CLASS(e) (E_TABLE_GROUP_CLASS(GTK_OBJECT(e)->klass))

static GnomeCanvasGroupClass *etg_parent_class;

enum {
    ROW_SELECTION,
    LAST_SIGNAL
};

static gint etg_signals [LAST_SIGNAL] = { 0, };

/* The arguments we take */
enum {
    ARG_0,
    ARG_HEIGHT,
    ARG_WIDTH,
    ARG_FROZEN
};

static void etg_set_arg (GtkObject *object, GtkArg *arg, guint arg_id);
static void etg_get_arg (GtkObject *object, GtkArg *arg, guint arg_id);
static gboolean etg_get_focus (ETableGroup      *etg);
static void etg_destroy (GtkObject *object);
#if 0
GnomeCanvasItem *
e_table_group_new (GnomeCanvasGroup *parent, ETableCol *ecol, 
           gboolean open, gboolean transparent)
{
    ETableGroup *etg;

    g_return_val_if_fail (parent != NULL, NULL);
    g_return_val_if_fail (ecol != NULL, NULL);
    
    etg = gtk_type_new (e_table_group_get_type ());

    e_table_group_construct (parent, etg, ecol, open, transparent);

    return GNOME_CANVAS_ITEM (etg);
}
#endif

static void
etg_destroy (GtkObject *object)
{
    ETableGroup *etg = E_TABLE_GROUP(object);
    if (etg->header)
        gtk_object_unref (GTK_OBJECT(etg->header));
    if (etg->full_header)
        gtk_object_unref (GTK_OBJECT(etg->full_header));
    if (etg->model)
        gtk_object_unref (GTK_OBJECT(etg->model));
    if (GTK_OBJECT_CLASS (etg_parent_class)->destroy)
        GTK_OBJECT_CLASS (etg_parent_class)->destroy (object);
}

ETableGroup *
e_table_group_new (GnomeCanvasGroup *parent,
           ETableHeader     *full_header,
           ETableHeader     *header,
           ETableModel      *model,
           ETableSortInfo   *sort_info,
           int               n)
{
    g_return_val_if_fail (model != NULL, NULL);
    
    if (n < e_table_sort_info_grouping_get_count(sort_info)) {
        return e_table_group_container_new (parent, full_header, header, model, sort_info, n);
    } else {
        return e_table_group_leaf_new (parent, full_header, header, model, sort_info);
    }
    return NULL;
}

void
e_table_group_construct (GnomeCanvasGroup *parent,
             ETableGroup      *etg,
             ETableHeader     *full_header,
             ETableHeader     *header,
             ETableModel      *model)
{
    etg->full_header = full_header;
    gtk_object_ref (GTK_OBJECT(etg->full_header));
    etg->header = header;
    gtk_object_ref (GTK_OBJECT(etg->header));
    etg->model = model;
    gtk_object_ref (GTK_OBJECT(etg->model));
    gnome_canvas_item_constructv (GNOME_CANVAS_ITEM (etg), parent, 0, NULL);
}

void
e_table_group_add (ETableGroup *etg,
           gint row)
{
    g_return_if_fail (etg != NULL);
    g_return_if_fail (E_IS_TABLE_GROUP (etg));

    if (ETG_CLASS (etg)->add)
        ETG_CLASS (etg)->add (etg, row);
}

gboolean
e_table_group_remove (ETableGroup *etg,
              gint row)
{
    g_return_val_if_fail (etg != NULL, FALSE);
    g_return_val_if_fail (E_IS_TABLE_GROUP (etg), FALSE);

    if (ETG_CLASS (etg)->remove)
        return ETG_CLASS (etg)->remove (etg, row);
    else
        return FALSE;
}

gint
e_table_group_get_count (ETableGroup *etg)
{
    g_return_val_if_fail (etg != NULL, 0);
    g_return_val_if_fail (E_IS_TABLE_GROUP (etg), 0);

    if (ETG_CLASS (etg)->get_count)
        return ETG_CLASS (etg)->get_count (etg);
    else
        return 0;
}

void
e_table_group_increment (ETableGroup *etg,
             gint position,
             gint amount)
{
    g_return_if_fail (etg != NULL);
    g_return_if_fail (E_IS_TABLE_GROUP (etg));

    if (ETG_CLASS (etg)->increment)
        ETG_CLASS (etg)->increment (etg, position, amount);
}

void
e_table_group_set_focus (ETableGroup *etg,
             EFocus direction,
             gint row)
{
    g_return_if_fail (etg != NULL);
    g_return_if_fail (E_IS_TABLE_GROUP (etg));

    if (ETG_CLASS (etg)->set_focus)
        ETG_CLASS (etg)->set_focus (etg, direction, row);
}

gboolean
e_table_group_get_focus (ETableGroup *etg)
{
    g_return_val_if_fail (etg != NULL, FALSE);
    g_return_val_if_fail (E_IS_TABLE_GROUP (etg), FALSE);

    if (ETG_CLASS (etg)->get_focus)
        return ETG_CLASS (etg)->get_focus (etg);
    else
        return FALSE;
}

gboolean
e_table_group_get_focus_column (ETableGroup *etg)
{
    g_return_val_if_fail (etg != NULL, FALSE);
    g_return_val_if_fail (E_IS_TABLE_GROUP (etg), FALSE);

    if (ETG_CLASS (etg)->get_focus_column)
        return ETG_CLASS (etg)->get_focus_column (etg);
    else
        return FALSE;
}

ETableCol *
e_table_group_get_ecol (ETableGroup *etg)
{
    g_return_val_if_fail (etg != NULL, NULL);
    g_return_val_if_fail (E_IS_TABLE_GROUP (etg), NULL);

    if (ETG_CLASS (etg)->get_ecol)
        return ETG_CLASS (etg)->get_ecol (etg);
    else
        return NULL;
}

void
e_table_group_row_selection (ETableGroup *e_table_group, gint row, gboolean selected)
{
    g_return_if_fail (e_table_group != NULL);
    g_return_if_fail (E_IS_TABLE_GROUP (e_table_group));

    gtk_signal_emit (GTK_OBJECT (e_table_group),
             etg_signals [ROW_SELECTION],
             row, selected);
}

ETableHeader *
e_table_group_get_header (ETableGroup *etg)
{
    g_return_val_if_fail (etg != NULL, NULL);
    g_return_val_if_fail (E_IS_TABLE_GROUP (etg), NULL);

    return etg->header;
}

static int
etg_event (GnomeCanvasItem *item, GdkEvent *event)
{
    ETableGroup *etg = E_TABLE_GROUP (item);
    gboolean return_val = TRUE;

    switch (event->type) {

    case GDK_FOCUS_CHANGE:
        etg->has_focus = event->focus_change.in;
        return_val = FALSE;

    default:
        return_val = FALSE;
    }
    if (return_val == FALSE){
        if (GNOME_CANVAS_ITEM_CLASS(etg_parent_class)->event)
            return GNOME_CANVAS_ITEM_CLASS(etg_parent_class)->event (item, event);
    }
    return return_val;

}

static void
etg_thaw (ETableGroup *etg)
{
    g_return_if_fail (etg != NULL);
    g_return_if_fail (E_IS_TABLE_GROUP (etg));

    if (ETG_CLASS (etg)->thaw)
        ETG_CLASS (etg)->thaw (etg);
}

static void
etg_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
    ETableGroup *etg = E_TABLE_GROUP (object);

    switch (arg_id) {
    case ARG_FROZEN:
        if (GTK_VALUE_BOOL (*arg))
            etg->frozen = TRUE;
        else {
            etg->frozen = FALSE;
            etg_thaw (etg);
        }
        break;
    case ARG_WIDTH:
        if (ETG_CLASS(etg)->set_width)
            ETG_CLASS(etg)->set_width (etg, GTK_VALUE_DOUBLE (*arg));
        break;
    default:
        break;
    }
}

static void
etg_get_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
    ETableGroup *etg = E_TABLE_GROUP (object);

    switch (arg_id) {
    case ARG_FROZEN:
        GTK_VALUE_BOOL (*arg) = etg->frozen;
        break;
    case ARG_HEIGHT:
        if (ETG_CLASS(etg)->get_height)
            GTK_VALUE_DOUBLE (*arg) = ETG_CLASS(etg)->get_height (etg);
        else
            arg->type = GTK_TYPE_INVALID;
        break;
    case ARG_WIDTH:
        if (ETG_CLASS(etg)->get_width)
            GTK_VALUE_DOUBLE (*arg) = ETG_CLASS(etg)->get_width (etg);
        else
            arg->type = GTK_TYPE_INVALID;
        break;
    default:
        arg->type = GTK_TYPE_INVALID;
        break;
    }
}

static gboolean
etg_get_focus (ETableGroup      *etg)
{
    return etg->has_focus;
}

static void
etg_class_init (GtkObjectClass *object_class)
{
    GnomeCanvasItemClass *item_class = (GnomeCanvasItemClass *) object_class;
    ETableGroupClass *klass = (ETableGroupClass *) object_class;
    
    object_class->set_arg = etg_set_arg;
    object_class->get_arg = etg_get_arg;
    object_class->destroy = etg_destroy;

    item_class->event = etg_event;

    klass->row_selection = NULL;
    
    klass->add = NULL;
    klass->remove = NULL;
    klass->get_count = NULL;
    klass->increment = NULL;
    klass->set_focus = NULL;
    klass->get_focus = etg_get_focus;
    klass->get_ecol = NULL;

    klass->thaw = NULL;
    klass->get_height = NULL;
    klass->get_width = NULL;
    klass->set_width = NULL;
    
    etg_parent_class = gtk_type_class (PARENT_TYPE);

    etg_signals [ROW_SELECTION] =
        gtk_signal_new ("row_selection",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (ETableGroupClass, row_selection),
                gtk_marshal_NONE__INT_INT,
                GTK_TYPE_NONE, 2, GTK_TYPE_INT, GTK_TYPE_INT);

    gtk_object_class_add_signals (object_class, etg_signals, LAST_SIGNAL);
}

E_MAKE_TYPE (e_table_group, "ETableGroup", ETableGroup, etg_class_init, NULL, PARENT_TYPE);