1 files changed, 109 insertions, 0 deletions
diff --git a/libnautilus-extensions/nautilus-file-dnd.c b/libnautilus-extensions/nautilus-file-dnd.c
new file mode 100644
index 000000000..fe559b2d1
--- /dev/null
+++ b/libnautilus-extensions/nautilus-file-dnd.c
@@ -0,0 +1,109 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+
+/* nautilus-file-drag.c - Drag & drop handling code that operated on 
+   NautilusFile objects.
+
+   Copyright (C) 2000 Eazel, Inc.
+
+   The Gnome Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The Gnome 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 the Gnome Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+
+   Authors: Pavel Cisler <pavel@eazel.com>,
+*/
+
+#include <config.h>
+#include "nautilus-file-dnd.h"
+
+#include <eel/eel-glib-extensions.h>
+#include <eel/eel-string.h>
+
+gboolean
+nautilus_drag_can_accept_item (NautilusFile *drop_target_item,
+			       const char *item_uri)
+{
+	if (nautilus_file_matches_uri (drop_target_item, item_uri)) {
+		/* can't accept itself */
+		return FALSE;
+	}
+	
+	if (nautilus_file_is_directory (drop_target_item)) {
+		/* target is a directory, accept anything */
+		return TRUE;
+	}
+
+	/* All Nautilus links are assumed to be links to directories.
+	 * Therefore, they all can accept drags, like all other
+	 * directories to. As with other directories, there can be
+	 * errors when the actual copy is attempted due to
+	 * permissions.
+	 */
+	if (nautilus_file_is_nautilus_link (drop_target_item)) {
+		return TRUE;
+	}
+	
+	return FALSE;
+}
+					       
+gboolean
+nautilus_drag_can_accept_items (NautilusFile *drop_target_item,
+				const GList *items)
+{
+	int max;
+
+	if (drop_target_item == NULL)
+		return FALSE;
+
+	g_assert (NAUTILUS_IS_FILE (drop_target_item));
+
+	/* Iterate through selection checking if item will get accepted by the
+	 * drop target. If more than 100 items selected, return an over-optimisic
+	 * result
+	 */
+	for (max = 100; items != NULL && max >= 0; items = items->next, max--) {
+		if (!nautilus_drag_can_accept_item (drop_target_item, 
+			((DragSelectionItem *)items->data)->uri)) {
+			return FALSE;
+		}
+	}
+	
+	return TRUE;
+}
+
+void
+nautilus_drag_file_receive_dropped_keyword (NautilusFile *file, char *keyword)
+{
+	GList *keywords, *word;
+
+	g_return_if_fail (NAUTILUS_IS_FILE (file));
+	g_return_if_fail (keyword != NULL);
+
+	/* special case the erase emblem */
+	if (strcmp (keyword, ERASE_KEYWORD) == 0) {
+		keywords = NULL;
+	} else {
+		keywords = nautilus_file_get_keywords (file);
+		word = g_list_find_custom (keywords, keyword, (GCompareFunc) strcmp);
+		if (word == NULL) {
+			keywords = g_list_append (keywords, g_strdup (keyword));
+		} else {
+			keywords = g_list_remove_link (keywords, word);
+			g_free (word->data);
+			g_list_free_1 (word);
+		}
+	}
+	
+	nautilus_file_set_keywords (file, keywords);
+	eel_g_list_free_deep (keywords);
+}