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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Authors:
* Christopher James Lahey <clahey@umich.edu>
*
* Copyright (C) 2000 Ximian, Inc.
* Copyright (C) 1999 The Free Software Foundation
*/
#include <config.h>
#include "e-list.h"
#include "e-list-iterator.h"
#define ECL_CLASS(object) (E_LIST_CLASS(GTK_OBJECT((object))->klass))
static void e_list_init (EList *list);
static void e_list_class_init (EListClass *klass);
static void e_list_destroy (GtkObject *object);
#define PARENT_TYPE (gtk_object_get_type ())
static GtkObjectClass *parent_class;
/**
* e_list_get_type:
* @void:
*
* Registers the &EList class if necessary, and returns the type ID
* associated to it.
*
* Return value: The type ID of the &EList class.
**/
GtkType
e_list_get_type (void)
{
static GtkType type = 0;
if (!type) {
GtkTypeInfo info = {
"EList",
sizeof (EList),
sizeof (EListClass),
(GtkClassInitFunc) e_list_class_init,
(GtkObjectInitFunc) e_list_init,
NULL, /* reserved_1 */
NULL, /* reserved_2 */
(GtkClassInitFunc) NULL
};
type = gtk_type_unique (PARENT_TYPE, &info);
}
return type;
}
static void
e_list_class_init (EListClass *klass)
{
GtkObjectClass *object_class;
object_class = GTK_OBJECT_CLASS(klass);
parent_class = gtk_type_class (PARENT_TYPE);
object_class->destroy = e_list_destroy;
}
/**
* e_list_init:
*/
static void
e_list_init (EList *list)
{
list->list = NULL;
list->iterators = NULL;
}
EList *
e_list_new (EListCopyFunc copy, EListFreeFunc free, void *closure)
{
EList *list = gtk_type_new(e_list_get_type());
list->copy = copy;
list->free = free;
list->closure = closure;
return list;
}
EList *
e_list_duplicate (EList *old)
{
EList *list = gtk_type_new(e_list_get_type());
list->copy = old->copy;
list->free = old->free;
list->closure = old->closure;
list->list = g_list_copy(old->list);
if (list->copy) {
GList *listlist;
for (listlist = list->list; listlist; listlist = listlist->next) {
listlist->data = list->copy (listlist->data, list->closure);
}
}
return list;
}
EIterator *
e_list_get_iterator (EList *list)
{
EIterator *iterator = e_list_iterator_new(list);
list->iterators = g_list_append(list->iterators, iterator);
return iterator;
}
int
e_list_length (EList *list)
{
return g_list_length(list->list);
}
void
e_list_append (EList *list, const void *data)
{
e_list_invalidate_iterators(list, NULL);
if (list->copy)
list->list = g_list_append(list->list, list->copy(data, list->closure));
else
list->list = g_list_append(list->list, (void *) data);
}
void
e_list_invalidate_iterators (EList *list, EIterator *skip)
{
GList *iterators = list->iterators;
for (; iterators; iterators = iterators->next) {
if (iterators->data != skip) {
e_iterator_invalidate(E_ITERATOR(iterators->data));
}
}
}
/* FIXME: This doesn't work properly if the iterator is the first
iterator in the list. Well, the iterator doesn't continue on after
the next time next is called, at least. */
void
e_list_remove_link (EList *list, GList *link)
{
GList *iterators = list->iterators;
for (; iterators; iterators = iterators->next) {
if (((EListIterator *)iterators->data)->iterator == link) {
e_iterator_prev(iterators->data);
}
}
if (list->free)
list->free(link->data, list->closure);
list->list = g_list_remove_link(list->list, link);
g_list_free_1(link);
}
void
e_list_remove_iterator (EList *list, EIterator *iterator)
{
list->iterators = g_list_remove(list->iterators, iterator);
}
/*
* Virtual functions
*/
static void
e_list_destroy (GtkObject *object)
{
EList *list = E_LIST(object);
if (list->free)
g_list_foreach(list->list, (GFunc) list->free, list->closure);
g_list_free(list->list);
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
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