New list class with iterators.

2000-07-03  Christopher James Lahey  <clahey@helixcode.com>

	* e-iterator.c, e-iterator.h, e-list-iterator.c,
	e-list-iterator.h, e-list.c, e-list.h: New list class with
	iterators.

	* e-canvas.c: Made it so that you don't get the same selection in
	the selection list more than once.

svn path=/trunk/; revision=3871

1 files changed, 60 insertions, 0 deletions

diff --git a/e-util/e-list.h b/e-util/e-list.h
new file mode 100644
index 0000000000..545798fbf9
--- /dev/null
+++ b/e-util/e-list.h
@@ -0,0 +1,60 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Authors:
+ *   Chris Lahey <clahey@helixcode.com>
+ *
+ * Copyright (C) 2000 Helix Code, Inc.
+ * Copyright (C) 1999 The Free Software Foundation
+ */
+
+#ifndef __E_LIST_H__
+#define __E_LIST_H__
+
+typedef struct _EList EList;
+typedef struct _EListClass EListClass;
+
+#include <time.h>
+#include <gtk/gtk.h>
+#include <stdio.h>
+#include <e-util/e-list-iterator.h>
+
+#define E_TYPE_LIST            (e_list_get_type ())
+#define E_LIST(obj)            (GTK_CHECK_CAST ((obj), E_TYPE_LIST, EList))
+#define E_LIST_CLASS(klass)    (GTK_CHECK_CLASS_CAST ((klass), E_TYPE_LIST, EListClass))
+#define E_IS_LIST(obj)         (GTK_CHECK_TYPE ((obj), E_TYPE_LIST))
+#define E_IS_LIST_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), E_TYPE_LIST))
+
+typedef void *(*EListCopyFunc) (const void *data, void *closure);
+typedef void (*EListFreeFunc) (void *data, void *closure);
+
+struct _EList {
+	GtkObject      object;
+	GList         *list;
+	GList         *iterators;
+	EListCopyFunc  copy;
+	EListFreeFunc  free;
+	void          *closure;
+};
+
+struct _EListClass {
+	GtkObjectClass parent_class;
+};
+
+EList     *e_list_new                  (EListCopyFunc  copy, 
+					EListFreeFunc  free,
+					void          *closure);
+EIterator *e_list_get_iterator         (EList         *list);
+void       e_list_append               (EList         *list,
+					const void    *data);
+int        e_list_length               (EList         *list);
+
+/* For iterators to call. */
+void       e_list_invalidate_iterators (EList         *list, 
+					EIterator     *skip);
+void       e_list_remove_iterator      (EList         *list,
+					EIterator     *iterator);
+
+/* Standard Gtk function */
+GtkType    e_list_get_type             (void);
+
+#endif /* ! __E_LIST_H__ */