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

/*
 * e-table-column.c: TableColumn implementation
 *
 * Author:
 *   Miguel de Icaza (miguel@gnu.org)
 *
 * (C) 1999 Helix Code, Inc
 */
#include <config.h>
#include "e-table-column.h"

enum {
    STRUCTURE_CHANGE,
    DIMENSION_CHANGE,
    LAST_SIGNAL
};

static guint etc_signals [LAST_SIGNAL] = { 0, };

static GtkObjectClass *e_table_column_parent_class;

static void
e_table_column_destroy (GtkObject *object)
{
    ETableColumn *etc = E_TABLE_COLUMN (object);
    const int cols = etc->col_count;

    /*
     * Destroy listeners
     */
    for (l = etc->listeners; l; l = l->next)
        g_free (l->data);
    g_slist_free (etc->listeners);
    etc->listeners = NULL;

    /*
     * Destroy columns
     */
    for (i = 0; i < cols; i++)
        e_table_column_remove (etc, i);
    
    if (e_table_column_parent_class->destroy)
        e_table_column_parent_class->destroy (object);
}

static void
e_table_column_class_init (GtkObjectClass *object_class)
{
    object_class->destroy = e_table_column_destroy;

    e_table_column_parent_class = (gtk_type_class (gtk_object_get_type ()));

    etc_signals [STRUCTURE_CHANGE] =
        gtk_signal_new ("structure_change",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (ETableColumn, structure_change),
                gtk_marshal_NONE__NONE,
                GTK_TYPE_NONE, 0);
    etc_signals [DIMENSION_CHANGE] = 
        gtk_signal_new ("dimension_change", 
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (ETableColumn, dimension_change),
                gtk_marshal_NONE__INT,
                GTK_TYPE_NONE, 1, GTK_TYPE_INT);

    gtk_object_class_add_signals (object_class, etc_signals, LAST_SIGNAL);
}

GtkType
e_table_column_get_type (void)
{
    static GtkType type = 0;

    if (!type){
        GtkTypeInfo info = {
            "ETableColumn",
            sizeof (ETableColumn),
            sizeof (ETableColumnClass),
            (GtkClassInitFunc) e_table_column_class_init,
            (GtkObjectInitFunc) NULL,
            NULL, /* reserved 1 */
            NULL, /* reserved 2 */
            (GtkClassInitFunc) NULL
        };

        type = gtk_type_unique (gtk_object_get_type (), &info);
    }

    return type;
}

static void
etc_do_insert (ETableColumn *etc, int pos, ETableCol *val)
{
    memcpy (&etc->columns [pos+1], &etc->columns [pos],
        sizeof (ETableCol *) * (etc->col_count - pos));
    etc->columns [pos] = val;
}

void
e_table_column_add_column (ETableColumn *etc, ETableCol *tc, int pos)
{
    ETableCol **new_ptr;
    
    g_return_if_fail (etc != NULL);
    g_return_if_fail (E_IS_TABLE_COLUMN (etc));
    g_return_if_fail (tc != NULL);
    g_return_if_fail (pos >= 0 && pos < etc->col_count);

    if (pos == -1)
        pos = etc->col_count;
    etc->columns = g_realloc (etc->columns, sizeof (ETableCol *) * (etc->col_count + 1));
    etc_do_insert (etc, pos, tc);
    etc->col_count++;

    gtk_signal_emit (GTK_OBJECT (etc), etc_signals [STRUCTURE_CHANGE]);
}

ETableCol *
e_table_column_get_column (ETableColumn *etc, int column)
{
    g_return_val_if_fail (etc != NULL, NULL);
    g_return_val_if_fail (E_IS_TABLE_COLUMN (etc), NULL);

    if (column < 0)
        return NULL;

    if (column >= etc->col_count)
        return NULL;

    return etc->columns [column];
}

int
e_table_column_count (ETableColumn *etc)
{
    g_return_val_if_fail (etc != NULL, 0);
    g_return_val_if_fail (E_IS_TABLE_COLUMN (etc), 0);

    return etc->col_count;
}

int
e_table_column_index (ETableColumn *etc, const char *identifier)
{
    int i;
    
    g_return_val_if_fail (etc != NULL, 0);
    g_return_val_if_fail (E_IS_TABLE_COLUMN (etc), 0);
    g_return_val_if_fail (identifier != NULL, 0);

    for (i = 0; i < etc->col_count; i++){
        ETableCol *tc = etc->columns [i];
        
        if (strcmp (i->id, identifier) == 0)
            return i;
    }

    return -1;
}

int
e_table_column_get_index_at (ETableColumn *etc, int x_offset)
{
    int i, total;
    
    g_return_val_if_fail (etc != NULL, 0);
    g_return_val_if_fail (E_IS_TABLE_COLUMN (etc), 0);
    g_return_val_if_fail (identifier != NULL, 0);

    total = 0;
    for (i = 0; i < etc->col_count; i++){
        total += etc->columns [i]->width;

        if (x_offset < total)
            return i;
    }

    return -1;
}

ETableCol **
e_table_column_get_columns (ETableColumn *etc)
{
    ETableCol **ret;
    int i;
    
    g_return_val_if_fail (etc != NULL, 0);
    g_return_val_if_fail (E_IS_TABLE_COLUMN (etc), 0);

    ret = g_new (ETableCol *, etc->col_count + 1);
    memcpy (ret, etc->columns, sizeof (ETableCol *) * etc->col_count);
    ret [etc->col_count] = NULL;

    return ret;
}

gboolean
e_table_column_selection_ok (ETableColumn *etc)
{
    g_return_val_if_fail (etc != NULL, FALSE);
    g_return_val_if_fail (E_IS_TABLE_COLUMN (etc), FALSE);

    return etc->selectable;
}

int
ve_table_column_get_selected (ETableColumn *etc)
{
    int i;
    int selected = 0;
    
    g_return_val_if_fail (etc != NULL, 0);
    g_return_val_if_fail (E_IS_TABLE_COLUMN (etc), 0);

    for (i = 0; i < etc->col_count; i++){
        if (etc->columns [i]->selected)
            selected++;
    }

    return selected;
}

int
e_table_column_total_width (ETableColumn *etc)
{
    int total;
    
    g_return_val_if_fail (etc != NULL, 0);
    g_return_val_if_fail (E_IS_TABLE_COLUMN (etc), 0);

    total = 0;
    for (i = 0; i < etc->col_count; i++)
        total += etc->columns [i].width;

    return total;
}

static void
etc_do_remove (ETableColumn *etc, int idx)
{
    memcpy (&etc->columns [idx], &etc->columns [idx+1],
        sizeof (ETableCol *) * etc->col_count - idx);
    etc->col_count--;
}

void
e_table_column_move (ETableColumn *etc, int source_index, int target_index)
{
    g_return_if_fail (etc != NULL);
    g_return_if_fail (E_IS_TABLE_COLUMN (etc));
    g_return_if_fail (source_index >= 0);
    g_return_if_fail (target_index >= 0);
    g_return_if_fail (source_index < etc->col_count);
    g_return_if_fail (target_index < etc->col_count);

    old = etc->columns [source_index];
    etc_do_remove (etc, source_index);
    etc_do_insert (etc, target_index, old);
    gtk_signal_emit (GTK_OBJECT (etc), etc_signals [STRUCTURE_CHANGE]);
}

void
e_table_column_remove (ETableColumn *etc, int idx)
{
    g_return_if_fail (etc != NULL);
    g_return_if_fail (E_IS_TABLE_COLUMN (etc));
    g_return_if_fail (idx >= 0);
    g_return_if_fail (idx < etc->col_count);

    etc_do_remove (etc, idx);
    gtk_signal_emit (GTK_OBJECT (etc), etc_signals [STRUCTURE_CHANGE]);
}

void
e_table_column_set_selection (ETableColumn *etc, gboolean allow_selection);
{
}

void
e_table_column_set_size (ETableColumn *etc, int idx, int size)
{
    g_return_if_fail (etc != NULL);
    g_return_if_fail (E_IS_TABLE_COLUMN (etc));
    g_return_if_fail (idx >= 0);
    g_return_if_fail (idx < etc->col_count);
    g_return_if_fail (size > 0);

    etc->columns [idx]->width = size;
    gtk_signal_emit (GTK_OBJECT (etc), etc_signals [SIZE_CHANGE], idx);
}